Sample records for vermicompost frente al

  1. Vermicomposting Process

    Microsoft Academic Search

    Lawrence K. Wang; Yung-Tse Hung; Kathleen Hung Li

    Vermicomposting is a novel municipal biosolids and solid waste treatment process that uses earthworms (Oligochaete annelids)\\u000a for the biodegradation of the biosolids and\\/or solid waste. This system is alternately called earthworm conversion, vermicomposting,\\u000a vermistabilization, worm composting, or annelidic consumption. The worms maintain aerobic conditions in the organic substances\\u000a while accelerating and enhancing the biological decomposition of the organic substances. The

  2. 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...

  3. Industrial wastes and sludges management by vermicomposting

    Microsoft Academic Search

    Anoop Yadav; V. K. Garg

    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,

  4. 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...

  5. Stabilization of primary sewage sludge during vermicomposting.

    PubMed

    Gupta, Renuka; Garg, V K

    2008-05-30

    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

  6. OPTIMIZATION OF VERMICOMPOST AND WORM-BED LEACHATE FOR THE ORGANIC CULTIVATION OF RADISH

    Microsoft Academic Search

    Federico Antonio Gutiérrez-Miceli; María Angela Oliva Llaven; Paula Mendoza Nazar; Benigno Ruíz Sesma; José David Álvarez-Solís; Luc Dendooven

    2011-01-01

    Vermicompost and worm-bed leachate (WBL) are two products obtained from vermicomposting. The objective of this study was to evaluate the effect of different combinations of vermicompost and WBL on cultivating radish (Raphanus sativus L.). A multilevel factorial design with 25 treatments was used to investigate the effect of vermicompost at 0, 10, 20, 30, or 40% and WBL at 0,

  7. Vermicomposting of AgroIndustrial Processing Waste

    Microsoft Academic Search

    V. K. Garg; Renuka Gupta

    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

  8. Spectroscopic analysis of vermicompost for determination of nutritional quality.

    PubMed

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

    2015-01-25

    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

  9. Spectroscopic analysis of vermicompost for determination of nutritional quality

    NASA Astrophysics Data System (ADS)

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

    2015-01-01

    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.

  10. Vermicomposting of food waste: assessing the stability and maturity

    PubMed Central

    2012-01-01

    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

  11. Nutrient recovery from apple pomace waste by vermicomposting technology.

    PubMed

    Hanc, Ales; Chadimova, Zuzana

    2014-09-01

    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

  12. Vermicompost treatment differentially affects seed germination, seedling growth and physiological status of vegetable crop species

    Microsoft Academic Search

    Gederts Ievinsh

    Vermicompost preparations are increasingly used in agricultural practice. There is a possibility, that crop plants are sensitive\\u000a to negative effect of vermicompost at early stages of development. The aim of the present study was to test the effects of\\u000a vermicompost on seed germination and seedling growth of different vegetable crop species. Vermicompost substitution inhibited\\u000a seed germination and seedling growth with

  13. Worms, Worms, and Even More Worms: A Vermicomposting Guide for Teachers.

    ERIC Educational Resources Information Center

    California Integrated Waste Management Board, Sacramento.

    This guide is designed to help teachers gain a better understanding of how to get a worm vermicomposting system started. It provides reference curricula materials for using worms in the classroom. Chapters include: (1) "Why Worm Vermicomposting;" (2) "Basics of Vermicomposting;" (3) "Worm Facts;" (4) "Classroom Activities;" (5) "Lab Activities;"…

  14. The use of vermicompost in organic farming: overview, effects on soil and economics.

    PubMed

    Lim, Su Lin; Wu, Ta Yeong; Lim, Pei Nie; Shak, Katrina Pui Yee

    2015-04-01

    Vermicomposting is a process in which earthworms are used to convert organic materials into humus-like material known as vermicompost. A number of researchers throughout the world have found that the nutrient profile in vermicompost is generally higher than traditional compost. In fact, vermicompost can enhance soil fertility physically, chemically and biologically. Physically, vermicompost-treated soil has better aeration, porosity, bulk density and water retention. Chemical properties such as pH, electrical conductivity and organic matter content are also improved for better crop yield. Nevertheless, enhanced plant growth could not be satisfactorily explained by improvements in the nutrient content of the soil, which means that other plant growth-influencing materials are available in vermicomposts. Although vermicomposts have been shown to improve plant growth significantly, the application of vermicomposts at high concentrations could impede growth due to the high concentrations of soluble salts available in vermicomposts. Therefore, vermicomposts should be applied at moderate concentrations in order to obtain maximum plant yield. This review paper discusses in detail the effects of vermicompost on soil fertility physically, chemically and biologically. Future prospects and economy on the use of organic fertilizers in the agricultural sector are also examined. PMID:25130895

  15. Metal transfer in vermicomposting of sewage sludge and plant wastes

    SciTech Connect

    Frank, R. (Univ. of Guelph, Ontario); Klauck, C.; Stonefield, K.I.

    1983-12-01

    Sewage sludge is an urban waste that has a potential nutrient value for recycling into food production. A set of guidelines has been developed that prescribes the quality of sludge suitable for utilization on foodlands. A number of sewage sludges do not meet the criteria and are therefore not acceptable for direct foodland application. One of the options available for such sludges is the production of compost and one of these composting processes involves worms (vermicomposting). This study looks at a pilot vermicomposting operation and follows metal concentrations by batch lot from the sewage sludge to the final commercial product.

  16. Impact of vermicompost and composted farmyard manure on growth and yield of garlic (Allium stivum L.) field crop

    Microsoft Academic Search

    Surindra Suthar

    2009-01-01

    The efforts were made to study the impact of vermicomposted and composted farmyard manure (FYM) along with some combination of NPK fertilizers, on field crop of garlic (Allium stivum L.). A total of six experimental plots were prepared: T1 (recommended doze of NPK), T2 (vermicompost @ 15t\\/ha), T3 (20 t\\/ha vermicompost), T4 (15t\\/ha vermicompost + 50 % NPK), T5 (15t\\/ha

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

    PubMed

    Suthar, Surendra

    2007-04-01

    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

  18. Dynamics of vermicomposting of solid textile mill sludge spiked with various organic wastes

    Microsoft Academic Search

    V. K. Garg; Priya Kaushik

    In our laboratory the work is in progress to demonstrate the management of solid textile mill sludge (STMS) by vermicomposting. The laboratory based experiments have been conducted on vermicomposting of STMS spiked with cow dung (CD), biogas plant slurry (BPS), poultry droppings (PD) and agricultural residues. The results showed that Eisenia foetida did not survive in fresh STMS. The maximum

  19. Potential of Eisenia fetida for vermicomposting of garden trimmings spiked with cow dung

    Microsoft Academic Search

    V. K. Garg; Renuka Gupta

    2010-01-01

    The garden residues and trimmings were vermicomposted in order to mitigate environmental problems caused by them. The results of experiments indicated that the addition of Garden Trimmings (GT) up to 30% with cow dung (CD) produced good quality vermicompost in terms of increased NPK status as well as decrease in C : N and C : P ratio. A comparison

  20. Bioconversion of filter mud using vermicomposting employing two exotic and one local earthworm species

    Microsoft Academic Search

    Meena Khwairakpam; Renu Bhargava

    2009-01-01

    Three different earthworm species Eisenia fetida, Eudrilus eugeniae and Perionyx excavatus in individual (Monocultures) and combinations (Polycultures) were utilized to compare the suitability of worm species for vermicomposting of filter mud as well as the quality of the end product. The filter mud blended with saw dust can be directly converted into good quality fertilizer (vermicompost). Eight different reactors including

  1. THE POTENTIAL OF SELECTED BEDDING MATERIALS FOR VERMICOMPOSTING WITH RED WIGGLER WORMS EISENIA FETIDA

    Microsoft Academic Search

    Nordin Bin Mamat

    Laboratory experiments were performed to determine the composting potential of Eisenia fetida over a period of 70 using different substrates as bedding materials. The study indicates that oil palm leaves, acacia leaves, newspaper and sawdust showed different potentials as bedding materials for vermicomposting. However, proper initial preparation of the bedding material is critical to ensure efficient vermicomposting where precomposting of

  2. Formulation of a liquid fertilizer for sorghum ( Sorghum bicolor (L.) Moench) using vermicompost leachate

    Microsoft Academic Search

    Federico Antonio Gutiérrez-Miceli; Roberto Carlos García-Gómez; Reiner Rincón Rosales; Miguel Abud-Archila; Oliva Llaven María Angela; Marcos Joaquín Guillen Cruz; Luc Dendooven

    2008-01-01

    Leachate from vermicomposting contains large amounts of plant nutrients and can be used as liquid fertilizer, but normally diluted to avoid plant damage. The amount of nutrients applied is thus reduced so that an additional fertilizer is required. We investigated how dilution of vermicompost leachate combined with different concentrations of NPK triple 17 fertilizer, and polyoxyethylene tridecyl alcohol as dispersant

  3. 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

    Pramanik, Prabhat; Chung, Young Ryun

    2011-06-01

    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

  4. Re-use of invasive plants (water hyacinth) as organic fertilizer through composting and vermicomposting (Extremadura, Spain)

    NASA Astrophysics Data System (ADS)

    Labrador, Juana; Gordillo, Judit; Ruiz, Trinidad; Moreno, Marta M.

    2015-04-01

    The water hyacinth (Eichhornia crassipes) is an invasive plant that is native of the Amazon basin and whose capacity for growth and propagation causes major conservation problems with considerable socioeconomic repercussions. The greatest damage due to its fast expansion has been in the middle reaches of the River Guadiana in the SW Iberian Peninsula, where was detected in the Autumn of 2004. Due to its rapid expansion, mechanical extraction was carried out by the Confederación Hidrográfica del Guadiana (CHG) of Spain's Ministry of the Environment since the affected zone is an important area of irrigation farming and hydraulic works and this alien plant weed provoked acute social alarm (Ruiz et al., 2008). In this work we used composting and vermicomposting techniques as an environmental alternative to assess the possibilities of biotransformation of the water hyacinth biomass removed mechanically from the Guadiana River Basin (Spain). Four compost piles 1.5 x 10 m size, mechanically tumbled and with no forced ventilation (turning windrows system), were constructed outdoor. Each compost pile was considered as a different treatment: CC1: fresh water hyacinth / wheat straw (1:1 vol/vol); CC2: fresh water hyacinth / sheep manure rich in wheat straw (1:1 vol/vol); CC3: fresh water hyacinth / sheep manure rich in wheat straw (2:1 vol/vol) + Bokachi EM Activator (200 g m-2) to favor the composting process; CC4: fresh water hyacinth / sheep manure rich in wheat straw (1:1 vol/vol) + Bokachi EM Activator (200 g m-2). The vermicomposting process was performed on mesh coated wooden boxes (0.34 m3) covered with a shadow mesh with the aim of harmonizing the environmental conditions. The quantities of water hyacinth biomass used were identical in volume (120 l) but with different state or composition: fresh and chopped biomass (VCF); dry and chopped biomass (VCS); fresh and pre-composted biomass with sheep manure rich in wheat straw (VCP). Identical worm density, irrigation type (microaspersion), irrigation period and vermicomposting process duration (four months) were adopted. Phytotoxicity tests were performed on Lactuca sativa cv. "cuatro estaciones" with the aim of finding the appropriate concentrations to be incorporated to the soil. The composting process required water hyacinth to be crushed, because only chopping made the process very slow. The greatest effectiveness was observed with the vermicomposting trials. In the phytotoxicity tests, the vermicompost extracts did not cause any toxicity at any of the concentrations studied; however, compost extracts obtained in CC1 and CC3 caused problems in root development. Key words: composting, vermicomposting, water hyacinth. References Ruiz T., Martín de Rodrigo E., Lorenzo G., Albano E., Morán R., Sánchez J.M. 2008. The Water Hyacinth, Eichhornia crassipes: an invasive plant in the Guadiana River Basin (Spain). Aquatic Invasions Volume 3, Issue 1: 42-53.

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

    PubMed

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

    2014-09-15

    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

  6. Effects of Vermicompost and Water Treatment Residuals on Soil Physical Properties and Wheat Yield

    NASA Astrophysics Data System (ADS)

    Ibrahim, Mahmoud M.; Mahmoud, Essawy K.; Ibrahim, Doaa A.

    2015-04-01

    The application of vermicompost and water treatment residuals to improve the physical properties in the salt affected soils is a promising technology to meet the requirements of high plant growth and cost-effective reclamation. Therefore, the aim of this study was to investigate the effect of vermicompost and its mixtures with water treatment residuals on selected physical properties of saline sodic soil and on wheat yield. The treatments were vermicompost, water treatment residuals, vermicompost + water treatment residuals (1:1 and 2:1 wet weight ratio) at levels of 5 and 10 g dry weight kg-1 dry soil. The considered physical properties included aggregate stability, mean weight diameter, pore size distribution and dry bulk density. The addition of vermicompost and water treatment residuals had significant positive effects on the studied soil physical properties, and improved the grain yield of wheat. The treatment of (2 vermicompost + 1 water treatment residuals) at level of 5 g kg-1 soil gave the best grain yield. Combination of vermicompost and water treatment residuals improved the water treatment residuals efficiency in ameliorating the soil physical properties, and could be considered as an ameliorating material for the reclamation of salt affected soils.

  7. Pilot-scale vermicomposting of pineapple wastes with earthworms native to Accra, Ghana.

    PubMed

    Mainoo, Nana O K; Barrington, Suzelle; Whalen, Joann K; Sampedro, Luis

    2009-12-01

    Pineapple wastes, an abundant organic waste in Accra, Ghana, were vermicomposted using native earthworms (Eudrilus eugeniae Kinberg) collected from the banks of streams and around bath houses of this city. Triplicate pilot-scale vermidigesters containing about 90 earthworms and three other control boxes with no earthworms were fed pineapple pulp or peels, and the loss of wet mass was monitored over 20 weeks. In a second experiment, a 1:1 mixture of pineapple peels and pulp (w/w) was fed to triplicate pilot-scale vermicomposters and control boxes during a 20 week period. One month after feeding ended, the vermicompost and composted (control) waste was air dried and analyzed. During the first experiment, the vermicomposted pineapple pulp and peels lost 99% and 87% of their wet mass, respectively, indicating the potential for vermicomposting. Fresh pineapple waste exhibited an initial pH of 4.4, but after 24 weeks, the vermicompost and compost had acquired a neutral to alkaline pH of 7.2-9.2. The vermicompost contained as much as 0.4% total N, 0.4% total P and 0.9% total K, and had a C:N ratio of 9-10. A reduction of 31-70% in the Escherichia coli plus Salmonella loads and 78-88% in the Aspergillus load was observed during vermicomposting. The rapid breakdown of pineapple wastes by E. eugeniae demonstrated the viability of vermicomposting as a simple and low cost technology recycling this waste into a soil amendment that could be used by the 2500 vegetable producers of Accra and its surrounding areas. PMID:19620003

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

    PubMed

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

    2013-03-01

    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

  9. The effect of earthworms on the physiological state of the microbial community at vermicomposting

    Microsoft Academic Search

    A. V. Yakushev; S. A. Blagodatsky; B. A. Byzov

    2009-01-01

    The effect of earthworms on the microbial community of composts and vermicomposts was assayed by the following parameters:\\u000a mineralization activity, the levels of physiologically active and growing microbial biomass, the requirement for growth factors,\\u000a and the spectrum of assimilation of organic substrates by the microbial community. The substrate affinities of microbial enzyme\\u000a systems in vermicompost were found to be lower

  10. Evaluating the growth characteristics of lettuce in vermicompost and green waste compost

    Microsoft Academic Search

    Muhammad Ali; Anthony J. Griffiths; Keith P. Williams; Davey L. Jones

    2007-01-01

    Vermicompost was produced from a green waste compost feedstock and assessed for its potential use in a high value horticultural market. Replicated plant growth trials were undertaken with lettuce using pure worm cast (vermicompost), green waste-derived compost and mixtures of the two, i.e. 50\\/50 (v\\/v) and 20\\/80 (v\\/v) of worm casts and green waste feedstock. Results showed that plant biomass

  11. Neem leaves as a source of fertilizer-cum-pesticide vermicompost

    Microsoft Academic Search

    S. Gajalakshmi; S. A. Abbasi

    2004-01-01

    Vermicomposting of neem (Azadirachta indica A. Juss) was accomplished in ‘high-rate’ reactors operated at the earthworm (Eudrilus eugeniae) densities of 62.5 and 75 animals per litre of reactor volume. Contrary to the fears that neem––a powerful nematicide––might not be palatable to the annelids, the earthworms fed voraciously on the neem compost, converting upto 7% of the feed into vermicompost per

  12. Feasibility of utilization of horse dung spiked filter cake in vermicomposters using exotic earthworm Eisenia foetida.

    PubMed

    Sangwan, Pritam; Kaushik, C P; Garg, V K

    2008-05-01

    This contribution reports the potential of vermicomposting technology in the management of horse dung (HD) spiked sugar mill filter cake (SMFC) using an epigeic earthworm Eisenia foetida under laboratory conditions. A total of six vermicomposters filled with different ratios of HD and SMFC were maintained for this study. The growth and fecundity of E. foetida was monitored for 12 weeks. Maximum growth was recorded in 90% HD+10% SMFC feed mixture containing vermicomposter. Earthworms' biomass gain and reproduction was favorably up to 50% HD+50% SMFC feed composition. Maximum cocoons were also recorded in 90% HD+10% SMFC feed mixtures, however increasing proportions of SMFC in different vermicomposters affected the growth and fecundity of worms. A significant decrease in C:N ratio and increase in total kjeldahl nitrogen, total available phosphorus and calcium contents was recorded. The heavy metals content was higher in the vermicompost obtained in all the reactors than initial feed substrates. Based on investigations it is concluded that vermicomposting could be an alternative technology for the management of filter cake if it is mixed in 1:1 ratio with horse dung. PMID:17574845

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

    PubMed

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

    2014-12-01

    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

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

    PubMed

    Singh, Jiwan; Kalamdhad, Ajay S

    2013-12-01

    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

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

    PubMed

    Rajiv, P; Rajeshwari, Sivaraj; Rajendran, Venckatesh

    2014-11-01

    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

  16. COMPARATIVE STUDIES ON THE LEVELS OF VITAMINS DURING VERMICOMPOSTING OF FRUIT WASTES BY EUDRILUS EUGENIAE AND EISENIA FETIDA

    Microsoft Academic Search

    M. LAKSHMI PRABHA; INDIRA A. JAYRAAJ; SRINIVASA RAO

    Organic wastes are extensively increasing with increased human populations, intensive agriculture and industrialization. The disposal of wastes has become important for a healthy quality of environment. In this regard recycling of utilizable organic wastes is feasible. The recycling of wastes through vermicomposting reduces problems of disposal of organic wastes. Vermicomposting, a novel technique of converting decomposable organic wastes into valuable

  17. Investigación sobre cómo hacer frente al cáncer

    Cancer.gov

    Los familiares proporcionan la gran mayoría de los cuidados de las personas con cáncer. Un programa educativo del City of Hope Cancer Center ofrece a los profesionales de salud la información y las herramientas necesarias para ayudar a los familiares a saber cómo cuidarse a si mismos y a sus seres queridos con cáncer.

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

    NASA Astrophysics Data System (ADS)

    Rajiv, P.; Rajeshwari, Sivaraj; Venckatesh, Rajendran

    2013-12-01

    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.

