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1

ENGINEERING ASSESSMENT OF VERMICOMPOSTING MUNICIPAL WASTEWATER SLUDGES  

EPA Science Inventory

Vermicomposting -- the biological degradation of organic matter that occurs as earthworms feed on waste materials -- has been advocated by some as a means of stabilizing and disposing of municipal wastewater sludges. Vermicomposting is being attempted on an experimental scale, th...

2

Industrial wastes and sludges management by vermicomposting  

Microsoft Academic Search

Vermicomposting has been arising as an innovative ecotechnology for the conversion of various types of wastes into vermicompost.\\u000a Vermicompost is humus like, finely granulated and stabilized material which can be used as a soil conditioner to reintegrate\\u000a the organic matter to the agricultural soils. Industrial wastes remain largely unutilized and often cause environmental problems\\u000a like ground and surface water pollution,

Anoop Yadav; V. K. Garg

3

COMPENDIUM ON SOLID WASTE MANAGEMENT BY VERMICOMPOSTING  

EPA Science Inventory

Vermicomposting of municipal solid wastes has been attempted only in the last five years and there are presently no full-scale operations. This report assesses the technical and economic feasibility of vermicomposting and is based on several pilot-scale studies conducted by priva...

4

Vermicompost for Tinted Organic Cationic Dyes Retention  

Microsoft Academic Search

The use of vermicompost was expanded as natural adsorbent for cationic dyes retention. The adsorption profiles in batch and\\u000a flow modes for crystal violet and methylene blue on vermicompost material were evaluated. In batch mode, a retention index\\u000a higher than 97% was obtained for both compounds, while in flow condition, 40 g of dried adsorbent material were enough to\\u000a remove 100 mg

Madson de Godoi Pereira; Mauro Korn; Bruno Barros Santos; Marcia Guia Ramos

2009-01-01

5

Stabilization of primary sewage sludge during vermicomposting.  

PubMed

In India, over the last few decades, there has been a remarkable increase in sewage sludge production due to population increase and unplanned urbanization. The aim of the present study was to investigate the ability of an epigeic earthworm Eisenia foetida to transform primary sewage sludge (PSS) amended with cow dung (CD) into value added product, i.e., vermicompost in laboratory scale experiments. Two approaches investigated in the study were: (1) evaluation of vermistabilization of PSS and CD mixtures after 15 weeks in terms of fertilizer quality of the products and; (2) growth and reproduction of Eisenia foetida up to 11 weeks in different vermireactors. In all the PSS and CD mixtures, a decrease in pH, TOC and C:N ratio, but increase in EC, TKN, TK and TP was recorded. The heavy metals' content in the vermicomposts was higher than initial mixtures. Maximum worm biomass was attained in 10% PSS+90% CD mixture while, the worm growth rate was highest in 30% PSS+70% CD feed mixture. It was inferred from the study that addition of 30-40% of PSS with CD had no adverse effect on the fertilizer value of the vermicompost as well as growth of Eisenia foetida. The results indicated that PSS could be converted into good quality manure by vermicomposting if mixed in appropriate ratio (30-40%) with cow dung. PMID:17950995

Gupta, Renuka; Garg, V K

2008-05-30

6

Vermicomposting of AgroIndustrial Processing Waste  

Microsoft Academic Search

Agro-industrial wastes- wastes from agriculture, food processing or any cellulose based industries- remain largely unutilized\\u000a and often cause environmental problems like dispersing foul odors, occupying vast areas, ground and surface water pollution\\u000a etc. These wastes could be converted into potential renewable source of energy, if managed sustainably and scientifically.\\u000a In the last few decades, vermicomposting technology has been arising as

V. K. Garg; Renuka Gupta

7

Spectroscopic analysis of vermicompost for determination of nutritional quality.  

PubMed

Spectroscopic analysis has been carried out to examine the compost quality, maturity and nutritional levels of vermicompost and compost of Eichhornia. 50% Eichhorniacrassipes and 50% cow dung mixtures were vermicomposted using earthworms (Eudrilus eugeniae) and collected on different days' time intervals. Fourier transform infrared spectroscopy (FT-IR) spectra reveal the presence of humic substance from compost and vermicompost, which improves the soil fertility. Gas chromatography-mass spectroscopy (GC-MS) analysis shows maximum level of Benzene propanoic acid (95.98%) and by 2-Propanone, 1-Phenyl-, OXIM (10.10%) from vermicompost through earthworms activity. Atomic absorption spectroscopy (AAS) results reported high level of micronutrient from Eichhornia mediated compost and vermicompost. PMID:25068838

Subhash Kumar, M; Rajiv, P; Rajeshwari, Sivaraj; Venckatesh, Rajendran

2015-01-25

8

Spectroscopic analysis of vermicompost for determination of nutritional quality  

NASA Astrophysics Data System (ADS)

Spectroscopic analysis has been carried out to examine the compost quality, maturity and nutritional levels of vermicompost and compost of Eichhornia. 50% Eichhorniacrassipes and 50% cow dung mixtures were vermicomposted using earthworms (Eudrilus eugeniae) and collected on different days' time intervals. Fourier transform infrared spectroscopy (FT-IR) spectra reveal the presence of humic substance from compost and vermicompost, which improves the soil fertility. Gas chromatography-mass spectroscopy (GC-MS) analysis shows maximum level of Benzene propanoic acid (95.98%) and by 2-Propanone, 1-Phenyl-, OXIM (10.10%) from vermicompost through earthworms activity. Atomic absorption spectroscopy (AAS) results reported high level of micronutrient from Eichhornia mediated compost and vermicompost.

Subhash Kumar, M.; Rajiv, P.; Rajeshwari, Sivaraj; Venckatesh, Rajendran

2015-01-01

9

Vermicomposting of food waste: assessing the stability and maturity  

PubMed Central

The vermicompost using earthworms (Eisenia Fetida) was produced from food waste and chemical parameters (EC, pH, carbon to nitrogen contents (C/N)) and germination bioassay was examined in order to assess the stability and maturity indicators during the vermicomposting process. The seed used in the germination bioassay was cress. The ranges of EC, pH, C/N and germination index were 7.5-4.9 mS/cm, 5.6-7.53, 30.13-14.32% and 12.8-58.4%, respectively. The germination index (GI) value revealed that vermicompost rendered as moderate phytotoxic to cress seed. Pearson correlation coefficient was used to evaluate the relationship between the parameters. High statistically significant correlation coefficient was calculated between the GI value and EC in the vermicompost at the 99% confidence level. The C/N value showed that the vermicompost was stable. As a result of these observations, stability test alone, was not able to ensure high vermicompost quality. Therefore, it appears that determining vermicompost quality requires a simultaneous use of maturity and stability tests. PMID:23369642

2012-01-01

10

Vermicomposting of food waste: assessing the stability and maturity.  

PubMed

The vermicompost using earthworms (Eisenia Fetida) was produced from food waste and chemical parameters (EC, pH, carbon to nitrogen contents (C/N)) and germination bioassay was examined in order to assess the stability and maturity indicators during the vermicomposting process. The seed used in the germination bioassay was cress. The ranges of EC, pH, C/N and germination index were 7.5-4.9 mS/cm, 5.6-7.53, 30.13-14.32% and 12.8-58.4%, respectively. The germination index (GI) value revealed that vermicompost rendered as moderate phytotoxic to cress seed. Pearson correlation coefficient was used to evaluate the relationship between the parameters. High statistically significant correlation coefficient was calculated between the GI value and EC in the vermicompost at the 99% confidence level. The C/N value showed that the vermicompost was stable. As a result of these observations, stability test alone, was not able to ensure high vermicompost quality. Therefore, it appears that determining vermicompost quality requires a simultaneous use of maturity and stability tests. PMID:23369642

Majlessi, Monireh; Eslami, Akbar; Najafi Saleh, Hossein; Mirshafieean, Simin; Babaii, Sara

2012-01-01

11

Nutrient recovery from apple pomace waste by vermicomposting technology.  

PubMed

The present work was focused on vermicomposting apple pomace waste and its mixtures with straw in volume proportions of 25%, 50%, and 75%. The feasibility was evaluated on the basis of agrochemical properties and earthworm biomass. Vermicomposting was able to reduce the weight and volume of the feedstock by 65% and 85%, respectively. The resulting vermicomposts were characterized by slightly acidic to neutral pH (5.9-6.9), and optimal EC (1.6-4.4mS/cm) and C:N ratios (13-14). The total content of nutrients increased during vermicomposting for all of the treatments with the following average final values: N=2.8%, P=0.85%, K=2.3%, and Mg=0.38%. The addition of straw to apple pomace did not enhance earthworm biomass, but did increase the available content of nutrients during vermicomposting. The data reveals that vermicomposting is a suitable technology for the decomposition of apple pomace waste into a value added product. PMID:24582426

Hanc, Ales; Chadimova, Zuzana

2014-09-01

12

Vermicomposting of distillation waste of citronella plant ( Cymbopogon winterianus Jowitt.) employing Eudrilus eugeniae  

Microsoft Academic Search

Laboratory experiment on vermicomposting of distillation waste of java citronella (Cymbopogon winterianus Jowitt.) was carried out employing Eudrilus eugeniae, in two seasonal trials, covering summer and winter periods. Two vermicomposting treatments were conducted in earthen pots, one with citronella plant waste only (CW) and the other, a mixture of citronella waste and cowdung in the proportion 5:1 (CW+CD). Vermicomposting of

H. Deka; S. Deka; C. K. Baruah; J. Das; S. Hoque; N. S. Sarma

2011-01-01

13

Feasibility of nutrient recovery from industrial sludge by vermicomposting technology.  

PubMed

Transformation of industrial sludges into vermicompost is of double interest: on the one hand, a waste is converted into value added product, and, on the other, it controls a pollutant that is a consequence of increasing industrialization. This paper reports the feasibility of utilization of vermicomposting technology for nutrient recovery from industrial sludge in laboratory scale experiment employing Eisenia fetida earthworm. A total of nine vermireactors, having different percentage of wastewater treatment plant sludge of a food industry and cow dung, were established and monitored for fertilizer quality of vermicompost and growth and fecundity of the earthworms for 3 months. The earthworms were unable to survive in 100% FIS. There was a decrease in pH, organic carbon content, organic matter, C:N ratio, and increase in ash content, EC, nitrogen, potassium and phosphorus content in all the vermireactors. Total Kjeldhal nitrogen (TKN) content increased in the range of 12.2-28.7 g kg(-1) in different vermireactors after vermicomposting. C:N ratio was 1.59-5.24 folds lesser in final vermicomposts than initial raw substrate. The heavy metals' content in final vermicomposts was higher than initial feed mixtures. Maximum worm biomass was observed in control, i.e., 100% CD (836 mg earthworm(-1)) and the lowest in 30% CD+70% FIS feed mixture (280 mg earthworm(-1)). Cocoon production was started during 6-7th week in all feed mixture except in feed mixture no. 9. After 12 weeks maximum cocoons (57) were counted in 100% CD and minimum (2) in 30% CD+70% FIS feed. The results indicated that food industry sludge could be converted into good quality manure by vermicomposting if mixed up to 30% with cow dung. PMID:19297091

Yadav, Anoop; Garg, V K

2009-08-30

14

Microbiological characterization of vermicomposts by the method of multisubstrate testing  

NASA Astrophysics Data System (ADS)

A new modification of the method of multisubstrate testing (MST, BIOLOG) is suggested. It is based on the kinetic description of bacterial growth on nutrient media during 50 h. The results of the MST represent a set of three parameters (the initial optical density, the maximum specific growth rate, and the maximum optical density) of an equation describing the growth of microbial communities on individual substrates. Methods of multivariate statistics (cluster and discriminant analyses) have been used to compare these parameters for 24 organic substrates. It is supposed that a more detailed description of the growth of microorganisms should improve the information capacity of the MST method. The effect of earthworms on vermicomposting has been studied experimentally with the MST method. An empirical rule allowing one to distinguish between vermicomposts and ordinary composts using the results of MST is suggested. Manure, earthy matter from the intestinal tracts of earthworms ( Eisenia andrei), and their coprolites have been subjected to MST. A functional similarity between manure and fresh coprolites has been found. Also, three different lots of industrial vermicomposts have been compared. The cluster analysis has demonstrated a significant difference between them. The clusters depend on the nature of the initial substrates used for preparing these vermicomposts. Thus, unification of the initial substrates used for composting is necessary to obtain standardized vermicomposts.

Yakushev, A. V.; Byzov, B. A.

2008-11-01

15

The potential reuse of biodegradable municipal solid wastes (MSW) as feedstocks in vermicomposting.  

PubMed

There is an urgent need globally to find alternative sustainable steps to treat municipal solid wastes (MSW) originated from mismanagement of urban wastes with increasing disposal cost. Furthermore, a conglomeration of ever-increasing population and consumerist lifestyle is contributing towards the generation of more MSW. In this context, vermicomposting offers excellent potential to promote safe, hygienic and sustainable management of biodegradable MSW. It has been demonstrated that, through vermicomposting, MSW such as city garbage, household and kitchen wastes, vegetable wastes, paper wastes, human faeces and others could be sustainably transformed into organic fertiliser or vermicompost that provides great benefits to agricultural soil and plants. Generally, earthworms are sensitive to their environment and require temperature, moisture content, pH and sometimes ventilation at proper levels for the optimum vermicomposting process. Apart from setting the optimum operational conditions for the vermicomposting process, other approaches such as pre-composting, inoculating micro-organisms into MSW and redesigning the conventional vermireactor could be introduced to further enhance the vermicomposting of MSW. Thus the present mini-review discusses the potential of introducing vermicomposting in MSW management, the benefits of vermicomposted MSW to plants, suggestions on how to enhance the vermicomposting of MSW as well as risk management in the vermicomposting of MSW. PMID:20718020

Sim, Edwin Yih Shyang; Wu, Ta Yeong

2010-10-01

16

[Effects of herb residue vermicompost on maize growth and soil fertility].  

PubMed

A pot experiment was conducted to evaluate the effects of herb residue vermicompost on maize growth and soil fertility. With the increasing application rate of vermicompost, the plant height, stem diameter, leaf area, and chlorophyll content of maize all increased significantly. After 60 days growth of maize, the soil bulk density in most vermicompost treatments decreased significantly. The soil pH in vermicompost treatments was significantly higher than that in CK and in chemical fertilization treatments. In addition, the soil total nitrogen and organic matter contents in vermicompost treatments were obviously higher than those in chemical fertilization treatments. It was suggested that herb residue vermicompost could be used as an efficient and high-quality organic fertilizer, and its appropriate application could improve soil physical structure, alleviate soil acidification, increase soil organic matter and nitrogen contents, and promote crop growth. PMID:24417126

Li, Jing-Juan; Zhou, Bo; Zhang, Chi; Zhang, Jing; Xu, Huan; Yang, Xiao-Xue; Chen, Xu-Fei; Dai, Jun

2013-09-01

17

Vermicomposting of distillation waste of citronella plant (Cymbopogon winterianus Jowitt.) employing Eudrilus eugeniae.  

PubMed

Laboratory experiment on vermicomposting of distillation waste of java citronella (Cymbopogon winterianus Jowitt.) was carried out employing Eudrilus eugeniae, in two seasonal trials, covering summer and winter periods. Two vermicomposting treatments were conducted in earthen pots, one with citronella plant waste only (CW) and the other, a mixture of citronella waste and cowdung in the proportion 5:1 (CW+CD). Vermicomposting of citronella waste resulted reduction in C/N ratio (83.5-87.7%), enhancement of ash content and a number of macro and micronutrients. The FT-IR spectroscopy of the vermicompost revealed the reduction in aliphatic and aromatic compound as well as increase in amide group after the 105 days stabilization process. The vermicompost output was significantly enhanced in CW+CD treatment than CW treatment. Even, nutrient content of the vermicompost was also higher in CW+CD treatment than CW alone indicating the positive role of cowdung in improvement of quantity and quality. PMID:21550233

Deka, H; Deka, S; Baruah, C K; Das, J; Hoque, S; Sarma, N S

2011-07-01

18

Bioconversion of herbal industry waste into vermicompost using an epigeic earthworm Eudrilus eugeniae.  

PubMed

The aim of the present study was to investigate the potential of bioconversion of industrial herbal waste to vermicompost using Eudrilus eugeniae. Vermibeds were made using a mixture of herbal waste and cowdung (1?:?1) in comparison with the use of cowdung alone as substrate, resulting in vermicomposts 1 and 2, respectively. Different parameters were studied and it was observed that the nutrient profile of vermicompost 1 strongly influenced the growth of pea (Pisum sativum) and marigold plant (Tagetus erectus). The dry and fresh weight of shoots and roots, number of flowers, total yield in terms of fruit showed significant increase with vermicompost 1. Furthermore, vermicompost 1 (herbal waste and cow dung as substrate) resulted in a significant reduction in TOC by 58% in comparison with vermicompost 2 (cowdung as substrate). The C?:?N ratio was less than 20 in vermicompost 1 as well as in vermicompost 2, which indicated an advanced degree of stabilization and mineralization. The ability of earthworms to survive, grow and breed in the vermibed fed with the herbal waste indicates the sustainability and efficiency of a heterogeneous kind of organic waste. The results of the study suggested that bulk industrial herbal waste can be utilized as a substrate for vermicomposting and this can be proposed as an alternative for waste disposal in a clean green manner, promoting the concept of organic farming. PMID:20952444

Kumari, Mamta; Kumar, Sudhir; Chauhan, Rajinder Singh; Ravikanth, K

2011-11-01

19

Chitinophaga eiseniae sp. nov., isolated from vermicompost.  

PubMed

A Gram-negative, rod-shaped bacterial strain, YC6729(T), was isolated from vermicompost collected at Masan, Korea, and its taxonomic position was investigated by a polyphasic taxonomic approach. Strain YC6729(T) grew optimally at 30 °C and at pH 6.5-8.5. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain YC6729(T) belongs to the genus Chitinophaga in the family Chitinophagaceae. It was related most closely to Chitinophaga terrae KP01(T) (96.4?% 16S rRNA gene sequence similarity), Chitinophaga ginsengisegetis Gsoil 040(T) (96.1?%), Chitinophaga arvensicola IAM 12650(T) (96.1?%) and Chitinophaga pinensis DSM 2588(T) (93.3?%). Strain YC6729(T) contained MK-7 as the major menaquinone and homospermidine as the major polyamine. The fatty acids of strain YC6729(T) were iso-C(15?:?0), C(16?:?1)?5c, iso-C(17?:?0) 3-OH, C(16?:?0), anteiso-C(18?:?0) and/or C(18?:?2)?6,9c, iso-C(15?:?0) 2-OH and/or C(16?:?1)?7c, C(14?:?0), iso-C(15?:?0) 3-OH, iso-C(15?:?1) G, C(18?:?1)?5c, iso-C(15?:?1) I and/or C(13?:?0) 3-OH, C(13?:?0) 2-OH, C(16?:?0) 3-OH and unknown fatty acid ECL 13.565. The polar lipid profile contained phosphatidylethanolamine, unknown aminolipids and unknown lipids. The total DNA G+C content of strain YC6729(T) was 48.9 mol%. The phenotypic, chemotaxonomic and phylogenetic data showed that strain YC6729(T) represents a novel species of the genus Chitinophaga, for which the name Chitinophaga eiseniae sp. nov. is proposed. The type strain is YC6729(T) (?=?KACC 13774(T) ?=?DSM 22224(T)). PMID:21057055

Yasir, Muhammad; Chung, Eu Jin; Song, Geun Cheol; Bibi, Fehmida; Jeon, Che Ok; Chung, Young Ryun

2011-10-01

20

Feasibility of vermicomposting for vegetable greenhouse waste recycling.  

PubMed

This study was conducted in order to evaluate the feasibility of Eisenia andrei for vermicomposting heterogeneous-plant (HP), tomato-plant (P), and damaged tomato-fruit (T) greenhouse vegetable wastes. Earthworm growth and reproduction were monitored over a 12-week period, and variations in chemical parameters, enzyme activity, phytotoxicity test, and genetic fingerprinting of bacterial communities were evaluated. While high rates of salinity prevented earthworm survival in HP and P (>10 dS m(-1)), T was vermicomposted recording an adequate earthworm growth and cocoon production. The latter waste was successfully stabilized, as indicated by the significant decrease in its TOC content ( approximately 13-26%) and C:N ratio ( approximately 16-36%) and its high germination indices ( approximately 39-72%). The similar enzyme activities levels and bacterial community fingerprintings recorded in diverse vermicomposts obtained from T waste indicate that this type of waste favoured the existence of analogous bacterial communities responsible for the high degree of stabilization and maturity detected. PMID:20727739

Fernández-Gómez, Manuel J; Romero, Esperanza; Nogales, Rogelio

2010-12-01

21

Vermicomposting potential of Perionyx sansibaricus (Perrier) in different waste materials.  

PubMed

The decomposition efficiency of Perionyx sansibaricus (Perrier) for vermicomposting was evaluated by using a variety of wastes such as agriculture waste, farm yard manure and urban solid waste. Vermicomposting resulted in significant increase in total N (80.8-142.3%), phosphorous (33.1-114.6%) and potassium (26.3-125.2%), whereas decrease in organic C (14.0-37.0%) as well as C:N ratio (52.4-69.8%) in different experimental beddings. P. sansibaricus showed maximum biomass production, growth rate (mg day(-1)), mean cocoon numbers, and reproduction rate (cocoon worm(-1)) in VLL (vegetable waste+leaf litter) as compared to other substrate materials. There was a consistent trend for earthworms' growth and reproduction rate, related to initial N-content of the substrate (P<0.05), but there was no clear effect of C:N ratio of the composted material on earthworm cocoon numbers and weight gain. Earthworm showed minimum total population mortality in VLL and maximum in HHCD (household waste+cow dung), after 150 days of experimentation. The increased level of plant metabolites in end product (vermicompost) and growth patterns of P. sansibaricus in different organic waste resources demonstrated the candidature of this species for wastes recycle operations at low-input basis. PMID:16828549

Suthar, Surendra

2007-04-01

22

Influence of vermicomposting on solid wastes decomposition kinetics in soils*  

PubMed Central

The effect of vermicomposting on kinetic behavior of the products is not well recognized. An incubation study was conducted to investigate C mineralization kinetics of cow manure, sugarcane filter cake and their vermicomposts. Two different soils were treated with the four solid wastes at a rate of 0.5 g solid waste C per kg soil with three replications. Soils were incubated for 56 d. The CO2-C respired was monitored periodically and a first-order kinetic model was used to calculate the kinetic parameters of C mineralization. Results indicated that the percentage of C mineralized during the incubation period ranged from 31.9% to 41.8% and 55.9% to 73.4% in the calcareous and acidic soils, respectively. The potentially mineralizable C (C 0) of the treated soils was lower in the solid waste composts compared to their starting materials. Overall, it can be concluded that decomposable fraction of solid wastes has decreased due to vermicomposting. PMID:17910115

Nourbakhsh, Farshid

2007-01-01

23

Bioconversion of wastes from olive oil industries by vermicomposting process using the epigeic earthworm Eisenia andrei  

Microsoft Academic Search

The present work evaluates the possible bioconversion of wet olive cake by low-cost biostabilization (vermicomposting process). Wet olive cake fresh (WOC), precomposted (WOCP), or mixed with biosolids (WOCB), were vermicomposted for 6 months to obtain organic amendments for agricultural and remediation purposes. The results showed initial differences depending on previous treatment. WOCP was initially more stable, presented a low C:N

Raquel Melgar; Emilio Benitez; Rogelio Nogales

2009-01-01

24

Mechanism of metribuzin herbicide sorption by humic acid samples from peat and vermicompost  

Microsoft Academic Search

Humic acids (one derived from vermicompost, originating from animal manure and treated with the earthworm Eisenia foetida or Lumbricus rubellus, and the other originating from peat) were characterized in respect of their major elemental UV-Vis spectroscopy and acidity. Humic acid, isolated from vermicompost (VHA), was compared with the humic acid sample extracted from peat (PHA) in respect of its chemical

Maria Diva Landgraf; Sebastião Claudino da Silva; Maria Ol??mpia de O. Rezende

1998-01-01

25

Hydrolytic enzyme activities of extracted humic substances during the vermicomposting of a lignocellulosic olive waste  

Microsoft Academic Search

Humic substances and three hydrolytic enzymes (?-glucosidase, phosphatase and urease) were extracted by neutral sodium pyrophosphate from an olive waste (dry olive cake), alone or mixed with municipal biosolids, during a nine month vermicomposting process. Easily degradable compounds decreased during the vermicomposting process because of microbial consumption. When municipal biosolids were added to dry olive cake, microbial activity increased and

E. Benitez; H. Sainz; R. Nogales

2005-01-01

26

The treatment of domestic wastewater using small-scale vermicompost filter beds  

Microsoft Academic Search

The aim of this study is to quantify the effect of filter bed depth and solid waste inputs on the performance of small-scale vermicompost filter beds that treat the soluble contaminants within domestic wastewater. The study also aims to identify environmental conditions within the filters by quantifying the oxygen content and pH of wastewater held within it. Vermicompost is being

M Taylor; W. P Clarke; P. F Greenfield

2003-01-01

27

Evaluation of vermicompost maturity using scanning electron microscopy and paper chromatography analysis.  

PubMed

Vermicompost was produced from flower waste inoculated with biofertilizers using the earthworm Eisenia fetida. Principal component analysis (PCA) and cluster analysis (CA) were carried out on the basis of physicochemical parameters of vermicomposted samples. From the results of the PCA and CA, it was possible to classify two different groups of vermicompost samples in the following categories: E2 and E5; and E1, E3, E4, and control. Scanning electron microscopy and biodynamic circular paper chromatography analysis were used to investigate the changes in surface morphology and functional groups in the control and vermicompost products. SEM analysis of E1-E5 shows more fragment and pores than the control. Chromatographic analysis of vermicompost indicated the mature condition of the compost materials. PMID:24634991

Senthil Kumar, D; Satheesh Kumar, P; Rajendran, N M; Uthaya Kumar, V; Anbuganapathi, G

2014-04-01

28

Microbial diversity of vermicompost bacteria that exhibit useful agricultural traits and waste management potential.  

PubMed

Vermicomposting is a non-thermophilic, boioxidative process that involves earthworms and associated microbes. This biological organic waste decomposition process yields the biofertilizer namely the vermicompost. Vermicompost is a finely divided, peat like material with high porosity, good aeration, drainage, water holding capacity, microbial activity, excellent nutrient status and buffering capacity thereby resulting the required physiochemical characters congenial for soil fertility and plant growth. Vermicompost enhances soil biodiversity by promoting the beneficial microbes which inturn enhances plant growth directly by production of plant growth-regulating hormones and enzymes and indirectly by controlling plant pathogens, nematodes and other pests, thereby enhancing plant health and minimizing the yield loss. Due to its innate biological, biochemical and physiochemical properties, vermicompost may be used to promote sustainable agriculture and also for the safe management of agricultural, industrial, domestic and hospital wastes which may otherwise pose serious threat to life and environment. PMID:23961356

Pathma, Jayakumar; Sakthivel, Natarajan

2012-01-01

29

Vermicomposting of source-separated human faeces by Eisenia fetida: effect of stocking density on feed consumption rate, growth characteristics and vermicompost production.  

PubMed

The main objective of the present study was to determine the optimum stocking density for feed consumption rate, biomass growth and reproduction of earthworm Eisenia fetida as well as determining and characterising vermicompost quantity and product, respectively, during vermicomposting of source-separated human faeces. For this, a number of experiments spanning up to 3 months were conducted using soil and vermicompost as support materials. Stocking density in the range of 0.25-5.00 kg/m(2) was employed in different tests. The results showed that 0.40-0.45 kg-feed/kg-worm/day was the maximum feed consumption rate by E. fetida in human faeces. The optimum stocking densities were 3.00 kg/m(2) for bioconversion of human faeces to vermicompost, and 0.50 kg/m(2) for earthworm biomass growth and reproduction. PMID:21377345

Yadav, Kunwar D; Tare, Vinod; Ahammed, M Mansoor

2011-06-01

30

Changes in labile phosphorus forms during maturation of vermicompost enriched with phosphorus-solubilizing and diazotrophic bacteria.  

PubMed

The aim of this study was to assess the effect of N(2)-fixing and P-solubilizing bacteria during maturation of vermicompost on phosphorus availability. A bacterial suspension containing Burkholderia silvatlantica, Burkholderia spp. and Herbaspirillum seropedicae was applied at the initial stage of vermicomposting. At the end of the incubation time (120days), the nitrogen content had increased by18% compared to uninoculated vermicompost. Water-soluble P was 106% higher in inoculated vermicompost while resin-extractable P increased during the initial vermicomposting stage and was 21% higher at 60days, but was the same in inoculated and uninoculated mature compost. The activity of acid phosphatase was 43% higher in inoculated than uninoculated vermicompost. These data suggest that the introduction of the mixed culture had beneficial effects on vermicompost maturation. PMID:22342081

Busato, Jader G; Lima, Lívia S; Aguiar, Natália O; Canellas, Luciano P; Olivares, Fábio L

2012-04-01

31

Changes in fungal population of fly ash and vinasse mixture during vermicomposting by Eudrilus eugeniae and Eisenia fetida: documentation of cellulase isozymes in vermicompost.  

PubMed

Fly ash (FA) and vinasse (VN), two industrial wastes, are generated in huge amounts and cause serious hazards to the environment. In this experiment, different proportions of these two wastes were used as food for two epigeic earthworms (Eisenia fetida and Eudrilus eugeniae) to standardize the recycling technique of these two wastes and to study their effect on fungal especially cellulolytic fungal population, cellulase activity and their isozyme pattern, chitin content and microbial biomass of waste mixture during vermicomposting. Increasing VN proportion from 25% to 50% or even higher, counts of both fungi and cellulolytic fungi in waste mixtures were significantly (P ? 0.05) increased during vermicomposting. Higher cellulase activity in treatments having 50% or more vinasse might be attributed to the significantly (P ? 0.05) higher concentration of group I isozyme while concentrations of other isozymes (group II and III) of cellulase were statistically at par. Higher chitin content in vinasse-enriched treatments suggested that fungal biomass and fungi-to-microbial biomass ratio in these treatments were also increased due to vermicomposting. Results revealed that Eudrilus eugeniae and Eisenia fetida had comparable effect on FA and VN mixture during vermicomposting. Periodical analysis of above-mentioned biochemical and microbial properties and nutrient content of final vermicompost samples indicated that equal proportion (1:1, w/w) of FA and VN is probably the optimum composition to obtain best quality vermicompost. PMID:21277188

Pramanik, Prabhat; Chung, Young Ryun

2011-06-01

32

Effects of combined composting and vermicomposting of waste sludge on arsenic fate and bioavailability.  

PubMed

Composting and vermicomposting are traditional processes for the treatment of sludge. During these processes, the humification of organic matter has a significant effect on the physicochemical form and distribution of heavy metals. In this study, industrial sludge (groundwater treatment waste) contaminated by arsenic (396 ± 1 mg kg(-1)) was used. Such sludge poses a significant challenge with respect to effective treatment. Composting, vermicomposting (with Eisenia fetida), and the combined approach of composting and vermicomposting were performed to determine the evolution of arsenic speciation, mobility and bioavailability. The composting/vermicomposting was done with sludge, horse manure, and grass in the ratios of 3:6:1. A solution of 0.1M NH4COOCH3 was used as a single extraction solvent for determination of the mobile arsenic pool and targeted arsenic species (As(III), As(V), monomethylarsenic acid - MMA(V), dimethylarsenic acid - DMA(V)). The analysis of arsenic in the extracts was carried out by means of HPLC-ICP-MS spectrometry. In addition, the earthworm species E. fetida was used for bioaccumulation tests that followed the compost and vermicompost processes. The obtained results indicate a reduction in arsenic mobility and bioavailability in all matured composts and vermicomposts. The combined process exhibited a greater effect than compost or vermicompost alone. PMID:25209831

Ma?áková, Blanka; Kuta, Jan; Svobodová, Markéta; Hofman, Jakub

2014-09-15

33

Effect of vermicompost and cucumber cultivar on population growth attributes of the melon aphid (Hemiptera: Aphididae).  

PubMed

Worldwide, the developing industry of cucumbers (Cucumis sativus L.) grown in greenhouses is threatened by damage from sucking pests, especially aphids. Among these, the melon aphid, Aphis gossypii Glover (Hemiptera: Aphididae), is the most serious. We tested the effect of two cucumber cultivars ('Royal' and'Storm') and three vermicompost concentrations (0 [control], 20, and 30%) in field soil on the development and fecundity rates of A. gossypii, by using a randomized complete block design with four replicates as a factorial experiment. The developmental times of nymphs reared on plants grown into the three vermicompost concentrations ranged from 5.5 (0%) to 8.7 (30%) d (on Storm) and from 4.3 (0%) to 7 (30%) d (on Royal). The developmental time of melon aphid's nymphs was greatest on plants grown in the culture medium with 30% vermicompost rate and least on plants reared in the soil without vermicompost. The intrinsic rate of natural increase (r,,) of A. gossypii ranged from 0.204 d(-1) on plants grown in the soil amended with 30% vermicompost rate (on Storm seedlings) to 0.458 d(-1) on plants grown in the soil without vermicompost (on Royal seedlings). Accordingly, our findings confirm that a combination of a low level of vermicompost and a partially resistant cucumber cultivar might play an important role in managing this aphid on cucumbers in greenhouses. PMID:21882707

Razmjou, J; Mohammadi, M; Hassanpour, M

2011-08-01

34

Use of DGGE and COMPOCHIP for investigating bacterial communities of various vermicomposts produced from different wastes under dissimilar conditions.  

PubMed

This study describes the use of denaturing gradient gel electrophoresis (DGGE) and COMPOCHIP (i.e. a microarray targeting typical bacteria of stabilized organic materials and pathogenic bacteria) for investigating the bacterial communities of four different vermicomposts. These included a commercial vermicompost produced from cattle manure (CM) and three vermicomposts produced at pilot-scale by recycling: damaged tomato fruits (DT); olive-mill waste mixed with biosolids (OB); and winery wastes (WW). DGGE provided distinctive fingerprints of each vermicompost, which were statistically related to their particular chemical features. The comparison of the various vermicompost fingerprints showed that they contained bacterial communities with an average similarity coefficient of close to 80%. COMPOCHIP detected the presence of Sphingobacterium, Streptomyces, Alpha-Proteobacteria, Delta-Proteobacteria, and Firmicutes in all the vermicomposts. COMPOCHIP showed differences in the abundance of particular bacterial taxa among the vermicomposts, giving an idea about the usefulness of each vermicompost in the search for bacteria valuable to biotechnology. The joint use of DGGE and COMPOCHIP is a useful tool to compare vermicompost bacterial communities and to assess the potential of different vermicomposts as bioactive organic materials. PMID:22154215

Fernández-Gómez, Manuel J; Nogales, Rogelio; Insam, Heribert; Romero, Esperanza; Goberna, Marta

2012-01-01

35

Copper, nickel and zinc accumulations in lettuce grown in soil amended with contaminated cattle manure vermicompost after sequential cultivations.  

PubMed

The Cu, Ni and Zn accumulations in leaves and roots of lettuce (Lactuca sativa L) grown in soil amended with natural and contaminated cattle manure vermicompost were evaluated. The vermicompost residues containing relatively high metal concentrations used in this work were obtained from a previous experiment, in which vermicompost was applied to removing metals from electroplating wastes. Sequential lettuce cultivations were conducted in pots containing the residual substrates from the first cultivation by adding metal-enriched vermicompost residues. In general, the Cu, Ni and Zn concentrations in leaves and roots of lettuce plants grown in vermicompost enriched with these metals were higher than in the treatment using the natural vermicompost. The metal concentrations in leaves from treatments with natural vermicompost were below the critical concentrations of toxicity to plants. However, the metal concentrations in leaves of the third cultivation in which metal-enriched vermicompost was applied were greater than the upper limit that causes plant toxicity, but no visual damage was observed in the plants. Treatment with Zn-enriched vermicompost resulted in toxicity symptoms, but plant damage did not result in the death of the plant. The chemical fractionation of Cu, Ni and Zn in residues from lettuce cultivation was evaluated by using a sequential extraction procedure and metal concentrations were increased in the different chemical fractions according to the increase of vermicompost dose. PMID:23837328

Jordão, Cláudio P; de Andrade, Renato P; Cotta, Aloísio J B; Cecon, Paulo R; Neves, Júlio C L; Fontes, Mauricio P F; Fernandes, Raphael B A

2013-01-01

36

Vermicomposting of Taro (Colocasia esculenta) with two epigeic earthworm species.  

PubMed

The bioconversion potential of two epigeic species (Eisenia foetida Sav. and Eudrilus eugeniae Kinberg) of earthworms was assessed in terms of efficiency and sustainability of vermicomposting of Taro (Colocasia esculenta (Linn) Schott in Schott and Endl). In different vermireactors, each run in triplicates with one of the two species of earthworms, and 60 g of 6:1 Colocasia:cowdung as feed, vermicasts were produced with steadily increasing output in all the reactors. E. eugeniae was found to be more efficient producer of vermicasts than E. foetida. In all reactors, the earthworms grew well, increasing their weights and number. PMID:16051486

Kurien, J; Ramasamy, E V

2006-07-01

37

Role of vermicompost chemical composition, microbial functional diversity, and fungal community structure in their microbial respiratory response to three pesticides.  

PubMed

The relationships between vermicompost chemical features, enzyme activities, community-level physiological profiles (CLPPs), fungal community structures, and its microbial respiratory response to pesticides were investigated. Fungal community structure of vermicomposts produced from damaged tomato fruits (DT), winery wastes (WW), olive-mill waste and biosolids (OB), and cattle manure (CM) were determined by denaturing gradient gel electrophoresis of 18S rDNA. MicroResp™ was used for assessing vermicompost CLPPs and testing the microbial response to metalaxyl, imidacloprid, and diuron. Vermicompost enzyme activities and CLPPs indicated that WW, OB, and DT had higher microbial functional diversity than CM. The microbiota of the former tolerated all three pesticides whereas microbial respiration in CM was negatively affected by metalaxyl and imidacloprid. The response of vermicompost microbiota to the fungicide metalaxyl was correlated to its fungal community structure. The results suggest that vermicomposts with higher microbial functional diversity can be useful for the management of pesticide pollution in agriculture. PMID:21865033

Fernández-Gómez, Manuel J; Nogales, Rogelio; Insam, Heribert; Romero, Esperanza; Goberna, Marta

2011-10-01

38

Hygienic quality of faeces treated in urine diverting vermicomposting toilets.  

PubMed

On-site sanitation solutions have gained much interest in recent years. One such solution is the urine diverting vermicomposting toilet (UDVT). This study evaluated the hygienic quality of the composted material in six UDVTs in operation in France. Samples were taken from three sampling positions in each toilet, with increasing distance from the fresh material. The concentration of Salmonella spp., Enterococcus spp., thermotolarent coliforms and coliphages were analysed and plotted against a number of variables. The variables found to have the greatest impact was the pH (for Enterococcus spp. and thermotolarent coliforms (TTC)) and time since last maintenance (coliphages). The pH was found to correlate with the material maturity. The current practise of maintenance can cause recontamination of the stabilised material and increase the risk of regrowth of pathogenic microorganisms. A modification in the maintenance procedure, in which a fourth maturation point is introduced, would eliminate this risk. UDVTs were found to be a good on-site sanitation option as the maintenance requirement is small and the system effectively reduced odour and concentration of pathogen and indicator organisms in human waste while keeping the accumulation of material down to a minimum. If the vermicompost is to be used for crops consumed raw, an additional sanitisation step is recommended. PMID:23932466

Lalander, Cecilia H; Hill, Geoffrey B; Vinnerås, Björn

2013-11-01

39

Chemical and spectroscopic characterization of water extractable organic matter during vermicomposting of cattle dung.  

PubMed

This work illustrated the characteristics and transformation of water extractable organic matter (WEOM) during vermistabilization (Eisenia fetida) of cattle dung by means of chemical and spectroscopic methods. The independent experiment conducted in triplicate was sampled at the 0, 7, 14, 21, 35, 60 and 90days. Results showed that the DOC kept steady around 2.7gkg(-1) after day 60 and the DOC/DON ratio decreased from 19.77 to 5.26 till the end of vermicomposting. On the other hand, vermicomposting decreased the aliphatic, proteinaceous, carbohydrates components and increased the aromaticity and oxygen-containing functional groups in the WEOM. Moreover, fluorescence spectra and fluorescence regional integration (FRI) results indicated that protein-like groups were degraded and fulvic and humic acid-like compounds were evolved during the vermicomposting process. In all, this study suggested the suitability of WEOM for monitoring the organics transformation and assessing the maturity in the vermicomposting. PMID:23416619

Lv, Baoyi; Xing, Meiyan; Yang, Jian; Qi, Wensheng; Lu, Yongsen

2013-03-01

40

Dynamics of microbial communities related to biochemical parameters during vermicomposting and maturation of agroindustrial lignocellulose wastes.  

PubMed

Scarce information is available on the changes in abundance of microbial taxa during vermicomposting. Quantitative PCR and DGGE analysis were used to monitor variations in the microbial structure, relative abundance of four bacterial classes and fungi over the vermicomposting and maturation period of wet olive cake (O) and vine shoots (W). Multivariate correlation analysis between microbial structure and abundance, earthworm biomass and enzyme activities revealed similar and divergent interactions in both processes. Although Eisenia fetida development was different, significant correlations were found with ?-glucosidase activity and with bacterial and fungal structure. In the vermicomposting period of O and W, a decline was found in bacteria (94% and 77%), fungi (93% and 94%), and Gammaproteobacteria (56% and 71%) but an increase in Betaproteobacteria and Actinobacteria (62-79%). Alphaproteobacteria increased only in O (26%). Despite the different initial lignocellulose wastes, the mature vermicomposts were similar in microbial and biochemical properties. PMID:23948272

Castillo, Jean Manuel; Romero, Esperanza; Nogales, Rogelio

2013-10-01

41

Growth of bedding plants in commercial potting substrate amended with vermicompost.  

PubMed

Vermicompost has been promoted as a viable alternative container media component for the horticulture industry. The purpose of this research was to investigate the use of vermicompost at different points in the production cycle of tomato, marigold, pepper, and cornflower. The incorporation of vermicompost of pig manure origin into germination media up to 20% v/v enhanced shoot and root weight, leaf area, and shoot:root ratios of both tomato and French marigold seedlings; however amendment with vermicompost had little influence on pepper and cornflower seedling growth. Moreover there was no effect on the germination of seed of any species. When seedlings of tomato, French marigold, and cornflower were transplanted into 6-cell packs there was greater plant growth in media amended with vermicompost compared to the control media, and the greatest growth when vermicompost was amended into both the germination and transplant media. This effect was increased when seedlings in the transplant media were irrigated with water containing fertilizer. PMID:17689243

Bachman, G R; Metzger, J D

2008-05-01

42

Reduction of bioavailability and leachability of heavy metals during vermicomposting of water hyacinth.  

PubMed

Vermicomposting of water hyacinth is a good alternative for the treatment of water hyacinth (Eichhornia crassipes) and subsequentially, beneficial for agriculture purposes. The bioavailability and leachability of heavy metals (Zn, Cu, Mn, Fe, Ni, Pb, Cd, and Cr) were evaluated during vermicomposting of E. crassipes employing Eisenia fetida earthworm. Five different proportions (trials 1, 2, 3, 4, and 5) of cattle manure, water hyacinth, and sawdust were prepared for the vermicomposting process. Results show that very poor biomass growth of earthworms was observed in the highest proportion of water hyacinth (trial 1). The water soluble, diethylenetriaminepentaacetic acid (DTPA) extractable, and leachable heavy metals concentration (percentage of total heavy metals) were reduced significantly in all trials except trial 1. The total concentration of some metals was low but its water soluble and DTPA extractable fractions were similar or more than other metals which were present in higher concentration. This study revealed that the toxicity of metals depends on bioavailable fraction rather than total metal concentration. Bioavailable fraction of metals may be toxic for plants and soil microorganisms. The vermicomposting of water hyacinth by E. fetida was very effective for reduction of bioavailability and leachability of selected heavy metals. Leachability test confirmed that prepared vermicompost is not hazardous for soil, plants, and human health. The feasibility of earthworms to mitigate the metal toxicity and to enhance the nutrient profile in water hyacinth vermicompost might be useful in sustainable land renovation practices at low-input basis. PMID:23757026

Singh, Jiwan; Kalamdhad, Ajay S

2013-12-01

43

Ethylene removal evaluation and bacterial community analysis of vermicompost as biofilter material.  

PubMed

Biofiltration of ethylene provides an environmentally friendly and economically beneficial option relative to physical/chemical removal, where selection of appropriate bed material is crucial. Here the vermicompost with indigenous microorganisms as bed material was evaluated for ethylene removal through batch test and biofilter experiment. Temporal and spatial dynamics of bacterial community in the vermicompost-biofilter under different ethylene loads were characterized by culture and denaturing gradient gel electrophoresis (DGGE) methods. The results showed that ethylene was effectively degraded by the vermicompost under conditions of 25-50% moisture content and 25-35°C temperature. The vermicompost-biofilter achieved nearly 100% ethylene removal up to an inlet load of 11mg m(-3)h(-1). Local nitrogen lack of the vermicompost in the biofilter was observed over operation time, but the change of pH was slight. DGGE analysis demonstrated that the bacterial abundance and community structure of vermicompost-biofilter varied with the height of biofilter under different ethylene loads. Pseudomonads and Actinobacteria were predominant in the biofilter throughout the whole experiment. PMID:21665363

Fu, Yuming; Shao, Lingzhi; Liu, Hui; Tong, Ling; Liu, Hong

2011-08-30

44

Towards understanding the stabilization process in vermicomposting using PARAFAC analysis of fluorescence spectra.  

PubMed

In this study, fluorescence excitation-emission matrix (EEM) combined with parallel factor analysis (PARAFAC) was employed to trace the behavior of water extractable organic matter and assess the stabilization process during vermicomposting of sewage sludge and cattle dung. Experiments using different mixing ratios of sewage sludge and cattle dung were conducted using Eisenia fetida. The results showed that vermicomposting reduced the DOC, DOC/DON ratio and ammonia, while increased the nitrate content. A three-component model containing two humic-like materials (components 1 and 2) and a protein-like material (component 3) was successfully developed using PARAFAC analysis. Moreover, the initial waste composition had a significant effect on the distribution of each component and the addition of cattle dung improved the stability of sewage sludge in vermicomposting. The PARAFAC results also indicated that protein-like materials were degraded and humic acid-like compounds were evolved during vermicomposting. Pearson correlation analysis showed that components 2 and 3 are more suitable to assess vermicompost maturity than component 1. In all, EEM-PARAFAC can be used to track organic transformation and assess biological stability during the vermicomposting process. PMID:25068534

Lv, Baoyi; Xing, Meiyan; Zhao, Chunhui; Yang, Jian; Xiang, Liang

2014-12-01

45

Impact of Parthenium weeds on earthworms (Eudrilus eugeniae) during vermicomposting.  

PubMed

The aim of this work is to evaluate the effect of Parthenium-mediated compost on Eudrilus eugeniae during the process of vermicomposting. Nine different concentrations of Parthenium hysterophorus and cow dung mixtures were used to assess toxicity. The earthworms' growth, fecundity and antioxidant enzyme levels were analysed every 15 days. The antioxidant activities of enzymes [superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx)], considered as biomarkers, indicate the biochemical and oxidative stresses due to the toxin from Parthenium weeds. The earthworms' growth, biomass gain, cocoon production and antioxidant enzymes were in a low level in a high concentration of P. hysterophorus (without cow dung). The results clearly indicated that appropriate mixing of P. hysterophorus quantity is an essential factor for the survival of earthworms without causing any harm. PMID:24938809

Rajiv, P; Rajeshwari, Sivaraj; Rajendran, Venckatesh

2014-11-01

46

Heavy metal behavior and dissolved organic matter (DOM) characterization of vermicomposted pig manure amended with rice straw.  

PubMed

Vermicomposting is an eco-friendly method for disposing of livestock and poultry manure. In addition, dissolved organic matter (DOM) can serve as a carrier that enhances the migration and transformation of heavy metals. Here, pig manure amended with rice straw was vermicomposted with Eisenia fetida. The DOM content, molecular weight distribution, and spectroscopic properties of the amended pig manure were measured before and after vermicomposting. The Cu and Zn concentrations in the earthworms increased from 8.24 and 17.63 to 40.75 and 362.78 mg/kg separately after vermicomposting, and the earthworms also increased the heavy metal availability in the vermicompost. Relative to the DOM properties of conventional compost, the DOM molecular weight decreased and varied widely following vermicomposting, and the C/N ratio of the DOM in the vermicompost treatments decreased from 10.37 to 8.60. The Fourier transform far-infrared (FTIR) and fluorescence spectra of the DOM indicated that the amounts of oxygen-containing structures increased while the ratio of humic acid to fulvic acid decreased following vermicomposting. Accordingly, the earthworms augmented the heavy metal mitigation risk in the pig manure. This augment potentially resulted from the decreased humic acid-to-fulvic acid (HA/FA) ratio from DOM structural changes. PMID:24958537

Zhu, Weiqin; Yao, Wu; Zhang, Zhi; Wu, Yang

2014-11-01

47

Fourier transform-infrared spectroscopy and Gas chromatography-mass spectroscopy: reliable techniques for analysis of Parthenium mediated vermicompost.  

PubMed

Fourier transform infrared spectroscopy (FT-IR) and Gas chromatography-mass spectroscopy have been carried out to investigate the chemical composition of Parthenium mediated vermicompost. Four different concentrations of Parthenium and cow dung mixtures were vermicomposted using the earthworms (Eudrilus eugeniae). FT-IR spectra reveal the absence of Parthenin toxin (sesquiterpene lactone) and phenols in vermicompost which was obtained from high concentration of cow dung mixed treatments. GC-MS analysis shows no phenolic compounds and predominant level of intermediate metabolites such as 4,8,12,16-Tetramethylheptadecan-4-olide (7.61%), 2-Pentadecanone, 6,10,14-trimethyl- (5.29%) and Methyl 16-methyl-heptadecanoate (4.69%) during the vermicomposting process. Spectral results indicated that Parthenin toxin and phenols can be eradicated via vermicomposting if mixed with appropriate quantity of cow dung. PMID:23998948

Rajiv, P; Rajeshwari, Sivaraj; Venckatesh, Rajendran

2013-12-01

48

Towards understanding the effects of additives on the vermicomposting of sewage sludge.  

PubMed

This work evaluated the effects of additives on the chemical properties of the final products (vermicompost) from vermicomposting of sewage sludge and the adaptable characteristics of Eisenia fetida during the process. An experimental design with different ratios of sewage sludge and the additives (cattle dung or pig manure) was conducted. The results showed that the vermicomposting reduced total organic carbon and the quotient of total organic carbon to total nitrogen (C/N ratio) of the initial mixtures and enhanced the stability and agronomical value of the final products. Notably, principal component analysis indicated that the additives had significant effects on the characteristics of the vermicomposts. Moreover, the vermibeds containing cattle dung displayed a better earthworm growth and reproduction than those with pig manure. Additionally, redundancy analysis demonstrated that electrical conductivity (EC), pH, and C/N ratio played crucial roles on earthworm growth and reproduction. In all, the additives with high C/N ratio, pH buffering capacity, and low EC are recommended to be used for vermicomposting of sewage sludge. PMID:25328094

Xing, Meiyan; Lv, Baoyi; Zhao, Chunhui; Yang, Jian

2014-10-21

49

Effect of vermicompost on growth, yield and nutrition status of tomato (Lycopersicum esculentum).  

PubMed

An experiment was conducted to determine the effects of vermicompost on growth, yield and fruit quality of tomato (Lycopersicum esculentum var. Super Beta) in a field condition. The experiment was a randomized complete block design with four replications. The different rates of vermicompost (0, 5, 10 and 15 t ha(-1)) was incorporated into the top 15 cm of soil. During experiment period, fruits were harvested twice in a week and total yield were recorded for two months. At the end of experiment, growth characteristics such as leaf number, leaf area and shoot dry weights were determined. The results revealed that addition of vermicompost at rate of 15 t ha(-1) significantly (at p < 0.05) increased growth and yield compared to control. Vermicompost with rate of 15 t ha(-1) increased EC of fruit juice and percentage of fruit dry matter up to 30 and 24%, respectively. The content of K, P, Fe and Zn in the plant tissue increased 55, 73, 32 and 36% compared to untreated plots respectively. The result of our experiment showed addition of vermicompost had significant (p < 0.05) positive effects on growth, yield and elemental content of plant as compared to control. PMID:18817219

Azarmi, Rasool; Ziveh, Parviz Sharifi; Satari, Mohammad Reza

2008-07-15

50

Carbon and nitrogen mineralization in a vineyard soil amended with grape marc vermicompost.  

PubMed

Vineyard soils in many areas suffer from low organic matter contents, which can be the cause of negative effects such as increasing the risk of erosion, so the use of organic amendments must be considered a good agricultural practice. Even more, if grape marc is recycled as a soil amendment in the vineyards, benefits from a good waste management strategy are also obtained. In the present study, a grape marc from the wine region of Valdeorras (north-west Spain) was used for the production of vermicompost, and this added to a vineyard soil of the same area in a laboratory study. Mixtures of soil and grape marc vermicompost (2 and 4%, dry weight) were incubated for ten weeks at 25°C and the mineralization of C and N studied. The respiration data were fitted to a first-order kinetic model. The rates of grape marc vermicompost which should be added to the vineyard soil in order to maintain the initial levels of organic matter were estimated from the laboratory data, and found to be 1.7?t?ha(-1)?year(-1) of bulk vermicompost (if the present mean temperature is considered) and 2.1?t?ha(-1)?year(-1) of bulk vermicompost (if a 2°C increment in temperature is considered), amounts which could be obtained recycling the grape marc produced in the exploitation. PMID:20837558

Paradelo, Remigio; Moldes, Ana Belén; Barral, María Teresa

2011-11-01

51

Insight into the roles of earthworm in vermicomposting of sewage sludge by determining the water-extracts through chemical and spectroscopic methods.  

PubMed

This work illustrated the effects of earthworm in vermicomposting (Eisenia fetida) by determining the water-extracts through chemical and spectroscopic methods. A field experiment with sludge as the only feed was subjected to vermicomposting and the control (without worms) for three weeks. Compared to the control, vermicomposting resulted in lower pH and water-extractable organic carbon (WEOC) along with higher electrical conductivity (EC). Moreover, vermicomposting caused nearly two times higher content of water-extractable nitrate (WEN-NO3(-)) than the control. Furthermore, fourier transform infrared spectra (FT-IR) revealed that vermicomposting promoted the hydrolysis/transformation of macromolecular organic matters and accelerated the degradation of polysaccharide-like and protein-like materials. Fluorescence spectroscopy also reflected vermicomposting led to higher humification degree than the control. In all, this study supplies a new view to assess the roles of earthworm in vermicomposting of sewage sludge by evaluating the water extracts. PMID:24384315

Yang, Jian; Lv, Baoyi; Zhang, Jie; Xing, Meiyan

2014-02-01

52

Impact of fly ash and phosphatic rock on metal stabilization and bioavailability during sewage sludge vermicomposting.  

PubMed

Sewage sludge (SS) was mixed with different proportions of fly ash (FA) and phosphoric rock (PR), as passivators, and earthworms, Eisenia fetida, were introduced to allow vermicomposting. The earthworm growth rates, reproduction rates, and metal (except Zn and Cd) concentrations were significantly higher in the vermireactors containing FA and PR than in the treatments without passivators. The total organic carbon (TOC) and total metal concentrations in the mixtures decreased, and the mixtures were brought to approximately pH 7 during vermicomposting. There were significant differences in the decreases in the metal bioavailability factors (BFs) between the passivator and control treatments, and adding 20% FA (for Cu and Zn) or 20% PR (for Pb, Cd, and As) to the vermicompost were the most effective treatments for mitigating metal toxicity. The BF appeared to be dependent on TOC in the all treatments, but was not closely dependent on pH in the different vermibeds. PMID:23567692

Wang, Longmian; Zhang, Yimin; Lian, Jianjun; Chao, Jianying; Gao, Yuexiang; Yang, Fei; Zhang, Leiyan

2013-05-01

53

Molecular characteristics of humic acids isolated from vermicomposts and their relationship to bioactivity.  

PubMed

Vermitechnology is an effective composting method, which transforms biomass into nutrient-rich organic fertilizer. Mature vermicompost is a renewable organic product containing humic substances with high biological activity. The aim of this study was to assess the chemical characteristics and the bioactivity of humic acids isolated from different vermicomposts produced with either cattle manure, sugar cane bagasse, sunflower cake from seed oil extraction, or filter cake from a sugar cane factory. More than 200 different molecules were found, and it was possible to identify chemical markers on humic acids according to the nature of the organic source. The large hydrophobic character of humic extracts and the preservation of altered lignin derivatives confer to humic acids the ability to induce lateral root emergence in maize seedlings. Humic acid-like substances extracted from plant biomass residues represent an additional valuable product of vermicomposting that can be used as a plant growth promoter. PMID:25379603

Martinez-Balmori, Dariellys; Spaccini, Riccardo; Aguiar, Natália Oliveira; Novotny, Etelvino Henrique; Olivares, Fábio Lopes; Canellas, Luciano Pasqualoto

2014-11-26

54

Changes of carbon, nitrogen, phosphorous, and potassium content during storage of vermicomposts prepared from different substrates.  

PubMed

The study was conducted to determine the optimum storage time for vermicompost without significant loss of nutrients; nitrogen (N), phosphorous (P), and potassium (K). Cattle manure, paddy straw, municipal solid wastes, and fly ash were used for vermicompost preparations. The dynamics of N, P, and K in the vermicomposts were studied during 180 days of incubation at 28-32 °C. In general, N concentration increased in the first 90-105 days of incubation and then gradually decreased until the 180th day while P and K concentrations steadily decreased over the length of the study, with the rate of loss leveling off after 150 days. The rate of nutrient loss was directly related to the initial level, decreasing the fastest for the nutrients with the highest initial concentrations. Optimum storage times were substrate and N dependent. PMID:25208521

Das, D; Powell, Michael; Bhattacharyya, P; Banik, P

2014-12-01

55

An overview of the environmental applicability of vermicompost: from wastewater treatment to the development of sensitive analytical methods.  

PubMed

The use of vermicompost (humified material) for treating wastewaters, remediating polluted soils, improving agricultural productivity, protecting crop production, and developing sensitive analytical methods is reviewed here, covering the past 17 years. The main advantages of vermicompost, considering all applications covered in this paper, comprise (i) easy acquisition, (ii) low costs, (iii) structural, chemical, and biological characteristics responsible for exceptional adsorptive capacities as well as pollutant degradation, and (iv) the promotion of biocontrol. Specifically, for wastewater decontamination, a considerable number of works have verified the adsorption of toxic metals, but the application of vermicompost is still scarce for the retention of organic compounds. Problems related to the final disposal of enriched vermicompost (after treatment steps) are often found, in spite of some successful destinations such as organic fertilizer. For decontaminating soils, the use of vermicompost is quite scarce, mainly for inorganic pollutants. In agricultural productivity and biocontrol, vermicompost imparts remarkable benefits regarding soil aggregation, plant nutrition, and the development of beneficial microorganisms against phytopathogens. Finally, the use of vermicompost in sensitive analytical methods for quantifying toxic metals is the newest application of this adsorbent. PMID:24578668

Pereira, Madson de Godoi; Neta, Lourdes Cardoso de Souza; Fontes, Maurício Paulo Ferreira; Souza, Adriana Nascimento; Matos, Thaionara Carvalho; Sachdev, Raquel de Lima; dos Santos, Arnaud Victor; da Guarda Souza, Marluce Oliveira; de Andrade, Marta Valéria Almeida Santana; Paulo, Gabriela Marinho Maciel; Ribeiro, Joselito Nardy; Ribeiro, Araceli Verónica Flores Nardy

2014-01-01

56

Flyash - A Lignite Waste Management Through Vermicomposting by Indigenous Earthworms Lampito Mauritii  

Microsoft Academic Search

In view of the environmental problems generated by the large scale production of flyash, increasing attention is now being paid to the recycling of flyash as a good source of nutrients. To reduce the cost of disposal of flyash and best utilization, it was planned to convert the flyash into a valuable vermicompost. This study explored the potential role of

S. Ananthakrishnasamy; S. Sarojini; G. Gunasekaran; G. Manimegala

57

Integrating composting and vermicomposting in the treatment and bioconversion of biosolids  

Microsoft Academic Search

Traditional thermophillic composting is commonly adopted for treatment of organic wastes or for production of organic\\/natural fertilizers. A related technique, called vermicomposting (using earthworms to breakdown the organic wastes) is also becoming popular. These two techniques have their inherent advantages and disadvantages. The integrated approach suggested in this study borrows pertinent attributes from each of these two processes and combines

P. M Ndegwa; S. A Thompson

2001-01-01

58

Food Scrap Vermicomposting and Composting Update John Biernbaum and Brooke Comer, Department of Horticulture  

E-print Network

Food Scrap Vermicomposting and Composting Update John Biernbaum and Brooke Comer, Department survival. A concrete pad with a high tunnel cover was constructed and allowed food scrap hot composting recipes were hot composted during the summer and final products are being evaluated for effectiveness

59

Effects of humic acids from vermicomposts on plant growth  

Microsoft Academic Search

The interactions between earthworms and microorganisms can produce significant quantities of plant growth hormones and humic acids which act as plant regulators. Experiments were designed to evaluate the effects of humic acids extracted from vermicompost and compare them with the action of commercial humic acid in combination with a commercial plant growth hormone, indole acetic acid (IAA) which is a

Norman Q. Arancon; Clive. A. Edwards; Stephen Lee; Robert Byrne

2006-01-01

60

Municipal solid waste (MSW) vermicomposting with an epigeic earthworm, Perionyx ceylanensis Mich.  

PubMed

Municipal solid waste (MSW) was vermicomposted in combination with cowdung (CD) using Perionyx ceylanensis for 50 days. The decomposition rate of 55-78% was observed in different vermibed substrates, the highest being CD followed by 10:1 ratio of CD+MSW. The C/N ratio was reduced from 41.8 to 17.6 and 38.8 to 15.4 in MSW+CD (10:1) and CD, respectively. The difference in the final C/N ratio between MSW+CD (10:1) and CD vermicompost was not significant (p<0.05). The important nutrients, NPK showed significantly (p<0.05) higher contents in vermicomposts than worm-unworked composts. The degradation rate of cellulose and lignin was 37% and 12%, respectively, in 10:1 vermibed mix with P. ceylanensis. The bacterial, fungal and actinomycetes population in vermicompost was significantly higher than in the compost. The biomass, number and cocoons of P. ceylanensis collected after 50 days showed increase with the increase of CD incorporation in MSW. PMID:21511467

Paul, J A John; Karmegam, N; Daniel, Thilagavathy

2011-06-01

61

Study on shrimp waste water and vermicompost as a nutrient source for bell peppers  

Technology Transfer Automated Retrieval System (TEKTRAN)

The aquaculture industry generates significant nutrient-rich wastewater that is released into streams and rivers causing environmental concern. The objective of this controlled environment study was to evaluate the effect of waste shrimp water (SW), vermicompost (VC), at rates of 10%, 20%, 40%, and ...

62

Bacterial community composition and chitinase gene diversity of vermicompost with antifungal activity  

Microsoft Academic Search

Bacterial communities and chitinase gene diversity of vermicompost (VC) were investigated to clarify the influence of earthworms on the inhibition of plant pathogenic fungi in VC. The spore germination of Fusarium moniliforme was reduced in VC aqueous extracts prepared from paper sludge and dairy sludge (fresh sludge, FS). The bacterial communities were examined by culture-dependent and -independent analyses. Unique clones

Muhammad Yasir; Zubair Aslam; Seon Won Kim; Seon-Woo Lee; Che Ok Jeon; Young Ryun Chung

2009-01-01

63

Potential utilization of bagasse as feed material for earthworm Eisenia fetida and production of vermicompost.  

PubMed

In the present work bagasse (B) i.e waste of the sugar industry, was fed to Eisenia fetida with cattle dung (CD) support as feed material at various ratios (waste: CD) of 0:100 (B0), 25:75 (B25), 50:50 (B50), 75:25 (B75) and 100:0 (B100) on dry weight basis. Co-composting with cattle dung helped to improve their acceptability for E. fetida and also improved physico-chemical characteristics. Best appropriate ratio for survival, maximum growth and population buildup of E. fetida was determined by observing population buildup, growth rate, biomass, mortality and cocoon formation. Minimum mortality and highest population size of worms was observed in 50:50 (B50) ratio. Increasing concentrations of wastes significantly affected the growth and reproduction of worms. Nutrients like nitrogen, phosphorus and sodium increased from pre-vermicompost to post-vermicompost, while organic carbon, and C:N ratio decreased in all the end products of post-vermicomposting. Heavy metals decreased significantly from initial except zinc, iron and manganese which increased significantly. Scanning electron microscopy (SEM) was used to recognize the changes in texture in the pre and post-vermicomposted samples. The post-vermicomposted ratios in the presence of earthworms validate more surface changes that prove to be good manure. The results observed from the present study indicated that the earthworm E. fetida was able to change bagasse waste into nutrient-rich manure and thus play a major role in industrial waste management. PMID:25625035

Bhat, Sartaj Ahmad; Singh, Jaswinder; Vig, Adarsh Pal

2015-01-01

64

Transformation and availability of nutrients and heavy metals during integrated composting-vermicomposting of sewage sludges.  