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

    PubMed

    Rajiv, P; Rajeshwari, Sivaraj; Venckatesh, Rajendran

    2013-12-01

    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

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

    PubMed

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

    2015-03-01

    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

  1. Combined compost and vermicomposting process in the treatment and bioconversion of sludge.

    PubMed

    Alidadi, H; Parvaresh, A R; Shahmansouri, M R; Pourmoghadas, H; Najafpoor, A A

    2007-11-01

    Traditional thermophillic composting is commonly for treatment of sludge. A related technique as vermicomposting process, using earthworms to breakdown sludge, is also becoming popular. These two techniques have their inherent advantages and disadvantages. The combined approach suggested in this study to enhance the overall process and improve the products qualities. Two systems, vermicomposting and combined compost-vermicomposting processes, have been investigated in this study. The sludge used in this study was obtained from the drying beds of South Isfahan wastewater treatment plant. The sludge mixed with sawdust to provide C/N ratio of 25/1. Eisenia fetida was the species of earthworms used in the vermicomposting processes. The results obtained indicate reduction in the amount of volatile solids, total carbon and C/N ratio with the vermicompost age, which indicates the reduction in the biodegradable organic content and mineralization of sludge. Also increase in phosphorus concentration by the end process because of mineralization of organic matter. The results indicate that, a system that combines the two mentioned processes not only shortens stabilization time, but also improves the products quality. Combining the two systems resulted in a product that was more stable and homogenous; the product could meet the pathogen reduction requirements. PMID:19090260

  2. Vermicomposting of mixed solid textile mill sludge and cow dung with the epigeic earthworm Eisenia foetida.

    PubMed

    Kaushik, Priya; Garg, V K

    2003-12-01

    This paper reports the results of a study of vermicomposting with Eisenia foetida of solid textile mill sludge mixed with cow dung in different ratios in a 90 days composting experiment. Vermicomposting resulted in significant reduction in C:N ratio and increase in TKN. Total K and Ca were lower in the final cast than the initial feed mixture. Microbial activity measured as dehydrogenase activity increased up to 75 days and decreased on further incubation. Total P was higher in the final product than the initial feed mixture. Total heavy metal contents were lower in the final product than initial feed mixture. Solid textile mill sludge can be potentially useful as raw substrate in vermicomposting if mixed with up to 30% cow dung (on dry weight basis). The growth and cocoon production of the worm species in different feed mixtures were also investigated. PMID:14575954

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

    PubMed

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

    2014-11-26

    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

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

    PubMed

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

    2014-12-01

    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

  5. Municipal solid waste management through vermicomposting employing exotic and local species of earthworms.

    PubMed

    Kaviraj; Sharma, Satyawati

    2003-11-01

    A comparative study was conducted between exotic and local (epigeic--Eisenia fetida and anaecic--Lempito mauritii, respectively) species of earthworms for the evaluation of their efficacy in vermicomposting of municipal solid waste (MSW). Vermicomposting of MSW for 42 days resulted in significant difference between the two species in their performance measured as loss in total organic carbon, carbon-nitrogen ratio (C:N) and increase in total Kjeldahl nitrogen, electrical conductivity and total potassium and weight loss of MSW. The change in pH and increase in number of earthworms and cocoons and weight of earthworms were non-significant. PMID:12895560

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

    PubMed

    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

    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

  7. Effects of humic acids from vermicomposts on plant growth

    Microsoft Academic Search

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

    2006-01-01

    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

  8. Zinc Transformation in a Calcareous Soil as Affected by Applied Zinc Sulfate, Vermicompost, and Incubation Time

    Microsoft Academic Search

    S. Kamali; A. Ronaghi; N. Karimian

    2010-01-01

    An experiment was conducted to evaluate the effect of zinc (Zn) rates and vermicompost levels on distribution of Zn forms of a calcareous soil. After incubation periods, soil samples were air dried, and a sequential extraction scheme was used to fractionate Zn into soluble and exchangeable, bound to carbonate, organically bound, bound to manganese (Mn) oxide, bound to amorphous iron

  9. Vermicomposting in the management of pig-waste in Hong Kong

    Microsoft Academic Search

    S. H. Wong; D. A. Griffiths

    1991-01-01

    The treatment and disposal of pig-waste in Hong Kong has received much attention in recent years but, following any of the presently used treatment processes, solids remain to be further stabilized. Vermicomposting is a waste stabilization technique which converts waste into potentially recyclable materials such as worm protein and worm casts. The earthworm, Pheretima asiatica, can stabilize most of the

  10. 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 ...

  11. Potential of two epigeic and two anecic earthworm species in vermicomposting of water hyacinth

    Microsoft Academic Search

    S Gajalakshmi; E. V Ramasamy; S. A Abbasi

    2001-01-01

    The potential of two epigeic species (Eudrilus eugeniae Kinberg, and Perionyx excavatus Perrier) and two anecic species (Lampito mauritii Kinberg and Drawida willsi Michaelson) of earthworms was assessed in terms of efficiency and sustainability of vermicomposting water hyacinth (Eichhornia crassipes, Mart. Solm.). In different vermireactors, each run in duplicate with one of the four species of earthworms, and 75 g

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

    PubMed

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

    2015-01-01

    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

  13. Recycling of organic wastes for the production of vermicompost and its response in rice–legume cropping system and soil fertility

    Microsoft Academic Search

    A Jeyabal; G Kuppuswamy

    2001-01-01

    Investigations were made to recycle agricultural and agro-industrial wastes for the production of vermicompost using earthworms (Eudrilus eugeniae). Its response was studied in a rice–legume cropping system. Different combinations of coirpith\\/weeds and cowdung\\/sugarcane pressmud\\/biodigested slurry were tried for vermicomposting. The study showed that biodigested slurry and weeds was found to be an ideal combination for vermicomposting considering the nutrient content

  14. Investigating efficiency of Lampito mauritii (Kinberg) and Perionyx ceylanensis Michaelsen for vermicomposting of different types of organic substrates

    Microsoft Academic Search

    Natchimuthu Karmegam; Thilagavathy Daniel

    2009-01-01

    The vermicomposting ability of Lampito mauritii (Kinberg) and Perionyx ceylanensis Michaelsen was evaluated by using three different types of organic substrates such as leaf litter of Polyalthia longifolia, Pennisetum typhoides cobs (pearl millet) and a weed, Rottboellia exaltata (whole plant except the roots) in combination with cowdung (1:1). Vermicomposting studies (120 days) conducted to optimize\\u000a the number of worms required for

  15. Effect of stocking density and food quality on the growth and fecundity of an epigeic earthworm ( Eisenia fetida ) during vermicomposting

    Microsoft Academic Search

    V. K. Garg; Priya Kaushik; Y. K. Yadav

    2008-01-01

    Physico-chemical characteristics of the feed and optimum worm density are important parameters for the efficient working of\\u000a a vermicomposting system. Overcrowding of worms can affect the efficiency of a vermicomposting system even if all other parameters\\u000a have been optimized. This article reports the effect of stocking density and feed quality on the growth and fecundity of Eisenia fetida under laboratory

  16. Changes in chemical and microbiological properties of rabbit manure in a continuous-feeding vermicomposting system.

    PubMed

    Gómez-Brandón, María; Lores, Marta; Domínguez, Jorge

    2013-01-01

    In the present study the potential of the earthworm Eisenia fetida to process large amounts of waste was evaluated through continuous feeding reactors in which new layers of rabbit manure were added sequentially to form an age gradient inside the reactors. An optimal moisture level, ranging from 66% to 76%, was maintained throughout the process using an automatic watering system. The pH was close to 8.3, but decreased to 7.6 after 200 d of vermicomposting. No changes in electrical conductivity through the profile of layers were detected. Based on comparisons of phospholipid fatty acid (PLFA) profiles and microbial activity measurements (basal respiration), a decrease in the levels of bacteria and fungi in layers corresponding to vermicomposting times of more than 200 d occurred. This points to a higher degree of stabilisation in the final product, which is of utmost importance for its safe use as an organic amendment. PMID:23196253

  17. Direct, rapid and sustainable vermicomposting of the leaf litter of neem (Azadirachta indica).

    PubMed

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

    2015-01-01

    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

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

    Microsoft Academic Search

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

    2012-01-01

    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

  19. The Use of Vermicompost Products to Control Plant Diseases and Pests

    Microsoft Academic Search

    Yurdagul Simsek-Ersahin

    \\u000a Improper waste management practices such as burning and land filling of wastes and intensive use of agrochemicals in conventional\\u000a cropping systems caused many environmental problems worldwide that forced nations to develop sustainable solutions. In 1970s,\\u000a vermiculture has emerged as a new industry, providing a wide variety of methods applicable at variable scales based on the\\u000a aimed products. Since then, vermicomposting

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

    Microsoft Academic Search

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

    2011-01-01

    Municipal solid waste (MSW) was vermicomposted in combination with cowdung (CD) using Perionyx ceylanensis for 50days. 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

  1. Management of fresh water weeds (macrophytes) by vermicomposting using Eisenia fetida.

    PubMed

    Najar, Ishtiyaq Ahmed; Khan, Anisa B

    2013-09-01

    In the present study, potential of Eisenia fetida to recycle the different types of fresh water weeds (macrophytes) used as substrate in different reactors (Azolla pinnata reactor, Trapa natans reactor, Ceratophyllum demersum reactor, free-floating macrophytes mixture reactor, and submerged macrophytes mixture reactor) during 2 months experiment is investigated. E. fetida showed significant variation in number and weight among the reactors and during the different fortnights (P <0.05) with maximum in A. pinnata reactor (number 343.3?±?10.23 %; weight 98.62?±?4.23 % ) and minimum in submerged macrophytes mixture reactor (number 105?±?5.77 %; weight 41.07?±?3.97 % ). ANOVA showed significant variation in cocoon production (F4?=?15.67, P <0.05) and mean body weight (F4?=?13.49, P <0.05) among different reactors whereas growth rate (F3?=?23.62, P <0.05) and relative growth rate (F3?=?4.91, P <0.05) exhibited significant variation during different fortnights. Reactors showed significant variation (P <0.05) in pH, Electrical conductivity (EC), Organic carbon (OC), Organic nitrogen (ON), and C/N ratio during different fortnights with increase in pH, EC, N, and K whereas decrease in OC and C/N ratio. Hierarchical cluster analysis grouped five substrates (weeds) into three clusters-poor vermicompost substrates, moderate vermicompost substrate, and excellent vermicompost substrate. Two principal components (PCs) have been identified by factor analysis with a cumulative variance of 90.43 %. PC1 accounts for 47.17 % of the total variance represents "reproduction factor" and PC2 explaining 43.26 % variance representing "growth factor." Thus, the nature of macrophyte affects the growth and reproduction pattern of E. fetida among the different reactors, further the addition of A. pinnata in other macrophytes reactors can improve their recycling by E. fetida. PMID:23589265

  2. Compost and vermicompost of olive cake to bioremediate triazines-contaminated soil.

    PubMed

    Delgado-Moreno, Laura; Peña, Aránzazu

    2009-02-15

    The use of organic amendments to bioremediate potential organic pollutants of soil and water has become an increasingly relevant issue in the last years. This strategy has been applied to four triazine herbicides in a typical calcareous agricultural soil of the Mediterranean area. The soil was amended with olive cake, compost and vermicompost of olive cake at rates four times higher than the agronomic dose in order to stimulate biodegradation of simazine, terbuthylazine, cyanazine and prometryn, added in a mixture to the soils. Degradation studies were carried out in sterile and microbially active soil to evaluate the effect of the chemical and biological degradation of triazines. The residual herbicide concentrations at the end of the degradation assay showed no significant differences between non amended and amended soil. However, the addition of compost and vermicompost enhanced the biological degradation rate of triazines during the first week of incubation, with half-lives ranging form 5 to 18 days for the amended soils, whilst negligible degradation occurred in non-amended soil during this period. In contrast, olive cake did not significantly modify the degradation of triazines in spite that the addition of this amendment to soil resulted in the highest dehidrogenase activity values. In all the substrates, degradation of cyanazine and prometryn was faster (between 1.5 and two times higher) than those of terbuthylazine and simazine, without significant relationship with sorption parameters. The first order kinetic equation satisfactorily explained the experimental data for all triazines. A biphasic model, such as that proposed by Hoerl, was better to predict the very rapid triazines decay during the first week of incubation in soil amended with compost and vermicompost. PMID:19046758

  3. Composting and vermicomposting experiences in the treatment and bioconversion of asphaltens from the Prestige oil spill.

    PubMed

    Martín-Gil, Jesús; Navas-Gracia, Luís Manuel; Gómez-Sobrino, Ernesto; Correa-Guimaraes, Adriana; Hernández-Navarro, Salvador; Sánchez-Báscones, Mercedes; del Carmen Ramos-Sánchez, María

    2008-04-01

    This work illustrates the effectiveness of composting and vermicomposting in degrading fuel-in-water emulsions from oil spills (chapapote), and the isolation of potentially useful microorganisms for its biodegradation. Firstly, an alternative to the biodegradation of asphaltens from the Prestige oil spill (still present in some chapapote rafts in the Cantabrian coast) by means of the application of composting techniques to a microbial partnership acclimated to fuel-oil is offered. Our aim is that, after a relatively short period of time, the microorganisms can obtain its source of carbon and energy from asphaltens. The addition of metabolic co-substrates, like cow bed and potato peelings, allows the fragmentation of complex compounds into smaller structures, susceptible to further degradation. Afterwards, a maturation of the compost by means of a treatment with earthworms (Eisenia foetida) is necessary. Thus, through the vermicomposting it will be possible to obtain a valued product, useful in the processes of ground amendment, with little presence of asphaltens and occluded polycyclic aromatic hydrocarbons, rich in humus, and with an important bacterial flora of Bacillus genera, so that it can be typical of co-activators and accelerating products in composting processes. Along with this article, we show some parameters that control the evolution of the compost products (evolved gases, acidity, temperature and humidity); the chemical and microbiological analytical results; and the germination assays of vermicomposting. Results reveal that by using microorganisms living in either earthworm intestines (Stenotrophomonas maltophilia) or vermiculture substrates (Scedosporium apiospermium), it is possible to degrade and to eliminate the polycyclic asphaltens into CO(2) and H(2)O, helped by evaporation, dissolution and/or photo-oxidation processes. The obtained end product has contents of interesting vegetal nutrients and, mainly, it displays very high germination indices. PMID:17512195

  4. Vermicomposting of the leaf litter of acacia ( Acacia auriculiformis): Possible roles of reactor geometry, polyphenols, and lignin

    Microsoft Academic Search

    P. Sankar Ganesh; S. Gajalakshmi; S. A. Abbasi

    2009-01-01

    Vermicomposting of the pre-composted leaf litter of acacia (Acacia auriculiformis) was studied in reactors of identical volume but with surface area: height ratios varying from 4 to 250. In separate sets of experiments with these reactors, epigeic earthworm species Eudrilus eugeniae and anecic earthworm species Lampito mauritii were employed at densities of 75 and 150 adult animals per litre of

  5. Vermicomposting of coffee pulp using the earthworm Eisenia fetida : Effects on C and N contents and the availability of nutrients

    Microsoft Academic Search

    F. H. Orozco; J. Cegarra; L. M. Trujillo; A. Roig

    1996-01-01

    In Colombia, more than 1 million tons of coffee pulp are produced every year. Its transformation into compost by means of turned piles has led to a final product with poor physical and chemical characteristics and vermicomposting has been suggested as an alternative method of transforming these wastes into a useful organic fertilizer. The ability of the earthworm Eisenia fetida

  6. Continuous-feeding vermicomposting as a recycling management method to revalue tomato-fruit wastes from greenhouse crops

    Microsoft Academic Search

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

    2010-01-01

    Huge quantities of discarded fruits generated from greenhouse crops represent a worldwide environmental problem. The aim of this work was to assess the efficiency of vermicomposting as a recycling management option for biotransforming tomato-fruit wastes from greenhouses into an organic nutrient-rich product available for agricultural purposes. A pilot vermireactor was constructed. It was provided with a manure layer, where an

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

    Microsoft Academic Search

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

    2001-01-01

    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

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

    NASA Astrophysics Data System (ADS)

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

    2014-10-01

    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.

  9. Effects of earthworms on physicochemical properties and microbial profiles during vermicomposting of fresh fruit and vegetable wastes.

    PubMed

    Huang, Kui; Li, Fusheng; Wei, Yongfen; Fu, Xiaoyong; Chen, Xuemin

    2014-10-01

    This study aimed to investigate the effect of earthworms on physicochemical and microbial properties during vermicomposting of fresh fruit and vegetable wastes (FVW) by contrasting two decomposing systems of FVW with and without earthworms for 5weeks. Compared to control treatment (without earthworms), vermicomposting treatment resulted in a rapid decrease of electrical conductivity and losses of total carbon and nitrogen from the 2nd week. Quantitative PCR displayed that earthworms markedly enhanced bacterial and fungal densities, showing the higher values than control, during the whole decomposition process. In addition, denaturing gradient gel electrophoresis combined with sequencing analysis revealed that earthworms pronouncedly modified bacterial and fungal community structures, through broadening the community diversities of Actinobacteria, Bacteroidetes, Proteobacteria, and Ascomycotina. These results suggest that the presence of earthworms promoted the activity and population of bacteria and fungi, and modified their communities, thus altering the decomposition pathway of fresh FVW. PMID:25118152

  10. Winery vermicomposts to control the leaching of diuron, imidacloprid and their metabolites: role of dissolved organic carbon content.

    PubMed

    Fernández-Bayo, Jesús D; Nogales, Rogelio; Romero, Esperanza

    2015-01-01

    Soil organic amendment addition is an effective practice in Mediterranean areas due to its associated high agricultural benefits and its potential to reduce the pesticide impact on water resources. However, their metabolites have received scarce attention, even when they may pose more risk than their parent compounds. Two winery vermicomposts obtained from spent grape marc (V1) and the mixture vine shoot-biosolid vinasses (V2) have been investigated as low cost organic amendments to minimize the leaching of diuron, imidacloprid and their metabolites in columns packed with a sandy loam (S1) and a silty-clay loam soil (S2) under steady state flow conditions. In the unamended soil columns, leached amounts of diuron were 75% and 53% in S1 and S2, respectively. Its metabolites (3-(3,4-dichlorophenyl)-1-methylurea, DPMU; and 3,4-dichlorophenylurea, DPU) percolated less than 35% of the total applied amount. The amount of the metabolite 3,4-dichloroaniline (DCA) was 2% and 30% for S1 and S2, respectively. Leaching of imidacloprid was 79% and 96% for S1 and S2, respectively, while its metabolite 6-chloronicotinic acid (CNA) was entirely leached. In the vermicompost-amended columns, the leaching of diuron was reduced 2 to 3-fold. DPMU and DPU were also significantly reduced (more than 6-fold). DCA did not appear in any of the leachates of the amended soil columns. Imidacloprid leaching was reduced 1 to 2-folds in the amended columns. The amendments did not affect the transport of CNA. The dissolved organic carbon (DOC) from the vermicomposts did not enhance pesticide transport throughout the soil in any case. This qualitative study presents these vermicomposts as an effective potential low-cost tool in reducing pesticide and metabolite leaching. The next step would be to test them under more realistic conditions. PMID:25602152

  11. Kinetic parameters of dehydrogenase in the assessment of the response of soil to vermicompost and inorganic fertilisers

    Microsoft Academic Search

    G. Masciandaro; B. Ceccanti; V. Ronchi; C. Bauer

    2000-01-01

    Kinetic parameters (V\\u000a max and K\\u000a m) of dehydrogenase activity were determined in order to assess the metabolic response of a soil about 1?year after organic\\u000a and mineral treatments. The soil was planted with maize (Zea mays) and treated with the following fertilisers: organic (vermicompost; VC), mineral (ammonium phosphate and urea), and an organo-mineral\\u000a mixture. V\\u000a max, which represents a

  12. Stabilisation of sewage sludge and vinasse bio-wastes by vermicomposting with rabbit manure using Eisenia fetida.

    PubMed

    Molina, María José; Soriano, María Desamparados; Ingelmo, Florencio; Llinares, Josep

    2013-06-01

    Changes in the chemical characteristics and biological parameters of Eisenia fetida were assessed by VER using (CO+VE) rabbit manure (Vo) spiked with sewage sludge (SS) or vinasse (V). Seven mixtures were used: Vo, control; Vo+SS at 10%, 30%, and 50% (SS1, SS2, and SS3); Vo+V at 10%, 30%, and 50% (V1, V2, and V3). SS vermicomposts had higher humus, nutrient and total metal contents, but less soluble salts (EC) than V vermicomposts. The number and weight of worms were higher in Vo, followed by SS, at decreasing doses. V3 showed the smallest number and size. The EC of the initial mixtures explained reduced weight, whereas EC and avP2O5 accounted for lower numbers. Vermicomposting is an efficient biowaste recycling technology, but the total amount and composition of soluble salts in food influence the quality of end products and are of primary importance for biological parameters of worms. PMID:23584410

  13. El camarón de cultivo frente al WSSV, su principal patógeno

    Microsoft Academic Search

    Martha Maldonado; Jenny Rodríguez; Ignacio de Blas

    Resumen La mancha blanca provocada por el WSSV (Whit e Spot Syndrome Virus, por sus siglas en inglés) constituye hasta el momento la enfermedad más desvastadora para el camarón de cultivo. En este artículo se ha realizado una revisión bibliográfica sobre el virus, la enfermedad que provoca, las armas con las que cuenta el hospedero para enfrentar su agresión y

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

    PubMed

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

    2014-11-01

    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

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

    PubMed

    Singh, Akanksha; Jain, Akansha; Sarma, Birinchi K; Abhilash, P C; Singh, Harikesh B

    2013-05-01

    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 120days 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. PMID:23481343

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

    SciTech Connect

    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

    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.

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

    PubMed

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

    2014-10-01

    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

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

    PubMed

    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

    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

  19. Tracking the composition and transformation of humic and fulvic acids during vermicomposting of sewage sludge by elemental analysis and fluorescence excitation-emission matrix.

    PubMed

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

    2015-05-01

    Sewage sludge (T1) and the mixture of sewage sludge and cattle dung (T2) were vermicomposted with Eisenia fetida, respectively. The transformation of humic acid (HA) and fulvic acid (FA) extracted from these two treatments were evaluated by a series of chemical and spectroscopic methods. Results indicated that the vermicomposting decreased pH, TOC, and C/N ratio, and increased EC, total extractable C, and HA contents. The FA content in treatment T1 was increased significantly, and only slight increasing was observed in treatment T2. Moreover, vermicomposting decreased H content, C/N ratio, proteinaceous and carbohydrates components, and increased the N content, C/H ratio, aromatic compounds and polycondensation structures in HA and FA. In addition, fluorescence spectra and fluorescence regional integration indicated that protein-like groups were degraded and HA compounds were formed. Furthermore, the addition of cattle dung enhanced the humification process and improved the HA quality in spite of no significant effect on the FA. PMID:25736580

  20. CARACTERIZACIÓN QUÍMICA Y FÍSICA DE COMPOST DE LOMBRICES ELABORADOS A PARTIR DE RESIDUOS ORGÁNICOS PUROS Y COMBINADOS1 Vermicompost chemical and physical characterization from raw and mixed organic wastes

    Microsoft Academic Search

    Alicia E. Castillo; Silvio H. Quarín; María C. Iglesias

    The purpose of this experiment was the chemical and physical characterization of some vermicomposts and their most suitable mixture in yield and quality. The experiment design used was complete randomized block with five treatment and five replications: T1 (100% cattle feedlot manure E); T2 (100% kitchen wastes DC); T3 (75% E and 25% DC); T4 (50% E and 50% DC);

  1. Efectividad e impacto de las vacunas frente al virus del papiloma humano

    Microsoft Academic Search

    J. Ruiz Contreras

    Cervical cancer is a worldwide important public health problem. The infection by human papillomavirus (HPV) is causally related to almost every case of cervical cancer; also to a cer- tain amount of other cancers of the genital, anal and nasopharyngeal mucosa, and almost all genital warts. The development of two vaccines against the infection by HPV opens the possi- bility

  2. Variabilidad espacio-temporal de los eufáusidos frente a la costa de Concepción, Chile

    Microsoft Academic Search

    Lorena Linacre; Sergio Palma

    2004-01-01

    RESUMEN. Se analizó la distribución espacio-temporal de los eufáusidos colectados en cuatro cruceros estacionales realizados frente a la costa de Concepción en 1991. Se identificaron ocho especies, Euphausia mucronata, E. vallentini, Nyctiphanes simplex, Nematoscelis megalops, Nematobrachion flexipes, Stylocheiron longicorne, S. affine y S. suhmii. La mayoría de las especies había sido registrada en aguas del Pacífico suroriental, a excepción de

  3. ALS Association

    MedlinePLUS

    ... ALS New ALS Therapy Target Highlights Role of RNA Processing in the Disease The ALS Association to Present at BIO, World Biotechnology Convention Critical Protein Measurement Means Progress Toward ...

  4. ALS - resources

    MedlinePLUS

    Resources - ALS ... The following organizations are good resources for information on amyotrophic lateral sclerosis : Muscular Dystrophy Association - http://mda.org/disease/amyotrophic-lateral-sclerosis National Amyotrophic Lateral Sclerosis (ALS) ...

  5. Darlington AL O'Reillys AL

    E-print Network

    Greenslade, Diana

    Ck Tyungun AL Numinbah Valley AL NerangR Natural Bridge Numinbah AL Little Nerang Dam AL Albert R Bromfleet.1 FLOOD WARNING NETWORK Major Roads Railway Digital data supplied Geoscience Australia. All rights

  6. Radioterapia preoperatoria frente a cirugía como tratamiento en el carcinoma de recto

    Microsoft Academic Search

    María del Carmen Fernández Fernández; Luis Errázquin de Sáenz Tejada; María Dolores Jiménez Gamero; Carmen Cordero Fernández

    2001-01-01

    Resumen  El propósito fue realizar un estudio retrospectivo de 133 pacientes afectados por un carcinoma rectal en el cual se ha comparado\\u000a la supervivencia, la supervivencia libre de recurrencia local y las complicaciones de 61 pacientes tratados con radioterapia\\u000a preoperatorio con 72 pacientes tratados solamente con cirugía.\\u000a \\u000a En cuanto al material y los métodos, se realizó un estudio retrospectivo de 61

  7. Sustainable Household Organic Waste Management via Vermicomposting

    Microsoft Academic Search

    2009-01-01

    Increasing waste generation in developing countries has alarmed authorities on waste disposal issues. Therefore, various alternatives have been looked into to reduce waste disposed into landfill. Among others are the bioremediation options which may allow the conversion of putrescible wastes into value added products such as compost, biogas and others. This study was aimed to find optimal experimental set-up to

  8. Dissertation; Anerkennung als Diplomarbeit

    Microsoft Academic Search

    Kostal

    2008-01-01

    Keine gleichheitsrechtlichen Bedenken gegen den Ausschluss der Anerkennung einer Dissertation in einer bestimmten Studienrichtung\\u000a als Diplomarbeit einer anderen Studienrichtung durch die Novelle 2006 zum Universitätsgesetz 2002 sowie gegen den Ausschluss\\u000a der Anerkennung einer Dissertation als Dissertation einer anderen Studienrichtung; qualitative Verschiedenheit von Dissertation\\u000a und Diplomarbeit sowie unterschiedliche Qualifikationserfordernisse.

  9. ALS2 mutations

    PubMed Central

    Schneider, Susanne A.; Carr, Lucinda; Deuschl, Guenther; Hopfner, Franziska; Stamelou, Maria; Wood, Nicholas W.; Bhatia, Kailash P.

    2014-01-01

    Objective: To determine the genetic etiology in 2 consanguineous families who presented a novel phenotype of autosomal recessive juvenile amyotrophic lateral sclerosis associated with generalized dystonia. Methods: A combination of homozygosity mapping and whole-exome sequencing in the first family and Sanger sequencing of candidate genes in the second family were used. Results: Both families were found to have homozygous loss-of-function mutations in the amyotrophic lateral sclerosis 2 (juvenile) (ALS2) gene. Conclusions: We report generalized dystonia and cerebellar signs in association with ALS2-related disease. We suggest that the ALS2 gene should be screened for mutations in patients who present with a similar phenotype. PMID:24562058

  10. Who Gets ALS?

    MedlinePLUS

    ... compounds and drugs under investigation. Last revised 4/2015 Site Map | Press Room | FAQ | Privacy Policy | Link ... are owned and copyrighted by The ALS Association. ©2015 Lou Gehrig® used with permission of the Rip ...

  11. Ag-Al-Ca

    NASA Astrophysics Data System (ADS)

    Carow-Watamura, U.; Louzguine, D. V.; Takeuchi, A.

    This document is part of Part 1 http://dx.doi.org/10.1007/97.etType="URL"/> 'Systems from Ag-Al-Ca to Au-Pd-Si' of Subvolume B 'Physical Properties of Ternary Amorphous Alloys' of Volume 37 'Phase Diagrams and Physical Properties of Nonequilibrium Alloys' of Landolt-Börnstein - Group III 'Condensed Matter'. It contains the Chapter 'Ag-Al-Ca' with the content:

  12. Doan Thu et al. published in European Journal of Soil Biology The earthworm species Metaphire posthuma modulates the effect of organic

    E-print Network

    Paris-Sud XI, Université de

    soils which only received mineral fertilizers. Differences also occurred between compost several times per year as compost to improve soil fertility [18, 49, 50]. Understanding microbial posthuma modulates the effect of organic amendments (compost vs. vermicompost from buffalo manure) on soil

  13. Rapidly solidified NiAl and FeAl

    NASA Technical Reports Server (NTRS)

    Gaydosh, D. J.; Crimp, M. A.

    1984-01-01

    Melt spinning was used to produce rapidly solidified ribbons of the B2 intermetallics NiAl and FeAl. Both Fe-40Al and Fe-45Al possessed some bend ductility in the as spun condition. The bend ductility of Fe-40Al, Fe-45Al, and equiatomic NiAl increased with subsequent heat treatment. Heat treatment at approximately 0.85 T (sub m) resulted in significant grain growth in equiatomic FeAl and in all the NiAl compositions. Low bend ductility in both FeAl and NiAl generally coincided with intergranular failure, while increased bend ductility was characterized by increasing amounts of transgranular cleavage fracture.

  14. ALS superbend magnet performance

    SciTech Connect

    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

    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.

  15. ALS superbend magnet system

    SciTech Connect

    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

    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.

  16. Al Qaeda Training Manual

    NSDL National Science Digital Library

    2001-01-01

    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.

  17. Initial Symptoms of ALS

    MedlinePLUS

    ... variable from one person to another. Although the mean survival time with ALS is three to five years, many people live five, 10 or more years. Symptoms can begin in the muscles that control speech and swallowing or in the hands, arms, ...

  18. Brambilla, et al. Reply

    E-print Network

    Giovanni Brambilla; Djamel El Masri; Matteo Pierno; Ludovic Berthier; Luca Cipelletti; George Petekidis; Andrew B. Schofield

    2010-08-27

    Brambilla, et al. Reply: van Megen and Williams (vMW) question our recent claim that dense colloidal hard spheres enter at large volume fraction \\phi a dynamical regime not observed in earlier work and not described by the mode-coupling theory (MCT) of the glass transition.

  19. Smith et al Supporting Information

    E-print Network

    Jarvis, Erich D.

    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

  20. ALS Project Management Manual

    SciTech Connect

    Krupnick, Jim; Harkins, Joe

    2000-05-01

    This manual has been prepared to help establish a consistent baseline of management practices across all ALS projects. It describes the initial process of planning a project, with a specific focus on the production of a formal project plan. We feel that the primary weakness in ALS project management efforts to date stems from a failure to appreciate the importance of ''up-front'' project planning. In this document, we present a guide (with examples) to preparing the documents necessary to properly plan, monitor, and control a project's activities. While following the manual will certainly not guarantee good project management, failure to address the issues we raise will dramatically reduce the chance of success. Here we define success as meeting the technical goals on schedule and within the prescribed budget.

  1. Reliable Au Wire Bonding to Al\\/Ti\\/Al Pad

    Microsoft Academic Search

    Hiroshi Ueno

    1993-01-01

    In this paper, we describe bond degradation and the bondability of an Au wire to a thin-Al\\/Ti\\/Al pad. It is found that the pad structure of Al(300 nm)\\/Ti(300 nm)\\/Al(1000 nm) is useful for the prevention of bond degradation upon heat treatment at 473 K for 3.6 Ms. Use of the pad necessitated an annealing temperature of at least 723 K,

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

    SciTech Connect

    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

    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.

  3. Al Jazirah, Sudan

    NASA Technical Reports Server (NTRS)

    2008-01-01

    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.

  4. The thermal stability of AlUSiAl dispersion fuels and AlU alloys

    Microsoft Academic Search

    M. A. Feraday; R. D. Davidson; M. T. Foo; J. E. Winegar

    1982-01-01

    The Al-U alloys showed no dimensional or phase changes after being heated at 400°C for as long as 93 days. These alloys are thermally stable because the fuel phase (UAlâ) is thermodynamically stable with aluminum. Thus the irradiation behavior of the Al-37 wt%U alloy should be as good as that of Al-21 wt%U or Al-28 wt%U alloys at the same

  5. Descenso al Infierno de VenusDescenso al Infierno de VenusDescenso al Infierno de VenusDescenso al Infierno de Venus Manuel Alfonseca

    E-print Network

    Alfonseca, Manuel

    Descenso al Infierno de VenusDescenso al Infierno de VenusDescenso al Infierno de VenusDescenso al Infierno de Venus Manuel Alfonseca #12;Manuel Alfonseca 2 #12;Descenso al infierno de Venus 3 Descenso al infierno de Venus Manuel Alfonseca RESERVADOS TODOS LOS DERECHOS. Salvo usos razonables destinados al

  6. Metal transfer in vermicomposting of sewage sludge and plant wastes

    Microsoft Academic Search

    Richard Frank; Carl Klauck; Kohzoh I. Stonefield

    1983-01-01

    Sewage sludge is an urban waste that has a potential nutrient value for recycling into food production. A set of guidelines has been developed that prescribes the quality of sludge suitable for utilization on foodlands. A number of sewage sludges do not meet the criteria and are therefore not acceptable for direct foodland application. One of the options available for

  7. El científico frente a la \\

    Microsoft Academic Search

    Andrés H. Reggiani

    The article examines the career and legacy of the French-born Nobel laureate Alexis Carrel (1873-1944) as a paradigmatic case of interwar reactionary modernism and cultural despair. Concerned about the \\

  8. Correlation between Al2O3 particles and interface of Al Al2O3 coatings by cold spray

    Microsoft Academic Search

    Ha Yong Lee; Se Hun Jung; Soo Yong Lee; Young Ho You; Kyung Hyun Ko

    2005-01-01

    Al Al2O3 composite coatings with different Al2O3 particle shapes were prepared on Si and Al substrate by cold spray. The powder compositions of metal (Al) and ceramic (Al2O3) having different sizes and agglomerations were varied into ratios of 10:1 wt% and 1:1 wt%. Al2O3 particles were successfully incorporated into the soft metal matrix of Al. It was found that crater

  9. Correlation between Al 2O 3 particles and interface of Al–Al 2O 3 coatings by cold spray

    Microsoft Academic Search

    Ha Yong Lee; Se Hun Jung; Soo Yong Lee; Young Ho You; Kyung Hyun Ko

    2005-01-01

    Al–Al2O3 composite coatings with different Al2O3 particle shapes were prepared on Si and Al substrate by cold spray. The powder compositions of metal (Al) and ceramic (Al2O3) having different sizes and agglomerations were varied into ratios of 10:1wt% and 1:1wt%. Al2O3 particles were successfully incorporated into the soft metal matrix of Al. It was found that crater formation between the

  10. Frequently Asked Questions about ALS and the ALS Registry

    MedlinePLUS

    ... cancer. However, there are no registries or ongoing tracking efforts for ALS in the United States. The ... primary lateral sclerosis will develop problems with nerve cells for both upper and ... part, locations, and phone numbers for more details. Use the “ALS Clinical ...

  11. Alexandria (Al Iskandariya), Egypt

    NASA Technical Reports Server (NTRS)

    2002-01-01

    This image of Alexandria was taken by astronauts on board the International Space Station in December 2000 using an Electronic Still Camera. A wider-angle view (STS088-739-90) taken from the Space Shuttle in December 1998 is available for context. Alexandria (Al Iskandariya) occupies a T-shaped peninsula and strip of land separating the Mediterranean from Lake Mariout. Originally the town was built upon a mole (stone breakwater) called Heptastadium, which joined the island of Pharos (see referenced website, below) to the mainland. Since then sedimentary deposits have widened the mole. Since 1905, when the 370,000 Alexandrians lived in an area of about 4 sq km between the two harbors, the city (population 4 million; see referenced website, below) has grown beyond its medieval walls and now occupies an area of about 300 sq km. The Mahmudiya Canal, connecting Alexandria with the Nile, runs to the south of the city and, by a series of locks, enters the harbor of the principal port of Egypt (note ships). The reddish and ochre polygons west of Lake Mariout are salt-evaporation, chemical-storage, and water-treatment ponds within the coastal lagoon. Reference Youssef Halim and Fatma Abou Shouk, 2000, Human impacts on Alexandria's marine environment: UNESCO, Coastal Regions and Small Islands Unit (CSI), Coastal Management Sourcebooks 2 (accessed December 20, 2000) Additional photographs taken by astronauts can be viewed at NASA-JSC's Gateway to Astronaut Photography of Earth. Image ISS001-ESC-5025 provided by the Earth Sciences and Image Analysis Laboratory, Johnson Space Center.

  12. 76 FR 38700 - United States, et al.

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-01

    ...DEPARTMENT OF JUSTICE Antitrust Division United States, et al. v. American Express Company, et al.; Public Comments and Response on Proposed...on the proposed Final Judgment in United States, et al. v. American Express Company, et al.,...

  13. Electrical characterization of Al\\/AlO x \\/molecule\\/Ti\\/Al devices

    Microsoft Academic Search

    C. A. Richter; D. R. Stewart; D. A. A. Ohlberg; R. Stanley Williams

    2005-01-01

    We report experimental electrical characterization of Al\\/AlOx\\/molecule\\/Ti\\/Al planar crossbar devices incorporating Langmuir–Blodgett organic monolayers of eicosanoic acid, ‘fast blue’, or chlorophyll-B. Current–voltage and capacitance–voltage measurements on all three molecular device structures exhibited controllable switching hysteresis. Control devices containing no molecules showed no evidence of switching. A model of interface trapped charge mediating electronic transport appears consistent with all of the

  14. ALS - A unique design approach

    Microsoft Academic Search

    Roger A. Chamberlain

    1990-01-01

    An advanced launch system (ALS), which is intended to be flexible and to deliver a wide range of payloads at a reduced cost, is discussed. The ALS concept also features total quality management, modular subsystems, standardized interfaces, standardized missions, and off-line payload encapsulation. The technological improvements include manufacturing of dry structures, use of composite materials, adaptive guidance and control systems,

  15. Al-26 and circumstellar envelopes

    NASA Technical Reports Server (NTRS)

    Glassgold, A. E.