PubMed

Transformation and availability of nutrients and some heavy metals were assessed during the integrated composting-vermicomposting of both primary sewage sludge (PSS) and waste activated sewage sludge (WAS) using matured vermicompost as indigenous bulking material and employing Eisenia fetida as earthworm species. Vermicomposting resulted in significant increase in total N (TN) (PSS: 41.7-64.6%, F=11.6, P<0.05; WAS: 36.4-58.6%, F=6.4, P<0.05), water soluble N (WSN) (PSS: 37.1-50.5%, F=30.1, P<0.05; WAS: 40.1-53.0%, F=27.6, P<0.05), total P (TP) (PSS: 39.9-69.8%, F=27.1, P<0.05; WAS: 32.2-56.6%, F=21.4, P<0.05) and water soluble P (WSP) (PSS: 25.2-34.3%, F=163.9, P<0.05; WAS: 24.1-34.2%, F=144.3, P<0.05) as compared to the initial compost material depending on different experimental conditions. The study demonstrated that the vermicomposting significantly improved the availability of nutrients in sewage sludges. In addition, vermicomposting considerably reduced the availability of heavy metals except Fe and Mn, presumably by forming organic-bound complexes in spite of several fold increase in their total content. The environmental conditions (i.e., temperature and relative humidity), in general, showed significant effect on the transformation and availability of nutrients and heavy metals. There was no effect of earthworm density on the transformation and availability of heavy metals and nutrients except N and P, possibly due to prior exposure during acclimation period in sewage sludge. PMID:22277776

Hait, Subrata; Tare, Vinod

2012-05-01

65

Chemical and microbiological changes during vermicomposting of coffee pulp using exotic (Eudrilus eugeniae) and native earthworm (Perionyx ceylanesis) species.  

PubMed

Coffee pulp is the main solid residue from the wet processing of coffee berries. Due to presence of anti-physiological and anti-nutritional factors, coffee pulp is not considered as adequate substrate for bioconversion process by coffee farmers. Recent stringent measures by Pollution Control authorities, made it mandatory to treat all the solid and liquid waste emanating from the coffee farms. A study was conducted to evaluate the efficiency of an exotic (Eudrilus eugeniae) and a native earthworm (Perionyx ceylanesis) from coffee farm for decomposition of coffee pulp into valuable vermicompost. Exotic earthworms were found to degrade the coffee pulp faster (112 days) as compared to the native worms (165 days) and the vermicomposting efficiency (77.9%) and vermicompost yield (389 kg) were found to significantly higher with native worms. The multiplication rate of earthworms (280%) and worm yield (3.78 kg) recorded significantly higher with the exotic earthworms. The percentage of nitrogen, phosphorous, potassium, calcium and magnesium in vermicompost was found to increase while C:N ratio, pH and total organic carbon declined as a function of the vermicomposting. The plant nutrients, nitrogen (80.6%), phosphorus (292%) and potassium (550%) content found to increase significantly in the vermicompost produced using native earthworms as compared to the initial values, while the calcium (85.7%) and magnesium (210%) content found to increase significantly in compost produced utilizing exotic worms. Vermicompost and vermicasts from native earthworms recorded significantly higher functional microbial group's population as compared to the exotic worms. The study reveals that coffee pulp can be very well used as substrate for vermicomposting using exotic (Eudrilus eugeniae) and native earthworm (Perionyx ceylanesis). PMID:20922463

Raphael, Kurian; Velmourougane, K

2011-06-01

66

Application of a set of complementary techniques to understand how varying the proportion of two wastes affects humic acids produced by vermicomposting.  

PubMed

A better understanding of how varying the proportion of different organic wastes affects humic acid (HA) formation during vermicomposting would be useful in producing vermicomposts enriched in HAs. With the aim of improving the knowledge about this issue, a variety of analytical techniques [UV-visible spectroscopic, Fourier transform infrared, fluorescence spectra, solid-state cross-polarization magic-angle spinning (CPMAS) (13)C nuclear magnetic resonance (NMR) spectra, and thermal analysis] was used in the present study to characterize HAs isolated from two mixtures at two different ratios (2:1 and 1:1) of tomato-plant debris (TD) and paper-mill sludge (PS) before and after vermicomposting. The results suggest that vermicomposting increased the HA content in the TD/PS 2:1 and 1:1 mixtures (15.9% and 16.2%, respectively), but the vermicompost produced from the mixture with a higher amount of TD had a greater proportion (24%) of HAs. Both vermicomposting processes caused equal modifications in the humic precursors contained in the different mixtures of TD and PS, and consequently, the HAs in the vermicomposts produced from different waste mixtures exhibited analogous characteristics. Only the set of analytical techniques used in this research was able to detect differences between the HAs isolated from each type of vermicompost. In conclusion, varying the proportion of different wastes may have a stronger influence on the amount of HAs in vermicomposts than on the properties of HAs. PMID:25318702

Fernández-Gómez, Manuel J; Nogales, Rogelio; Plante, Alain; Plaza, César; Fernández, José M

2015-01-01

67

Efficacy of Vermicompost against fertilizers on Cicer and Pisum and on population diversity of N2 fixing bacteria.  

PubMed

Vermicompost is a very important biofertilizer produced through the artificial cultivation of worms i.e. Vermiculture. Vermicompost is enriched with all beneficial soil bacteria and also contain many of the essential plant nutrients like N, P, K and micronutrients. It increases soil aeration, texture and jilt. In this work, study is being carried out to find out the effect of different fertilizers such as DAF, FYM and Vermicompost on various morphological parameters and on the in vitro growth of bacterial colonies and its diversity in relation to two important leguminous plants such as Pisum sp. and Cicer sp. Results showed that plant grown in Vermicompost pretreated soil exhibited maximum increase in all morphological parameters such as root length, shoot length, number of root branches, number of stem branches, number of leaves, number of flowers, number of pods and number of root nodules in four months sampling in comparison to untreated, FYM treated and DAP treated soils. Further in Vermicompost pretreated soil, number of N2 fixing bacterial colony was maximum and showed highest diversity indices (1.6 and 0.99 and 2.0 and 0.99 for Cicer sp. and Pisum sp. respectively) than FYM, DAP and untreated control. Thus not only does the Vermicompost stimulate plant growth but also it increases the N2 fixing bacterial population in soil and also its diversity. PMID:21046998

Sinha, Jayanta; Biswas, Chanchal Kumar; Ghosh, Arup; Saha, Amit

2010-05-01

68

Changes in the chemical characteristics of water-extracted organic matter from vermicomposting of sewage sludge and cow dung.  

PubMed

The chemical changes of water-extractable organic matter (WEOM) from five different substrates of sewage sludge enriched with different proportions of cow dung after vermicomposting with Eisenia fetida were investigated using various analytical approaches. Results showed that dissolved organic carbon, chemical oxygen demand, and C/N ratio of the substrates decreased significantly after vermicomposting process. The aromaticity of WEOM from the substrates enhanced considerably, and the amount of volatile fatty acids declined markedly, especially for the cow dung substrate. Gel filtration chromatography analysis showed that the molecular weight fraction between 10(3) and 10(6) Da became the main part of WEOM in the final product. 1H nuclear magnetic resonance spectra revealed that the proportion of H moieties in the area of 0.00-3.00 ppm decreased, while increasing at 3.00-4.25 ppm after vermicomposting. Fluorescence spectra indicated that vermicomposting caused the degradation of protein-like groups, and the formation of fulvic and humic acid-like compounds in the WEOM of the substrates. Overall results indicate clearly that vermicomposting promoted the degradation and transformation of liable WEOM into biological stable substances in sewage sludge and cow dung alone, as well as in mixtures of both materials, and testing the WEOM might be an effective way to evaluate the biological maturity and chemical stability of vermicompost. PMID:22230755

Xing, Meiyan; Li, Xiaowei; Yang, Jian; Huang, Zhidong; Lu, Yongsen

2012-02-29

69

Short-term effects of combined iprodione and vermicompost applications on soil microbial community structure.  

PubMed

The use of compost amendments to bioremediate potential organic pollutants in agricultural soils has recently become an increasingly important field of research. Although several fungicides have been extensively used to control a wide range of soil-borne fungal diseases, little is known about the impact of applying these pesticides on the structure and function of microbial communities in soils amended with vermicompost. The aim of this study was to evaluate the effect of a combined treatment of iprodione and vermicompost on soil microbiological parameters under laboratory conditions. The study was carried out on agricultural and grassland soils to identify the effect of iprodione application at field rate (FR) and 10-times FR (10 FR) with and without vermicompost (VCH) on iprodione breakdown, fluorescein diacetate activity (FDA), total fatty acid methyl ester (FAME) profiles, total protein content, and protein profiles by using sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). Our results indicate that the addition of vermicompost decreased the iprodione breakdown at days 30 and 60 in non-sterilised agricultural soil and at 60 days in sterilised and non-sterilised grassland soil. Independent of vermicompost amended treatments, iprodione was found to mainly alter microbial communities after 30 days of incubation. On day 30, separation between communities treated with iprodione 10 FR and iprodione 10FR + VCH treatments were well defined in both agricultural and grassland soils. Within each soil type, our results showed no difference in the total protein content. However, the protein content in the grassland soil was clearly higher than in the agricultural soil. SDS-PAGE gels revealed that the treatments applied to the agricultural soil using iprodione at the highest dosages (iprodione 10FR and iprodione 10FR+VCH) resulted in an alteration of the band pattern. In conclusion, the experiments revealed that the addition of vermicompost may decrease the breakdown of iprodione in soils. Furthermore, elevated dosages of iprodione may potentially affect the microbial community structure and diversity of the soil, which may lead to the deterioration of soil quality and fertility. PMID:22115616

Verdenelli, Romina A; Lamarque, Alicia L; Meriles, José M

2012-01-01

70

Direct, Rapid and Sustainable Vermicomposting of the Leaf Litter of Neem (Azadirachta indica).  

PubMed

The recently developed concept of high rate vermicomposting was successfully used to enable direct vermicomoposting of neem leaves-without any pre-composting or cow dung supplementation as previously reported processes had necessitated. All the three epigeic species of earthworms that were explored, Eudrilus eugeniae, Eisenia fetida and Perionyx excavatus, provided efficient vermicast production with no mortality, persistent gain in body mass and good fecundity over the 16 months long period of reactor operation. In this period, all reactors were pulse-fed at the solid retention time of 20 days and were operated in the pseudo discretized continuous operation protocol developed earlier by the authors. With this, it was possible to almost completely dampen the influence of natural biodegradation of the feed or grazing by the earthworm born in the vermireactors. The findings, thus, conclusively prove that, all-through, the brisk vermicomposting was caused almost entirely by the action of the 'parent' earthworms on fresh feed. PMID:25344437

Nayeem-Shah, M; Gajalakshmi, S; Abbasi, S A

2015-01-01

71

Composting versus vermicomposting: a comparative study of organic matter evolution through straight and combined processes.  

PubMed

Changes in physical and chemical characteristics of an organic waste (tomato crop waste) throughout composting (COM), vermicomposting (VER) and the combination of both processes (C+V) were assessed at five selected stages. COM consisted of a combination of the static Rutgers system with forced aeration and pile turning. For VER Eisenia worms were fed with the raw material. For C+V pre-composted material was added to the worms. Particle size decreased during COM, yet it increased during VER and C+V due to the amalgamation of small particles. pH was alkaline throughout the processes. Heavy irrigation during vermicomposting resulted in greater decrease of EC and greater leaching of organic matter, total nitrogen and most macronutrients in VER and C+V than in COM. Final materials were not phytotoxic but compost could have salinity related problems. Thus, COM, VER and C+V produced treated organic material, which could be suitable for horticultural purposes. PMID:22705537

Fornes, Fernando; Mendoza-Hernández, Daicy; García-de-la-Fuente, Rosana; Abad, Manuel; Belda, Rosa M

2012-08-01

72

Emissions of ammonia and greenhouse gases during combined pre-composting and vermicomposting of duck manure.  

PubMed

Combined pre-composting and vermicomposting has shown potential for reclamation of solid wastes, which is a significant source of ammonia (NH3), and greenhouse gases (GHG), including nitrous oxide (N2O), methane (CH4), and carbon dioxide (CO2). Earthworms and amendments may both affect physico-chemical characteristics that control gas-producing processes, and thus affect NH3 and GHG emissions. Here, we used two-way ANOVA to test the effects of addition of reed straw and combined addition of reed straw and zeolite on NH3 and GHG emissions during pre-composting of duck manure, either with or without a follow-up phase of vermicomposting. Results showed that cumulative N2O, CH4, and CO2 emissions during pre-composting and vermicomposting ranged from 92.8, 5.8, and 260.6 mg kg(-)(1) DM to 274.2, 30.4, and 314.0 mg kg(-1) DM, respectively. Earthworms and amendments significantly decreased N2O and CH4 emissions. Emission of CO2 was not affected by earthworms, but increased in responses to addition of reed straw. Cumulative NH3 emission ranged from 3.0 to 8.1 g kg(-1) DM, and was significantly decreased by reed straw and zeolite addition. In conclusion, combined pre-composting and vermicomposting with reed straw and zeolite addition would be strongly recommended in mitigating emissions of N2O, CH4, and NH3 from duck manure. Moreover, this method also provides nutrient-rich products that can be used as a fertilizer. PMID:24835490

Wang, Jinzhi; Hu, Zhengyi; Xu, Xingkai; Jiang, Xia; Zheng, Binghui; Liu, Xiaoning; Pan, Xubin; Kardol, Paul

2014-08-01

73

Effects of vermicomposts produced from food waste on the growth and yields of greenhouse peppers  

Microsoft Academic Search

Vermicomposts, produced commercially from food wastes, were substituted at a range of different concentrations into a soil-less commercial bedding plant container medium, Metro-Mix 360 (MM360), to evaluate their effects on the growth and yields of peppers in the greenhouse. Six-week-old peppers (Capsicum annum L. var. California) were transplanted into 100%, 80%, 60%, 40%, 20% or 10% MM360 substituted with 0%,

Norman Q. Arancon; Clive A. Edwards; Rola Atiyeh; James D. Metzger

2004-01-01

74

Suitability of aquaculture effluent solids mixed with cardboard as a feedstock for vermicomposting  

Microsoft Academic Search

Recirculating aquaculture systems are highly intensive culture systems that actively filter and reuse water, thus minimizing water requirements and creating relatively small volumes of concentrated waste (compared to flow-through aquaculture systems). Vermicomposting, which uses earthworms to stabilize and transform organic wastes into valuable end-products, has been proposed as an alternative treatment technology for high-moisture-content organic wastes from agricultural, industrial and

Lori Marsh; Scott Subler; Sudanshu Mishra; Michele Marini

2005-01-01

75

Vermicomposting grape marc yields high quality organic biofertiliser and bioactive polyphenols.  

PubMed

Grape is the largest fruit crop in the world, and most (80%) of the harvested fruit is used to make wine. The main by-product of the wine industry is called grape marc, which consists of the stalks, skin, pulp and seeds that remain after pressing the grapes. The aim of this study was to evaluate whether grape marc could be processed by vermicomposting on an industrial scale to yield both a high-quality organic, polyphenol-free fertiliser and grape seeds (as a source of bioactive polyphenols). Vermicomposting reduced the biomass of grape marc substantially (by 58%), mainly as a result of the loss of volatile solids. After 2?weeks, the process yielded a nutrient-rich, microbiologically active and stabilised peat-like material that was easily separated from the seeds by sieving. Although the polyphenol content of the seeds was considerably reduced, this disadvantage was outweighed by the ease of separation of the seeds. Separation of the seeds also eliminated the polyphenol-associated phytotoxicity from the vermicompost. The seeds still contained useful amounts of polyphenols, which could be directly extracted for use in the pharmaceutical, cosmetic and food industries. The procedure described is effective, simple and economical, and could easily be scaled up for industrial application. PMID:25349068

Domínguez, Jorge; Martínez-Cordeiro, Hugo; Alvarez-Casas, Marta; Lores, Marta

2014-12-01

76

Microbiological community analysis of vermicompost tea and its influence on the growth of vegetables and cereals.  

PubMed

Vermicompost, the digestion product of organic material by earthworms, has been widely reported to have a more positive effect on plant growth and plant health than conventional compost. A study was conducted to investigate the effects of different vermicompost elutriates (aerated compost teas) on soils and plant growth. The teas were analyzed by chemical, microbiological, and molecular methods accompanied by plant growth tests at laboratory and field scale. The number of microorganisms in the teas increased during the extraction process and was affected by substrate addition. The vermicompost tea found to increase plant growth best under laboratory tests was applied to cereals (wheat and barley) and vegetables (Raphanus sativus, Rucola selvatica, and Pisum sativum) in a field study. The results revealed no effects of tea application on plant yield; however, sensoric tests indicated an improvement in crop quality. The soils from laboratory and field studies were investigated to detect possible microbial or chemical changes. The results indicated that minor changes to the soil microbial community occurred following tea application by foliar spray in both the laboratory-scale and field-scale experiments. PMID:22712623

Fritz, J I; Franke-Whittle, I H; Haindl, S; Insam, H; Braun, R

2012-07-01

77

Pilot-scale study of efficient vermicomposting of agro-industrial wastes.  

PubMed

Pilot-scale vermicomposting was explored using Eudrilus eugeniae for 90 days with 45 days preliminary decomposition using different agro-industrial wastes as substrates. Spent wash and pressmud were mixed together (referred to as PS) and then combined with cow dung (CD) at five different ratios of PS:CD, namely, 25:75 (T1), 50:50 (T2), 75:25 (T3), 85:15 (T4) and 100 (T5), with two replicates for each treatment. All vermibeds expressed a significant decrease in pH (11.4-14.8%), organic carbon (4.2-30.5%) and an increase in total nitrogen (6-29%), AP (5-29%), exchangeable potash (6-21%) and turnover rate (52-66%). Maximum mortality (18.10%) of worms was recorded in T5 treatment. A high manurial value and a matured product was achieved in T3 treatment. The data reveal that pressmud mixed with spent wash can be decomposed through vermicomposting and can help to enhance the quality of vermicompost. PMID:22720423

Kumar, Vaidyanathan Vinoth; Shanmugaprakash, M; Aravind, J; Namasivayam, S Karthick Raja

2012-01-01

78

Swine manure vermicomposting via housefly larvae (Musca domestica): the dynamics of biochemical and microbial features.  

PubMed

Improper handling of animal manure generated from concentrated swine operations greatly deteriorates water ecosystems. In this study, a full-scale vermireactor using housefly larvae (Musca domestica) was designed to investigate the effectiveness and efficiency of swine manure reduction, and to explore the associated biochemical-biological mechanisms. The one-week larvae vermireactor resulted in a total weight reduction rate of 106±17 kg/(m(3) d) and moisture reduction of 80.2%. Microbial activities in manure decreased by 45% after vermicomposting, while the activities of cellulose, proteases, and phosphatases in the vermicompost were significantly 69 times, 48%, and 82% lower than those in raw manure, respectively. The vermicompost was exclusively dominated by Entomoplasma somnilux, Proteobacterium, and Clostridiaceae bacterium where the microbial diversity was decreased from 2.57 in raw manure to 1.77. Correlation coefficients statistic showed that organic C might be a key indicator of the biochemical features and microbial functions of the larvae vermireactor. PMID:22728759

Zhang, ZhiJian; Wang, Hang; Zhu, Jun; Suneethi, Sundar; Zheng, JianGuo

2012-08-01

79

Critical tests for determination of microbiological quality and biological activity in commercial vermicompost samples of different origins.  

PubMed

The aim of the present paper was to show that differences in biological activity among commercially produced vermicompost samples can be found by using a relatively simple test system consisting of microorganism tests on six microbiological media and soilless seedling growth tests with four vegetable crop species. Significant differences in biological properties among analyzed samples were evident both at the level of microbial load as well as plant growth-affecting activity. These differences were mostly manufacturer- and feedstock-associated, but also resulted from storage conditions of vermicompost samples. A mature vermicompost sample that was produced from sewage sludge still contained considerable number of Escherichia coli. Samples from all producers contained several potentially pathogenic fungal species such as Aspergillus fumigatus, Pseudallescheria boidii, Pseudallescheria fimeti, Pseudallescheria minutispora, Scedosporium apiospermum, Scedosporium prolificans, Scopulariopsis brevicaulis, Stachybotrys chartarum, Geotrichum spp., Aphanoascus terreus, and Doratomyces columnaris. In addition, samples from all producers contained plant growth-promoting fungi from the genera Trichoderma and Mortierella. The described system can be useful both for functional studies aiming at understanding of factors affecting quality characteristics of vermicompost preparations and for routine testing of microbiological quality and biological activity of organic waste-derived composts and vermicomposts. PMID:23504062

Grantina-Ievina, Lelde; Andersone, Una; Berkolde-P?re, Dace; Nikolajeva, Vizma; Ievinsh, Gederts

2013-12-01

80

Vermicomposting potentiality of Perionyx excavatus for recycling of waste biomass of Java citronella--an aromatic oil yielding plant.  

PubMed

Laboratory investigation on vermicomposting efficacy of Perionyx excavatus for recycling of distillation waste biomass of java citronella (Cymbopogon winterianus Jowitt) was carried out in two seasonal trials i.e. summer and winter periods. The experiment was conducted in earthen pots using a mixture of citronella waste material and cowdung in the proportion of 5:1. A control treatment without earthworms was setup for comparison of the results. The vermicompost had shown 5.8 folds reduction in C/N ratio and 5.6 folds enhancement in ash content. The nutrient contents (N, P, K, Ca and Mg) in the vermicompost had increase in the range of 1.2 - 4.1 fold than the initial level. The FT-IR spectra of the vermicompost confirmed increase in nitrogen rich compounds and decrease in aliphatic/aromatic compounds as compared to the initial level of the biowaste materials. The vermicomposting process is influenced by seasonal variation and summer was more productive than winter. PMID:22014704

Deka, H; Deka, S; Baruah, C K; Das, J; Hoque, S; Sarma, H; Sarma, N S

2011-12-01

81

Biological and chemical reactivity and phosphorus forms of buffalo manure compost, vermicompost and their mixture with biochar.  

PubMed

This study characterized the carbon and phosphorus composition of buffalo manure, its compost and vermicompost and investigated if presence of bamboo biochar has an effect on their chemical and biological reactivity. The four substrates were characterized for chemical and biochemical composition and P forms. The biological stability of the four substrates and their mixtures were determined during an incubation experiment. Their chemical reactivity was analyzed after acid dichromate oxidation. Biological reactivity of these substrates was related to their soluble organic matter content, which decreased in the order buffalo manure>compost>vermicompost. Phosphorus was labile in all organic substrates and composting transformed organic P into plant available P. The presence of biochar led to a protection of organic matter against chemical oxidation and changed their susceptibility to biological degradation, suggesting that biochar could increase the carbon sequestration potential of compost, vermicompost and manure, when applied in mixture. PMID:24071441

Ngo, Phuong-Thi; Rumpel, Cornelia; Ngo, Quoc-Anh; Alexis, Marie; Velásquez Vargas, Gabriela; Mora Gil, Maria de la Luz; Dang, Dinh-Kim; Jouquet, Pascal

2013-11-01

82

Cadmium accumulation retard activity of functional components of photo assimilation and growth of rice cultivars amended with vermicompost.  

PubMed

Cadmium (Cd) uptake mediated alterations in functional components of photo assimilation during conversion of cow dung and poultry cast to vermicompost were studied in two Indian rice cultivars; MO 16 and MTU 7029. It was found that higher amount of Cd accumulate in plants grown in soil amended with vermicompost which in turn damaged functional components in photo assimilation. Enhancement of root growth was recognized as reason for Cd accumulation. Metabolic alterations noticed among plants were not taken place during application of raw materials used for vermicomposting such as cow dung and poultry cast amendment. Rice varieties accumulated Cd differentially where MTU 7029 accumulated more Cd compare to MO 16. It was also noticed that existence of negative correlation between zinc status of the plant and Cd accumulation. PMID:23819289

Sebastian, Abin; Prasad, M N V

2013-01-01

83

Influence of cow manure vermicompost on the growth, metabolite contents, and antioxidant activities of Chinese cabbage ( Brassica campestris ssp. chinensis )  

Microsoft Academic Search

The effects of cow manure vermicompost on plant growth, metabolite contents, and antioxidant activities of Chinese cabbage\\u000a were investigated in pot cultures. Five treatments were designed by mixing vermicompost and soil at ratio of 0:7, 1:7, 2:7,\\u000a 4:7, 7:0 (w\\/w). Marketable weight of Chinese cabbage was significantly (p?

Donghong Wang; Qinghua Shi; Xiufeng Wang; Min Wei; Jinyu Hu; Jun Liu; Fengjuan Yang

2010-01-01

84

Restoring biochemical activity and bacterial diversity in a trichloroethylene-contaminated soil: the reclamation effect of vermicomposted olive wastes  

Microsoft Academic Search

Background, aim, and scope  In this work, the potential for using olive-mill solid waste as an organic amendment for biochemical and biological restoration\\u000a of a trichloroethylene-contaminated soil, which has previously been stabilized through vermicomposting processes, has been\\u000a explored.\\u000a \\u000a \\u000a \\u000a Materials and methods  Trichloroethylene-contaminated water was pumped into soil columns with a layer of vermicompost at 10-cm depth (biobarrier\\u000a system). The impacts of the

Beatriz Moreno; Astrid Vivas; Rogelio Nogales; Cristina Macci; Grazia Masciandaro; Emilio Benitez

2009-01-01

85

Technology for efficient and successful delivery of vermicompost colonized bioinoculants in Pogostemon cablin (patchouli) Benth.  

PubMed

The usefulness of vermicompost as a supporting media for growth of bioinoculants was evaluated for successful transfer of sufficient propagules of bioinoculants into the organic fields. The rooted plants after 50 days were pot and field tested for their growth and yield performances when transplanted along with rooting medium into pots/organic fields. The rooting medium, 50 days of inoculation, contained sufficient population of bioinoculants and arbuscular mycorrhizal (AM) fungi. Treatment with bioinoculants (except Trichoderma harzianum) substantially improved the root and shoot biomass of nursery raised rooted cuttings particularly in treatments containing Azotobacter chroococcum (150 and 91.67%, respectively), Glomus intraradices (117 and 91.67%, respectively) and Pseudomonas fluorescens (117 and 83%, respectively). The transplanted rooted plants in pots, over two harvests, yielded higher shoot biomass when rooting medium contained A. chroococcum (147%), G. intraradices (139%) and P. fluorescencs (139%). Although the treatments did not affect the content of essential oil, the quality of essential oil as measured by the content of patchouli alcohol improved with Glomus aggregatum (18%). Similar trends were observed in field trials with significantly higher biomass yield achieved with A. chroococcum (51%), G. intraradices (46%) and P. fluorescencs (17%) compared to control (un-inoculated) plots. Increased in herb yield was found to be related with increased nutrient uptake. The population of bioinoculants in the rhizosphere was observed to be considerably higher in plots receiving vermicompost enriched with bioinoculants. This technology can be a successful way of delivering sufficient propagules of bioinoculants along with vermicompost especially in organic fields. PMID:22806808

Singh, Rakshapal; Divya, S; Awasthi, Ashutosh; Kalra, Alok

2012-01-01

86

Cloning and functional characterization of endo-?-1,4-glucanase gene from metagenomic library of vermicompost.  

PubMed

In the vermicomposting of paper mill sludge, the activity of earthworms is very dependent on dietetic polysaccharides including cellulose as energy sources. Most of these polymers are degraded by the host microbiota and considered potentially important source for cellulolytic enzymes. In the present study, a metagenomic library was constructed from vermicompost (VC) prepared with paper mill sludge and dairy sludge (fresh sludge, FS) and functionally screened for cellulolytic activities. Eighteen cellulase expressing clones were isolated from about 89,000 fosmid clones libraries. A short fragment library was constructed from the most active positive clone (cMGL504) and one open reading frame (ORF) of 1,092 bp encoding an endo-?-1,4-glucanase was indentified which showed 88% similarity with Cellvibrio mixtus cellulase A gene. The endo-?-1,4-glucanase cmgl504 gene was overexpressed in Escherichia coli. The purified recombinant cmgl504 cellulase displayed activities at a broad range of temperature (25-55°C) and pH (5.5-8.5). The enzyme degraded carboxymethyl cellulose (CMC) with 15.4 U, while having low activity against avicel. No detectable activity was found for xylan and laminarin. The enzyme activity was stimulated by potassium chloride. The deduced protein and three-dimensional structure of metagenome-derived cellulase cmgl504 possessed all features, including general architecture, signature motifs, and N-terminal signal peptide, followed by the catalytic domain of cellulase belonging to glycosyl hydrolase family 5 (GHF5). The cellulases cloned in this work may play important roles in the degradation of celluloses in vermicomposting process and could be exploited for industrial application in future. PMID:23812813

Yasir, Muhammad; Khan, Haji; Azam, Syed Sikander; Telke, Amar; Kim, Seon Won; Chung, Young Ryun

2013-06-01

87

Amplification of plant beneficial microbial communities during conversion of coconut leaf substrate to vermicompost by Eudrilus sp.  

PubMed

The population densities of 15 microbial communities in the coconut leaves + cow manure mixture (10:1 ratio, w/w) and pure cow manure, gut contents of the earthworm, Eudrilus sp., reared on the above substrates and vermicompost produced by the worm were studied. The enumeration was done by dilution plate and most probable number method using several selective and semi-selective microbial media. In the vermicompost produced from coconut leaves + cow manure (CLV) mixture, 9 out of 15 microbial communities, particularly the plant beneficial ones, were amplified whereas five communities were amplified in case of pure cow manure (CMV). The CLV contained significantly high population of fungi, free-living nitrogen fixers, phosphate solubilizers, fluorescent pseudomonads, and silicate solubilizers. The CMV was preponderant with aerobic heterotrophic bacteria, actinomycetes, and Trichoderma spp. Spore formers were present in similar numbers in both the vermicomposts. Presence of Azotobacter was detected only in CMV. The results obtained in this study suggest coconut leaf litter to be a good alternative for cow manure for the production of vermicompost, especially in the areas where coconut is grown in plenty. PMID:19280258

Gopal, Murali; Gupta, Alka; Sunil, E; Thomas, George V

2009-07-01

88

Pig manure vermicompost as a component of a horticultural bedding plant medium: effects on physicochemical properties and plant growth  

Microsoft Academic Search

This experiment was designed to characterize the physical, chemical and microbial properties of a standard commercial horticultural, greenhouse container, bedding plant medium (Metro-Mix 360), that had been substituted with a range of increasing concentrations (0%, 5%, 10%, 25%, 50% and 100% by volume) of pig manure vermicompost and to relate these properties to plant growth responses. The growth trials used

R. M. Atiyeh; C. A. Edwards; S. Subler; J. D. Metzger

2001-01-01

89

Vermicomposting potentiality of Perionyx excavatus for recycling of waste biomass of java citronella - An aromatic oil yielding plant  

Microsoft Academic Search

Laboratory investigation on vermicomposting efficacy of Perionyx excavatus for recycling of distillation waste biomass of java citronella (Cymbopogon winterianus Jowitt) was carried out in two seasonal trials i.e. summer and winter periods. The experiment was conducted in earthen pots using a mixture of citronella waste material and cowdung in the proportion of 5:1. A control treatment without earthworms was setup

H. Deka; S. Deka; C. K. Baruah; J. Das; S. Hoque; H. Sarma; N. S. Sarma

2011-01-01

90

Attenuation of veterinary antibiotics in full-scale vermicomposting of swine manure via the housefly larvae (Musca domestica)  

NASA Astrophysics Data System (ADS)

Animal waste from concentrated swine farms is widely considered to be a source of environmental pollution, and the introduction of veterinary antibiotics in animal manure to ecosystems is rapidly becoming a major public health concern. A housefly larvae (Musca domestica) vermireactor has been increasingly adopted for swine manure value-added bioconversion and pollution control, but few studies have investigated its efficiency on antibiotic attenuation during manure vermicomposting. In this study we explored the capacity and related attenuation mechanisms of antibiotic degradation and its linkage with waste reduction by field sampling during a typical cycle (6 days) of full-scale larvae manure vermicomposting. Nine antibiotics were dramatically removed during the 6-day vermicomposting process, including tetracyclines, sulfonamides, and fluoroquinolones. Of these, oxytetracycline and ciprofloxacin exhibited the greater reduction rate of 23.8 and 32.9 mg m-2, respectively. Environmental temperature, pH, and total phosphorus were negatively linked to the level of residual antibiotics, while organic matter, total Kjeldahl nitrogen, microbial respiration intensity, and moisture exhibited a positive effect. Pyrosequencing data revealed that the dominant phyla related to Firmicutes, Bacteroidetes, and Proteobacteria accelerated manure biodegradation likely through enzyme catalytic reactions, which may enhance antibiotic attenuation during vermicomposting.

Zhang, Zhijian; Shen, Jianguo; Wang, Hang; Liu, Meng; Wu, Longhua; Ping, Fan; He, Qiang; Li, Hongyi; Zheng, Changfeng; Xu, Xinhua

2014-10-01

91

The influence of earthworms on nutrient dynamics during the process of vermicomposting.  

PubMed

In the present study the potential of the earthworm Eisenia andrei to modify chemical and microbiological properties, with a special focus on the nutrient content of fresh organic matter, was evaluated during 16 weeks of vermicomposting of cattle manure and sewage sludge. Samples were periodically collected in order to determine the changes in inorganic nitrogen (N), in total microbial biomass and activity, as well as in the total and available content of macro- and micronutrients. An optimal moisture level, ranging from 75% to 88%, was maintained throughout the process. The content of organic matter decreased over time, but no changes were found in this parameter as a result of earthworm activity. The carbon/N ratio rapidly decreased, but only in the manure, reflecting rapid decomposition and mineralisation of the organic matter by the earthworms. An increase in N mineralisation was also attributable to the presence of earthworms, although in the manure this effect was hardly detectable before the eighth week of vermicomposting. Earthworm activity also enhanced the total content of potassium, calcium and iron together with an increase in the availability of phosphorus and zinc. We did not detect a significant earthworm effect on microbial respiration, but their activity increased greatly microbial biomass nitrogen in sewage sludge. PMID:23831778

Domínguez, Jorge; Gómez-Brandón, María

2013-08-01

92

Earthworms as vectors of Escherichia coli O157:H7 in soil and vermicomposts.  

PubMed

Survival and movement of Escherichia coli O157:H7 in both soil and vermicompost is of concern with regards to human health. Whilst it is accepted that E. coli O157:H7 can persist for considerable periods in soils, it is not expected to survive thermophilic composting processes. However, the natural behavior of earthworms is increasingly utilized for composting (vermicomposting), and the extent to which earthworms promote the survival and dispersal of the bacterium within such systems is unknown. The faecal material produced by earthworms provides a ready supply of labile organic substrates to surrounding microbes within soil and compost, thus promoting microbial activity. Earthworms can also cause significant movement of organisms through the channels they form. Survival and dispersal of E. coli O157:H7 were monitored in contaminated soil and farmyard manure subjected to earthworm digestion over 21 days. Our findings lead to the conclusion that anecic earthworms such as Lumbricus terrestris may significantly aid vertical movement of E. coli O157 in soil, whereas epigeic earthworms such as Dendrobaena veneta significantly aid lateral movement within compost. Although the presence of earthworms in soil and compost may aid proliferation of E. coli O157 in early stages of contamination, long-term persistence of the pathogen appears to be unaffected. PMID:16958908

Williams, A Prysor; Roberts, Paula; Avery, Lisa M; Killham, Ken; Jones, David L

2006-10-01

93

Dissipation of polycyclic aromatic hydrocarbons from soil added with manure or vermicompost.  

PubMed

The dissipation of three PAHs, i.e., 500 mg phenanthrene kg(-1) soil, 350 mg anthracene kg(-1) soil and 150 mg benzo(a)pyrene kg(-1) soil, was investigated in soil from Acolman (México) added with cow manure or vermicompost while production of CO(2) and inorganic N was monitored. At day 0, recovery of added phenanthrene was 95%, anthracene 96% and benzo(a)pyrene 100% in sterilized soil and concentrations did not change significantly in sterilized soil over time. Application of organic material did not affect the concentration of phenanthrene and anthracene, which decreased sharply in the unsterilized soil in the first weeks of the incubation. Less than 3% of the added phenanthrene was detected after 100 days and less than 8.5% of the added anthracene (mean of the two experiments). The decrease in concentration of benzo(a)pyrene (BaP) was not fast as that of phenathrene and anthracene, and 22% was extractable from soil still after 100days. It was concluded that addition of farm yard manure (FYM) and vermicompost only had an effect on the initial dissipation of phenanthrene, anthracene and benzo(a)pyrene in soil of Acolman. PMID:16580045

Alvarez-Bernal, D; García-Díaz, E L; Contreras-Ramos, S M; Dendooven, L

2006-11-01

94

Vermicomposting of paper mill solid waste using epigeic earthworm Eudrilus eugeniae.  

PubMed

A 90 day study was conducted to evaluate the efficiency of an exotic earthworm species (Eudrilus eugeniae) for decomposition of different types of organic substrates (mixed liquor suspended solids, cow dung and leaf litter) into valuable vermicompost. Mixed liquor suspended solids (MLSS) and leaf litter (LL) were mixed with cow dung (CD) in eight different ratios with three replicates for each treatment. All vermibeds expressed a significant decrease in pH, organic carbon, C:N ratio and an increase in total nitrogen, phosphorus and potash. Overall, earthworms could maximize decomposition and mineralization efficiency in bedding with lower proportions of MLSS. Maximum value for earth worm zoo mass and higher concentration of nutrient content was observed in CD + MLSS + LL in 1:1:2 ratios. Earthworm mortality tended to increase with increasing proportion of MLSS and maximum mortality in E. eugeniae was recorded for MLSS treatment alone. Results indicate that vermicomposting might be useful for managing the energy and nutrient of MLSS on a low-input basis. Products of this process can be used for sustainable land restoration practices. PMID:25004743

Ponmani, S; Udayasoorian, C; Jayabalakrishnan, R M; Kumar, K Vinoth

2014-07-01

95

Potential of filter-vermicomposter for household wastewater pre-treatment and sludge sanitisation on site.  

PubMed

Septic tank systems have been widely used to separate and digest solid matter in the household wastewater for a long time. However, they contaminate groundwater with pathogens and nutrients and deprive agriculture of valuable nutrients and soil conditioner from human excreta. Compared with septic tank systems the filter-composter (Rottebehaelter), which usually consists of an underground monolithic concrete tank having two filter beds at its bottom or two filter bags that are hung side by side and used alternately at intervals of 6-12 months, is an efficient component for solid-liquid separation, pre-treatment and collection/storage of solid matter in household wastewater. The solids are retained and decompose in the filter bags or on the filter bed while the liquid filters through. However, because of the high moisture content of the retained solids decomposition is slow. Therefore, secondary treatment of the retained solids is required for sanitisation. The breakthrough was the combination of vermicomposting with the filter-composter system. Relatively dry and stable retained materials were obtained in the filter bags in about 3 months only. No secondary treatment is required as the human excreta will be converted to vermicastings, which are hygienically safe and can be reused as soil conditioner. Therefore, further development of the filter-composter with vermicomposting is worthwhile, especially the aspects of sanitisation of the faecal matter and its reuse as a soil conditioner. PMID:17506421

Gajurel, D; Deegener, S; Shalabi, M; Otterpohl, R

2007-01-01

96

ANÁLISE DA COMPETITIVIDADE DA FRUTICULTURA BRASILEIRA FRENTE A MUNDIAL  

Microsoft Academic Search

O presente estudo teve como objetivo analisar a competitividade da fruticultura brasileira frente aos maiores produtores das principais frutas que compõem nossa pauta de exportação: banana, citros (laranja, lima\\/limão e tangerina), maçã, mamão, manga, melão e uva – apresentadas em ordem alfabética. Juntas representaram em 2007 cerca de 93% da receita gerada com a exportação de frutas no País. Foi

Aline Vitti; Margarete Boteon

2008-01-01

97

Vermicomposting of sludges from paper mill and dairy industries with Eisenia andrei: A pilot-scale study  

Microsoft Academic Search

We studied vermicomposting with Eisenia andrei of sludges from a paper mill mixed with cattle manure in a six-month pilot-scale experiment. Initially, a small-scale laboratory experiment was carried out to determine the growth and reproduction rates of earthworms in the different substrates tested. In the pilot-scale experiment, the number of earthworms increased between 22- and 36-fold and total biomass increased

C. Elvira; L. Sampedro; E. Benítez; R. Nogales

1998-01-01

98

Dynamics of biological and chemical parameters during vermicomposting of solid textile mill sludge mixed with cow dung and agricultural residues.  

PubMed

In India, thousands of tons of textile mill sludge are produced every year. We studied the ability of epigeic earthworm Eisenia foetida to transform textile mill sludge mixed with cow dung and/or agricultural residues into value added product, i.e., vermicompost. The growth, maturation, mortality, cocoon production, hatching success and the number of hatchlings were monitored in a range of different feed mixtures for 11 weeks in the laboratory under controlled environmental conditions. The maximum growth and reproduction was obtained in 100% cow dung, but worms grew and reproduced favorably in 80% cow dung + 20% solid textile mill sludge and 70% cow dung + 30% solid textile mill sludge also. Addition of agricultural residues had adverse effects on growth and reproduction of worms. Vermicomposting resulted in significant reduction in C:N ratio and increase in TKN, TP, TK and TCa after 77 days of worm activity in all the feeds. Vermicomposting can be an alternate technology for the management of textile mill sludge if mixed with cow dung in appropriate quantities. PMID:15158514

Kaushik, Priya; Garg, V K

2004-09-01

99

Short-Term Effect of Vermicompost Application on Biological Properties of an Alkaline Soil with High Lime Content from Mediterranean Region of Turkey  

PubMed Central

This study was conducted to investigate direct short-term impact of vermicompost on some soil biological properties by monitoring changes after addition of vermicompost as compared to farmyard manure in an alkaline soil with high lime content from semiarid Mediterranean region of Turkey. For this purpose, mixtures of soil and organic fertilizers in different doses were incubated under greenhouse condition. Soil samples collected in regular intervals were analyzed for biological parameters including dehydrogenase, ?-glucosidase, urease, alkaline phosphatase activities, and total number of aerobic mesophilic bacteria. Even though soil dehydrogenase activity appeared to be dose-independent based on overall evaluation, organic amendments were found to elevate dehydrogenase activity when sampling periods are evaluated individually. ?-glucosidase, urease, alkaline phosphatase activity, and aerobic mesophilic bacterial numbers in vermicompost treatments fluctuated but remained significantly above the control. A slight but statistically significant difference was detected between organic amendments in terms of urease activity. Vermicompost appeared to more significantly increase bacterial number in soil. Clearly, vermicompost has a potential to be used as an alternative to farmyard manure to improve and maintain soil biological activity in alkaline calcareous soils from the Mediterranean region of Turkey. Further studies are needed to assess its full potential for these soils. PMID:25254238

Uz, Ilker; Tavali, Ismail Emrah

2014-01-01

100

Short-term effect of vermicompost application on biological properties of an alkaline soil with high lime content from Mediterranean region of Turkey.  

PubMed

This study was conducted to investigate direct short-term impact of vermicompost on some soil biological properties by monitoring changes after addition of vermicompost as compared to farmyard manure in an alkaline soil with high lime content from semiarid Mediterranean region of Turkey. For this purpose, mixtures of soil and organic fertilizers in different doses were incubated under greenhouse condition. Soil samples collected in regular intervals were analyzed for biological parameters including dehydrogenase, ?-glucosidase, urease, alkaline phosphatase activities, and total number of aerobic mesophilic bacteria. Even though soil dehydrogenase activity appeared to be dose-independent based on overall evaluation, organic amendments were found to elevate dehydrogenase activity when sampling periods are evaluated individually. ?-glucosidase, urease, alkaline phosphatase activity, and aerobic mesophilic bacterial numbers in vermicompost treatments fluctuated but remained significantly above the control. A slight but statistically significant difference was detected between organic amendments in terms of urease activity. Vermicompost appeared to more significantly increase bacterial number in soil. Clearly, vermicompost has a potential to be used as an alternative to farmyard manure to improve and maintain soil biological activity in alkaline calcareous soils from the Mediterranean region of Turkey. Further studies are needed to assess its full potential for these soils. PMID:25254238

Uz, Ilker; Tavali, Ismail Emrah

2014-01-01

101

Phosphate solubilizing ability of Emericella nidulans strain V1 isolated from vermicompost.  

PubMed

Phosphorus is one of the key factors that regulate soil fertility. Its deficiencies in soil are largely replenished by chemical fertilizers. The present study was aimed to isolate efficient phosphate solubilizing fungal strains from Eisenia fetida vermicompost. Out of total 30 fungal strains the most efficient phosphate solubilizing one was Emericella (Aspergillus) nidulans V1 (MTCC 11044), identified by custom sequencing of beta-tubulin gene and BLAST analysis. This strain solubilized 13 to 36% phosphate from four different rock phosphates. After three days of incubation of isolated culture with black Mussorie phosphate rock, the highest percentage of phosphate solubilization was 35.5 +/- 1.01 with a pH drop of 4.2 +/- 0.09. Kinetics of solubilization and acid production showed a linear relationship until day five of incubation. Interestingly, from zero to tenth day of incubation, solubility of soil phosphate increased gradually from 4.31 +/- 1.57 to 13.65 +/- 1.82 (mg kg(-1)) recording a maximum of 21.23 +/- 0.54 on day 45 in respect of the V1 isolate. Further, enhanced phosphorus uptake by Phaseolus plants with significant pod yield due to soil inoculation of Emericella nidulans V1 (MTCC 11044), demonstrated its prospect as an effective biofertilizer for plant growth. PMID:24266109

Bhattacharya, Satya Sunder; Barman, Soma; Ghosh, Ranjan; Duary, Raj Kumar; Goswami, Linee; Mandal, Narayan C

2013-10-01

102

Heavy metal and nutrient changes during vermicomposting animal manure spiked with mushroom residues.  

PubMed

A pilot-scale trial of four months was conducted to investigate the responses of heavy metal and nutrient to composting animal manure spiked with mushroom residues with and without earthworms. Results showed that earthworm activities accelerated organic matter mineralization (e.g. reduction in C/N ratio, increase in total concentrations of N, P, K) and humification (e.g. increase in humic acid concentration, humification ratio and humification index). Despite composting increased total heavy metal (i.e. As, Pb, Cu, Zn) concentrations irrespective of earthworm, the availability of heavy metals extracted by DTPA significantly (P<0.05) decreased particularly in treatments with earthworms introduced. The shift from available to unavailable fractions of heavy metals was either due to earthworm bioaccumulation, as indicated by total heavy metal concentrations being higher in earthworm tissues, or due to the formation of stable metal-humus complexes as indicated by the promotion of humification. Our results suggest that vermicomposting process could magnify the nutrient quality but relieve the heavy metals risk of agricultural organic wastes. PMID:25128918

Song, Xiuchao; Liu, Manqiang; Wu, Di; Qi, Lin; Ye, Chenglong; Jiao, Jiaguo; Hu, Feng

2014-11-01

103

Solid waste management of temple floral offerings by vermicomposting using Eisenia fetida  

SciTech Connect

Highlights: ? Effective management of temple floral offerings using E. fetida. ? Physico-chemical properties in TW VC were better especially EC, C/N, C/P and TK. ? TW VC as plant growth promoter at much lower application rates than KW and FYW VC. - Abstract: Recycling of temple waste (TW) mainly comprising of floral offerings was done through vermitechnology using Eisenia fetida and its impact on seed germination and plant growth parameters was studied by comparing with kitchen waste (KW) and farmyard waste (FYW) vermicompost (VC). The worm biomass was found to be maximum in TW VC compared to KW and FYW VCs at both 40 and 120 days old VCs. Physico-chemical analysis of worm-worked substrates showed better results in TW VC especially in terms of electrical conductivity, C/N, C/P and TK. 10% TW VC–water extract (VCE) showed stimulatory effect on germination percentage of chickpea seeds while KW and FYW VCE proved effective at higher concentration. Variation in growth parameters was also observed with change in the VC–soil ratio and TW VC showed enhanced shoot length, root length, number of secondary roots and total biomass at 12.5% VC compared to KW and FYW VC.

Singh, Akanksha, E-mail: bhuaks29@gmail.com [Department of Botany, Banaras Hindu University, Varanasi 221 005 (India); Jain, Akansha, E-mail: akansha007@rediffmail.com [Department of Botany, Banaras Hindu University, Varanasi 221 005 (India); Sarma, Birinchi K., E-mail: birinchi_ks@yahoo.com [Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005 (India); Abhilash, P.C., E-mail: pca.iesd@bhu.ac.in [Institute for Environment and Sustainable Development, Banaras Hindu University, Varanasi 221 005 (India); Singh, Harikesh B., E-mail: hbs1@rediffmail.com [Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005 (India)

2013-05-15

104

Evaluation of vermicompost as a raw natural adsorbent for adsorption of pesticide methylparathion.  

PubMed

The assessment of vermicompost (VC) as a low-cost and alternative adsorbent for the removal of the pesticide methylparathion (MP) from an aqueous medium has been investigated by batch and column experiments. Parameters related to MP adsorption, i.e. equilibrium time (61.5 min) and adsorption pH (6.8) were optimized by using Doehlert design. The initial and final MP concentrations after adsorption assays were determined by square-wave adsorptive cathodic stripping voltammetry using an electrode composed of a multiwalled carbon nanotube dispersed in mineral oil. Batch adsorption experimental data were fitted to the Langmuir and Freundlich isotherm adsorptions, and a very good fit to the Langmuir linear model, giving a maximum adsorption capacity (MAC) of 0.17 mg g(-1). This result was very similar to that obtained with the column experiments. In order to evaluate the MP desorption from column packed VC, 100.0 ml of nitric acid solution (pH 3.0) has been percolated through material. No leaching of MP was observed, thus confirming the strong interaction between MP and VC. The satisfactory MAC obtained and low cost makes the VC a reliable natural material for the removal of MP from aqueous effluents. PMID:22519100

Mendes, Camila Bitencourt; Lima, Giovana de Fátima; Alves, Vanessa Nunes; Coelho, Nívia Maria Melo; Dragunski, Douglas Cardoso; Tarley, César Ricardo Teixeira

2012-01-01

105

Organic matter transformations in lignocellulosic waste products composted or vermicomposted ( eisenia fetida andrei): Chemical analysis and 13C CPMAS NMR spectroscopy  

Microsoft Academic Search

Lignocellulosic wastes (of maple) were composted and vermicomposted for 10 months under controlled conditions. Chemical and 13C CPMAS NMR spectroscopic analyses were made to characterize the transformations of the organic matter. At first, the total organic matter and carbon mass underwent a relatively rapid decrease. There was a concomitant decomposition of polysaccharides including cellulose. The degradation of aromatic structures and

M. Vinceslas-Akpa; M. Loquet

1997-01-01

106

Vermicomposting of toxic weed--Lantana camara biomass: chemical and microbial properties changes and assessment of toxicity of end product using seed bioassay.  

PubMed

This work illustrates the results of vermicomposting trials of noxious weed - Lantana camara (LL) leaf litter spiked with cow dung (CD) in different ratios (0%, 20%, 40%, 60% and 80%) using Eisenia fetida. A total of five treatments were established and changes in chemical and microbial properties of vermibeds have been observed for 60 days. In all treatments, a decrease in pH (19.5-30.7%), total organic carbon (TOC) (12-23%) and C:N ratio (25-35%), but increase in ash content (16-40%), total N(N(tot)) (11-32%), available phosphorous (P(avail)) (445-629%), exchangeable potassium (K(exch)) (63-156%) exchangeable calcium (Ca(exch)) (67-94%),and N-NO3(-) (164-499%) was recorded. Vermibeds with 40-60% LL (T2 and T3) showed better mineralization rate. The number of fungi, bacteria and actinomycetes showed 0.33-1.67-fold, 0.72-2.33-fold and 2.03-2.99-fold increase, respectively after vermicomposting process. The germination index (GI) was between 47% and 83% in all vermicomposts as indicated by seed bioassay test. Results thus suggested that Lantana may be a potential source for vermicompost production for sustainable agriculture. PMID:23796668

Suthar, Surindra; Sharma, Priyanka

2013-09-01

107

Direct and Residual Effect of Vermicompost, Biofertilizers and Phosphorus on Soil Nutrient Dynamics and Productivity of Chickpea-Fodder Maize Sequence  

Microsoft Academic Search

Field experiments were carried out at the Indian Agricultural Research Institute, New Delhi, India. The principal findings revealed that application of 3t vermicompost\\/ha to chickpea improved dry matter accumulation, grain yield and grain protein content in chickpea, soil N and P and bacterial count, dry fodder yield of succeeding maize, total N and P uptake by the cropping system over

R. S. Jat; I. P. S. Ahlawat

2006-01-01

108

Evaluation of vermicompost as bioadsorbent substrate of Pb, Ni, V and Cr for waste waters remediation using Total Reflection X-ray Fluorescence  

NASA Astrophysics Data System (ADS)

The use of vermicompost as adsorbent substrate for removing Pb, Ni, V and Cr from waste waters is proposed. In this work, after a preliminary physical and chemical characterization of the vermicompost, the optimal parameters for the heavy metal adsorption were obtained. A synthetic multielemental solution of Pb, Cr and Ni and a solution of NH 4VO 3 for vanadium were evaluated. The optimized parameters were pH, vermicompost mass to volume ratio, agitation time and particle size of the adsorbent. A batch system was employed for the assays. The elements were determined in the supernatant solution after filtration of the substrate. An optimal pH of 4.5 was found for ion removal. The agitation time slightly influences the adsorption of Pb and Cr, but it has a high influence on the Ni and V adsorption. The highest adsorption and removal of the metals was observed for a vermicompost mass of 2 g per 500 mL using a particle size between 75 to 841 µm for Pb, Cr and Ni, and 841 till 1192 µm for V. The mean removal percentage for each element is around 95% for Pb. Ni and Cr in the multielemental synthetic sample, demonstrating a high removal capacity of the substrate. For V it was found a removal efficiency of 50%.

Urdaneta, Cynthia; Parra, Lué-Merú Marcó; Matute, Saida; Garaboto, Mayantino Angel; Barros, Hayden; Vázquez, Cristina

2008-12-01

109

Experimental co-digestion of corn stalk and vermicompost to improve biogas production  

SciTech Connect

Anaerobic co-digestion of corn stalk and vermicompost (VC) as well as mono-digestion of corn stalk were investigated. Batch mono-digestion experiments were performed at 35 {+-} 1 {sup o}C and initial total solid loading (TSL) ranged from 1.2% to 6.0%. Batch co-digestion experiments were performed at 35 {+-} 1 {sup o}C and initial TSL of 6% with VC proportions ranged from 20% to 80% of total solid (TS). For mono-digestion of corn stalk, a maximum methane yield of 217.60 {+-} 13.87 mL/g TS{sub added} was obtained at initial TSL of 4.8%, and acidification was found at initial TSL of 6.0% with the lowest pH value of 5.10 on day 4. Co-digestion improved the methane yields by 4.42-58.61% via enhancing volatile fatty acids (VFAs) concentration and pH value compared with mono-digestion of corn stalk. The maximum biogas yield of 410.30 {+-} 11.01 mL/g TS{sub added} and methane yield of 259.35 {+-} 13.85 mL/g TS{sub added} were obtained for 40% VC addition. Structure analysis by X-ray diffractometry (XRD) showed that the lowest crystallinity of 35.04 of digested corn stalk was obtained from co-digestion with 40% VC, which decreased 29.4% compared to 49.6 obtained from un-treated corn stalk. It is concluded that co-digestion with VC is beneficial for improving biodigestibility and methane yield from corn stalk.

Chen Guangyin [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093 (China); Zheng Zheng, E-mail: zzhenghj@fudan.edu.c [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093 (China); Department of Environmental Science and Engineering, Fudan University, Shanghai 200433 (China); Yang Shiguan [National Engineering Laboratory of Biomass Power Generation Equipment, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Fang Caixia; Zou Xingxing; Luo Yan [State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210093 (China)

2010-10-15

110

Organic amendment based on vermicompost and compost: differences on soil properties and maize yield.  

PubMed

The objective of the present study was to study the effect of two vermicomposts [animal (VCD) and vegetal origin (VGF)] and a cotton gin compost (C) at rates of 1780 and 3560?kg fresh organic matter?ha(-1) for 3 years on an Typic Xerofluvent located near Seville (Spain) on soil biological properties, nutrition (leaf N, P and K concentration, pigments and soluble carbohydrate concentrations) and yield parameters of maize (Zea mays cv. Tundra) crop. All organic waste materials had a positive effect on the soil biological properties, plant nutrition and crop yield parameters, although at the end of the experimental period and at the high organic matter rate, the soil microbial biomass and dehydrogenase, urease, ?-glucosidase, phosphatase and arylsulfatase activities increased more significantly in the VCD-amended soils (86.4, 85.8, 94.5, 99.3, 70.1 and 63.8%, respectively) respect to the control soil, followed by VGF-amended soils (84.8, 80.6, 92.7, 99.1, 68.3 and 61.6%, respectively) and CC-amended soils (80.5, 75.9, 89.7, 99, 65.7 and 59.9%, respectively). Leaf N, P and K contents and pigments and soluble carbohydrate contents were highest in VCD-amended soils, followed by VGF and CC treatments. Compared with the control soil, the application of VCD in soils at high doses increased the crop yield parameters, followed by VGF and CC treatments. This may have been due to a greater labile fraction of organic matter in the VCD than the VGF and CC, respectively. PMID:20921058

Tejada, Manuel; Benítez, Concepción

2011-11-01

111

Vermicomposting of Tea Factory Coal Ash: metal accumulation and metallothionein response in Eisenia fetida (Savigny) and Lampito mauritii (Kinberg).  

PubMed

Earthworms can accumulate heavy metals in their intestines to a great extent. Impact of feed materials and duration of metal exposure on natural activity of earthworms are rather unclear; this investigation therefore addresses the impact of metal rich Tea Factory Coal Ash (TFCA) on reproduction, composting and metal accumulation ability of Eisenia fetida and Lampito mauritii. Earthworm count and cocoon production increased significantly during vermicomposting. pH of the vermicomposted mixtures shifted toward neutrality, total organic C decreased substantially and total N enhanced significantly compared to composting. High heavy metal (Mn, Zn, Cu, As) accumulation was recorded in the intestine of both the earthworm species. Moreover, gradual increase in the metal-inducible metallothionein concentration indicated the causal mechanism of metal accumulation in these species. TFCA+cow dung (CD) (1:1) were most favorable feed mixture for E. fetida and TFCA+CD (1:2) were good for L. mauritii in regard to metal accumulation and compost quality. PMID:24907568

Goswami, L; Sarkar, S; Mukherjee, S; Das, S; Barman, S; Raul, P; Bhattacharyya, P; Mandal, N C; Bhattacharya, S; Bhattacharya, S S

2014-08-01

112

Bioremediation of distillery sludge into soil-enriching material through vermicomposting with the help of Eisenia fetida.  

PubMed

The aim of the present study was bioremediation of distillery sludge into a soil-enriching material. It was mixed with a complementary waste, cattle dung, and subjected to vermicomposting with (V) and without (T, control) Eisenia fetida in the ratio of 0:100 % (V1, T1), 10:90 (V2, T2), 25:75 (V3, T3), 50:50 (V4, T4), 75:25 (V5, T5) and 100:0 % (V6, T6), respectively. Survival rate, growth rate, onset of maturity, cocoon production and population build-up increased with increasing ratio of cattle dung. Maximum mortality of earthworm was observed in V6 mixture. On the basis of response surface design, the concentration of sludge giving highest number of worms, cocoons and hatchlings came out to be 21.11, 24.51 and 17.19 %, respectively. Nitrogen, phosphorus, sodium and pH increased during vermicomposting but decreased in the products without earthworm and there was increase in the contents of transition metals in the products of both the techniques. However, organic carbon, electrical conductivity and potassium showed an opposite trend. PMID:25113550

Singh, Jaswinder; Kaur, Arvinder; Vig, Adarsh Pal

2014-10-01

113

Biodegradation of 3,4 dichloroaniline by fungal isolated from the preconditioning phase of winery wastes subjected to vermicomposting.  

PubMed

A hazardous contaminant, 3,4-dichloroaniline (DCA) is widespread in the environment due to its extensive use in the manufacture of chemicals and its application in different sectors. The ability of fungi grow on in winery wastes in the preconditioning period of vermicomposting to degrade DCA was investigated. Three filamentous fungi (F1, F2, and F3) were isolated and one identified as Aspergillus niger and two as Fusarium sp. strains. The culture media with the fungus alone or in consortium (Fmix) with DCA as the nitrogen source were analyzed by solid-phase microextraction and gas chromatography-mass spectrometry (SPME-GC/MS). The fastest degradation rate was measured in Fmix with a DT50 of 0.85day(-1). Fusarium sp. and A. niger differed in the metabolism of DCA. Five metabolites were identified as a result of oxidation, co-denitrification, N-acetylation, and polymerization reactions. The major metabolites were 3,4-dichloroacetanilide and dichloroquinolines. The azo-metabolites tetrachloroazobenzene and tetracloroazoxybenzene and 3,4-dichloronitrobenzene were found in minor amounts but appeared to be the most persistent in the Fusarium cultures (half-lives ranging from 8.3 to 30.9 days). This study highlights the metabolic potential of microorganisms in the preconditioning period of the vermicomposting process and its possible application for in situ bioremediation strategies. PMID:24440653

Castillo, Jean Manuel; Nogales, Rogelio; Romero, Esperanza

2014-02-28

114

Treatment and biotransformation of highly polluted agro-industrial wastewater from a palm oil mill into vermicompost using earthworms.  

PubMed

In this laboratory-scale study, earthworms were introduced as biodegraders of palm oil mill effluent (POME), which is a wastewater produced from the wet process of palm oil milling. POME was absorbed into amendments (soil or rice straw) in different ratios as feedstocks for the earthworm, Eudrilus eugeniae. The presence of earthworms led to significant increases in pH, electrical conductivity, and nutrient content but decreases in the C/N ratio (0.687-75.8%), soluble chemical oxygen demand (19.7-87.9%), and volatile solids (0.687-52.7%). However, earthworm growth was reduced in all treatments by the end of the treatment process. Rice straw was a better amendment/absorbent relative to soil, with a higher nutrient content and greater reduction in soluble chemical oxygen demand with a lower C/N ratio in the vermicompost. Among all treatments investigated, the treatment with 1 part rice straw and 3 parts POME (w/v) (RS1:3) produced the best quality vermicompost with high nutritional status. PMID:24372356

Lim, Su Lin; Wu, Ta Yeong; Clarke, Charles

2014-01-22

115

Gasto público en educación frente al comportamiento de los principales agregados económicos en Latinoamérica  

Microsoft Academic Search

La educación es una de las principales herramientas utilizadas por los gobiernos para lograr el crecimiento y desarrollo de un país. En consecuencia, las inversiones que se hagan en este rubro impactan, positivamente, de alguna manera, el comportamiento de variables económicas tales como el Producto Interno Bruto y la tasa de desempleo. Desafortunadamente, este escenario no siempre resulta ser así

Fabio Enrique Gómez Meneses; María Alexandra Zárate Camelo

2011-01-01

116

La ecología y el desarrollo sostenible frente al capitalismo: una contradicción insuperable  

Microsoft Academic Search

Resumen El progresivo deterioro ambiental y la creciente destrucción de los recursos naturales a escala planetaria constituyen una clara evidencia de lo que es capaz de generar un modelo basado exclusivamente en el crecimiento económico y la obtención de beneficios inmediatos, pero también son un signo elocuente de los propios límites que presenta el capitalismo, pues este modo de producción

José Antonio Segrelles

117

Cómo hacer frente al cáncer: cuidados médicos de apoyo y cuidados paliativos  

Cancer.gov

Formas de controlar los efectos físicos y psicológicos del cáncer y del tratamiento en los pacientes y sus familias, así como los efectos en la calidad de vida. También se incluye información sobre servicios de salud, ayuda económica y seguro médico.

118

Efficacy of vermicompost as fish pond manure--effect on water quality and growth of Cyprinus carpio (Linn.).  

PubMed

Experiment was conducted in (0.002 ha) cemented tanks for 120 days to assess the efficacy of vermicompost as fish pond manure at a dose of 10,000 kg/ha/year (VC(10)), 15,000 kg/ha/year (VC(15)) and 20,000 (VC(20)) kg/ha/year) in comparison to semi-digested cow dung (8-10 days old), which was utilized at a dose of 20,000 kg/ha/year (CD(20)). One fourth of the doze was applied 15 days prior to fish stocking and rest in equal weekly installments. Twenty fingerlings of common carp, Cyprinus carpio (Linn.) were stocked (10,000/ha) and fed with supplementary diet @ 2% of their body weight daily. Water quality parameters were found to be within the optimum limits for carp culture in all the treatments. Zooplankton production in all the treatments did not differ significantly. Fish growth in terms of weight gain, percent weight gain, specific growth rate and yield was maximum in VC(15) followed by VC(20), VC(10) and CD(20). PMID:20338752

Kaur, Vaneet Inder; Ansal, Meera D

2010-08-01

119

CH{sub 4} and N{sub 2}O from mechanically turned windrow and vermicomposting systems following in-vessel pre-treatment  

SciTech Connect

Methane (CH{sub 4}) and nitrous oxide (N{sub 2}O) are included in the six greenhouse gases listed in the Kyoto protocol that require emission reduction. To meet reduced emission targets, governments need to first quantify their contribution to global warming. Composting has been identified as an important source of CH{sub 4} and N{sub 2}O. With increasing divergence of biodegradable waste from landfill into the composting sector, it is important to quantify emissions of CH{sub 4} and N{sub 2}O from all forms of composting and from all stages. This study focuses on the final phase of a two stage composting process and compares the generation and emission of CH{sub 4} and N{sub 2}O associated with two differing composting methods: mechanically turned windrow and vermicomposting. The first stage was in-vessel pre-treatment. Source-segregated household waste was first pre-composted for seven days using an in-vessel system. The second stage of composting involved forming half of the pre-composted material into a windrow and applying half to vermicomposting beds. The duration of this stage was 85 days and CH{sub 4} and N{sub 2}O emissions were monitored throughout for both systems. Waste samples were regularly subjected to respirometry analysis and both processes were found to be equally effective at stabilising the organic matter content. The mechanically turned windrow system was characterised by emissions of CH{sub 4} and to a much lesser extent N{sub 2}O. However, the vermicomposting system emitted significant fluxes of N{sub 2}O and only trace amounts of CH{sub 4}. In-vessel pre-treatment removed considerable amounts of available C and N prior to the second stage of composting. This had the effect of reducing emissions of CH{sub 4} and N{sub 2}O from the second stage compared to emissions from fresh waste found in other studies. The characteristics of each of the two composting processes are discussed in detail. Very different mechanisms for emission of CH{sub 4} and N{sub 2}O are proposed for each system. For the windrow system, development of anaerobic zones were thought to be responsible for CH{sub 4} release. High N{sub 2}O emission rates from vermicomposting were ascribed to strongly nitrifying conditions in the processing beds combined with the presence of de-nitrifying bacteria within the worm gut.