    1995-01-01

    The effects of the radioactive decay of Al-26 on the circumstellar envelopes of asymptotic giant branch stars are analyzed. The gamma-rays emitted by the product nucleus Mg-26 escape most envelopes, but the beta-decay positrons are stopped and can ionize and heat the gas. The ionization may produce observable effects in C-rich circumstellar envelopes, particularly if the photospheric Al-26 abundance is as large as inferred from measurements of live Al-26 in the primitive solar nebula or the observations of interstellar 1.8 MeV gamma-rays. For the nearby carbon star IRC +10216, the measured abundance of the molecular ion HCO(+) provides an upper limit of about 4 x 10(exp -3) for the photospheric Al-26/Al-27 ratio, consistent with presolar SiC grains with about the same C-12/C-13 ratio.

  16. Reliable Au Wire Bonding to Al/Ti/Al Pad

    NASA Astrophysics Data System (ADS)

    Ueno, Hiroshi

    1993-05-01

    In this paper, we describe bond degradation and the bondability of an Au wire to a thin-Al/Ti/Al pad. It is found that the pad structure of Al(300 nm)/Ti(300 nm)/Al(1000 nm) is useful for the prevention of bond degradation upon heat treatment at 473 K for 3.6 Ms. Use of the pad necessitated an annealing temperature of at least 723 K, because of its lower initial bond resistance. With heat treatment after thermosonic ball bonding, the bond resistance is almost invariable and the bond shear strength does not decrease. The life of the bond between the Au wire and the pad is extended with thickening of the Ti layer.

  17. Allegato "B" DOMANDA DI PARTECIPAZIONE AL CONCORSO DI AMMISSIONE AL

    E-print Network

    Sandini, Giulio

    IN ROBOTICA, NEUROSCIENZE, NANOTECNOLOGIE E SCOPERTA FARMACI IN COLLABORAZIONE CON LA FONDAZIONE IIT Si prega'ammissione al Corso di Dottorato di Ricerca in Robotica, Neuroscienze, Nanotecnologie e Scoperta Farmaci

  18. Al-Au-La (010)

    NASA Astrophysics Data System (ADS)

    Carow-Watamura, U.; Louzguine, D. V.; Takeuchi, A.

    This document is part of Part 1 http://dx.doi.org/10.1007/9getType="URL"/> 'Systems from Ag-Al-Ca to Au-Pd-Si' of Subvolume B 'Physical Properties of Ternary Amorphous Alloys' of Volume 37 'Phase Diagrams and Physical Properties of Nonequilibrium Alloys' of Landolt-Börnstein - Group III 'Condensed Matter'. It contains the Chapter 'Al-Au-La (010)' with the content:

  19. Al-La-Nb (068)

    NASA Astrophysics Data System (ADS)

    Carow-Watamura, U.; Louzguine, D. V.; Takeuchi, A.

    This document is part of Part 1 http://dx.doi.org/10.1007/97.etType="URL"/> 'Systems from Ag-Al-Ca to Au-Pd-Si' of Subvolume B 'Physical Properties of Ternary Amorphous Alloys' of Volume 37 'Phase Diagrams and Physical Properties of Nonequilibrium Alloys' of Landolt-Börnstein - Group III 'Condensed Matter'. It contains the Chapter 'Al-La-Nb (068)' with the content:

  20. Al-Ce-V (029)

    NASA Astrophysics Data System (ADS)

    Carow-Watamura, U.; Louzguine, D. V.; Takeuchi, A.

    This document is part of Part 1 http://dx.doi.org/10.1007/97.etType="URL"/> 'Systems from Ag-Al-Ca to Au-Pd-Si' of Subvolume B 'Physical Properties of Ternary Amorphous Alloys' of Volume 37 'Phase Diagrams and Physical Properties of Nonequilibrium Alloys' of Landolt-Börnstein - Group III 'Condensed Matter'. It contains the Chapter 'Al-Ce-V (029)' with the content:

  1. Al-La-Ni (069)

    NASA Astrophysics Data System (ADS)

    Carow-Watamura, U.; Louzguine, D. V.; Takeuchi, A.

    This document is part of Part 1 http://dx.doi.org/10.1007/9getType="URL"/> 'Systems from Ag-Al-Ca to Au-Pd-Si' of Subvolume B 'Physical Properties of Ternary Amorphous Alloys' of Volume 37 'Phase Diagrams and Physical Properties of Nonequilibrium Alloys' of Landolt-Börnstein - Group III 'Condensed Matter'. It contains the Chapter 'Al-La-Ni (069)' with the content:

  2. Al-Cu-Zr (050)

    NASA Astrophysics Data System (ADS)

    Carow-Watamura, U.; Louzguine, D. V.; Takeuchi, A.

    This document is part of Part 1 http://dx.doi.org/10.1007/9getType="URL"/> 'Systems from Ag-Al-Ca to Au-Pd-Si' of Subvolume B 'Physical Properties of Ternary Amorphous Alloys' of Volume 37 'Phase Diagrams and Physical Properties of Nonequilibrium Alloys' of Landolt-Börnstein - Group III 'Condensed Matter'. It contains the Chapter 'Al-Cu-Zr (050)' with the content:

  3. Deutsch als Zweitsprache in der Lehrerausbildung

    E-print Network

    Prediger, Susanne

    Deutsch als Zweitsprache in der Lehrerausbildung Bedarf ­ Umsetzung ­ Perspektiven Dokumentation. Jörg Roche, Ludwig-Maximilians-Universität München Deutsch als Zweitsprache in der Lehrerausbildung Deutsch als Fremdsprache, Ludwig- Maximilians-Universität München Wie wird die Qualität der Da

  4. [Current treatment of AL amyloidosis].

    PubMed

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

    2011-11-01

    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

  5. AlN/Fe/AlN nanostructures for magnetooptic magnetometry

    SciTech Connect

    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

    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.

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

    E-print Network

    Chi, Ji

    2009-05-15

    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...

  7. 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

  8. Hasler et al. SUPPLEMENTAL MATERIAL

    E-print Network

    Knutson, Brian

    could win or avoid losing #12;Hasler et al. 2 money by pressing the button during target presentation's disappearance with a variable delay of 1450-1850 ms notified participants whether they had won or lost money; denoted by outline of triangles). Reward cues signaled the possibility of winning either $0.20 (32 trials

  9. Dry sliding wear behaviour of Al–12Si and Al–12Si–3Cu cast alloys

    Microsoft Academic Search

    K. G. Basavakumar; P. G. Mukunda; M. Chakraborty

    2009-01-01

    This paper attempts to investigate the influence of the microstructural changes on the dry sliding wear behaviour of Al–12Si and Al–12Si–3Cu cast alloys by grain refinement (Al–1Ti–3B), modification (Al–10Sr) and combined action of both (Al–1Ti–3B+Al–10Sr). Results indicate that combined grain refined and modified Al–12Si–3Cu cast alloys have microstructures consisting of uniformly distributed ?-Al grains, eutectic Al–silicon and fine CuAl2 particles

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

    Microsoft Academic Search

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

    2008-01-01

    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

  11. (12) United States Patent Vertes et al.

    E-print Network

    Vertes, Akos

    (12) United States Patent Vertes et al. (54) LASER DESORPTION IONIZATION AND PEPTIDE SEQUENCING Suizdak et al. 6,589,485 B2 7/2003 Koster 6,794,196 B2 912004 Fonash et al. 6,846,681 B2 112005 Buriak et al. 6,881,950 B2 4/2005 Schlaf et aI. 111111

  12. AlSb/InAs/AlSb quantum wells

    NASA Technical Reports Server (NTRS)

    Kroemer, Herbert

    1990-01-01

    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.

  13. Tunneling through Al/AlOx/Al junction: Analytical models and first-principles simulations

    NASA Astrophysics Data System (ADS)

    Zemanová Diešková, M.; Ferretti, A.; Bokes, P.

    2013-05-01

    Ultrathin AlOx layers are nowadays widely employed to make tunneling junctions and, as a common practice, experimental transport data are often rationalized in terms of analytical models invoking effective electronic and geometric properties of the oxide layer. In this paper we examine the reliability of such models by performing first-principles simulations of the transport properties of Al/AlOx/Al junctions. The band gap, effective mass, and interface width obtained from ground state density-functional calculations are used within a potential barrier model, known also as the Simmons model, and its predictions of the conductance are compared with first-principles results. We also propose an analytical expression for the conductance based on a tight-binding model of the interface oxide. We show that the success of the potential barrier model in fitting experimental transport measurements rests on its formal similarity with the tight binding model which, in contrast to the former, is directly related to the realistic electronic structure of the interface.

  14. Proximity effect in Nb/Al, AlOxide, Al/Nb Josephson tunnel junctions

    NASA Astrophysics Data System (ADS)

    Houwman, E. P.; Gijsbertsen, J. G.; Flokstra, J.; Rogalla, H.; Le Grand, J. B.; de Korte, P. A. J.; Golubov, A. A.

    1993-03-01

    Regions with reduced energy gap induced by the proximity effect give rise to quasi-particle loss in Josephson-junction X-ray detectors, but may also be used advantageously for quasi-particle collection. The influence of the thickness of the Al proximity layers in Nb/Al1,AlO(x),Al2/Nb Josephson tunnel junctions on the electrical characteristics has been investigated theoretically and experimentally. Theoretically it is found that the strength of the proximity effect is mainly determined by the proximity parameters gammaM1 (gammaM2) of the electrodes. Good fits of the measured I-V curves with theory were obtained for junctions with thicknesses dA11 ranging from 4 to 25 nm and dA12 = 3 nm, with gammaM2 about 0.12 and gammaM1/gammaM2 = dA11/dA12. For all junctions the proximity knee remains more pronounced than predicted.

  15. Dissimilar metal joining of aluminum alloy to galvanized steel with Al–Si, Al–Cu, Al–Si–Cu and Zn–Al filler wires

    Microsoft Academic Search

    Honggang Dong; Wenjin Hu; Yuping Duan; Xudong Wang; Chuang Dong

    Aluminum alloy sheets were lap joined to galvanized steel sheets by gas tungsten arc welding (GTAW) with Al–5% Si, Al–12% Si, Al–6% Cu, Al–10% Si–4% Cu and Zn–15% Al filler wires. Different amounts of Si, Cu and Zn were introduced into the weld through different filler wires. The effects of alloying elements on the microstructure in the weld and tensile

  16. AlN nanowires for Al-based composites with high strength and low thermal expansion

    Microsoft Academic Search

    Y. B. Tang; Y. Q. Liu; C. H. Sun; H. T. Conga

    2007-01-01

    Based on the synthesis of a sufficient amount of AlN nanowires (AlN-NWs), AlN-NWs\\/Al composites with homogenously distributed AlN-NWs were fabricated. Microstructural observations reveal that the interface between AlN-NWs and Al matrix is clean and bonded well, and no interfacial reaction product was formed at the nanowire-matrix boundary. Mechanical properties including yield and tensile strength of the composites were improved with

  17. Nucleants of Eutectic Silicon in Al-Si Hypoeutectic Alloys: ?-(Al, Fe, Si) or AlP Phase

    NASA Astrophysics Data System (ADS)

    Liang, Song-Mao; Schmid-Fetzer, Rainer

    2014-11-01

    A thermodynamic description of the Al-Si-P-Fe quaternary system focused on Al-(Si)-rich alloys is developed. The solidification sequence in typical Al-7Si cast alloys is derived using thermodynamic calculations of the phase diagrams and solidification simulation under Scheil and constrained Scheil conditions. The previously claimed nucleation of eutectic silicon by ?-(Al,Fe,Si) particles is not possible because under all conditions, ?-(Al,Fe,Si) precipitates after (Si) in pertinent alloys. Variation of P in the ppm range is crucial because it changes the solidification sequence of AlP and (Si).

  18. Laser-driven performance of the Al/Al2O3/Al multi-layer flyer

    NASA Astrophysics Data System (ADS)

    Chen, Shaojie; Wu, Lizhi; Shen, Ruiqi; Ye, Yinghua; Hua, Tianli

    2013-12-01

    To assess the effect of the Al2O3 layer on the performance of a laser-driven flyer, the photonic Doppler velocimetry (PDV) and the polyvinylidene fluoride (PVDF) piezoelectric film were used. The experiment results show that because of the addition of Al2O3 insulation layer the velocity of the Al/Al2O3/Al multi-layer flyer decreased 4.8% in comparison with the Al single-layer flyer, but the impact stress increased 61.4%, up to 870 MPa at 248 mJ laser energy. Moreover, the planarity and the integrity of the flyer plate were improved.

  19. ASSIGNACI DE DEPARTAMENTS DE REFERNCIA AL PDI ADSCRIT ORGNICAMENT ALS CENTRES DOCENTS

    E-print Network

    Politècnica de Catalunya, Universitat

    ASSIGNACIÓ DE DEPARTAMENTS DE REFERÈNCIA AL PDI ADSCRIT ORGÀNICAMENT ALS CENTRES DOCENTS Acord núm.115/2011 del Consell de Govern pel qual s'aprova l'assignació de departaments de referència al PDI;Assignació de departaments de referència al PDI adscrit orgànicament als centres docents Antecedents La UPC

  20. The Collections - Dar al-Athar al-Islamiyyah

    NSDL National Science Digital Library

    Regarded by experts as one of a handful of the most comprehensive collections of Islamic art in the world, the al-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.

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

    NASA Astrophysics Data System (ADS)

    Wasserburg, G. J.; Wimpenny, Josh; Yin, Qing-Zhu

    2012-12-01

    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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19940032245&hterms=Nanometer+copper&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DNanometer%2Bcopper"><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> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Hebsur, Mohan (inventor); Whittenbeger, John D. (inventor); Lowell, Carl F. (inventor)</p> <p>1994-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2012MMTA...43.3249E"><span id="translatedtitle">Investigation of Wear Anisotropy in a Severely Deformed <span class="hlt">Al-Al</span>3Ti Composite</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>El-Hadad, Shimaa; Sato, Hisashi; Watanabe, Yoshimi</p> <p>2012-09-01</p> <p>In the current investigation, <span class="hlt">Al-Al</span>3Ti composite was processed by equal channel angular pressing (ECAP). ECAP was carried out using routes A and BC up to eight passes of deformation. It was observed that increasing the number of ECAP passes causes fragmentation of <span class="hlt">Al</span>3Ti platelet particles and decreases their sizes compared to their original sizes in the undeformed <span class="hlt">Al-Al</span>3Ti specimens. Moreover, the microstructure of route A-ECAPed <span class="hlt">Al-Al</span>3Ti composite samples showed a strong alignment of the fragmented <span class="hlt">Al</span>3Ti particles parallel to the pressing axis. On the other hand, ECAPed <span class="hlt">Al-Al</span>3Ti alloy specimens by route BC have a relatively homogeneous distribution of <span class="hlt">Al</span>3Ti particles. Because of the platelet <span class="hlt">Al</span>3Ti particle fragmentation by ECAP, all the ECAPed specimens showed small anisotropy in their wear property in spite of this observed anisotropic microstructure induced by route A-ECAP.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2012MMTA..tmp..147E"><span id="translatedtitle">Investigation of Wear Anisotropy in a Severely Deformed <span class="hlt">Al-Al</span>3Ti Composite</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>El-Hadad, Shimaa; Sato, Hisashi; Watanabe, Yoshimi</p> <p>2012-05-01</p> <p>In the current investigation, <span class="hlt">Al-Al</span>3Ti composite was processed by equal channel angular pressing (ECAP). ECAP was carried out using routes A and BC up to eight passes of deformation. It was observed that increasing the number of ECAP passes causes fragmentation of <span class="hlt">Al</span>3Ti platelet particles and decreases their sizes compared to their original sizes in the undeformed <span class="hlt">Al-Al</span>3Ti specimens. Moreover, the microstructure of route A-ECAPed <span class="hlt">Al-Al</span>3Ti composite samples showed a strong alignment of the fragmented <span class="hlt">Al</span>3Ti particles parallel to the pressing axis. On the other hand, ECAPed <span class="hlt">Al-Al</span>3Ti alloy specimens by route BC have a relatively homogeneous distribution of <span class="hlt">Al</span>3Ti particles. Because of the platelet <span class="hlt">Al</span>3Ti particle fragmentation by ECAP, all the ECAPed specimens showed small anisotropy in their wear property in spite of this observed anisotropic microstructure induced by route A-ECAP.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/7368756"><span id="translatedtitle">The <span class="hlt">ALS</span> Gun Electronics system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lo, C.C.</p> <p>1993-05-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2011-04-05/pdf/2011-7938.pdf"><span id="translatedtitle">76 FR 18783 - United States et <span class="hlt">al</span>.</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-04-05</p> <p>...DEPARTMENT OF JUSTICE Antitrust Division United States et <span class="hlt">al</span>. v. Dean Foods Company; Proposed Final Judgment, Stipulation...the Eastern District of Wisconsin in United States of America, et <span class="hlt">al</span>. v. Dean Foods Company, Civil Action No....</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NIH-MEDLINEPLUS&redirectUrl=http://www.nlm.nih.gov/medlineplus/news/fullstory_152840.html"><span id="translatedtitle">Could Type 2 Diabetes Shield Against <span class="hlt">ALS</span>?</span></a></p> <p><a target="_blank" href="http://medlineplus.gov/">MedlinePLUS</a></p> <p></p> <p></p> <p>... 2015) Monday, June 1, 2015 MONDAY, June 1, 2015 (HealthDay News) -- Type 2 diabetes may reduce the risk of developing the neurodegenerative disease amyotrophic lateral sclerosis (<span class="hlt">ALS</span>), a new study suggests. <span class="hlt">ALS</span>, ...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/1051452"><span id="translatedtitle">Effects of the <span class="hlt">Al</span> content on pore structures of porous Tie<span class="hlt">Al</span> alloys</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Jaing, Y [State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China; He, Y H [State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China; Xu, N P [Membrane Science and Technology Research Center, Nanjing University of Technology, Nanjing 210009, C; Zou, J [School of Engineering and Centre for Microscopy and Microanalysis, The University of Queensland, QLD; Huang, B [State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China; Lui, C T [Oak Ridge National Laboratory (ORNL)</p> <p>2008-01-01</p> <p>Porous Tie<span class="hlt">Al</span> alloys with different nominal compositions were fabricated through a reactive synthesis of Ti and <span class="hlt">Al</span> elemental powders. It has been found that the pore parameters vary with the <span class="hlt">Al</span> contents, indicating that the nature of the pores can be manipulated through changing the <span class="hlt">Al</span> contents. In addition, detailed structural characterizations showed that the fabricated porous Tie<span class="hlt">Al</span> alloys can have three crystalline phases (i.e., a2-Ti3<span class="hlt">Al</span>, g-Ti<span class="hlt">Al</span>, and Ti<span class="hlt">Al</span>3) when using different compositions. The fundamental reasons behind these phenomena have been explored.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2010OPhy....8.1015I"><span id="translatedtitle">Fabrication of <span class="hlt">Al</span>2O3/<span class="hlt">Al</span> structure by nitric acid oxidation at room temperature</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Iwata, Takashi; Matsumoto, Taketoshi; Terakawa, Sumio; Kobayashi, Hikaru</p> <p>2010-12-01</p> <p>A thick <span class="hlt">Al</span>2O3/aluminum (<span class="hlt">Al</span>) structure has been fabricated by oxidation of <span class="hlt">Al</span> with 68wt% and 98wt% nitric acid (HNO3) aqueous solutions at room temperature. Measurements of the <span class="hlt">Al</span>2O3 thickness vs. the oxidation time show that reaction and diffusion are the rate-determining steps for oxidation with 68wt% and 98wt% HNO3 solutions, respectively. Observation of transmission electron micrographs shows that the <span class="hlt">Al</span>2O3 layer formed with 68wt% HNO3 has a structure with cylindrically shaped pores vertically aligned from the <span class="hlt">Al</span>2O3 surface to the <span class="hlt">Al</span>2O3/<span class="hlt">Al</span> interface. Due to the porous structure, diffusion of HNO3 proceeds easily, resulting in the reaction-limited oxidation mechanism. In this case, the <span class="hlt">Al</span>2O3/<span class="hlt">Al</span> structure is considerably rough. The <span class="hlt">Al</span>2O3 layer formed with 98wt% HNO3 solutions, on the other hand, possesses a denser structure without pores, and the <span class="hlt">Al</span>2O3/<span class="hlt">Al</span> interface is much smoother, but the thickness of the <span class="hlt">Al</span>2O3 layer formed on crystalline <span class="hlt">Al</span> regions is much smaller than that on amorphous <span class="hlt">Al</span> regions. Due to the relatively uniform <span class="hlt">Al</span>2O3 thickness, the leakage current density flowing through the <span class="hlt">Al</span>2O3 layer formed with 68wt% HNO3 is lower than that formed with 98wt% HNO3.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2712389"><span id="translatedtitle">Phosphorus Enhances <span class="hlt">Al</span> Resistance in <span class="hlt">Al</span>-resistant Lespedeza bicolor but not in <span class="hlt">Al</span>-sensitive L. cuneata Under Relatively High <span class="hlt">Al</span> Stress</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Sun, Qing Bin; Shen, Ren Fang; Zhao, Xue Qiang; Chen, Rong Fu; Dong, Xiao Ying</p> <p>2008-01-01</p> <p>Background and Aims Aluminium (<span class="hlt">Al</span>) toxicity and phosphorus (P) deficiency often co-exist in acidic soils and limit crop production worldwide. Lespedeza bicolor is a leguminous forage species that grows very well in infertile, acidic soils. The objective of this study was to investigate the effects of <span class="hlt">Al</span> and P interactions on growth of Lespedeza and the distributions of <span class="hlt">Al</span> and P in two different <span class="hlt">Al</span>-resistant species, and to explore whether P can ameliorate the toxic effect of <span class="hlt">Al</span> in the two species. Methods Two species, Lespedeza bicolor and L. cuneata, were grown for 30 d with alternate <span class="hlt">Al</span> and P treatments in a hydroponics system. Harvested roots were examined using a root-system scanner, and the contents of <span class="hlt">Al</span>, P and other nutrient elements in the plants were determined using inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Haematoxylin staining was used to observe the distribution of <span class="hlt">Al</span> in the roots of seedlings. After pre-culture with or without P application, organic acids in the exudates of roots exposed to <span class="hlt">Al</span> were held in an anion-exchange resin, eluted with 2 m HCl and then analysed using high-performance liquid chromatography (HPLC). Key Results Lespedeza bicolor exhibited a stronger <span class="hlt">Al</span> resistance than did L. cuneata; <span class="hlt">Al</span> exclusion mechanisms may mainly be responsible for resistance. P application alleviated the toxic effect of <span class="hlt">Al</span> on root growth in L. bicolor, while no obvious effects were observed in L. cuneata. Much less <span class="hlt">Al</span> was accumulated in roots of L. bicolor than in L. cuneata after P application, and the P contents in both roots and shoots increased much more for L. bicolor than for L. cuneata. Lespedeza bicolor showed a higher P/<span class="hlt">Al</span> ratio in roots and shoots than did L. cuneata. P application decreased the <span class="hlt">Al</span> accumulation in root tips of L. bicolor but not in L. cuneata. The amount of <span class="hlt">Al</span>-induced organic acid (citrate and malate) exudation from roots pre-cultured with P was much less than from roots without P application; no malate and citrate exudation was detected in L. cuneata. Conclusions P enhanced <span class="hlt">Al</span> resistance in the <span class="hlt">Al</span>-resistant L. bicolor species but not in the <span class="hlt">Al</span>-sensitive L. cuneata under relatively high <span class="hlt">Al</span> stress, although P in L. cuneata might also possess an alleviative potential. Enhancement of <span class="hlt">Al</span> resistance by P in the resistant species might be associated with its more efficient P accumulation and translocation to shoots and greater <span class="hlt">Al</span> exclusion from root tips after P application, but not with an increased exudation of organic acids from roots. PMID:18757448</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/8858049"><span id="translatedtitle">Cell death mechanisms in <span class="hlt">ALS</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bredesen, D E; Wiedau-Pazos, M; Goto, J J; Rabizadeh, S; Roe, J A; Gralla, E B; Ellerby, L M; Valentine, J S</p> <p>1996-10-01</p> <p>Mutations in copper-zinc superoxide dismutase (CuZnSOD) that are associated with familial <span class="hlt">ALS</span> (FALS) are dominant, gain-of-function mutations, but the nature of the function gained has not been identified. In addition to catalyzing the dismutation of superoxide, copper-zinc superoxide dismutase also displays peroxidase activity. Whereas mutants A4V and G93A retained superoxide dismutase activity, they demonstrated a markedly enhanced copper-dependent peroxidase activity in comparison with that of the wild type enzyme as detected by the spin trap 5,5'-dimethyl-1-pyrroline N-oxide (DMPO) in electron paramagnetic resonance measurements. Two copper chelators, diethyldithiocarbamate and penicillamine, inhibited the mutants' peroxidase activity, but not that of the wild type enzyme, at stoichiometric concentrations; furthermore, these copper chelators enhanced neural survival in a cell-culture model of <span class="hlt">ALS</span> but did not alter survival of cells expressing only wild type copper-zinc superoxide dismutase. These observations suggest that oxidative reactions catalyzed by mutant copper-zinc superoxide dismutases may initiate the neuropathologic changes of FALS. PMID:8858049</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40129832"><span id="translatedtitle">Wrench structural deformation in Ras <span class="hlt">Al</span> Hilal-<span class="hlt">Al</span> Athrun area, NE Libya: a new contribution in Northern <span class="hlt">Al</span> Jabal <span class="hlt">Al</span> Akhdar Belt</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Maher A. El Amawy; Ahmed M. Muftah; Mohamed Abd El-Wahed; Aymn Nassar</p> <p></p> <p><span class="hlt">Al</span> Jabal <span class="hlt">Al</span> Akhdar is a NE\\/SW- to ENE\\/WSW-trending mobile part in Northern Cyrenaica province and is considered a large sedimentary\\u000a belt in northeast Libya. Ras <span class="hlt">Al</span> Hilal-<span class="hlt">Al</span> Athrun area is situated in the northern part of this belt and is covered by Upper\\u000a Cretaceous–Tertiary sedimentary successions with small outcrops of Quaternary deposits. Unmappable and very restricted thin\\u000a layers of</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://fuse.pha.jhu.edu/papers/technical/spie4013/4013-57p2.pdf"><span id="translatedtitle"><span class="hlt">Al</span>+LiF Coated Focal Plane</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p><span class="hlt">Al</span>+LiF Coated Mirror #2 Focal Plane Assemblies (4) Detectors (2) <span class="hlt">Al</span>+LiF Coated Mirror #1 SiC Coated Mirror #2 SiC Coated Mirror #1 Rowland Circles <span class="hlt">Al</span>+LiF Coated Grating #2 <span class="hlt">Al</span>+LiF Coated Grating #1 SiC of the channels are coated with silicon carbide (SiC), which provides an approximately constant reflectivity</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://tuprints.ulb.tu-darmstadt.de/3788/7/Dissertation,%20Clemens%20Wall,%20TU%20Darmstadt.pdf"><span id="translatedtitle">Mangan-Nickel-und Cobaltverbindungen <span class="hlt">als</span> Konversionselektrodenmaterialien</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Hoffmann, Rolf</p> <p></p> <p>Mangan- Nickel- und Cobaltverbindungen <span class="hlt">als</span> Konversionselektrodenmaterialien für Lithium ____________________________________________________63 5.1 SYNTHESE UND CHARAKTERISIERUNG VON NANOSKALIGEM LIF ______________________________63 5</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>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>2013-02-15</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Boyer, Edmond</p> <p></p> <p>), colon (Brew et <span class="hlt">al</span>., 1996), lung (Masuya et <span class="hlt">al</span>., 2001), ovary (Xu & Fidler, 2000) and melanoma cancers as a growth and differentiation factor in human cancers, by modulating metastasis and angiogenesis (Xie, 2001Freund et <span class="hlt">al</span>. - 1 - Mechanisms underlying differential expression of interleukin-8 in breast cancer</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://soils.ifas.ufl.edu/academics/Syllabus/Fall%202013/ALS_5155_Global_Agroecosystems_Syllabus_Fall_2013.pdf"><span id="translatedtitle"><span class="hlt">ALS</span> Global Agroecosystems -Draft 1 Global Agroecosystems</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Ma, Lena</p> <p></p> <p><span class="hlt">ALS</span> Global Agroecosystems - Draft 1 Global Agroecosystems <span class="hlt">ALS</span> 5XXX (This course is also taught at the undergraduate level as <span class="hlt">ALS</span> 4XXX) INSTRUCTORS: Dr. Diane Rowland, Associate Professor, University of Florida and timely global issue in agroecology and effectively communicate in video format. CLASS FORMAT Three 50</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2002cosp...34E2076L"><span id="translatedtitle"><span class="hlt">Al-Al</span>3Ni eutectic alloy and <span class="hlt">Al</span>/WC(Ni) composite directionally solidified under microgravity and normal gravity</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Luo, X.; Huang, Q.; Liu, B.; Zhang, X.; Li, Y.</p> <p></p> <p>Directional solidification of <span class="hlt">Al-Al</span>3 Ni eutectic alloy and <span class="hlt">Al</span>/WC(Ni) composite were performed in the Multi-function Crystal Growing Furnace on board the unmanned Chinese Shenzhou II spacecraft and on the ground respectively. The specimens were investigated applying metallographic, SEM, XRD and image analysis techniques. The results show that, for the <span class="hlt">Al-Al</span>3 Ni eutectic alloy, 1) microgravity condition is beneficial to eliminate solidification defects; 2) the <span class="hlt">Al</span>3 Ni rods precipitated in the space sample are short and array somewhat random compared with that in the ground sample, which are longer and parallel to the growth direction; 3) different preferred orientations, <span class="hlt">Al</span>(111) in the sample solidified under microgravity and <span class="hlt">Al</span>3 Ni(200) in the sample solidified in 1g, were observed respectively; 4) the mean spacing between <span class="hlt">Al</span>3 Ni rods obtained under microgravity comes near to that in normal gravity. Moreover, the inter-rod spacing distribution obtained in space is more convergent. In the <span class="hlt">Al</span>/WC(Ni) composite, an obvious migration of WC(Ni) particles in <span class="hlt">Al</span> matrix was observed in the space sample but not in the ground sample. It could be concluded that gravity condition had a strong influence on the solidification behavior of materials .</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/20005991"><span id="translatedtitle">Wear behavior of <span class="hlt">Al-Al</span>{sub 3}Ti composite manufactured by a centrifugal method</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Watanabe, Yoshimi; Yamanaka, Noboru; Fukui, Yasuyoshi</p> <p>1999-12-01</p> <p>The purpose of the present study was to develop a wear-resistant, light <span class="hlt">Al-Al</span>{sub 3}Ti composite material. An <span class="hlt">Al-Al</span>{sub 3}Ti composite specimen was machined from a thick-walled tube of <span class="hlt">Al-Al</span>{sub 3}Ti functionally graded material (FGM) manufactured by the centrifugal method from a commercial ingot of <span class="hlt">Al</span>-5 mass% Ti master alloy. The alloy was heated to a temperature where solid <span class="hlt">Al</span>{sub 3}Ti particles resided in a liquid <span class="hlt">Al</span> matrix, and then the centrifugal method was carried out. <span class="hlt">Al</span>{sub 3}Ti particles in a commercial alloy ingot exist as platelets, and this shape was maintained through the casting. Three kinds of wear specimens were prepared, taking into account the morphology of the <span class="hlt">Al</span>{sub 3}Ti particles in the thick-walled FGM tube; the <span class="hlt">Al</span>{sub 3}Ti particles were arranged with their platelet planes nearly normal to the radial direction as a result of the applied centrifugal force. The wear resistance of the <span class="hlt">Al-Al</span>{sub 3}Ti composite was significantly higher than that of pure <span class="hlt">Al</span>. Wear-resistance anisotropy and dissolution of the <span class="hlt">Al</span>{sub 3}Ti into the <span class="hlt">Al</span> matrix at the near-surface region, around 100 {micro}m in depth, were also observed. The mechanism of the supersaturated-layer formation and the origin of the anisotropic wear resistance are discussed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&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%25C3%2598%25C2%25A7%25C3%2599%25E2%2580%259E%25C3%2598%25C2%25B9%25C3%2598%25C2%25B1%25C3%2598%25C2%25A8%25C3%2599%25C5%25A0%25C3%2598%25C2%25A9%2B%257C%2Bal-%25C3%258A%25C2%25BBarab%25C3%2584%25C2%25AByah%2B%257C%2B%25C3%2598%25C2%25B9%25C3%2598%25C2%25B1%25C3%2598%25C2%25A8%25C3%2599%25C5%25A0%252F%2526"><span id="translatedtitle">Opportunity's 'Rub <span class="hlt">al</span> Khali' Panorama</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p></p> <p>2005-01-01</p> <p><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> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_6");'>6</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li class="active"><span>8</span></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_8 --> <div id="page_9" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li class="active"><span>9</span></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="161"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=20040087167&hterms=distribution+system+food+industry&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3Ddistribution%2Bsystem%2Bfood%2Bindustry"><span id="translatedtitle">Systems Engineering Techniques for <span class="hlt">ALS</span> Decision Making</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Rodriquez, Luis F.; Drysdale, Alan E.; Jones, Harry; Levri, Julie A.</p> <p>2004-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://euro.ecom.cmu.edu/people/faculty/mshamos/7610244.pdf"><span id="translatedtitle">(12) United States Patent Likourezos et <span class="hlt">al</span>.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Shamos, Michael I.</p> <p></p> <p>et <span class="hlt">al</span>. 5,778,178 A 711998 Arunachalam 5,794,207 A 811998 Walker et <span class="hlt">al</span>. 5,794,219 A * 811998 Brown,987,500 A 1111999 Arunachalam 6,021,397 A 212000 Jones et <span class="hlt">al</span>. 6,023,685 A 212000 Brett et <span class="hlt">al</span>. 6,029,150 A 212000/2001 Woolston 6,212,556 Bl 4/2001 Arunachalam 6,246,996 Bl 6/2001 Stein et <span class="hlt">al</span>. 