Hobson, A.M. [Department of Earth Sciences, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom)]. E-mail: a.m.hobson@open.ac.uk; Frederickson, J. [Integrated Waste Systems, Faculty of Technology, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom); Dise, N.B. [Department of Earth Sciences, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom); Integrated Waste Systems, Faculty of Technology, Open University, Walton Hall, Milton Keynes MK7 6AA (United Kingdom)

2005-07-01

120

Evaluation of Streptomyces strains isolated from herbal vermicompost for their plant growth-promotion traits in rice.  

PubMed

Six actinomycetes, CAI-13, CAI-85, CAI-93, CAI-140, CAI-155 and KAI-180, isolated from six different herbal vermi-composts were characterized for in vitro plant growth-promoting (PGP) properties and further evaluated in the field for PGP activity in rice. Of the six actinomycetes, CAI-13, CAI-85, CAI-93, CAI-140 and CAI-155 produced siderophores; CAI-13, CAI-93, CAI-155 and KAI-180 produced chitinase; CAI-13, CAI-140, CAI-155 and KAI-180 produced lipase; CAI-13, CAI-93, CAI-155 and KAI-180 produced protease; and CAI-13, CAI-85, CAI-140 and CAI-155 produced ß-1-3-glucanase whereas all the six actinomycetes produced cellulase, hydrocyanic acid and indole acetic acid (IAA). The actinomycetes were able to grow in NaCl concentrations of up to 8%, at pH values between 7 and 11, temperatures between 20 and 40 °C and compatible with fungicide bavistin at field application levels. In the rice field, the actinomycetes significantly enhanced tiller numbers, panicle numbers, filled grain numbers and weight, stover yield, grain yield, total dry matter, root length, volume and dry weight over the un-inoculated control. In the rhizosphere, the actinomycetes also significantly enhanced total nitrogen, available phosphorous, % organic carbon, microbial biomass carbon and nitrogen and dehydrogenase activity over the un-inoculated control. Sequences of 16S rDNA gene of the actinomycetes matched with different Streptomyces species in BLAST analysis. Of the six actinomycetes, CAI-85 and CAI-93 were found superior over other actinomycetes in terms of PGP properties, root development and crop productivity. qRT-PCR analysis on selected plant growth promoting genes of actinomycetes revealed the up-regulation of IAA genes only in CAI-85 and CAI-93. PMID:24113511

Gopalakrishnan, Subramaniam; Vadlamudi, Srinivas; Bandikinda, Prakash; Sathya, Arumugam; Vijayabharathi, Rajendran; Rupela, Om; Kudapa, Himabindu; Katta, Krishnamohan; Varshney, Rajeev Kumar

2014-01-20

121

ALS Association  

MedlinePLUS

... Media For Healthcare Professionals The Leader in Global ALS Research The ALS Association has committed $99 million ... Read More » A Commitment to those Living with ALS Top Charity Watchdogs Rate The ALS Association with ...

122

Vermicomposting toilets, an alternative to latrine style microbial composting toilets, prove far superior in mass reduction, pathogen destruction, compost quality, and operational cost.  

PubMed

Composting toilets aim to recycle excrement into safe, stable humus. Preceding this, low costs, low risks, and mass reduction should be ensured. Source separating vermicomposting toilets (SSVCs) outperformed mixed latrine microbial composting toilets (MLMCs) in all categories. MLMCs: incurred ten times greater operational costs; created 10x more operator exposure; employed no proven pathogen reduction mechanism since solid end-products averaged 71,000±230,000CFU/g (fecal-origin) Escherichia coli and 24±5% total solids, consistently failed NSF/ANSI Standard 41; failed to reduce volatile solids compared to raw fecal matter; increased total contaminated dry mass by 274%, and produced alkaline end-product (8.0±0.7) high in toxic free ammonia (Solvita® 2.6±1.5). SSVCs have low maintenance costs and risks; adequate worm density for pathogen destruction (0.03±0.04g-worm/g-material); reduced E. coli 200±244CFU/g in neutral (7.4±0.3), stable (60±10% volatile solids), and mature (4±0 Solvita® NH(3)) end-product. PMID:22658870

Hill, Geoffrey B; Baldwin, Susan A

2012-10-01

123

Diagnosing ALS  

MedlinePLUS

... About ALS Share Print Diagnosing ALS En español ALS is a very difficult disease to diagnose. To date, there is no one ... series of diagnostic tests, often ruling out other diseases that mimic ALS, that a diagnosis can be established. A comprehensive ...

124

Al Composites  

NASA Astrophysics Data System (ADS)

In the present study, cold spraying technique was used to fabricate a metal matrix composite (MMC) that consists of Ni matrix and 20 vol.% Ni3Al particles at two different particle sizes as reinforcement. This study intends to investigate the effect of reinforcement particle size on microstructural and mechanical properties of cold sprayed MMCs. Two different Ni3Al powders with nominal particle size of -45 to +5 and +45 to 100 ?m were used as reinforcement in this study. Cold sprayed Ni-Ni3Al samples were subjected to the microstructural observation and characterization prior to any mechanical testing. Then, samples were tested using nano-indentation, Knoop hardness, Vickers hardness, and Resonance frequency to evaluate their mechanical properties. No significant changes were observed in microstructural characteristics due to different particle sizes. The results obtained from a variety of mechanical testings indicated that the increasing reinforcement particle size resulted in the slight reduction of mechanical properties such as elastic modulus and hardness in cold sprayed MMCs. The mechanical interlock between deposited particles defines the bonding strength in cold sprayed samples. Small size particles have a higher velocity and impact resulting in stronger interlock between deformed particles.

Chandanayaka, Tharaka; Azarmi, Fardad

2014-05-01

125

AL Amyloidosis  

PubMed Central

Definition of the disease AL amyloidosis results from extra-cellular deposition of fibril-forming monoclonal immunoglobulin (Ig) light chains (LC) (most commonly of lambda isotype) usually secreted by a small plasma cell clone. Most patients have evidence of isolated monoclonal gammopathy or smoldering myeloma, and the occurrence of AL amyloidosis in patients with symptomatic multiple myeloma or other B-cell lymphoproliferative disorders is unusual. The key event in the development of AL amyloidosis is the change in the secondary or tertiary structure of an abnormal monoclonal LC, which results in instable conformation. This conformational change is responsible for abnormal folding of the LC, rich in ? leaves, which assemble into monomers that stack together to form amyloid fibrils. Epidemiology AL amyloidosis is the most common type of systemic amyloidois in developed countries with an estimated incidence of 9 cases/million inhabitant/year. The average age of diagnosed patients is 65 years and less than 10% of patients are under 50. Clinical description The clinical presentation is protean, because of the wide number of tissues or organs that may be affected. The most common presenting symptoms are asthenia and dyspnoea, which are poorly specific and may account for delayed diagnosis. Renal manifestations are the most frequent, affecting two thirds of patients at presentation. They are characterized by heavy proteinuria, with nephrotic syndrome and impaired renal function in half of the patients. Heart involvement, which is present at diagnosis in more than 50% of patients, leading to restrictive cardiopathy, is the most serious complication and engages prognosis. Diagnostic methods The diagnosis relies on pathological examination of an involved site showing Congo red-positive amyloid deposits, with typical apple-green birefringence under polarized light, that stain positive with an anti-LC antibody by immunohistochemistry and/or immunofluorescence. Due to the systemic nature of the disease, non-invasive biopsies such as abdominal fat aspiration should be considered before taking biopsies from involved organs, in order to reduce the risk of bleeding complications. Differential diagnosis Systemic AL amyloidosis should be distinguished from other diseases related to deposition of monoclonal LC, and from other forms of systemic amyloidosis. When pathological studies have failed to identify the nature of amyloid deposits, genetic studies should be performed to diagnose hereditary amyloidosis. Management Treatment of AL amyloidosis is based on chemotherapy, aimed at controlling the underlying plasma clone that produces amyloidogenic LC. The hematological response should be carefully checked by serial measurements of serum free LC. The association of an alkylating agent with high-dose dexamethasone has proven to be effective in two thirds of patients and is considered as the current reference treatment. New agents used in the treatment of multiple myeloma are under investigation and appear to increase hematological response rates. Symptomatic measures and supportive care is necessary in patients with organ failure. Noticeably, usual treatments for cardiac failure (i.e. calcium inhibitors, ?-blockers, angiotensin converting enzyme inhibitors) are inefficient or even dangerous in patients with amyloid heart disease, that should be managed using diuretics. Amiodarone and pace maker implantation should be considered in patients with rhythm or conduction abnormalities. In selected cases, heart and kidney transplantation may be associated with prolonged patient and graft survival. Prognosis Survival in AL amyloidosis depends on the spectrum of organ involvement (amyloid heart disease being the main prognosis factor), the severity of individual organs involved and haematological response to treatment. PMID:22909024

2012-01-01

126

[AL amyloidosis].  

PubMed

AL amyloidosis belongs to the group of conformational diseases. It is the most common type of amyloidosis with an estimated 500 new cases per year in France. It is due to a small and usually indolent plasma cell clone which synthesizes an unstable, misfolded monoclonal immunoglobulin light chain that is prone to aggregate and form amyloid fibrils. Non-invasive biopsy such as abdominal fat aspiration or minor salivary gland biopsy should be performed to confirm the diagnosis and if negative, involved tissues have to be examined. Clinical presentation is very diverse, as AL amyloidosis can affect almost any organ or tissue in the body, other than the brain. The kidney is the most frequent organ involved, whereas heart disease characterized by restrictive cardiomyopathy is the most severe. Early diagnosis, before advanced cardiomyopathy, is essential for improving outcome. The association of alkylating agent and high-dose dexamethasone is effective in almost two-thirds of patients. Combinations of proteasome inhibitors, dexamethasone, and alkylating agents achieve high response rates. Close monitoring of clonal and organ response is mandatory to guide therapy changes and duration. New treatments designed to eliminate amyloid deposits are under development. PMID:25194219

Jaccard, A; Desport, E; Mohty, D; Bridoux, F

2015-02-01

127

Amyotrophic Lateral Sclerosis (ALS)  

MedlinePLUS

... Workshop: Executive Summary MicroRNA Triggers Protective Response in Mice with ALS New study shows that a molecule ... protective response to repair nerve-muscle connections in mice with ALS. Therapy Investigated for ALS May Find ...

128

Schwartz et al., Tella et al., Foltin et al., Trippenbach et al., Regalado et al., Magnano et al., Levin et al., Hale et al., Cocaine day  

E-print Network

., Levin et al., Hale et al., Cocaine day 7 day dry-out period Session I: Baseline Session II: Fixed 8mg, and 32 mg\\70kg respectively with a 100kg cap. All cocaine self-administration sessions take place at the Yale Center for Clinical Investigations Hospital Research Unit. Detecting Signatures of Cocaine Using

Massachusetts at Amherst, University of

129

MDA ALS Caregiver's Guide  

MedlinePLUS

... emotional strategies for being an effective caregiver. The MDA ALS Caregiver’s Guide is meant to give guidance, ... strength and finding help. It frequently refers to MDA’s Everyday Life with ALS: A Practical Guide . Everyone ...

130

Mitochondrial pathobiology in ALS  

PubMed Central

Amyotrophic lateral sclerosis (ALS) is the third most common human adult-onset neurodegenerative disease. Some forms of ALS are inherited, and disease-causing genes have been identified. Nevertheless, the mechanisms of neurodegeneration in ALS are unresolved. Genetic, biochemical, and morphological analyses of human ALS as well as cell and animal models of ALS reveal that mitochondria could have roles in this neurodegeneration. The varied functions and properties of mitochondria might render subsets of selectively vulnerable neurons intrinsically susceptible to cellular aging and stress and overlying genetic variations. Changes occur in mitochondrial respiratory chain enzymes and mitochondrial programmed cell death proteins in ALS. Transgenic mouse models of ALS reveal possible principles governing the biology of neurodegeneration that implicate mitochondria and the mitochondrial permeability transition pore. This paper reviews how mitochondrial pathobiology might contribute to the mechanisms of neurodegeneration in ALS. PMID:22083126

2014-01-01

131

Initial Symptoms of ALS  

MedlinePLUS

... in order to survive. Since ALS attacks only motor neurons, the sense of sight, touch, hearing, taste and smell are not ... The ALS Association - 1275 K Street NW - Suite 250 - Washington, DC 20005 All content and works posted on this ...

132

About ALS: FAQ  

MedlinePLUS

... a patient with ALS, is important to consider seeing a sub specialist - a neurologist specializing in neuromuscular ... questions in advance. Since you will likely be seeing an ALS expert, take advantage of the opportunity ...

133

Who Gets ALS?  

MedlinePLUS

... of ALS is more equal between men and women. There are several research studies – past and present – investigating possible risk factors that may be associated with ALS. More work is needed to conclusively determine what genetics and/or environment factors contribute to developing ALS. It is known, ...

134

What Is ALS?  

MedlinePLUS

... prolong survival. It is important to remember that ALS is a quite variable disease; no two people will have the same journey or experiences. There are medically documented cases of people in whom ALS ‘burns out,’ stops progressing or progresses at a ...

135

ANALYSE DES PHOTOCOURANTS DANS LES STRUCTURES Al-Al2O3-Al  

E-print Network

773 ANALYSE DES PHOTOCOURANTS DANS LES STRUCTURES Al-Al2O3-Al PR�PAR�ES PAR BOMBARDEMENT travail a consisté à étudier et analyser les photocourants dans les structures Al-Al2O3-Al dans lesquelles stoechiométriques et amorphes. La hauteur de barrière de l'interface Al-Al2O3 déterminée par photoémission interne

Paris-Sud XI, Université de

136

[Environmental factors in ALS].  

PubMed

ALS is likely to be a disorder of multifactorial origin. Among all the factors that may increase the risk of ALS, environmental ones are being studied for many years, but in the recent years, several advances have pointed to a new interest in their potential involvement in the disease process, especially for the cyanotoxin BMAA. Food containing BMAA has been found on Guam, a well-known focus of ALS/parkinsonism/dementia and high levels of BMAA have been identified into the brain of these patients. The BMAA cyanotoxin is potentially ubiquitous and have also been found into the food of patients who died from ALS both in Europe and USA. BMAA can be wrongly integrated into the protein structure during mRNA traduction, competing with serine. This may induce abnormal protein folding and a subsequent cell death. Heavy metals, such as lead or mercury may be directly toxic for neuronal cells. Several works have suggested an increased risk of ALS in individuals chronically exposed to these metals. Exposure to pesticides has been suggested to be linked to an increased risk of developing ALS. The mechanism of their toxicity is likely to be mediated by paraoxonases. These proteins are in charge of detoxifying the organism from toxins, and particularly organophosphates. To date, there are insufficient scientific data to suggest that exposure to electromagnetic fields may increase the risk of having ALS. We are particularly missing longitudinal cohorts to demonstrate that risk. PMID:24703731

Juntas-Morales, Raul; Pageot, Nicolas; Corcia, Philippe; Camu, William

2014-05-01

137

ALS (Amyotrophic Lateral Sclerosis)  

MedlinePLUS

... of other conditions. One of these tests is electromyography (EMG), a special recording technique that detects electrical activity in muscles. Certain EMG findings can support the diagnosis of ALS. Another ...

138

Genetic Testing for ALS  

MedlinePLUS

... a person will develop symptoms of ALS. Genetic Counseling If there is more than one person with ... testing based on your concerns and values. Genetic counseling does not always lead to genetic testing. For ...

139

Leakage current behaviors of Al/ZrO2/Al and Al/YSZ/Al devices  

NASA Astrophysics Data System (ADS)

The leakage current behaviors of Al/ZrO2/Al and Al/yttria stabilized zirconia (YSZ)/Al devices are investigated for resistive random access memory (RRAM) applications. A silicon oxide layer (450 nm) is first formed on a Si wafer by thermal oxidation. Onto it an Al bottom electrode (270 nm), a ZrO2 or YSZ nano-film (75 nm), and an Al top electrode (270 nm) are sequentially deposited by sputtering. These RRAM devices exhibit ohmic behaviors in the low-field region, while Schottky and Poole–Frenkel emissions take over in the high-field regions. Both the Schottky and trap barrier levels are decreased when monoclinic ZrO2 is replaced by cubic YSZ in the metal/oxide/metal structure. This is attributed not only to the higher symmetry crystal structure and lower binding energy of YSZ, but also to the formation of more oxygen vacancies and their re-distribution associated with yttria doping.

Yeh, Tsung-Her; Lin, Ruei-De; Cherng, Bo-Ruei; Cherng, Jyh-Shiarn

2015-01-01

140

ALS superbend magnet performance  

SciTech Connect

The Lawrence Berkeley National Laboratory has been engaged in the design, construction and testing of four superconducting dipoles (Superbends) that are installed in three arcs of the Advanced Light Source (ALS), with the fourth magnet as a spare. This represents a major upgrade to the ALS providing an enhanced flux and brightness at photon energies above 10 keV. In preparation for installation, an extensive set of tests and measurements have been conducted to characterize the magnetic and cryogenic performance of the Superbends and to fiducialize them for accurate placement in the ALS storage ring. The magnets are currently installed, and the storage ring is undergoing final commissioning. This paper will present the results of magnetic and cryogenic testing.

Marks, Steve; Zbasnik, John; Byrne, Warren; Calais, Dennis; Chin, Michael; DeMarco, Richard; Fahmie, Michael; Geyer, Alan; Krupnick, Jim; Ottens, Fred; Paterson, James A.; Pipersky, Paul; Robin, David S.; Schlueter, RossD.; Steier, Christoph; Wandesforde, Alan

2001-12-10

141

Al Qaeda Training Manual  

NSDL National Science Digital Library

The first resource is a US Department of Justice release of portions of an English translation of the Al Qaeda training manual located by police in Manchester, England during a search of an Al Qaeda member's home. The manual was found in a computer file described as "the military series" related to the "Declaration of Jihad." The cover and excerpts from the 12 chapters can be viewed as a .pdf file. Content of the text includes religious commentary, organizational tactics, guidelines for member selection, techniques for spying, and security measures. The DOJ does not provide the entire document because it does not want to encourage terrorism.

2001-01-01

142

ALS superbend magnet system  

SciTech Connect

The Lawrence Berkeley National Laboratory is preparing to upgrade the Advanced Light Source (ALS) with three superconducting dipoles (Superbends). In this paper we present the final magnet system design which incorporates R&D test results and addresses the ALS operational concerns of alignment, availability, and economy. The design incorporates conduction-cooled Nb-Ti windings and HTS current leads, epoxy-glass suspension straps, and a Gifford-McMahon cryocooler to supply steady state refrigeration. We also present the current status of fabrication and testing.

Zbasnik, J.; Wang, S.T.; Chen, J.Y.; DeVries, G.J.; DeMarco, R.; Fahmie, M.; Geyer, A.; Green, M.A.; Harkins, J.; Henderson, T.; Hinkson, J.; Hoyer, E.H.; Krupnick, J.; Marks, S.; Ottens, F.; Paterson, J.A.; Pipersky, P.; Portmann, G.; Robin, D.A.; Schlueter, R.D.; Steier, C.; Taylor, C.E.; Wahrer, R.

2000-09-15

143

Al Shanker Remembers.  

ERIC Educational Resources Information Center

In a 1996 interview shortly before his death, Al Shanker, longtime president of the American Federation of Teachers, discussed such topics as: his own educational experiences; how he learned about political fighting in the Boy Scouts; the appeal of socialism; multinational corporations and the nation state; teaching tough students; and John Dewey…

American Educator, 2000

2000-01-01

144

Lou Gehrig's Disease (ALS)  

MedlinePLUS

... ALS. The official name comes from these Greek words: "a" for without "myo" for muscle "trophic" for nourishment "lateral" for side (of the spinal cord) "sclerosis" for hardening or scarring So, amyotrophic means that the muscles have lost their nourishment. When this happens, they become smaller ...

145

Smith et al Supporting Information  

E-print Network

Smith et al 1 Supporting Information for Smith et al. 2006, PLoS Computational Biology 2:e161-hyperpallium apicale; HF-hippocampal formation, and M-mesopallium. #12;Smith et al 2 FigureS2,nolinkswerefoundbetweenelectrodesindifferentbirds,andnolinkswerefoundintothesoundstimulusvariable. CombinedAnalysisofAllBirds'ElectrodesPlusSound #12;Smith et al 3 Analysis of Data from Subsections

Jarvis, Erich D.

146

Al Parker: American Illustrator  

NSDL National Science Digital Library

This tribute to Al Parker, the noted magazine illustrator and artist, was fashioned from extensive holdings at the Washington University Library in St. Louis. Known as "The Dean of Illustrators," Al Parker attended school at the St. Louis School of Fine Arts at Washington University and went on to become of the most prolific and important American illustrators of the twentieth century. Parker was best-known for his modernist deployment of line, patterning, and bold, flat colors, which helped shape the general "look" of the period from the 1930s to the 1960s. Using short clips of Parker's original illustrations and drawings, this exhibit offers a glimpse into his work and contributions to the medium. Of particular interest is the section devoted to Parker's famous "Mother-Daughter" covers for the Ladies Home Journal, which began in 1939 and ran for 17 years.

147

Iniciacin al Windsurf DESCRIPCIN  

E-print Network

oportunidad a la comunidad universitaria al acercamiento a los deportes náuticos, siendo entre ellos de.): · Origen y fundamentos básicos del deporte del windsurf · Partes de las que se compone el material náutico de seguridad y de actuación a tener en cuenta para la práctica de este deporte · Nudos náuticos

Escolano, Francisco

148

Abu Musab Al Suri: Architect of the New Al Qaeda  

Microsoft Academic Search

Drawing on new sources, the authors argue that Abu Musab al Suri (real name Mustafa Setmariam Nasar), now in U.S. custody, is the principle architect of Al Qaeda's post–9\\/11 structure and strategy. His vision, which predated 9\\/11, of transforming Al Qaeda from a vulnerable hierarchical organization into a resilient decentralized movement, was largely the formula Al Qaeda adopted after the

Paul Cruickshank; Mohannad Hage Ali

2007-01-01

149

Al-Adwiyah Al-Qalbiyah: introduction and commentary.  

PubMed

Avicenna was a great scientist and philosopher of the 10th century A.D. He wrote about 456 books in various fields of learning. Al-Adwiyah Al-Qalbiyah is perhaps the most important work of Avicenna after Al-Qanun fil Tibb or canon of medicine. Like Al-Qanun, it was also very popular in Europe and was translated into Latin. It has also been translated in Turkish, Uzbbek, and later on in Persian and Urdu. PMID:11609033

Azmi, K A; Hussain, S

1994-07-01

150

Oxidation of NiAl and FeAl  

Microsoft Academic Search

Recent studies on the oxidation of the ?-phases NiAl and FeAl are reviewed. Generally, these aluminides form an alumina layer which should be protective, however, certain special features render the pure phases rather susceptible to accelerated oxidation and corrosion. At 1000°C fast growing metastable modifications ?-, ?- and ?-Al2O3 are formed, which are undergrown by ?-Al2O3 and transform to that

H. J Grabke

1999-01-01

151

Optical gain characteristics in Al-rich AlGaN/AlN quantum wells  

SciTech Connect

The optical gain characteristics of Al-rich AlGaN/AlN quantum wells (QWs) were assessed by the variable stripe length method at room temperature. An Al{sub 0.79}Ga{sub 0.21}N/AlN QW with a well width of 5?nm had a large optical gain of 140?cm{sup ?1}. Increasing the excitation length induced a redshift due to the gain consumption and the consequent saturation of the amplified spontaneous emission. Moreover, a change in the dominant gain polarization with Al composition, which was attributed to switching of the valence band ordering of strained AlGaN/AlN QWs at Al compositions of ?0.8, was experimentally demonstrated.

Oto, Takao; Banal, Ryan G.; Funato, Mitsuru; Kawakami, Yoichi, E-mail: kawakami@kuee.kyoto-u.ac.jp [Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510 (Japan)

2014-05-05

152

Thermal behavior of Al, AlFe- and AlCu-pillared interlayered clays  

Microsoft Academic Search

The purified bentonite parent clay, fraction ?; 2 mm of montmorillonite type, has been pillared by various polyhydroxy cations,\\u000a Al, AlFe and AlCu, using conventional pillaring methods. The thermal behavior of PILCs was investigated by combination of\\u000a X-ray diffraction (XRD), thermal analysis (DTA, TG) and low temperature N2 adsorption\\/desorption (LTNA). Thermal stability\\u000a of Al-, AlFe- and AlCu-PILC samples was estimated

R. P. Marinkovic-Neducin; E. E. Kiss; T. Z. Cukic; D. Z. Obadovic

2004-01-01

153

Al Jazirah, Sudan  

NASA Technical Reports Server (NTRS)

Al Jazirah (also Gezira) is one of the 26 states of Sudan. The state lies between the Blue Nile and the White Nile in the east-central region of the country. It is a well populated area suitable for agriculture. The area was at the southern end of Nubia and little is known about its ancient history and only limited archaeological work has been conducted in this area. The region has benefited from the Gezira Scheme, a program to foster cotton farming begun in 1925. At that time the Sennar Dam and numerous irrigation canals were built. Al Jazirah became the Sudan's major agricultural region with more than 2.5 million acres (10,000 km) under cultivation. The initial development project was semi-private, but the government nationalized it in 1950. Cotton production increased in the 1970s but by the 1990s increased wheat production has supplanted a third of the land formerly seeded with cotton.

The image was acquired December 25, 2006, covers an area of 56 x 36.4 km, and is located near 14.5 degrees north latitude, 33.1 degrees east longitude.

The U.S. science team is located at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The Terra mission is part of NASA's Science Mission Directorate.

2008-01-01

154

Atomic simulations of kinetic friction and its velocity dependence at Al/Al and -Al2O3/ -Al2O3 interfaces  

E-print Network

Atomic simulations of kinetic friction and its velocity dependence at Al/Al and -Al2O3/ -Al2O3-scale Al 001 /Al 001 and -Al2O3 0001 / -Al2O3 0001 interfaces has been investigated using molecular. It is found that kinetic friction during sliding at commensurate -Al2O3 0001 / -Al2O3 0001 interfaces exceeds

Goddard III, William A.

155

Al Mashriq: Lebanon  

NSDL National Science Digital Library

Part of the Al-Mashriq online Web resource for countries located in the Levant, this site is devoted to providing a host of materials, thematically organized, about the country of Lebanon. Persons seeking to read a bit about Lebanon's early history will want to read the first chapter of Kamal Salibi's "A House of Many Mansions-The History of Lebanon," which is provided here. For those looking for a geographic orientation to the landscape of Lebanon, an interactive map provides a number of photographs and brief remarks on various important cities and cultural sites, such as Beirut and the Roman temples at Baalbak. Along with these sections, the site also offers thematic sections devoted to education, food, maps, money, politics, and religion that will be useful to those students looking for background information on Lebanon.

156

Doppelthydrophile Blockcopolymere als Mineralisationstemplate  

NASA Astrophysics Data System (ADS)

Die vorliegende Arbeit beschäftigt sich mit der Synthese und den Eigenschaften von doppelthydrophilen Blockcopolymeren und ihrer Anwendung in einem biomimetischen Mineralisationsprozeß von Calciumcarbonat und Bariumsulfat. Doppelthydrophile Blockcopolymere bestehen aus einem hydrophilen Block, der nicht mit Mineralien wechselwirkt und einem zweiten Polyelektrolyt-Block, der stark mit Mineraloberflächen wechselwirkt. Diese Blockcopolymere wurden durch ringöffnende Polymerisation von N-carboxyanhydriden (NCA's) und a-methoxy-?-amino[poly(ethylene glycol)] PEG-NH2 als Initiator hergestellt. Die hergestellten Blockcopolymere wurden als effektive Wachstumsmodifikatoren für die Kristallisation von Calciumcarbonat und Bariumsulfat Mineralien eingesetzt. Die so erhaltenen Mineralpartikel (Kugeln, Hantel, eiförmige Partikel) wurden durch Lichtmikroskopie in Lösung, SEM und TEM charakterisiert. Röntgenweitwinkelstreuung (WAXS) wurde verwendet, um die Modifikation von Calciumcarbonat zu ermitteln und die Größe der Calciumcarbonat- und Bariumsulfat-Nanopartikel zu ermitteln. This work describes the synthesis and characterization of double hydrophilic block copolymers and their use in a biomimetic mineralization process of Calcium Carbonate and Barium Sulfate. Double hydrophilic block copolymers consist of a hydrophilic block that does not interact with minerals and another hydrophilic polyelectrolyte block that strongly interacts with mineral surfaces. These polymers were synthesised via ring opening polymerisation of N-carboxyanhydride (NCA), and the first hydrophilic block a-methoxy-?-amino[poly(ethylene glycol)] PEG-NH2 was used as an initiator. The prepared block copolymers were used as effective crystal growth modifiers to control the crystallization of Calcium Carbonate and Barium Sulfate minerals. The resulting mineral particles (spheres, dumbbells, egg-like particles) were characterised by light microscopy in solution, by SEM, and by TEM. X-Ray scattering measurements (WAXS) were used to prove the modification of Calcium Carbonate particles and to calculate the size of Calcium Carbonate and Barium Sulfate nanoparticles.

Kasparova, Pavla

2002-07-01

157

Rub' al Khali, Arabia  

NASA Technical Reports Server (NTRS)

The Rub' al Khali is one of the largest sand deserts in the world, encompassing most of the southern third of the Arabian Peninsula. It includes parts of Oman, United Arab Emirates, and Yemen. The desert covers 650,000 square kilometers, more than the area of France. Largely unexplored until recently, the desert is 1000 km long and 500 km wide. The first documented journeys made by Westerners were those of Bertram Thomas in 1931 and St. John Philby in 1932. With daytime temperatures reaching 55 degrees Celsius, and dunes taller than 330 meters, the desert may be one of the most forbidding places on Earth.

The image was acquired December 2, 2005, covers an area of 54.8 x 61.9 km, and is located near 20.7 degrees north latitude, 53.6 degrees east longitude.

The U.S. science team is located at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The Terra mission is part of NASA's Science Mission Directorate.

2008-01-01

158

El Mediterráneo europeo: Una imagen de marca común frente a los países lejanos para los destinos tradicionalmente turísticos de la Unión Europea  

Microsoft Academic Search

En la actualidad el turismo se configura como uno de los sectores de mayor aportación al PIB de determinados países que en pocos años han visto cómo esta industria es capaz de configurarse como un motor fundamental de su economía. En el marco de la Unión Europea, cabe destacar países como Francia, España o Italia y podemos incluir también a

Mecedes Jiménez García

2008-01-01

159

Thermodynamic properties of Al, Ni, NiAl, and Ni3Al from first-principles calculations  

E-print Network

Thermodynamic properties of Al, Ni, NiAl, and Ni3Al from first-principles calculations Y. Wang *, Z The thermodynamic properties of Al, Ni, NiAl, and Ni3Al were studied using the first-principles approach. The 0-K of )1.6 J/mol/K for NiAl and )1.2 J/mol/K for Ni3Al. For Ni, the inclusion of thermal electronic

Chen, Long-Qing

160

Thin Films Using Al Doping  

NASA Astrophysics Data System (ADS)

We have studied the influence of Al doping on the microstructural, optical, and electrical properties of spray-deposited WO3 thin films. XRD analyses confirm that all the films are of polycrystalline WO3 in nature, possessing monoclinic structure. EDX profiles of the Al-doped films show aluminum peaks implying incorporation of Al ions into WO3 lattice. On Al doping, the average crystallite size decreases due to increase in the density of nucleation centers at the time of film growth. The observed variation in the lattice parameter values on Al doping is attributed to the incorporation of Al ions into WO3 lattice. Enhancement in the direct optical band gap compared to the undoped film has been observed on Al doping due to decrease in the width of allowed energy states near the conduction band edge. The refractive indices of the films follow the Cauchy relation of normal dispersion. Electrical resistivity compared to the undoped film has been found to increase on Al doping.

Mukherjee, Ramnayan; Prajapati, C. S.; Sahay, P. P.

2014-09-01

161

Identification of Candida albicans ALS2 and ALS4 and Localization of Als Proteins to the Fungal Cell Surface  

Microsoft Academic Search

Additional genes in the growing ALS family of Candida albicans were isolated by PCR screening of a genomic fosmid library with primers designed from the consensus tandem-repeat sequence of ALS1. This procedure yielded fosmids encoding ALS2 and ALS4. ALS2 and ALS4 conformed to the three-domain structure of ALS genes, which consists of a central domain of tandemly repeated copies of

L. L. HOYER; T. L. PAYNE; J. E. HECHT

1998-01-01

162

[ALS and excitatory amino acid].  

PubMed

AMPA receptor, one of ionotropic glutamate receptors, has been proposed to play a critical role to initiate the neuronal death cascade in motor neuron disease by an increase of Ca2+ influx. There are at least two mechanisms to increase Ca2+ influx through Ca2+-permiable AMPA receptor: a decrease of RNA editing efficacy at the GluR2 Q/R site and a decrease of GluR2 level relative to AMPA receptor subunits. Deficient RNA editing of the AMPA receptor subunit GluR2 at the Q/R site is a primary cause of neuronal death and recently has been reported to be a tightly linked etiological cause of motor neuron death in sporadic amyotrophic lateral sclerosis (ALS). On the other hand, relative low GluR2 level among AMPA receptor subunits seems to increase Ca2+ permeability of motor neurons in familial ALS (ALS1) linked to mutated cupper-zinc superoxide dismutase gene (SOD1). AMPA receptor-mediated mechanism does not seem to play any role in death of motor neurons in X-linked spinal and bulbar muscular atrophy (SBMA). From the molecular pathomechanism of sporadic ALS and ALS1, drugs which increase RNA editing efficacy at the GluR2 Q/R site could be a potent therapy for sporadic ALS, while AMPA receptor antagonists could prevent deterioration from ALS1. PMID:17969352

Aizawa, Hitoshi; Kwak, Shin

2007-10-01

163

In Memory of Al Cameron  

E-print Network

Al Cameron, who died recently (October 3, 2005) at 80, was one of the giants in astrophysics. His insights were profound and his interests were wide-ranging. Originally trained as a nuclear physicist, he made major contributions in a number of fields, including nuclear reactions in stars, nucleosynthesis, the abundances of the elements in the Solar System, and the origin of the Solar System and the Moon. In 1957, Cameron and, independently, Burbidge, Burbidge, Fowler and Hoyle, wrote seminal papers on nuclear astrophysics. Most of our current ideas concerning element formation in stars have followed from those two pioneering and historical works. Al also made many contributions in the field of Solar System physics. Particularly noteworthy in this regard was Cameron's work on the formation of the Moon. Al was also a good friend and mentor of young people. Al Cameron will be missed by many in the community both for his scientific contributions and for his friendship.

Cowan, J J; Cowan, John J.; Truran, James W.

2006-01-01

164

In Memory of Al Cameron  

E-print Network

Al Cameron, who died recently (October 3, 2005) at 80, was one of the giants in astrophysics. His insights were profound and his interests were wide-ranging. Originally trained as a nuclear physicist, he made major contributions in a number of fields, including nuclear reactions in stars, nucleosynthesis, the abundances of the elements in the Solar System, and the origin of the Solar System and the Moon. In 1957, Cameron and, independently, Burbidge, Burbidge, Fowler and Hoyle, wrote seminal papers on nuclear astrophysics. Most of our current ideas concerning element formation in stars have followed from those two pioneering and historical works. Al also made many contributions in the field of Solar System physics. Particularly noteworthy in this regard was Cameron's work on the formation of the Moon. Al was also a good friend and mentor of young people. Al Cameron will be missed by many in the community both for his scientific contributions and for his friendship.

John J. Cowan; James W. Truran

2006-11-27

165

Comparing the Thermodynamic Behaviour of Al(1)+ZrO2(s) to Al(1)+Al2O3(s)  

NASA Technical Reports Server (NTRS)

In an effort to better determine the thermodynamic properties of Al(g) and Al2O(g). the vapor in equilibrium with Al(l)+ZrO2(s) was compared to the vapor in equilibrium with Al(l)+Al2O3(s) over temperature range 1197-to-1509K. The comparison was made directly by Knudsen effusion-cell mass spectrometry with an instrument configured for a multiple effusion-cell vapor source (multi-cell KEMS). Second law enthalpies of vaporization of Al(g) and Al2O(g) together with activity measurements show that Al(l)+ZrO2(s) is thermodynamically equivalent to Al(l)+Al2O3(s), indicating Al(l) remained pure and Al2O3(s) was present in the ZrO2-cell. Subsequent observation of the Al(l)/ZrO2 and vapor/ZrO2 interfaces revealed a thin Al2O3-layer had formed, separating the ZrO2-cell from Al(l) and Al(g)+Al2O(g), effectively transforming it into an Al2O3 effusion-cell. This behavior agrees with recent observations made for Beta-NiAl(Pt) alloys measured in ZrO2 effusion-cell.

Copland, Evan

2004-01-01

166

[Current treatment of AL amyloidosis].  

PubMed

Systemic AL amyloidosis is a rare complication of monoclonal gammopathies. Renal manifestations are frequent, mostly characterized by heavy proteinuria, with nephrotic syndrome and renal failure in more than half of the patients at diagnosis. Without treatment, median survival does not exceed 12 months. Amyloid heart disease and diffusion of amyloid deposits are associated with reduced survival. Treatment of systemic AL amyloidosis has been profoundly modified with the introduction of international criteria for the definition of organ involvement and hematologic response, and with the use of sensitive tests for the measurement of serum-free light chain levels. Melphalan plus dexamethasone is now established as the gold standard for first line treatment of systemic AL, with similar efficacy and reduced treatment-related mortality compared to high-dose therapy. Modern chemotherapy regimens, based on the use of novel agents such as bortezomib and lenalidomide, might further improve patient survival. PMID:21497573

Desport, Estelle; Moumas, Eric; Abraham, Julie; Delbès, Sébastien; Lacotte-Thierry, Laurence; Touchard, Guy; Fermand, Jean-Paul; Bridoux, Frank; Jaccard, Arnaud

2011-11-01

167

Modeling of the ALS linac  

SciTech Connect

The ALS injector linac is used for the Beam Test Facility (BTF) and the Damping Experiments when it is available in between the ALS filings. These experiments usually require higher quality beams and a better characterization than is normally required for ALS operations. This paper focuses on the beam emittance, energy tilt, and especially the longitudinal variation of the beam parameters. For instance, the authors want to avoid longitudinal variations at the low beta section of the BTF. On the other hand, a large energy tilt is required for post-acceleration compression of the bunch using an alpha magnet. The PARMELA code was modified to calculate and display longitudinal variations of the emittance ellipse. Using the Microsoft Development Studio under Windows NT environment the code can handle a much larger number of particles than was previously possible.

Kim, C.H. [Lawrence Berkeley Lab., CA (United States). Advanced Light Source Center

1996-08-01

168

Al Akhawayn University Al Akhawayn partner of TUM since 2002  

E-print Network

Haddouti · Dissertation at Chair for Databases (Prof. Bayer), Professor at Al Akhawayn, now working at BMW) · BMW, Hachim.haddouti@bmw.de #12;Double Degree TUM - Georgia Tech Fakultät für Informatik TUM School

Cengarle, María Victoria

169

Al Akhawayn University Al Akhawayn partner of TUM since 2002  

E-print Network

Haddouti · Dissertation at Chair for Databases (Prof. Bayer), Professor at Al Akhawayn, now working at BMW Alumni) · BMW, Hachim.haddouti@bmw.de #12;Double Degree TUM - Georgia Tech Fakultät für Informatik TUM

Cengarle, María Victoria

170

Al Akhawayn University Al Akhawayn partner of TUM since 2002  

E-print Network

Haddouti · Dissertation at Chair for Databases (Prof. Bayer), Professor at Al Akhawayn, now working at BMW (TUM & AUI Alumni) · BMW, Hachim.haddouti@bmw.de #12;Double Degree TUM - Georgia Tech Fakultät für

Cengarle, María Victoria

171

AlN/Fe/AlN nanostructures for magnetooptic magnetometry  

SciTech Connect

AlN/Fe/AlN/Cu nanostructures with ultrathin Fe grown by sputtering on Si substrates are evaluated as probes for magnetooptical (MO) mapping of weak currents. They are considered for a laser wavelength of ??=?410?nm (3.02?eV) and operate at oblique light incidence angles, ?{sup (0)}, to enable detection of both in-plane and out-of-plane magnetization. Their performance is evaluated in terms of MO reflected wave electric field amplitudes. The maximal MO amplitudes in AlN/Fe/AlN/Cu are achieved by a proper choice of layer thicknesses. The nanostructures were characterized by MO polar Kerr effect at ?{sup (0)}???5° and longitudinal Kerr effect spectra (?{sup (0)}?=?45°) at photon energies between 1 and 5?eV. The nominal profiles were refined using a model-based analysis of the spectra. Closed form analytical expressions are provided, which are useful in the search for maximal MO amplitudes.

Lišková-Jakubisová, E., E-mail: liskova@karlov.mff.cuni.cz; Viš?ovský, Š. [Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 12116 Prague 2 (Czech Republic); Široký, P.; Hrabovský, D.; Pištora, J. [Nanotechnology Center, Technical University of Ostrava, 17. listopadu 15/2172, 70833 Ostrava Poruba (Czech Republic); Harward, I.; Celinski, Z. [Center for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, 1420 Austin Bluffs Pkwy., Colorado Springs, Colorado 80918 (United States)

2014-05-07

172

A nuclear magnetic resonance probe of Fe-Al and Al20V2Eu intermetallics  

E-print Network

Al-rich Fe-Al systems (FeAl2, Fe2 Al5 and Fe4Al13) and Al20V2Eu have complicated structures with quasicrystal-like features making these materials potentially of interest for magnetic behavior. However, there is not much work on these materials...

Chi, Ji

2009-05-15

173

Multiple 0Multiple 0 ----transitions intransitions in NbNb/Al/Al/Al/Al22OO33/Ni/Ni33Al/Al/NbNb Josephson tunnel junctions.Josephson tunnel junctions.  

E-print Network

in Strong Ferromagnetic Pi-Junctions, cond. mat.0606067 4,1 1,2 Ni 2.8 105 1000 This work 4,6 0,45 Ni3Al 1 reasons. · Ni3Al forms a single-crystalline layer and can exhibit a heteroepitaxial relation of being normalizedresidualmagneticmoment,a.u. T, K Normalised residual magnetic moment against temperature of a Nb/Al/Ni3Al/Al/Nb sample

Fominov, Yakov

174

Sobrevivir al cáncer: comer bien  

Cancer.gov

Sobrevivir al cáncer: comer bien Por el Instituto Nacional del Cáncer Bethesda, MD. - Más de 13 millones de personas que viven en Estados Unidos han recibido un diagnóstico de cáncer. Muchas de las personas que han tenido cáncer quieren seguir una

175

Grunditz et al. SUPPLEMENTAL METHODS  

E-print Network

Grunditz et al. 1 SUPPLEMENTAL METHODS Comparing FRAP of different fluorophores To compare YFP and Alexa-Fluor 594 FRAP measurements, YFP-expressing pyramidal cells were filled with Alexa-Fluor 594 through a patch pipette. Two-photon FRAP experiments were performed at 920 nm, and the recovery of both

Oertner, Thomas

176

Dynamic Modeling of ALS Systems  

NASA Technical Reports Server (NTRS)

The purpose of dynamic modeling and simulation of Advanced Life Support (ALS) systems is to help design them. Static steady state systems analysis provides basic information and is necessary to guide dynamic modeling, but static analysis is not sufficient to design and compare systems. ALS systems must respond to external input variations and internal off-nominal behavior. Buffer sizing, resupply scheduling, failure response, and control system design are aspects of dynamic system design. We develop two dynamic mass flow models and use them in simulations to evaluate systems issues, optimize designs, and make system design trades. One model is of nitrogen leakage in the space station, the other is of a waste processor failure in a regenerative life support system. Most systems analyses are concerned with optimizing the cost/benefit of a system at its nominal steady-state operating point. ALS analysis must go beyond the static steady state to include dynamic system design. All life support systems exhibit behavior that varies over time. ALS systems must respond to equipment operating cycles, repair schedules, and occasional off-nominal behavior or malfunctions. Biological components, such as bioreactors, composters, and food plant growth chambers, usually have operating cycles or other complex time behavior. Buffer sizes, material stocks, and resupply rates determine dynamic system behavior and directly affect system mass and cost. Dynamic simulation is needed to avoid the extremes of costly over-design of buffers and material reserves or system failure due to insufficient buffers and lack of stored material.

Jones, Harry

2002-01-01

177

Sliding wear behavior of plasma sprayed Fe 3Al–Al 2O 3 graded coatings  

Microsoft Academic Search

Fe3Al–Al2O3 double-layer coatings (DC), Fe3Al–Fe3Al\\/50%Al2O3–Al2O3 triple-layer coatings (TC) and Fe3Al–Al2O3 graded coatings (GC) were produced from a series of Fe3Al\\/Al2O3 composite powders with different compositions on low carbon steel substrate using PLAXAIR plasma spraying equipment. Friction behaviors and wear resistance of the three kinds of coatings have been investigated under different loads. Tests were carried out using an MRH-3 standard

Jingde Zhang; Kangning Sun; Jiangting Wang; Baoyan Tian; Hongsheng Wang; Yansheng Yin

2008-01-01

178

SMERDON ET AL.: AUXILIARY MATERIAL Auxiliary Material  

E-print Network

SMERDON ET AL.: AUXILIARY MATERIAL 1 Auxiliary Material Spatial Performance of Four Climate Field run [Ammann et al., 2007; hereinafter CCSM] and the GKSS ECHO-g ERIK2 run [González-Rouco et al., 2006-longitude grids and comprise the grid from which all samplings are performed [Smerdon et al., 2008

Smerdon, Jason E.

179

(12) United States Patent Hendricks et al.  

E-print Network

/1976 McGuire 5/1977 Ryan et al. 111978 Bushnell et al. 4/1980 Sukonick et al. (Continued) FOREIGN PATENT DOCUMENTS 4,959,810 A 9/1990 Darbee et al. 4,961,109 A 10/1990 Tanaka 4,272,819 A 611981 Katsumata et al. 4,965,819 A 10/1990 Kannes 4,298,793 A 1111981 Melis et al. 4,965,825 A 10/1990 Harvey et al. 4,361,848 A 1111982

Shamos, Michael I.

180

Identification of Candida albicans ALS2 and ALS4 and localization of als proteins to the fungal cell surface.  

PubMed

Additional genes in the growing ALS family of Candida albicans were isolated by PCR screening of a genomic fosmid library with primers designed from the consensus tandem-repeat sequence of ALS1. This procedure yielded fosmids encoding ALS2 and ALS4. ALS2 and ALS4 conformed to the three-domain structure of ALS genes, which consists of a central domain of tandemly repeated copies of a 108-bp motif, an upstream domain of highly conserved sequences, and a domain of divergent sequences 3' of the tandem repeats. Alignment of five predicted Als protein sequences indicated conservation of N- and C-terminal hydrophobic regions which have the hallmarks of secretory signal sequences and glycosylphosphatidylinositol addition sites, respectively. Heterologous expression of an N-terminal fragment of Als1p in Saccharomyces cerevisiae demonstrated function of the putative signal sequence with cleavage following Ala17. This signal sequence cleavage site was conserved in the four other Als proteins analyzed, suggesting identical processing of each protein. Primary-structure features of the five Als proteins suggested a cell-surface localization, which was confirmed by indirect immunofluorescence with an anti-Als antiserum. Staining was observed on mother yeasts and germ tubes, although the intensity of staining on the mother yeast decreased with elongation of the germ tube. Similar to other ALS genes, ALS2 and ALS4 were differentially regulated. ALS4 expression was correlated with the growth phase of the culture; ALS2 expression was not observed under many different in vitro growth conditions. The data presented here demonstrate that ALS genes encode cell-surface proteins and support the conclusion that the size and number of Als proteins on the C. albicans cell surface vary with strain and growth conditions. PMID:9765564

Hoyer, L L; Payne, T L; Hecht, J E

1998-10-01

181

AlSb/InAs/AlSb quantum wells  

NASA Technical Reports Server (NTRS)

Researchers studied the InAs/AlSb system recently, obtaining 12nm wide quantum wells with room temperature mobilities up to 28,000 cm(exp 2)/V center dot S and low-temperature mobilities up to 325,000 cm(exp 2)/V center dot S, both at high electron sheet concentrations in the 10(exp 12)/cm(exp 2) range (corresponding to volume concentrations in the 10(exp 18)/cm(exp 2) range). These wells were not intentionally doped; the combination of high carrier concentrations and high mobilities suggest that the electrons are due to not-intentional modulation doping by an unknown donor in the AlSb barriers, presumably a stoichiometric defect, like an antisite donor. Inasmuch as not intentionally doped bulk AlSb is semi-insulating, the donor must be a deep one, being ionized only by draining into the even deeper InAs quantum well. The excellent transport properties are confirmed by other observations, like excellent quantum Hall effect data, and the successful use of the quantum wells as superconductive weak links between Nb electrodes, with unprecendentedly high critical current densities. The system is promising for future field effect transistors (FETs), but many processing problems must first be solved. Although the researchers have achieved FETs, the results so far have not been competitive with GaAs FETs.

Kroemer, Herbert

1990-01-01

182

SCIENCE CAREER Al nanoclusters in coagulants and granulates: application  

E-print Network

SCIENCE CAREER Al nanoclusters in coagulants and granulates: application in arsenic removal from suitable for arsenic removal. The aluminum nanocl- usters Al13 (AlO4Al12(OH)24H2O12 7? ) and Al30 (Al2O8Al coagulant or in Al granulate during water treatment. Keywords Arsenic Á Water treatment Á Al nanoclusters Á

Wehrli, Bernhard

183

(12) United States Patent Hendricks et al.  

E-print Network

,272,819 A 611981 Katsumata et al. 4,405,829 A * 911983 Rivest et al. ................. 380/30 4,513,390 A 411985 Walter et al. 4,528,643 A * 711985 Freeny, Jr.................... 705/52 4,578,531 A * 311986 Everhart et Kollin et al. 4,796,220 A 111989 Wolfe 4,829,569 A * 511989 Seth-Smith et al. ........ 380/234 4

Shamos, Michael I.

184

Ordering process of Al 5Ti 3, hAl 2Ti and r-Al 2Ti with f.c.c.-based long-period superstructures in rapidly solidified Al-rich TiAl alloys  

Microsoft Academic Search

Change in microstructure and stability of superstructural phases in Al-rich TiAl alloys containing 58.0–62.5at.% Al were investigated using melt-spun ribbons. Ordering processes of long-period ordered phases such as Al5Ti3, h-Al2Ti and r-Al2Ti in the L10 matrix during annealing were examined. The presence of Al5Ti3 and h-Al2Ti phases in the L10 matrix was confirmed in melt-spun Ti–60.0at.% Al and Ti–62.5at.% Al

T. Nakano; A. Negishi; K. Hayashi; Y. Umakoshi

1999-01-01

185

First-principles calculations on Al/AlB 2 interfaces  

NASA Astrophysics Data System (ADS)

The AlB 2 (1 1 1) surfaces and Al (1 1 1)/AlB 2 (0 0 0 1) interface were studied by first-principles calculations to clarify the heterogeneous nucleation potential of ?-Al grains on AlB 2 particles in purity aluminium and hypoeutectic Al-Si alloys. It is demonstrated that the AlB 2 (0 0 0 1) surface models with more than nine atomic layers exhibit bulk-like interior, wherein the interlayer relaxations localized within the top three layers are well converged. The outmost layer of AlB 2 free surface having a preference of metal atom termination is evidenced by surface energy calculations. With Al atoms continuing the natural stacking sequence of bulk AlB 2, Al-Al metallic bonds are formed across interface during the combination of Al atoms with Al-terminated AlB 2 surface. The calculated interfacial energy of the Al/AlB 2 interface is much larger than that between the ?-Al and aluminium melts, elucidating the poor nucleation potency of ?-Al grains on AlB 2 particles from thermodynamic considerations.

Han, Y. F.; Dai, Y. B.; Wang, J.; Shu, D.; Sun, B. D.

2011-06-01

186

Mg isotopic heterogeneity, Al-Mg isochrons, and canonical 26Al/27Al in the early solar system  

NASA Astrophysics Data System (ADS)