6,260,024 Bl 7/2001 Shkedy 6</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2009bein.book...29D"><span id="translatedtitle">Instandhaltungsmanagement <span class="hlt">als</span> Gestaltungsfeld Ganzheitlicher Produktionssysteme</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Dombrowski, Uwe; Schulze, Sven; Otano, Isabel Crespo</p> <p></p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/282257"><span id="translatedtitle">Microstructure and properties of <span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span>(Si) and <span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span>(Si)-Si composites formed by in situ reaction of <span class="hlt">Al</span> with aluminosilicate ceramics</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ewsuk, K.G.; Glass, S.J.; Loehman, R.E. [Sandia National Labs., Albuquerque, NM (United States); Tomsia, A.P. [Lawrence Berkeley Lab., CA (United States); Fahrenholtz, W.G. [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Chemical and Nuclear Engineering</p> <p>1996-08-01</p> <p><span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span>(Si) and <span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span>(Si)-Si composites have been formed by in situ reaction of molten <span class="hlt">Al</span> with aluminosilicate ceramics. This reactive metal penetration (RMP) process is driven by a strongly negative Gibbs energy for reaction. In the <span class="hlt">Al</span>/mullite system, <span class="hlt">Al</span> reduces mullite to produce {alpha}-<span class="hlt">Al</span>{sub 2}O{sub 3} and elemental Si. With excess <span class="hlt">Al</span> (i.e., x > 0), a composite of {alpha}-<span class="hlt">Al</span>{sub 2}O{sub 3}, <span class="hlt">Al</span>(Si) alloy, and Si can be formed. Ceramic-metal composites containing up to 30 vol pct <span class="hlt">Al</span>(Si) were prepared by reacting molten <span class="hlt">Al</span> with dense, aluminosilicate ceramic preforms or by reactively hot pressing <span class="hlt">Al</span> and mullite powder mixtures. Both reactive metal-forming techniques produce ceramic composite bodies consisting of a fine-grained alumina skeleton with an interpenetrating <span class="hlt">Al</span>(Si) metal phase. The rigid alumina ceramic skeletal structure dominates composite physical properties such as the Young`s modulus, hardness, and the coefficient of thermal expansion, while the interpenetrating ductile <span class="hlt">Al</span>(Si) metal phase contributes to composite fracture toughness. Microstructural analysis of composite fracture surfaces shows evidence of ductile metal failure of <span class="hlt">Al</span>(Si) ligaments. <span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span>(Si) and <span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span>(Si)-Si composites produced by in situ reaction of aluminum with mullite have improved mechanical properties and increased stiffness relative to dense mullite, and composite fracture toughness increases with increasing <span class="hlt">Al</span>(Si) content.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>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>2013-03-18</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/41028264"><span id="translatedtitle">The behavior of MCr<span class="hlt">Al</span>Y coatings on Ni 3<span class="hlt">Al</span>-base superalloy</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>B. Wang; J. Gong; C. Sun; R. F. Huang; L. S. Wen</p> <p>2003-01-01</p> <p>This work is concerned with NiCr<span class="hlt">Al</span>Y and NiCoCr<span class="hlt">Al</span>Y coatings deposited on the superalloy IC-6 (Ni3<span class="hlt">Al</span>-base superalloy) by arc ion plating (AIP). The results indicated that the presence of <span class="hlt">Al</span> and Mo in alloy IC-6 impeded Cr atoms moving from coatings to substrates during the deposition process. As a consequence, the distribution of Cr is well proportioned in both NiCr<span class="hlt">Al</span>Y and</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/18997156"><span id="translatedtitle">Optical properties and electronic structure of the intermetallic phases Ni<span class="hlt">Al</span>, Co<span class="hlt">Al</span>, and Fe<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>K. Schlemper; L. K. Thomas</p> <p>1994-01-01</p> <p>The dielectric functions of the intermetallic B2 phases Ni<span class="hlt">Al</span>, Co<span class="hlt">Al</span>, and Fe<span class="hlt">Al</span> have been determined by differential reflectometry and the Kramers-Kronig analysis in the energy range of 1.2-5 eV for various compositions near stoichiometry. The experimental absorption maxima are correlated to the band structure of these alloys taken from the literature. All transitions could be assigned to the band structure.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/49443586"><span id="translatedtitle">Effects of <span class="hlt">Al</span> and <span class="hlt">Al</span> 4C 3 contents on combustion synthesis of Cr 2<span class="hlt">Al</span>C from Cr 2O 3–<span class="hlt">Al–Al</span> 4C 3 powder compacts</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>C. L. Yeh; C. W. Kuo</p> <p>2011-01-01</p> <p>Preparation of the ternary carbide Cr2<span class="hlt">Al</span>C was conducted by combustion synthesis in the mode of self-propagating high-temperature synthesis (SHS) from the Cr2O3–<span class="hlt">Al–Al</span>4C3 powder compact. Effects of the contents of <span class="hlt">Al</span> and <span class="hlt">Al</span>4C3 on the product composition and combustion behavior were studied by formulating the reactant mixture with a stoichiometric proportion of Cr2O3:<span class="hlt">Al:Al</span>4C3=3:5x:y, where x and y varied from 1.0 to</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/18519686"><span id="translatedtitle">Thermoluminescence properties of <span class="hlt">Al</span>N ceramics</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>L Trinkler; P Christensen; N. A Larsen; B Berzina</p> <p>1998-01-01</p> <p>The paper describes thermoluminescence (TL) properties of <span class="hlt">Al</span>N:Y2O3 ceramics irradiated with ionising radiation. A high TL sensitivity of <span class="hlt">Al</span>N:Y2O3 ceramics to radiation encouraged a study of the <span class="hlt">Al</span>N ceramics for application as a dosimetric material. The paper presents experimental data on: glow curve, emission spectrum, dose response, energy dependence, influence of heating rate and fading rate. The measured TL characteristics</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40440606"><span id="translatedtitle">Nanomechanics of Mg–<span class="hlt">Al</span> intermetallic compounds</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>M.-X. Zhang; H. Huang; K. Spencer; Y.-N. Shi</p> <p>2010-01-01</p> <p>Cold spraying of pure <span class="hlt">Al</span> powder on a pure Mg substrate together with subsequent post-spray annealing treatment produced Mg17<span class="hlt">Al</span>12 (?-phase) and Mg2<span class="hlt">Al</span>3 (?-phase) intermetallic layers on the surface of the substrate. These layers showed significantly better nanomechanical properties, including the reduced elastic modulus and nanohardness, which were determined using nanoindentation, than commercial purity Mg and AZ91 alloys. Combined with their</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://aem.asm.org/cgi/reprint/69/7/4057.pdf"><span id="translatedtitle">Toxicity of <span class="hlt">Al</span> to Desulfovibrio desulfuricans</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>James E. Amonette; Colleen K. Russell; Katie A. Carosino; Nicole L. Robinson; Jennifer T. Ho</p> <p>2003-01-01</p> <p>The toxicity of <span class="hlt">Al</span> to Desulfovibrio desulfuricans G20 was assessed over a period of eight weeks in a modified lactate-C medium buffered at four initial pHs (5.0, 6.5, 7.2, and 8.3) and treated with five levels of added <span class="hlt">Al</span> (none, 0.01, 0.1, 1.0, and 10 mM). At pH 5, cell populations decreased significantly and any effect of <span class="hlt">Al</span> was negligible</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://courses.ttu.edu/ppare/Research/PDF%20Articles/tetrahedron%20letter%202002.pdf"><span id="translatedtitle">COOMe Et2<span class="hlt">Al</span>I TETRAHEDRON</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Paré, Paul W.</p> <p></p> <p>RCHO COOMe Et2<span class="hlt">Al</span>I CH2Cl2 O OMe OH R IH + (1.2eq) ( 90%) TETRAHEDRON LETTERS Tetrahedron Letters 43 also obtained by using Et2<span class="hlt">Al</span>I as the promoter and the halogen source.8 Afterwards, Lu and coCl4 (1.2 equiv.), but the success was very limited. However when TiCl4 was replaced by Et2<span class="hlt">Al</span>I</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/142321"><span id="translatedtitle">Creep regimes for directionally solidified <span class="hlt">Al-Al</span>{sub 3}Ni eutectic composite</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Himbeault, D.D. [Atomic Energy of Canada Ltd., Pinawak, Manitoba (Canada); Cahoon, J.R. [Univ. of Manitoba, Winnipeg (Canada). Dept. of Mechanical and Industrial Engineering</p> <p>1993-12-01</p> <p>Creep characteristics of <span class="hlt">Al-Al</span>{sub 3}Ni eutectic composites directionally solidified at 2.2 {times} 10{sup {minus}2} mm/s were determined over a wide range of stress and temperature. Four distinct regions of creep were observed. The rate controlling mechanisms for the four regions appear to be high-temperature dislocation climb in the <span class="hlt">Al</span> matrix, low-temperature climb in the <span class="hlt">Al</span> matrix, boundary sliding, and a mechanism involving deformation of the <span class="hlt">Al</span>{sub 3}Ni fibers. Creep rates of the <span class="hlt">Al-Al</span>{sub 3}Ni composite are several orders of magnitude smaller than for pure <span class="hlt">Al</span>, and apparently, in the regions where deformation of the <span class="hlt">Al</span> matrix is rate controlling, only a very small fraction of the matrix is deforming during creep of the composite.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2014JMEP...23.1614P"><span id="translatedtitle">Interfacial Phenomena in <span class="hlt">Al/Al</span>, <span class="hlt">Al</span>/Cu, and Cu/Cu Joints Soldered Using an <span class="hlt">Al</span>-Zn Alloy with Ag or Cu Additions</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Pstru?, Janusz; Gancarz, Tomasz</p> <p>2014-05-01</p> <p>The studies of soldered joints were carried out in systems: <span class="hlt">Al/solder/Al</span>, <span class="hlt">Al</span>/solder/Cu, Cu/solder/Cu, where the solder was (<span class="hlt">Al</span>-Zn)EUT, (<span class="hlt">Al</span>-Zn)EUT with 0.5, 1.0, and 1.5 at.% of Ag and (<span class="hlt">Al</span>-Zn)EUT with 0.5, 1.0, and 1.5 at.% of Cu addition. Brazing was performed at 500 °C for 3 min. The EDS analysis indicated that the composition of the layers starting from the Cu pad was CuZn, Cu5Zn8, and CuZn4, respectively. Wetting tests were performed at 500 °C for 3, 8, 15, and 30 min, respectively. Thickness of the layers and their kinetics of growth were measured based on the SEM micrographs. The formation of interlayers was not observed from the side of <span class="hlt">Al</span> pads. On the contrary, dissolution of the <span class="hlt">Al</span> substrate and migration of <span class="hlt">Al</span>-rich particles into the bulk of the solder were observed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://euro.ecom.cmu.edu/people/faculty/mshamos/7627528.pdf"><span id="translatedtitle">(12) United States Patent Likourezos et <span class="hlt">al</span>.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Shamos, Michael I.</p> <p></p> <p>/1998 Mandler et <span class="hlt">al</span>. 5,778,178 A 7/1998 Arunachalam 5,794,207 A 8/1998 Walker et <span class="hlt">al</span>. 5,794,219 A 8/1998 Brown 5. 5,966,698 A 1011999 Pollin 5,987,500 A 1111999 Arunachalam 6,021,397 A 212000 Jones et <span class="hlt">al</span>. 6/2001 Arunachalam 6,246,996 Bl 6/2001 Stein et <span class="hlt">al</span>. 6,260,024 Bl 7/2001 Shkedy 6,266,651 Bl 7/2001 Woolston 6</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kim, Yeon Soo; Hofman, Gerard L.</p> <p>2011-03-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&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> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Dong-Hyun Cho; Mitsuaki Shimizu; Toshihide Ide; Hideyuki Ookita; Hajime Okumura</p> <p>2002-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://hdl.handle.net/2060/19970022133"><span id="translatedtitle">Processing and Mechanical Properties of Directionally Solidified Ni<span class="hlt">Al/NiAl</span>Ta Alloys</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Johnson, D. R.; Oliver, B. F.; Noebe, R. D.; Whittenberger, J. D.</p> <p>1994-01-01</p> <p>Promising creep strengths were found for a directionally solidified Ni<span class="hlt">Al-NiAl</span>Ta alloy when compared to other Ni<span class="hlt">Al</span> based intermetallics. The directionally solidified alloy had an off-eutectic composition that resulted in microstructures consisting of Ni<span class="hlt">Al</span> dendrites surrounded by aligned eutectic regions. The room temperature toughness of the two phase alloy was similar to that of polycrystalline Ni<span class="hlt">Al</span> even with the presence of the brittle Laves phase Ni<span class="hlt">Al</span>Ta. Alloying additions that may improve the room temperature toughness by producing multiphase alloys are discussed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/1050922"><span id="translatedtitle">Effects of the <span class="hlt">Al</span> content on pore structures of porous Tie<span class="hlt">Al</span> alloys</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Jiang, Y [State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China; He, Y H [State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China; Zou, J [School of Engineering and Centre for Microscopy and Microanalysis, The University of Queensland, QLD; Huang, B [State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China; Liu, C [Oak Ridge National Laboratory (ORNL)</p> <p>2008-01-01</p> <p>PorousTi Alalloys with different nominal compositions were fabricated through a reactive synthesis of Ti and <span class="hlt">Al</span> elemental powders. It has been found that the pore parameters vary with the <span class="hlt">Al</span> contents, indicating that the nature of the pores can be manipulated through changing the <span class="hlt">Al</span> contents. In addition, detailed structural characterizations showed that the fabricated porousTi Alalloys can have three crystalline phases (i.e., 2-Ti3<span class="hlt">Al</span>, -Ti<span class="hlt">Al</span>, and Ti<span class="hlt">Al</span>3) when using different compositions. The fundamental reasons behind these phenomena have been explored.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&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> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Zubarev, Dmitry Yu; Boldyrev, Alexander I; Li, Xi; Wang, Lai-Sheng</p> <p>2006-05-25</p> <p>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> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_7");'>7</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li class="active"><span>9</span></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_9 --> <div id="page_10" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li class="active"><span>10</span></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="181"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.uni-greifswald.de/fileadmin/mp/e_dez4/zpa/PO/Bachelor_of_Arts/Deutsch_als_Fremdsprache/PO_B_A__DaF-2009.pdf"><span id="translatedtitle">Fachprfungsordnung fr den Bachelor-Teilstudiengang Deutsch <span class="hlt">als</span> Fremdsprache</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Greifswald, Ernst-Moritz-Arndt-Universität</p> <p></p> <p>Fachprüfungsordnung für den Bachelor-Teilstudiengang Deutsch <span class="hlt">als</span> Fremdsprache an der Ernst Bachelor-Teilstudiengang Deutsch <span class="hlt">als</span> Fremd- sprache <span class="hlt">als</span> Satzung: Inhaltsverzeichnis § 1 Geltungsbereich § 2- Teilstudiengang Deutsch <span class="hlt">als</span> Fremdsprache. Ergänzend gilt die Gemeinsa- me Prüfungsordnung für Bachelor- und Master</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015JEMat..44.1919H"><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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>He, Dan-qi; Zhao, Wen-Yu; Mu, Xin; Zhou, Hong-yu; Zhang, Qing-jie</p> <p>2015-06-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&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> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Takeshi Izumi; Takumi Nishimoto; Toshio Narita</p> <p>2003-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://psi.ece.jhu.edu/~kaplan/PUBL/AEK.pubs/Kap_Bjo_Sm_Tom.Pat.US4410239.pdf"><span id="translatedtitle">United States Patent [191 Kaplan et <span class="hlt">al</span>.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Kaplan, Alexander</p> <p></p> <p>..................................... .. 372/96 _ `1 OTHER PUBLICATIONS Javan et <span class="hlt">al</span>., "Possibility of Self-Focusing Due to Inten NONLINEAR", IEEE Jr. Quantum Electronics, QE 2, 9/66, pp. 470-475. Bjorkholm et <span class="hlt">al</span>., "CW Self-Focusing & Self is based on self focusing of light. Self-focusing occurs when a light beam having a nonuniform spatial pro</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.astro.umd.edu/~white/WG3/HESSI6_Bastian_submm.pdf"><span id="translatedtitle">4 November 2003 Kaufmann et <span class="hlt">al</span>. 2005</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>White, Stephen</p> <p></p> <p>SST 405 GHz SST 212 GHz OVSA Largest SXR flare recorded: X28, possibly as large as X45 (Neil et <span class="hlt">al</span>-emitting values. #12;Kaufmann et <span class="hlt">al</span>. 2004 4 November 2003 SST 405 GHz SST 212 GHz OVSA Largest SXR flare recorded</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Church, George M.</p> <p></p> <p>United States Patent [19] Church et <span class="hlt">al</span>. [54] CHARACTERIZATION OF INDIVIDUAL POLYMER MOLECULES BASED of Search ............................ 435/6. 4. 5; 43612. 436/151 [56] References Cited PUBUCATIONS Auld et of the Volt- age-Dependent Sodium Channel". 1990, Proc. Natl. Acad. Sci. USA, 87:323-27. Bensirnon. A.. et <span class="hlt">al</span></p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.photonics.ucla.edu/media/publication/patent/US5793907.pdf"><span id="translatedtitle">United States Patent [191 Jalali et <span class="hlt">al</span>.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Jalali. Bahram</p> <p></p> <p>antennas: SPIE vol. 1703 (1992) 264-271. GA Magel et <span class="hlt">al</span>.: "Phosphosilicate Glass waveguides for phased-Loss Fiber Optic Time-Delay Ele ment for Phased-Array Antennas." SPIE 194/1450-6/94 vol. 2155. pp. 13/vol. 31 No. 35 pp. 7395-7397. Goutzoulis et <span class="hlt">al</span>.; Hardware-compressive 2-D ?ber optic delay line</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Boyer, Edmond</p> <p></p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.mol.biol.ethz.ch/groups/wider_group/publications/WIDER_jbc282.33859s.pdf"><span id="translatedtitle">Supplementary Material -Haugstetter et <span class="hlt">al</span>. SUPPLEMENTARY MATERIAL</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Wider, Gerhard</p> <p></p> <p>Supplementary Material - Haugstetter et <span class="hlt">al</span>. 1 SUPPLEMENTARY MATERIAL Molecular Modeling of the TMX3 by a row of dots). The dots above the sequence mark every tenth residue in TMX3. #12;Supplementary Material;Supplementary Material - Haugstetter et <span class="hlt">al</span>. 3 Determination of the rate-limiting step in peptide oxidation</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.ldeo.columbia.edu/~jsmerdon/papers/2011_grl_smerdonetal_am.pdf"><span id="translatedtitle">SMERDON ET <span class="hlt">AL</span>.: AUXILIARY MATERIAL Auxiliary Material</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Smerdon, Jason E.</p> <p></p> <p>SMERDON ET <span class="hlt">AL</span>.: AUXILIARY MATERIAL 1 Auxiliary Material Spatial Performance of Four Climate Field). We nevertheless perform additional PPEs later in this Auxiliary Material that test CFR performance;SMERDON ET <span class="hlt">AL</span>.: AUXILIARY MATERIAL 2 ECHO-g simulations, respectively. The above conventions</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=ERIC&redirectUrl=http://eric.ed.gov/?q=sculpture&id=EJ997797"><span id="translatedtitle">Diana <span class="hlt">Al</span>-Hadid: Identity and Heritage</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Jungerberg, Tom; Smith, Anna; Borsh, Colleen</p> <p>2012-01-01</p> <p>Diana <span class="hlt">Al</span>-Hadid's sculptures reflect the many locations, cultures, histories, and mythologies that have shaped her as an artist. In large-scale works which have the appearance of architectural ruins, <span class="hlt">Al</span>-Hadid employs imagery drawn from many diverse interests including science and technology, history, and literature. She also incorporates images and…</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Jones, Russell H.; Vetrano, John S.; Windisch, Charles F.</p> <p>2004-12-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://eprint.iacr.org/2008/297.pdf"><span id="translatedtitle">Attack on Kang et <span class="hlt">al.'s</span> Identity-Based Strong Designated Verifier Signature Scheme</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p>, China 2 Mathematics Department, Baoji University of Arts and Sciences, Baoji 721007, China E-mail: duhongzhen@gmail.com Abstract: In this paper, we present a universal forgery attack on Kang et <span class="hlt">al.'s</span> identity</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40280131"><span id="translatedtitle">Formation of Ti 3<span class="hlt">Al</span>C 2\\/<span class="hlt">Al</span> 2O 3 and Ti 2<span class="hlt">AlC\\/Al</span> 2O 3 composites by combustion synthesis in Ti–<span class="hlt">Al</span>–C–TiO 2 systems</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>C. L. Yeh; C. W. Kuo; Y. C. Chu</p> <p>2010-01-01</p> <p>Preparation of Ti3<span class="hlt">Al</span>C2\\/<span class="hlt">Al</span>2O3 and Ti2<span class="hlt">AlC\\/Al</span>2O3 in situ composites was conducted by combustion synthesis in the mode of self-propagating high-temperature synthesis (SHS). The SHS process incorporates the thermite reaction of <span class="hlt">Al</span> with TiO2 into solid state combustion of the Ti–<span class="hlt">Al</span>–C system. The extent of thermite reaction involved in the SHS process was studied on the product composition and combustion behavior. It</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2011-06-14/pdf/2011-14629.pdf"><span id="translatedtitle">76 FR 34750 - United States et <span class="hlt">al</span>. v. Comcast Corp., et <span class="hlt">al</span>.; Public Comments and Response on Proposed Final...