Abstract-There is variability in the Mg isotopic composition that is a reflection of the widespread heterogeneity in the isotopic composition of the elements in the solar system at approximately 100 ppm. Measurements on a single calcium-aluminum-rich inclusion (CAI) gave a good correlation of 26Mg/24Mg with 27<span class="hlt">Al</span>/24Mg, yielding an isochron corresponding to an initial (26<span class="hlt">Al</span>/27<span class="hlt">Al</span>)o = (5.27 ± 0.18) × 10-5 and an initial (26Mg/24Mg)o = -0.127 ± 0.032‰ relative to the standard. This isochron is parallel to that obtained by <link href="#b41 #b42">Jacobsen et <span class="hlt">al</span>. (2008), but is distinctively offset. This demonstrates that there are different initial Mg isotopic compositions in different samples with the same 26<span class="hlt">Al</span>/27<span class="hlt">Al</span>. No inference about uniformity/heterogeneity of 26<span class="hlt">Al</span>/27<span class="hlt">Al</span> on a macro scale can be based on the initial (26Mg/24Mg)o values. Different values of 26<span class="hlt">Al</span>/27<span class="hlt">Al</span> for samples representing the same point in time would prove heterogeneity of 26<span class="hlt">Al</span>/27<span class="hlt">Al</span>. The important issue is whether the bulk solar inventory of 26<span class="hlt">Al</span>/27<span class="hlt">Al</span> was approximately 5 × 10-5 at some point in the early solar system. We discuss ultra refractory phases of solar type oxygen isotope composition with 26<span class="hlt">Al</span>/27<span class="hlt">Al</span> from approximately 5 × 10-5 to below 0.2 × 10-5. We argue that the real issues are: intrinsic heterogeneity in the parent cloud; mechanism and timing for the later production of 16O-poor material; and the relationship to earlier formed 16O-rich material in the disk. 26<span class="hlt">Al</span>-free refractories can be produced at a later time by late infall, if there is an adequate heat source, or from original heterogeneities in the placental molecular cloud from which the solar system formed.</p> <div class="credits"> <p class="dwt_author">Wasserburg, G. J.; Wimpenny, Josh; Yin, Qing-Zhu</p> <p class="dwt_publisher"></p> <p class="publishDate">2012-12-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">187</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://darmuseum.org.kw/dai/the-collections/"> <span id="translatedtitle">The Collections - Dar <span class="hlt">al</span>-Athar <span class="hlt">al</span>-Islamiyyah</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://nsdl.org/nsdl_dds/services/ddsws1-1/service_explorer.jsp">NSDL National Science Digital Library</a></p> <p class="result-summary">Regarded by experts as one of a handful of the most comprehensive collections of Islamic art in the world, the <span class="hlt">al</span>-Sabah holdings in Kuwait feature 20,000 objects from geographically and chronologically diverse locations. Nine categories - Metals, Ceramics, Glass, Ivory & Wood, Jewelry & Hardstone, Numismatics, Rugs & Textiles, Manuscripts & Calligraphy, and Stone & Stucco - can be accessed from the collections page with the click of a mouse. Within each category, short essays contextualize the beautiful photographs of ancient, medieval, and modern Islamic art in a wide variety of mediums and styles.</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">188</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2012-12-11/pdf/2012-29870.pdf"> <span id="translatedtitle">77 FR 73732 - In the Matter of Amendment of the Designation of <span class="hlt">al</span>-Qa'ida in Iraq, aka Jam'at <span class="hlt">al</span> Tawhid wa'<span class="hlt">al</span>...</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013</a></p> <p class="result-summary">...<span class="hlt">al</span>-Rafidayn, aka The Organization of <span class="hlt">al</span>-Jihad's Base of Operations in Iraq, aka <span class="hlt">al</span>-Qaida of Jihad in Iraq, aka <span class="hlt">al</span>-Qaida in Iraq, aka <span class="hlt">al</span>-Qaida in Mesopotamia, aka <span class="hlt">al</span>-Qaida in the Land of the Two Rivers, aka <span class="hlt">al</span>-Qaida of the...</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate">2012-12-11</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">189</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40366577"> <span id="translatedtitle">Electrochemical behaviour and corrosion inhibition of <span class="hlt">Al</span>, <span class="hlt">Al</span>6061 and <span class="hlt">Al</span>–Cu in neutral aqueous solutions</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The electrochemical behaviour of <span class="hlt">Al</span> and two of its widely used alloys, <span class="hlt">Al</span>-6061 and <span class="hlt">Al</span>–Cu, was investigated in neutral solutions at pH 7. The corrosion inhibition of these materials was studied in neutral solutions using sulphates, molybdates and dichromates as passivators. The effectiveness of dichromates as passivators for <span class="hlt">Al</span> and its alloys in these solutions was discussed. X-ray photoelectron spectroscopy</p> <div class="credits"> <p class="dwt_author">W. A. Badawy; F. M. Al-Kharafi; A. S. El-Azab</p> <p class="dwt_publisher"></p> <p class="publishDate">1999-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">190</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19940032245&hterms=base+comp&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dbase%2Bcomp"> <span id="translatedtitle">Ni<span class="hlt">Al</span>-base composite containing high volume fraction of <span class="hlt">Al</span>N for advanced engines</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">A particulate reinforced Ni<span class="hlt">Al-Al</span>N composite alloy has a Ni<span class="hlt">Al</span> matrix and greater than about 13 volume percent fine particles of <span class="hlt">Al</span>N within the matrix. The particles preferably have a diameter from about 15 nanometers to about 50 nanometers. The particulate reinforced Ni<span class="hlt">Al-Al</span>N composite alloy may be prepared by cryomilling prealloyed Ni<span class="hlt">Al</span> in liquid nitrogen using grinding media having a diameter of from about 2 to 6 mm at an impeller speed of from about 450 RPM to about 800 RPM. The cryomilling may be done for a duration of from about 4 hours to about 20 hours to obtain a cryomilled powder. The cryomilled powder may be consolidated to form the particulate reinforced Ni<span class="hlt">Al-Al</span>N composite alloy. The particulate reinforced alloy can further include a toughening alloy. The toughening alloy may include NiCr<span class="hlt">Al</span>Y, FeCr<span class="hlt">Al</span>Y, and Fe<span class="hlt">Al</span>.</p> <div class="credits"> <p class="dwt_author">Hebsur, Mohan (inventor); Whittenbeger, John D. (inventor); Lowell, Carl F. (inventor)</p> <p class="dwt_publisher"></p> <p class="publishDate">1994-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">191</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40360843"> <span id="translatedtitle">New <span class="hlt">Al–Al</span>N composites fabricated by squeeze casting: interfacial phenomena</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Three <span class="hlt">Al–Al</span>N composites (2024, 6060, 5754 with ?45vol% <span class="hlt">Al</span>N) fabricated by squeeze casting were studied by TEM. Chemical reactions occurring at the matrix–<span class="hlt">Al</span>N interfaces have been investigated. Mg<span class="hlt">Al</span>2O4 spinel crystals were found in 6060 and 5754 composites. The magnesium element of the matrix reacts with a very thin alumina layer which is deposited on the <span class="hlt">Al</span>N surfaces during the liquid</p> <div class="credits"> <p class="dwt_author">J Vicens; M Chédru; J. L Chermant</p> <p class="dwt_publisher"></p> <p class="publishDate">2002-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">192</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://sims.ess.ucla.edu/argonlab/pdf/young_etal_Science_2005.pdf"> <span id="translatedtitle">Supra-Canonical 26<span class="hlt">Al</span>/27<span class="hlt">Al</span> and the Residence Time of CAIs in the</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Supra-Canonical 26<span class="hlt">Al</span>/27<span class="hlt">Al</span> and the Residence Time of CAIs in the Solar Protoplanetary Disk Edward D initial 26<span class="hlt">Al</span>/27<span class="hlt">Al</span> ratio of 4.5 Ã? 10­5 has been a fiducial marker for the beginning of the solar system that some CAIs had initial 26<span class="hlt">Al</span>/27<span class="hlt">Al</span> values at least 25% greater than canonical and that the canonical</p> <div class="credits"> <p class="dwt_author">Harrison, Mark</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">193</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/7368756"> <span id="translatedtitle">The <span class="hlt">ALS</span> Gun Electronics system</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The <span class="hlt">ALS</span> Gun Electronics system has been designed to accommodate gun with a custom made socket and high speed electronics circuit which is capable of producing single and multiple electron bunches with time jitters measured at better than 50 PS. The system generates the gated RF signal at ground level before sending it up to the 120 KV-biased gun deck via a fiber optic cable. The current pulse width as a function of grid bias, using an Eimac 8847A planar triode simulating an electron gun, was measured to show the relationship between the two parameters.</p> <div class="credits"> <p class="dwt_author">Lo, C.C.</p> <p class="dwt_publisher"></p> <p class="publishDate">1993-05-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">194</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://arep.med.harvard.edu/pdf/Church98_opore.pdf"> <span id="translatedtitle">United States Patent [19] Church et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">United States Patent [19] Church et <span class="hlt">al</span>. [54] CHARACTERIZATION OF INDIVIDUAL POLYMER MOLECULES BASED 1111111111111111111111111111111111111111111111111111111111111 US005795782A [11] Patent Number: [45] Date of Patent: 5,795,782 Aug. 18, 1998 Boulanger et <span class="hlt">al</span></p> <div class="credits"> <p class="dwt_author">Church, George M.</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">195</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/6044393"> <span id="translatedtitle">Characterization of Nb/<span class="hlt">Al</span>O/sub x-/<span class="hlt">Al</span>/Nb junction structures by anodization spectroscopy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The thin tunneling barrier in Nb/<span class="hlt">AlOx-Al</span>/Nb Josephson junction was characterized by anodization spectroscopy. The authors' studies focus on Nb/<span class="hlt">Al</span>Ox and <span class="hlt">Al</span>/Nb interfaces in Nb/<span class="hlt">AlOx-Al</span>/Nb structures made by varying certain process parameters. The interface quality is greatly affected by film thickness, layer sequence, annealing, and existence of a thin oxide. Anodization spectroscopy is a useful technique to diagnose the tunneling barrier in the Nb/<span class="hlt">AlOx-Al</span>/Nb Josephson junctions during fabrication processes.</p> <div class="credits"> <p class="dwt_author">Imamura, T.; Hasuo, S.</p> <p class="dwt_publisher"></p> <p class="publishDate">1989-03-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">196</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://vertes.columbian.gwu.edu/publicat_html/Vertes%202011%20US%207,964,843%20B2.pdf"> <span id="translatedtitle">(12) United States Patent Vertes et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">(12) United States Patent Vertes et <span class="hlt">al</span>. (54) THREE-DIMENSIONAL MOLECULAR IMAGING BY INFRARED LASER/0012831 <span class="hlt">Al</span> Jan. 21, 2010 Related U.S. Application Data (63) Continuation-in-part of application No. 121176,656,690 B2 6,744,046 B2 6,991,903 B2 7,084,396 B2 12/2003 Crooke et <span class="hlt">al</span>. 612004 Valaskovic et <span class="hlt">al</span>. 112006 Fu</p> <div class="credits"> <p class="dwt_author">Vertes, Akos</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">197</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://vertes.columbian.gwu.edu/publicat_html/Vertes%202011%20US%208,084,734%20B2.pdf"> <span id="translatedtitle">(12) United States Patent Vertes et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">(12) United States Patent Vertes et <span class="hlt">al</span>. (54) LASER DESORPTION IONIZATION AND PEPTIDE SEQUENCING. (21) Appl. No.: 11/674,671 (22) Filed: Feb. 14,2007 (65) Prior Publication Data US 2009/0321626 <span class="hlt">Al</span> Dec Suizdak et <span class="hlt">al</span>. 6,589,485 B2 7/2003 Koster 6,794,196 B2 912004 Fonash et <span class="hlt">al</span>. 6,846,681 B2 112005 Buriak et</p> <div class="credits"> <p class="dwt_author">Vertes, Akos</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">198</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/22150036"> <span id="translatedtitle">Aluminium distribution in ZSM-5 revisited: The role of <span class="hlt">Al-Al</span> interactions</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">We present a theoretical study of the distribution of <span class="hlt">Al</span> atoms in zeolite ZSM-5 with Si/<span class="hlt">Al</span>=47, where we focus on the role of <span class="hlt">Al-Al</span> interactions rather than on the energetics of <span class="hlt">Al</span>/Si substitutions at individual sites. Using interatomic potential methods, we evaluate the energies of the full set of symmetrically independent configurations of <span class="hlt">Al</span> siting in a Si{sub 94}<span class="hlt">Al</span>{sub 2}O{sub 192} cell. The equilibrium <span class="hlt">Al</span> distribution is determined by the interplay of two factors: the energetics of the <span class="hlt">Al</span>/Si substitution at an individual site, which tends to populate particular T sites (e.g., the T14 site), and the <span class="hlt">Al-Al</span> interaction, which at this Si/<span class="hlt">Al</span> maximises <span class="hlt">Al-Al</span> distances in general agreement with Dempsey's rule. However, it is found that the interaction energy changes approximately as the inverse of the square of the distance between the two <span class="hlt">Al</span> atoms, rather than the inverse of the distance expected if this were merely charge repulsion. Moreover, we find that the anisotropic nature of the framework density plays an important role in determining the magnitude of the interactions, which are not simply dependent on <span class="hlt">Al-Al</span> distances. - Graphical abstract: Role of <span class="hlt">Al-Al</span> interactions in high silica ZSM-5 is shown to be anisotropic in nature and not dependent solely on Coulombic interactions. Highlights: Black-Right-Pointing-Pointer Si-<span class="hlt">Al</span> distribution in ZSM-5 is revisited, stressing the role of the <span class="hlt">Al-Al</span> interaction. Black-Right-Pointing-Pointer Coulomb interactions are not the key factors controlling the <span class="hlt">Al</span> siting. Black-Right-Pointing-Pointer Anisotropy of the framework is identified as a source of departure from Dempsey's rule.</p> <div class="credits"> <p class="dwt_author">Ruiz-Salvador, A. Rabdel, E-mail: rabdel@imre.oc.uh.cu [Group of Materials Developed by Design, Division of Chemistry and Technology of Materials, Institute of Materials Science and Engineering (IMRE), University of Havana, Havana 10400 (Cuba); Grau-Crespo, Ricardo; Gray, Aileen E.; Lewis, Dewi W. [Department of Chemistry, University College London, 20 Gordon Street, London, WC1H OAJ (United Kingdom)] [Department of Chemistry, University College London, 20 Gordon Street, London, WC1H OAJ (United Kingdom)</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-02-15</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">199</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/10174408"> <span id="translatedtitle">Nonstoichiometry of <span class="hlt">Al</span>-Zr intermetallic phases</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Nonstoichiometry of metastable cubic {beta}{prime} and equilibrium tetragonal {beta} <span class="hlt">Al</span>-Zr intermetallic phases of the nominal composition <span class="hlt">Al</span>{sub 3}Zr in <span class="hlt">Al</span>-rich alloys has been extensively studied. It is proposed that the ``dark contrast`` of {beta}{prime} core in {beta}{prime}/{sigma}{prime} complex precipitates, in <span class="hlt">Al</span>-Li-Zr based alloys, is caused by incorporation of <span class="hlt">Al</span> and Li atoms into the {beta}{prime} phase on Zr sublattice sites, forming nonstoichiometric <span class="hlt">Al</span>-Zr intermetallic phases, rather than by Li partitioning only. {beta}{prime} particles contain very small amounts of Zr, approximately 5 at.%, much less than the stoichiometric 25 at.% in the <span class="hlt">Al</span>{sub 3}Zr metastable phase. These particles are, according to simulation of high resolution images, of the <span class="hlt">Al</span>{sub 3}(<span class="hlt">Al</span>{sub 0.4}Li{sub 0.4}Zr{sub 0.2}) type. Nonstoichiometric particles of average composition <span class="hlt">Al</span>{sub 4}Zr and <span class="hlt">Al</span>{sub 6}Zr are observed also in the binary <span class="hlt">Al</span>-Zr alloy, even after annealing for several hours at 600{degree}C.</p> <div class="credits"> <p class="dwt_author">Radmilovic, V.; Thomas, G.</p> <p class="dwt_publisher"></p> <p class="publishDate">1994-06-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">200</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014IJMMM..21..796S"> <span id="translatedtitle">Comparison of Ti<span class="hlt">Al</span>N, <span class="hlt">Al</span>CrN, and <span class="hlt">AlCrN/TiAl</span>N coatings for cutting-tool applications</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Monolayer and bilayer coatings of Ti<span class="hlt">Al</span>N, <span class="hlt">Al</span>CrN, and <span class="hlt">AlCrN/TiAl</span>N were deposited onto tungsten carbide inserts using the plasma enhanced physical vapor deposition process. The microstructures of the coatings were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The SEM micrographs revealed that the <span class="hlt">Al</span>CrN and <span class="hlt">AlCrN/TiAl</span>N coatings were uniform and highly dense and contained only a limited number of microvoids. The Ti<span class="hlt">Al</span>N coating was non-uniform and highly porous and contained more micro droplets. The hardness and scratch resistance of the specimens were measured using a nanoindentation tester and scratch tester, respectively. Different phases formed in the coatings were analyzed by X-ray diffraction (XRD). The <span class="hlt">AlCrN/TiAl</span>N coating exhibited a higher hardness (32.75 GPa), a higher Young's modulus (561.97 GPa), and superior scratch resistance ( L CN = 46 N) compared to conventional coatings such as Ti<span class="hlt">Al</span>N, <span class="hlt">Al</span>CrN, and TiN.</p> <div class="credits"> <p class="dwt_author">Sampath Kumar, T.; Balasivanandha Prabu, S.; Manivasagam, Geetha; Padmanabhan, K. A.</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-08-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_9");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return showDiv("page_2");' href="#">2</a> <a onClick='return showDiv("page_3");' href="#">3</a> <a onClick='return showDiv("page_4");' 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href="#">12</a> <a onClick='return showDiv("page_13");' href="#">13</a> <a onClick='return showDiv("page_14");' href="#">14</a> <a onClick='return showDiv("page_15");' href="#">15</a> <a onClick='return showDiv("page_16");' href="#">16</a> <a onClick='return showDiv("page_17");' href="#">17</a> <a onClick='return showDiv("page_18");' href="#">18</a> <a onClick='return showDiv("page_19");' href="#">19</a> <a onClick='return showDiv("page_20");' href="#">20</a> <a onClick='return showDiv("page_21");' href="#">21</a> <a onClick='return showDiv("page_22");' href="#">22</a> <a onClick='return showDiv("page_23");' href="#">23</a> <a onClick='return showDiv("page_24");' href="#">24</a> <a onClick='return showDiv("page_25");' href="#">25</a> </span> </span> <a id="NextPageLink" onclick='return showDiv("page_12");' href="#" title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">201</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://sci.kj.yamagata-u.ac.jp/~htomimatsu/reprints/Tomimatsu_2007_JpnJEcol.pdf"> <span id="translatedtitle">Klimes et <span class="hlt">al</span>. 1997 Dioscorea japonica</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">and Silvertown 2004 Charpentier et <span class="hlt">al</span>. 2000 Eckert 2000 Maynard Smith 1980 Utricularia australis f. tenuicaulis U. macrorhiza U. australis F1 Kameyama et <span class="hlt">al</span>. 2005 Kameyama and Ohara 2006 3 genet #12;262 Barrett et <span class="hlt">al</span>. 1993, Ohara M (2005) Hybrid origins and F1 dominance in the free-floating, sterile bladderwort, Utricularia</p> <div class="credits"> <p class="dwt_author">Tomimatsu,, Hiroshi</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">202</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://hal.inria.fr/docs/00/14/36/39/PDF/Lazennec.pdf"> <span id="translatedtitle">Freund et <span class="hlt">al</span>. Mechanisms underlying differential expression</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">), colon (Brew et <span class="hlt">al</span>., 1996), lung (Masuya et <span class="hlt">al</span>., 2001), ovary (Xu & Fidler, 2000) and melanoma cancersFreund et <span class="hlt">al</span>. - 1 - Mechanisms underlying differential expression of interleukin-8 in breast cancer, Françoise Vignon and Gwendal Lazennec ¶ INSERM U540 "Molecular and Cellular Endocrinology of Cancers", 60</p> <div class="credits"> <p class="dwt_author">Boyer, Edmond</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">203</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/52758384"> <span id="translatedtitle">Ag-<span class="hlt">Al</span>-Mg (Silver - Aluminium - Magnesium)</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">This document is part of Subvolume A1 'Light Metal Systems. Part 1: Selected Systems from Ag-<span class="hlt">Al</span>-Cu to <span class="hlt">Al</span>-Cu-Er' of Volume 11 'Ternary Alloy Systems - Phase Diagrams, Crystallographic and Thermodynamic Data critically evaluated by MSIT®' of Landolt-Börnstein - Group IV Physical Chemistry. It provides the data for the ternary system Ag-<span class="hlt">Al</span>-Mg (Silver - Aluminium - Magnesium).</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate">2004-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">204</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920064247&hterms=resistance+change&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dresistance%2Bchange"> <span id="translatedtitle">Cyclic oxidation resistance of a reaction milled Ni<span class="hlt">Al-Al</span>N composite</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Based upon recent mechanical property tests a Ni<span class="hlt">Al-Al</span>N composite produced by cryomilling has very attractive high temperature strength. This paper focuses on the oxidation resistance of the Ni<span class="hlt">Al-Al</span>N composite at 1473 and 1573 K as compared to that of Ni-47<span class="hlt">Al</span>-0.15Zr, one of the most oxidation resistant intermetallics. The results of cyclic oxidation tests show that the Ni<span class="hlt">Al-Al</span>N composite has excellent properties although not quite as good as those of Ni-47<span class="hlt">Al</span>-0.15Zr. The onset of failure of the Ni<span class="hlt">Al-Al</span>N was unique in that it was not accompanied by a change in scale composition from alumina to less protective oxides. Failure in the composite appears to be related to the entrapment of <span class="hlt">Al</span>N particles within the alumina scale.</p> <div class="credits"> <p class="dwt_author">Lowell, Carl E.; Barrett, Charles A.; Whittenberger, J. D.</p> <p class="dwt_publisher"></p> <p class="publishDate">1990-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">205</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=20040087167&hterms=factors+required+decision+making&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D80%26Ntt%3Dfactors%2Brequired%2Bdecision%2Bmaking"> <span id="translatedtitle">Systems Engineering Techniques for <span class="hlt">ALS</span> Decision Making</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The Advanced Life Support (<span class="hlt">ALS</span>) Metric is the predominant tool for predicting the cost of <span class="hlt">ALS</span> systems. Metric goals for the <span class="hlt">ALS</span> Program are daunting, requiring a threefold increase in the <span class="hlt">ALS</span> Metric by 2010. Confounding the problem, the rate new <span class="hlt">ALS</span> technologies reach the maturity required for consideration in the <span class="hlt">ALS</span> Metric and the rate at which new configurations are developed is slow, limiting the search space and potentially giving the perspective of a <span class="hlt">ALS</span> technology, the <span class="hlt">ALS</span> Metric may remain elusive. This paper is a sequel to a paper published in the proceedings of the 2003 ICES conference entitled, "Managing to the metric: an approach to optimizing life support costs." The conclusions of that paper state that the largest contributors to the <span class="hlt">ALS</span> Metric should be targeted by <span class="hlt">ALS</span> researchers and management for maximum metric reductions. Certainly, these areas potentially offer large potential benefits to future <span class="hlt">ALS</span> missions; however, the <span class="hlt">ALS</span> Metric is not the only decision-making tool available to the community. To facilitate decision-making within the <span class="hlt">ALS</span> community a combination of metrics should be utilized, such as the Equivalent System Mass (ESM)-based <span class="hlt">ALS</span> metric, but also those available through techniques such as life cycle costing and faithful consideration of the sensitivity of the assumed models and data. Often a lack of data is cited as the reason why these techniques are not considered for utilization. An existing database development effort within the <span class="hlt">ALS</span> community, known as OPIS, may provide the opportunity to collect the necessary information to enable the proposed systems analyses. A review of these additional analysis techniques is provided, focusing on the data necessary to enable these. The discussion is concluded by proposing how the data may be utilized by analysts in the future.</p> <div class="credits"> <p class="dwt_author">Rodriquez, Luis F.; Drysdale, Alan E.; Jones, Harry; Levri, Julie A.</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">206</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=PIA07216&hterms=Arabic+Arabic+al-+arab+yah&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DArabic%2B%257C%2B%25D8%25A7%25D9%2584%25D8%25B9%25D8%25B1%25D8%25A8%25D9%258A%25D8%25A9%2B%257C%2Bal-%25CA%25BBarab%25C4%25AByah%2B%257C%2B%25D8%25B9%25D8%25B1%25D8%25A8%25D9%258A%252F%2526"> <span id="translatedtitle">Opportunity's 'Rub <span class="hlt">al</span> Khali' Panorama</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary"><p/> [figure removed for brevity, see original site] Click on the image for Opportunity's 'Rub <span class="hlt">al</span> Khali' Panorama (QTVR) <p/> This panoramic image, dubbed 'Rub <span class="hlt">al</span> Khali,' was acquired by NASA's Mars Exploration Rover Opportunity on the plains of Meridiani during the period from the rover's 456th to 464th sols on Mars (May 6 to May 14, 2005). Opportunity was about 2 kilometers (1.2 miles) south of 'Endurance Crater' at a place known informally as 'Purgatory Dune.' <p/> The rover was stuck in the dune's deep fine sand for more than a month. 'Rub <span class="hlt">al</span> Khali' (Arabic translation: 'the empty quarter') was chosen as the name for this panorama because it is the name of a similarly barren, desolate part of the Saudi Arabian desert on Earth. <p/> The view spans 360 degrees. It consists of images obtained in 97 individual pointings of the panoramic camera. The camera took images with five camera filters at each pointing. This 22,780-by-6,000-pixel mosaic is an approximately true-color rendering generated using the images acquired through filters admitting light wavelengths of 750, 530, and 480 nanometers. <p/> Lighting varied during the nine sols it took to acquire this panorama, resulting in some small image seams within the mosaic. These seams have been smoothed in sky parts of the mosaic to better simulate the vista that a person would see if able to view it all at the same time on Mars. <p/> Opportunity's tracks leading back to the north (center of the panorama) are a reminder of the rover's long trek from Endurance Crater. The deep ruts dug by Opportunity's wheels as it became stuck in the sand appear in the foreground. The crest and trough of the last ripple the rover crossed before getting stuck is visible in the center. These wind-formed sand features are only about 10 to 15 centimeters (4 to 6 inches) tall. The crest of the actual ripple where the rover got stuck can be seen just to the right of center. The tracks and a few other places on and near ripple crests can be seen in this color image to be dustier than the undisturbed or 'normal' plains soils in Meridiani. Since the time these ruts were made, some of the dust there has been blown away by the wind, reaffirming the dynamic nature of the martian environment, even in this barren, ocean-like desert of sand.</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate">2005-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">207</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2013ApPhL.102e1912S"> <span id="translatedtitle">Oxidation induced softening in <span class="hlt">Al</span> nanowires</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The mechanical properties of metallic nanowires depend dramatically on the atmospheric conditions. Molecular-dynamics simulations with ReaxFF were conducted to study tensile elastic deformation of oxidized <span class="hlt">Al</span> nanowires. The thin amorphous oxide shell formed around <span class="hlt">Al</span> nanowires had a very low Young's modulus of 26 GPa, due to its low density and low <span class="hlt">Al</span>-O coordination. Consequently, for diameters less than 100 nm, the composite Young's modulus of oxide-covered <span class="hlt">Al</span> nanowires showed a size dependence implying that in this case "smaller is softer." The model developed also explained the discrepancies in the reported modulus values of nanometer-scale <span class="hlt">Al</span> thin films.</p> <div class="credits"> <p class="dwt_author">Sen, Fatih G.; Qi, Yue; van Duin, Adri C. T.; Alpas, Ahmet T.</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-02-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">208</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2009bein.book...29D"> <span id="translatedtitle">Instandhaltungsmanagement <span class="hlt">als</span> Gestaltungsfeld Ganzheitlicher Produktionssysteme</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Sich kontinuierlich verändernde Rahmenbedingungen, wie beispielsweise eine steigende Variantenvielfalt, verkürzte Produktlebenszyklen sowie Kundenforderungen nach höherer Qualität, kürzeren Lieferzeiten und geringeren Kosten, fordern von produzierenden Unternehmen eine stetige Anpassung der Prozesse, der Organisation und der Strukturen. Seit den 90er Jahren versuchen immer mehr deutsche Unternehmen diesen veränderten Anforderungen mit der Einführung eines Ganzheitlichen Produktionssystems (GPS) zu begegnen. Ganzheitliche Produktionssysteme sind dabei in ihren Grundlagen an das Toyota Produktionssystem angelehnt, vereinigen aber auch weitere Methoden zu einem unternehmensspezifischen Regelwerk. Im Rahmen des langfristigen Trends zu unternehmensindividuellen Produktionssystemen wird sowohl in der Industrie <span class="hlt">als</span> auch in der Forschung intensiv über das Toyota Produktionssystem, Lean Production, Lean Management und Ganzheitliche Produktionssysteme diskutiert, werden Konzepte zu Implementierung und Betrieb erstellt und die Wirtschaftlichkeit untersucht.</p> <div class="credits"> <p class="dwt_author">Dombrowski, Uwe; Schulze, Sven; Otano, Isabel Crespo</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">209</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2013JTST...22.1283S"> <span id="translatedtitle">Reactive Plasma Spraying of Fine <span class="hlt">Al</span>2O3/<span class="hlt">Al</span>N Feedstock Powder</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Reactive plasma spraying (RPS) is a promising technology for in situ formation of aluminum nitride (<span class="hlt">Al</span>N) coatings. Recently, <span class="hlt">Al</span>N-based coatings were fabricated by RPS of alumina (<span class="hlt">Al</span>2O3) powder in N2/H2 thermal plasma. This study investigated the feasibility of RPS of a fine <span class="hlt">Al</span>2O3/<span class="hlt">Al</span>N mixture and the influence of the plasma gases (N2, H2) on the nitriding conversion, and coating microstructure and properties. Thick <span class="hlt">AlN/Al</span>2O3 coatings with high nitride content were successfully fabricated. The coatings consist of h-<span class="hlt">Al</span>N, c-<span class="hlt">Al</span>N, <span class="hlt">Al</span>5O6N, ?-<span class="hlt">Al</span>2O3, and a small amount of ?-<span class="hlt">Al</span>2O3. Use of fine particles enhanced the nitriding conversion and the melting tendency by increasing the surface area. Furthermore, the <span class="hlt">Al</span>N additive improved the <span class="hlt">Al</span>N content in the coatings. Increasing the N2 gas flow rate improved the nitride content and complete crystal growth to the h-<span class="hlt">Al</span>N phase, and enhanced the coating thickness. On the other hand, though the H2 gas is required for plasma nitriding of the <span class="hlt">Al</span>2O3 particles, increasing its flow rate decreased the nitride content and the coating thickness. Remarkable influence of the plasma gases on the coating composition, microstructure, and properties was observed during RPS of the fine particles.</p> <div class="credits"> <p class="dwt_author">Shahien, Mohammed; Yamada, Motohiro; Yasui, Toshiaki; Fukumoto, Masahiro</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-12-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">210</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://depts.washington.edu/cosmolab/chem/Al-26_Be-10.pdf"> <span id="translatedtitle">UW Cosmogenic Isotopes <span class="hlt">Al</span>-Be 1 EXTRACTION OF <span class="hlt">Al</span> & Be FROM QUARTZ FOR ISOTOPIC ANALYSIS</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">UW Cosmogenic Isotopes <span class="hlt">Al</span>-Be 1 EXTRACTION OF <span class="hlt">Al</span> & Be FROM QUARTZ FOR ISOTOPIC ANALYSIS Summary This method is used to separate <span class="hlt">Al</span> and Be for AMS analysis from pure quartz samples. After adding Be carrier, quartz is dissolved in HF. The solution is sub-sampled for determination of total <span class="hlt">Al</span> content, then dried</p> <div class="credits"> <p class="dwt_author">Stone, John</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">211</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/53608137"> <span id="translatedtitle">Adhesion and nonwetting-wetting transition in the <span class="hlt">Al\\/alpha-Al</span>2O3 interface</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Using a reactive force field (ReaxFF), we investigated the structural, energetic, and adhesion properties, of both solid and liquid <span class="hlt">Al\\/alpha-Al</span>2O3 interfaces. The ReaxFF was developed solely with ab initio calculations on various phases of <span class="hlt">Al</span> and <span class="hlt">Al</span>2O3 and <span class="hlt">Al</span>-O-H clusters. Our computed lattice constants, elastic constants, surface energies, and calculated work of separation for the solid-solid interface agree well with</p> <div class="credits"> <p class="dwt_author">Qing Zhang; Tahir Çagin; Adri van Duin; William A. Goddard; Yue Qi; Louis G. Hector</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">212</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/18507617"> <span id="translatedtitle">Delafossite Cu<span class="hlt">Al</span>O 2 films prepared by reactive sputtering using Cu and <span class="hlt">Al</span> targets</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Composition and structure of Cu<span class="hlt">Al</span>O2 films, deposited through the dc-reactive sputtering method using Cu and <span class="hlt">Al</span> elemental targets and Ar-diluted oxygen gas, were controlled by the Cu and <span class="hlt">Al</span> deposition periods and the postannealing temperature. The delafossite Cu<span class="hlt">Al</span>O2 films were successfully prepared by the postannealing of the films with [Cu]\\/[<span class="hlt">Al</span>]=1 at temperatures higher than 700 °C in the nitrogen atmosphere.</p> <div class="credits"> <p class="dwt_author">N. Tsuboi; Y. Takahashi; S. Kobayashi; H. Shimizu; K. Kato; F. Kaneko</p> <p class="dwt_publisher"></p> <p class="publishDate">2003-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">213</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/22162790"> <span id="translatedtitle">Atom probe analysis of <span class="hlt">Al</span>N interlayers in <span class="hlt">AlGaN/Al</span>N/GaN heterostructures</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Atom probe tomography was used to characterize <span class="hlt">Al</span>N interlayers in <span class="hlt">AlGaN/Al</span>N/GaN heterostructures grown by plasma-assisted molecular beam epitaxy (PAMBE), NH{sub 3}-based molecular beam epitaxy (NH{sub 3}-MBE), and metal-organic chemical vapor deposition (MOCVD). The PAMBE-grown <span class="hlt">Al</span>N interlayer had the highest purity, with nearly 100% of group-III sites occupied by <span class="hlt">Al</span>. The group-III site concentrations of <span class="hlt">Al</span> for interlayers grown by NH{sub 3}-MBE and MOCVD were {approx}85% and {approx}47%, respectively. Hall measurements were performed to determine the two-dimensional electron gas mobility and sheet concentration. Sheet concentrations were {approx}25%-45% higher with molecular beam epitaxy than with MOCVD, and these results matched well with atom probe data.</p> <div class="credits"> <p class="dwt_author">Mazumder, Baishakhi; Kaun, Stephen W.; Speck, James S. [Materials Department, University of California, Santa Barbara, California 93106 (United States)] [Materials Department, University of California, Santa Barbara, California 93106 (United States); Lu, Jing; Keller, Stacia; Mishra, Umesh K. [Electrical and Computer Engineering Department, University of California, Santa Barbara, California 93106 (United States)] [Electrical and Computer Engineering Department, University of California, Santa Barbara, California 93106 (United States)</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-03-18</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">214</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19970023021&hterms=Messing&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3DMessing"> <span id="translatedtitle">Tensile Behavior of <span class="hlt">Al</span>2o3/feal + B and <span class="hlt">Al</span>2o3/fecraly Composites</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The feasibility of <span class="hlt">Al</span>2O3/Fe<span class="hlt">Al</span> + B and <span class="hlt">Al</span>2O3/FeCr<span class="hlt">Al</span>Y composites for high-temperature applications was assessed. The major emphasis was on tensile behavior of both the monolithics and composites from 298 to 1100 K. However, the study also included determining the chemical compatibility of the composites, measuring the interfacial shear strengths, and investigating the effect of processing on the strength of the single-crystal <span class="hlt">Al</span>2O3 fibers. The interfacial shear strengths were low for <span class="hlt">Al</span>203/Fe<span class="hlt">Al</span> + B and moderate to high for <span class="hlt">Al</span>203/FeCr<span class="hlt">Al</span>Y. The difference in interfacial bond strengths between the two systems affected the tensile behavior of the composites. The strength of the <span class="hlt">Al</span>203 fiber was significantly degraded after composite processing for both composite systems and resulted in poor composite tensile properties. The ultimate tensile strength (UTS) values of the composites could generally be predicted with either rule of mixtures (ROM) calculations or existing models when using the strength of the etched-out fiber. The <span class="hlt">Al</span>2O3/Fe<span class="hlt">Al</span> + B composite system was determined to be unfeasible due to poor interfacial shear strengths and a large mismatch in coefficient of thermal expansion (CTE). Development of the <span class="hlt">Al</span>2O3/FeCr<span class="hlt">Al</span>Y system would require an effective diffusion barrier to minimize the fiber strength degradation during processing and elevated temperature service.</p> <div class="credits"> <p class="dwt_author">Draper, S. L.; Eldridge, J. I.; Aiken, B. J. M.</p> <p class="dwt_publisher"></p> <p class="publishDate">1995-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">215</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/58715877"> <span id="translatedtitle">Una aproximación didáctica <span class="hlt">al</span> Guernica de Picasso</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">L’article presenta una aproximació <span class="hlt">al</span> Guernica, de Pablo Picasso, mitjançant l’anàlisi de les seves possibilitats per a l’estudi de la pintura i de la relació entre la creació i el coneixement de la Història de l’Art. <span class="hlt">Al</span> mateix temps, es presenta un model de treball que s’inicia amb una mirada <span class="hlt">als</span> problemes derivats de l’observació per tal d’assolir la interpretació</p> <div class="credits"> <p class="dwt_author">Antonia Fernández Valencia</p> <p class="dwt_publisher"></p> <p class="publishDate">2003-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">216</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/13327420"> <span id="translatedtitle">Overlay-Netze <span class="hlt">als</span> Innovationsmotor im Internet</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Zusammenfassung  Das Internet ist heute eine globale Infrastruktur, deren ständige Verfügbarkeit mehr oder weniger <span class="hlt">als</span> gegeben angenommen wird.\\u000a Die Einführung neuer Technologien (z.?B. Multicast, IPv6) in diese Infrastruktur erweist sich aus unterschiedlichen Gründen\\u000a <span class="hlt">als</span> schwierig. Vielmehr haben sich Overlay-Netze in diesem Kontext <span class="hlt">als</span> Innovationsmotor etabliert. Diese werden von Endgeräten\\u000a am Netzrand aufgespannt, benötigen somit keine neuen Komponenten in der Netzinfrastruktur und</p> <div class="credits"> <p class="dwt_author">Oliver P. Waldhorst; Roland Bless; Martina Zitterbart</p> <p class="dwt_publisher"></p> <p class="publishDate">2010-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">217</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://kuscholarworks.ku.edu/handle/1808/3402"> <span id="translatedtitle">Teatro <span class="hlt">al</span> Sur y la escena Argentina</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">140 LATIN AMERICAN THEATRE REVIEW Teatro <span class="hlt">al</span> Sur y la escena Argentina Acaba de aparecer un nuevo número de Teatro <span class="hlt">al</span> Sur, Revista Latinoamericana. Su título de tapa - Teatro Argentino a varias voces - resume la intención de esta nueva entrega... publicación: nos pareció oportuno apelar <span class="hlt">al</span> testimonio directo de algunos de nuestros creadores y a través de sus voces - con particulares texturas y coloraturas - ir configurando un fragmento significativo del presente de nuestra escena. Hemos preferido...</p> <div class="credits"> <p class="dwt_author">Editors</p> <p class="dwt_publisher"></p> <p class="publishDate">2000-04-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">218</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/827568"> <span id="translatedtitle">Superbend era begins swiftly at the <span class="hlt">ALS</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The successful installation and commissioning of high-field superconducting bend magnets (superbends) in three curved sectors of <span class="hlt">ALS</span> storage ring was the first time the magnet lattice of an operating synchrotron light source has been retrofitted in this fundamental way. As a result, the <span class="hlt">ALS</span> now offers an expanded spectral range well into the hard x-ray region without compromising either the number of undulators or their high brightness in the soft x-ray region for which the <span class="hlt">ALS</span> design was originally optimized. In sum, when the superbend-enhanced <span class="hlt">ALS</span> started up for user operations in October 2001, it marked the beginning of a new era in its history.</p> <div class="credits"> <p class="dwt_author">Robinson, Art; Tamura, Lori</p> <p class="dwt_publisher"></p> <p class="publishDate">2001-11-29</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">219</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2013JCrGr.383...25P"> <span id="translatedtitle">Growth and characterization of <span class="hlt">AlGaN/AlN/GaN/Al</span>GaN double heterojunction structures with <span class="hlt">Al</span>GaN as buffer layers</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">High electron mobility transistors (HEMTs) structures with GaN, <span class="hlt">Al</span>0.025Ga0.975N and <span class="hlt">Al</span>0.04Ga0.96N high resistivity (HR) buffers were grown on sapphire by metal organic chemical vapor deposition (MOCVD). The structural and electrical properties of these three samples were investigated and compared. By increasing <span class="hlt">Al</span> composition of <span class="hlt">Al</span>GaN buffer, full width at half maximum (FWHM) values of (0002) and (10-12) x-ray rocking curves for buffer increase, indicating higher threading dislocation density. Room temperature noncontact Hall measurements were performed, and the measured 2DEG mobility was 1828 cm2/V s for GaN buffer, 1728 cm2/V s for <span class="hlt">Al</span>0.025Ga0.975N buffer, and 1649 cm2/V s for <span class="hlt">Al</span>0.04Ga0.96N buffer, respectively. Combining the theoretical calculation with the experiments, it was demonstrated that the decrease of mobility was attributed to higher dislocation density in sample with higher <span class="hlt">Al</span> composition of <span class="hlt">Al</span>GaN buffer. Devices were fabricated and it was found that the double heterojunction (DH) HEMT with <span class="hlt">Al</span>0.025Ga0.975N buffer could effectively reduce the buffer leakage current.</p> <div class="credits"> <p class="dwt_author">Peng, Enchao; Wang, Xiaoliang; Xiao, Hongling; Wang, Cuimei; Yin, Haibo; Chen, Hong; Feng, Chun; Jiang, Lijuan; Hou, Xun; Wang, Zhanguo</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-11-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">220</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/20016104"> <span id="translatedtitle"><span class="hlt">AlN\\/Al</span>GaN\\/GaN Metal Insulator Semiconductor Heterostructure Field Effect Transistor</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">We present the characteristics of a novel <span class="hlt">AlN\\/Al</span>GaN\\/GaN metal insulator semiconductor heterostructure field-effect transistor (MIS-HFET) structure with an <span class="hlt">Al</span>N cap layer as a gate insulating layer. The gate leakage current for the <span class="hlt">AlN\\/Al</span>GaN\\/GaN MIS-HFET was shown to be more than three orders of magnitude smaller than that for the <span class="hlt">Al</span>GaN\\/GaN HFET at around -20 V gate bias. This demonstrates that</p> <div class="credits"> <p class="dwt_author">Dong-Hyun Cho; Mitsuaki Shimizu; Toshihide Ide; Hideyuki Ookita; Hajime Okumura</p> <p class="dwt_publisher"></p> <p class="publishDate">2002-01-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_10");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a 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title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">221</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/16706418"> <span id="translatedtitle">Observation of triatomic species with conflicting aromaticity: <span class="hlt">Al</span>Si2- and <span class="hlt">Al</span>Ge2-.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">We created mixed triatomic clusters, <span class="hlt">Al</span>CGe(-), <span class="hlt">Al</span>Si(2)(-), and <span class="hlt">Al</span>Ge(2)(-), and studied their electronic structure and chemical bonding using photoelectron spectroscopy and ab initio calculations. Excellent agreement between theoretical and experimental photoelectron spectra confirmed the predicted global minimum structures for these species. Chemical bonding analysis revealed that the <span class="hlt">Al</span>Si(2)(-) and <span class="hlt">Al</span>Ge(2)(-) anions can be described as species with conflicting (sigma-antiaromatic and pi-aromatic) aromaticity. The <span class="hlt">Al</span>CGe(-) anion represents an interesting example of chemical species which is between classical and aromatic. PMID:16706418</p> <div class="credits"> <p class="dwt_author">Zubarev, Dmitry Yu; Boldyrev, Alexander I; Li, Xi; Wang, Lai-Sheng</p> <p class="dwt_publisher"></p> <p class="publishDate">2006-05-25</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">222</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.springerlink.com/index/g8826m46hk4581g1.pdf"> <span id="translatedtitle">Precipitation behavior of Heusler phase (Ni 2 <span class="hlt">Al</span>Hf) in multiphase Ni<span class="hlt">Al</span> alloy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Precipitation behavior of Heusler phase (Ni2<span class="hlt">Al</span>Hf) in a directionally solidified (DS) Ni<span class="hlt">Al</span>- 28Cr-5Mo-1Hf (at.%) alloy was examined using scanning electron microscope (SEM)\\u000a and transmission electron microscope (TEM). In the as-cast alloy, the Ni2<span class="hlt">Al</span>Hf phase generally appeared on the Ni<span class="hlt">Al</span>\\/Cr(Mo) interface, which degraded the Ni<span class="hlt">Al</span>\\/Cr(Mo) eutectic structure. In the heat-treated\\u000a alloy, the density of the intercellular Ni2<span class="hlt">Al</span>Hf phase was slightly reduced.</p> <div class="credits"> <p class="dwt_author">C. Y. Cui; J. T. Guo; H. Q. Ye</p> <p class="dwt_publisher"></p> <p class="publishDate">2006-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">223</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2011JNuM..410....1K"> <span id="translatedtitle">Interdiffusion in U 3Si-<span class="hlt">Al</span>, U 3Si 2-<span class="hlt">Al</span>, and USi-<span class="hlt">Al</span> dispersion fuels during irradiation</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Uranium-silicide compound fuel dispersion in an <span class="hlt">Al</span> matrix is used in research and test reactors worldwide. Interaction layer (IL) growth between fuel particles and the matrix is one of performance issues. The interaction layer growth data for U 3Si, U 3Si 2 and USi dispersions in <span class="hlt">Al</span> were obtained from both out-of-pile and in-pile tests. The IL is dominantly U(<span class="hlt">Al</span>Si) 3 from out-of-pile tests, but its (<span class="hlt">Al</span> + Si)/U ratio from in-pile tests is higher than the out-of-pile data, because of amorphous behavior of the ILs. IL growth correlations were developed for U 3Si-<span class="hlt">Al</span> and U 3Si 2-<span class="hlt">Al</span>. The IL growth rates were dependent on the U/Si ratio of the fuel compounds. During irradiation, however, the IL growth rates did not decrease with the decreasing U/Si ratio by fission. It is reasoned that transition metal fission products in the IL compensate the loss of U atoms by providing chemical potential for <span class="hlt">Al</span> diffusion and volume expansion by solid swelling and gas bubble swelling. The addition of Mo in U 3Si 2 reduces the IL growth rate, which is similar to that of UMo alloy dispersion in a silicon-added <span class="hlt">Al</span> matrix.</p> <div class="credits"> <p class="dwt_author">Kim, Yeon Soo; Hofman, Gerard L.</p> <p class="dwt_publisher"></p> <p class="publishDate">2011-03-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">224</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/22492060"> <span id="translatedtitle">Characteristics of Cu<span class="hlt">Al</span> 2 Cu 9 <span class="hlt">Al</span> 4 \\/<span class="hlt">Al</span> 2 O 3 nanocomposites synthesized by mechanical treatment</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Summary Reactive milling of Cu-hydroxycarbonate - powder aluminium mixture brings many complex chemical reactions such as decomposition, aluminothermic reduction and mechanical alloying resulting in the formation of nanometer size composites that contain intermetallic phases, ?-Cu9<span class="hlt">Al</span>4 and ?-Cu<span class="hlt">Al</span>2, with aluminium oxide.</p> <div class="credits"> <p class="dwt_author">K. Wieczorek-Ciurowa; K. Gamrat; Z. Saw?owicz</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">225</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2015JMEP...24..426N"> <span id="translatedtitle">Evaluation of Methods of Soldering <span class="hlt">Al</span>Si and <span class="hlt">Al</span>Si-SiC Particle Composite <span class="hlt">Al</span> Foams</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The cellular structure and unique properties of aluminum foams are the reason of their numerous applications and interests in respect of their joining. The paper includes the characterization of the essence of properties and application of aluminum and aluminum composite foams, the limitations, and possibilities of their soldering. The aim of the research is the consideration of methods of soldering <span class="hlt">Al</span>Si foams and <span class="hlt">Al</span>Si-SiC composite foams, and the joint structure. EDS and XRD investigations of the <span class="hlt">Al</span>Si-SiC composite foams' joints were done. The possibility of soldering <span class="hlt">Al</span>Si9 foams and <span class="hlt">Al</span>Si9-SiC composite foams using S-Bond 220 solder was confirmed, and higher tensile strength of the joint than the parent material was also ascertained</p> <div class="credits"> <p class="dwt_author">Nowacki, Jerzy; Moraniec, Kacper</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">226</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://enpub.fulton.asu.edu/cms/papers/siegel_MRS_f2000.pdf"> <span id="translatedtitle">Adhesion, Atomic Structure, and Bonding at theAdhesion, Atomic Structure, and Bonding at the ----<span class="hlt">AlAl</span>22OO33(0001)/<span class="hlt">Al</span>(111) Interface:(0001)/<span class="hlt">Al</span>(111) Interface</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">.5 -3.3 -3.1 -Ecoh/atom[eV] GGA LDA LDA GGA <span class="hlt">Al</span> Bulk 32 34 36 38 40 42 44 46 48 50 52 Volume/<span class="hlt">Al</span>2O3 unit [Ã? 3 ] -39 -38 -37 -36 -35 -34 -33 -32 -31 -30 -Ecoh /<span class="hlt">Al</span>2 O3 unit[eV] GGA LDA GGA LDA <span class="hlt">Al</span>2O3 Bulk #12)<span class="hlt">Al</span>2O3 || (111)<span class="hlt">Al</span> [1010] <span class="hlt">Al</span>2O3 || [110]<span class="hlt">Al</span> <span class="hlt">Al</span>2O3 Oxygen <span class="hlt">Al</span>2O3 Aluminum <span class="hlt">Al</span> Interfacial Atoms Supercells</p> <div class="credits"> <p class="dwt_author">Adams, James B</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">227</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/653353"> <span id="translatedtitle">Electrochemical passivation of ordered Ni<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The passivity and electrochemical behavior of single crystalline, ordered Ni<span class="hlt">Al</span> intermetallic compound in buffered solutions of pH 2, 7, and 12.5 was compared to that of polycrystalline Ni and <span class="hlt">Al</span>. Ni<span class="hlt">Al</span> exhibited improved passivity compared to Ni at a pH of 2, and improved passivity compared to <span class="hlt">Al</span> at pH 12.5. Water oxidation and reduction were enhanced on Ni<span class="hlt">Al</span> compared to <span class="hlt">Al</span>, suggesting the presence of a more conductive or catalytic oxide film. <span class="hlt">Al</span>{sub 2}O{sub 3} was preferentially formed (>60 atom % of all oxidized Ni and <span class="hlt">Al</span> species) throughout the interior of oxide films formed anodically at each pH as well as within the air-formed oxide grown at room temperature. However, the oxide surface layers exhibited a tendency toward nearly equal presence of oxidized Ni{sup +2}, especially as the pH was increased to 7 and 12.5. Therefore, <span class="hlt">Al</span>{sub 2}O{sub 3} formation was favored, but not exclusively, during electrochemical passivation. In contrast, little or no Ni{sup +2} (as NiO or Ni<span class="hlt">Al</span>{sub 2}O{sub 4}) has been reported after high temperature oxidation of Ni<span class="hlt">Al</span>. The composition of the electrochemically grown oxide is influenced by the specific oxide solubility and kinetic formation/dissolution rates at the oxide/solution interface as well as by the free energy of formation of the oxides.</p> <div class="credits"> <p class="dwt_author">Lillard, R.S.; Scully, J.R. [Univ. of Virginia, Charlottesville, VA (United States)</p> <p class="dwt_publisher"></p> <p class="publishDate">1998-06-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">228</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/115436"> <span id="translatedtitle">Stoichiomeetric interlayer bonding of Ni<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">New joining methods must be developed in order to fully utilize the high temperature properties of advanced intermetallic alloys such as Ni<span class="hlt">Al</span>. In this study, a liquid-assisted diffusion bonding method is evaluated which eliminates the need for foreign melting-point depressants. Instead, the intermetallic compound, Ni<span class="hlt">Al</span>, is synthesized within the joint by isothermal reaction of elemental Ni and <span class="hlt">Al</span> coatings preplaced in stoichiometric proportions on the surfaces to be joined. The kinetics of this bonding process were evaluated from a series of interrupted thermal treatments. Single-crystal Ni<span class="hlt">Al</span> substrates were coated with a stoichiometric proportion of <span class="hlt">Al</span> on one side of the joint and Ni on the other by electron beam evaporation. The joints were heated in vacuum above the aluminum liquidus (1200{degrees}C) but below the melting point of the Ni<span class="hlt">Al</span> substrates for times between 1 and 32 h. Relatively thick interlayers, 0.25 mm (0.010 in.) <span class="hlt">Al</span> and 0.165 mm (0.0065 in.) Ni, were used to facilitate characterization of the bond evolution. The composition profiles across the joints were measured by electron probe microanalysis. The liquid <span class="hlt">Al</span> readily wet the Ni interlayer such that a commercial stop-off agent was required to control liquid spreading at 1200{degrees}C. Isothermal solidification was completed after approximately 1 h at 1200{degrees}C and a residual layer of Ni solid-solution fully transformed to Ni<span class="hlt">Al</span> within 4 h at 1200{degrees}C. Grain boundary migration across the joint interface was observed for all heat treatments. The process of stoichiometric interlayer bonding was demonstrated to be a feasible, and potentially very useful method for joining intermetallic compounds such as Ni<span class="hlt">Al</span>. Single-phase Ni<span class="hlt">Al</span> bonds were produced at relatively low temperatures, without applied pressure, and without the addition of foreign melting-point depressants.</p> <div class="credits"> <p class="dwt_author">Strum, M.J.; Henshall, G.A. [Lawrence Livermore National Lab., CA (United States)</p> <p class="dwt_publisher"></p> <p class="publishDate">1994-12-31</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">229</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2015JEMat.tmp...23H"> <span id="translatedtitle">Preparation and Thermoelectric Properties of Yb<span class="hlt">Al</span>3 Thermoelectric Materials with Excessive <span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">A method to prepare Yb<span class="hlt">Al</span>3 sample with an accurate stoichiometric ratio has been developed by a melting, quenching, annealing and spark plasma sintering (SPS) method. A series of Yb<span class="hlt">Al</span>3 thermoelectric materials with nominal compositions Yb<span class="hlt">Al</span>3+x (x = 0-0.3, ?x = 0.1) have been prepared using the method. We have explored the effects of the excessive <span class="hlt">Al</span> on phase compositions, microstructure and transport properties. The quenched samples are composed of Yb<span class="hlt">Al</span>3, Yb<span class="hlt">Al</span>2, Yb, and <span class="hlt">Al</span>. All the annealed samples are composed of main phase Yb<span class="hlt">Al</span>3 and a trace of <span class="hlt">Al</span>; some annealed samples with x = 0 and x = 0.1 still contain a trace of Yb<span class="hlt">Al</span>2. The SPSed samples with x ? 0.1 are composed of single-phase Yb<span class="hlt">Al</span>3, though a trace of Yb<span class="hlt">Al</span>2 still occured in the SPSed sample with x = 0. The electrical conductivity, Seebeck coefficient, power factor, thermal conductivity and ZT values are first increased with increasing x in the range of 0-0.2 and then decreased when x > 0.2. These thermoelectric properties evolutions originate from the change of densities and chemical composition induced by the excessive <span class="hlt">Al</span>. The highest ZT value reaches 0.28 at 300 K for the SPSed sample with x = 0.2.</p> <div class="credits"> <p class="dwt_author">He, Dan-qi; Zhao, Wen-Yu; Mu, Xin; Zhou, Hong-yu; Zhang, Qing-jie</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">230</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40939800"> <span id="translatedtitle">Formation of nickel aluminide coating on ?-Ti<span class="hlt">Al</span> alloy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">A nickel aluminide coating process was developed on ?-Ti<span class="hlt">Al</span> alloy by electroplating a Ni film followed by a high <span class="hlt">Al</span> activity pack cementation carried out in a vacuum with a mixture of fine <span class="hlt">Al</span>, NH4Cl, and <span class="hlt">Al</span>2O3 powders at 1273 K for 18 ks. The coating has a duplex layer structure, an outer Ni2<span class="hlt">Al</span>3 layer and an inner Ti<span class="hlt">Al</span>3\\/Ti<span class="hlt">Al</span>2\\/TiNi<span class="hlt">Al</span>2 layer.</p> <div class="credits"> <p class="dwt_author">Takeshi Izumi; Takumi Nishimoto; Toshio Narita</p> <p class="dwt_publisher"></p> <p class="publishDate">2003-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">231</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25193032"> <span id="translatedtitle">Sporadic and hereditary amyotrophic lateral sclerosis (<span class="hlt">ALS</span>).</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Genetic discoveries in <span class="hlt">ALS</span> have a significant impact on deciphering molecular mechanisms of motor neuron degeneration. The identification of SOD1 as the first genetic cause of <span class="hlt">ALS</span> led to the engineering of the SOD1 mouse, the backbone of <span class="hlt">ALS</span> research, and set the stage for future genetic breakthroughs. In addition, careful analysis of <span class="hlt">ALS</span> pathology added valuable pieces to the <span class="hlt">ALS</span> puzzle. From this joint effort, major pathogenic pathways emerged. Whereas the study of TDP43, FUS and C9ORF72 pointed to the possible involvement of RNA biology in motor neuron survival, recent work on P62 and UBQLN2 refocused research on protein degradation pathways. Despite all these efforts, the etiology of most cases of sporadic <span class="hlt">ALS</span> remains elusive. Newly acquired genomic tools now allow the identification of genetic and epigenetic factors that can either increase <span class="hlt">ALS</span> risk or modulate disease phenotype. These developments will certainly allow for better disease modeling to identify novel therapeutic targets for <span class="hlt">ALS</span>. This article is part of a Special Issue entitled: Neuromuscular Diseases: Pathology and Molecular Pathogenesis. PMID:25193032</p> <div class="credits"> <p class="dwt_author">Ajroud-Driss, Senda; Siddique, Teepu</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-09-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">232</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/1149231"> <span id="translatedtitle">Quantitatively Probing the <span class="hlt">Al</span> Distribution in Zeolites</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The degree of substitution of Si4+ by <span class="hlt">Al</span>3+ in the oxygen-terminated tetrahedra (<span class="hlt">Al</span> T-sites) of zeolites determines the concentration of ion-exchange and Brønsted acid sites. As the location of the tetrahedra and the associated subtle variations in bond angles influence the acid strength, quantitative information about <span class="hlt">Al</span> T-sites in the framework is critical to rationalize catalytic properties and to design new catalysts. A quantitative analysis is reported that uses a combination of extended X-ray absorption fine structure (EXAFS) analysis and 27<span class="hlt">Al</span> MAS NMR spectroscopy supported by DFT-based molecular dynamics simulations. To discriminate individual <span class="hlt">Al</span> atoms, sets of ab initio EXAFS spectra for various T-sites are generated from DFT-based molecular dynamics simulations allowing quantitative treatment of the EXAFS single- and multiple-photoelectron scattering processes out to 3-4 atom shells surrounding the <span class="hlt">Al</span> absorption center. It is observed that identical zeolite types show dramatically different <span class="hlt">Al</span>-distributions. A preference of <span class="hlt">Al</span> for T-sites that are part of one or more 4-member rings in the framework over those T-sites that are part of only 5- and 6-member rings in the HBEA150 sample has been determined from a combination of these methods. This work was supported by the U. S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences.</p> <div class="credits"> <p class="dwt_author">Vjunov, Aleksei; Fulton, John L.; Huthwelker, Thomas; Pin, Sonia; Mei, Donghai; Schenter, Gregory K.; Govind, Niranjan; Camaioni, Donald M.; Hu, Jian Z.; Lercher, Johannes A.</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-06-11</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">233</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://hal.inria.fr/docs/00/29/83/74/PDF/osd-3-165-2006.pdf"> <span id="translatedtitle">3, 165198, 2006 G. Petihakis et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">for the Mediterranean Sea took place under the Mediterranean 166 #12;OSD 3, 165­198, 2006 M3A system G. Petihakis et <span class="hlt">al</span>-ocean conditions in the Mediterranean Sea (Nittis et5 <span class="hlt">al</span>., 2003). This first phase was devoted to the design Abstract During the Pilot Phase of the Mediterranean Forecasting System (MFSPP) (1998­ 2001) a prototype</p> <div class="credits"> <p class="dwt_author">Boyer, Edmond</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">234</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ddd.uab.cat/pub/ruta/20130740n2a6.pdf"> <span id="translatedtitle"><span class="hlt">Al</span> Qaida and islamismo: two different phenomena</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Despite the general media discourse, the identification of the <span class="hlt">Al</span> Qaida phenomenon with the islamist one, and of the islamist phenomenon with terrorism, is not totally right. The aim of the present paper is to contribute to the denial of the prejudice that Islam is the only reason for <span class="hlt">Al</span> Qaida's violence, and to criticize the use media often do</p> <div class="credits"> <p class="dwt_author">Valentina Saini</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">235</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://kuscholarworks.ku.edu/handle/1808/3040"> <span id="translatedtitle">Homenaje <span class="hlt">al</span> medio siglo de TEUCH</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">SPRING 1993 197 Homenaje <span class="hlt">al</span> medio siglo de TEUCH Domingo Piga El 22 de junio de 1941 se presentó <span class="hlt">al</span> público en la sala Imperio un nuevo grupo teatral, el Teatro Experimental de la Universidad de Chile, formado por estudiantes de la Escuela de...</p> <div class="credits"> <p class="dwt_author">Piga, Domingo</p> <p class="dwt_publisher"></p> <p class="publishDate">1993-04-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">236</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/6089800"> <span id="translatedtitle">Cross-sectional TEM observation of Nb/<span class="hlt">AlOx-Al</span>/Nb junction structures</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">This paper reports on a study of microstructure of Nb/<span class="hlt">Al</span>O{sub x}---<span class="hlt">Al</span>/Nb Josephson junctions by cross-sectional transmission electron microscopy (TEM) which yielded much information regarding the unction barrier region. Both thick Nb and several-nm <span class="hlt">Al</span> form polycrystalline films with columnar structures. Nb is oriented to the (110) plane, and <span class="hlt">Al</span> is (111). The 200-nm lower Nb has a wavy surface with {approximately}5 nm smoothness, but its surface is planarized by several-nm <span class="hlt">Al</span> deposited on it. Thus <span class="hlt">Al</span>O{sub x} with a smoothness under 1 nm can be formed on <span class="hlt">Al</span>. The upper Nb has a good crystalline structure even just above the <span class="hlt">Al</span>O{sub x} barrier.</p> <div class="credits"> <p class="dwt_author">Imamura, T.; Hasuo, S. (Fujitsu Lab., Ltd., 10-1 Morinosato-Wakamiya, Atsugi 243-01 (JP))</p> <p class="dwt_publisher"></p> <p class="publishDate">1991-03-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">237</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/347546"> <span id="translatedtitle">Effect of zirconium in two phase (Ni<span class="hlt">Al</span> + Ni{sub 3}<span class="hlt">Al</span>) alloy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">In order to develop nickel aluminides, such as Ni<span class="hlt">Al</span> and Ni{sub 3}<span class="hlt">Al</span> for high-temperature structural applications, extensive work has been focused on improvement of the mechanical properties. Much work has been carried out with single-phase Ni{sub 3}<span class="hlt">Al</span> alloys with L1{sub 2} structure. As a result, remarkable improvements in these areas have been achieved. Single-phase Ni<span class="hlt">Al</span> with B2 structure has also been studied to some extent, but a remedy for room temperature brittleness has not yet been proposed. Nevertheless, little development effort has been devoted to the two-phase alloys composed of Ni<span class="hlt">Al</span> and Ni{sub 3}<span class="hlt">Al</span>. In this investigation, the effect of zirconium addition on the microstructure and compressive deformation properties of the two-phase alloy consisting of Ni<span class="hlt">Al</span> and Ni{sub 3}<span class="hlt">Al</span> is studied.</p> <div class="credits"> <p class="dwt_author">Lee, J.H.; Kim, H.M. [Korea Inst. of Machinery and Metals, Changwon (Korea, Republic of)] [Korea Inst. of Machinery and Metals, Changwon (Korea, Republic of); Choe, B.H. [Kangnung National Univ. (Korea, Republic of)] [Kangnung National Univ. (Korea, Republic of); Lee, Z.H. [Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of)] [Korea Advanced Inst. of Science and Technology, Taejon (Korea, Republic of)</p> <p class="dwt_publisher"></p> <p class="publishDate">1999-03-05</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">238</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/15020715"> <span id="translatedtitle">Stress Corrosion Cracking of <span class="hlt">Al</span>-Mg and Mg-<span class="hlt">Al</span> Alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Aluminum and magnesium based alloys are being used for reducing the weight of automobiles. For structural applications they must have adequate stress corrosion resistance and yet, under some circumstances, stress corrosion cracking can occur in both alloy systems. Precipitation of the Mg rich Beta-phase (<span class="hlt">Al</span>3Mg2) at grain boundaries of <span class="hlt">Al</span>-Mg alloys and the Beta-phase (Mg17<span class="hlt">Al</span>12) at grain boundaries of the Mg-<span class="hlt">Al</span> alloys are critical factors in their stress corrosion performance. In Mg-<span class="hlt">Al</span>, the Beta-phase is cathodic to the matrix while in the <span class="hlt">Al</span>-Mg case, the Beta-phase is anodic to the matrix. These phases produce localized galvanic induced-corrosion that leads to intergranular stress corrosion cracking and cracking growth rates of 5 and 103 times faster than the solution treated condition, for <span class="hlt">Al</span>-Mg and Mg-<span class="hlt">Al</span>, respectively.</p> <div class="credits"> <p class="dwt_author">Jones, Russell H.; Vetrano, John S.; Windisch, Charles F.</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-12-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">239</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/21852572"> <span id="translatedtitle">Energetics of <span class="hlt">Al</span>?? Keggin cluster compounds.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">The ?-<span class="hlt">Al</span>(13) Keggin aluminum hydroxide clusters are essential models in establishing molecular pathways for geochemical reactions. Enthalpies of formation are reported for two salts of aluminum centered ?-Keggin clusters, <span class="hlt">Al</span>(13) selenate, (Na(<span class="hlt">Al</span>O(4))<span class="hlt">Al</span>(12)(OH)(24)(SeO(4))(4)•12H(2)O) and <span class="hlt">Al</span>(13) sulfate, (Na<span class="hlt">Al</span>O(4)<span class="hlt">Al</span>(12)(OH)(24)(SO(4))(4)•12H(2)O). The measured enthalpies of solution, ?H(sol), at 28?°C in 5 N HCl for the ?-<span class="hlt">Al</span>(13) selenate and sulfate are -924.57 (± 3.83) and -944.30 ( ± 5.66) kJ·mol(-1), respectively. The enthalpies of formation from the elements, ?H(f,el), for <span class="hlt">Al</span>(13) selenate and sulfate are -19,656.35 ( ± 67.30) kJ·mol(-1), and -20,892.39 ( ± 70.01) kJ·mol(-1), respectively. In addition, ?H(f,el) for sodium selenate decahydrate was calculated using data from high temperature oxide melt solution calorimetry measurements: -4,006.39 ( ± 11.91) kJ·mol(-1). The formation of both ?-<span class="hlt">Al</span>(13) Keggin cluster compounds is exothermic from oxide-based components but energetically unfavorable with respect to a gibbsite-based assemblage. To understand the relative affinity of the ?-Keggin clusters for selenate and sulfate, the enthalpy associated with two S-Se exchange reactions was calculated. In the solid state, selenium is favored in the <span class="hlt">Al</span>(13) compound relative to the binary chalcogenate, while in 5 N HCl, sulfur is energetically favored in the cluster compound compared to the aqueous solution. This contribution represents the first thermodynamic study of ?-<span class="hlt">Al</span>(13) cluster compounds and establishes a method for other such molecules, including the substituted versions that have been created for kinetic studies. Underscoring the importance of ?-<span class="hlt">Al</span>(13) clusters in natural and anthropogenic systems, these data provide conclusive thermodynamic evidence that the <span class="hlt">Al</span>(13) Keggin cluster is a crucial intermediate species in the formation pathway from aqueous aluminum monomers to aluminum hydroxide precipitates. PMID:21852572</p> <div class="credits"> <p class="dwt_author">Armstrong, Christopher R; Casey, William H; Navrotsky, Alexandra</p> <p class="dwt_publisher"></p> <p class="publishDate">2011-09-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">240</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25155020"> <span id="translatedtitle">Peripheral nerve ultrasound in <span class="hlt">ALS</span> phenotypes.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Introduction. We sought to determine the cross sectional area (CSA) of peripheral nerves in patients with distinct subtypes of amyotrophic lateral sclerosis (<span class="hlt">ALS</span>). Methods. Ulnar and median nerve ultrasound was performed in 78 <span class="hlt">ALS</span> patients [classic, n=21, upper motor neuron dominant (UMND), n=14, lower motor neuron dominant (LMND), n=20, bulbar, n=15, primary lateral sclerosis (PLS) n=8] and 18 matched healthy controls. Results. Compared to controls <span class="hlt">ALS</span> patients had significant, distally pronounced reductions of ulnar CSA (forearm/wrist level) across all disease groups except for PLS. Median nerve CSA (forearm/wrist level) did not differ between controls and <span class="hlt">ALS</span>. Conclusion. Ulnar nerve ultrasound in <span class="hlt">ALS</span> subgroups revealed significant differences in distal CSA values, which suggests it has value as a marker of LMN involvement. Its potential was particularly evident in UMND and PLS groups, which can be hard to separate clinically, yet their accurate separation has important prognostic implications. © 2014 Wiley Periodicals, Inc. PMID:25155020</p> <div class="credits"> <p class="dwt_author">Schreiber, Stefanie; Abdulla, Susanne; Debska-Vielhaber, Grazyna; Machts, Judith; Dannhardt-Stieger, Verena; Feistner, Helmut; Oldag, Andreas; Goertler, Michael; Petri, Susanne; Kollewe, Katja; Kropf, Siegfried; Schreiber, Frank; Heinze, Hans-Jochen; Dengler, Reinhard; Nestor, Peter J; Vielhaber, Stefan</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-08-25</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_11");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" 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onClick='return showDiv("page_6");' href="#">6</a> <a onClick='return showDiv("page_7");' href="#">7</a> <a onClick='return showDiv("page_8");' href="#">8</a> <a onClick='return showDiv("page_9");' href="#">9</a> <a onClick='return showDiv("page_10");' href="#">10</a> <a onClick='return showDiv("page_11");' href="#">11</a> <a onClick='return showDiv("page_12");' href="#">12</a> <a style="font-weight: bold;">13</a> <a onClick='return showDiv("page_14");' href="#">14</a> <a onClick='return showDiv("page_15");' href="#">15</a> <a onClick='return showDiv("page_16");' href="#">16</a> <a onClick='return showDiv("page_17");' href="#">17</a> <a onClick='return showDiv("page_18");' href="#">18</a> <a onClick='return showDiv("page_19");' href="#">19</a> <a onClick='return showDiv("page_20");' href="#">20</a> <a onClick='return showDiv("page_21");' href="#">21</a> <a onClick='return showDiv("page_22");' href="#">22</a> <a onClick='return showDiv("page_23");' href="#">23</a> <a onClick='return showDiv("page_24");' href="#">24</a> <a onClick='return showDiv("page_25");' href="#">25</a> </span> </span> <a id="NextPageLink" onclick='return showDiv("page_14");' href="#" title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">241</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19840053031&hterms=live+old&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dlive%2Bold"> <span id="translatedtitle"><span class="hlt">Al</span>-26 in the interstellar medium</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The amount of dispersed interstellar <span class="hlt">Al</span>-26 detected by the HEAO 3 gamma-ray spectrometer cannot have been synthesized by supernova explosions if current calculations of the production ratio p(26)/p(27) approximately equal to 0.001 are correct. Simple models of chemical evolution of the Galaxy are presented to explain this point. The observed <span class="hlt">Al</span>-26 is more likely due to about 100 million dispersed novae, or to a single old (10,000-1,000,000 yr) supernova remnant that today surrounds the solar system. If the <span class="hlt">Al</span>-26 is dispersed, the high interstellar ratio today <span class="hlt">Al</span>-26/<span class="hlt">Al</span>-27 about equal to 0.00002 calls into question the requirement that a supernova trigger for formation of the solar system was the cause of a concentration 3-times larger. Also discussed is p-process production in novae with application to the question of live Sm-146 in the solar system.</p> <div class="credits"> <p class="dwt_author">Clayton, D. D.</p> <p class="dwt_publisher"></p> <p class="publishDate">1984-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">242</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19940007975&hterms=Ni3Al&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DNi3Al"> <span id="translatedtitle">Ni<span class="hlt">Al</span> alloys for structural uses</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Alloys based on the intermetallic compound Ni<span class="hlt">Al</span> are of technological interest as high temperature structural alloys. These alloys possess a relatively low density, high melting temperature, good thermal conductivity, and (usually) good oxidation resistance. However, Ni<span class="hlt">Al</span> and Ni<span class="hlt">Al</span>-base alloys suffer from poor fracture resistance at low temperatures as well as inadequate creep strength at elevated temperatures. This research program explored macroalloying additions to Ni<span class="hlt">Al</span>-base alloys in order to identify possible alloying and processing routes which promote both low temperature fracture toughness and high temperature strength. Initial results from the study examined the additions of Fe, Co, and Hf on the microstructure, deformation, and fracture resistance of Ni<span class="hlt">Al</span>-based alloys. Of significance were the observations that the presence of the gamma-prime phase, based on Ni3<span class="hlt">Al</span>, could enhance the fracture resistance if the gamma-prime were present as a continuous grain boundary film or 'necklace'; and the Ni-35<span class="hlt">Al</span>-20Fe alloy was ductile in ribbon form despite a microstructure consisting solely of the B2 beta phase based on Ni<span class="hlt">Al</span>. The ductility inherent in the Ni-35<span class="hlt">Al</span>-20Fe alloy was explored further in subsequent studies. Those results confirm the presence of ductility in the Ni-35<span class="hlt">Al</span>-20Fe alloy after rapid cooling from 750 - 1000 C. However exposure at 550 C caused embrittlement; this was associated with an age-hardening reaction caused by the formation of Fe-rich precipitates. In contrast, to the Ni-35<span class="hlt">Al</span>-20Fe alloy, exploratory research indicated that compositions in the range of Ni-35<span class="hlt">Al</span>-12Fe retain the ordered B2 structure of Ni<span class="hlt">Al</span>, are ductile, and do not age-harden or embrittle after thermal exposure. Thus, our recent efforts have focused on the behavior of the Ni-35<span class="hlt">Al</span>-12Fe alloy. A second parallel effort initiated in this program was to use an alternate processing technique, mechanical alloying, to improve the properties of Ni<span class="hlt">Al</span>-alloys. Mechanical alloying in the conventional sense requires ductile powder particles which, through a cold welding and fracture process, can be dispersion strengthened by submicron-sized oxide particles. Using both the Ni-35<span class="hlt">Al</span>-Fe alloys to contain approx. 1 v/o Y2O3. Preliminary results indicate that mechanically alloyed and extruded Ni<span class="hlt">Al</span>-Fe + Y2O3 alloys when heat treated to a grain-coarsened condition, exhibit improved creep resistance at 1000 C when compared to Ni<span class="hlt">Al</span>; oxidation resistance comparable to Ni<span class="hlt">Al</span>; and fracture toughness values a factor of three better than Ni<span class="hlt">Al</span>. As a result of the research initiated on this NASA program, a subsequent project with support from Inco Alloys International is underway.</p> <div class="credits"> <p class="dwt_author">Koss, D. A.</p> <p class="dwt_publisher"></p> <p class="publishDate">1991-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">243</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/23890868"> <span id="translatedtitle"><span class="hlt">Al</span>-Akhawayni's description of pulmonary circulation.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Since antiquity, heart function and the mechanism of blood circulation within the human body have been the focus of attention of scientists from different parts of the world. Over the passage of time, the theories and works of these scientists have resulted in the achievement of today's knowledge of circulation. The medieval Persian scholar, <span class="hlt">Al</span>-Akhawayni Bukhari (?-983AD), is among the physicians who investigated both the anatomy and the physiology of the human body. <span class="hlt">Al</span>-Akhawayni describes the mechanism of pulmonary circulation in his only extant book, "Hidayat <span class="hlt">al</span>-Muta`llemin fi <span class="hlt">al</span>-Tibb" (A Scholar's Guide to Medicine) with which he made a contribution to the development of knowledge regarding this mechanism in the medicine of the Islamic world. In this paper, <span class="hlt">Al</span>-Akhawayni's viewpoints on anatomy and the function of the heart, its related vessels, and also pulmonary circulation will be briefly discussed. PMID:23890868</p> <div class="credits"> <p class="dwt_author">Yarmohammadi, Hassan; Dalfardi, Behnam; Rezaian, Jafar; Ghanizadeh, Ahmad</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-10-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">244</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2005GeCoA..69.5263K"> <span id="translatedtitle">Assessment of isotopically exchangeable <span class="hlt">Al</span> in soil materials using 26<span class="hlt">Al</span> tracer</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The solubility of aluminium (<span class="hlt">Al</span>) in many acidic soils is controlled by complexation reactions with soil organic matter. In such soils, <span class="hlt">Al</span> solubility is theoretically a function of the pool size of "active" <span class="hlt">Al</span>, i.e., the total amount of <span class="hlt">Al</span> that equilibrates with the soil solution within a defined period of time. To date, no reliable measurements of "active" <span class="hlt">Al</span> in soil materials exist. In this study, we determined the isotopically exchangeable pool of <span class="hlt">Al</span> ( EAl) as an operationally defined assessment of "active" <span class="hlt">Al</span> in acidic mineral soils. The suitability of CuCl 2 and pyrophosphate (Na 4P 2O 7) as extractants for "active" <span class="hlt">Al</span> was also evaluated. Eleven samples, mostly from spodic B horizons, were spiked with carrier-free 26<span class="hlt">Al</span> and equilibrated for different time periods (1-756 h). The size of the <span class="hlt">Al</span> pool with which the 26<span class="hlt">Al</span> tracer exchanged increased with time during the whole experimental period. Thus, contact time between solid and solution phases needs to be defined when assessing the "active" <span class="hlt">Al</span> pool. Values of EAl obtained after 1 to 5 d of equilibration were equal to the amount of CuCl 2 extractable <span class="hlt">Al</span>, but considerably smaller than the Na 4P 2O 7-extractable pool. Equilibration times greater than 5 d resulted in CuCl 2 extractable <span class="hlt">Al</span> concentrations that under-estimated the "active" <span class="hlt">Al</span> pool. Three of the investigated samples were rich in imogolite-type materials (ITM). In these samples, 30-50 % of the added 26<span class="hlt">Al</span> rapidly became associated with soil constituents in forms that could not be extracted by Na 4P 2O 7, indicating that a part of ITM may be in a dynamic state.</p> <div class="credits"> <p class="dwt_author">Kleja, D. Berggren; Standring, W.; Oughton, D. H.; Gustafsson, J.-P.; Fifield, K.; Fraser, A. R.</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-11-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">245</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/60753372"> <span id="translatedtitle">A new discontinuously reinforced aluminum MMC: <span class="hlt">Al+Al</span>Bâ flakes</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Development of a novel metal matrix composite based on the <span class="hlt">Al</span>-B alloy system has been undertaken. Preparation of this discontinuously reinforced material is based on the precipitation of high aspect ratio <span class="hlt">Al</span>Bâ from an <span class="hlt">Al</span>-B alloy. This paper describes a number of efforts forced on preparing high volume fractions (> 30 v%) of <span class="hlt">Al</span>Bâ in aluminum. New insights into the</p> <div class="credits"> <p class="dwt_author">AARON C. HALL; J. ECONOMY</p> <p class="dwt_publisher"></p> <p class="publishDate">2000-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">246</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/18308614"> <span id="translatedtitle">27<span class="hlt">Al</span> NMR studies of NpPd 5<span class="hlt">Al</span> 2</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">We present 27<span class="hlt">Al</span> NMR studies for a single crystal of the Np-based superconductor NpPd5<span class="hlt">Al</span>2(Tc=4.9K). We have observed a five-line 27<span class="hlt">Al</span> NMR spectrum with a center line and four satellite lines separated by first-order nuclear quadrupole splittings. The Knight shift clearly drops below Tc. The temperature dependence of the 27<span class="hlt">Al</span> nuclear spin-lattice relaxation rate shows no coherence peak below Tc, indicating</p> <div class="credits"> <p class="dwt_author">H. Chudo; H. Sakai; Y. Tokunaga; S. Kambe; D. Aoki; Y. Homma; Y. Shiokawa; Y. Haga; S. Ikeda; T. D. Matsuda; Y. ?nuki; H. Yasuoka</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">247</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/22929995"> <span id="translatedtitle">Electrochemical analysis of zincate treatments for <span class="hlt">Al</span> and <span class="hlt">Al</span> alloy films</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Electrochemical behavior of <span class="hlt">Al</span> and <span class="hlt">Al</span> alloy films in zincate solution was investigated to elucidate the effect of the zincate pretreatment for electroless NiP deposition, which is used for under bump metallization for LSI interconnects. The immersion potential for <span class="hlt">Al</span>Cu and <span class="hlt">Al</span>SiCu, immediately reached to constant, which was almost equal potential to zinc reference electrode. The corrosion current for the</p> <div class="credits"> <p class="dwt_author">Mikiko Saito; Takeyuki Maegawa; Takayuki Homma</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">248</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/19441466"> <span id="translatedtitle">Thermal stability of Ti<span class="hlt">Al</span>N and nanocomposite Ti<span class="hlt">Al</span>SiN thin films.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Ti<span class="hlt">Al</span>N and Ti<span class="hlt">Al</span>SiN coatings were synthesized by a cathodic arc deposition process. Titanium, Ti50<span class="hlt">Al</span>50 alloy and <span class="hlt">Al</span>Si (88 at.% of <span class="hlt">Al</span> and 12 at.% of Si) alloy targets were adopted as the cathode materials. X-ray diffraction analyses revealed that Ti0.5<span class="hlt">Al</span>0.5N and Ti49<span class="hlt">Al</span>0.44Si0.07N possess a B1-NaCl crystal structure. The lattice constants of the Ti0.5<span class="hlt">Al</span>0.5N and Ti0.49<span class="hlt">Al</span>0.44Si0.07N calculated from XRD pattern were 0.418 nm and 0.422 nm, respectively. For the high temperature oxidation test, the coated samples were annealed at 900 degrees C in air atmosphere for 2 hours. In this study, the deposited Ti0.5<span class="hlt">Al</span>0.5N had completely transformed to TiO2 and <span class="hlt">Al</span>2O3, and Ti0.49<span class="hlt">Al</span>0.44Si0.07N remained the as-deposited structure after oxidation treatment. It indicated that Ti0.49<span class="hlt">Al</span>0.44Si0.07N possesses superior oxidation resistance than Ti0.5<span class="hlt">Al</span>0.5N, due to the amorphous SiNx phase existed in the nanocomposite structure. The different oxidation mechanisms of Ti50<span class="hlt">Al</span>50N and Ti0.49<span class="hlt">Al</span>0.44Si0.07N at high temperature of 900 degrees C are developed in this study. PMID:19441466</p> <div class="credits"> <p class="dwt_author">Yang, Sheng-Min; Chang, Yin-Yu; Lin, Dong-Yih; Wang, Da-Yung; Wu, Weite</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-02-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">249</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19980019510&hterms=blast+building&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3Dblast%2Bbuilding"> <span id="translatedtitle">Corrosion Studies of 2195 <span class="hlt">Al</span>-Li Alloy and 2219 <span class="hlt">Al</span> Alloy with Differing Surface Treatments</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Corrosion studies of 2195 <span class="hlt">Al</span>-Li and 2219 <span class="hlt">Al</span> alloys have been conducted using the scanning reference electrode technique (SRET) and the polarization resistance (PR) technique. The SRET was used to study corrosion mechanisms, while corrosion rate measurements were studied with the PR technique. Plates of <span class="hlt">Al</span>203 blasted, soda blasted and conversion coated 2219 <span class="hlt">Al</span> were coated with Deft primer and the corrosion rates studied with the EIS technique. Results from all of these studies are presented.</p> <div class="credits"> <p class="dwt_author">Danford, M. D.; Mendrek, M. J.</p> <p class="dwt_publisher"></p> <p class="publishDate">1998-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">250</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/42362138"> <span id="translatedtitle">An investigation of the ordering of the phases Co<span class="hlt">Al</span> and Ni<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">An investigation of the variation of lattice parameter with composition over a small range of composition for the phases Co<span class="hlt">Al</span> and Ni<span class="hlt">Al</span> has confirmed that a peak value occurs and has enabled the corresponding phase-composition to be determined. For Co<span class="hlt">Al</span> this is close to the ideal 50—50% (atomic) composition, but in the case of Ni<span class="hlt">Al</span> the nickel sites are found</p> <div class="credits"> <p class="dwt_author">M. J. Cooper</p> <p class="dwt_publisher"></p> <p class="publishDate">1963-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">251</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.alsa.org/als-care/resources/publications-videos/factsheets/patient-bill-of-rights.html"> <span id="translatedtitle"><span class="hlt">ALS</span> Association's Patient Bill of Rights for People Living with <span class="hlt">ALS</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://medlineplus.gov/">MedlinePLUS</a></p> <p class="result-summary">... The <span class="hlt">ALS</span> Association's Patient Bill of Rights creates a vision of what the <span class="hlt">ALS</span> community is striving to achieve for each person living with <span class="hlt">ALS</span>. > > View the full Patient Bill of Rights Site Map | Press Room | FAQ | Privacy Policy | Link Policy | RSS | Contact Us ...</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">252</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2005PhRvB..72k5423F"> <span id="translatedtitle">Ab initio study of Ag/ <span class="hlt">Al</span>2 O3 and Au/ <span class="hlt">Al</span>2 O3 interfaces</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Structural stability, adhesion, and chemical bonding of the Ag(111)/?-<span class="hlt">Al</span>2O3 (0001) and Au(111)/?-<span class="hlt">Al</span>2O3 (0001) interfaces are investigated by an ab initio approach based on density functional theory. The interfaces are shown to have different stable structures of <span class="hlt">Al</span>2 , <span class="hlt">Al</span>, or O termination depending on the chemical potential of aluminum or oxygen atom. A link to thermodynamic factors, i.e., the partial pressure of oxygen gas or the activity of aluminum, is established based on the ab initio thermodynamics developed recently. For condition applicable to sessile drop experiments, the O-terminated interface could exist for the Ag/<span class="hlt">Al</span>2O3 system but be hard to observe for the Au/<span class="hlt">Al</span>2O3 interfaces, consistent with the known experiments. The <span class="hlt">Al</span>2 termination is possible for the Au/<span class="hlt">Al</span>2O3 interface at relatively low O2 pressure or high <span class="hlt">Al</span> activity but may be hard to form for the Ag/<span class="hlt">Al</span>2O3 interface. Works of adhesion Wad of the stoichiometric interfaces are calculated to be 0.33J/m2 in generalized gradient approximation (GGA) and 0.59J/m2 in local density approximation (LDA) for the Ag/<span class="hlt">Al</span>2O3 interface, 0.29J/m2 in GGA and 0.58J/m2 in LDA for the Au/<span class="hlt">Al</span>2O3 interface, in reasonable agreement with measured data.</p> <div class="credits"> <p class="dwt_author">Feng, Jiwei; Zhang, Wenqing; Jiang, Wan</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-09-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">253</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40939202"> <span id="translatedtitle">Influence of <span class="hlt">Al</span> content on cast microstructures of Ti–<span class="hlt">Al</span> intermetallic compounds</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Cast microstructures of Ti–(35–58) at% <span class="hlt">Al</span> alloys have been studied using optical microscope, scanning electron microscope and transmission electron microscope. The critical compositions of transition from primary ? to ? phase and from ? to ? phase were determined to be about 49.5 at% <span class="hlt">Al</span> and 55.5 at% <span class="hlt">Al</span> respectively. The peritectic compositions of ?p and ?p were measured to</p> <div class="credits"> <p class="dwt_author">J. Y. Jung; J. K. Park; C. H. Chun</p> <p class="dwt_publisher"></p> <p class="publishDate">1999-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">254</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/26924857"> <span id="translatedtitle">EFFECT OF <span class="hlt">AL</span> PARTICLE SIZE ON THE THERMAL DEGRADATION OF <span class="hlt">AL</span>\\/TEFLON MIXTURES</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Reactive mixtures of aluminum (<span class="hlt">Al</span>) and polytetrafluoroethylene (PTFE or Teflon) have applications in propellants, explosives, and pyrotechnics. This study examines the thermal degradation behavior of Teflon and nanometer scale <span class="hlt">Al</span> particles compared with micron-scale <span class="hlt">Al</span> particles. Differential scanning calorimetry and thermo-gravimetric analyses were performed in an argon environment on both nanometer and micron scale particulate mixtures revealing lower ignition temperatures</p> <div class="credits"> <p class="dwt_author">DUSTIN T. OSBORNE; MICHELLE L. PANTOYA</p> <p class="dwt_publisher"></p> <p class="publishDate">2007-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">255</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://policy.rutgers.edu/vtc/reports/REPORTS/VTC_Annual_Report-2010.pdf"> <span id="translatedtitle">Annu<span class="hlt">Al</span> report of the <span class="hlt">Al</span>An M. Voorhees</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">, Sally Scott, Sandra Gligorijevic, EdwinVerin, Natalia Bratslavsky, kaczor58) istockphoto #12;Alan MAnnu<span class="hlt">Al</span> report of the <span class="hlt">Al</span>An M. Voorhees TrAnsporTATion CenTer 2 0 1 0 <span class="hlt">Al</span>An M. Voorhees Tr Jersey 33 livingston Avenue new Brunswick, nJ 08901 policy.rutgers.edu/vtc #12;Contact: Alan M. Voorhees</p> <div class="credits"> <p class="dwt_author">Delgado, Mauricio</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">256</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://cacs.usc.edu/papers/Seymour-NiAlindentation-APL14red.pdf"> <span id="translatedtitle">Nanoindentation of Ni<span class="hlt">Al</span> and Ni3<span class="hlt">Al</span> crystals on (100), (110), and (111) surfaces: A molecular dynamics study</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Nanoindentation of Ni<span class="hlt">Al</span> and Ni3<span class="hlt">Al</span> crystals on (100), (110), and (111) surfaces: A molecular performed to study the nanoindentation of Ni<span class="hlt">Al</span> and Ni3<span class="hlt">Al</span> crystals on three surfaces: (100), (110), and (111 on the indented crystallographic plane: the (100) surface is the softest for Ni<span class="hlt">Al</span> and the hardest for Ni3<span class="hlt">Al</span>. We</p> <div class="credits"> <p class="dwt_author">Southern California, University of</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">257</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/756425"> <span id="translatedtitle">A new discontinuously reinforced aluminum MMC: <span class="hlt">Al+Al</span>B{sub 2} flakes</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Development of a novel metal matrix composite based on the <span class="hlt">Al</span>-B alloy system has been undertaken. Preparation of this discontinuously reinforced material is based on the precipitation of high aspect ratio <span class="hlt">Al</span>B{sub 2} from an <span class="hlt">Al</span>-B alloy. This paper describes a number of efforts forced on preparing high volume fractions (> 30 v%) of <span class="hlt">Al</span>B{sub 2} in aluminum. New insights into the behavior of the <span class="hlt">Al</span>-B alloys system allowed this effort to be successful.</p> <div class="credits"> <p class="dwt_author">HALL,AARON C.; ECONOMY,J.</p> <p class="dwt_publisher"></p> <p class="publishDate">2000-06-08</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">258</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/1540232"> <span id="translatedtitle">High <span class="hlt">Al</span>-content <span class="hlt">Al</span>GaN\\/GaN MODFETs for ultrahigh performance</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The use of an <span class="hlt">Al</span>GaN layer with high <span class="hlt">Al</span> mole-fraction is proposed to increase the equivalent figures of merit of the <span class="hlt">Al</span>GaN\\/GaN MODFET structure. It is shown that the room temperature mobility has little degradation with increasing <span class="hlt">Al</span> mole-fraction up to 50%. 0.7-?m gate-length <span class="hlt">Al</span>0.5Ga0.5N\\/GaN MODFETs by optical lithography exhibit a current density of 1 A\\/mm and three-terminal breakdown voltages</p> <div class="credits"> <p class="dwt_author">Y.-F. Wu; B. P. Keller; P. Fini; S. Keller; T. J. Jenkins; L. T. Kehias; S. P. Denbaars; U. K. Mishra</p> <p class="dwt_publisher"></p> <p class="publishDate">1998-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">259</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40939579"> <span id="translatedtitle">Single-phase interdiffusion in the B2 type intermetallic compounds Ni<span class="hlt">Al</span>, Co<span class="hlt">Al</span> and Fe<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Interdiffusion coefficients, D, in the B2 type Ni<span class="hlt">Al</span>, Co<span class="hlt">Al</span> and Fe<span class="hlt">Al</span> phases have been determined by single phase diffusion couples over a wide temperature range from 1073 to 1773 K. The value of D in the Ni<span class="hlt">Al</span> and Co<span class="hlt">Al</span> phases shows a minimum at about 47 at.% <span class="hlt">Al</span> deviating slightly from the stoichiometric composition, while the value of D in</p> <div class="credits"> <p class="dwt_author">Ryusuke Nakamura; Koichi Takasawa; Yoshihiro Yamazaki; Yoshiaki Iijima</p> <p class="dwt_publisher"></p> <p class="publishDate">2002-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">260</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014ApSS..317..140C"> <span id="translatedtitle">Wetting of polycrystalline SiC by molten <span class="hlt">Al</span> and <span class="hlt">Al</span>-Si alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The wetting of ?-SiC by molten <span class="hlt">Al</span> and <span class="hlt">Al</span>-Si alloys was investigated using a dispensed sessile drop method in a high vacuum. In the <span class="hlt">Al</span>-SiC system, representative wetting stages were identified. The liquid spreading was initially controlled by the deoxidation of the SiC surface and then by the formation of <span class="hlt">Al</span>4C3 at the interface. The intrinsic contact angle for molten <span class="hlt">Al</span> on the polycrystalline ?-SiC surface was suggested to be lower than 90? provided that the oxide films covering the <span class="hlt">Al</span> and SiC surfaces were removed, i.e., the system is partial wetting in nature. An increase in the Si concentration in liquid <span class="hlt">Al</span> weakened the interfacial reaction but improved the final wettability. The role of the Si addition on the wetting was presumably attributed to its segregation at the interface and the formation of strong chemical bonds with the SiC surface.</p> <div class="credits"> <p class="dwt_author">Cong, Xiao-Shuang; Shen, Ping; Wang, Yi; Jiang, Qichuan</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-10-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_12");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous 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showDiv("page_25");' href="#">25</a> </span> </span> <a id="NextPageLink" onclick='return showDiv("page_15");' href="#" title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">261</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920074405&hterms=Al2O3&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DAl2O3"> <span id="translatedtitle">Oxidation of <span class="hlt">Al</span>2O3 continuous fiber-reinforced/Ni<span class="hlt">Al</span> composites</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The 1200 C and 1300 C isothermal and cyclic oxidation behavior of <span class="hlt">Al</span>2O3 continuous fiber-reinforced/Ni<span class="hlt">Al</span> composites were studied. Oxidation resulted in formation of <span class="hlt">Al</span>2O3 external scales in a similar manner as scales formed on monolithic Ni<span class="hlt">Al</span>. The isothermal oxidation of an <span class="hlt">Al</span>2O3/Ni<span class="hlt">Al</span> composite resulted in oxidation of the matrix along the fiber/matrix interface near the fiber ends. This oxide acted as a wedge between the fiber and the matrix, and, under cyclic oxidation conditions, led to further oxidation along the fiber lengths and eventual cracking of the composite. The oxidation behavior of composites in which the <span class="hlt">Al</span>2O3 fibers were sputter coated with nickel prior to processing was much more severe. This was attributed to open channels around the fibers which formed during processing, most likely as a result of the diffusion of the nickel coating into the matrix.</p> <div class="credits"> <p class="dwt_author">Doychak, J.; Nesbitt, J. A.; Noebe, R. D.; Bowman, R. R.</p> <p class="dwt_publisher"></p> <p class="publishDate">1992-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">262</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/22116017"> <span id="translatedtitle">Thermal diffusion in Ni/<span class="hlt">Al</span> multilayer</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Two Ni/<span class="hlt">Al</span> multilayers deposited by ion beam sputtering of nominal design [Ni(200A)/<span class="hlt">Al</span>(100A)] Multiplication-Sign 5 and [Ni(50A)/<span class="hlt">Al</span>(227A)] Multiplication-Sign 5 on Si substrates were annealed at 200 Degree-Sign C. As-deposited and annealed samples were characterized by x-ray diffraction (XRD) and x-ray reflectometry (XRR). The effort was to study the path of alloying in the above two multilayers of same elements but of opposite stoichiometric ratio. We find distinct differences in alloying of these samples.</p> <div class="credits"> <p class="dwt_author">Swain, M.; Bhattacharya, D.; Singh, S.; Basu, S. [Solid State Physics Division, Bhabha Atomic Research Center, Mumbai 400085 (India); Gupta, M. [UGC-DAE-Consortium for Scientific Research, University Campus, Khandwa Road, Indore 452017 (India)</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-02-05</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">263</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/10191071"> <span id="translatedtitle">Ni{sub 3}<span class="hlt">Al</span> aluminide alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">This paper provides a brief review of the recent progress in research and development of Ni{sub 3}<span class="hlt">Al</span> and its alloys. Emphasis has been placed on understanding low ductility and brittle fracture of Ni{sub 3}<span class="hlt">Al</span> alloys at ambient and elevated temperatures. Recent studies have resulted in identifying both intrinsic and extrinsic factors governing the fracture behavior of Ni{sub 3}<span class="hlt">Al</span> alloys. Parallel efforts on alloy design using physical metallurgy principles have led to properties for structural use. Industrial interest in these alloys is high, and examples of industrial involvement in processing and utilization of these alloys are briefly mentioned.</p> <div class="credits"> <p class="dwt_author">Liu, C.T.</p> <p class="dwt_publisher"></p> <p class="publishDate">1993-10-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">264</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/971365"> <span id="translatedtitle">Interdiffusion in Diffusion Couples: U-Mo v. <span class="hlt">Al</span> and <span class="hlt">Al</span>-Si</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Interdiffusion and microstructural development in the U-Mo-<span class="hlt">Al</span> system was examined using solid-tosolid diffusion couples consisting of U-7wt.%Mo, U-10wt.%Mo and U-12wt.%Mo vs. pure <span class="hlt">Al</span>, annealed at 600°C for 24 hours. The influence of Si alloying addition (up to 5 wt.%) in <span class="hlt">Al</span> on the interdiffusion microstructural development was also examined using solid-to-solid diffusion couples consisting of U-7wt.%Mo, U-10wt.%Mo and U-12wt.%Mo vs. pure <span class="hlt">Al</span>, <span class="hlt">Al</span>-2wt.%Si, and <span class="hlt">Al</span>-5wt.%Si annealed at 550°C up to 20 hours. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and electron probe microanalysis (EPMA) were employed to examine the development of a very fine multiphase intermetallic layer. In ternary U-Mo-<span class="hlt">Al</span> diffusion couples annealed at 600°C for 24 hours, interdiffusion microstructure varied of finely dispersed UAl3, UAl4, U6Mo4<span class="hlt">Al</span>43, and UMo2<span class="hlt">Al</span>20 phases while the average composition throughout the interdiffusion zone remained constant at approximately 80 at.% <span class="hlt">Al</span>. Interdiffusion microstructure observed by SEM/TEM analyses and diffusion paths drawn from concentration profiles determined by EPMA appear to deviate from the assumption of “local thermodynamic equilibrium,” and suggest that interdiffusion occurs via supersaturated UAl4 followed by equilibrium transformation into UAl3, U6Mo4<span class="hlt">Al</span>43, UAl4 and UMo2<span class="hlt">Al</span>20 phases. Similar observation was made for U-Mo vs. <span class="hlt">Al</span> diffusion couples annealed at 550°C. The addition of Si (up to 5 wt.%) in <span class="hlt">Al</span> significantly reduced the thickness of the intermetallic layer by changing the constituent phases of the interdiffusion zone developed in U-Mo vs. <span class="hlt">Al</span>-Si diffusion couples. Specifically, the formation of (U,Mo)(<span class="hlt">Al</span>,Si)3 with relatively large solubility for Mo and Si, along with UMo2<span class="hlt">Al</span>20 phases was observed along with disappearance of U6Mo4<span class="hlt">Al</span>43 and UAl4 phases. Simplified understanding based on U-<span class="hlt">Al</span>, U-Si, and Mo-Si binary phase diagrams is discussed in the light of the beneficial effect of Si alloying addition.</p> <div class="credits"> <p class="dwt_author">D. D. Keiser, Jr.; E. Perez; B. Yao; Y. H. Sohn</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-11-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">265</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2012JAP...111f3708H"> <span id="translatedtitle">Electroforming and Ohmic contacts in <span class="hlt">Al-Al</span>2O3-Ag diodes</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Electroforming of metal-insulator-metal (MIM) diodes is a non-destructive dielectric breakdown process that changes the diode from its initial high resistance state (HRS) to a low resistance state (LRS). After electroforming, resistance switching memories (RSMs) use voltages to switch from HRS to LRS and back. Many MIM combinations are proposed for use in RSMs. In many cases conduction in the LRS is nearly temperature independent at low temperatures; an Ohmic contact with a barrier to electron injection of ˜0 eV results from electroforming. Electroforming of <span class="hlt">Al-Al</span>2O3-Ag diodes with amorphous anodic <span class="hlt">Al</span>2O3 thicknesses between 12 and 41 nm has been studied. Two anodizing electrolytes have been used; 0.1 M ammonium pentaborate (bor-H2O) and a solution of 0.1 M of ammonium pentaborate per liter of ethylene glycol (bor-gly). Polarization of <span class="hlt">Al</span>2O3 and negative charge in <span class="hlt">Al</span>2O3 are much larger when <span class="hlt">Al</span>2O3 is formed in bor-H2O solution than when <span class="hlt">Al</span> is anodized in bor-gly solution. Electroforming of <span class="hlt">Al-Al</span>2O3-Ag diodes results in an Ohmic contact at the <span class="hlt">Al-Al</span>2O3 interface, voltage-controlled negative resistance (VCNR) in the current-voltage (I-V) characteristics, electroluminescence (EL), and electron emission into vacuum (EM) from filamentary conducting channels. Two distinct modes of electroforming occur for <span class="hlt">Al-Al</span>2O3-Ag diodes. ?-forming occurs for 2.5 V ? VS ? 5 V, where VS is the applied voltage. It is characterized by an abrupt current jump with the simultaneous appearance of EL and EM. ?-forming occurs for VS ? 7 V. I-V curves, EL, and EM develop gradually and are smaller than for ?-forming. Electroforming occurs more readily for diodes with <span class="hlt">Al</span>2O3 formed in bor-H2O that have greater defect densities. Fully developed I-V curves have similar VCNR, EL, and EM after ?-forming or ?-forming. A model is proposed in which excited states of F-centers, oxygen vacancies in amorphous anodic <span class="hlt">Al</span>2O3, form defect conduction bands. Electroforming that results in an Ohmic contact requires injection of positive charge at the <span class="hlt">Al-Al</span>2O3 interface. ?-forming is the result of ionization of F-center recombination centers with energies that are close to the <span class="hlt">Al</span> Fermi level. Hole injection by high-field ionization of valence band states of <span class="hlt">Al</span>2O3 causes ?-forming.</p> <div class="credits"> <p class="dwt_author">Hickmott, T. W.</p> <p class="dwt_publisher"></p> <p class="publishDate">2012-03-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">266</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2650295"> <span id="translatedtitle">Substitutional alloy of Ce and <span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p class="result-summary">The formation of substitutional alloys has been restricted to elements with similar atomic radii and electronegativity. Using high-pressure at 298 K, we synthesized a face-centered cubic disordered alloy of highly dissimilar elements (large Ce and small <span class="hlt">Al</span> atoms) by compressing the Ce3<span class="hlt">Al</span> intermetallic compound >15 GPa or the Ce3<span class="hlt">Al</span> metallic glass >25 GPa. Synchrotron X-ray diffraction, Ce L3-edge absorption spectroscopy, and ab initio calculations revealed that the pressure-induced Kondo volume collapse and 4f electron delocalization of Ce reduced the differences between Ce and <span class="hlt">Al</span> and brought them within the Hume-Rothery (HR) limit for substitutional alloying. The alloy remained after complete release of pressure, which was also accompanied by the transformation of Ce back to its ambient 4f electron localized state and reversal of the Kondo volume collapse, resulting in a non-HR alloy at ambient conditions. PMID:19188608</p> <div class="credits"> <p class="dwt_author">Zeng, Qiao-Shi; Ding, Yang; Mao, Wendy L.; Luo, Wei; Blomqvist, Andreas; Ahuja, Rajeev; Yang, Wenge; Shu, Jinfu; Sinogeikin, Stas V.; Meng, Yue; Brewe, Dale L.; Jiang, Jian-Zhong; Mao, Ho-kwang</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">267</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/792926"> <span id="translatedtitle">12th Annual <span class="hlt">ALS</span> Users' Association Meeting</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Science took the front seat as 219 Advanced Light Source (<span class="hlt">ALS</span>) users and staff gathered on Monday and Tuesday, October 18 and 19 for the twelfth annual users' meeting. The bulk of the meeting was dedicated to reports on science at the <span class="hlt">ALS</span>. Packed into two busy days were 31 invited oral presentations and 80 submitted poster presentations, as well as time to visit 24 vendor booths. The oral sessions were dedicated to environmental science, chemical dynamics, biosciences, magnetic materials, and atomic and molecular science. In addition, there was an <span class="hlt">ALS</span> highlights session that emphasized new results and a session comprising highlights from the young scientists who will carry the <span class="hlt">ALS</span> into the future.</p> <div class="credits"> <p class="dwt_author">Robinson, Arthur L.</p> <p class="dwt_publisher"></p> <p class="publishDate">1999-12-17</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">268</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://mda.org/publications/everyday-life-with-als"> <span id="translatedtitle">Everyday Life with <span class="hlt">ALS</span>: A Practical Guide</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://medlineplus.gov/">MedlinePLUS</a></p> <p class="result-summary">... a need for practical solutions, <span class="hlt">ALS</span> brings a host of emotional, family and financial concerns that are ... are nearly 200 MDA support groups across the country for people affected by neuromuscular diseases, their families ...</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">269</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/18625409"> <span id="translatedtitle">Glial cells in <span class="hlt">ALS</span>: the missing link?</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Amyotrophic lateral sclerosis (<span class="hlt">ALS</span>) was initially known as Charcot's sclerosis, named after the French neurobiologist and physician Jean-Martin Charcot who first described this type of muscular atrophy in the early nineteenth century. In the United States, <span class="hlt">ALS</span> became widely known as Lou Gehrig's disease after the famous baseball player who succumbed to the disease in the late 1930s. Currently, <span class="hlt">ALS</span> is the most common motor neuron disease, with a worldwide incidence of 8 cases per 100,000 population per year. Familial forms constitute approximately 5% to 10% of all cases. Onset increases with age, with a peak in the seventh decade and a slight preponderance (relative risk, 1.3-1.5) among men compared with women. Rapid progression of motor neuron loss leads to death an average of 3 to 5 years after symptom onset. The cause of <span class="hlt">ALS</span> remains unknown and there is still no curative therapy. PMID:18625409</p> <div class="credits"> <p class="dwt_author">Raibon, Elsa; Todd, Lisa Marie; Möller, Thomas</p> <p class="dwt_publisher"></p> <p class="publishDate">2008-08-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">270</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3866720"> <span id="translatedtitle"><span class="hlt">ALS</span> and Oxidative Stress: The Neurovascular Scenario</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p class="result-summary">Oxidative stress and angiogenic factors have been placed as the prime focus of scientific investigations after an establishment of link between vascular endothelial growth factor promoter (VEGF), hypoxia, and amyotrophic lateral sclerosis (<span class="hlt">ALS</span>) pathogenesis. Deletion of the hypoxia-response element in the vascular endothelial growth factor promoter and mutant superoxide dismutase 1 (SOD1) which are characterised by atrophy and muscle weakness resulted in phenotype resembling human <span class="hlt">ALS</span> in mice. This results in lower motor neurodegeneration thus establishing an important link between motor neuron degeneration, vasculature, and angiogenic molecules. In this review, we have presented human, animal, and in vitro studies which suggest that molecules like VEGF have a therapeutic, diagnostic, and prognostic potential in <span class="hlt">ALS</span>. Involvement of vascular growth factors and hypoxia response elements also highlights the converging role of oxidative stress and neurovascular network for understanding and treatment of various neurodegenerative disorders like <span class="hlt">ALS</span>. PMID:24367722</p> <div class="credits"> <p class="dwt_author">Thakur, Keshav; Gupta, Pawan Kumar</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">271</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25080252"> <span id="translatedtitle">Structure of decagonal <span class="hlt">Al</span>-Ni-Rh.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">The crystal structure of the decagonal phase in the system <span class="hlt">Al</span>-Ni-Rh (d-<span class="hlt">Al</span>-Ni-Rh) was analyzed in the five-dimensional embedding approach based on single-crystal synchrotron X-ray diffraction data. The structure can be described as a quasiperiodic packing of partially overlapping decagonal and pentagonal columnar clusters with ??21?Å diameter and ??4?Å period along the tenfold axis. PMID:25080252</p> <div class="credits"> <p class="dwt_author">Logvinovich, Dmitry; Simonov, Arkadiy; Steurer, Walter</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-08-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">272</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/862324"> <span id="translatedtitle">17th Annual <span class="hlt">ALS</span> Users' Association Meeting</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">It's not exactly Russian roulette, but scheduling October events outdoors is not risk-free, even in usually sunny California. An overflow crowd of more than 400 registered users, <span class="hlt">ALS</span> staff, and vendors enjoyed a full indoor program featuring science highlights and workshops spread over two and a half days from October 18 to October 20. However, a major storm, heralding the onset of the San Francisco Bay Area rainy season, posed a few weather challenges for the events on the <span class="hlt">ALS</span> patio.</p> <div class="credits"> <p class="dwt_author">Robinson, Art; Tamura, Lori</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-11-29</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">273</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/1972SSCom..11..123M"> <span id="translatedtitle">Critical currents in Nb 3<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Alternating current measurements on Nb 3<span class="hlt">Al</span> have shown that large amounts of the sample are driven normal at relatively low fields. Small variations of Tc are associated with very large variations of Hc2 , caused, most probably, by varying degrees of disorder. These regions of low Hc2 material may explain the low critical current densities measured in Nb 3<span class="hlt">Al</span> and other A-15 superconductors.</p> <div class="credits"> <p class="dwt_author">Martin, P. J.; Campbell, A. M.; Evetts, J. E.</p> <p class="dwt_publisher"></p> <p class="publishDate">1972-07-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">274</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/51327012"> <span id="translatedtitle">Structure of Cu32<span class="hlt">Al</span>19</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">POWDER photographs show that the deformed gamma structure Cu32<span class="hlt">Al</span>19 has 51 atoms in each of the pseudo-cubic unit cells; it is closely related to the cubic structure of Cu9<span class="hlt">Al</span>4 with 52 atoms per unit cell1. Whereas the latter is found with 21\\/13 or 22\\/13 electrons per atom, the deformed structure takes up to 89 electrons to 51 atoms. The complex</p> <div class="credits"> <p class="dwt_author">A. J. Bradley</p> <p class="dwt_publisher"></p> <p class="publishDate">1951-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">275</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40287595"> <span id="translatedtitle">Transient oxidation of Ni<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The transient oxidation stage of single crystal (001)Ni<span class="hlt">Al</span> was investigated using scanning electron microscopy, transmission electron microscopy, electron diffraction and high resolution electron microscopy. (001)Ni<span class="hlt">Al</span> was oxidized in air at 950°C for 50h in order to produce transient forms of alumina on the surface. After oxidation, an oxide scale with plate-like surface morphology formed. The platelets on the surface of</p> <div class="credits"> <p class="dwt_author">J. C. Yang; E. Schumann; I. Levin; M. Rühle</p> <p class="dwt_publisher"></p> <p class="publishDate">1998-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">276</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40658438"> <span id="translatedtitle">Dry sliding wear of Ni<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The dry sliding wear behavior of the B2-structured (ordered body-centered cubic) compound Ni<span class="hlt">Al</span> has been studied. Pin-on-disk experiments were conducted at room temperature in air using pins made from extruded Ni<span class="hlt">Al</span> with compositions of 50, 48, and 45 at.% aluminum. Partially stabilized zirconia was the disk material. Wear rate measurements showed an inverse relation between wear and hardness. Hardness increased</p> <div class="credits"> <p class="dwt_author">B. J. Johnson; F. E. Kennedy; I. Baker</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">277</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/41027235"> <span id="translatedtitle">Morphological changes of the Ti 3<span class="hlt">Al</span> 5 phase formed by phase-decomposition of Ti<span class="hlt">Al</span> intermetallics</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">When Ti<span class="hlt">Al</span> intermetallics containing <span class="hlt">Al</span> of 56, 58 and 60 at.% are aged at 973 K, the Ti<span class="hlt">Al</span> phase decomposes into the two-phase state of Ti3<span class="hlt">Al</span>5 and Ti<span class="hlt">Al</span>. Transmission electron microscopy observations showed the following microstructure changes because of ageing: (1) in Ti-56<span class="hlt">Al</span>, first Ti3<span class="hlt">Al</span>5 precipitate particles are thin plates having (001) surfaces and then they coalesce with each other</p> <div class="credits"> <p class="dwt_author">Minoru Doi; Toshiyuki Koyama; Takeshi Taniguchi; Shizuo Naito</p> <p class="dwt_publisher"></p> <p class="publishDate">2002-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">278</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://enpub.fulton.asu.edu/cms/papers/met-ox_bonding.pdf"> <span id="translatedtitle">Electronic structure and bonding at the Alterminated <span class="hlt">Al</span>(111)/<span class="hlt">Al</span>2O3(0001) interface: A first principles study</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Electronic structure and bonding at the <span class="hlt">Al</span>­terminated <span class="hlt">Al</span>(111)/«­<span class="hlt">Al</span>2O3(0001) interface: A first to determine the bonding character of the <span class="hlt">Al</span>­terminated <span class="hlt">Al</span>(111)/«­<span class="hlt">Al</span>2O3(0001) interface. By using an optimized is that between Aluminum and its native ox- ide, <span class="hlt">Al</span>2O3. Aluminum is one of the world's most widely used metals</p> <div class="credits"> <p class="dwt_author">Adams, James B</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">279</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4332387"> <span id="translatedtitle">Oxidative Stress Biomarkers in Sporadic <span class="hlt">ALS</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p class="result-summary">Objective To investigate oxidative stress biomarkers in a cross-sectional pilot study of 50 participants with sporadic <span class="hlt">ALS</span> (s<span class="hlt">ALS</span>) compared to 46 control subjects. Methods We measured urinary 8-oxodeoxyguanosine (8-oxodG), urinary 15-F2t-isoprostane (IsoP), and plasma protein carbonyl by ELISA methods. We also determined if ELISA measurement of 8-oxodG could be validated against measures from high pressure liquid chromatography coupled with electrochemical detection, the current standard method. Results 8-oxodG and IsoP levels adjusted for creatinine were significantly elevated in s<span class="hlt">ALS</span> participants. These differences persisted after age and gender were controlled in regression analyses. These markers are highly and positively correlated with each other. 8-oxodG measured by the two techniques from the same urine sample were positively correlated (P < .0001). Protein carbonyl was not different between s<span class="hlt">ALS</span> participants and controls. Conclusion Using ELISA we confirmed that certain oxidative stress biomarkers were elevated in s<span class="hlt">ALS</span> participants. ELISA may be reliable and thus useful in epidemiology studies requiring large numbers of samples to determine the significance of increased oxidative stress markers in s<span class="hlt">ALS</span>. Further studies are required. PMID:18574762</p> <div class="credits"> <p class="dwt_author">Mitsumoto, Hiroshi; Santella, Regina M.; Liu, Xinhua; Bogdanov, Mikhail; Zipprich, Jennifer; Wu, Hui-Chen; Mahata, Julie; Kilty, Mary; Bednarz, Kate; Bell, Daniel; Gordon, Paul H.; Hornig, Mady; Mehrazin, Mahsa; Naini, Ali; Beal, M. Flint; Factor-Litvak, Pam</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">280</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2009PhyB..404.3216C"> <span id="translatedtitle">27<span class="hlt">Al</span> NMR studies of NpPd 5<span class="hlt">Al</span> 2</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">We present 27<span class="hlt">Al</span> NMR studies for a single crystal of the Np-based superconductor NpPd 5<span class="hlt">Al</span> 2(Tc=4.9 K). We have observed a five-line 27<span class="hlt">Al</span> NMR spectrum with a center line and four satellite lines separated by first-order nuclear quadrupole splittings. The Knight shift clearly drops below Tc. The temperature dependence of the 27<span class="hlt">Al</span> nuclear spin-lattice relaxation rate shows no coherence peak below Tc, indicating that NpPd 5<span class="hlt">Al</span> 2 is an unconventional superconductor with an anisotropic gap. The analysis of the present NMR data provides evidence for strong-coupling d-wave superconductivity in NpPd 5<span class="hlt">Al</span> 2.</p> <div class="credits"> <p class="dwt_author">Chudo, H.; Sakai, H.; Tokunaga, Y.; Kambe, S.; Aoki, D.; Homma, Y.; Shiokawa, Y.; Haga, Y.; Ikeda, S.; Matsuda, T. D.; ?nuki, Y.; Yasuoka, H.</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-10-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_13");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return showDiv("page_2");' href="#">2</a> <a onClick='return showDiv("page_3");' href="#">3</a> <a onClick='return 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Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">281</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/1093153"> <span id="translatedtitle">Thermal Properties in the Mg<span class="hlt">Al</span>2O4-<span class="hlt">Al</span>2O3 System</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Compositional effects on the thermal diffusivity in the Mg<span class="hlt">Al</span>2O4-<span class="hlt">Al</span>2O3 system were studied. The lowest thermal diffusivity, 0.0258 +/-5% cm/s, was measured between 79.8 and 83.9 wt% <span class="hlt">Al</span>2O3 quenched from various temperatures between 1500 and 1700C. All of the chemistries in this range extend past the solvus, but still form a singe super-saturated spinel solid solution, regardless of quenching tempeature. A super-saturated metastable solid solution region was observed at 1500, 1600, and 1700C extending to 83.9, 85.2, and 87.1 wt% <span class="hlt">Al</span>2O3, respectively. Beyond 83.9% <span class="hlt">Al</span>2O3 a significant increase in thermal diffusivity, 11.7%, was observed and its attributed to precipiation of <span class="hlt">Al</span>2O3 through spinodal decomposition.</p> <div class="credits"> <p class="dwt_author">Wilkerson, Dr. Kelley R. [Missouri University of Science and Technology; Smith, Jeffrey D [ORNL; Hemrick, James Gordon [ORNL</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">282</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920049226&hterms=Al2O3&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DAl2O3"> <span id="translatedtitle">Protective <span class="hlt">Al</span>2O3 scale formation on Nb<span class="hlt">Al</span>3-base alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The oxidation of Nb<span class="hlt">Al</span>3 with additions of Cr and Y was studied to determine the mechanisms of the beneficial effects of these elements upon oxidation. Cr additions to the binary Nb<span class="hlt">Al</span>3 alloy of up to 6.8 at. percent reduced the scale growth rates and promoted alpha-<span class="hlt">Al</span>2O3 formation over much longer times relative to binary Nb<span class="hlt">Al</span>3. A major effect of Cr is to form a layer of <span class="hlt">Al</span>NbCr at the metal/scale interface, which is inherently more oxidation-resistant than the matrix alloy in the long term. Yttrium additions to a Cr-containing alloy improved the scale growth rate and adherence and changed the scale microstructure to mimic that of a typical protective <span class="hlt">Al</span>2O3 scale.</p> <div class="credits"> <p class="dwt_author">Doychak, J.; Hebsur, M. G.</p> <p class="dwt_publisher"></p> <p class="publishDate">1991-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">283</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19890059135&hterms=Ni3Al&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DNi3Al"> <span id="translatedtitle">TEM studies of oxidized Ni<span class="hlt">Al</span> and Ni3<span class="hlt">Al</span> cross sections</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Cross sections of oxide scale/(Ni-<span class="hlt">Al</span>) intermetallics were prepared by a new method and studied using primarily TEM. The cross sections were prepared by encasing an oxidized metal specimen sandwich in a low-melting-temperature zinc alloy. Observations of oxidized zirconium-doped beta-Ni<span class="hlt">Al</span> cross sections revealed crystallographic voids beneath an adherent <span class="hlt">Al</span>2O3 scale. The oxide-metal interface was incoherent, but a high dislocation density in the metal near the interface suggested that a large tensile stress was induced by the attached oxide scale. A duplex <span class="hlt">Al</span>2O3-Ni<span class="hlt">Al</span>2O4 scale formed on zirconium-doped and zirconium/boron-doped gamma-prime-Ni3<span class="hlt">Al</span> alloys. Additional results are presented involving oxidation mechanisms and oxide-metal interface structures.</p> <div class="credits"> <p class="dwt_author">Doychak, J.; Ruhle, M.</p> <p class="dwt_publisher"></p> <p class="publishDate">1989-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">284</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/6445913"> <span id="translatedtitle">Theoretical studies of Ni/sub 3/<span class="hlt">Al</span> and Ni<span class="hlt">Al</span> with impurities</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Intermetallic compound has been extensively studied because of their superior properties in strength, low creep rate, and high melting point. But most of the systems have room temperature ductility problems, like Ll/sub 2/ and B2 compounds. Both Ll/sub 2/ Ni/sub 3/<span class="hlt">Al</span> and B2 Ni<span class="hlt">Al</span> exhibit intergranular fracture mode. Understanding grain boundaries in these materials is of particular importance since intergranular fracture limits the applicability of these otherwise promising material. In an effort trying to understand the fracture mechanism, we have used embedded atom potentials to study the properties of Ni/sub 3/<span class="hlt">Al</span> and Ni<span class="hlt">Al</span>. We also consider the effect of boron, sulfur, and nickel segregation on the strength of grain boundaries in Ni/sub 3/<span class="hlt">Al</span> and Ni<span class="hlt">Al</span>. 22 refs., 2 figs.</p> <div class="credits"> <p class="dwt_author">Chen, S.P.; Voter, A.F.; Boring, A.M.; Albers, R.C.; Hay, P.J.</p> <p class="dwt_publisher"></p> <p class="publishDate">1988-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">285</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.phys.ufl.edu/~afh/reprints/GlassyTunnelJunctions_prb.pdf"> <span id="translatedtitle">Time-dependent glassy behavior of interface states in <span class="hlt">Al-AlOx-Al</span> tunnel junctions Jeremy R. Nesbitt and Arthur F. Hebard</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">, aluminum is known to completely wet transition metal surfaces and, when oxidized to completion, forms a tunnel barrier suitable for magnetic4,5 or Josephson6 tunnel junctions. Aluminum oxide <span class="hlt">Al</span>Ox barriers-temperature monitoring of electrical properties of <span class="hlt">Al-AlOx-Al</span> planar tunnel junctions beginning when the deposition</p> <div class="credits"> <p class="dwt_author">Hebard, Arthur F.</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">286</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.phy.mtu.edu/pandey/publications/GLDPGG2004.pdf"> <span id="translatedtitle">Structure, Energetics, Electronic, and Hydration Properties of Neutral and Anionic <span class="hlt">Al</span>3O6, <span class="hlt">Al</span>3O7, and <span class="hlt">Al</span>3O8 Clusters</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">-coordinated <span class="hlt">Al</span> sites. I. Introduction Aluminum oxide, <span class="hlt">Al</span>2O3, traditionally referred to as alumina, is a very. Clusters of aluminum oxide have, conse- quently, been studied both theoretically and experimentallyStructure, Energetics, Electronic, and Hydration Properties of Neutral and Anionic <span class="hlt">Al</span>3O6, <span class="hlt">Al</span>3O7</p> <div class="credits"> <p class="dwt_author">Pandey, Ravi</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">287</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/19916417"> <span id="translatedtitle">Magnetron sputtered nc-<span class="hlt">Al/alpha-Al</span>2O3 nanocomposite thin films for nonvolatile memory application.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">In this paper, we developed nc-<span class="hlt">Al/a-Al</span>2O3 nanocomposite thin films using magnetron sputtering. The nc-<span class="hlt">Al/a-Al</span>2O3 films were sputtered on p-type Si substrates from pure <span class="hlt">Al</span> target in gas mixture of Ar and O2. X-ray photoelectron spectroscopy and high resolution transmission electron microscope studies confirm that the nanocrystalline <span class="hlt">Al</span> are embedded in amorphous <span class="hlt">Al</span>2O3 matrix thus nc-<span class="hlt">Al</span>/ a-<span class="hlt">Al</span>2O3 nanocomposite forms. This nanocomposite thin film exhibits memory effect as a result of charge trapping. PMID:19916417</p> <div class="credits"> <p class="dwt_author">Li, Yibin; Zhang, Sam; Liu, Y; Chen, T P; Sritharan, Thirumany; Xu, Cong</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-07-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">288</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/41015824"> <span id="translatedtitle">Weldability of <span class="hlt">Al</span> 4C 3–<span class="hlt">Al</span> composites via diffusion welding technique</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">In this study, <span class="hlt">Al–Al</span>4C3 composites, produced by powder metallurgy in situ techniques, were joined by diffusion welding technique at 250 MPa pressure with various welding temperatures and durations. Microstructures and shear strengths of the joined areas were determined. <span class="hlt">Al</span> powders were mixed with 2% carbon black and milled in a high energy ball mill (mechanical alloying) for up to 20</p> <div class="credits"> <p class="dwt_author">Halil Arik; Mustafa Aydin; Adem Kurt; Mehmet Turker</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">289</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40530908"> <span id="translatedtitle">On structure and mechanical properties of ultrasonically cast <span class="hlt">Al</span>–2% <span class="hlt">Al</span> 2O 3 nanocomposite</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">An investigation on the structure of an ultrasonically cast nanocomposite of <span class="hlt">Al</span> with 2wt.% nano-sized <span class="hlt">Al</span>2O3 (average size ?10nm) dispersoids showed that the nanocomposite was consisting of nearly continuous nano-alumina dispersed zones (NDZs) in the vicinity of the grain boundaries encapsulating <span class="hlt">Al</span>2O3 depleted zones (ADZs). The mechanical properties were investigated by nanoindentation and tensile tests. The nano-sized dispersoids caused a</p> <div class="credits"> <p class="dwt_author">S. Mula; P. Padhi; S. C. Panigrahi; S. K. Pabi; S. Ghosh</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">290</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://theory.bio.uu.nl/immbio/sheets/College_7_juni_2.pdf"> <span id="translatedtitle">Polly Matzinger & Michel Oldstone Ohashi et <span class="hlt">al</span> Cell 1991, Oldstone et <span class="hlt">al</span> Cell 1991</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">of the clonotypes recognizing the pitopes that fail to induce tolerance. Otherwise the clo g Borghans et <span class="hlt">al</span>. [4] we. Otherwise the clone will be held <span class="hlt">al</span>. [4] we let be the fraction of clonotypes recognizing - p)(1-f)S . (4 . Following Borghans et <span class="hlt">al</span>. [4] we let be the fraction pe, i.e., = 1 - (1 - p)(1-f)S . emains tolerant when</p> <div class="credits"> <p class="dwt_author">Utrecht, Universiteit</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">291</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/41066273"> <span id="translatedtitle">Hydrogen solubility of two-phase (Ti 3<span class="hlt">Al</span> + Ti<span class="hlt">Al</span>) titanium aluminides</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">In this study, two-phase (αâ + γ) titanium aluminides were thermally charged with hydrogen, and the hydrogen solubility and the hydrogen evolution behavior were investigated by means of thermal desorption spectroscopy (TDS). Hydrogen solubility of two-phase (Tiâ<span class="hlt">Al</span> + Ti<span class="hlt">Al</span>) titanium aluminides occurred endothermically. A heat of solution for hydrogen dissolution in a Ti-50<span class="hlt">Al</span> alloy was estimated to be 36.4 kJ\\/mol</p> <div class="credits"> <p class="dwt_author">Akito Takasaki; Yoshio Furuya; Kozo Ojima; Youji Taneda</p> <p class="dwt_publisher"></p> <p class="publishDate">1995-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">292</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40433908"> <span id="translatedtitle">Martensitic transformation in CVD Ni<span class="hlt">Al</span> and (Ni,Pt)<span class="hlt">Al</span> bond coatings</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The martensitic phase transformation in single-phase ?-Ni<span class="hlt">Al</span> and (Ni,Pt)<span class="hlt">Al</span> coatings was investigated. After isothermal exposure to 1150 °C for 100 h, the ? phase in both types of coatings was transformed to a martensite phase during cooling to room temperature. Martensitic transformation was also observed in the (Ni,Pt)<span class="hlt">Al</span> bond coat with and without a YSZ top layer after thermal cycling</p> <div class="credits"> <p class="dwt_author">Y Zhang; J. A Haynes; B. A Pint; I. G Wright; W. Y Lee</p> <p class="dwt_publisher"></p> <p class="publishDate">2003-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">293</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/39757700"> <span id="translatedtitle">TEM studies of oxidized Ni<span class="hlt">Al</span> and Ni 3 <span class="hlt">Al</span> cross sections</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Cross sections of oxide scale\\/(Ni-<span class="hlt">Al</span>) intermetallics were prepared by a new method and studied using primarily transmission electron microscopy (TEM). The cross sections were prepared by encasing an oxidized metal specimen sandwich in a low-melting-temperature zinc alloy. Observations of oxidized zirconium-doped ß-Ni<span class="hlt">Al</span> cross sections revealed crystallographic voids beneath an adherent <span class="hlt">Al</span>2O3 scale. The oxide-metal interface was incoherent, but a high</p> <div class="credits"> <p class="dwt_author">J. Doychak; M. Rühle</p> <p class="dwt_publisher"></p> <p class="publishDate">1989-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">294</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19890001234&hterms=potential+curves&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dpotential%2Bcurves"> <span id="translatedtitle">The lowest ionization potentials of <span class="hlt">Al</span>2</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Potential curves for the lowest two electronic states (X 2 sigma g + and A 2 pi u) of <span class="hlt">Al</span>2(+) were computed using complete active space SCF/multireference CI wave functions and large Gaussian basis sets. The lowest observable vertical ionization potential (to <span class="hlt">Al</span>2(+) X 2 sigma g +) of the <span class="hlt">Al</span>2 X 3 pi u ground state is calculated to occur around 6.1 eV, in excellent agreement with the experimental range of 6.0 to 6.42 eV obtained in recent cluster ionization studies by Cox and co-workers. The second vertical ionization potential (to <span class="hlt">Al</span>2(+) A 2 pi u) occurs near 6.4 eV, also within the experimental range. The adiabatic IP of 5.90 eV is in good agreement with the value of 5.8 to 6.1 eV deduced by Hanley and co-workers from the difference in thresholds between collision induced dissociation processes of <span class="hlt">Al</span>3(+). The computed IP values are somewhat larger than those deduced from branching ratios in cluster fragmentation experiments by Jarrold and co-workers. The observation of an ionization threshold below 6.42 eV is shown to be incompatible with an <span class="hlt">Al</span>2 ground electronic state assignment of 3 sigma g -, but the separation between the two lowest states of <span class="hlt">Al</span>2 is so small that it is likely that both are populated in the experiments, so that this does not provide unambiguous support for the recent theoretical assignment of the ground state as 3 pi u.</p> <div class="credits"> <p class="dwt_author">Bauschlicher, Charles W., Jr.; Barnes, Leslie A.; Taylor, Peter R.</p> <p class="dwt_publisher"></p> <p class="publishDate">1988-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">295</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19890057866&hterms=potential+curves&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dpotential%2Bcurves"> <span id="translatedtitle">Lowest ionization potentials of <span class="hlt">Al</span>2</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Potential curves for the lowest two electronic states, X 2Sigma(+)g and A 2Pi(u), of <span class="hlt">Al</span>2(+) were computed using complete active space SCF/multireference CI wave functions and large Gaussian basis sets. The lowest observable vertical ionization potential, to <span class="hlt">Al</span>2(+) X 2Sigma(+)g, of the <span class="hlt">Al</span>2 X 3 Pi(u) ground state is calculated to occur around 6.1 eV, in excellent agreement with the experimental range of 6.0 to 6.42 eV obtained in recent cluster ionization studies by Cox and co-workers. The second vertical ionization potential, to <span class="hlt">Al</span>2(+) A 2Pi(u), occurs near 6.4 eV, also within the experimental range. The adiabatic IP of 5.90 eV is in good agreement with the value of 5.8 to 6.1 eV deduced by Hanley and co-workers from the difference in thresholds between collision induced dissociation processes of <span class="hlt">Al</span>3(+). The computed IP values are somewhat larger than those deduced from branching ratios in cluster fragmentation experiments by Jarrold and co-workers. The observation of an ionization threshold below 6.42 eV is shown to be incompatible with an <span class="hlt">Al</span>2 ground electronic state assignment of 3Sigma(-)g, but the separation between the two lowest states of <span class="hlt">Al</span>2 is so small that it is likely that both are populated in the experiments, so that this does not provide unambiguous support for the recent theoretical assignment of the ground state as 3Pi(u).</p> <div class="credits"> <p class="dwt_author">Bauschlicher, Charles W., Jr.; Barnes, Leslie A.; Taylor, Peter R.</p> <p class="dwt_publisher"></p> <p class="publishDate">1989-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">296</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/15870470"> <span id="translatedtitle">Analysis of the Candida albicans <span class="hlt">Als</span>2p and <span class="hlt">Als</span>4p adhesins suggests the potential for compensatory function within the <span class="hlt">Als</span> family.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">The <span class="hlt">ALS</span> (agglutinin-like sequence) gene family encodes eight large cell-surface glycoproteins. The work presented here focuses on <span class="hlt">Als</span>2p and <span class="hlt">Als</span>4p, and is part of a larger effort to deduce the function of each <span class="hlt">Als</span> protein. Both <span class="hlt">ALS</span>4 alleles were deleted from the Candida albicans genome and the phenotype of the mutant strain (<span class="hlt">als</span>4Delta/<span class="hlt">als</span>4Delta; named 2034) studied. Loss of <span class="hlt">Als</span>4p slowed germ tube formation of cells grown in RPMI 1640 medium and resulted in decreased adhesion of C. albicans to vascular endothelial cells. Loss of <span class="hlt">Als</span>4p did not affect adhesion to buccal epithelial cells, biofilm formation in a catheter model, or adhesion to or destruction of oral reconstituted human epithelium (RHE). Although deletion of one <span class="hlt">ALS</span>2 allele was achieved readily, a strain lacking the second allele was not identified despite screening thousands of transformants. The remaining <span class="hlt">ALS</span>2 allele was placed under control of the C. albicans MAL2 promoter to create an <span class="hlt">als</span>2Delta/PMAL2-<span class="hlt">ALS</span>2 strain (named 2342). Real-time RT-PCR analysis of strain 2342 grown in glucose-containing medium (non-inducing conditions) showed that although <span class="hlt">ALS</span>2 transcript levels were greatly reduced compared to wild-type cells, some <span class="hlt">ALS</span>2 transcript remained. The decreased <span class="hlt">ALS</span>2 expression levels were sufficient to slow germ tube formation in RPMI 1640 and Lee medium, reduce adhesion to vascular endothelial cells and to RHE, decrease RHE destruction, and impair biofilm formation. Growth of strain 2342 in maltose-containing medium (inducing conditions) restored the wild-type phenotype in all assays. Real-time RT-PCR analysis demonstrated that in maltose-containing medium, strain 2342 overexpressed <span class="hlt">ALS</span>2 compared to wild-type cells; however no overexpression phenotype was apparent. Microarray analysis revealed little transcriptional response to <span class="hlt">ALS</span>4 deletion, but showed twofold up-regulation of orf19.4765 in the glucose-medium-grown <span class="hlt">als</span>2Delta/PMAL2-<span class="hlt">ALS</span>2 strain. orf19.4765 encodes a protein with features of a glycosylated cell wall protein with similarity to Saccharomyces cerevisiae Ccw12p, although initial analysis suggested functional differences between the two proteins. Real-time RT-PCR measurement of <span class="hlt">ALS</span>2 and <span class="hlt">ALS</span>4 transcript copy number showed a 2.8-fold increase in <span class="hlt">ALS</span>2 expression in the <span class="hlt">als</span>4Delta/<span class="hlt">als</span>4Delta strain and a 3.2-fold increase in <span class="hlt">ALS</span>4 expression in the <span class="hlt">als</span>2Delta/PMAL2-<span class="hlt">ALS</span>2 strain, suggesting the potential for compensatory function between these related proteins. PMID:15870470</p> <div class="credits"> <p class="dwt_author">Zhao, X; Oh, S-H; Yeater, K M; Hoyer, L L</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-05-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">297</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2012SSCom.152.2078N"> <span id="translatedtitle">Chemical trend of superconducting transition temperature in hole-doped delafossite of Cu<span class="hlt">Al</span>O2, Ag<span class="hlt">Al</span>O2 and Au<span class="hlt">Al</span>O2</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">We have performed the first-principles calculations about the superconducting transition temperature Tc of hole-doped delafossite Cu<span class="hlt">Al</span>O2, Ag<span class="hlt">Al</span>O2 and Au<span class="hlt">Al</span>O2. Calculated Tc are about 50 K (Cu<span class="hlt">Al</span>O2), 40 K (Ag<span class="hlt">Al</span>O2) and 3 K(Au<span class="hlt">Al</span>O2) at maximum in the optimum hole-doping concentration. The low Tc of Au<span class="hlt">Al</span>O2 is attributed to the weak electron-phonon interaction caused by the low covalency and heavy atomic mass.