</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-06-14</p> <p>...DEPARTMENT OF JUSTICE Antitrust Division United States et <span class="hlt">al</span>. v. Comcast Corp., et <span class="hlt">al</span>.; Public Comments and Response on Proposed Final...received on the proposed Final Judgment in United States et <span class="hlt">al</span>. v. Comcast Corp. et <span class="hlt">al</span>., Civil Action...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://xray.engr.wisc.edu/publications/Imhoff%20et%20al%20J%20Appl%20Phys%202012.pdf"><span id="translatedtitle">Kinetic transition in the growth of <span class="hlt">Al</span> nanocrystals in <span class="hlt">Al</span>-Sm alloys S. D. Imhoff, J. Ilavsky, F. Zhang, P. Jemian, P. G. Evans et <span class="hlt">al</span>.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Evans, Paul G.</p> <p></p> <p>Kinetic transition in the growth of <span class="hlt">Al</span> nanocrystals in <span class="hlt">Al</span>-Sm alloys S. D. Imhoff, J. Ilavsky, F://jap.aip.org/authors #12;Kinetic transition in the growth of <span class="hlt">Al</span> nanocrystals in <span class="hlt">Al</span>-Sm alloys S. D. Imhoff,1 J. Ilavsky,2 F January 2012; accepted 22 February 2012; published online 29 March 2012) The formation of <span class="hlt">Al</span> nanocrystals</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2010JPhCS.240a2084S"><span id="translatedtitle">High temperature creep behaviour of <span class="hlt">Al</span>-rich Ti-<span class="hlt">Al</span> alloys</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Sturm, D.; Heilmaier, M.; Saage, H.; Aguilar, J.; Schmitz, G. J.; Drevermann, A.; Palm, M.; Stein, F.; Engberding, N.; Kelm, K.; Irsen, S.</p> <p>2010-07-01</p> <p>Compared to Ti-rich ?-Ti<span class="hlt">Al</span>-based alloys <span class="hlt">Al</span>-rich Ti-<span class="hlt">Al</span> alloys offer an additional reduction of in density and a better oxidation resistance which are both due to the increased <span class="hlt">Al</span> content. Polycrystalline material was manufactured by centrifugal casting. Microstructural characterization was carried out employing light-optical, scanning and transmission electron microscopy and XRD analyses. The high temperature creep of two binary alloys, namely <span class="hlt">Al</span>60Ti40 and <span class="hlt">Al</span>62Ti38 was comparatively assessed with compression tests at constant true stress in a temperature range between 1173 and 1323 K in air. The alloys were tested in the cast condition (containing various amounts of the metastable phases <span class="hlt">Al</span>5Ti3 and h-<span class="hlt">Al</span>2Ti) and after annealing at 1223 K for 200 h which produced (thermodynamically stable) lamellar ?-Ti<span class="hlt">Al</span> + r-<span class="hlt">Al</span>2Ti microstructures. In general, already the as-cast alloys exhibit a reasonable creep resistance at 1173 K. Compared with <span class="hlt">Al</span>60Ti40, both, the as-cast and the annealed <span class="hlt">Al</span>62Ti38 alloy exhibit better creep resistance up to 1323 K which can be rationalized by the reduced lamella spacing. The assessment of creep tests conducted at identical stress levels and varying temperatures yielded apparent activation energies for creep of Q = 430 kJ/mol for the annealed <span class="hlt">Al</span>60Ti40 alloy and of Q = 383 kJ/mol for the annealed <span class="hlt">Al</span>62Ti38 material. The latter coincides well with that of <span class="hlt">Al</span> diffusion in ?-Ti<span class="hlt">Al</span>, whereas the former can be rationalized by the instability of the microstructure containing metastable phases.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/55062997"><span id="translatedtitle">The nature of the Fe<span class="hlt">Al</span>3 liquid-(FeMn)<span class="hlt">Al</span>6</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>W. T. Denholm; J. D. Esdaile; N. G. Siviour; B. W. Wilson</p> <p>1987-01-01</p> <p>Crystallization studies using an inverted L pattern of liquid aluminum alloys of compositions just to the right of the ternary point, and the application of a theoretical analysis of the behavior of a hypothetical system, show that the Fe<span class="hlt">Al</span>3-(FeMn)<span class="hlt">Al</span>6-liquid reaction is peritectic close to the ternary point, and that the invariant reaction is eutectic, i.e., L = Fe<span class="hlt">Al</span>3 + (FeMn)<span class="hlt">Al</span>6</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19980019510&hterms=alternating+current+corrosion&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dalternating%2Bcurrent%2Bcorrosion"><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> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Danford, M. D.; Mendrek, M. J.</p> <p>1998-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&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> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Yang, Sheng-Min; Chang, Yin-Yu; Lin, Dong-Yih; Wang, Da-Yung; Wu, Weite</p> <p>2009-02-01</p> <p>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> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_8");'>8</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li class="active"><span>10</span></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_10 --> <div id="page_11" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li class="active"><span>11</span></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="201"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/46502444"><span id="translatedtitle">The structure of interphase boundaries in <span class="hlt">Al-CuAl</span> 2 curved eutectic crystals</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>G. G. Rmong; C. G. Rhodes</p> <p>1974-01-01</p> <p>Direction lly solidified crystals were grown in which the <span class="hlt">Al-CuAl</span>2 interphase boundary was uniformly misoriented by 6-8 deg with respect to the usual crystallographic relations interface \\u000a $$\\\\left\\\\| {(1\\\\overline 1 1)_{<span class="hlt">Al</span>} } \\\\right.\\\\left\\\\| {(21\\\\overline 1 )_{Cu<span class="hlt">Al</span>_2 } } \\\\right.$$\\u000a . The rrays of features then found in the boundary were shown to be ledges by transmission electron microscopy. These ledges\\u000a could</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/26350159"><span id="translatedtitle">Examination of wire electrical discharge machining of <span class="hlt">Al</span> 2O 3p\\/6061<span class="hlt">Al</span> composites</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Biing Hwa Yan; Hsien Chung Tsai; Fuang Yuan Huang; Long Chorng Lee</p> <p>2005-01-01</p> <p>Alumina particle reinforced 6061 aluminum matrix composites (<span class="hlt">Al</span>2O3p\\/6061<span class="hlt">Al</span>) have excellent physical and chemical properties than those of a traditional metal; however, their poor machinability lead to worse surface quality and serious cutting tool wear. In this study, wire electrical discharge machining (WEDM) is adopted in machining <span class="hlt">Al</span>2O3p\\/6061<span class="hlt">Al</span> composite. In the experiments, machining parameters of pulse-on time were changed to explore</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2003EAEJA....14868S"><span id="translatedtitle"><span class="hlt">AL</span>(0) in municipal waste incinerator ash</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Stipp, S. L.; Ronsbo, J. G.; Zunic, T. B.; Christensen, T. H.</p> <p>2003-04-01</p> <p>Disposal of municipal waste is a challenge to society. Waste volume is substantially decreased by incineration but residual ash usually contains a number of toxic components which must be immobilised to insure environmental protection. One element, chromium, is mobile and toxic in its oxidised state as Cr(VI) but it can be reduced to Cr(III) and immobilised. Reduction can be promoted by ash treatment with Fe(0) or Fe(II), but recent evidence shows that at least some Cr(VI) is reduced spontaneously in the ash. Aspects of ash behaviour suggest metallic aluminium as the reducing agent, but no direct evidence of <span class="hlt">Al</span>(0) has been found until now. We examined filter ash from an energy-producing, municipal-waste incinerator (Vest-forbrænding) near Copenhagen. X-ray diffraction (XRD) identified expected salts of Na, K and Ca such as halite, sylvite, calcite, anhydrite and gypsum as well as quartz, feldspar and some hematite. Wave-dispersive electron microprobe produced elemen-tal maps of the ash; <span class="hlt">Al</span>-rich areas were analysed quantitatively by comparison with standards. We identified metallic <span class="hlt">Al</span> particles, averaging 50 to 100 micrometers in di-ameter, often with a fractured, glassy border of aluminum oxide. The particles were porous, explaining fast Cr(VI) reduction and they contained thin exsolution lamellae of <span class="hlt">Al</span>-alloys of Pb and Cu or Mn, Fe and Ag, which provide clues of the <span class="hlt">Al</span>(0) origin in the waste. Sometimes <span class="hlt">Al</span>(0) occurred inside glassy globes of <span class="hlt">Al</span>2O3. Time-of-flight secondary ion mass spectroscopy (TOF-SIMS) and X-ray photoelectron spectroscopy (XPS) proved that surface <span class="hlt">Al</span> concentrations on ash particles were below detection, confirming reactivity of the <span class="hlt">Al</span>(0) bulk. The persistence of reduced <span class="hlt">Al</span> through the highly oxidising combustion procedure comes as a surprise and is a benefit in the immobilisation of Cr(VI) from municipal-waste incineration residues.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.bu.edu/admissions/files/library/media/accelerated_eval.pdf"><span id="translatedtitle">Boston University AccelerAted Medic<span class="hlt">Al</span> And dent<span class="hlt">Al</span> ProgrAMs</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Finzi, Adrien</p> <p></p> <p>Boston University AccelerAted Medic<span class="hlt">Al</span> And dent<span class="hlt">Al</span> ProgrAMs teAcher ev<span class="hlt">Al</span>UAtion To the applicant: Applicants to any of the College of Arts & Sciences' accelerated medical or dental programs must submit three</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/5875445"><span id="translatedtitle"><span class="hlt">Al</span>-Cu-Fe-Pd-Mn and <span class="hlt">Al</span>-Cr-Pd-Mn quasicrystalline alloys</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Chen Zhenhua (Univ. of Technology, Hunan (China). Powder Metallurgy Research Inst.); Inoue, Akihisa; Masumoto, Tsuyoshi (Tohoku Univ. (Japan). Metal Research Inst.)</p> <p>1993-12-15</p> <p>While searching for new multicomponent quasicrystalline alloys, the authors have suggested a principle of composition activity in the quasicrystal constitution. This means that some new quasicrystals can be constituted by adding several quasicrystalline alloy compositions, and these alloys can be obtained by means of rapid solidification or ingot processing. Guided by this principle, <span class="hlt">Al</span>-Mn-Cr, <span class="hlt">Al</span>-Cu-Fe-Mn, <span class="hlt">Al</span>-Cu-Fe-Cr, <span class="hlt">Al</span>-Cu-Fe-Cr-Mn, <span class="hlt">Al</span>-Mn-Ni-Ti, <span class="hlt">Al</span>-Mn-Fe-Ti, <span class="hlt">Al</span>-Cu-Fe-Ni-Ti and other multicomponent quasicrystalline alloys have been found. A recent study used <span class="hlt">Al</span>[sub 70]Pd[sub 20]Mn[sub 10], <span class="hlt">Al</span>[sub 65]Cu[sub 20]Fe[sub 15] and <span class="hlt">Al</span>[sub 85]Cr[sub 15] quasicrystalline alloys to formulate new alloys. Both <span class="hlt">Al</span>-Cu-Fe-Pd-Mn and <span class="hlt">Al</span>-Cr-Pd-Mn alloys are quasicrystalline. In this paper, they discuss these two quasicrystals, their formation, electronic diffraction and composition scope and thermal stability in detail.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/41024964"><span id="translatedtitle">An in situ composite of <span class="hlt">Al</span> (graphite, <span class="hlt">Al</span> 4C 3) produced by reciprocating extrusion</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Hsu-Shen Chu; Kuo-Shung Liu; Jien-Wei Yeh</p> <p>2000-01-01</p> <p>A reciprocating extrusion process was used to produce an in situ composite of <span class="hlt">Al</span> (graphite, <span class="hlt">Al</span>4C3). 6061 <span class="hlt">Al</span> alloy powder was first dehydrated at 450°C in vacuum, and then mixed with graphite powder in various volume fractions up to 20%. The mixed powder was hot pressed as a billet and finally consolidated by a reciprocating extrusion machine. Each billet was</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://defects.physics.wsu.edu/Al3Zr-ppt.pdf"><span id="translatedtitle">Site preferences of indium impurity atoms in intermetallics having <span class="hlt">Al</span>3Ti and <span class="hlt">Al</span>3Zr crystal structures</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Collins, Gary S.</p> <p></p> <p>Site preferences of indium impurity atoms in intermetallics having <span class="hlt">Al</span>3Ti and <span class="hlt">Al</span>3Zr crystal · Indium was doped in samples of <span class="hlt">Al</span>3V and <span class="hlt">Al</span>3Ti (<span class="hlt">Al</span>3Ti structure) and <span class="hlt">Al</span>3Zr (<span class="hlt">Al</span>3Zr structure) by arc-melting; doping at 10 ppb level. · Inequivalent <span class="hlt">Al</span>-sites occupied by indium solutes were identified by measuring</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2003AdSpR..32..225L"><span id="translatedtitle"><span class="hlt">Al?Al</span> 3Ni eutectic alloy and <span class="hlt">AL</span>/WC(NI) composite directionally solidified under microgravity and normal gravity</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Luo, X.-H.; Huang, Q.; Liu, B.-D.; Zhang, X.-M.; Li, Y.-Y.</p> <p>2003-07-01</p> <p>Directional solidification of <span class="hlt">Al?Al</span> 3Ni eutectic alloy and <span class="hlt">Al</span>/WC(Ni) composite were performed in the Multi-functional Crystal Growing Furnace on board the unmanned Chinese Shenzhou II spacecraft and on the ground respectively. The microstructures of the samples were investigated applying metallographic, SEM, XRD and image analysis techniques. Many differences were found between the space samples and the ground samples. It could be concluded that gravity condition had a strong influence on the solidification behavior of materials. The temperature gradient driven convection, i.e. Marangoni Convection, played an apparent role on the formation of solidification microstructure under microgravity.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2009JNuM..394..160P"><span id="translatedtitle">Phase constituents of <span class="hlt">Al</span>-rich U-Mo-<span class="hlt">Al</span> alloys examined by transmission electron microscopy</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Perez, E.; Ewh, A.; Liu, J.; Yuan, B.; Keiser, D. D., Jr.; Sohn, Y. H.</p> <p>2009-11-01</p> <p>To supplement the understanding of diffusional interactions involving <span class="hlt">Al</span>-rich region of the U-Mo-<span class="hlt">Al</span> system, alloys with composition 85.7<span class="hlt">Al</span>-11.44U-2.86Mo and 87.5<span class="hlt">Al</span>-10U-2.5Mo in at.%, were examined to determine the equilibrium phase constituents at 500 °C. These alloys were triple arc-melted, homogenized at 500 °C for 200 h, and water-quenched to preserve the high temperature microstructure. X-ray diffraction, scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (XEDS), and transmission electron microscopy (TEM) with high angle annular dark field (HAADF) imaging via scanning transmission electron microscopy (STEM) were employed for the characterization. Alloy specimens for TEM/STEM were prepared using site-specific focused ion beam (FIB) in situ lift-out (INLO) technique. Despite the homogenization time and temperature, five different phases, namely fcc-<span class="hlt">Al</span> solid solution, cubic-UAl 3, orthorhombic-UAl 4, hexagonal-U 6Mo 4<span class="hlt">Al</span> 43 and diamond cubic-UMo 2<span class="hlt">Al</span> 20, were observed. Based on U-<span class="hlt">Al</span>, U-Mo and <span class="hlt">Al</span>-Mo binary phase diagrams, previously proposed U-Mo-<span class="hlt">Al</span> isotherms, and the solidification microstructure of these alloys, the <span class="hlt">Al</span>-rich region of the equilibrium ternary isotherm at 500 °C was constructed. The fcc-<span class="hlt">Al</span> solid solution, orthorhombic-UAl 4, and diamond cubic-UMo 2<span class="hlt">Al</span> 20 which were determined to be the equilibrium phases in 85.7<span class="hlt">Al</span>-11.44U-2.86Mo and 87.5<span class="hlt">Al</span>-10U-2.5Mo alloys.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/974421"><span id="translatedtitle">Phase Constituents of <span class="hlt">Al</span>-rich U-Mo-<span class="hlt">Al</span> Alloys Examined by Transmission Electron Microscopy</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>E. Perez; A. Ewh; J. Liu; B. Yuan; D. D. Keiser, Jr.; Y. H. Sohn</p> <p>2009-11-01</p> <p>To supplement the understanding of diffusional interactions involving <span class="hlt">Al</span>-rich region of the U-Mo-<span class="hlt">Al</span> system, alloys with composition 85.7<span class="hlt">Al</span>-11.44U-2.86Mo and 87.5<span class="hlt">Al</span>-10U-2.5Mo in at.%, were examined to determine the equilibrium phase constituents at 500?C. These alloys were triple arc-melted, homogenized at 500?C for 200 hours, and water-quenched to preserve the high temperature microstructure. X-ray diffraction, scanning electron microscopy (SEM) with energy dispersive x-ray spectroscopy (XEDS), and transmission electron microscopy (TEM) with high angle annular dark field (HAADF) imaging via scanning transmission electron microscopy (STEM) were employed for the characterization. Alloy specimens for TEM/STEM were prepared using site-specific focused ion beam (FIB) in-situ lift-out (INLO) technique. Despite the homogenization time and temperature, five different phases, namely fcc-<span class="hlt">Al</span> solid solution, cubic-UAl3, orthorhombic-UAl4, hexagonal-U6Mo4<span class="hlt">Al</span>43 and diamond cubic-UMo2<span class="hlt">Al</span>20, were observed. Based on U-<span class="hlt">Al</span>, U-Mo and <span class="hlt">Al</span>-Mo binary phase diagrams, previously proposed U-Mo-<span class="hlt">Al</span> isotherms, and the solidification microstructure of these alloys, the <span class="hlt">Al</span>-rich region of the equilibrium ternary isotherm at 500?C was constructed. The fcc-<span class="hlt">Al</span> solid solution, orthorhombic-UAl4, and diamond cubic-UMo2<span class="hlt">Al</span>20, which were determined to be the equilibrium phases in 85.7<span class="hlt">Al</span>-11.44U-2.86Mo and 87.5<span class="hlt">Al</span>-10U-2.5Mo alloys.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19910043314&hterms=Alumina&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3DAlumina"><span id="translatedtitle">Reaction of Ti and Ti-<span class="hlt">Al</span> alloys with alumina</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Misra, Ajay K.</p> <p>1991-01-01</p> <p>The reaction of single-crystal <span class="hlt">Al</span>2O3 with pure Ti and Ti-<span class="hlt">Al</span> alloys with different <span class="hlt">Al</span> concentrations was examined in the temperature range of 1173 to 1573 K. Significant reaction occurred between <span class="hlt">Al</span>2O3 and the Ti-<span class="hlt">Al</span> alloys with <span class="hlt">Al</span> concentrations lower than that corresponding to the gamma-Ti<span class="hlt">Al</span> phase. The reaction mechanism was determined to be simultaneous diffusion of <span class="hlt">Al</span> and atomic oxygen from <span class="hlt">Al</span>2O3 into Ti and the Ti-<span class="hlt">Al</span> alloys.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/296638"><span id="translatedtitle">Effects of hydrogen absorption in TbNi<span class="hlt">Al</span> and UNi<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Bordallo, H.N. [Los Alamos National Lab., NM (United States). Manuel Lujan Jr. Neutron Scattering Center; Nakotte, H. [New Mexico State Univ., Las Cruces, NM (United States); Schultz, A. [Argonne National Lab., IL (United States). Intense Pulsed Neutron Source; Kolomiets, A.V.; Havela, L.; Andreev, A.V. [Charles Univ., Prague (Czech Republic). Dept. of Metal Physics</p> <p>1998-12-31</p> <p>Although hydrides of intermetallic compounds are used extensively as hydrogen-storage media, little is known about the exact nature of metal-hydrogen interactions. However, this knowledge is of essential importance for the understanding of thermodynamics and other properties. Hydrides (deuterides) of TbNi<span class="hlt">Al</span> and UNi<span class="hlt">Al</span> have been widely studied because of drastic increase of magnetic ordering temperature under hydrogenation. Here the authors report neutron-diffraction results of the three deuterides, TbNi<span class="hlt">Al</span>D{sub 1.28}, TbNi<span class="hlt">Al</span>D{sub 0.8}a nd UNi<span class="hlt">Al</span>D{sub 2.23}.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.springerlink.com/index/ug5rq8u235503375.pdf"><span id="translatedtitle">The nature of the Fe<span class="hlt">Al</span> 3 liquid-(FeMn)<span class="hlt">Al</span> 6</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>W. T. Denholm; J. D. Esdaile; N. G. Siviour; B. W. Wilson</p> <p>1987-01-01</p> <p>Crystallization studies using an invertedL pattern of liquid aluminum alloys of compositions just to the right of the ternary point, and the application of a theoretical\\u000a analysis of the behavior of a hypothetical system, show that the Fe<span class="hlt">Al</span>3-(FeMn)<span class="hlt">Al</span>6-liquid reaction is peritectic close to the ternary point, and that the invariant reaction is eutectic,i.e., L = Fe<span class="hlt">Al</span>3 + (FeMn)<span class="hlt">Al</span>6 + <span class="hlt">Al</span>(C).</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&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> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Y.