</p> <div class="credits"> <p class="dwt_author">Nakanishi, Akitaka; Katayama-Yoshida, Hiroshi</p> <p class="dwt_publisher"></p> <p class="publishDate">2012-12-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">298</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014SurSc.624....1L"> <span id="translatedtitle">First-principle study of adhesion, wetting and bonding on <span class="hlt">Al/Al</span>3V(001) interface</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The adhesion, wetting, and bonding on fcc-<span class="hlt">Al</span>(001)/D022-<span class="hlt">Al</span>3V(001) interface were investigated using density functional calculations. Considering different terminations of <span class="hlt">Al</span>3V(001) (<span class="hlt">Al</span>- and <span class="hlt">Al</span> + V-terminated) and stacking sites (center-, hollow- and top-sites), six <span class="hlt">Al/Al</span>3V(001) models were calculated. For the models with same stacking site, <span class="hlt">Al</span> + V-terminated model has larger work of adhesion (Wad) than the <span class="hlt">Al</span>-terminated one. For the models with same termination, the work of adhesion decreases, and the interface energy (?int) increases as the order of top-, bridge- and center-sites. <span class="hlt">Al</span>-terminated-center-sited and <span class="hlt">Al</span> + V-terminated-center-sited models are more stable among six models. After complete structure relaxation, both models have the same epitaxial stacking style. Therefore, the both models can be regarded as of the same and most stable one (noted as CSI model), but separating along <span class="hlt">Al-Al</span> and <span class="hlt">Al-Al</span>+V inter-planes. Based on the perfect wetting and strong adhesion in CSI model, the heterogeneous nucleation of ?-<span class="hlt">Al</span> on <span class="hlt">Al</span>3V(001) was interpreted in terms of crystallography and thermodynamics. The interfacial bonding was discussed with analysis of valence electron density distribution and partial density of states (PDOS). The bonding is mainly contributed from <span class="hlt">Al</span>V covalent bonds and <span class="hlt">AlAl</span> metallic interactions.</p> <div class="credits"> <p class="dwt_author">Li, Jian; Qi, Yuning; Zhang, Ming; Zhou, Yong; Li, Xiao</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-06-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">299</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://hal.archives-ouvertes.fr/docs/00/67/69/13/PDF/GRL_2010_37_L20306.pdf"> <span id="translatedtitle">Elasticity of <span class="hlt">Al</span>FeO3 and Fe<span class="hlt">Al</span>O3 perovskite and postperovskite from firstprinciples calculations</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Elasticity of <span class="hlt">Al</span>FeO3 and Fe<span class="hlt">Al</span>O3 perovskite and postperovskite from firstprinciples calculations R constants tensor of perovskite and postperovskite with formulas <span class="hlt">Al</span>FeO3 and Fe<span class="hlt">Al</span>O3 in which Fe or <span class="hlt">Al</span> perovskite and postperovskite is associated with a site exchange, during which Fe from the interoctahedral</p> <div class="credits"> <p class="dwt_author">Paris-Sud XI, Université de</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">300</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://coolchips.sfsu.edu/LT_XXI-2.doc.pdf"> <span id="translatedtitle">Preparation and characterization of <span class="hlt">Al/Al</span>2O3/Cu SIN tunnel junctions microfabricated with a full wafer process</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Preparation and characterization of <span class="hlt">Al/Al</span>2O3/Cu SIN tunnel junctions microfabricated with a full at Storrs We have developed a "full wafer" process for producing <span class="hlt">Al/Al</span>2O3/Cu superconductor the "full wafer" process developed for Nb/<span class="hlt">Al</span> 2 O 3 /Nb superconductor-insulator-superconductor (SIS) devices</p> <div class="credits"> <p class="dwt_author">Neuhauser, Barbara</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a 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onClick='return showDiv("page_18");' href="#">18</a> <a onClick='return showDiv("page_19");' href="#">19</a> <a onClick='return showDiv("page_20");' href="#">20</a> <a onClick='return showDiv("page_21");' href="#">21</a> <a onClick='return showDiv("page_22");' href="#">22</a> <a onClick='return showDiv("page_23");' href="#">23</a> <a onClick='return showDiv("page_24");' href="#">24</a> <a onClick='return showDiv("page_25");' href="#">25</a> </span> </span> <a id="NextPageLink" onclick='return showDiv("page_17");' href="#" title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">301</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/616445"> <span id="translatedtitle">Long range order and vacancy properties in <span class="hlt">Al</span>-rich Fe{sub 3}<span class="hlt">Al</span> and Fe{sub 3}<span class="hlt">Al</span>(Cr) alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Neutron powder diffraction measurements have been carried out in situ from room temperature to about 100 C in Fe28<span class="hlt">Al</span> (28 at.% <span class="hlt">Al</span>), Fe32.5<span class="hlt">Al</span> (32.5 at.% <span class="hlt">Al</span>) and Fe28<span class="hlt">Al</span>15Cr (28 at.% <span class="hlt">Al</span>, 5 at.% Cr) alloys. X-ray diffraction and TEM studies provided supporting information. The data were analyzed to obtain information about the temperature dependence of the DO{sub 3} and B2 long range order parameters, the location of the Cr atoms and their effect on the ordering energies, and on the vacancy formation and migration properties in Fe28<span class="hlt">Al</span> and Fe32.5<span class="hlt">Al</span> alloys. The location of the ternary alloying addition in DO{sub 3} and B2 ordered <span class="hlt">Al</span>-rich Fe{sub 3}<span class="hlt">Al</span> is shown to be consistent with considerations of interatomic bond energies.</p> <div class="credits"> <p class="dwt_author">Kim, S.M. [AECL, Chalk River, Ontario (Canada). Chalk River Labs.] [AECL, Chalk River, Ontario (Canada). Chalk River Labs.; Morris, D.G. [Univ. of Neuchatel (Switzerland). Inst. of Structural Metallurgy] [Univ. of Neuchatel (Switzerland). Inst. of Structural Metallurgy</p> <p class="dwt_publisher"></p> <p class="publishDate">1998-05-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">302</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://arxiv.org/pdf/0804.0824.pdf"> <span id="translatedtitle">Evidence for High Tc Superconducting Transitions in Isolated <span class="hlt">Al</span>45- and <span class="hlt">Al</span>47- Nanoclusters</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Heat capacities measured for <span class="hlt">Al</span>45- and <span class="hlt">Al</span>47- nanoclusters have reproducible jumps at ~ 200 K. These jumps are consistent with theoretical predictions that some clusters with highly degenerate electronic states near the Fermi level will undergo a transition into a high Tc superconducting state. An analysis based on a theoretical treatment of pairing in <span class="hlt">Al</span>45- and <span class="hlt">Al</span>47- agrees well with the experimental data in both the value of the critical temperature and in the size and width of the jumps in the heat capacity.</p> <div class="credits"> <p class="dwt_author">Cao, Baopeng; Starace, Anne K; Ovchinnikov, Yurii N; Kresin, Vladimir Z; Jarrold, Martin F</p> <p class="dwt_publisher"></p> <p class="publishDate">2008-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">303</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19830003032&hterms=coal&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D80%26Ntt%3Dcoal"> <span id="translatedtitle">High temperature deformation of Ni<span class="hlt">Al</span> and Co<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The high temperature mechanical properties of the aluminides are reviewed with respect to their potential as high temperature structural materials. It is shown that Ni<span class="hlt">Al</span> and Co<span class="hlt">Al</span> are substantially stronger than the pure metals Ni and Co at high temperatures and approach the strength of some superalloys, particularly when those superalloys are tested in "weak" directions. The factors that limit and control the high temperature strengths of Ni<span class="hlt">Al</span> and Co<span class="hlt">Al</span> are examined to provide a basis for the development of intermetallic alloys of this type.</p> <div class="credits"> <p class="dwt_author">Nix, W. D.</p> <p class="dwt_publisher"></p> <p class="publishDate">1982-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">304</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014MMTB...45.1380P"> <span id="translatedtitle">-CaO Slags by <span class="hlt">Al</span> in Fe-<span class="hlt">Al</span>(-Si) Melts</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Kinetic models considering mass transport in, (i) metal phase only and (ii) both metal and slag phases (mixed control or two-phase mass transfer) were developed for the reduction of SiO2 in a SiO2-<span class="hlt">Al</span>2O3-CaO slag by <span class="hlt">Al</span> in an <span class="hlt">Al</span>-Fe melt. The models were validated with experiments of the reaction with Fe-<span class="hlt">Al</span> melt and SiO2-<span class="hlt">Al</span>2O3-CaO-MgOsat slags at 1873 K (1600 °C). The models predict that the rate of reaction is slower in the mixed control model because of the added resistance of slag phase mass transport. The mixed control becomes applicable when the slag contains low amounts of SiO2. In this case, when the initial <span class="hlt">Al</span> content in the metal increases, the normalized rate of reaction decreases. The increased <span class="hlt">Al</span> content in the metal retards the reaction due to the limited SiO2 provided to the reaction interface in the mixed control model. Sensitivity analyses were done using the models for the ratios of mass transfer coefficients of Si to <span class="hlt">Al</span>, and <span class="hlt">Al</span>2O3 to Si, along with slag density, which did not impose a significant effect.</p> <div class="credits"> <p class="dwt_author">Park, Jiwon; Sridhar, Seetharaman; Fruehan, Richard J.</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-08-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">305</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2010PhLA..374.3230Y"> <span id="translatedtitle">Glassy ferromagnetism in <span class="hlt">Al</span>-doped 4H-SiC: <span class="hlt">Al</span>Si-V complexes</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The recent observed glassy ferromagnetism in <span class="hlt">Al</span>-doped 4 H-SiC is investigated using first principles calculations. We find that the formation energy of V is significantly reduced by <span class="hlt">Al</span> atoms doped in SiC. The <span class="hlt">Al</span> Si- V complex induces a half-filled narrow a level in the band gap and contributes a net local moment of 1 ?. The exchange parameter J can be either positive or negative along different directions. Both the strong anisotropy of J and the correlation effects of the a level can lead to a glassy ferromagnetism in <span class="hlt">Al</span>-doped 4 H-SiC.</p> <div class="credits"> <p class="dwt_author">Yang, Mao; Shi, Jun-jie</p> <p class="dwt_publisher"></p> <p class="publishDate">2010-07-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">306</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920053767&hterms=Al2O3&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D50%26Ntt%3DAl2O3"> <span id="translatedtitle">Combustion synthesis of TiB2-<span class="hlt">Al</span>2O3-<span class="hlt">Al</span> composite materials</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The oxide-aluminum exothermic reduction reaction is presently used in the combustion-synthesis of ceramic/metal composites. An excess of <span class="hlt">Al</span> is used in the reacting materials, which rapidly generate enough heat to exceed <span class="hlt">Al</span>'s melting point. The molten <span class="hlt">Al</span> thus evolved is allowed to infiltrate the porous ceramic matrix as the exothermic reaction proceeds; this feature of the process turns the disadvantage of high porosity levels in combustion-synthesized materials into an advantage. Attention is given to the system obtained with 3TiO2 + 3B2O3 + (10-x)<span class="hlt">Al</span> starting materials.</p> <div class="credits"> <p class="dwt_author">Feng, H. J.; Moore, J. J.; Wirth, D. G.</p> <p class="dwt_publisher"></p> <p class="publishDate">1991-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">307</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/571807"> <span id="translatedtitle">Microstructure and strengthening of creep-tested cryomilled Ni<span class="hlt">Al-Al</span>N</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The B2 intermetallic Ni<span class="hlt">Al</span> is considered to be a prime candidate material for use as very high temperature structural components in gas turbine engines. The mechanical grinding of prealloyed Ni<span class="hlt">Al</span> powder in liquid nitrogen (cryomilling) results in an intermetallic matrix composite where micron sized particle free aluminide cores (grains) are surrounded by thin mantles comprised of nanometer sized <span class="hlt">Al</span>N particles and Ni<span class="hlt">Al</span> grains. Under high temperature, slow strain rate conditions both compressive and tensile creep testing have shown that the mechanical strength of hot extruded cryomilled Ni<span class="hlt">Al</span> approaches the levels exhibited by advanced Ni<span class="hlt">Al</span>-based single crystals and simple Ni-based superalloys. Transmission electron microscopy of cryomilled materials tested between 1,100 and 1,300 K revealed little, if any, dislocation structure within the mantle regions, while the Ni<span class="hlt">Al</span> cores contained subgrains and dislocation networks after testing at all strain rates between 10{sup {minus}4} and 10{sup {minus}8} s{sup {minus}1}. These and other microstructural observations suggest that creep strength is the result of a fine Ni<span class="hlt">Al</span> grain/subgrain size, the inability of dislocations to move through the mantle and stabilization of the microstructure by the <span class="hlt">Al</span>N particles.</p> <div class="credits"> <p class="dwt_author">Garg, A. [AYT, Cleveland, OH (United States); Whittenberger, J.D. [NASA Lewis Research Center, Cleveland, OH (United States); Luton, M.J. [Exxon Research and Engineering Co., East Annandale, NJ (United States)</p> <p class="dwt_publisher"></p> <p class="publishDate">1997-12-31</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">308</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.tau.ac.il/~gilast/PAPERS/Science2003reviewed.pdf"> <span id="translatedtitle">ported by Nomura et <span class="hlt">al</span>. (1) meets the on-</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">suited to AMLCD select transis- tor applications. Hoffman et <span class="hlt">al</span>. (3) and Carcia et <span class="hlt">al</span>. (4) have demonstrated on-to-off current ratios greater than 106. Moreover, Carcia et <span class="hlt">al</span>. (4) have fabricated ZnO trans</p> <div class="credits"> <p class="dwt_author">Ast, Gil</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">309</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www2.ece.ttu.edu/nanophotonics/papers/APL%20papers/AlGaN%20GaN%20AlN%20quantum-well%20field-effect%20transistors%20with%20highly%20resistive%20AlN%20epilayers.pdf"> <span id="translatedtitle"><span class="hlt">AlGaN/GaN/Al</span>N quantum-well field-effect transistors with highly resistive <span class="hlt">Al</span>N epilayers</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary"><span class="hlt">AlGaN/GaN/Al</span>N quantum-well field-effect transistors with highly resistive <span class="hlt">Al</span>N epilayers Z. Y. Fana 66506-2601 Received 23 November 2005; accepted 5 January 2006; published online 16 February 2006 <span class="hlt">AlGaN/GaN/Al</span>N quantum-well field-effect transistors have been demonstrated. By replacing a semi-insulating GaN epilayer</p> <div class="credits"> <p class="dwt_author">Jiang, Hongxing</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">310</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2004APS..MARD33006C"> <span id="translatedtitle">Photoemission from <span class="hlt">Al</span> Alloys during Tensile Deformation</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">We report simultaneous measurements of strain and photoelectron emission intensity from high purity <span class="hlt">Al</span> (1350), <span class="hlt">Al</span>-Mg (5052), <span class="hlt">Al</span>-Mn (3003), <span class="hlt">Al</span>-Cu (2024) and <span class="hlt">Al</span>-Mg-Si (6061) alloys under uniaxial tension due to pulsed excimer laser radiation (248-nm). The photoemission signals are sensitive to deformation-induced changes in surface morphology, including the formation of slip lines and slip bands. In the early stages of deformation (strain Â¡Ü 0.03), the photoemission intensity increases gradually in a nonlinear fashion. Depending on sample composition and heat treatment, the photoemission intensity subsequently grows linearly until the accumulated strain reaches about 0.20. Finally, the photoemission intensity increases parabolically until failure. The onset of strain localization corresponds to the transition from linear to parabolic growth. A constitutional model incorporating microstructure evolution and work-hardening during tensile deformation is proposed to qualitatively interpret the growth of the photoemission signals as a function of strain. The photoemission signals from the tested alloys are interpreted in terms of the effect of surface treatment, work function, microstructure, and composition on the development of dislocation structures during deformation.</p> <div class="credits"> <p class="dwt_author">Cai, Mingdong; Langford, Stephen; Levine, Lyle; Dickinson, Thomas</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-03-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">311</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/414032"> <span id="translatedtitle">Survey and alignment at the <span class="hlt">ALS</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">This paper describes survey and alignment at the Lawrence Berkeley National Laboratory`s Advanced Light Source (<span class="hlt">ALS</span>) accelerators from 1993 to 1995. The <span class="hlt">ALS</span> is a 1.0 - 1.9 GeV electron accelerator producing extremely bright synchrotron light in the UV and soft-X-ray wavelengths. At the <span class="hlt">ALS</span>, electrons are accelerated in a LINAC to 50 MeV, injected into a booster ring for further acceleration and finally injected into the storage ring. This is shown schematically in Figure 1. The storage ring, some 200 m in circumference, has been run with electron currents above 400 mA with lifetimes as high as 24 hours. The <span class="hlt">ALS</span> is a third generation light source and requires for efficient storage ring operation, magnets aligned to within 150 mm of their ideal position. To accomplish this a network of monuments was established and their positions measured with respect to one another. The data was reduced using GEONET`` and STAR*NET`` software. Using the monuments as reference points, magnet positions were measured and alignment confirmed using the Kem Electronic Coordinate Determination System (ECDS``). A number of other papers dealing with survey and alignment (S&A) at the <span class="hlt">ALS</span> have been written that may further elucidate some details of the methods and systems described in this paper.</p> <div class="credits"> <p class="dwt_author">Krebs, G.F.; Lauritzen, T.; Thur, W.</p> <p class="dwt_publisher"></p> <p class="publishDate">1995-11-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">312</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/603868"> <span id="translatedtitle">Tensile properties of Ni<span class="hlt">Al</span> bicrystals</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The intermetallic compound {beta}-Ni<span class="hlt">Al</span> continues to receive considerable attention in spite of its lack of room temperature toughness and high temperature strength. Although the dislocations are mobile at room temperature, the lack of a sufficient number of slip systems precludes significant elongation in single and polycrystalline Ni<span class="hlt">Al</span> except in single crystals under special conditions. In the case of polycrystals of stoichiometric Ni<span class="hlt">Al</span>, the room temperature fracture tends to be mostly intergranular; this has been related to the stresses that build up at the grain boundaries during plastic deformation due to the lack of active independent deformation mechanisms or the possibility that the grain boundaries are intrinsically weak. The present study was designed to establish the condition of grain boundary fracture by performing tensile tests at different temperatures and strain rates on bicrystals of Ni<span class="hlt">Al</span> containing natural boundaries produced by Bridgman growth. This approach was selected based on the previous work on Ni<span class="hlt">Al</span> bicrystals produced by diffusion bonding/brazing and Bridgman growth. In some cases, these boundaries were reportedly enriched in nickel although it is unclear, based on the limited atomistic modeling efforts to date, whether this is a result of sample processing or is a characteristic of this compound. Furthermore, the previous studies of slip behavior were performed in compression which is less suitable for examining the relative strength of the grain boundaries.</p> <div class="credits"> <p class="dwt_author">LeBleu, J.B. Jr.; Mei, P.R.; Levit, V.I.; Kaufman, M.J. [Univ. of Florida, Gainesville, FL (United States). Dept. of Materials Science and Engineering] [Univ. of Florida, Gainesville, FL (United States). Dept. of Materials Science and Engineering</p> <p class="dwt_publisher"></p> <p class="publishDate">1998-01-06</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">313</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25284449"> <span id="translatedtitle">Computational cogitation of cn @<span class="hlt">al</span>12 clusters.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">A variety of novel Cn <span class="hlt">Al</span>12 core-shell nanoclusters have been investigated using density functional calculations. A series of Cn cores (n=1-4) have been encapsulated by icosahedral <span class="hlt">Al</span>12 , with characteristic physical properties (energetics and stabilities, ionisation energies, electron affinities) calculated for each cluster. Other isomers, with the Cn moiety bound externally to the <span class="hlt">Al</span>12 shell, have also been studied. For both series, a peak in stability was found for n(C)=2, a characteristic that appears to be inextricably linked with the relaxation of the constituent parts upon dissociation. Analysis of trends for ionisation energies and electron affinities includes evaluation of contributions from the carbon and aluminium components, which highlights the effects of composition and morphology on cluster properties. PMID:25284449</p> <div class="credits"> <p class="dwt_author">Irving, Benjamin J; Naumkin, Fedor Y</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-01-12</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">314</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/434994"> <span id="translatedtitle">The mechanical properties of Fe<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Only in the last few years has progress been made in obtaining reproducible mechanical properties data for Fe<span class="hlt">Al</span>. Two sets of observations are the foundation of this progress. The first is that the large vacancy concentrations that exist in Fe<span class="hlt">Al</span> at high temperature are easily retained at low temperature and that these strongly affect the low-temperature mechanical properties. The second is that RT ductility is adversely affected by water vapor. Purpose of this paper is not to present a comprehensive overview of the mechanical properties of Fe<span class="hlt">Al</span> but rather to highlight our understanding of key phenomena and to show how an understanding of the factors which control the yield strength and fracture behavior has followed the discovery of the above two effects. 87 refs, 9 figs.</p> <div class="credits"> <p class="dwt_author">Baker, I. [Dartmouth Coll., Hanover, NH (United States); George, E.P. [Oak Ridge National Lab., TN (United States)</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-12-31</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">315</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/676870"> <span id="translatedtitle">Boron strengthening in Fe<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The effect of boron on the strength of B2-structured Fe<span class="hlt">Al</span> is considered as a function of composition, grain size and temperature. Boron does not affect the concentrations of antisite atoms or vacancies present, with the former increasing and the latter decreasing with increasing deviation from the stoichiometric composition. When vacancies are absent, the strength increase per at. % B per unit lattice strain, {Delta}{sigma}/({Delta}c x {epsilon}) increases with increasing aluminum concentration, but when vacancies are present (>45 at. % <span class="hlt">Al</span>), {Delta}{sigma}/({Delta}c x {epsilon}) decreases again. Boron increases grain size strengthening in Fe<span class="hlt">Al</span>. B strengthening is roughly independent of temperature up to the yield strength peak but above the point, when diffusion-assisted deformation occurs, boron strengthening increases dramatically.</p> <div class="credits"> <p class="dwt_author">Baker, I.; Li, X.; Xiao, H.; Klein, O.; Nelson, C. [Dartmouth Coll., Hanover, NH (United States). Thayer School of Engineering; Carleton, R.L.; George, E.P. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.</p> <p class="dwt_publisher"></p> <p class="publishDate">1998-11-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">316</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/10386051"> <span id="translatedtitle">[<span class="hlt">Al</span>-Biruni--a universal scientist].</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary"><span class="hlt">Al</span>-Biruni's was of Persian descent. He was born in Horesmiya and had studied mathematics, history and medicine. Acquiring knowledge from these sciences, he wrote an outstanding work on chronology of several nations and devoted it to Ziyarit ruler Kabus. He made a chronological overview of calendars from many nations, including Persians, Greeks, Egyptians, Jews, Melkitian and Nestorian Christians, Sabeyaans as well as the old Arabs. Data presented in the work, according to the later authors, were taken from very reliable sources. He was contemporary of Ibn-Sina, and thanks to their friendship, they have discussed very much miscellaneous topics. He belonged to the group of scholars, taken by Gaznevian Soultan Mahmud to a long journey to India. Afterwards <span class="hlt">Al</span>-Biruni wrote and published detailed work "Description of India"--a work on cultural history of India. Due to excellent abilities of <span class="hlt">Al</span>-Biruni as a philosopher and scholar, there are still significant and reliable notes about buddhistic philosophy, structure of castes and Brahmans' life style. In this <span class="hlt">Al</span>-Biruni's masterpiece, there are many comparative analysis of Suffism and certain Indian philosophical methods. <span class="hlt">Al</span>-Biruni's most important work is "Pharmacopoeia"--"Kitab <span class="hlt">al</span>-saydala", which brilliantly describes all medicaments. This work has been published in many languages. He also wrote few works on astronomy and astrology. In those works he has explained some astrological events through scientific approach in a such peculiar way that nobody has ever explained before. He was also interested in sciences like geology, mineralology, geography, mathematics, psychology and many others. PMID:10386051</p> <div class="credits"> <p class="dwt_author">Kujundzi?, E; Masi?, I</p> <p class="dwt_publisher"></p> <p class="publishDate">1999-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">317</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ipn2.epfl.ch/LNS/publications/papers/2006_Lehnert_SS.pdf"> <span id="translatedtitle">Nucleation of ordered Fe islands on <span class="hlt">Al</span>2O3/Ni3<span class="hlt">Al</span>(111) A. Lehnert a</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Nucleation of ordered Fe islands on <span class="hlt">Al</span>2O3/Ni3<span class="hlt">Al</span>(111) A. Lehnert a , A. Krupski b,c,*, S. Degen b the nucleation and stability of iron clusters on the <span class="hlt">Al</span>2O3/ Ni3<span class="hlt">Al</span>(111) surface as a function of coverage, it was also shown that metal deposition on <span class="hlt">Al</span>2O3/Ni3<span class="hlt">Al</span>(111) may lead to ordered cluster arrays [16</p> <div class="credits"> <p class="dwt_author">Brune, Harald</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">318</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://web.phys.ntu.edu.tw/nanomagnetism/eng/pdf/056-WCLin'sAPL.pdf"> <span id="translatedtitle">Controlled growth of Co nanoparticle assembly on nanostructured template <span class="hlt">Al</span>2O3/Ni<span class="hlt">Al</span>,,100...</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Controlled growth of Co nanoparticle assembly on nanostructured template <span class="hlt">Al</span>2O3/Ni<span class="hlt">Al</span>,,100... Wen, and alignment is demonstrated to be feasible on a nanostructured template <span class="hlt">Al</span>2O3/Ni<span class="hlt">Al</span> 100 . At 140­170 K, a slow to reveal the similar growth mode in the particle size and alignment, on the <span class="hlt">Al</span>2O3/Ni<span class="hlt">Al</span> 100 ,6 the detailed</p> <div class="credits"> <p class="dwt_author">Lin, Minn-Tsong</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">319</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/20653227"> <span id="translatedtitle">Nb3<span class="hlt">Al</span> Development for HEP Applications</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Recent developments in Nb3<span class="hlt">Al</span> strand for HEP applications are presented and discussed. The present state of available precursor is detailed. Two routes have been shown to lead to successful construction of MF Nb<span class="hlt">Al</span> composite wires. An extrusion method has so far produced the highest filament counts and smallest filament diameters, but requires more processing steps. A direct restack and draw approach has also been demonstrated which minimizes the number of processing steps while still leading to a high performance conductor. This latter route also allows for a lower cost per billet, potentially allowing the exploration of more process parameters.</p> <div class="credits"> <p class="dwt_author">Sumption, M.D.; Buta, F.; Collings, E.W. [Laboratories for Applied Superconductivity and Magnetism (LASM), MSE Dept, The Ohio State University, Columbus, OH 43210 (United States); Tomsic, M.; Phillips, J.; McFadden, K. [Hyper Tech Research Inc., Troy, OH 45373 (United States); Wu, X</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-06-28</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">320</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/10176774"> <span id="translatedtitle">The <span class="hlt">ALS</span> Storage Ring RF System</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The <span class="hlt">ALS</span> Storage Ring RF System is characterized by the use of the following features: (1) High power loading of two single cell cavities. (2) The use of a tubular ceramic input window employing aperture coupling. (3) The use of waveguide filters and matchers designed for HOM absorption. (4) A comprehensive HOM monitoring system. (5) The use of waveguide water-wedge loads for the magic tee and circulator loads. The results of cavity measurements and high power tests are reported together with the performance of the system during the commissioning and operation phases of the <span class="hlt">ALS</span> project. Plans for future window development are discussed.</p> <div class="credits"> <p class="dwt_author">Taylor, B.; Lo, C.C.; Baptiste, K.; Guigli, J.; Julian, J.</p> <p class="dwt_publisher"></p> <p class="publishDate">1993-05-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_15");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a 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class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_16");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return showDiv("page_2");' href="#">2</a> <a onClick='return showDiv("page_3");' href="#">3</a> <a onClick='return showDiv("page_4");' href="#">4</a> <a onClick='return showDiv("page_5");' href="#">5</a> <a onClick='return showDiv("page_6");' href="#">6</a> <a onClick='return showDiv("page_7");' href="#">7</a> <a onClick='return showDiv("page_8");' href="#">8</a> <a onClick='return 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title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">321</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/19006219"> <span id="translatedtitle">Giant magnetoresistance in Cu-Mn-<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Giant negative magnetoresistance (GMR) has been observed in melt-spun CuxMnyAlz ribbons (x=50-65, y=5-25, and z=25-30), with values up to 15% at 30 K. GMR was observed in all samples with off-stoichiometric composition which had a tweed structure consisting of a mixture of Mn-rich and Mn-poor Cu2Mn<span class="hlt">Al</span>-type (2:1:1) regions and\\/or of a fine mixture of magnetic 2:1:1 and nonmagnetic Cu9<span class="hlt">Al</span>4 (9:4)</p> <div class="credits"> <p class="dwt_author">L. Yiping; A. Murthy; G. C. Hadjipanayis; H. Wan</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">322</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://research.pbsci.ucsc.edu/chemistry/li/publications/2006_NanoLett_6_1468.pdf"> <span id="translatedtitle">Dopant-Free GaN/<span class="hlt">AlN/Al</span>GaN Radial Nanowire Heterostructures as High</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">, for the heterostructure. Field-effect transistors fabricated with ZrO2 dielectrics and metal top gates showed excellent for nanoscale electronic devices, including field-effect transistors (FETs),3-5 inverters,6 logic circuits,7Dopant-Free GaN/<span class="hlt">AlN/Al</span>GaN Radial Nanowire Heterostructures as High Electron Mobility Transistors</p> <div class="credits"> <p class="dwt_author">Li, Yat</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">323</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.era.lib.ed.ac.uk/handle/1842/5689"> <span id="translatedtitle">I have never touched her: the body in <span class="hlt">Al</span>-Ghazal <span class="hlt">Al</span>-‘Udhri </span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary"><span class="hlt">Al</span>-ghazal <span class="hlt">al</span>-‘udhri emerged as a remarkable literary genre in Arabic literature during the Umayyad period (7th-8th centuries CE). The leaders of this genre are famous poet-lovers who were known for their dramatic love ...</p> <div class="credits"> <p class="dwt_author">Alharthi, Jokha Mohammed</p> <p class="dwt_publisher"></p> <p class="publishDate">2011-02-09</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">324</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014JOM....66i1785S"> <span id="translatedtitle">Melting, Processing, and Properties of Disordered Fe-<span class="hlt">Al</span> and Fe-<span class="hlt">Al</span>-C Based Alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">This article presents a part of the research work conducted in our laboratory to develop lightweight steels based on Fe-<span class="hlt">Al</span> alloys containing 7 wt.% and 9 wt.% aluminum for construction of advanced lightweight ground transportation systems, such as automotive vehicles and heavy-haul truck, and for civil engineering construction, such as bridges, tunnels, and buildings. The melting and casting of sound, porosity-free ingots of Fe-<span class="hlt">Al</span>-based alloys was accomplished by a newly developed cost-effective technique. The technique consists of using a special flux cover and proprietary charging schedule during air induction melting. These alloys were also produced using a vacuum induction melting (VIM) process for comparison purposes. The effect of aluminum (7 wt.% and 9 wt.%) on melting, processing, and properties of disordered solid solution Fe-<span class="hlt">Al</span> alloys has been studied in detail. Fe-7 wt.% <span class="hlt">Al</span> alloy could be produced using air induction melting with a flux cover with the properties comparable to the alloy produced through the VIM route. This material could be further processed through hot and cold working to produce sheets and thin foils. The cold-rolled and annealed sheet exhibited excellent room-temperature ductility. The role of carbon in Fe-7 wt.% <span class="hlt">Al</span> alloys has also been examined. The results indicate that Fe-<span class="hlt">Al</span> and Fe-<span class="hlt">Al</span>-C alloys containing about 7 wt.% <span class="hlt">Al</span> are potential lightweight steels.</p> <div class="credits"> <p class="dwt_author">Satya Prasad, V. V.; Khaple, Shivkumar; Baligidad, R. G.</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-09-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">325</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://justice.uaa.alaska.edu/forum/30/3-4fall2013winter2014/303-4.fall2013winter2014.pdf"> <span id="translatedtitle">University of <span class="hlt">Al</span>AskA AnchorAge <span class="hlt">Al</span>AskA Justice Forum</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">and regulations that create hurdles to successful reintegration in seven areas: employment, public assistance to employment, public assistance, and parenting. Many of these institutionally created barriers (often referredUniversity of <span class="hlt">Al</span>AskA AnchorAge <span class="hlt">Al</span>AskA Justice Forum A PUblicAtion of the JUstice center Fall 2013</p> <div class="credits"> <p class="dwt_author">Pantaleone, Jim</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">326</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://justice.uaa.alaska.edu/forum/27/2summer2010/272summer2010.pdf"> <span id="translatedtitle">University of <span class="hlt">Al</span>AskA AnchorAge <span class="hlt">Al</span>AskA Justice Forum</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">assistance for low-income persons. (Municipal, state, and federal public defenders provide attorneysUniversity of <span class="hlt">Al</span>AskA AnchorAge <span class="hlt">Al</span>AskA Justice Forum A PUblicAtion of the JUstice center Summer 2010 states and the lack of at- torney assistance for a growing number of low-income citizens. In 1965</p> <div class="credits"> <p class="dwt_author">Pantaleone, Jim</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">327</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2006PMM...102..646N"> <span id="translatedtitle">Preparation, deformation, and failure of functional <span class="hlt">Al</span>-Sn and <span class="hlt">Al</span>-Sn-Pb nanocrystalline alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Changes in the structure, hardness, mechanical properties, and friction coefficient of <span class="hlt">Al</span>-30% Sn, <span class="hlt">Al</span>-15% Sn-25% Pb, and <span class="hlt">Al</span>-5% Sn-35% Pb (wt %) alloys subjected to severe plastic deformation by equal-channel angular pressing (with a force of 40 tonne) and by shear at a pressure of 5 GPa have been studied. The transition into the nanocrystalline state was shown to occur at different degrees of plastic deformation. The hardness exhibits nonmonotonic variations, namely, first it increases and subsequently decreases. The friction coefficient of the <span class="hlt">Al</span>-30% Sn, <span class="hlt">Al</span>-15% Sn-25% Pb, and <span class="hlt">Al</span>-5% Sn-35% Pb alloys quenched from the melt was found to be 0.33; the friction coefficients of these alloys in the submicrocrystalline state (after equal-channel angular pressing) equal 0.24, 0.32, and 0.35, respectively. The effect of disintegration into nano-sized powders was found to occur in the <span class="hlt">Al</span>-15% Sn-25% Pb, and <span class="hlt">Al</span>-5% Sn-35% Pb alloys after severe plastic deformation to ? = 6.4 and subsequent short-time holding.</p> <div class="credits"> <p class="dwt_author">Noskova, N. I.; Vil'Danova, N. F.; Filippov, Yu. I.; Churbaev, R. V.; Pereturina, I. A.; Korshunov, L. G.; Korznikov, A. V.</p> <p class="dwt_publisher"></p> <p class="publishDate">2006-12-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">328</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://eric.ed.gov/?q=Axioms&pg=5&id=EJ689425"> <span id="translatedtitle">An Alternative Perspective on von Winterfeldt et <span class="hlt">al.'s</span> (1997) Test of Consequence Monotonicity</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p class="result-summary">D. von Winterfeldt, N.-K. Chung, R. D. Luce, and Y. Cho (see record 1997-03378-008) provided several tests for consequence monotonicity of choice or judgment, using certainty equivalents of gambles. The authors reaxiomatized consequence monotonicity in a probabilistic framework and reanalyzed von Winterfeldt et <span class="hlt">al.'s</span> main experiment via a…</p> <div class="credits"> <p class="dwt_author">Ho, Moon-Ho R.; Regenwetter, Michel; Niederee, Reinhard; Heyer, Dieter</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">329</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2002yCat..33880704V"> <span id="translatedtitle">VizieR Online Data Catalog: <span class="hlt">Al</span> I & <span class="hlt">Al</span> II absolute transition probabilities (Vujnovic+, 2002)</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Relative intensity measurements of <span class="hlt">Al</span> I and <span class="hlt">Al</span> II spectral lines in the visible and ultraviolet spectral ranges are performed using a capacitively coupled high frequency double hollow electrode discharge. Branching ratios and intensity ratios within multiplets are determined. By using selected lifetimes absolute transition probabilities are calculated. (4 data files).</p> <div class="credits"> <p class="dwt_author">Vujnovic, V.; Blagoev, K.; Fuerboeck, C.; Neger, T.; Jaeger, H.</p> <p class="dwt_publisher"></p> <p class="publishDate">2002-05-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">330</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/1987PThPh..78..189H"> <span id="translatedtitle">Is Thieberger's Result Inconsistent with Stubbs et <span class="hlt">al.'s</span> One?</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">As to the presence of a fifth force Thieberger's outcome can be compatible with Stubbs et <span class="hlt">al.'s</span> one if the force is assumed to arise universal vector coupling to `oblique' fermion number defined by a linear combination of quark number and lepton number.</p> <div class="credits"> <p class="dwt_author">Hayashi, K.; Shirafuji, T.</p> <p class="dwt_publisher"></p> <p class="publishDate">1987-08-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">331</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://hal.archives-ouvertes.fr/docs/00/02/97/48/PS/clouet05.ps"> <span id="translatedtitle">ccsd00004518, Precipitation kinetics of <span class="hlt">Al</span> 3 Zr and <span class="hlt">Al</span> 3 Sc in</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">ccsd­00004518, version 2 ­ 21 Mar 2005 Precipitation kinetics of <span class="hlt">Al</span> 3 Zr and <span class="hlt">Al</span> 3 Sc in aluminum/Si#18;ege, 31-33, rue de la F#19;ed#19;eration, 75752 Paris cedex 15, France Abstract Precipitation dynamics, a mesoscopic modeling technique which describes the various stages of homogeneous precipitation</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">332</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/doepatents/biblio/872577"> <span id="translatedtitle">Electronic circuits having Ni<span class="hlt">Al</span> and Ni.sub.3 <span class="hlt">Al</span> substrates</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p class="result-summary">An electronic circuit component having improved mechanical properties and thermal conductivity comprises Ni<span class="hlt">Al</span> and/or Ni.sub.3 <span class="hlt">Al</span>, upon which an alumina layer is formed prior to applying the conductive elements. Additional layers of copper-aluminum alloy or copper further improve mechanical strength and thermal conductivity.</p> <div class="credits"> <p class="dwt_author">Deevi, Seetharama C. (Midlothian, VA); Sikka, Vinod K. (Oak Ridge, TN)</p> <p class="dwt_publisher"></p> <p class="publishDate">1999-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">333</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/21690942"> <span id="translatedtitle"><span class="hlt">Al</span> compositional inhomogeneity of <span class="hlt">Al</span>GaN epilayer with a high <span class="hlt">Al</span> composition grown by metal-organic chemical vapour deposition.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">The <span class="hlt">Al</span> compositional distribution of <span class="hlt">Al</span>GaN is investigated by cathodoluminescence (CL). Monochromatic CL images and CL spectra reveal a lateral <span class="hlt">Al</span> compositional inhomogeneity, which corresponds to surface hexagonal patterns. Cross-sectional CL images show a relatively uniform <span class="hlt">Al</span> compositional distribution in the growth direction, indicating columnar growth mode of <span class="hlt">Al</span>GaN films. In addition, a thin <span class="hlt">Al</span>GaN layer with lower <span class="hlt">Al</span> composition is grown on top of the buffer <span class="hlt">Al</span>N layer near the bottom of the <span class="hlt">Al</span>GaN epilayer because of the larger lateral mobility of Ga adatoms on the growth surface and their accumulation at the grain boundaries. PMID:21690942</p> <div class="credits"> <p class="dwt_author">Wang, X L; Zhao, D G; Jiang, D S; Yang, H; Liang, J W; Jahn, U; Ploog, K</p> <p class="dwt_publisher"></p> <p class="publishDate">2007-04-30</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">334</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014SeScT..29i5011Z"> <span id="translatedtitle">Analysis of interface trap states in In<span class="hlt">AlN/Al</span>N/GaN heterostructures</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Gate-source frequency-dependent capacitance and conductance measurements were performed on the In0.17<span class="hlt">Al</span>0.83N/<span class="hlt">Al</span>N/GaN heterostructure field-effect transistor with side-Ohmic contacts to study the characteristics of trap states at the interface between In<span class="hlt">Al</span>N and GaN. The values of interface trap state density and time constant were determined to be (0.96-3.36) × 1013 cm-2 eV-1 and (0.29-1.61) ?s, respectively. We calculated the strain in the In<span class="hlt">Al</span>N barrier layer under the gate and found that the In<span class="hlt">Al</span>N barrier layer was compressively strained with the in-plane strain of 1.31%. This is a possible reason for such a high interface trap state density which is not as low as supposed in the lattice-matched heterostructures.</p> <div class="credits"> <p class="dwt_author">Zhou, Yang; Lin, Zhaojun; Luan, Chongbiao; Zhao, Jingtao; Yang, Qihao; Yang, Ming; Wang, Yutang; Feng, Zhihong; Lv, Yuanjie</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-09-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">335</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/21013666"> <span id="translatedtitle">Intersubband absorption in <span class="hlt">AlN/GaN/Al</span>GaN coupled quantum wells</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary"><span class="hlt">AlN/GaN/Al</span>GaN coupled quantum wells grown by molecular beam epitaxy have been developed and characterized via intersubband absorption spectroscopy. In these structures, an <span class="hlt">Al</span>GaN layer of sufficiently low <span class="hlt">Al</span> content is used to achieve strong interwell coupling without the need for ultrathin inner barriers. At the same time, <span class="hlt">Al</span>N is used in the outer barriers to provide the large quantum confinement required for near-infrared intersubband transitions. The composition of the inner barriers also provides a continuously tunable parameter to control the coupling strength. Double intersubband absorption peaks are measured in each sample, at photon energies in good agreement with theoretical expectations.</p> <div class="credits"> <p class="dwt_author">Driscoll, Kristina; Bhattacharyya, Anirban; Moustakas, Theodore D.; Paiella, Roberto; Zhou, Lin; Smith, David J. [Department of Electrical and Computer Engineering and Photonics Center, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215 (United States); Department of Physics and School of Materials, Arizona State University, Tempe, Arizona 85287 (United States)</p> <p class="dwt_publisher"></p> <p class="publishDate">2007-10-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">336</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19980210984&hterms=ajo&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dajo"> <span id="translatedtitle">CVD Fiber Coatings for <span class="hlt">Al</span>2O3/Ni<span class="hlt">Al</span> Composites</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">While sapphire-fiber-reinforced nickel aluminide (<span class="hlt">Al</span>2O3/Ni<span class="hlt">Al</span>) composites are an attractive candidate for high-temperature structures, the significant difference in the coefficient of thermal expansion between the Ni<span class="hlt">Al</span> matrix and the sapphire fiber creates substantial residual stresses in the composite. This study seeks to produce two fiber-coating systems with the potential to reduce the residual stresses in the sapphire/Ni<span class="hlt">Al</span> composite system. Chemical vapor deposition (CVD) was used to produce both the compensating and compliant-fiber coatings for use in sapphire/Ni<span class="hlt">Al</span> composites. A special reactor was designed and built to produce the FGM and to handle the toxic nickel precursors. This process was successfully used to produce 500-foot lengths of fiber with coating thicknesses of approximately 3 microns, 5 microns, and 10 microns.</p> <div class="credits"> <p class="dwt_author">Boss, Daniel E.</p> <p class="dwt_publisher"></p> <p class="publishDate">1995-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">337</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/5188197"> <span id="translatedtitle"><span class="hlt">Al</span>/sub 2/O/sub 3/ adherence on CoCr<span class="hlt">Al</span> alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Adherence of protective oxides on NiCr<span class="hlt">Al</span> and CoCr<span class="hlt">Al</span> superalloys has been promoted by a dispersion of a highly oxygen reactive element or its oxide being produced within the protection system. Two aspects of this subject are investigated here: the use of <span class="hlt">Al</span>/sub 2/O/sub 3/ as both the dispersion and protective oxide; and the production of an HfO/sub 2/ dispersion while simultaneously aluminizing the alloy. It was found that an <span class="hlt">Al</span>/sub 2/O/sub 3/ dispersion will act to promote the adherence of an external scale of <span class="hlt">Al</span>/sub 2/O/sub 3/ to a degree comparable to previously tested dispersions and an HfO/sub 2/ dispersion comparable to that produced by a Rhines pack treatment is produced during aluminization.</p> <div class="credits"> <p class="dwt_author">Kingsley, L.M.</p> <p class="dwt_publisher"></p> <p class="publishDate">1980-04-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">338</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2012JTePh..57..840P"> <span id="translatedtitle">Properties and structure of oxidized coatings deposited onto <span class="hlt">Al</span>-Cu and <span class="hlt">Al</span>-Mg alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The results of new studies of creating protective oxide coatings based on <span class="hlt">Al</span>2O3 (Si, Mn) and deposited onto aluminum alloys using electrolyte-plasma oxidation are presented. An analysis is performed by scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS), X-ray diffraction, Rutherford backscattering of 4He+ and protons, nanoindentation, scratching, friction coefficient measurements, and acoustic emission measurements. The results demonstrate that the deposited coatings have a high quality, hardness, and wear resistance and a low thermal diffusivity. Apart from <span class="hlt">Al</span>2O3, the coatings are found to have Si, Mn, C, and Ca. The stoichiometry of the coatings is determined. The density and hardness of the coatings are close to those of ?-<span class="hlt">Al</span>2O3 in the coating on an <span class="hlt">Al</span>-Cu (D-16) substrate, and these values of the coating on an <span class="hlt">Al</span>-Mg (S006) are lower by a factor of 1.5.</p> <div class="credits"> <p class="dwt_author">Pogrebnyak, A. D.; Kylyshkanov, M. K.; Tyurin, Yu. N.; Kaverina, A. Sh.; Yakushchenko, I. V.; Borisenko, A. A.; Postol'ny, B. A.; Kulik, I. A.</p> <p class="dwt_publisher"></p> <p class="publishDate">2012-06-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">339</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920058951&hterms=High+compressive+stresses&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3DHigh%2Bcompressive%2Bstresses"> <span id="translatedtitle">1400 and 1500 K Compressive Creep Properties of an Ni<span class="hlt">Al/Al</span>N Composite</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Compressive creep properties of an Ni<span class="hlt">Al/Al</span>N(p) composite produced by a reaction milling process were investigated at 1400 and 1500 K and at slow strain rates, to investigate the relative strength of this composite at high temperatures, and to determine if the consolidation technique affects the 1400 K creep properties. Results indicate that the stress exponent of the Ni<span class="hlt">Al/Al</span>N(p) composite was similar to that for unreinforced Ni<span class="hlt">Al</span>. However, the activation energy for the composite was found to be more than twice that measured in the unreinforced matrix. Oxidation did not affect the composite at 1400 K, but a significant attack was observed in a sample subjected to fast deformation at 1500 K.</p> <div class="credits"> <p class="dwt_author">Whittenberger, J. D.; Arzt, Eduard; Luton, Michael J.</p> <p class="dwt_publisher"></p> <p class="publishDate">1992-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">340</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=20100042390&hterms=Al2O3&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DAl2O3"> <span id="translatedtitle">Formation of gamma'-Ni3<span class="hlt">Al</span> via the Peritectoid Reaction: gamma plus beta (+<span class="hlt">Al</span>2O3) equals gamma'(+<span class="hlt">Al</span>2O3)</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The activities of <span class="hlt">Al</span> and Ni were measured using multi-cell Knudsen effusion-cell mass spectrometry (multi-cell KEMS), over the composition range 8 - 32 at.%<span class="hlt">Al</span> and temperature range T = 1400 - 1750 K in the Ni-<span class="hlt">Al</span>-O system. These measurements establish that equilibrium solidification of gamma'-Ni3<span class="hlt">Al</span>-containing alloys occurs by the eutectic reaction, L (+ <span class="hlt">Al</span>2O3) = gamma + beta (+ <span class="hlt">Al</span>2O3), at 1640 plus or minus 1 K and a liquid composition of 24.8 plus or minus 0.2 at.%<span class="hlt">Al</span> (at an unknown oxygen content). The {gamma + beta + <span class="hlt">Al</span>2O3} phase field is stable over the temperature range 1633 - 1640 K, and gamma'-Ni3<span class="hlt">Al</span> forms via the peritectiod, gamma + beta (+ <span class="hlt">Al</span>2O3) = gamma'(+ <span class="hlt">Al</span>2O3), at 1633 plus or minus 1 K. This behavior is inconsistent with the current Ni-<span class="hlt">Al</span> phase diagram and a new diagram is proposed. This new Ni-<span class="hlt">Al</span> phase diagram explains a number of unusual steady state solidification structures reported previously and provides a much simpler reaction scheme in the vicinity of the gamma'-Ni3<span class="hlt">Al</span> phase field.</p> <div class="credits"> <p class="dwt_author">Copland, Evan</p> <p class="dwt_publisher"></p> <p class="publishDate">2008-01-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_16");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" 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<a onClick='return showDiv("page_6");' href="#">6</a> <a onClick='return showDiv("page_7");' href="#">7</a> <a onClick='return showDiv("page_8");' href="#">8</a> <a onClick='return showDiv("page_9");' href="#">9</a> <a onClick='return showDiv("page_10");' href="#">10</a> <a onClick='return showDiv("page_11");' href="#">11</a> <a onClick='return showDiv("page_12");' href="#">12</a> <a onClick='return showDiv("page_13");' href="#">13</a> <a onClick='return showDiv("page_14");' href="#">14</a> <a onClick='return showDiv("page_15");' href="#">15</a> <a onClick='return showDiv("page_16");' href="#">16</a> <a onClick='return showDiv("page_17");' href="#">17</a> <a style="font-weight: bold;">18</a> <a onClick='return showDiv("page_19");' href="#">19</a> <a onClick='return showDiv("page_20");' href="#">20</a> <a onClick='return showDiv("page_21");' href="#">21</a> <a onClick='return showDiv("page_22");' href="#">22</a> <a onClick='return showDiv("page_23");' href="#">23</a> <a onClick='return showDiv("page_24");' href="#">24</a> <a onClick='return showDiv("page_25");' href="#">25</a> </span> </span> <a id="NextPageLink" onclick='return showDiv("page_19");' href="#" title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">341</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=20080047352&hterms=Al2O3&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DAl2O3"> <span id="translatedtitle">Formation of gamma(sup prime)-Ni3<span class="hlt">Al</span> via the Peritectoid Reaction: gamma + beta (+ <span class="hlt">Al</span>2O3)=gamma(sup prime)(+ <span class="hlt">Al</span>2O3)</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The activities of <span class="hlt">Al</span> and Ni were measured using multi-cell Knudsen effusion-cell mass spectrometry (multi-cell KEMS), over the composition range 8-32 at.%<span class="hlt">Al</span> and temperature range T=1400-1750 K in the Ni-<span class="hlt">Al</span>-O system. These measurements establish that equilibrium solidification of gamma(sup prime)-Ni3<span class="hlt">Al</span>-containing alloys occurs by the eutectic reaction, L (+ <span class="hlt">Al</span>2O3)=gamma + Beta(+ <span class="hlt">Al</span>2O3), at 1640 +/- 1 K and a liquid composition of 24.8 +/- 0.2 at.%<span class="hlt">al</span> (at an unknown oxygen content). The {gamma + Beta (+<span class="hlt">Al</span>2O3} phase field is stable over the temperature range 1633-1640 K, and gamma(sup prime)-Ni3<span class="hlt">Al</span> forms via the peritectoid, gamma + Beta (+ <span class="hlt">Al</span>2O3)=gamma(sup prime) (+ <span class="hlt">Al</span>2O3), at 1633 +/- 1 K. This behavior is consistent with the current Ni-<span class="hlt">Al</span> phase diagram and a new diagram is proposed. This new Ni-<span class="hlt">Al</span> phase diagram explains a number of unusual steady-state solidification structures reported previously and provides a much simpler reaction scheme in the vicinity of the gamma(sup prime)-Ni2<span class="hlt">Al</span> phase field.</p> <div class="credits"> <p class="dwt_author">Copeland, Evan</p> <p class="dwt_publisher"></p> <p class="publishDate">2008-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">342</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://mitralab.org/_uploads/partha.pdf"> <span id="translatedtitle">Partha P. Mitra's Publications (Erlich, Mitra et <span class="hlt">al</span>. 2008; Saar and Mitra 2008; DeCoteau, Thorn et <span class="hlt">al</span>. 2007; DeCoteau,</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Partha P. Mitra's Publications (Erlich, Mitra et <span class="hlt">al</span>. 2008; Saar and Mitra 2008; DeCoteau, Thorn et <span class="hlt">al</span>. 2007; DeCoteau, Thorn et <span class="hlt">al</span>. 2007; Lin, Bohland et <span class="hlt">al</span>. 2007; Mitra 2007; Mitra and Bokil 2007; Valente, Golani et <span class="hlt">al</span>. 2007; Valente, Wang et <span class="hlt">al</span>. 2007; Andrews, Saar et <span class="hlt">al</span>. 2006; Bokil, Purpura et <span class="hlt">al</span></p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">343</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/doepatents/biblio/87741"> <span id="translatedtitle">Ternary Dy-Er-<span class="hlt">Al</span> magnetic refrigerants</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p class="result-summary">A ternary magnetic refrigerant material comprising (Dy{sub 1{minus}x}Er{sub x})<span class="hlt">Al</span>{sub 2} for a magnetic refrigerator using the Joule-Brayton thermodynamic cycle spanning a temperature range from about 60K to about 10K, which can be adjusted by changing the Dy to Er ratio of the refrigerant. 29 figs.</p> <div class="credits"> <p class="dwt_author">Gschneidner, K.A. Jr.; Takeya, Hiroyuki</p> <p class="dwt_publisher"></p> <p class="publishDate">1995-07-25</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">344</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://eric.ed.gov/?q=progression&pg=6&id=EJ869605"> <span id="translatedtitle">Kinematics of Disease Progression in Bulbar <span class="hlt">ALS</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p class="result-summary">The goal of this study was to investigate the deterioration of lip and jaw movements during speech longitudinally in three individuals diagnosed with bulbar amyotrophic lateral sclerosis (<span class="hlt">ALS</span>). The study was motivated by the need to understand the relationship between physiologic changes in speech movements and clinical measures of speech…</p> <div class="credits"> <p class="dwt_author">Yunusova, Yana; Green, Jordan R.; Lindstrom, Mary J.; Ball, Laura J.; Pattee, Gary L.; Zinman, Lorne</p> <p class="dwt_publisher"></p> <p class="publishDate">2010-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">345</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/503734"> <span id="translatedtitle">Bierman {ital et <span class="hlt">al</span>.}Reply:</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">reply to the Comment by C.H.Dasso et <span class="hlt">al</span>., Phys. Rev. Lett. 78,XXX(1997). A Reply to the Comment by C.H. Dasso and J. Fern{acute a}ndez-Niello. {copyright} {ital 1997} {ital The American Physical Society}</p> <div class="credits"> <p class="dwt_author">Bierman, J.D.; Chan, P.; Liang, J.F.; Kelly, M.P.; Sonzogni, A.A.; Vandenbosch, R. [Nuclear Physics Laboratory University of Washington Seattle, Washington 98195 (United States)] [Nuclear Physics Laboratory University of Washington Seattle, Washington 98195 (United States)</p> <p class="dwt_publisher"></p> <p class="publishDate">1997-05-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">346</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/21111103"> <span id="translatedtitle">Discussion: 'Congenital toxoplasmosis' by Berrébi et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">In the roundtable that follows, clinicians discuss a study published in this issue of the Journal in light of its methodology, relevance to practice, and implications for future research. Article discussed: Berrébi A, Assouline C, Bessières M-H, et <span class="hlt">al</span>. Long-term outcome of children with congenital toxoplasmosis. Am J Obstet Gynecol 2010;203:552.e1-6. PMID:21111103</p> <div class="credits"> <p class="dwt_author">Macones, George A; McNamara, Jennifer; Wallenstein, Matthew; Squires, Kate</p> <p class="dwt_publisher"></p> <p class="publishDate">2010-12-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">347</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://euro.ecom.cmu.edu/people/faculty/mshamos/7702541.pdf"> <span id="translatedtitle">(12) United States Patent Black et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Alamos, New Mexico. After one test explos:ion, two atomic .bombs: were dropped on the Japanese cities of Hiroshima (6 Aug 1945) and Nagasaki (9 _:Aug 1945); the bomb dropped on - .Hiroshima was as. powerful as metric tons of TNT, that on equivalent to 22.000 metrie tOI"ll The USSR first detbnated <span class="hlt">al</span>'l atomic 1949</p> <div class="credits"> <p class="dwt_author">Shamos, Michael I.</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">348</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://physics.nyu.edu/grierlab/US8791985.pdf"> <span id="translatedtitle">(12) United States Patent Grier et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">(12) United States Patent Grier et <span class="hlt">al</span>. US008791985B2 US 8,791,985 B2 Jul. 29, 2014 (10) Patent N0.: (45) Date of Patent: (54) (75) (73) (21) (22) (86) (87) (65) (60) (51) (52) TRACKING to any disclaimer, the term ofthis patent is extended or adjusted under 35 U.S.C. 154(b) by 744 days. 12</p> <div class="credits"> <p class="dwt_author">Grier, David</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">349</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://physics.nyu.edu/grierlab/US8502132.pdf"> <span id="translatedtitle">(12) United States Patent Grier et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">(12) United States Patent Grier et <span class="hlt">al</span>. US008502132B2 US 8,502,132 B2 Aug. 6, 2013 (10) Patent N0.: (45) Date of Patent: (54) (75) (73) (*) (21) (22) (65) (62) (60) (51) (52) MANIPULATION OF OBJECTS) Assignee: New York University, NeW York, NY (Us) Notice: Subject to any disclaimer, the term ofthis patent</p> <div class="credits"> <p class="dwt_author">Grier, David</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">350</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/doepatents/biblio/869994"> <span id="translatedtitle">Ternary Dy-Er-<span class="hlt">Al</span> magnetic refrigerants</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p class="result-summary">A ternary magnetic refrigerant material comprising (Dy.sub.1-x Er.sub.x)<span class="hlt">Al</span>.sub.2 for a magnetic refrigerator using the Joule-Brayton thermodynamic cycle spanning a temperature range from about 60K to about 10K, which can be adjusted by changing the Dy to Er ratio of the refrigerant.</p> <div class="credits"> <p class="dwt_author">Gschneidner, Jr., Karl A. (Ames, IA); Takeya, Hiroyuki (Ibaraki, JP)</p> <p class="dwt_publisher"></p> <p class="publishDate">1995-07-25</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">351</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/43093701"> <span id="translatedtitle">Superoutburst Photometry of <span class="hlt">AL</span> Comae Berenices</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Photometric observations obtained during the 1995 April - May superoutburst of the dwarf nova <span class="hlt">AL</span> Comae Berenices are presented. This star shows rare, large-amplitude outbursts, the last definitely seen in 1975. During the 1995 outburst, as with that of 1961, there was a sharp, two-magnitude temporary minimum in the outburst light curve at about 28 days after maximum tight. We</p> <div class="credits"> <p class="dwt_author">Steve B. Howell; James De Young; Janet A. Mattei; Grant Foster; Paula Szkody; John K. Cannizzo; Gary Walker; Erik Fierce</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">352</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/23114496"> <span id="translatedtitle">Novel <span class="hlt">Al</span>-based FLP systems.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary"><span class="hlt">Al</span>/P based frustrated Lewis pairs (FLPs) having coordinatively unsaturated aluminium and phosphorus atoms in a single molecule were obtained on a multigram scale by hydroalumination of alkynylphosphines. Steric shielding prevented the formation of adducts and the quenching of the conflicting Lewis acidic and basic functionalities. These FLPs reacted with terminal alkynes by C-H bond cleavage with the protons bonded to phosphorus and the alkynido groups coordinated to aluminium. Alternatively, a five-membered heterocycle was formed by C?C triple bond activation. Similar heterocycles resulted from the reversible coordination of carbon dioxide. Particularly interesting is their unique propensity to react as effective ion pair receptors for the complexation of alkali metal hydrides and their capability to activate such ionic hydrides as phase transfer catalysts. Sterically less shielded compounds gave dimers via <span class="hlt">Al</span>-P interactions. These compounds are still active as masked FLPs and form complexes with carbon dioxide or phenyl isocyanate. Alternative routes gave methylene bridged <span class="hlt">Al</span>-P compounds which were also shown to coordinate CO2. Bimolecular systems exhibit similar properties. They activate terminal alkynes and isobutene or reduce CO2 to methanol and carbon monoxide. Hydroalumination of ynamines proved to be an excellent method for the generation of <span class="hlt">Al</span>/N based Lewis pairs. These compounds were shown to activate phenylethyne reversibly or to undergo insertion reactions with carbodiimide. The constitution of the latter products is determined by cooperative interactions between aluminium and nitrogen. PMID:23114496</p> <div class="credits"> <p class="dwt_author">Uhl, Werner; Würthwein, Ernst-Ulrich</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">353</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/30138316"> <span id="translatedtitle">Die intravenöse Eisenbelastung <span class="hlt">als</span> Funktionsprobe des RES</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Zusammenfassung Intravenös injiziertes Kolloideisen wird schnell aus der Blutbahn eliminiert und im RES deponiert. Die Geschwindigkeit dieses Eisenabstroms aus dem zirkulierenden Blut in das Gewebe läßt sich am Abfall der Serumeisenkonzentration bestimmen und für einen bestimmten Zeitraum nach der Eisenapplikation <span class="hlt">als</span> Halbwertzeit angeben. Sie beträgt normalerweise 40 bis 55 Minuten, ist bei entzündlichen Alterationen und bei Hyperplasien des RES stark</p> <div class="credits"> <p class="dwt_author">I. Hoppe; W. Götte; C. Demke; E. Jahn; K. Schweikart; H. Overkamp</p> <p class="dwt_publisher"></p> <p class="publishDate">1961-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">354</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19720000526&hterms=molten+salt+battery&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dmolten%2Bsalt%2Bbattery"> <span id="translatedtitle"><span class="hlt">Al</span>/Cl2 molten salt battery</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Molten salt battery has been developed with theoretical energy density of 5.2 j/kg (650 W-h/lb). Battery, which operates at 150 C, can be used in primary mode or as rechargeable battery. Battery has aluminum anode and chlorine cathode. Electrolyte is mixture of <span class="hlt">Al</span>Cl3, NaCl, and some alkali metal halide such as KCl.</p> <div class="credits"> <p class="dwt_author">Giner, J.</p> <p class="dwt_publisher"></p> <p class="publishDate">1972-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">355</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://sigpubs.biostr.washington.edu/archive/00000160/01/3937Rickard.pdf"> <span id="translatedtitle">MEDINFO 2004 M. Fieschi et <span class="hlt">al</span>. (Eds)</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">420 MEDINFO 2004 M. Fieschi et <span class="hlt">al</span>. (Eds) Amsterdam: IOS Press © 2004 IMIA. All rights reserved the physical organization of the human body [3]. Its concept domain encom- passes anatomical entities ranging system. Our intent with the FMA is to make anatomical information available in a machine-underst</p> <div class="credits"> <p class="dwt_author">Washington at Seattle, University of</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">356</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://cisoft.usc.edu/assets/023/86281.pdf"> <span id="translatedtitle">Nada <span class="hlt">Al</span>-Alusi Torrey Pines High</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Students Nada <span class="hlt">Al</span>-Alusi Torrey Pines High Triana Anderson Lowell High Catherine Badart Holy Names Academy Kitae Bae Torrey Pines High Marika Buchholz Louisiana School for Math, Science, and the Arts Royce Temitope Olabinjo Elkins High School Anshul Ramachandran Monta Vista High Daniel Schneller Saint Louis</p> <div class="credits"> <p class="dwt_author">Shahabi, Cyrus</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">357</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://cisoft.usc.edu/assets/023/86261.pdf"> <span id="translatedtitle">Nada <span class="hlt">Al</span>-Alusi Torrey Pines High</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Students Nada <span class="hlt">Al</span>-Alusi Torrey Pines High Triana Anderson Lowell High Catherine Badart Holy Names Academy Kitae Bae Torrey Pines High Marika Buchholz Louisiana School for Math, Science, and the Arts Royce Temitope Olabinjo Elkins High School Anshul Ramachandran Monte Vista High Daniel Schneller Saint Louis</p> <div class="credits"> <p class="dwt_author">Shahabi, Cyrus</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">358</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://spo.nwr.noaa.gov/olo6thedition/24--Unit%2013.pdf"> <span id="translatedtitle"><span class="hlt">AL</span> ASK A SALMON alaska Salmon</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">189 <span class="hlt">AL</span> ASK A SALMON UNIT 13 alaska Salmon INTRODUCTION Pacific salmon have played an important and pivotal role in the history of Alaska. Salmon, along with mining, timber, and furs, were the keystone now, the abundant salmon resources of this region continue to shape much of the con- temporary lives</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">359</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/23030513"> <span id="translatedtitle">Clinical epidemiology of <span class="hlt">ALS</span> in Liguria, Italy.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Our objective was to assess the incidence and trends of amyotrophic lateral sclerosis (<span class="hlt">ALS</span>) in Liguria, a north-west region of Italy, utilizing a prospective design. Liguria (1,615,064 residents in 2010) is the site of a multicentre-multisource prospective population based registry called LIGALS (Liguria Amyotrophic Lateral Sclerosis Registry). All incident <span class="hlt">ALS</span> cases during the period 2009-2010 were enrolled and followed up. Cases were identified using several concurrent sources. <span class="hlt">ALS</span> diagnosis was based on the revised El Escorial criteria. One hundred and four cases were enrolled, generating an annual crude incidence of 3.22/100,000 (95% CI 2.66-3.90), with a male/female ratio of 1.34. The annual standardized incidence, age and gender adjusted to the 2001 Italian population, was 2.51. At last observation on 1 March 2012, 45% of patients registered in the LIGALS had died, with a median survival of 45 months from symptoms onset. According to capture-recapture estimation, three patients were unobserved. For both genders, demographic and clinical features were collected. In conclusion, comparing these data to those of epidemiological studies with a similar prospective design, the occurrence of <span class="hlt">ALS</span> is similar. The observed crude incidence was higher compared to other Italian studies, due in part to a very careful case ascertainment and in part to a high percentage of the elderly in Liguria. PMID:23030513</p> <div class="credits"> <p class="dwt_author">Bandettini di Poggio, Monica; Sormani, Maria Pia; Truffelli, Romina; Mandich, Paola; Origone, Paola; Verdiani, Simonetta; Mantero, Vittorio; Scialò, Carlo; Schenone, Angelo; Mancardi, Giovanni Luigi; Caponnetto, Claudia</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">360</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://darwin.biology.utah.edu/PubsHTML/PDF-Files/30.pdf"> <span id="translatedtitle">Page et <span class="hlt">al</span>. 1 POINTS IN QUESTION</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">switches; Hafner & Nadler (1988), whose data require at most two host switches out of nine speciation events (Page, 1990); and his own studies (Barker, 1991) of 11 species of rock- #12;Page et <span class="hlt">al</span>. 3 wallaby lice for which he found little evidence for cospeciation. It is hard to see how Barker arrived at his</p> <div class="credits"> <p class="dwt_author">Clayton, Dale H.</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_17");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return showDiv("page_2");' href="#">2</a> <a 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src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">361</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/1996JPCM....8.1729S"> <span id="translatedtitle">Electronic conduction in `random' <span class="hlt">Al</span> - Ge films</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Electronic transport properties have been measured for 3500 Å <span class="hlt">Al</span> - Ge films with a random microstructure. The room temperature resistivity exhibits a sharp discontinuous jump at the metal - insulator transition, allowing for the direct determination of the critical metallic fraction, 0953-8984/8/11/016/img12 vol% <span class="hlt">Al</span>. A new procedure is described for extracting values for the zero-temperature conductivity 0953-8984/8/11/016/img13 from the low-temperature conductivity data. When 0953-8984/8/11/016/img13 is extrapolated to zero as a function of <span class="hlt">Al</span> content, the value obtained for the critical aluminium fraction 0953-8984/8/11/016/img15 is in excellent agreement with the value obtained from the room temperature data. The films exhibit two transition regions below 1.2 K as the <span class="hlt">Al</span> content is decreased - a transition from the superconductivity state to the normal-metallic state, followed by a second transition from the normal-metallic state to the insulating, variable-range-hopping state. Superconducting fluctuation data taken above 1.2 K were well described using the 2D Aslamazov - Larkin and Maki - Thompson formulae; the `resistive tails' below 1.2 K are also discussed.</p> <div class="credits"> <p class="dwt_author">Shoshany, J.; Goldner, V.; Rosenbaum, R.; Witcomb, M.; McLachlan, D. S.; Palevski, A.; Karpovski, M.; Gladkikh, A.; Lereah, Y.</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-03-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">362</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://faculty.kfupm.edu.sa/EE/husainm/EE%20340/Research%20Projects/Students%20Reports/3-Optical%20Fibers-%20Al%20Harbi.pdf"> <span id="translatedtitle">Optical Fiber Ziyad G. <span class="hlt">Al</span>-Harbi</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Optical Fiber Ziyad G. <span class="hlt">Al</span>-Harbi Electrical Engineering Sr. Student King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia. Abstract- Introductions to optical fiber explaining internal reflection effect their operation. Also we will see the applications of fiber optics</p> <div class="credits"> <p class="dwt_author">Masoudi, Husain M.</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">363</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://jeannicod.ccsd.cnrs.fr/docs/00/05/35/49/PDF/ijn_00000490_00.pdf"> <span id="translatedtitle">Combating <span class="hlt">Al</span> Qaeda's Splinters: Mishandling Suicide Terrorism</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The past three years saw more suicide attacks than the last quarter century. Most of these were religiously motivated. While most Westerners have imagined a tightly coordinated transnational terrorist organization headed by <span class="hlt">Al</span> Qaeda, it seems more likely that nations under attack face a set of largely autonomous groups and cells pursuing their own regional aims. Repeated suicide actions show</p> <div class="credits"> <p class="dwt_author">Scott Atran</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">364</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/56496475"> <span id="translatedtitle">Microbial Bioreactor Development in the <span class="hlt">ALS</span> NSCORT</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The NASA Specialized Center of Research and Training in Advanced Life Support (the <span class="hlt">ALS</span> NSCORT), a partnership of Alabama A & M, Howard, and Purdue Universities, was established by NASA in 2002 to develop technologies that will reduce the Equivalent System Mass (ESM) of regenerative processes within future space life-support systems. A key focus area of NSCORT research has been</p> <div class="credits"> <p class="dwt_author">Cary Mitchell; Dawn Whitaker; M. Katherine Banks; Albert J. Heber; Ronald F. Turco; Loring F. Nies; James E. Alleman; Sybil E. Sharvelle; Congna Li; Megan Heller</p> <p class="dwt_publisher"></p> <p class="publishDate">2008-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">365</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://hal.archives-ouvertes.fr/docs/00/89/02/78/PDF/hal-00890278.pdf"> <span id="translatedtitle">DER SONNENSTAND <span class="hlt">ALS</span> ZEITGEBER FR DIE BIENE</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">DER SONNENSTAND <span class="hlt">ALS</span> ZEITGEBER FÃ?R DIE BIENE La position du soleil comme indicateur de temps chez l Institut der Universitât, Frankfurt am Main SUMMARY THE ADJUSTEMENT OF THE INTERNAL CLOCK OF HONEY BEES ACCORDING TO THE POSITION OF THE SUN 1. The internal clock of honey bees can be reset, if time</p> <div class="credits"> <p class="dwt_author">Paris-Sud XI, Université de</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">366</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.unimi.it/cataloghi/ufficio_stampa/n._38_x_sito.pdf"> <span id="translatedtitle">Scott (e Amundsen) <span class="hlt">al</span> Polo Sud,</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">pag. 2 Scott (e Amundsen) <span class="hlt">al</span> Polo Sud, cento anni dopo di Nicoletta Brazzelli pag. 4 pag. 6 Entra motorie di Sandro Saronni e Stefano Benedini pag. 10 La cooperazione internazionale allo sviluppo in un Cominelli, Giovanni de Berti, e Albert Henke Misurare la moderna agorà virtuale di Luigi Curini, Stefano M</p> <div class="credits"> <p class="dwt_author">De Cindio, Fiorella</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">367</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://faculty.kfupm.edu.sa/EE/husainm/EE%20340/Research%20Projects/Students%20Reports/6-%20Railguns-%20Al-Khaldi.pdf"> <span id="translatedtitle">The Rail Gun Muad <span class="hlt">Al</span> Khaldi</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">The Rail Gun Muad <span class="hlt">Al</span> Khaldi Department of Electrical Engineering King Fahd University of Petroleum and Minerals Abstract- The rail gun is one of promising ways of launching projectiles. Recently, many. In this project, I am going to investigate the construction of electromagnetic rail guns, the way the function</p> <div class="credits"> <p class="dwt_author">Masoudi, Husain M.</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">368</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.mi.informatik.uni-frankfurt.de/research/phdtheses/rfischlin.dissertation.2002.ps"> <span id="translatedtitle">Das Faktorisierungsrepr asentationsproblem <span class="hlt">als</span> Basis kryptographischer Protokolle</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Wolfgang Goethe-Universit at in Frankfurt am Main | von Roger Fischlin aus O#11;enbach am Main | Frankfurt am Main 2002 D F 1 #12; ii Vom Fachbereich Mathematik der Johann Wolfgang Goethe-Universit at <span class="hlt">als</span> Mitarbeit von 1998 bis 2001 in der Gruppe von Prof. Dr.Schnorr am Fachbereich Ma- thematik der J.W.Goethe</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">369</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://web.mit.edu/bigdata-priv/pdf/Salil-Vadhan.pdf"> <span id="translatedtitle">Current Developments in Differen1<span class="hlt">al</span> Privacy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">­ Not necessarily by adding noise to answer! · Good for Big Data: more u1lity and more] · clustering [BDMN05,NRS07] · social network analysis [HLMJ09,GRU11,KRSY11,KNRS13,BBDS13,KPRU12] · ... See Simons Ins1tute Workshop on Big Data & Differen1<span class="hlt">al</span></p> <div class="credits"> <p class="dwt_author">Oliva, Aude</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">370</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://files.eric.ed.gov/fulltext/ED542783.pdf"> <span id="translatedtitle">U-<span class="hlt">ALS</span>: A Ubiquitous Learning Environment</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p class="result-summary">The diffusion of the use of the learning virtual environments presents a great potential for the development of an application which meet the necessities in the education area. In view of the importance of a more dynamic application and that can adapt itself continuously to the students' necessities, the "U-<span class="hlt">ALS</span>" (Ubiquitous Adapted Learning…</p> <div class="credits"> <p class="dwt_author">Piovesan, Sandra Dutra; Passerino, Liliana Maria; Medina, Roseclea Duarte</p> <p class="dwt_publisher"></p> <p class="publishDate">2012-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">371</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.springerlink.com/index/g560036739k63n82.pdf"> <span id="translatedtitle">Hautdrüsen <span class="hlt">als</span> träger der pilzsymbiose bei ambrosiakäfern</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">1.Die Ambrosiapilze holzbrütender Ipiden und Platypodiden überwintern in Form von Oidien und Sproßzellen in Ansammlungen von Hautdrüsensekreten dieser Käfer. Die Lokalisation der symbiontischen Pike ist bei den einzelnen Ambrosiakäfergruppen verschieden. Die Weibchen der Trypodendron-Arten besitzen <span class="hlt">als</span> Symbiontenwohnstätten schlauchförmige, unter der Hautduplikatur am Hinterrande des Pronotums gelegene Öldrüsen, die Weibchen von Xylosandrus germanus und von Anisandrus dispar überwintern ihre Pilze in</p> <div class="credits"> <p class="dwt_author">H. Francke-Grosmann</p> <p class="dwt_publisher"></p> <p class="publishDate">1956-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">372</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2005AcPPA.107..776F"> <span id="translatedtitle">Defects Associated with Nanostructures in <span class="hlt">Al</span>ZnMg and <span class="hlt">Al</span>Cu(Mg) Alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The present work reports on a positron annihilation study addressing the structural and chemical characterization of solute aggregates containing open volumes (vacancies and/or misfit regions at precipitate-matrix interfaces) in <span class="hlt">Al</span>ZnMg, <span class="hlt">Al</span>Cu, and <span class="hlt">Al</span>CuMg alloys. High resolution transmission electron microscopy results for selected ageing conditions are also presented. Two main points are discussed: (i) differentiation of the origin of hardening during artificial ageing between the <span class="hlt">Al</span>ZnMg and <span class="hlt">Al</span>Cu(Mg) alloy systems; (ii) structural origin of secondary ageing at low temperature, after a few minutes of high temperature exposure. It is shown that in <span class="hlt">Al</span>ZnMg alloys hardening at a high temperature is concomitant with the loss of coherency; on the contrary, in <span class="hlt">Al</span>Cu(Mg) alloys hardening is associated with coherent structures. Positron lifetime and coincidence Doppler broadening data taken during secondary ageing indicate that the residual solute supersaturation leads to the formation of coherent Zn-Mg-v (or Cu-Mg-v) aggregates.</p> <div class="credits"> <p class="dwt_author">Ferragut, R.</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-05-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">373</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19790025135&hterms=Nazarova&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DE.%2BNazarova"> <span id="translatedtitle">Some TEM observations of <span class="hlt">Al</span>2O3 scales formed on NiCr<span class="hlt">Al</span> alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The microstructural development of <span class="hlt">Al</span>2O3 scales on NiCr<span class="hlt">Al</span> alloys has been examined by transmission electron microscopy. Voids were observed within grains in scales formed on a pure NiCr<span class="hlt">Al</span> alloy. Both voids and oxide grains grew measurably with oxidation time at 1100 C. The size and amount of porosity decreased towards the oxide-metal growth interface. The voids resulted from an excess number of oxygen vacancies near the oxidemetal interface. Short-circuit diffusion paths were discussed in reference to current growth stress models for oxide scales. Transient oxidation of pure, Y-doped, and Zr-doped NiCr<span class="hlt">Al</span> was also examined. Oriented alpha-(<span class="hlt">Al</span>, Cr)2O3 and Ni(<span class="hlt">Al</span>, Cr)2O4 scales often coexisted in layered structures on all three alloys. Close-packed oxygen planes and directions in the corundum and spinel layers were parallel. The close relationship between oxide layers provided a gradual transition from initial transient scales to steady state <span class="hlt">Al</span>2O3 growth.</p> <div class="credits"> <p class="dwt_author">Smialek, J.; Gibala, R.</p> <p class="dwt_publisher"></p> <p class="publishDate">1979-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">374</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19800028901&hterms=scale+corrosion&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Dscale%2Bcorrosion"> <span id="translatedtitle">Some TEM observations of <span class="hlt">Al</span>2O3 scales formed on NiCr<span class="hlt">Al</span> alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The microstructural development of <span class="hlt">Al</span>2O3 scales on NiCr<span class="hlt">Al</span> alloys has been examined by transmission electron microscopy. Voids have been observed within grains in scales formed on a pure NiCr<span class="hlt">Al</span> alloy. Both voids and oxide grains grew measurably with oxidation time at 1100 C. The size and amount of porosity decreased towards the oxide-metal growth interface. It was postulated that the voids resulted from an excess number of oxygen vacancies near the oxide-metal interface. Short-circuit diffusion paths were discussed in reference to current growth stress models for oxide scales. Transient oxidations of pure, Y-doped, and Zr-doped NiCr<span class="hlt">Al</span> was also examined. Oriented alpha-(<span class="hlt">Al</span>,Cr)2O3 and Ni(<span class="hlt">Al</span>,Cr)2O4 scales often coexisted in layered structures on all three alloys. Close-packed oxygen planes and directions in the corundum and spinel layers were parallel. The close relationships between oxide layers provided a gradual transition from initial transient scales to steady state <span class="hlt">Al</span>2O3 growth.</p> <div class="credits"> <p class="dwt_author">Smialek, J.; Gibala, R.</p> <p class="dwt_publisher"></p> <p class="publishDate">1979-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">375</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/23924708"> <span id="translatedtitle">High-performance nonvolatile <span class="hlt">Al/Al</span>O(x)/CdTe:Sb nanowire memory device.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Here we demonstrate a room temperature processed nonvolatile memory device based on an <span class="hlt">Al/Al</span>O(x)/CdTe:Sb nanowire (NW) heterojunction. Electrical analysis shows an echelon hysteresis composed of a high-resistance state (HRS) and a low-resistance state (LRS), which can allow it to write and erase data from the device. The conductance ratio is as high as 10?, with a retention time of 3 × 10? s. Moreover, the SET voltages ranged from +6 to +8 V, whilst the RESET voltage ?0 V. In addition, flexible memory nano-devices on PET substrate with comparable switching performance at bending condition were fabricated. XPS analysis of the <span class="hlt">Al/Al</span>O(x)/CdTe:Sb NW heterojunction after controlled Ar? bombardment reveals that this memory behavior is associated with the presence of ultra-thin <span class="hlt">Al</span>O(x) film. This <span class="hlt">Al/Al</span>O(x)/CdTe:Sb NW heterojunction will open up opportunities for new memory devices with different configurations. PMID:23924708</p> <div class="credits"> <p class="dwt_author">Xie, Chao; Nie, Biao; Zhu, Long; Zeng, Long-Hui; Yu, Yong-Qiang; Wang, Xian-He; Fang, Qun-Ling; Luo, Lin-Bao; Wu, Yu-Cheng</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-09-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">376</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/896194"> <span id="translatedtitle">Abrasive wear behavior of Ni<span class="hlt">Al</span> and Ni<span class="hlt">Al</span>-TiB2 composites</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Abrasive wear of Ni<span class="hlt">Al</span> and Ni<span class="hlt">Al</span> with 10, 20, and 40 vol.% TiB2 has been investigated using particles of different types and sizes. The addition of TiB2 as a particulate reinforcement to Ni<span class="hlt">Al</span> increases the hardness of the composite with respect to Ni<span class="hlt">Al</span>, and reduces the wear rate at all volume fractions on garnet and <span class="hlt">Al</span>2O3 abrasives. Abrasion on SiC resulted in a minimum of the wear rate for the composite with 20% TiB2for most conditions. The composite with 40% TiB2consistently exhibited wear rates higher than the other composites when abraded on SiC. The only instance when the Ni<span class="hlt">Al</span>?40% TiB2 composite had a lower wear rate was when it was abraded on 16 and 37 mm SiC particles. The Ni<span class="hlt">Al</span>?TiB2 composite serves as a model system for studying the effect of reinforcement volume fraction on composite wear behavior and is discussed in terms of a composite wear model developed by Axe?n and Jacobson. q1999 Published by Elsevier Science S.A. All rights reserved.</p> <div class="credits"> <p class="dwt_author">Hawk, Jeffrey A.; Alman, David E.</p> <p class="dwt_publisher"></p> <p class="publishDate">1999-04-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">377</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/21880027"> <span id="translatedtitle">An <span class="hlt">Al</span>-inducible MATE gene is involved in external detoxification of <span class="hlt">Al</span> in rice.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">A number of plant species, including rice, secretes citrate from roots in response to <span class="hlt">Al</span> stress. Here we characterized the functions of a gene, OsFRDL4 (Os01g0919100) that belongs to the multidrug and toxic compound extrusion (MATE) family in rice (Oryza sativa). Heterologous expression in Xenopus oocyte showed that the OsFRDL4 protein was able to transport citrate and was activated by <span class="hlt">Al</span>. The expression level of the OsFRDL4 gene in roots was very low in the absence of <span class="hlt">Al</span>, but was greatly enhanced by <span class="hlt">Al</span> after short exposure. Furthermore, the OsFRDL4 expression was regulated by ART1, a C2H2-type zinc finger transcription factor for <span class="hlt">Al</span> tolerance. Transient expression of OsFRDL4 in onion epidermal cells showed that it localized to the plasma membrane. Immunostaining showed that OsFRDL4 was localized in all cells in the root tip. These expression patterns and cell specificity of localization of OsFRDL4 are different from other MATE members identified previously. Knockout of OsFRDL4 resulted in decreased <span class="hlt">Al</span> tolerance and decreased citrate secretion compared with the wild-type rice, but did not affect citrate concentration in the xylem sap. Furthermore, there is a positive correlation between OsFRDL4 expression level and the amount of citrate secretion in rice cultivars that are differing in <span class="hlt">Al</span> tolerance. Taken together, our results show that OsFRDL4 is an <span class="hlt">Al</span>-induced citrate transporter localized at the plasma membrane of rice root cells and is one of the components of high <span class="hlt">Al</span> tolerance in rice. PMID:21880027</p> <div class="credits"> <p class="dwt_author">Yokosho, Kengo; Yamaji, Naoki; Ma, Jian Feng</p> <p class="dwt_publisher"></p> <p class="publishDate">2011-12-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">378</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2010AIPC.1251..300A"> <span id="translatedtitle">Precipitation mechanism of <span class="hlt">Al</span>-substituted tobermorite using hydrothermal reaction</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">We examined the addition of different crystal phases of alumina (?-<span class="hlt">Al</span>2O3, ?-<span class="hlt">Al</span>2O3) to slurries consisting of quartz and slaked lime for synthesis of <span class="hlt">Al</span>-substituted tobermorite. XRD results showed that <span class="hlt">Al</span>-substituted tobermorite formed after the reaction. It was clear that two kinds of <span class="hlt">Al</span>-substituted tobermorite synthesized using different alumina crystal phases shows different morphologies. The difference in the reactivity of the <span class="hlt">Al</span>2O3 had an influence in the hydrothermal reaction environment. The coordination number and chemical bonding-state of <span class="hlt">Al</span> caused the different morphology of the tobermorite.</p> <div class="credits"> <p class="dwt_author">Abe, Kazuki; Maeda, Hirotaka; Ishida, Emile H.</p> <p class="dwt_publisher"></p> <p class="publishDate">2010-11-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">379</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014ApPhL.105n1604Q"> <span id="translatedtitle">A crystalline oxide passivation for <span class="hlt">Al</span>2O3/<span class="hlt">Al</span>GaN/GaN</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">In situ X-ray photoelectron spectroscopy and low energy electron diffraction are performed to study the formation of a crystalline oxide on the <span class="hlt">Al</span>GaN surface. The oxidation of the <span class="hlt">Al</span>GaN surface is prepared by annealing and remote N2 + O2 plasma pretreatments resulting in a stable crystalline oxide. The impact of the oxide on the interface state density is studied by capacitance voltage (C-V) measurements. It is found that a remote plasma exposure at 550 °C shows the smallest frequency dispersion. Crystalline oxide formation may provide a novel passivation method for high quality <span class="hlt">Al</span>GaN/GaN devices.</p> <div class="credits"> <p class="dwt_author">Qin, Xiaoye; Dong, Hong; Kim, Jiyoung; Wallace, Robert M.</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-10-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">380</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19870044771&hterms=Al2O3&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3DAl2O3"> <span id="translatedtitle">Adherent <span class="hlt">Al</span>2O3 scales formed on undoped NiCr<span class="hlt">Al</span> alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Changes in the spalling behavior of <span class="hlt">Al</span>2O3 scales formed on an undoped NiCr<span class="hlt">Al</span> alloy are described. Two samples of Ni-15Cr-13<span class="hlt">Al</span> (wt pct), one a control and the other sanded, were subjected to 25 oxidation cycles. It is observed that adherent scales formed on the sanded sample; however, the control sample had speckled, spalled scales. The data reveal that the adherent scales are caused by repeated removal of surface layers after each oxidation cycle. It is determined that interfacial segregation of sulfur influences spallation and sulfur removal increases bonding. The effect of moisture on scale adhesions is investigated.</p> <div class="credits"> <p class="dwt_author">Smialek, James L.</p> <p class="dwt_publisher"></p> <p class="publishDate">1987-01-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_18");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return 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title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">381</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2015MMTB...46..485V"> <span id="translatedtitle">Density of Low-Temperature KF-<span class="hlt">Al</span>F3 Aluminum Baths with <span class="hlt">Al</span>2O3 and <span class="hlt">Al</span>PO4 Additives</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The density of the KF-<span class="hlt">Al</span>F3 melts of various KF and <span class="hlt">Al</span>F3 ratio with <span class="hlt">Al</span>2O3 and <span class="hlt">Al</span>PO4 addition has been measured using the Archimedean method. On the basis of the obtained density data the molar volumes of the melts were calculated. These molar volumes decrease with concentration of <span class="hlt">Al</span>2O3 or <span class="hlt">Al</span>PO4. In the system containing <span class="hlt">Al</span>PO4, the relation between cryolite ratios (CRs) vs slopes of molar volume trend lines was identified with excellent correlation factor of R 2 = 0.9844, while in the system containing <span class="hlt">Al</span>2O3 a discontinuity at CR = 2.5 can be observed.</p> <div class="credits"> <p class="dwt_author">Vasková, Zuzana; Kontrík, Martin; Mlynáriková, Jarmila; Bo?a, Miroslav</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-02-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">382</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40268099"> <span id="translatedtitle">Enthalpies of formation of the <span class="hlt">Al</span>–Ni intermetallic compounds</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The <span class="hlt">Al</span>–Ni system has been investigated by direct reaction calorimetry at high temperatures. Enthalpies of formation of the intermetallic compounds <span class="hlt">Al</span>Ni3, <span class="hlt">Al</span>Ni, <span class="hlt">Al</span>3Ni2, and <span class="hlt">Al</span>3Ni were determined and compared with the available experimental values based on calorimetric and emf measurements and with the calculated values from theoretical models. X-ray powder diffraction (XRD) and electron probe microanalysis (EPMA) were used to</p> <div class="credits"> <p class="dwt_author">F. Z Chrifi-Alaoui; M Nassik; K Mahdouk; J. C Gachon</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">383</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/20020993"> <span id="translatedtitle"><span class="hlt">Al</span>2O3 Insulated-Gate Structure for <span class="hlt">Al</span>GaN\\/GaN Heterostructure Field Effect Transistors Having Thin <span class="hlt">Al</span>GaN Barrier Layers</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">An <span class="hlt">Al</span>2O3 insulated-gate (IG) structure was utilized for controlling the surface potential and suppressing the gate leakage in <span class="hlt">Al</span>0.2Ga0.8N\\/GaN heterostructure field effect transistors (HFETs) having thin <span class="hlt">Al</span>GaN barrier layers (less than 10 nm). In comparison with the Schottky-gate devices, the <span class="hlt">Al</span>2O3 IG device showed successful gate control of drain current up to VGS = +4 V without leakage problems. The</p> <div class="credits"> <p class="dwt_author">Tamotsu Hashizume; Sanguan Anantathanasarn; Noboru Negoro; Eiichi Sano; Hideki Hasegawa; Kazuhide Kumakura; Toshiki Makimoto</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">384</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://research.chemistry.ohio-state.edu/allen/files/2011/09/15.pdf"> <span id="translatedtitle">Characterization of Ultrathin Films of -<span class="hlt">Al</span>2O3 and the Chemistry of 1,3-Butadiene on Ni<span class="hlt">Al</span>(001) and -<span class="hlt">Al</span>2O3</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Characterization of Ultrathin Films of -<span class="hlt">Al</span>2O3 and the Chemistry of 1,3-Butadiene on Ni<span class="hlt">Al</span>(001) and -<span class="hlt">Al</span>2O3 Michelle M. Ivey, Kathryn A. Layman, Armen Avoyan, Heather C. Allen, and John C. HemmingerVine, California 92697 ReceiVed: October 3, 2002; In Final Form: March 27, 2003 Ultrathin films of -<span class="hlt">Al</span>2O3 grown</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">385</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://irvinginstitute.columbia.edu/2012/pdf/prize4life_press_release_v13_ccaNrc.pdf"> <span id="translatedtitle">THE NEXT <span class="hlt">ALS</span> BREAKTHROUGH COULD BE YOURS Prize4Life Awards Prizes for <span class="hlt">ALS</span> Biomarker Challenge to InnoCentive</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">THE NEXT <span class="hlt">ALS</span> BREAKTHROUGH COULD BE YOURS Prize4Life Awards Prizes for <span class="hlt">ALS</span> Biomarker Challenge dedicated to reaching breakthroughs in effective treatments for Amyotrophic Lateral Sclerosis (<span class="hlt">ALS</span> handheld technologies capable #12;THE NEXT <span class="hlt">ALS</span> BREAKTHROUGH COULD BE YOURS of taking these highly sensitive</p> <div class="credits"> <p class="dwt_author">Grishok, Alla</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">386</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.isfh.de/institut_solarforschung/files/35ieee_schmidt.pdf"> <span id="translatedtitle">SILICON SURFACE PASSIVATION BY ULTRATHIN <span class="hlt">Al</span>2O3 FILMS AND <span class="hlt">Al</span>2O3/SiNx STACKS</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">SILICON SURFACE PASSIVATION BY ULTRATHIN <span class="hlt">Al</span>2O3 FILMS AND <span class="hlt">Al</span>2O3/SiNx STACKS Jan Schmidt, Boris Veith Ohrberg 1, 31860 Emmerthal, Germany ABSTRACT We show that aluminum oxide (<span class="hlt">Al</span>2O3) layers depo- sited thickness if the <span class="hlt">Al</span>2O3 films are</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">387</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://dept.lamar.edu/zhanhu/publication/PANI-Al2O3_JMC.pdf"> <span id="translatedtitle">Electrical and dielectric properties of polyaniline<span class="hlt">Al</span>2O3 nanocomposites derived from various <span class="hlt">Al</span>2O3 nanostructures</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Electrical and dielectric properties of polyaniline­<span class="hlt">Al</span>2O3 nanocomposites derived from various <span class="hlt">Al</span>2O303908j Four <span class="hlt">Al</span>2O3 nanostructures (i.e. nanofiber, nanoplatelet, nanorod and nanoflake) have been, polyaniline (PANI) nanocomposites incorporating these four <span class="hlt">Al</span>2O3 nanostructures have been fabricated using</p> <div class="credits"> <p class="dwt_author">Guo, John Zhanhu</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">388</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.uramamurthy.com/papers/bmm150.pdf"> <span id="translatedtitle">Franklin et <span class="hlt">al</span>., The Role of Consciousness in Memory 2005 Franklin et <span class="hlt">al</span>. http//:www.brains-minds-media.org</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Franklin et <span class="hlt">al</span>., The Role of Consciousness in Memory © 2005 Franklin et <span class="hlt">al</span>. http//:www.brains et <span class="hlt">al</span>., The Role of Consciousness in Memory © 2005 Franklin et <span class="hlt">al</span>. http//:www.brains-minds-media.org 1 The Role of Consciousness in Memory Stan Franklin1* , Bernard J. Baars2 , Uma Ramamurthy1</p> <div class="credits"> <p class="dwt_author">Ramamurthy, Uma</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">389</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2011-11-17/pdf/2011-29656.pdf"> <span id="translatedtitle">76 FR 71355 - United States et <span class="hlt">al</span>. v. Blue Cross and Blue Shield of Montana, Inc. et <span class="hlt">al</span>.; Proposed Final...</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013</a></p> <p class="result-summary">...JUSTICE Antitrust Division United States et <span class="hlt">al</span>. v. Blue Cross and Blue Shield of Montana, Inc. et <span class="hlt">al</span>.; Proposed Final Judgment...Montana, Billings Division, in United States et <span class="hlt">al</span>. v. Blue Cross and Blue Shield of Montana, Inc. et <span class="hlt">al</span>.,...</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate">2011-11-17</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">390</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2013JaJAP..52hJA07N"> <span id="translatedtitle">Self-Separation of Sublimation-Grown <span class="hlt">Al</span>N with <span class="hlt">Al</span>SiN Buffer Layer</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary"><span class="hlt">Al</span>N was grown by a sublimation method on 6H-SiC. We found the grown <span class="hlt">Al</span>N layer is easily separated from the substrate when Si powder is added to the <span class="hlt">Al</span>N source powder. The formation of <span class="hlt">Al</span>SiN layer with the Si content of 15% at the <span class="hlt">Al</span>N/6H-SiC interface was confirmed by energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). This <span class="hlt">Al</span>SiN layer causes the separation of <span class="hlt">Al</span>N.</p> <div class="credits"> <p class="dwt_author">Nishino, Katsushi; Nakauchi, Jun; Hayashi, Kotaro; Tsukihara, Masashi</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-08-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">391</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3626945"> <span id="translatedtitle">Fabrication of Fe-<span class="hlt">Al</span> nanoparticles by selective oxidation of Fe-<span class="hlt">Al</span> thin films</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p class="result-summary">The possibility of a new technique for fabricating nanoparticles from thin films using selective oxidation in an atmosphere mixture of water vapor and hydrogen was investigated. Fe-5wt.%<span class="hlt">Al</span> films were RF-sputtered and annealed in the atmosphere mixture at 900°C for up to 200 min, in order to oxidize aluminum selectively. Thermodynamics simulation showed that temperatures exceeding 800°C are necessary to prevent iron from being oxidized, as confirmed by the depth profile of XPS. As the annealing time increased, the morphology of the 200-nm Fe-<span class="hlt">Al</span> films changed from the continuous to the discontinuous type; thus, particulate Fe-<span class="hlt">Al</span> films formed after 100 min. The particulate 10- to 100-nm Fe-<span class="hlt">Al</span> films showed super-paramagnetic behavior after the oxidation. Thus, a new technique for fabricating nanoparticles was successfully introduced using selective oxidation. PMID:23547781</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate">2013-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">392</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://dspace.mit.edu/handle/1721.1/65719"> <span id="translatedtitle">The evolution of <span class="hlt">Al</span>-Azhar Street, <span class="hlt">Al</span>-Qahira, Egypt</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">The historic quarter of Cairo, <span class="hlt">al</span>-Qahira, is going through a period intense transformation that is threatening the physical environment as well as the social and economic fabric of the city. The transformations taking place ...</p> <div class="credits"> <p class="dwt_author">Elkatsha, Markus Fawzy Fahmy</p> <p class="dwt_publisher"></p> <p class="publishDate">2000-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">393</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19720050230&hterms=molten+salt+battery&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dmolten%2Bsalt%2Bbattery"> <span id="translatedtitle">Rechargeable <span class="hlt">Al</span>/Cl2 battery with molten <span class="hlt">Al</span>Cl4/-/ electrolyte.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">A molten salt system based on <span class="hlt">Al</span>- and Cl2 carbon electrodes, with an <span class="hlt">Al</span>Cl3 alkali chloride eutectic as electrolyte, offers promise as a rechargeable, high energy density battery which can operate at a relatively low temperature. Electrode kinetic studies showed that the electrode reactions at the <span class="hlt">Al</span> anode were rapid and that the observed passivation phenomena were due to the formation at the electrode surface of a solid salt layer resulting from concentration changes on anodic or cathodic current flow. It was established that carbon electrodes were intrinsically active for chlorine reduction in <span class="hlt">Al</span>Cl3-alkali chloride melts. By means of a rotating vitreous carbon disk electrode, the kinetic parameters were determined.</p> <div class="credits"> <p class="dwt_author">Holleck, G. L.; Giner, J.; Burrows, B.</p> <p class="dwt_publisher"></p> <p class="publishDate">1972-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">394</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/15941115"> <span id="translatedtitle">Oddities in Kirkpatrick, et <span class="hlt">al.'s</span> study of children of lesbian mothers.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Kirkpatrick, et <span class="hlt">al.'s</span> 1976 study of what happened to 20 lesbians' children has received considerable attention, apparently later being matched with 20 heterosexuals' children. In 2004, Kirkpatrick generally acknowledged Schumm's caution that her findings are less impressive than are needed, yet, Kirkpatrick stated her "early findings have been reinforced" and that "no evidence of differences in the children grouped by the mother's sexual orientation" have been documented by subsequent research. Close examination of the data of these studies indicates that children from 13 lesbian mothers were compared with children from 13 divorced heterosexuals. Further, there are contradictions between the published reports regarding the nature of samples and various findings. Analysis of Kirkpatrick, et <span class="hlt">al.'s</span> study suggests that children do less well when raised by homosexual parents. PMID:15941115</p> <div class="credits"> <p class="dwt_author">Cameron, Paul</p> <p class="dwt_publisher"></p> <p class="publishDate">2005-04-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">395</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/1007835"> <span id="translatedtitle">Interdiffusion in the Mg-<span class="hlt">Al</span> system and Intrinsic Diffusion in (<span class="hlt">Al</span>3Mg2) Phase</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Increasing use and development of lightweight Mg-alloys have led to the desire for more fundamental research in and understanding of Mg-based systems. As a strengthening component, <span class="hlt">Al</span> is one of the most important and common alloying elements for Mg-alloys. In this study, solid-to-solid diffusion couple techniques were employed to examine the interdiffusion between pure Mg and <span class="hlt">Al</span>. Diffusion anneals were carried out at 300 , 350 , and 400 C for 720, 360, and 240 hours, respectively. Optical and scanning electron microscopies (SEM) were employed to observe the formation of the intermetallics -<span class="hlt">Al</span>12Mg17 and -<span class="hlt">Al</span>3Mg2, but not -phase. Concentration profiles were determined using X-ray energy dispersive spectroscopy (XEDS). The growth constants and activation energies were determined for each intermetallic phase.</p> <div class="credits"> <p class="dwt_author">Brennan, Sarah [University of Central Florida; Bermudez, Katrina [University of Central Florida; Kulkarni, Nagraj S [ORNL; Sohn, Yong Ho [University of Central Florida</p> <p class="dwt_publisher"></p> <p class="publishDate">2011-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">396</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19930070119&hterms=Al2O3&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3DAl2O3"> <span id="translatedtitle">Fabrication and properties of functionally graded Ni<span class="hlt">Al/Al</span>2O3 composites</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">A modified sedimentation process was used in the production of a functionally gradient material (FGM), Ni<span class="hlt">Al/Al</span>2O3. A simple finite element model was used to guide our design and fabrication efforts by estimating residual stress states as a function of composite structure. This approach could lead to tailored designs that enhance or avoid specific residual stress states. Thermal cycling tests were factored into the model to predict time dependent or steady-state internal temperature and stress profiles. Four-point bend tests were conducted to establish the mechanical load-displacement behavior of a single interlayer FGM at room temperature, 800 and 1000 K. Room temperature bend strength of the FGM was 3-4 times that of the base Ni<span class="hlt">Al</span>. At elevated temperatures, composite fracture occurred in a gradual, noncatastrophic mode involving Ni<span class="hlt">Al</span> retardation of a succession of cracks originating in the alumina face.</p> <div class="credits"> <p class="dwt_author">Miller, D. P.; Lannutti, J. J.; Noebe, R. D.</p> <p class="dwt_publisher"></p> <p class="publishDate">1993-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">397</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19880043042&hterms=Al2O3&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3DAl2O3"> <span id="translatedtitle">Adherent <span class="hlt">Al</span>2O3 scales produced on undoped NiCr<span class="hlt">Al</span> alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Repeated oxidation and polishing of high purity Ni-15Cr-13<span class="hlt">Al</span> has dramatically changed its cyclic oxidation behavior from nonadherent to adherent. No apparent change in scale phase, morphology or interface structure occurred during this transition, dismissing any mechanism based on pegging, vacancy sink, or growth stress. The principle change that did occur was a reduction in the sulfur content from 10 ppmw to 3 ppmw after 25 cycles at 1120 C. These observations are used to support the model of <span class="hlt">Al</span>2O3 scale adherence put forth by Smeggil et <span class="hlt">al</span>. which claims that <span class="hlt">Al</span>2O3 scale spallation occurs due to sulfur segregation and bond deterioration at the oxide-metal interface.</p> <div class="credits"> <p class="dwt_author">Smialek, James L.</p> <p class="dwt_publisher"></p> <p class="publishDate">1986-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">398</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/6955311"> <span id="translatedtitle">Accurate interatomic potentials for Ni, <span class="hlt">Al</span> and Ni/sub 3/<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">To obtain meaningful results from atomistic simulations of materials, the interatomic potentials must be capable of reproducing the thermodynamic properties of the system of interest. Pairwise potentials have known deficiencies that make them unsuitable for quantitative investigations of defective regions such as crack tips and free surfaces. Daw and Baskes (Phys. Rev. B 29, 6443 (1984)) have shown that including a local ''volume'' term for each atom gives the necessary many-body character without the severe computational dependence of explicit n-body potential terms. Using a similar approach, we have fit an interatomic potential to the Ni/sub 3/<span class="hlt">Al</span> alloy system. This potential can treat diatomic Ni/sub 2/, diatomic <span class="hlt">Al</span>/sub 2/, fcc Ni, fcc <span class="hlt">Al</span> and L1/sub 2/ Ni/sub 3/<span class="hlt">Al</span> on an equal footing. Details of the fitting procedure are presented, along with the calculation of some properties not included in the fit.</p> <div class="credits"> <p class="dwt_author">Voter, A.F.; Chen, Shao Ping</p> <p class="dwt_publisher"></p> <p class="publishDate">1986-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">399</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2011JPhCS.325a2023R"> <span id="translatedtitle">Antiferromagnetic behaviour of Tb2<span class="hlt">Al</span> alloy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The structural, thermal and magnetic properties ol the Tb2<span class="hlt">Al</span> alloy have been investigated by AC/DC magnetic susceptibility, specific heat, X-ray and neutron diffraction measurements. DC and AC-magnetic susceptibility results are consistent with an AFM order at TN = 52 K. The specific heat data show a lambda anomaly associated to the magnetic transition with a peak at 52 K (cord = 99 J/molTbK). The analysis of thermodiffractograms of neutron diffraction patterns indicates that, below the ordering temperature, the magnetic reflections can be indexed with a commensurate lattice related to the crystallographic cell (Pmna) by a propagation vector k = (1/2, 1/2, 1/2). The results are compared with those reported for other magnetic rare earth alloys of R2<span class="hlt">Al</span>-type (with R = Nd, Gd and Dy).</p> <div class="credits"> <p class="dwt_author">Rojas, D. P.; André, G.; Rodríguez Fernández, J.; Sánchez Marcos, J.; Fernández Barquín, L.; Echevarria, C.</p> <p class="dwt_publisher"></p> <p class="publishDate">2011-10-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">400</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/1983JAP....54.3172R"> <span id="translatedtitle">Interdiffusion in ? phase Cu-<span class="hlt">Al</span> alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The diffusion behavior of ? phase Cu-<span class="hlt">Al</span> has been studied at 800, 850, and 950 °C using the experimental approach and analysis scheme of Kirkendall and Darken. Diffusion couples were made using the window frame technique and concentration profiles were determined by electron probe microanalysis. The chemical diffusion coefficient, D˜ was found to be D˜=0.65 exp(-42200/RT) cm2/s. The diffusivity was observed to be independent of composition over the range 11-13 wt. % <span class="hlt">Al</span>. The self-diffusion coefficients DCu and DAl were determined to be DAl =0.13 exp(-38900/RT) cm2/s and DCu =2.2 exp(-43400/RT) cm2/s. All activation energies are in calories/mole.</p> <div class="credits"> <p class="dwt_author">Romig, A. D., Jr.</p> <p class="dwt_publisher"></p> <p class="publishDate">1983-06-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_19");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return showDiv("page_2");' href="#">2</a> <a onClick='return showDiv("page_3");' href="#">3</a> <a onClick='return showDiv("page_4");' 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showDiv("page_12");' href="#">12</a> <a onClick='return showDiv("page_13");' href="#">13</a> <a onClick='return showDiv("page_14");' href="#">14</a> <a onClick='return showDiv("page_15");' href="#">15</a> <a onClick='return showDiv("page_16");' href="#">16</a> <a onClick='return showDiv("page_17");' href="#">17</a> <a onClick='return showDiv("page_18");' href="#">18</a> <a onClick='return showDiv("page_19");' href="#">19</a> <a onClick='return showDiv("page_20");' href="#">20</a> <a style="font-weight: bold;">21</a> <a onClick='return showDiv("page_22");' href="#">22</a> <a onClick='return showDiv("page_23");' href="#">23</a> <a onClick='return showDiv("page_24");' href="#">24</a> <a onClick='return showDiv("page_25");' href="#">25</a> </span> </span> <a id="NextPageLink" onclick='return showDiv("page_22");' href="#" title="Next Page"> <img id="NextPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.next.18x20.png" alt="Next Page" /></a> <a id="LastPageLink" onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">401</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/960677"> <span id="translatedtitle">Observable Proxies For 26 <span class="hlt">Al</span> Enhancement</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">We consider the cospatial production of elements in supernova explosions to find observationally detectable proxies for enhancement of {sup 26}<span class="hlt">Al</span> in supernova ejecta and stellar systems. Using four progenitors we explore a range of 1D explosions at different energies and an asymmetric 3D explosion. We find that the most reliable indicator of the presence of {sup 26}<span class="hlt">Al</span> in unmixed ejecta is a very low S/Si ratio ({approx} 0.05). Production of N in O/S/Si-rich regions is also indicative. The biologically important element P is produced at its highest abundance in the same regions. Proxies should be detectable in supernova ejecta with high spatial resolution multi wavelength observations, but the small absolute abundance of material injected into a proto-planetary disk makes detection unlikely in existing or forming stellar/planetary systems.</p> <div class="credits"> <p class="dwt_author">Fryer, Christopher L [Los Alamos National Laboratory; Young, Patrick A [Los Alamos National Laboratory; Ellinger, Carola I [ASU; Arnett, William D [UNIV ARIZONA</p> <p class="dwt_publisher"></p> <p class="publishDate">2008-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">402</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/1996PhRvB..54.3033Y"> <span id="translatedtitle">Giant magnetoresistance in Cu-Mn-<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Giant negative magnetoresistance (GMR) has been observed in melt-spun CuxMnyAlz ribbons (x=50-65, y=5-25, and z=25-30), with values up to 15% at 30 K. GMR was observed in all samples with off-stoichiometric composition which had a tweed structure consisting of a mixture of Mn-rich and Mn-poor Cu2Mn<span class="hlt">Al</span>-type (2:1:1) regions and/or of a fine mixture of magnetic 2:1:1 and nonmagnetic Cu9<span class="hlt">Al</span>4 (9:4) phases. The highest value was obtained in samples with the 2:1:1 phase as a majority phase. The observed GMR is attributed to interfacial scattering at these fine structural mixtures.</p> <div class="credits"> <p class="dwt_author">Yiping, L.; Murthy, A.; Hadjipanayis, G. C.; Wan, H.</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-08-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">403</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://arxiv.org/pdf/1501.04880.pdf"> <span id="translatedtitle">Status of the <span class="hlt">Al</span>Cap experiment</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">The <span class="hlt">Al</span>Cap experiment is a joint project between the COMET and Mu2e collaborations. Both experiments intend to look for the lepton-flavour violating conversion $\\mu + A \\rightarrow e + A$, using tertiary muons from high-power pulsed proton beams. In these experiments the products of ordinary muon capture in the muon stopping target are an important concern, both in terms of hit rates in tracking detectors and radiation damage to equipment. The goal of the <span class="hlt">Al</span>Cap experiment is to provide precision measurements of the products of nuclear capture on Aluminium, which is the favoured target material for both COMET and Mu2e. The results will be used for optimising the design of both conversion experiments, and as input to their simulations. Data was taken in December 2013 and is currently being analysed.</p> <div class="credits"> <p class="dwt_author">Litchfield, R Phillip</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">404</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://arxiv.org/pdf/1501.04880v1"> <span id="translatedtitle">Status of the <span class="hlt">Al</span>Cap experiment</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">The <span class="hlt">Al</span>Cap experiment is a joint project between the COMET and Mu2e collaborations. Both experiments intend to look for the lepton-flavour violating conversion $\\mu + A \\rightarrow e + A$, using tertiary muons from high-power pulsed proton beams. In these experiments the products of ordinary muon capture in the muon stopping target are an important concern, both in terms of hit rates in tracking detectors and radiation damage to equipment. The goal of the <span class="hlt">Al</span>Cap experiment is to provide precision measurements of the products of nuclear capture on Aluminium, which is the favoured target material for both COMET and Mu2e. The results will be used for optimising the design of both conversion experiments, and as input to their simulations. Data was taken in December 2013 and is currently being analysed.</p> <div class="credits"> <p class="dwt_author">R. Phillip Litchfield</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-01-20</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">405</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/26597809"> <span id="translatedtitle">An independent assessment of Groeneveld et <span class="hlt">al.'s</span> 1995 CHF look-up table</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The prediction capability of the 1995 CHF look-up table (Groeneveld D.C., et <span class="hlt">al</span>., Nucl. Eng. Des. 163 (1996) 1–23) is independently assessed based on the KAIST data base consisting of 10?822 data for uniformly-heated, vertical, round tubes. This confirms the error statistics for the heat balance method reported by Groeneveld et <span class="hlt">al</span>. and shows overall average and RMS errors of</p> <div class="credits"> <p class="dwt_author">Won-Pil Baek; Hong-Chae Kim; Soon Heung Chang</p> <p class="dwt_publisher"></p> <p class="publishDate">1997-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">406</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40081139"> <span id="translatedtitle">PVD Coating of Mg–AZ31 by Thin Layer of <span class="hlt">Al</span> and <span class="hlt">Al</span>–Si</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Although magnesium alloys have the advantage of high specific strength, they have poor atmospheric corrosion resistance. An\\u000a important method of improving the corrosion resistance is by applying a coating layer. In this work, the physical vapor deposition\\u000a (PVD) technique is used for coating a magnesium (Mg) AZ31 sheet substrate with a thin layer of high purity aluminum (<span class="hlt">Al</span>) and\\u000a <span class="hlt">Al</span>–12.6%</p> <div class="credits"> <p class="dwt_author">Mohamed A. Taha; Nahed A. El-Mahallawy; Rawia M. Hammouda; Sherif I. Nassef</p> <p class="dwt_publisher"></p> <p class="publishDate">2010-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">407</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2013RuMet2013..633L"> <span id="translatedtitle">Simulation of aluminothermic smelting of <span class="hlt">Al</span>-Zr and <span class="hlt">Al</span>-Zr-Mo-Sn alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Aluminothermic smelting of <span class="hlt">Al</span>-Zr and <span class="hlt">Al</span>-Zr-Mo-Sn alloys has been simulated in terms of thermodynamics. The thermodynamic properties of molybdenum and zirconium intermetallic compounds are calculated. It is demonstrated that, with consideration for their formation, the calculated compositions of aluminothermic blends and the forecasted extraction of target metals into an alloy are in good agreement with the data obtained during pilot tests.</p> <div class="credits"> <p class="dwt_author">Larionov, A. V.; Chumarev, V. M.; Udoeva, L. Yu.; Mansurova, A. N.; Rylov, A. N.; Raikov, A. Yu.; Aleshin, A. P.; Trubachev, M. V.</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-09-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">408</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/39670943"> <span id="translatedtitle">Diffusion in single crystal of melilite: interdiffusion of <span class="hlt">Al</span> + <span class="hlt">Al</span> vs. Mg + Si</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Interdiffusion coefficients of <span class="hlt">Al</span> + <span class="hlt">Al</span> vs. Mg + Si in the gehlenite–åkermanite system of melilite were determined by coupled\\u000a annealing of synthesized end-member single crystals. The observed diffusion coefficients for a couple-annealed sample vary\\u000a for about 2 orders of magnitude, showing strong dependence on the gehlenite–åkermanite composition: diffusion coefficient\\u000a observed at 1350 °C, for example, is 3 × 10?13</p> <div class="credits"> <p class="dwt_author">H. Nagasawa; T. Suzuki; M. Ito; M. Morioka</p> <p class="dwt_publisher"></p> <p class="publishDate">2001-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">409</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/47871365"> <span id="translatedtitle">Microstructural study of laser-clad Fe<span class="hlt">Al</span> bronze on <span class="hlt">Al</span>-Si alloy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Microstructure studies of laser-clad Fe-<span class="hlt">Al</span> bronze on an <span class="hlt">Al</span>-Si alloy were carried out by OM(optical microscope), SEM(scanning electron microscope), TEM(transmission electron microscope) and XRD(X ray diffraction) analyses. The cross-section of the laser-cladding was divided into clad region and transitional region. The clad region composes a matrix with a twin structure of needle-like and feathery appearance and a second phase of</p> <div class="credits"> <p class="dwt_author">A. H. Wang; C. S. Xie</p> <p class="dwt_publisher"></p> <p class="publishDate">2001-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">410</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/11207932"> <span id="translatedtitle">Transmission electron microscopy studies of squeeze cast <span class="hlt">Al-Al</span>N composites.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Aluminium-matrix composites containing approximately 45 vol.% <span class="hlt">Al</span>N particles were fabricated by melt infiltration of aluminium into an <span class="hlt">Al</span>N preform under a pressure up to 130 MPa. Three types of aluminium alloy (2024, 6060 and 5754) were used. The as-prepared composites were studied by light microscopy, scanning and transmission electron microscopies, and energy-dispersive X-ray spectroscopy. As a result of the melt infiltration process, the composites are very dense and the microstructure shows a homogeneous distribution of the reinforcement. The interfaces are clean with very little porosity. Composites with 2024 and 6060 matrices were carefully studied by transmission electron microscopy (TEM) and high resolution electron microscopy (HREM) after heat treatments. Dislocation density in the matrix of the reinforced material increases due to the difference in thermal expansion coefficients of aluminium alloys and <span class="hlt">Al</span>N. This can induce an accelerated ageing response of the coherent and semicoherent precipitations of age-hardened matrices. This behaviour has been studied in the 2024 and 6060 composites by using microhardness measurements and TEM. Reactions between the <span class="hlt">Al</span>N reinforcement and aluminium matrices (6060 and 5754) were observed and analysed by TEM. Matrices containing some of magnesium display a Mg<span class="hlt">Al</span>2O4 spinel formation at the <span class="hlt">Al</span>N/matrix interface. The spinel formation is probably due to the reaction between magnesium of the matrix and the thin <span class="hlt">Al</span>2O3 layer on the <span class="hlt">Al</span>N surfaces. This reaction can affect the mechanical behaviour of the composite infiltrated with the 5754 matrix. This has been confirmed by overageing some samples at high temperatures (300 degrees C and 550 degrees C) for 10 days in order to emphasize the interfacial reactions. PMID:11207932</p> <div class="credits"> <p class="dwt_author">Chédru, M.; Vicens, J.; Chermant, J. L.; Mordike, B. L.</p> <p class="dwt_publisher"></p> <p class="publishDate">2001-02-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">411</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/60713082"> <span id="translatedtitle">Surface structures of <span class="hlt">Al</span>-Pd-Mn and <span class="hlt">Al</span>-Cu-Fe icosahedral quasicrystals</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">In this dissertation, the author reports on the surface structure of i-<span class="hlt">Al</span>-Pd-Mn twofold, threefold, fivefold and i-<span class="hlt">Al</span>-Cu-Fe fivefold surfaces. The LEED studies indicate the existence of two distinct stages in the regrowth of all four surfaces after Ar{sup +} sputtering. In the first stage, upon annealing at relatively low temperature: 500K--800K (depending on different surfaces), a cubic phase appears. The</p> <div class="credits"> <p class="dwt_author">Shen</p> <p class="dwt_publisher"></p> <p class="publishDate">1999-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">412</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://cdsweb.cern.ch/record/1699332"> <span id="translatedtitle">Caracterizaci\\'on de austenita expandida generada por cementaci\\'on i\\'onica de aceros inoxidables. Estudio de la estabilidad <span class="hlt">frente</span> a la irradiaci\\'on con haces de iones ligeros energ\\'eticos</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">This thesis was focused on the surface modification with plasma discharge. Austenitic AISI 316L stainless steel sample was carburised under different experimental conditions and mechanical properties have been studied (thickness, lattice parameter, elemental composition, hardness, wear resistance and corrosion resistance). After that, steel substrates have been nitrided or carburised in order to analyse their stability under ion bombardment using a plasma focus device. Helium and deuterium were the gases used in 0, 1, 5, and 10 discharges. Optical and X-ray characterisations were used. Finally, using magnetron sputtering nitrided/carburised samples were coated with an <span class="hlt">Al</span>N thin film in order to study their stability under long treatments at high temperatures.</p> <div class="credits"> <p class="dwt_author">Molleja, Javier García</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">413</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/53906245"> <span id="translatedtitle">Antiferromagnetic behaviour of Tb2<span class="hlt">Al</span> alloy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The structural, thermal and magnetic properties ol the Tb2<span class="hlt">Al</span> alloy have been investigated by AC\\/DC magnetic susceptibility, specific heat, X-ray and neutron diffraction measurements. DC and AC-magnetic susceptibility results are consistent with an AFM order at TN = 52 K. The specific heat data show a lambda anomaly associated to the magnetic transition with a peak at 52 K (cord</p> <div class="credits"> <p class="dwt_author">D. P. Rojas; G. André; J. Rodríguez Fernández; J. Sánchez Marcos; L. Fernández Barquín; C. Echevarria</p> <p class="dwt_publisher"></p> <p class="publishDate">2011-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">414</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.springerlink.com/index/35466827815ru516.pdf"> <span id="translatedtitle">Prognosis and clinical varieties of <span class="hlt">ALS</span> disease</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">210 cases of <span class="hlt">ALS</span> disease in the period 1955–1979 are considered. Different parameters such as sex, age, duration and clinical course have been correlated with four clinical types: conventional, pseudopolyneuritic, pyramidal and bulbar. The age distribution shows a peak in the fifth decade of life. The sex ratio is 2.08?1. Considering together all the clinical types, the mean duration of</p> <div class="credits"> <p class="dwt_author">P. Mortara; D. Bardelli; M. Leone; D. Schiffer</p> <p class="dwt_publisher"></p> <p class="publishDate">1981-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">415</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://web.mit.edu/persci/people/adelson/patent_pdfs/void87.pdf"> <span id="translatedtitle">United States Patent [19] Burt et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">United States Patent [19] Burt et <span class="hlt">al</span>. [11] Patent Number: 4 , 6 98, 84 3 [45] Date of Patent: Oct, 43, 49, 50, 54, 55 [56] References Cited U.S. PATENT DOCUMENTS 3,737,855 6/1973 Cutaia.S. Patent Oct. 6, 1987 Sheet 1 of 3 4,698,843 #12;U.S. Patent Oct. 6, 1987 Sheet 2 of 3 4,698,843 #12;U</p> <div class="credits"> <p class="dwt_author">Adelson, Edward</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">416</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://web.mit.edu/persci/people/adelson/patent_pdfs/patent1985.pdf"> <span id="translatedtitle">United States Patent [19] Carlson et <span class="hlt">al</span>.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">United States Patent [19] Carlson et <span class="hlt">al</span>. [11] Patent Number: 4,523,230 [45] Date of Patent: Jun. 11 ............. 358/160, 163; 166; 167, 358/905, 21 R, 36; 382/49, 54 [56] References Cited U.S. PATENT DOCUMENTS 4 signals. 24 Claims, 8 Drawing Figures #12;U.S. Patent Jun. 11, 1985 Sheet 1 of 4 4,523,230 #12;U.S. Patent</p> <div class="credits"> <p class="dwt_author">Adelson, Edward</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">417</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/39857347"> <span id="translatedtitle">Intermetallic phases in <span class="hlt">Al</span>-Mn alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The intermetallic phases present in high-purity and commercial purity <span class="hlt">Al</span>-Mn alloys (up to 2% Mn) in as-cast and heat-treated conditions were extracted electrolytically in 10% HCl in methanol solution and identified by X-ray diffraction. As iron is known to increase the coarse cast-intermetallic particles and to cause refinement of the grain size after recrystallization, different amounts of iron (up to</p> <div class="credits"> <p class="dwt_author">Aruna Bahadur</p> <p class="dwt_publisher"></p> <p class="publishDate">1988-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">418</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2001PhuZ...32...84G"> <span id="translatedtitle">Euklid <span class="hlt">als</span> Physiker: Die Realgeltung der Geometrie</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Es lässt sich beweisen, dass die Winkelsumme in einem ebenen, euklidischen Dreieck 180 Grad beträgt. Ebenso ergibt sich, dass die Winkelsumme in einem Dreieck auf einer Kugeloberfläche größer <span class="hlt">als</span> 180 Grad ist. Auch der Satz des Pythagoras ist beweisbar. In allen Fällen beruhen die Beweise auf Euklids Parallelenaxiom. Das aber lässt sich nicht beweisen. Beweisbar aber ist, dass es in nicht-euklidischen Geomerien nicht gilt.</p> <div class="credits"> <p class="dwt_author">Genz, Henning</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">419</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TX5-4WSRDSV-2-13&_cdi=5581&_user=10&_orig=browse&_coverDate=01%2F31%2F2010&_sk=999689998&view=c&wchp=dGLbVzb-zSkWb&_valck=1&md5=be3b4d5793bccd5fb7320b7462a7523c&ie=/sdarticle.pdf"> <span id="translatedtitle">Mechanical properties of in situ <span class="hlt">Al</span> 2O 3 formed <span class="hlt">Al</span>–Si composite coating via atmospheric plasma spraying</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">In this study, mechanically alloyed <span class="hlt">Al</span>–12Si\\/SiO2 composite powder was deposited onto an aluminum substrate by atmospheric plasma spraying. The composite coating consisting of in situ formed <span class="hlt">Al</span>2O3 reinforced hypereutectic <span class="hlt">Al</span>–18Si matrix alloy was achieved. The produced coatings were extensively analyzed with respect to X-ray diffraction (XRD). The XRD patterns of the coatings include <span class="hlt">Al</span>, Si and <span class="hlt">Al</span>2O3 phase formation. Mechanical</p> <div class="credits"> <p class="dwt_author">O. Culha; C. Tekmen; M. Toparli; Y. Tsunekawa</p> <p class="dwt_publisher"></p> <p class="publishDate">2010-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">420</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/18802183"> <span id="translatedtitle">Formation and stability of transitional long-period superstructures in <span class="hlt">Al</span>-rich Ti-<span class="hlt">Al</span> single crystals</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The phase transition and thermal stability of long-period superstructures were examined in Ti-58.0 at.% <span class="hlt">Al</span>, Ti-60.0 at.% <span class="hlt">Al</span> and Ti-62.5 at.% <span class="hlt">Al</span> single crystals focusing on reflections based on sets of lattice planes parallel to {310)fcc. Some long-period superstructures appear accompanied by obscure coherent boundaries in the L10 matrix. It was found that the <span class="hlt">Al</span>5Ti3' structure distinguished from the <span class="hlt">Al</span>5Ti3</p> <div class="credits"> <p class="dwt_author">T. Nakano; K. Hayashi; Y. Umakoshi</p> <p class="dwt_publisher"></p> <p class="publishDate">2002-01-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_20");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return showDiv("page_2");' href="#">2</a> <a onClick='return showDiv("page_3");' href="#">3</a> <a onClick='return showDiv("page_4");' 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onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">421</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.me.concordia.ca/~mmedraj/papers/mg-al-mn.pdf"> <span id="translatedtitle">Advance View Proofs Thermodynamic Description of the Mg-Mn, <span class="hlt">Al</span>-Mn and Mg-<span class="hlt">Al</span>-Mn Systems</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">Advance View Proofs Thermodynamic Description of the Mg-Mn, <span class="hlt">Al</span>-Mn and Mg-<span class="hlt">Al</span>-Mn Systems Using-consistent thermodynamic model of the Mg-Mn, <span class="hlt">Al</span>-Mn and Mg-<span class="hlt">Al</span>-Mn systems has been developed. The major difference between work on the <span class="hlt">Al</span>-Mn system that uses the same model for the liquid phase reveals that better agreement</p> <div class="credits"> <p class="dwt_author">Medraj, Mamoun</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">422</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://hal.inria.fr/docs/00/24/51/44/PDF/ajp-rphysap_1983_18_12_763_0.pdf"> <span id="translatedtitle">Structures <span class="hlt">Al-Al</span>2O3-InP : Analyse des processus de drive et valuation des hauteurs</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">763 Structures <span class="hlt">Al-Al</span>2O3-InP : Analyse des processus de dérive et évaluation des hauteurs de photoémission interne de structures <span class="hlt">Al-Al</span>2O3-InP. Cette technique permet, entre autres, la mesure directe de la hauteur de barrière semiconducteur-isolant et le contrôle du remplissage des pièges d'interface. <span class="hlt">Al</span>2O3 est</p> <div class="credits"> <p class="dwt_author">Boyer, Edmond</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">423</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2004JPS...133..302T"> <span id="translatedtitle">Preparation and characterization of Ppy/<span class="hlt">Al</span> 2O 3/<span class="hlt">Al</span> used as a solid-state capacitor</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The characteristics of a solid-state capacitor based on Ppy (polypyrrole)/<span class="hlt">Al</span> 2O 3/<span class="hlt">Al</span> prepared by the constant-current method are investigated. The surface composition of aluminum (<span class="hlt">Al</span>) foil analyzed to by electron spectroscopy for chemical analysis (ESCA) is found to be <span class="hlt">Al</span>O 2- when the native oxide on the <span class="hlt">Al</span> foil is etched by 0.1 M NaOH. Three stages are defined from the relationship between the potential and the electrolysis time in simultaneously preparing the dielectric layer (<span class="hlt">Al</span> 2O 3) and the conducting polymer (Ppy) on <span class="hlt">Al</span> foil etched with 0.1 M NaOH. The experimental results indicate that only stage one, i.e. the formation of <span class="hlt">Al</span> 2O 3, occurs in the preparation of Ppy/<span class="hlt">Al</span> 2O 3/<span class="hlt">Al</span> at a current density greater than 0.9 mA cm -2. A higher concentration of pyrrole enhances the nucleation of Ppy within the pores of <span class="hlt">Al</span> 2O 3 such that the period of the first stage decrease and the second stage of the propagation of Ppy is increased. The leakage current of Ppy/<span class="hlt">Al</span> 2O 3/<span class="hlt">Al</span> rises from 0.009 to 0.405 ?A cm -2 with increase in the concentration of pyrrole in preparing Ppy/<span class="hlt">Al</span> 2O 3/<span class="hlt">Al</span> from 0.05 to 0.15 M. Raising the cut-off potential for preparing Ppy/<span class="hlt">Al</span> 2O 3/<span class="hlt">Al</span> from 20 to 60 V increases the thickness of <span class="hlt">Al</span> 2O 3 and lowers the capacity of Ppy/<span class="hlt">Al</span> 2O 3/<span class="hlt">Al</span> from 478.5 to 174.2 nF cm -2.</p> <div class="credits"> <p class="dwt_author">Tsai, Ming-Liao; Chen, Pei-Jiun; Do, Jing-Shan</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">424</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/47646101"> <span id="translatedtitle">A crystal plasticity materials constitutive model for polysynthetically-twinned ?Ti<span class="hlt">Al</span> + ? 2 Ti 3 <span class="hlt">Al</span> single crystals</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Deformation behavior of polysynthetically-twinned lamellar ?-Ti<span class="hlt">Al</span> + ?2-Ti3<span class="hlt">Al</span> single crystals has been analyzed using a three-dimensional, isothermal, rate-dependent, large-strain, crystal-plasticity based materials constitutive model. Within the model it is assumed that plastic deformation parallel to the ?-Ti<span class="hlt">Al</span>\\/?2-Ti3<span class="hlt">Al</span> lamellar boundaries is controlled by the softer ?-Ti<span class="hlt">Al</span> phase while deformation which contains a component normal to these boundaries is dominated by the</p> <div class="credits"> <p class="dwt_author">M. Grujicic; S. Batchu</p> <p class="dwt_publisher"></p> <p class="publishDate">2001-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">425</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40940305"> <span id="translatedtitle">Ni<span class="hlt">Al–Al</span> 2O 3 composites produced by pulse plasma sintering with the participation of the SHS reaction</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">The paper presents the results of examinations of the Ni<span class="hlt">Al–Al</span>2O3 sinters (13, 38 and 55vol% of <span class="hlt">Al</span>2O3) produced from a mixture of nickel, aluminum and alumina powders in a single technological process, using the pulse plasma sintering (PPS) method. By subjecting the elemental powders to a PPS process for 900s, we obtained Ni<span class="hlt">Al–Al</span>2O3 composites of a hardness ranging from 480</p> <div class="credits"> <p class="dwt_author">A. Michalski; J. Jaroszewicz; M. Rosi?ski; D. Siemiaszko</p> <p class="dwt_publisher"></p> <p class="publishDate">2006-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">426</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2015JMEP..tmp...14P"> <span id="translatedtitle">Softening Kinetics in High <span class="hlt">Al</span> and High <span class="hlt">Al</span>-Nb-Microalloyed Steels</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Double-hit torsion tests were performed in order to study the effect of high <span class="hlt">Al</span> levels (up to 2 wt.%) and Nb microalloying (up to 0.07 wt.%) on the static softening kinetics of 0.2%C-2%Mn steels. The addition of 1%<span class="hlt">Al</span> leads to a delay in the softening kinetics due to solute-drag effect, equivalent to that exerted by 0.027%Nb. For the 2%<span class="hlt">Al</span> steels, at temperatures below 1000 °C, ? ? ? phase transformation occurs after deformation, resulting in a larger retardation of the softening kinetics. At temperatures higher than 1000 °C, Nb in solid solution also contributes to the retardation of the static softening kinetics, and at lower temperatures NbC strain-induced precipitation leads to incomplete softening for the 1%<span class="hlt">Al</span> steel, and to a complex interaction between softening, phase transformation, and NbC strain-induced precipitation for the 2%<span class="hlt">Al</span>-Nb steels. The effect of <span class="hlt">Al</span> on the static softening kinetics was quantified and introduced in a model developed in previous works for the prediction of the austenite microstructural evolution. In order to validate the results of the model, multipass torsion tests were carried out at conditions representative of hot strip and plate rolling mills. Model predictions show reasonable agreement with the results obtained at different deformation conditions.</p> <div class="credits"> <p class="dwt_author">Pereda, B.; Aretxabaleta, Z.; López, B.</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">427</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2009JTST...18..536G"> <span id="translatedtitle">Fe<span class="hlt">Al</span> and Nb<span class="hlt">Al</span>3 Intermetallic-HVOF Coatings: Structure and Properties</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Transition metal aluminides in their coating form are currently being explored in terms of resistance to oxidation and mechanical behavior. This interest in transition metal aluminides is mainly due to the fact that their high <span class="hlt">Al</span> content makes them attractive for high-temperature applications. This is also a reason to study their resistance to wear; they may be suitable for use in applications that produce a lot of wear in aggressive environments, thus replacing established coating materials. In this study, the microstructure, microhardness, and wear and oxidation performance of Fe<span class="hlt">Al</span> and Nb<span class="hlt">Al</span>3 coatings produced by high-velocity oxy-fuel spraying are evaluated with two main aims: (i) to compare these two coating systems—a commonly studied aluminide (Fe<span class="hlt">Al</span>) and, Nb<span class="hlt">Al</span>3, an aluminide whose deposition by thermal spraying has not been attempted to date—and (ii) to analyze the relationship between their microstructure, composition and properties, and so clarify their wear and oxidation mechanisms. In the present study, the higher hardness of niobium aluminide coatings did not correlate with a higher wear resistance and, finally, although pesting phenomena (disintegration in oxidizing environments) were already known of in bulk niobium aluminides, here their behavior in the coating form is examined. It was shown that such accelerated oxidation was inevitable with respect to the better resistance of Fe<span class="hlt">Al</span>, but further improvements are foreseen by addition of alloying elements in that alloy.</p> <div class="credits"> <p class="dwt_author">Guilemany, J. M.; Cinca, N.; Dosta, S.; Cano, I. G.</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-12-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">428</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3472785"> <span id="translatedtitle">Room Temperature Radiolytic Synthesized Cu@Cu<span class="hlt">Al</span>O2-<span class="hlt">Al</span>2O3 Nanoparticles</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p class="result-summary">Colloidal Cu@Cu<span class="hlt">Al</span>O2-<span class="hlt">Al</span>2O3 bimetallic nanoparticles were prepared by a gamma irradiation method in an aqueous system in the presence of polyvinyl pyrrolidone (PVP) and isopropanol respectively as a colloidal stabilizer and scavenger of hydrogen and hydroxyl radicals. The gamma irradiation was carried out in a 60Co gamma source chamber with different doses up to 120 kGy. The formation of Cu@Cu<span class="hlt">Al</span>O2-<span class="hlt">Al</span>2O3 nanoparticles was observed initially by the change in color of the colloidal samples from colorless to brown. Fourier transform infrared spectroscopy (FTIR) confirmed the presence of bonds between polymer chains and the metal surface at all radiation doses. Results of transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDX), and X-ray diffraction (XRD) showed that Cu@Cu<span class="hlt">Al</span>O2-<span class="hlt">Al</span>2O3 nanoparticles are in a core-shell structure. By controlling the absorbed dose and precursor concentration, nanoclusters with different particle sizes were obtained. The average particle diameter increased with increased precursor concentration and decreased with increased dose. This is due to the competition between nucleation, growth, and aggregation processes in the formation of nanoclusters during irradiation. PMID:23109893</p> <div class="credits"> <p class="dwt_author">Abedini, Alam; Saion, Elias; Larki, Farhad; Zakaria, Azmi; Noroozi, Monir; Soltani, Nayereh</p> <p class="dwt_publisher"></p> <p class="publishDate">2012-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">429</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/22261715"> <span id="translatedtitle">A comparative wear study on <span class="hlt">Al</span>-Li and <span class="hlt">Al</span>-Li/SiC composite</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Aluminum-lithium based unreinforced (<span class="hlt">Al</span>-8090) alloy and <span class="hlt">Al</span>-8090/SiCp/17 vol.% metal matrix composite produced by extrusion after spray co-deposition. A dry ball-on disk wear test was carried out for both alloy and composite. The tests were performed against an <span class="hlt">Al</span>{sub 2}O{sub 3} ball, 10 mm in diameter, at room temperature and in laboratory air conditions with a relative humidity of 40-60%. Sliding speed was chosen as 1.0 ms{sup ?1} and normal loads of 1.0, 3.0 and 5.0 N were employed at a constant sliding distance of 1000 m. The wear damage on the specimens was evaluated via measurement of wear depth and diameter. Microstructural and wear characterization was carried out via scanning electron microscopy (SEM). The results showed that wear loss of the <span class="hlt">Al</span>-8090/SiC composite was less than that of the <span class="hlt">Al</span>-8090 matrix alloy. Plastic deformation observed on the wear surface of the composite and the matrix alloy, and the higher the applied load the greater the plastic deformation. Scanning electron microscopy examinations of wear tracks also reveal that delamination fracture was the dominant wear mechanism during the wear progression. Friction coefficient was maximum at the low applied load in the case of the <span class="hlt">Al</span>-8090/SiC composite while a gradual increase was observed with applied load for the matrix alloy.</p> <div class="credits"> <p class="dwt_author">Okumus, S. Cem, E-mail: cokumus@sakarya.edu.tr; Karslioglu, Ramazan, E-mail: cokumus@sakarya.edu.tr; Akbulut, Hatem, E-mail: cokumus@sakarya.edu.tr [Sakarya University Engineering Faculty, Department of Metallurgical and Materials Engineering, Esentepe Campus, 54187, Sakarya (Turkey)</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-12-16</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">430</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2013AIPC.1569..360O"> <span id="translatedtitle">A comparative wear study on <span class="hlt">Al</span>-Li and <span class="hlt">Al</span>-Li/SiC composite</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Aluminum-lithium based unreinforced (<span class="hlt">Al</span>-8090) alloy and <span class="hlt">Al</span>-8090/SiCp/17 vol.% metal matrix composite produced by extrusion after spray co-deposition. A dry ball-on disk wear test was carried out for both alloy and composite. The tests were performed against an <span class="hlt">Al</span>2O3 ball, 10 mm in diameter, at room temperature and in laboratory air conditions with a relative humidity of 40-60%. Sliding speed was chosen as 1.0 ms-1 and normal loads of 1.0, 3.0 and 5.0 N were employed at a constant sliding distance of 1000 m. The wear damage on the specimens was evaluated via measurement of wear depth and diameter. Microstructural and wear characterization was carried out via scanning electron microscopy (SEM). The results showed that wear loss of the <span class="hlt">Al</span>-8090/SiC composite was less than that of the <span class="hlt">Al</span>-8090 matrix alloy. Plastic deformation observed on the wear surface of the composite and the matrix alloy, and the higher the applied load the greater the plastic deformation. Scanning electron microscopy examinations of wear tracks also reveal that delamination fracture was the dominant wear mechanism during the wear progression. Friction coefficient was maximum at the low applied load in the case of the <span class="hlt">Al</span>-8090/SiC composite while a gradual increase was observed with applied load for the matrix alloy.</p> <div class="credits"> <p class="dwt_author">Okumus, S. Cem; Karslioglu, Ramazan; Akbulut, Hatem</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-12-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">431</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/1996JAP....79.4854Q"> <span id="translatedtitle">The protective coatings of NdFeB magnets by <span class="hlt">Al</span> and <span class="hlt">Al</span>(Fe)</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">NdFeB permanent magnets are coated by two different methods, dip coating and evaporation coating, with <span class="hlt">Al</span>. It is found that an intermetallic reaction has occurred and formed a dominant phase of Fe<span class="hlt">Al</span>2.5Bx at the interface between the <span class="hlt">Al</span> coating and the magnet material. Such reaction enhances strong bonding between the coating and the magnet. When <span class="hlt">Al</span>(Fe) is used for the coating, no detectable intermetallic phase is observed, and therefore the amount of magnet material is conserved. We have studied the effect of the intermetallic phase on corrosion protection of the magnet. It is found that this phase is less resistive towards HNO3 solution than pure <span class="hlt">Al</span>; but it is more resistive towards NaOH and NaCl. The investigation of the changes of microstructures of the coatings under different tempering conditions have also been carried out. The results show that the heat treatment at 500 °C for 10 min for a ˜ 2 ?m thick <span class="hlt">Al</span> coating by evaporation can produce an optimal layer of intermetallics. If the temperature is too low, the coating will not adhere to the magnet or if too high, it will fully react with the magnet and produce a rough coating surface.</p> <div class="credits"> <p class="dwt_author">Qin, C.-D.; Li, A. S. K.; Ng, D. H. L.</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-04-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">432</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25170561"> <span id="translatedtitle">TEM and HRTEM Characterization of Ti<span class="hlt">Al</span> Diffusion Bonds Using Ni/<span class="hlt">Al</span> Nanolayers.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Diffusion bonding of Ti<span class="hlt">Al</span> alloys can be enhanced by the use of reactive nanolayer thin films as interlayers. Using these interlayers, it is possible to reduce the conventional bonding conditions (temperature, time, and pressure) and obtain sound and reliable joints. The microstructural characterization of the diffusion bond interfaces is a fundamental step toward understanding and identifying the bonding mechanisms and relating them to the strength of the joints. The interface of Ti<span class="hlt">Al</span> samples joined using Ni/<span class="hlt">Al</span> nanolayers was characterized by transmission electron microscopy and scanning transmission electron microscopy. Microstructural characterization of the bond revealed that the interfaces consist of several thin layers of different composition and grain size (nanometric and micrometric). The bonding temperature (800, 900, or 1,000°C) determines the grain size and thickness of the layers present at the interface. Phase identification by high-resolution transmission electron microscopy combined with fast Fourier transform and electron energy-loss spectroscopy analyses reveals the presence of several intermetallic compounds: <span class="hlt">Al</span>TiNi, Ni<span class="hlt">Al</span>, and <span class="hlt">Al</span>2TiNi. For bonds produced at 800 and 900°C, nanometric grains of Ti were detected at the center of the interface. PMID:25170561</p> <div class="credits"> <p class="dwt_author">Simões, Sónia; Viana, Filomena; Ramos, Ana S; Vieira, Maria T; Vieira, Manuel F</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-08-29</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">433</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/6545210"> <span id="translatedtitle">An <span class="hlt">ALS</span> (Advanced Light Source) handbook</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">This booklet aims to provide the prospective user of the Advanced Light Source with a concise description of the radiation a researcher might expect at his or her experimental station. The focus is therefore on the characteristics of the light that emerges from insertion devices and bending magnets and on how components of the beam lines further alter the properties of the radiation. The specifications and operating parameters of the <span class="hlt">ALS</span> injection system and storage ring are of only peripheral interest. To this end, Sections 3 and 5 and most of Section 4 are devoted to summary presentations, by means of performance plots and tabular compilations, of radiation characteristics at the <span class="hlt">ALS</span>--spectral brightness, flux, coherent power, resolution, time structure, etc.--assuming a representative set of four undulators and one wiggler and a corresponding set of five beam lines. As a complement to these performance summaries, Section 1 is a general introductory discussion of synchrotron radiation and the <span class="hlt">ALS</span>, and Section 2 provides a compendious introduction to the characteristics of synchrotron radiation from bending magnets, wigglers, and undulators. In addition, Section 4 briefly introduces the theory of diffraction grating and crystal monochromators. 15 refs., 28 figs., 5 tabs.</p> <div class="credits"> <p class="dwt_author">Not Available</p> <p class="dwt_publisher"></p> <p class="publishDate">1988-11-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">434</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/20777188"> <span id="translatedtitle">Energetic ion bombarded Fe/<span class="hlt">Al</span> multilayers</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The utility of ion-assisted deposition is investigated to explore the possibility of counteracting the deficiency of back-reflected current of Ar neutrals in the case of lighter elements such as <span class="hlt">Al</span>. A range of energetically ion bombarded Fe/<span class="hlt">Al</span> multilayers sputtered with applied surface bias of 0, -200, or -400 V were deposited onto Si(111) substrates in an argon atmosphere of 4 mTorr using a computer controlled dc magnetron sputtering system. Grazing incidence reflectivity and rocking curve scans by synchrotron x rays of wavelength of 1.38 A were used to investigate the structures of the interfaces produced. Substantial evidence has been gathered to suggest the gradual suppression of interfacial mixing and reduction in interfacial roughness with increases of applied bias. The densification of the <span class="hlt">Al</span> microstructure was noticeable and may be a consequence of resputtering attributable to the induced ion bombardment. The average interfacial roughnesses were calculated for the 0, -200, and -400 V samples to be 7{+-}0.5, 6{+-}0.5, and 5{+-}0.5 A respectfully demonstrating a 30% improvement in interface quality. Data from rocking curve scans point to improved long-range correlated roughness in energetically deposited samples. The computational code based on the recursive algorithm developed by Parratt [Phys. Rev. 95, 359 (1954)] was successful in the simulation of the specular reflectivity curves.</p> <div class="credits"> <p class="dwt_author">Al-Busaidy, M.S.; Crapper, M.D. [College Science, Physics Department, Sultan Qaboos University, P.O. Box 36, Al-Khod 123 (Oman); Department of Physics, Loughborough University, Loughborough (United Kingdom)</p> <p class="dwt_publisher"></p> <p class="publishDate">2006-05-15</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">435</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2008AIPC..999..257V"> <span id="translatedtitle">Devitrification of <span class="hlt">Al</span>-Y-Ni Glasses</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Crystallization of gas-atomized <span class="hlt">Al</span>-4.3Y-3.8Ni alloy powder during consolidation has been studied ex-situ in a transmission electron microscope using high-resolution lattice imaging together with the image simulations, selected-area diffraction and energy-dispersive X-ray spectrometry experiments. The as-atomized powder is predominantly amorphous but some particles others show evidence of decomposition. On the application of heat and pressure two types of decomposition product are formed initially; equiaxed nanoscale ?-<span class="hlt">Al</span> grains embedded in an amorphous matrix, and dendritic aluminum grains containing complex ordered structures. The ordered structures in the ?-<span class="hlt">Al</span> were identified as Guinier-Preston like zones: thin sheets of solute rich material parallel to {100} and {110} aluminum planes with ordered cubic symmetry. Amorphous and micro-crystalline phases are in between the aluminum-rich regions. The second and third stages of crystallization involve the conversion of these ordered phases and embryonic precipitates to the better-known binary and ternary compounds.</p> <div class="credits"> <p class="dwt_author">Vasiliev, A. L.; Aindow, M.</p> <p class="dwt_publisher"></p> <p class="publishDate">2008-04-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">436</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/15014726"> <span id="translatedtitle">KCAT, Xradia, <span class="hlt">ALS</span> and APS Performance Summary</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">At Lawrence Livermore National Laboratory (LLNL) particular emphasis is being placed on the nondestructive characterization (NDC) of components, subassemblies and assemblies of millimeter-size extent with micrometer-size features (mesoscale). These mesoscale objects include materials that vary widely in composition, density, geometry and embedded features. Characterizing these mesoscale objects is critical for corroborating the physics codes that underlie LLNL's Stockpile Stewardship mission. In this report we present results from our efforts to quantitatively characterize the performance of several x-ray systems in an effort to benchmark existing systems and to determine which systems may have the best potential for our mesoscale imaging needs. Several different x-ray digital radiography (DR) and computed tomography (CT) systems exist that may be applicable to our mesoscale object characterization requirements, including microfocus and synchrotron systems. The systems we have benchmarked include KCAT (LLNL developed) and Xradia {mu}XCT (Xradia, Inc., Concord, CA), both microfocus systems, and Beamline 1-ID at the Advance Photon Source (APS) and the Tomography Beamline at the Advanced Light Source (<span class="hlt">ALS</span>), both synchrotron based systems. The <span class="hlt">ALS</span> Tomography Beamline is a new installation, and the data presented and analyzed here is some of the first to be acquired at the facility. It is important to note that the <span class="hlt">ALS</span> system had not yet been optimized at the time we acquired data. Results for each of these systems has been independently documented elsewhere. In this report we summarize and compare the characterization results for these systems.</p> <div class="credits"> <p class="dwt_author">Waters, A; Martz, H; Brown, W</p> <p class="dwt_publisher"></p> <p class="publishDate">2004-09-30</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">437</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=20070021778&hterms=Ni3Al&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DNi3Al"> <span id="translatedtitle">Solidification Behavior of gamma'-Ni3<span class="hlt">Al</span> Containing Alloys in the Ni-<span class="hlt">Al</span>-O System</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The chemical activities of <span class="hlt">Al</span> and Ni in gamma(prime)-Ni3<span class="hlt">Al</span>-containing systems were measured using the multi-cell Knudsen effusion-cell mass spectrometry technique (multi-cell KEMS), over the composition range 8 - 32 at.%<span class="hlt">Al</span> and temperature range T = 1400 - 1750 K. From these measurements a better understanding of the equilibrium solidification behaviour of gamma(prime)-Ni3<span class="hlt">Al</span>-containing alloys in the Ni-<span class="hlt">Al</span>-O system was established. Specifically, these measurements revealed that (1) gamma(prime)-Ni3<span class="hlt">Al</span> forms via the peritectiod reaction, gamma + Beta (+ A12O3) = gamma (prime) (+ <span class="hlt">Al</span>2O3), at 1633 +/- 1 K, (2) the {gamma + Beta + <span class="hlt">Al</span>2O3} phase field is stable over the temperature range 1633 through 1640 K, and (3) equilibrium solidification occurs by the eutectic reaction, L (+ <span class="hlt">Al</span>2O3) = gamma + Beta (+ <span class="hlt">Al</span>2O3), at 1640 +/- 1 K and a liquid composition of 24.8 +/- 0.2 at.%<span class="hlt">Al</span> (at an unknown oxygen content). When projected onto the Ni-<span class="hlt">Al</span> binary, this behaviour is inconsistent with the current Ni-<span class="hlt">Al</span> phase diagram and a new diagram is proposed. This new Ni-<span class="hlt">Al</span> phase diagram explains a number of unusual steady-state solidification structures reported previously and provides a much simpler reaction scheme in the vicinity of the gamma(prime)-Ni3<span class="hlt">Al</span> phase field.</p> <div class="credits"> <p class="dwt_author">Copland, Evan</p> <p class="dwt_publisher"></p> <p class="publishDate">2007-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">438</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19890005862&hterms=rare+earth+transition+metals+intermetallic&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Drare%2Bearth%2Btransition%2Bmetals%2Bintermetallic"> <span id="translatedtitle">The oxidation of Ni-rich Ni-<span class="hlt">Al</span> intermetallics</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The oxidation of Ni-<span class="hlt">Al</span> intermetallic alloys in the beta-Ni<span class="hlt">Al</span> phase field and in the two phase beta-Ni<span class="hlt">Al</span>/gamma'-Ni3<span class="hlt">Al</span> phase field has been studied between 1000 and 1400 C. The stoichiometric beta-Ni<span class="hlt">Al</span> alloy doped with Zr was superior to other alloy compositions under cyclic and isothermal oxidation. The isothermal growth rates did not increase monotonically as the alloy <span class="hlt">Al</span> content was decreased. The characteristically ridged alpha-<span class="hlt">Al</span>2O3 scale morphology, consisting of cells of thin, textured oxide with thick growth ridges at cell boundaries, forms on oxidized beta-Ni<span class="hlt">Al</span> alloys. The correlation of scale features with isothermal growth rates indicates a predominant grain boundary diffusion growth mechanism. The 1200 C cyclic oxidation resistance decreases near the lower end of the beta-Ni<span class="hlt">Al</span> phase field.</p> <div class="credits"> <p class="dwt_author">Doychak, Joseph; Smialek, James L.; Barrett, Charles A.</p> <p class="dwt_publisher"></p> <p class="publishDate">1988-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">439</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=20010060374&hterms=NiAl&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3DNiAl"> <span id="translatedtitle">Creep and Toughness of Cryomilled Ni<span class="hlt">Al</span> Containing Cr</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Ni<span class="hlt">Al-Al</span>N + Cr composites were produced by blending cryomilled Ni<span class="hlt">Al</span> powder with approx. 10 vol % Cr flakes. In comparison to the as-consolidated matrices, hot isostatically pressed Cr-modified materials did not demonstrate any significant improvement in toughness. Hot extruded Ni<span class="hlt">Al-Al</span>N+10.5Cr, however, possessed a toughness twice that determine for the base Ni<span class="hlt">Al-Al</span>N alloy. Measurement of the 1200 to 1400 K plastic flow properties revealed that the strength of the composites was completely controlled by the properties of the Ni<span class="hlt">Al-Al</span>N matrices. This behavior could be successfully modeled by the Rule-of-Mixtures, where load is shed from the weak Cr to the strong matrix.</p> <div class="credits"> <p class="dwt_author">Whittenberger, J. Daniel; Aikin, Beverly; Salem, Jon</p> <p class="dwt_publisher"></p> <p class="publishDate">2000-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">440</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19900037800&hterms=Ni3Al&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3DNi3Al"> <span id="translatedtitle">The oxidation of Ni-rich Ni-<span class="hlt">Al</span> intermetallics</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The oxidation of Ni-<span class="hlt">Al</span> intermetallic alloys in the beta-Ni<span class="hlt">Al</span> phase field and in the two phase beta-Ni<span class="hlt">Al</span>/gamma'-Ni3<span class="hlt">Al</span> phase field has been studied between 1000 and 1400 C. The stoichiometric beta-Ni<span class="hlt">Al</span> alloy doped with Zr was superior to other alloy compositions under cyclic and isothermal oxidation. The isothermal growth rates did not increase monotonically as the alloy <span class="hlt">Al</span> content was decreased. The characteristically ridged alpha-<span class="hlt">Al</span>203 scale morphology, consisting of cells of thin, textured oxide with thick growth ridges at cell boundaries, forms on oxidized beta-Ni<span class="hlt">Al</span> alloys. The correlation of scale features with isothermal growth rates indicates a predominant grain boundary diffusion growth mechanism. The 1200 C cyclic oxidation resistance decreases near the lower end of the beta-Ni<span class="hlt">Al</span> phase field.</p> <div class="credits"> <p class="dwt_author">Doychak, J.; Smialek, J. L.; Barrett, C. A.</p> <p class="dwt_publisher"></p> <p class="publishDate">1989-01-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_21");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return showDiv("page_2");' href="#">2</a> <a onClick='return showDiv("page_3");' href="#">3</a> <a onClick='return showDiv("page_4");' 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onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">441</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2012-12-11/pdf/2012-29868.pdf"> <span id="translatedtitle">77 FR 73732 - In the Matter of the Amendment of the Designation of <span class="hlt">al</span>-Qa'ida in Iraq, aka Jam'at <span class="hlt">al</span> Tawhid wa...</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013</a></p> <p class="result-summary">...<span class="hlt">al</span>-Rafidayn, aka The Organization of <span class="hlt">al</span>-Jihad's Base of Operations in Iraq, aka <span class="hlt">al</span>-Qaida of Jihad in Iraq, aka <span class="hlt">al</span>-Qaida in Iraq, aka <span class="hlt">al</span>-Qaida in Mesopotamia, aka <span class="hlt">al</span>-Qaida in the Land of the Two Rivers, aka <span class="hlt">al</span>-Qaida of the...</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate">2012-12-11</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">442</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2012-01-26/pdf/2012-1537.pdf"> <span id="translatedtitle">77 FR 4083 - Amendment of the Designation of <span class="hlt">al</span>-Qa'ida in Iraq, et <span class="hlt">al</span>. as a Specially Designated Global...</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013</a></p> <p class="result-summary">...<span class="hlt">al</span>-Rafidayn, aka The Organization of <span class="hlt">al</span>- Jihad's Base of Operations in Iraq, aka <span class="hlt">al</span>-Qaida of Jihad in Iraq, aka <span class="hlt">al</span>-Qaida in Iraq, aka <span class="hlt">al</span>-Qaida in Mesopotamia, aka <span class="hlt">al</span>-Qaida in the Land of the Two Rivers, aka <span class="hlt">al</span>-Qaida of the...</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate">2012-01-26</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">443</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2012-01-26/pdf/2012-1538.pdf"> <span id="translatedtitle">77 FR 4082 - Review and Amendment of the Designation of <span class="hlt">al</span>-Qa'ida in Iraq, et <span class="hlt">al</span>. as a Foreign Terrorist...</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013</a></p> <p class="result-summary">...<span class="hlt">al</span>-Rafidayn, aka The Organization of <span class="hlt">al</span>-Jihad's Base of Operations in Iraq, aka <span class="hlt">al</span>-Qaida of Jihad in Iraq, aka <span class="hlt">al</span>-Qaida in Iraq, aka <span class="hlt">al</span>-Qaida in Mesopotamia, aka <span class="hlt">al</span>-Qaida in the Land of the Two Rivers, aka <span class="hlt">al</span>-Qaida of the...</p> <div class="credits"> <p class="dwt_author"></p> <p class="dwt_publisher"></p> <p class="publishDate">2012-01-26</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">444</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/1997PhDT........77Z"> <span id="translatedtitle">Phase equilibria and solidification of <span class="hlt">Al</span>-rich <span class="hlt">Al</span>-Mg-Cu alloys</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The thermodynamic and phase equilibrium data of the ternary <span class="hlt">Al</span>-Mg-Cu system has been critically reviewed and modeled thermodynamically using our own assessments for the binary <span class="hlt">Al</span>-Mg and Mg-Cu systems and Saunders' assessment of <span class="hlt">Al</span>-Cu. A thermodynamic description for the ternary <span class="hlt">Al</span>-Mg-Cu system was obtained through optimization using the phase equilibrium data and thermodynamic data available in the literature. All binary intermetallic phases are assumed to have negligible ternary solubility. There are five ternary intermetallic phases; three of them are taken to be line compounds and two are assumed to be semi-stoichiometric phases. Extensive experimental data are available in the <span class="hlt">Al</span>-rich corner, particularly for the <span class="hlt">Al</span>-rich ternary eutectic. The calculated phase equilibria in the <span class="hlt">Al</span>-rich corner are in good agreement with experimental data. The calculated phase equilibria in the Mg-rich corner fit the experimental data available quantitatively, but may not fit as well as those in the <span class="hlt">Al</span>-rich corner. However, the calculated phase equilibria in the Cu-rich corner are only topologically correct; the lack of experimental data in that corner leaves the phase relationships undetermined. Those results can serve as a guide for future materials researchers to carry out key experiments to establish the phase equilibria in that portion of the system. An integrated approach coupling phase diagram calculation with solidification models was employed to calculate the paths of solidification for multicomponent alloys. A one-dimensional modified Scheil model was used to calculate the microsegregation during the course of solidification of <span class="hlt">Al</span>-rich <span class="hlt">Al</span>-Mg-Cu ternary alloys. Calculated results for fraction of solid formed during the course of solidification and concentration profiles across the dendrites or cells were compared with data obtained from batch-type and directional solidification experiments. While significant discrepancies were observed between the calculation using the basic Scheil model and the experimental data, the calculated results incorporating back diffusion in the solid approach the experimental data.</p> <div class="credits"> <p class="dwt_author">Zuo, Yue</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">445</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2013JMEP...22.2098S"> <span id="translatedtitle">The Nature of Interfaces in <span class="hlt">Al</span>-1050/<span class="hlt">Al</span>-1050 and <span class="hlt">Al</span>-1050/Mg-AZ31 Couples Joined by Magnetic Pulse Welding (MPW)</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The microstructure and the phase composition of the interfaces of <span class="hlt">Al</span>-1050/<span class="hlt">Al</span>-1050 and <span class="hlt">Al</span>-1050/Mg-AZ31 magnetic pulse welding (MPW) joints were characterized by SEM and TEM analyses. The mechanical properties were tested by nanoindentation. Properties of the <span class="hlt">Al</span>-1050/<span class="hlt">Al</span>-1050 interface joint were established. The interface is almost free from <span class="hlt">Al</span>3Fe precipitates, which are present in the base metal. The hardness value is higher than that of the base metal; however, values of the Young's modulus of the interface and base metal are similar. It was suggested that the interface evolution in the <span class="hlt">Al</span>-1050/<span class="hlt">Al</span>-1050 system includes local melting and rapid solidification of the base materials. A wavy shaped heterogeneous interface was detected in the <span class="hlt">Al</span>-1050/Mg-AZ31 joints. Some areas are free from visible intermetallic phases (IMPs), while others contain pockets of relatively coarse intermetallic precipitates. The presence of a relatively large fraction of globular porosity at the interface indicates that local melting takes place in the course of MPW. TEM characterization of regions free of IMPs at the interface reveals regions consisting of fcc supersaturated <span class="hlt">Al</span>-Mg solid solution, apparently formed as a result of local mechanical alloying during MPW. In other regions, the composition and structure correspond to the Mg17<span class="hlt">Al</span>12 phase, which was probably formed by local melting and rapid solidification.</p> <div class="credits"> <p class="dwt_author">Stern, A.; Aizenshtein, M.; Moshe, G.; Cohen, S. R.; Frage, N.</p> <p class="dwt_publisher"></p> <p class="publishDate">2013-07-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">446</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2012ChPhL..29j8501L"> <span id="translatedtitle">Enhanced Light Extraction in <span class="hlt">Al</span>InGaN UV Light-Emitting Diodes by an Embedded <span class="hlt">AlN/Al</span>GaN Distributed Bragg Reflector</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">A novel kind of <span class="hlt">Al</span>InGaN ultraviolet (UV) light-emitting diode (LED) with an embedded <span class="hlt">AlN/Al</span>0.3Ga0.7N distributed Bragg reflector (DBR) is proposed to enhance light extraction efficiency (LEE). The simulation technique we adopt to calculate the LEE of LEDs is based on the theory of spontaneous emission in a layered medium, the well-known mode-matching technique and the scattering matrix approach. The <span class="hlt">AlN/Al</span>0.3Ga0.7N DBR was intentionally designed to have peak reflectivity at the LED emission wavelength and the optical properties of the DBR were simulated by using the transfer matrix method. A high LEE of 45.7% at 370 nm wavelength was predicted for a proposed <span class="hlt">Al</span>InGaN UV LED consisting of 24 periods of the <span class="hlt">AlN/Al</span>0.3Ga0.7N DBR, which is 1.5 times of that of the conventional <span class="hlt">Al</span>InGaN UV LED. The investigation shows that the <span class="hlt">AlN/Al</span>0.3Ga0.7N DBR grown on GaN templates with sapphire as a substrate by MOCVD can enhance the LEE effectively and would be very promising for the fabrication of high performance GaN-based UV LEDs.</p> <div class="credits"> <p class="dwt_author">Liu, Hui; Zhao, Heng; Hou, Jin; Liu, Dan; Gao, Yi-Hua</p> <p class="dwt_publisher"></p> <p class="publishDate">2012-10-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">447</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2015SurSc.633....1F"> <span id="translatedtitle">On the structural development during ultrathin amorphous <span class="hlt">Al</span>2O3 film growth on <span class="hlt">Al</span>(111) and <span class="hlt">Al</span>(100) surfaces by thermal oxidation</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The structural developments during growth of ultrathin amorphous <span class="hlt">Al</span>2O3 film on bare <span class="hlt">Al</span>(100) and <span class="hlt">Al</span>(111) surfaces, by dry thermal oxidation in the oxygen partial pressure range of 1 × 10- 5-1.0 Pa at 300 K, were investigated as function of the oxide-film thickness by (local) chemical state analysis using angle-resolved X-ray photoelectron spectroscopy in combination with low electron energy diffraction and cross-sectional high resolution transmission electron microscopy. The effect of the dielectric discontinuity, at the interfaces of the surficial <span class="hlt">Al</span>2O3 film has been determined quantitatively and has been subtracted from the observed chemical shifts of the core level photoelectron binding energies as well as from the observed Auger transition kinetic energies. It is revealed that ultrathin amorphous <span class="hlt">Al</span>2O3 films on the <span class="hlt">Al</span>(111) and <span class="hlt">Al</span>(100) surfaces experience remarkably different structural developments upon growth.</p> <div class="credits"> <p class="dwt_author">Flötotto, D.; Wang, Z. M.; Mittemeijer, E. J.</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-03-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">448</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/40059207"> <span id="translatedtitle">Ti\\/<span class="hlt">Al</span>\\/Ti\\/Au and V\\/<span class="hlt">Al</span>\\/V\\/Au Contacts to Plasma-Etched n <span class="hlt">Al</span> 0.58 Ga 0.42 N</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Cross-sectional transmission electron microscopy was used to study annealed Ti\\/<span class="hlt">Al</span>\\/Ti\\/Au and V\\/<span class="hlt">Al</span>\\/V\\/Au ohmic contacts to as-received\\u000a and plasma-etched n-<span class="hlt">Al</span>0.58Ga0.42N. The reaction depth of low-resistance V-based contacts to as-received n-<span class="hlt">Al</span>0.58Ga0.42N is very limited, unlike previously reported \\u0009Ti-based contacts to n-<span class="hlt">Al</span>\\u000a x\\u000a Ga1?x\\u000a N. In the present study, the Ti\\/<span class="hlt">Al</span>\\/Ti\\/Au contacts to as-received n-<span class="hlt">Al</span>0.58Ga0.42N required much higher annealing temperatures than the V-based</p> <div class="credits"> <p class="dwt_author">M. A. Miller; B. H. Koo; K. H. A. Bogart; S. E. Mohney</p> <p class="dwt_publisher"></p> <p class="publishDate">2008-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">449</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2011E%26PSL.304..468S"> <span id="translatedtitle">Resetting, errorchrons and the meaning of canonical CAI initial 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span> values</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The difference between the precise MC-ICPMS analyses of bulk calcium-aluminum-rich inclusion (CAI) fragments (e.g., Jacobsen et <span class="hlt">al</span>., 2008) and supra-canonical values obtained by micro-analytical techniques, e.g., laser ablation MC-ICPMS (Young et <span class="hlt">al</span>., 2005) and SIMS (Taylor et <span class="hlt">al</span>., 2005), at face value seems to be problematic and therefore leads many to dismiss claims of the solar system ( 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span>) 0 greater than ~ 5 × 10 -5 as spurious. Here we use mass balance calculations to quantify the importance of open system isotopic exchange during CAI evolution and show that in situ supra-canonical, in-situ canonical, and bulk canonical measurements can all exist for an individual CAI. The calculations describe mechanisms of isotopic exchange that may have occurred early (100's ka) and late (~ 1.5 Ma) in the solar nebula and much later (> 10's Ma) on parent body planetesimals. A range of possible modal mineralogies is modeled in order to populate the compositional space defined by in situ and bulk CAI measurements. In support of these simulated data we describe in situ measurements of 27<span class="hlt">Al</span>/ 24Mg, 25Mg/ 24Mg, and 26Mg/ 24Mg obtained by LA-MC-ICPMS comprising core-to-rim traverses across three CV3 CAIs. The CAIs exhibit distinctive Mg isotopic zoning profiles and varying abundances of daughter products of the short-lived nuclide 26<span class="hlt">Al</span> that are consistent with varying amounts of open system isotope exchange.</p> <div class="credits"> <p class="dwt_author">Simon, Justin I.; Young, Edward D.</p> <p class="dwt_publisher"></p> <p class="publishDate">2011-04-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">450</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25041826"> <span id="translatedtitle">Interfacial microstructure and growth mechanism of <span class="hlt">Al</span>4C3 in Grf/<span class="hlt">Al</span> composites fabricated by liquid pressure method.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">In this study, Grf/<span class="hlt">Al</span> composite was fabricated by liquid pressure method. The diffusion layer and the nucleation and growth of <span class="hlt">Al</span>4C3 were observed at the interface of Grf/<span class="hlt">Al</span> composites by TEM and HRTEM. The growth mechanism of <span class="hlt">Al</span>4C3 was analyzed in detail by crystallography theory. It was found that <span class="hlt">Al</span>4C3 had no phase relations with the carbon fiber. (0001) layer of <span class="hlt">Al</span>4C3 was parallel with main growth direction. Both the diffusion layer at the interface and crystal structure of <span class="hlt">Al</span>4C3 affected the shape of <span class="hlt">Al</span>4C3. At a certain position, <span class="hlt">Al</span>4C3 could connect two fibers when the fibers were close to each other. PMID:25041826</p> <div class="credits"> <p class="dwt_author">Xu, Wang; Chenchong, Wang; Zhichao, Zhang; Ping, Liang; Yanhua, Shi; Guofu, Zhang</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-10-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">451</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2009JNuM..395..162K"> <span id="translatedtitle">Interdiffusion between U(Mo,Pt) or U(Mo,Zr) and <span class="hlt">Al</span> or <span class="hlt">Al</span> A356 alloy</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Solid state reactions in chemical diffusion couples U-7 wt.%Mo-0.9 wt.%Pt/<span class="hlt">Al</span> at 580 °C and U-7 wt.%Mo-0.9 wt.%Pt/<span class="hlt">Al</span> A356 alloy, U-7 wt.%Mo-1 wt.%Zr/<span class="hlt">Al</span> and U-7 wt.%Mo-1 wt.%Zr/<span class="hlt">Al</span> A356 alloy at 550 °C were characterized. Results were obtained from optical and scanning electron microscopy, electron probe microanalysis and X-ray diffraction. The UAl 3, UAl 4 and <span class="hlt">Al</span> 20Mo 2U phases were identified in the interaction layers of ?U(Mo,Pt)/<span class="hlt">Al</span> and ?U(Mo,Zr)/<span class="hlt">Al</span> diffusion couples. <span class="hlt">Al</span> 43Mo 4U 6 ternary compound was also identified in ?U(Mo,Zr)/<span class="hlt">Al</span> due to the decomposition of ?U(Mo,Zr) phase. The U(<span class="hlt">Al</span>,Si) 3 and U 3Si 5 phases were identified in the interaction layers of ?U(Mo,Pt)/<span class="hlt">Al</span> A356 and ?U(Mo,Zr)/<span class="hlt">Al</span> A356 diffusion couples. These phases are formed due to the migration of Si to the interaction layer. In the diffusion couple U(Mo,Zr)/<span class="hlt">Al</span> A356, Zr 5<span class="hlt">Al</span> 3 phase was also identified in the interaction layer. The use of synchrotron radiation at Brazilian Synchrotron Light Laboratory (LNLS, CNPq, Campinas, Brazil) was necessary to achieve a complete crystallographic characterization.</p> <div class="credits"> <p class="dwt_author">Komar Varela, C.; Mirandou, M.; Aricó, S.; Balart, S.; Gribaudo, L.</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-12-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">452</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014JKPS...65.1101Z"> <span id="translatedtitle">Properties of an <span class="hlt">AlGaN/Al</span>N distributed-Bragg-reflector structure</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">An <span class="hlt">AlGaN/Al</span>N distributed-Bragg-reflector (DBR) structure with a high <span class="hlt">Al</span> content was grown by using plasma-assisted molecular beam epitaxy (PA-MBE). The properties of the sample were characterized by using the transmission electron microscopy, high-resolution X-ray diffraction, atomic force microscopy, and reflectivity spectrum measurements. The reciprocal space mapping analysis indicated that the strain in the <span class="hlt">Al</span>GaN layers was partially relaxed. The morphology of the DBR exhibited a surface covered by grains (average size of about 130 nm), and the surface roughness was about 2 nm. The spectral measurements showed that the DBR structure presented a peak reflectivity of 68.8% at the center wavelength of 247 nm, which indicated that this DBR structure could work in the deep solar-blind UV region with acceptable reflectivity. However, the optical properties of the DBR structure were deteriorated by the fluctuation of the <span class="hlt">Al</span> composition, non-uniformity of the layer thickness, the blurry, rough interface in the DBR structure, and so on.</p> <div class="credits"> <p class="dwt_author">Zhang, Li-Li; Liu, Zhan-Hui; Huang, Xiao-Gu; Li, Qing-Fang; Zhang, Rong; Xie, Zi-Li; Xiu, Xiang-Qian</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-10-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">453</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014RMxAC..44Q.167S"> <span id="translatedtitle"><span class="hlt">ALS</span> 2883: Analysis of spectroscopic features</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary"><span class="hlt">ALS</span> 2883 (RA 13^{h} 02^{m} 47^{s}, DEC -63^{o} 50' 08'', M_{v} 10.1) is the first known radio pulsar with an emission B-type companion system, discovered in 1992. The Be companion of <span class="hlt">ALS</span> 2883 has all line profiles in the visible range in emission. This emission is a common hallmark among many Be stars, and this effect is thought to be due to the presence of a circumstellar environment. Also, the star is orbiting a X-ray source as has been detected by the XMM-Newton Science Operation Center. In this study, we present the observations of <span class="hlt">ALS</span> 2883 made at the OPD/LNA 1.60 m telescope with the Coudé spectrograph in the range 4000 to 5000 Å and S/N simeq 200, performed in April 2011. First-order estimations of T_{eff} and log g parameters have been performed through Johnson's UBV and JHK photometric calibrations. Projected rotation velocity V sin i has been estimated through the mean of the first zeroes of the Fourier transforms of neutral helium rotation profiles adopting linear, quadratic and square-root limb-darkening laws. The physical conditions of the circumstellar envelope were estimated through the solution of the radiative transport equation assuming local thermodynamic equilibrium within a disk-shaped circumstellar environment with a Keplerian velocity field. The radiative transport equation is solved assuming the Roche model as a boundary condition in the circumstellar environment. Iterating the computations with a downhill-simplex algorithm, this analysis leads to a best solution for an envelope with T simeq 9500 K, gas density ? simeq 2 × 10^{-15} g.cm^{-3}, internal radius r_{i} simeq 8 R_{odot} and external radius r_e simeq 30 R_{odot}, rotating with V_{rot} simeq 140 km.s^{-1} and expanding with V_{exp} simeq 90 km.s^{-1}.</p> <div class="credits"> <p class="dwt_author">Silva, A. R.; Levenhagen, R. S.; Künzel, R.; Leister, N. V.</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-10-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">454</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/50250615"> <span id="translatedtitle">Chemical structures of <span class="hlt">AlGaN\\/Al</span>N\\/Si [111] by MOCVD using AES and XPS</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">In this paper X-ray photoelectron spectrum and Auger electron spectrum were used to study the microstructure of <span class="hlt">AlGaN\\/Al</span>N\\/Si [111] grown by metal organic chemical vapor deposition. The results indicated that a broad transition region, composed of <span class="hlt">Al</span>N, Si3N4, SiNx (x<4\\/3) and Si was present at the interface of <span class="hlt">Al</span>N\\/Si. At the interface of <span class="hlt">AlGaN\\/Al</span>N, the main incorporation of N shifted</p> <div class="credits"> <p class="dwt_author">Dongjuan Xi; Youdou Zheng; Peng Chen; Zuoming Zhao; Ping Chen; Shiyong Xie; Bo Shen; Shulin Gu; Rong Zhang</p> <p class="dwt_publisher"></p> <p class="publishDate">2001-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">455</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/21194991"> <span id="translatedtitle">Growth and characterization of Ti<span class="hlt">AlN/CrAl</span>N superlattices prepared by reactive direct current magnetron sputtering</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Ti<span class="hlt">Al</span>N and Cr<span class="hlt">Al</span>N coatings were prepared using a reactive direct current magnetron sputtering system from Ti<span class="hlt">Al</span> and Cr<span class="hlt">Al</span> targets. Structural characterization of the coatings using x-ray diffraction (XRD) revealed the B1 NaCl structure of Ti<span class="hlt">Al</span>N and Cr<span class="hlt">Al</span>N coatings with a prominent reflection along the (111) plane. The XPS data confirmed the bonding structures of Ti<span class="hlt">Al</span>N and Cr<span class="hlt">Al</span>N single layer coatings. Subsequently, nanolayered multilayer coatings of Ti<span class="hlt">AlN/CrAl</span>N were deposited on silicon and mild steel (MS) substrates at different modulation wavelengths ({lambda}) with a total thickness of approximately 1.0 {mu}m. The modulation wavelengths were calculated from the x-ray reflectivity data using modified Bragg's law. Ti<span class="hlt">AlN/CrAl</span>N multilayer coatings were textured along (111) for {lambda}<200 A and the XRD patterns showed the formation of superlattice structure for coatings deposited at {lambda}=102 A. The x-ray reflectivity data showed reflections of fifth and seventh orders for multilayer coatings deposited at {lambda}=102 and 138 A, respectively, indicating the formation of sharp interfaces between Ti<span class="hlt">Al</span>N and Cr<span class="hlt">Al</span>N layers. The cross-sectional scanning electron microscopy image of Ti<span class="hlt">AlN/CrAl</span>N multilayer coatings indicated a noncolumnar and dense microstructure. A maximum hardness of 39 GPa was observed for Ti<span class="hlt">AlN/CrAl</span>N multilayer coatings deposited at {lambda}=93 A, which was higher than the rule-of-mixture value (30 GPa) for Ti<span class="hlt">Al</span>N and Cr<span class="hlt">Al</span>N. Study of thermal stability of the coatings in air using micro-Raman spectroscopy indicated that the Ti<span class="hlt">AlN/CrAl</span>N multilayer coatings were stable up to 900 deg. C in air. Ti<span class="hlt">AlN/CrAl</span>N multilayer coatings also exhibited improved corrosion resistance when compared to the MS substrate.</p> <div class="credits"> <p class="dwt_author">Barshilia, Harish C.; Deepthi, B.; Rajam, K. S.; Bhatti, Kanwal Preet; Chaudhary, Sujeet [Surface Engineering Division, National Aerospace Laboratories, Post Bag No. 1779, Bangalore 560 017 (India); Department of Physics, Indian Institute of Technology, Delhi, New Delhi 110 016 (India)</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-01-15</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">456</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/11619397"> <span id="translatedtitle">Preparation of ethereal oils (<span class="hlt">Al</span>-Duhoun) by Ibn <span class="hlt">Al</span>-Quff (13th century A.D.).</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p class="result-summary">Ibn <span class="hlt">Al</span>-Quff was born in Damascus. He learned medicine from Ibn Abi Usaibia. Ibn <span class="hlt">Al</span>-Quff was excelled in medicine as well as in Surgery. He wrote several books, of which was "<span class="hlt">Al</span>-Qumdah" (The Authority on Surgery). Another book was "<span class="hlt">Al</span>-Shafi" (The Healer) on medicine. In the book "The Authority on Surgery", Ibn <span class="hlt">Al</span>-Quff has devoted a special chapter, on the preparation of ethereal oils, which was commonly known as <span class="hlt">Al</span>-Duhoun. He has described about 34 different oils together with their medical action. PMID:11619397</p> <div class="credits"> <p class="dwt_author">El-Gammal, S Y</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">457</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/43075643"> <span id="translatedtitle">Plastic deformation behaviour and deformation substructure in <span class="hlt">Al</span>-rich Ti<span class="hlt">Al</span> single crystals deformed at high temperatures</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Plastic deformation behaviour in Ti–54.7at.%<span class="hlt">Al</span> and Ti–58.0at.%<span class="hlt">Al</span> single crystals was examined around and above the anomalous strengthening peak temperature (Tp) focusing on the effect of <span class="hlt">Al</span>5Ti3 superstructure. The <span class="hlt">Al</span>5Ti3 superstructure developed in the L10 matrix of Ti–58.0at.%<span class="hlt">Al</span>, and the size of the <span class="hlt">Al</span>5Ti3 phase once increased during annealing at 800°C and then decreased with increasing temperature, while no significant evidence</p> <div class="credits"> <p class="dwt_author">K. Hayashi; T Nakano; Y Umakoshi</p> <p class="dwt_publisher"></p> <p class="publishDate">2001-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">458</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2014ApPhL.104n1904S"> <span id="translatedtitle">Nanoindentation of Ni<span class="hlt">Al</span> and Ni3<span class="hlt">Al</span> crystals on (100), (110), and (111) surfaces: A molecular dynamics study</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Molecular dynamics simulations were performed to study the nanoindentation of Ni<span class="hlt">Al</span> and Ni3<span class="hlt">Al</span> crystals on three surfaces: (100), (110), and (111). The calculated load-displacement curves show discrete drops at certain indentation depths, indicating dislocation bursts during indentation. The hardness values for the two materials were found to depend significantly on the indented crystallographic plane: the (100) surface is the softest for Ni<span class="hlt">Al</span> and the hardest for Ni3<span class="hlt">Al</span>. We also found distinctive deformation activities in the subsurface region in Ni3<span class="hlt">Al</span> crystals, while dislocation loops propagate deep into the substrate in Ni<span class="hlt">Al</span> systems.</p> <div class="credits"> <p class="dwt_author">Seymour, Richard; Hemeryck, Anne; Nomura, Ken-ichi; Wang, Weiqiang; Kalia, Rajiv K.; Nakano, Aiichiro; Vashishta, Priya</p> <p class="dwt_publisher"></p> <p class="publishDate">2014-04-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">459</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/doepatents/biblio/865693"> <span id="translatedtitle">Acoustic resonator with <span class="hlt">Al</span> electrodes on an <span class="hlt">Al</span>N layer and using a GaAs substrate</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p class="result-summary">A method of fabricating an acoustic wave resonator wherein all processing steps are accomplished from a single side of said substrate. The method involves deposition of a multi-layered <span class="hlt">Al/Al</span>N structure on a GaAs substrate followed by a series of fabrication steps to define a resonator from said composite. The resulting resonator comprises an <span class="hlt">Al</span>N layer between two <span class="hlt">Al</span> layers and another layer of <span class="hlt">Al</span>N on an exterior of one of said <span class="hlt">Al</span> layers.</p> <div class="credits"> <p class="dwt_author">Kline, Gerald R. (Ames, IA); Lakin, Kenneth M. (Ames, IA)</p> <p class="dwt_publisher"></p> <p class="publishDate">1985-12-03</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">460</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/495821"> <span id="translatedtitle">Orbit stability of the <span class="hlt">ALS</span> storage ring</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">The Advanced Light Source (<span class="hlt">ALS</span>) storage ring, a synchrotron light source of the third generation, is specified to maintain its electron orbit stable within one tenth of the rms beam size. In the absence of a dedicated orbit feed-back system, several orbit-distorting effects were investigated, aided by a new interactive simulation tool, the code TRACY V. The effort has led to a better understanding of the behavior of a variety of accelerator subsystems and in consequence produced a substantial improvement in day-to-day orbit stability.</p> <div class="credits"> <p class="dwt_author">Keller, R.; Nishimura, H.; Biocca, A. [and others</p> <p class="dwt_publisher"></p> <p class="publishDate">1997-05-01</p> </div> </div> </div> </div> <div id="filter_results_form" class="filter_results_form floatContainer" style="visibility: visible;"> <div style="width:100%" id="PaginatedNavigation" class="paginatedNavigationElement"> <a id="FirstPageLink" onclick='return showDiv("page_1");' href="#" title="First Page"> <img id="FirstPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.first.18x20.png" alt="First Page" /></a> <a id="PreviousPageLink" onclick='return showDiv("page_22");' href="#" title="Previous Page"> <img id="PreviousPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.previous.18x20.png" alt="Previous Page" /></a> <span id="PageLinks" class="pageLinks"> <span> <a onClick='return showDiv("page_1");' href="#">1</a> <a onClick='return showDiv("page_2");' href="#">2</a> <a onClick='return showDiv("page_3");' href="#">3</a> <a onClick='return showDiv("page_4");' 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onclick='return showDiv("page_25.0");' href="#" title="Last Page"> <img id="LastPageLinkImage" class="Icon" src="http://www.science.gov/scigov/images/icon.last.18x20.png" alt="Last Page" /></a> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">461</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/1987JOM....39k..22P"> <span id="translatedtitle">Tribological Properties of <span class="hlt">Al</span> Alloy Particle Composites</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">In recent years, a variety of particle dispersed aluminum alloy composites have been synthesized. The tribological properties of these materials include sliding wear, friction, seizure resistance and abrasive wear (of composites containing solid lubricant as well as hard ceramic particles). The potential high-performance applications of <span class="hlt">Al</span>-alloy-graphite composites include pistons for internal combustion engines and bearings. For such applications, the low stress abrasive wear rates of composites, containing high volume fractions (0.20-0.35), are comparable to that of heat treated 1045 steel.</p> <div class="credits"> <p class="dwt_author">Prasad, S. V.; Rohatgi, P. K.</p> <p class="dwt_publisher"></p> <p class="publishDate">1987-11-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">462</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://imsc.usc.edu/retreat2014/presentations/IMSC_retreat_2014_Yinghao.pdf"> <span id="translatedtitle">Persistent People Tracking with Geospa4<span class="hlt">al</span> Image Filtering (GIFT)</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">1 Persistent People Tracking with Geospa4<span class="hlt">al</span> Image Filtering (GIFT University of Southern California #12;2 · Geospa*<span class="hlt">al</span> Image Filtering Tool (GIFT) · Persistent Surveillance with GIFT · Other applica*ons of GIFT Outline #12</p> <div class="credits"> <p class="dwt_author">Shahabi, Cyrus</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">463</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20101102_153710-37964"> <span id="translatedtitle">InAs/<span class="hlt">Al</span>Sb short wavelength quantum cascade lasers.</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">??Application of InAs/<span class="hlt">Al</span>Sb materials system for development of short-wavelength quantum cascade lasers is explored. Molecular beam epitaxy (MBE) technology allowing to grow multiperiodical unstrained InAs/<span class="hlt">Al</span>Sb… (more)</p> <div class="credits"> <p class="dwt_author">Devenson, Jan</p> <p class="dwt_publisher"></p> <p class="publishDate">2010-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">464</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/20879955"> <span id="translatedtitle">The microstructure and stability of <span class="hlt">Al/Al</span>N multilayered films</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary"><span class="hlt">Al/Al</span>N multilayers with bilayer thicknesses ranging from 10 to 50 nm were fabricated using a filtered cathodic arc deposition system. The effects on the microstructure of using two different deposition rates and applying an 8 kV pulsed voltage (plasma immersion ion implantation or PIII) to the substrate were explored. The microstructure was found to undergo a transition in which the <span class="hlt">Al</span> transformed from layers to an aggregated phase under some conditions. This behavior is explained by a model in which the aggregation process is limited by diffusion. High deposition rates and the application of PIII were both found to encourage the transition by increasing diffusion. The model defines a phase diagram which predicts whether a multilayer or an aggregated structure will occur. A maximum in intrinsic stress was found to occur when the average feature size was 15 nm for both layers and aggregates.</p> <div class="credits"> <p class="dwt_author">Xiao, X. L.; McCulloch, D. G.; McKenzie, D. R.; Bilek, M. M. M. [Applied Physics, School of Applied Sciences, RMIT University, City Campus, G.P.O. Box 2476V, Melbourne, 3001 Victoria (Australia); Applied and Plasma Physics, School of Physics (A28), University of Sydney, Sydney, 2006 New South Wales (Australia)</p> <p class="dwt_publisher"></p> <p class="publishDate">2006-07-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">465</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2012APS..MAR.K1048M"> <span id="translatedtitle">Precipitant diffusion and surface segregation in <span class="hlt">Al</span> Alloys near melting point: <span class="hlt">Al</span> 2024</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">Industrial <span class="hlt">Al</span> alloys are precipitant hardened with an impurity phase. Micro precipitants introduce various novel physical properties to the systems system. The diffusion of these constituents under thermal gradient was studied by sequentially increasing temperatures near melting point as it was observed to better facilitate the migration of precipitants. Study is based on <span class="hlt">Al</span> 2024, age hardened, high strength <span class="hlt">AL</span> alloy, annealed at incremental temperatures near melting point of 500 C and was observed in Scanning Electron Microscopy (SEM) and Energy Dispersive X ray Spectroscopy (EDX). Solvent cleaned near surface region of the alloy was investigated with observation of differential migration of constituent Cu, Fe Mg and Zn precipitants. The migrations were modeled in terms of diffusion coefficients and established literature of the participating species. Study will attempt to correlate the elemental concentration variation with applied elevated heat stress in industrial settings.</p> <div class="credits"> <p class="dwt_author">Mohney, Austin; Senevirathne, Indrajith</p> <p class="dwt_publisher"></p> <p class="publishDate">2012-02-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">466</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19780069154&hterms=HR+diagrams&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3D%2528HR%2Bdiagrams%2529"> <span id="translatedtitle">Reaction diffusion in the NiCr<span class="hlt">Al</span> and CoCr<span class="hlt">Al</span> systems</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">The paper assesses the effect of overlay coating and substrate composition on the kinetics of coating depletion by interdiffusion. This is accomplished by examining the constitution, kinetics and activation energies for a series of diffusion couples primarily of the NiCr<span class="hlt">Al</span>/Ni-10Cr or CoCr<span class="hlt">Al</span>/Ni-10Cr type annealed at temperatures in the range 1000-1205 C for times up to 500 hr. A general procedure is developed for analyzing diffusion in multicomponent multiphase systems. It is shown that by introducing the concept of beta-source strength, which can be determined from appropriate phase diagrams, the Wagner solution for consumption of a second phase in a semiinfinite couple is successfully applied to the analysis of MCr<span class="hlt">Al</span> couples. Thus, correlation of beta-recession rate constants with couple composition, total and diffusional activation energies, and interdiffusion coefficients are determined.</p> <div class="credits"> <p class="dwt_author">Levine, S. R.</p> <p class="dwt_publisher"></p> <p class="publishDate">1978-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">467</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19930060673&hterms=Al2O3&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DAl2O3"> <span id="translatedtitle">Investigation of etching techniques for superconductive Nb/<span class="hlt">Al-Al</span>2O3/Nb fabrication processes</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">Wet etching, CF4 and SF6 reactive ion etching (RIE), RIE/wet hybrid etching, Cl-based RIE, ion milling, and liftoff techniques have been investigated for use in superconductive Nb/<span class="hlt">Al-Al</span>2O3/Nb fabrication processes. High-quality superconductor-insulator-superconductor (SIS) junctions have been fabricated using a variety of these etching methods; however, each technique offers distinct tradeoffs for a given process an wafer design. In particular, it was shown that SF6 provides an excellent RIE chemistry for low-voltage anisotropic etching of Nb with high selectivity to <span class="hlt">Al</span>. The SF6 tool has greatly improved the trilevel resist junction insulation process. Excellent repeatability, selectivity with respect to quartz, and submicron resolution make Cl2 + BCl3 + CHCl3 RIE a very attractive process for trilayer patterning.</p> <div class="credits"> <p class="dwt_author">Lichtenberger, A. W.; Lea, D. M.; Lloyd, F. L.</p> <p class="dwt_publisher"></p> <p class="publishDate">1993-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">468</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/958938"> <span id="translatedtitle">FORMING <span class="hlt">Al-Al</span>2O3 NANOCOMPOSITE SURFACES USING FRICTION STIR PROCESSING</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">This study presents a solid state surface engineering process to form a nanocomposite layer on aluminum surface. Friction stir processing (FSP) was used to stir and mix nano-sized <span class="hlt">Al</span>2O3 particles into a commercially pure aluminum surface to form an <span class="hlt">Al-Al</span>2O3 nanocomposite layer of up to several millimeters thick. Compared with a non-processed aluminum surface, a nanocomposite surface with 15 vol% nano-particles has demonstrated increased hardness (by 3X) and yield strength (by 10X), and reduced friction coefficient (by 55%) and wear rate (by 100X). Transmission electron microscopy (TEM) has revealed high matrix dislocation density in the nanocomposite surface that is believed to be largely responsible to such significant property improvements. Neutron diffraction measurements suggested tensile residual stress in the aluminum matrix. The stress was mainly induced by thermal-expansion-mismatch between aluminum and alumina.</p> <div class="credits"> <p class="dwt_author">Qu, Jun [ORNL; Xu, Hanbing [ORNL; Feng, Zhili [ORNL; An, Ke [ORNL; Battiste, Rick [ORNL; An, Linan [University of Central Florida; Heinrich, Helge [University of Central Florida</p> <p class="dwt_publisher"></p> <p class="publishDate">2009-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">469</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www-astro.physics.ox.ac.uk/~bureau/Publications/poster_NGC2974_AAS_07.pdf"> <span id="translatedtitle">NGC2974 MDM Image (Optical) Bacon R. et <span class="hlt">al</span>., 2001, MNRAS, 326, 23 de Zeeuw P. T., et <span class="hlt">al</span>., 2002, MNRAS, 329, 513 Krajnovic D., et <span class="hlt">al</span>., 2005, MNRAS, 357, 1113</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/epsearch/">E-print Network</a></p> <p class="result-summary">NGC2974 MDM Image (Optical) References Bacon R. et <span class="hlt">al</span>., 2001, MNRAS, 326, 23 de Zeeuw P. T., et <span class="hlt">al</span>, 130, 2647 Peletier R. F., et <span class="hlt">al</span>., 1990, AJ, 100, 1091 Trager S. C., et <span class="hlt">al</span>, 2002, AJ, 119, 1645 Early and old stellar populations ?? · SAURON survey (see e.g. Bacon et <span class="hlt">al</span>. 2001 and de Zeeuw et <span class="hlt">al</span>. 2002</p> <div class="credits"> <p class="dwt_author">Bureau, Martin</p> <p class="dwt_publisher"></p> <p class="publishDate"></p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">470</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19890030007&hterms=coal&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D20%26Ntt%3Dcoal"> <span id="translatedtitle">Mechanisms of elevated-temperature deformation in the B2 aluminides Ni<span class="hlt">Al</span> and Co<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p class="result-summary">A strain rate change technique, developed previously for distinguishing between pure-metal and alloy-type creep behavior, was used to study the elevated-temperature deformation behavior of the intermetallic compounds Ni<span class="hlt">Al</span> and Co<span class="hlt">Al</span>. Tests on Ni<span class="hlt">Al</span> were conducted at temperatures between 1100 and 1300 K while tests on Co<span class="hlt">Al</span> were performed at temperatures ranging from 1200 to 1400 K. Ni<span class="hlt">Al</span> exhibits pure-metal type behavior over the entire temperature range studied. Co<span class="hlt">Al</span>, however, undergoes a transition from pure-metal to alloy-type deformation behavior as the temperature is decreased from 1400 to 1200 K. Slip appears to be inherently more difficult in Co<span class="hlt">Al</span> than in Ni<span class="hlt">Al</span>, with lattice friction effects limiting the mobility of dislocations at a much higher tmeperature in Co<span class="hlt">Al</span> than in Ni<span class="hlt">Al</span>. The superior strength of Co<span class="hlt">Al</span> at elevated temperatures may, therefore, be related to a greater lattice friction strengthening effect in Co<span class="hlt">Al</span> than in Ni<span class="hlt">Al</span>.</p> <div class="credits"> <p class="dwt_author">Yaney, D. L.; Nix, W. D.</p> <p class="dwt_publisher"></p> <p class="publishDate">1988-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">471</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/230786"> <span id="translatedtitle">Site preference of ternary alloying additions in Fe<span class="hlt">Al</span> and Ni<span class="hlt">Al</span> by first-principles calculations</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">First-principles calculations have been performed to investigate the site preference of ternary alloying additions in Fe<span class="hlt">Al</span> and Ni<span class="hlt">Al</span>. In Fe<span class="hlt">Al</span>, Cr and Ti are found to occupy the <span class="hlt">Al</span> sublattice whereas Ni has a distinct preference for the Fe sublattice. The site substitutional behavior of 3d ternary elements in Fe<span class="hlt">Al</span> can be explained in terms of the trends in the heat-of-formation. In <span class="hlt">Al</span>-rich Ni<span class="hlt">Al</span>, Fe atoms occupy exclusively the Ni sublattice. In Ni-rich Ni<span class="hlt">Al</span>, because of the small enthalpy difference between Fe occupying <span class="hlt">Al</span> and Ni sublattices (i.e. less than 0.1 eV with a preference of Fe for <span class="hlt">Al</span> sites at 0 K), the site distributions of Fe in these alloys are found to vary with alloy composition and temperature. Due to the large difference in the local magnetic moments between Fe atoms occupying <span class="hlt">Al</span> and Ni sublattices (with values of 2.4 {micro}{sub B} and less than 0.1 {micro}{sub B}, respectively) in Ni<span class="hlt">Al</span>, magnetic susceptibility measurement should be the most effective way to measure the site distributions of Fe in Ni<span class="hlt">Al</span>.</p> <div class="credits"> <p class="dwt_author">Fu, C.L.; Zou, J. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.] [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.</p> <p class="dwt_publisher"></p> <p class="publishDate">1996-04-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">472</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://adsabs.harvard.edu/abs/2015CryRp..60...23V"> <span id="translatedtitle">Microstructure of the <span class="hlt">Al</span>-La-Ni-Fe system</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p class="result-summary">The microstructure of alloys based on the <span class="hlt">Al</span>-La-Ni-Fe system, which are characterized by a unique ability to form metal glasses and nanoscale composites in a wide range of compositions, has been investigated. <span class="hlt">Al</span>85Ni7Fe4La4 and <span class="hlt">Al</span>85Ni9Fe2La4 alloys have been analyzed by electron microscopy (including high-resolution scanning transmission electron microscopy), energy-dispersive X-ray microanalysis, electron diffraction (ED), and X-ray diffraction (XRD). It is found that, along with fcc <span class="hlt">Al</span> and <span class="hlt">Al</span>4La (<span class="hlt">Al</span>11La3) particles, these alloys contain a ternary phase <span class="hlt">Al</span>3Ni1 - x Fe x (sp. gr. Pnma) isostructural to the <span class="hlt">Al</span>3Ni phase and a quaternary phase <span class="hlt">Al</span>8Fe2 - x Ni x La isostructural to the <span class="hlt">Al</span>8Fe2Eu phase (sp. gr. Pbam). The unit-cell parameters of the <span class="hlt">Al</span>3Ni1 - x Fe x and <span class="hlt">Al</span>8Fe2 - x Ni x La compounds, determined by ED and refined by XRD, are a = 0.664(1) nm, b = 0.734(1) nm, and c = 0.490(1) nm for <span class="hlt">Al</span>3Ni1 - x Fe x and a = 1.258(3) nm, b = 1.448(3) nm, and c = 0.405(8) nm for <span class="hlt">Al</span>8Fe2 - x Ni x La. In both cases Ni and Fe atoms are statistically arranged, and no ordering is found. <span class="hlt">Al</span>8Fe2 - x Ni x La particles contain inclusions in the form of <span class="hlt">Al</span>3Fe ? layers.</p> <div class="credits"> <p class="dwt_author">Vasil'ev, A. L.; Ivanova, A. G.; Bakhteeva, N. D.; Kolobylina, N. N.; Orekhov, A. S.; Presnyakov, M. Yu.; Todorova, E. V.</p> <p class="dwt_publisher"></p> <p class="publishDate">2015-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">473</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://academic.research.microsoft.com/Publication/1493893"> <span id="translatedtitle">Scaleup of powder metallurgy processed Nb-<span class="hlt">Al</span> multifilamentary wire</span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p class="result-summary">Power metallurgy processed Nb-<span class="hlt">Al</span> superconducting wires were fabricated from billets up to 45 mm o.d. with nominal areal reduction ratios, R, up to 2 X 10⁵, Nb powder sizes from 40 to 300 ..mu..m from various sources, <span class="hlt">Al</span> powder sizes from 9 to 75 ..mu..m, <span class="hlt">Al</span> concentrations from 3 to 25 wt % <span class="hlt">Al</span> and with a wide range of</p> <div class="credits"> <p class="dwt_author">C. Thieme; H. Zhang; J. Otubo; S. Pourrahimi; B. Schwartz; S. Foner</p> <p class="dwt_publisher"></p> <p class="publishDate">1983-01-01</p> </div> </div> </div> </div> <div class="floatContainer result " lang="en"> <div class="resultNumber element">474</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/biblio/5306913"> <span id="translatedtitle">Formation of aluminum nitride during cryomilling of Ni<span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Prealloyed Ni<span class="hlt">Al</span> powders were milled in liquid nitrogen, a process known as cryomilling. The materials, formed by extrusion or hot isostatic pressing the cryomilled powders, exhibit higher creep strengths than unreinforced Ni<span class="hlt">Al</span> during slow strain rate compression testing. The increased strength was attributed to the presence of approximately 10 volume percent <span class="hlt">Al</span>N particles which were dispersed along the Ni<span class="hlt">Al</span> prior particle boundaries. The presence of <span class="hlt">Al</span>N particles within a Ni<span class="hlt">Al</span> matrix was not expected based on previous cryomilling work with oxide dispersion strengthened (ODS) nickel and iron alloys by Petkovic-Luton and Vallone. The experiments of Luton, et <span class="hlt">al</span>. on ODS aluminum alloys indicated that reactions between liquid nitrogen and aluminum were possible and led to <span class="hlt">Al</span>(O,N) particles. The hypothesis of Lutton, et <span class="hlt">al</span>. for the formation of the aluminum oxy-nitrides and the absence of <span class="hlt">Al</span>N x-ray diffraction peaks in the spectra from as-cryomilled Ni<span class="hlt">Al</span> powders convinced researchers that: (1) the nitrogen exists as an interstitial or solid solution element in Ni<span class="hlt">Al</span> after cryomilling, and (2) <span class="hlt">Al</span>N precipitates during subsequent thermomechanical processing of the powders. Recent work suggests that this hypothesis is not correct. In an effort to establish the nature of nitrogen in cryomilled Ni<span class="hlt">Al</span>, cryomilled powder particles have been subject to bulk chemical analyses, x-ray diffraction analyses, x-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Evidence supporting the existence of <span class="hlt">Al</span>N formation on the surface of cryomilled Ni<span class="hlt">Al</span> powders is presented in this paper.</p> <div class="credits"> <p class="dwt_author">Aikin, B.J.M.; Dickerson, R.M.; Jayne, D.T. (Case Western Reserve Univ., Cleveland, OH (United States)); Farmer, S.; Whittenberger, J.D. (NASA, Cleveland, OH (United States).)</p> <p class="dwt_publisher"></p> <p class="publishDate">1994-01-01</p> </div> </div> </div> </div> <div class="floatContainer result odd" lang="en"> <div class="resultNumber element">475</div> <div class="resultBody element"> <p class="result-title"><a target="resultTitleLink" href="http://science.gov/scigov/link.html?type=RESULT&redirectUrl=http://www.osti.gov/scitech/servlets/purl/5229288"> <span id="translatedtitle">Precipitation of Kr after implantation into <span class="hlt">Al</span></span></a>  </p> <div class="result-meta"> <p class="source"><a target="_blank" id="logoLink" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p class="result-summary">Transmission electron microscopy (TEM) was used to perform a systematic study of the microstructural evolution in <span class="hlt">Al</span> as a function of the fluence received during 65 keV Kr/sup +/ ion implantation at room temperature. At the lower fluences (2 x 10/sup 16/ to 2 x 10/sup 19/ Kr/sup +/m/sup -2/), isolated dislocation loops and the evolution of a dislocation network was observed by TEM. Above fluences of 10/sup 19/ Kr/sup +/m/sup -2/, the microstructure is dominated by a high density of Kr bubbles whose average size increases with dose. The appearance of additional electron diffraction reflections indicates that the majority of the bubbles contain solid fcc Kr that is epitaxially aligned with the fcc <span class="hlt">Al</span> matrix. Above fluences of 2 x 10/sup 20/ Kr/sup +/m/sup -2/ an increasing fraction of the Kr is in a liquid