-F. Wu; B. P. Keller; P. Fini; S. Keller; T. J. Jenkins; L. T. Kehias; S. P. Denbaars; U. K. Mishra</p> <p>1998-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/697075"><span id="translatedtitle">Evaluating Zn, <span class="hlt">Al</span> and <span class="hlt">Al</span>-Zn coatings on carbon steel in a special atmosphere</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Troconis de Rincon, O.; Delgado, R.; Lopez, B. [Univ. del Zulia, Maracaibo (Venezuela). Centro de Estudios de Corrosion; Uruchutu, J. [Univ. de Cuernavaca (Mexico)</p> <p>1999-11-01</p> <p>This paper presents a comparative evaluation of <span class="hlt">Al</span>, Zn and <span class="hlt">Al</span>-Zn coatings on carbon steel exposed to a coastal-marine atmosphere. It is a very aggressive atmosphere with high wind velocities (corrosion-erosion rate = 1.4 mm/year for ASTM 1029 steel). A metallized zinc coating with a pore sealer was also evaluated. ISO and ASTM standards were used for the evaluation. After a two-year exposure the best performance was achieved by the <span class="hlt">Al</span> and <span class="hlt">Al</span> rich alloy (85%<span class="hlt">Al</span>-15%Zn) with some damage of the coatings. But the Zn metallized coating, with a pore sealer, did not show signs of damage.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25753730"><span id="translatedtitle">RNA-targeted Therapeutics for <span class="hlt">ALS</span>.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Reddy, Linga V; Miller, Timothy M</p> <p>2015-04-01</p> <p>Amyotrophic lateral sclerosis (<span class="hlt">ALS</span>) is a neurodegenerative disease leading to cell death of predominantly motor neurons. Despite extensive research in this disease, finding a way to slow the progress of the disease has been challenging. RNA-targeted therapeutic approaches, including small interfering RNA and antisense oligonucleotides are being developed for genetic forms of <span class="hlt">ALS</span>. <span class="hlt">ALS</span> provides an unique opportunity for the use of RNA inhibition strategies given a well-defined animal model, extensive available information regarding the causative genes, and recent experience in phase 1 clinical trial. PMID:25753730</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Liu, C.T.</p> <p>1993-10-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/22116017"><span id="translatedtitle">Thermal diffusion in Ni/<span class="hlt">Al</span> multilayer</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>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>2013-02-05</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2013AIPC.1512..678S"><span id="translatedtitle">Thermal diffusion in Ni/<span class="hlt">Al</span> multilayer</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Swain, M.; Bhattacharya, D.; Singh, S.; Gupta, M.; Basu, S.</p> <p>2013-02-01</p> <p>Two Ni/<span class="hlt">Al</span> multilayers deposited by ion beam sputtering of nominal design [Ni(200Å)/<span class="hlt">Al</span>(100Å)]×5 and [Ni(50Å)/<span class="hlt">Al</span>(227Å)]×5 on Si substrates were annealed at 200°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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2012JChPh.137m4303K"><span id="translatedtitle"><span class="hlt">Al</span>6H18: A baby crystal of ?-<span class="hlt">Al</span>H3</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kiran, B.; Kandalam, Anil K.; Xu, Jing; Ding, Y. H.; Sierka, M.; Bowen, K. H.; Schnöckel, H.</p> <p>2012-10-01</p> <p>Using global-minima search methods based on the density functional theory calculations of (<span class="hlt">Al</span>H3)n (n = 1-8) clusters, we show that the growth pattern of alanes for n ? 4 is dominated by structures containing hexa-coordinated <span class="hlt">Al</span> atoms. This is in contrast to the earlier studies where either linear or ring structures of <span class="hlt">Al</span>H3 were predicted to be the preferred structures in which the <span class="hlt">Al</span> atoms can have a maximum of five-fold coordination. Our calculations also reveal that the <span class="hlt">Al</span>6H18 cluster, with its hexa-coordination of the <span class="hlt">Al</span> atoms, resembles the unit-cell of ?-<span class="hlt">Al</span>H3, thus <span class="hlt">Al</span>6H18 is designated as the "baby crystal." The fragmentation energies of the (<span class="hlt">Al</span>H3)n (n = 2-8) along with the dimerization energies for even n clusters indicate an enhanced stability of the <span class="hlt">Al</span>6H18 cluster. Both covalent (hybridization) and ionic (charge) contribution to the bonding are the driving factors in stabilizing the isomers containing hexa-coordinated <span class="hlt">Al</span> atoms.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_9");'>9</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li class="active"><span>11</span></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_11 --> <div id="page_12" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="221"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2008ApSS..254.1636Y"><span id="translatedtitle">Microstructure and mechanical properties of <span class="hlt">Al</span> 2O 3-<span class="hlt">Al</span> composite coatings deposited by plasma spraying</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Yin, Zhijian; Tao, Shunyan; Zhou, Xiaming; Ding, Chuanxian</p> <p>2008-01-01</p> <p><span class="hlt">Al</span> 2O 3 and <span class="hlt">Al</span> 2O 3-<span class="hlt">Al</span> composite coatings were prepared by plasma spraying. Phase composition of powders and as-sprayed coatings was determined by X-ray diffraction (XRD), while optical microscopy (OM) and scanning electron microscopy (SEM) were employed to investigate the morphology of impacted droplets, polished and fractured surface, and the element distribution in terms of wavelength-dispersive spectrometer (WDS). Mechanical properties including microhardness, adhesion and bending strength, fracture toughness and sliding wear rate were evaluated. The results indicated that the addition of <span class="hlt">Al</span> into <span class="hlt">Al</span> 2O 3 was beneficial to decrease the splashing of impinging droplets and to increase the deposition efficiency. The <span class="hlt">Al</span> 2O 3-<span class="hlt">Al</span> composite coating exhibited homogeneously dispersed pores and the co-sprayed <span class="hlt">Al</span> particles were considered to be distributed in the splat boundary. Compared with <span class="hlt">Al</span> 2O 3 coating, the composite coating showed slightly lower hardness, whereas the coexistence of metal <span class="hlt">Al</span> phase and <span class="hlt">Al</span> 2O 3 ceramic phase effectively improved the toughness, strength and wear resistance of coatings.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015APExp...8d2603R"><span id="translatedtitle">Optical characterization of <span class="hlt">Al</span>- and N-polar <span class="hlt">Al</span>N waveguides for integrated optics</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Rigler, Martin; Buh, Jože; Hoffmann, Marc P.; Kirste, Ronny; Bobea, Milena; Mita, Seiji; Gerhold, Michael D.; Collazo, Ramon; Sitar, Zlatko; Zgonik, Marko</p> <p>2015-04-01</p> <p>Dispersion of the extraordinary and ordinary refractive indices of <span class="hlt">Al</span>- and N-polar <span class="hlt">Al</span>N waveguides is measured by multiple angle-of-incidence and spectroscopic ellipsometry techniques. The polarity-controlled <span class="hlt">Al</span>N layers are grown by metal–organic chemical vapor deposition on (0001)-sapphire substrates. Taking into consideration the different surface morphologies of the <span class="hlt">Al</span>- and N-polar <span class="hlt">Al</span>N waveguides, we propose two optical models to describe the measured ellipsometry data. The results indicate that there is no difference between the refractive indices of the <span class="hlt">Al</span>N grown in opposite directions, which confirms the potential of the <span class="hlt">Al</span>N lateral polar structures for use in nonlinear optical applications based on quasi phase matching.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/286891"><span id="translatedtitle">Selective oxidation of buried <span class="hlt">Al</span>GaAs versus <span class="hlt">Al</span>As layers</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Choquette, K.D.; Geib, K.M.; Chui, H.C.; Hammons, B.E.; Hou, H.Q.; Drummond, T.J. [Photonics Research Department, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)] [Photonics Research Department, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States); Hull, R. [Department of Materials Science, University of Virginia, Charlottesville, Virginia 22903 (United States)] [Department of Materials Science, University of Virginia, Charlottesville, Virginia 22903 (United States)</p> <p>1996-09-01</p> <p>We report significant differences between the properties of buried oxides converted from <span class="hlt">Al</span>GaAs and <span class="hlt">Al</span>As layers using selective wet oxidation. Layers of <span class="hlt">Al</span>{sub {ital x}}Ga{sub 1{minus}{ital x}}As with {ital x}{ge}0.96 exhibit crystallographic dependent oxidation rates, while for layers with {ital x}{le}0.92 the oxidation rate is isotropic. Mesas containing partially oxidized layers of <span class="hlt">Al</span>As are unstable to rapid thermal cycling and exhibit excessive strain at the oxide terminus, while mesas containing partially oxidized layers of <span class="hlt">Al</span>GaAs are robust and lack evidence of strain. Finally, the oxidation of <span class="hlt">Al</span>GaAs layers, rather than <span class="hlt">Al</span>As, is found to provide robust oxide apertures for reliable vertical-cavity surface emitting lasers. {copyright} {ital 1996 American Institute of Physics.}</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40280672"><span id="translatedtitle">An investigation on formation of Nb 2<span class="hlt">Al</span>C by combustion synthesis of Nb 2O 5–<span class="hlt">Al–Al</span> 4C 3 powder compacts</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>C. L. Yeh; C. W. Kuo</p> <p>2010-01-01</p> <p>Preparation of layered ternary carbide Nb2<span class="hlt">Al</span>C was conducted by combustion synthesis in the mode of self-propagating high-temperature synthesis (SHS) from Nb2O5–<span class="hlt">Al–Al</span>4C3 powder compacts. Effects of the contents of <span class="hlt">Al</span> and <span class="hlt">Al</span>4C3 on the product composition and combustion behavior were studied by adopting two series of sample stoichiometries with Nb2O5:<span class="hlt">Al:Al</span>4C3 varying from 3:9:1 to 3:13:1 (for supplying additional <span class="hlt">Al</span>) and 3:9:1</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>D. D. Keiser, Jr.; E. Perez; B. Yao; Y. H. Sohn</p> <p>2009-11-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.springerlink.com/index/8718001096w31471.pdf"><span id="translatedtitle">Separating method and dynamic processes of Nano-<span class="hlt">Al</span> 13</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Baoyu Gao; Yongbao Chu; Qinyan Yue; Chunyan Kong; Xiaona Wang</p> <p>2007-01-01</p> <p>In order to investigate the characteristics of pure Nano-<span class="hlt">Al</span>13, Nano-<span class="hlt">Al</span>13 was separated and purified from a series of poly-aluminum chloride (PAC) solutions which had the same <span class="hlt">Al</span>13 percentage but different total <span class="hlt">Al</span> concentrations, by using column chromatography, ethanol-acetone resolving and SO2?\\u000a 4\\/Ba2+ displacement. The <span class="hlt">Al</span>13 species yield was characterized by <span class="hlt">Al</span>-ferron timed complexation spectrophotometry and 27<span class="hlt">Al</span>-NMR (nuclear magnetic resonance). The</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&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> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Thakur, Keshav; Gupta, Pawan Kumar</p> <p>2013-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2012NIMPB.289...43M"><span id="translatedtitle">Cd ion implantation in <span class="hlt">Al</span>N</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Miranda, S. M. C.; Franco, N.; Alves, E.; Lorenz, K.</p> <p>2012-10-01</p> <p><span class="hlt">Al</span>N thin films were implanted with cadmium, to fluences of 1 × 1013 and 8 × 1014 at/cm2. The implanted samples were annealed at 950 °C under flowing nitrogen. Although implantation damage in <span class="hlt">Al</span>N is known to be extremely stable the crystal could be fully recovered at low fluences. At high fluences the implantation damage was only partially removed. Implantation defects cause an expansion of the c-lattice parameter. For the high fluence sample the lattice site location of the ions was studied by Rutherford Backscattering/Channelling Spectrometry. Cd ions are found to be incorporated in substitutional <span class="hlt">Al</span> sites in the crystal and no significant diffusion is seen upon thermal annealing. The observed high solubility limit and site stability are prerequisite for using Cd as p-type dopant in <span class="hlt">Al</span>N.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&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> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>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>2009-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4439492"><span id="translatedtitle"><span class="hlt">AL</span> Amyloidosis Complicated by Persistent Oral Bleeding</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Marconcini, Luiz Antonio Liarte; Stewart, Forrest Marc; Sonntag, Lisa; Stevens, Emily; Burwick, Nicholas</p> <p>2015-01-01</p> <p>A case of amyloid light chain (<span class="hlt">AL</span>) amyloidosis is presented here with uncontrolled bleeding after a nonsurgical dental procedure, most likely multifactorial in nature, and consequently treated with a multidisciplinary approach.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.utwente.nl/abvakabo/grensarbeid/persinformatie.pdf"><span id="translatedtitle">Binnenkort verschijnt <span class="hlt">Als</span> verhuizen emigreren is</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Al Hanbali, Ahmad</p> <p></p> <p>kinderen de Duitse taal beter beheersen dan hun ouders. De schrijvers van dit boek hebben grote waardering. Het boek is geschreven voor Nederlanders, die <span class="hlt">al</span> in Duitsland wonen of naar Duitsland willen verhuizen</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/6143418"><span id="translatedtitle">Half life of /sup 26/<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Norris, T.L.; Gancarz, A.J.; Rokop, D.J.; Thomas, K.W.</p> <p>1983-01-01</p> <p>The half-life of /sup 26/<span class="hlt">Al</span> has been redetermined because of suggestions of an error in the accepted value based on its use in calculating /sup 21/Ne production rates from cosmic rays in meteorites. Two solutions of /sup 26/<span class="hlt">Al</span> were analyzed for the specific radioactivity and mass spectrometric determination of the /sup 26/<span class="hlt">Al</span> concentration. The half-life obtained for /sup 26/<span class="hlt">Al</span> was 7.05 x 10/sup 5/ years +- 3.7% at the two sigma level. This is identical to the accepted value of 7.16 x 10/sup 5/ years and indicates that problems with the /sup 21/Ne production rate is not due to an erroneous half-life.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.uni-regensburg.de/studium/koordinierungsstelle-leistungspunkte/medien/fra_ita_kommentare_ss12.pdf"><span id="translatedtitle">Franzsische Sprachgeschichte <span class="hlt">als</span> Kulturgeschichte: Renaissance und Klassik</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Schubart, Christoph</p> <p></p> <p>36 000 VL Französische Sprachgeschichte <span class="hlt">als</span> Kulturgeschichte: Renaissance und Klassik 2st., Fr 10 ,,questione" in der Renaissance sollen die verschiedenen Etappen dieser Suche von der frühen Neuzeit bis</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/53441860"><span id="translatedtitle">Hydrogen diffusion in <span class="hlt">Al</span>-Li alloys</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>P. N. Anyalebechi</p> <p>1990-01-01</p> <p>The diffusion coefficients of hydrogen in binary <span class="hlt">Al</span>-Li alloys containing 1,2, and 3 wt pct Li have been determined from desorption curves of samples saturated with hydrogen at 473 to 873 K. Within this temperature range, the diffusivity of hydrogen in the binary <span class="hlt">Al</span>-Li alloys investigated has an Arrhenius-type temperature dependence and follows the equation of the general form D</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.springerlink.com/index/uh68186664266xj6.pdf"><span id="translatedtitle">Hydrogen diffusion in <span class="hlt">Al</span>-Li alloys</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>P. N. Anyalebechi</p> <p>1990-01-01</p> <p>The diffusion coefficients of hydrogen in binary <span class="hlt">Al</span>-Li alloys containing 1,2, and 3 wt pct Li have been determined from desorption\\u000a curves of samples saturated with hydrogen at 473 to 873 K. Within this temperature range, the diffusivity of hydrogen in the\\u000a binary <span class="hlt">Al</span>-Li alloys investigated has an Arrhenius-type temperature dependence and follows the equation of the general formD =</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40789047"><span id="translatedtitle">High temperature deformation of 6061 <span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Kyungtae Park; E. J. Lavernia; F. A. Mohamed</p> <p>1994-01-01</p> <p>The creep behavior of powder metallurgy (PM) 6061 <span class="hlt">Al</span>, which has been used as a metal matrix alloy in the development of discontinuous silicon carbide reinforced aluminum (SiC-<span class="hlt">Al</span>) composites, has been studied over six orders of magnitude of strain rate. The experimental data show that the steady-state stage of the creep curve is of short duration; that the stress dependence</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Robinson, Art; Tamura, Lori</p> <p>2004-11-29</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&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> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Logvinovich, Dmitry; Simonov, Arkadiy; Steurer, Walter</p> <p>2014-08-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/516447"><span id="translatedtitle">Modeling of precipitation in <span class="hlt">Al</span> alloys</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Asta, M.; Foiles, S.M.; Wolfer, W.G. [Sandia National Labs., Livermore, CA (United States)] [and others</p> <p>1996-10-01</p> <p>Objective was the development of a computational model of precipitation from a supersaturated alloy solid solution. The model is based on the formalism of chemical-reaction-rate theory combined with classical descriptions of precipitate thermodynamic properties and a mean-field treatment of diffusion-limited growht and coarsening. For the case of precipitation of <span class="hlt">Al</span>{sub 3}Sc in supersaturated <span class="hlt">Al</span>-Sc alloys, it is demonstrated how the model can be used to calculate number densities and size distributions of precipitates as a function of aging time and temperature, including effects of continuous cooling and thermally generated point defects. Application of the model to a specific alloy system requires knowledge of diffusion data, point defect energetics, and thermodynamic properties for bulk phases and interphase interfaces. For interfaces and point defects, thermodynamic data can be difficult to measure and reliable values of defect free energies are often unavailable. For this reason, part of the efforts were devoted to applying semiempirical and first-principles atomistic techniques to the calculation of interfacial and point-defect thermodynamic properties. This report discusses applications for interphase interfaces in the <span class="hlt">Al</span>-Ag, <span class="hlt">Al</span>-Sc, and <span class="hlt">Al</span>-Li alloy systems. We also describe atomistic work aimed at understanding the energetics of vacancy clusters in <span class="hlt">Al</span>. These clusters serve as sinks for isolated vacancies during aging and their growth can lead to more complex defects, such as dislocation loops, that act as heterogeneous nucleation sites.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/552877"><span id="translatedtitle">Incorporation of Cu and <span class="hlt">Al</span> in thin layer silicon grown from Cu-<span class="hlt">Al</span>-Si</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wang, T.H.; Ciszek, T.F. [National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, Colorado 80401 (United States of America)</p> <p>1997-02-01</p> <p>Cu and <span class="hlt">Al</span> concentrations in silicon thin layers grown from Cu-<span class="hlt">Al</span>-Si are determined by segregation at the solid-liquid interface, and for the fast diffusing Cu, also at the free silicon surface. Using the multicomponent regular solution model and experimental results, we found that Si-<span class="hlt">Al</span> and Si-Cu interactions in the liquid solution are repulsive, and <span class="hlt">Al</span>-Cu interaction is attractive. As a result, <span class="hlt">Al</span> incorporation as a function of Cu and <span class="hlt">Al</span> compositions in the growth solution is determined at about 900{degree}C. Up to 0.2{Omega}{center_dot}cm P-type resistivities caused by <span class="hlt">Al</span> doping are achieved because of suppression of <span class="hlt">Al</span> incorporation by Cu, yet with a substantial amount of <span class="hlt">Al</span> still present in the liquid for substrate surface-oxide removal. On the other hand, Cu concentration in the grown layers is reduced by <span class="hlt">Al</span> in the liquid during growth and by surface segregation after growth. The surface segregation phenomenon can be conveniently used to getter Cu from the bulk of silicon layers so that its concentration ({approximately}10{sup 16}cm{sup {minus}3}) is much lower than its solubility (2.5{times}10{sup 17}cm{sup {minus}3}) at the layer growth temperature and the reported 10{sup 17}cm{sup {minus}3} degradation onset for solar-cell performance. {copyright} {ital 1997 American Institute of Physics.}</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_10");'>10</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li class="active"><span>12</span></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_12 --> <div id="page_13" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="241"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2012AIPC.1426..275Z"><span id="translatedtitle">Air blast characteristics of laminated <span class="hlt">al</span> and NI-<span class="hlt">AL</span> casings</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zhang, Fan; Ripley, Robert; Wilson, William</p> <p>2012-03-01</p> <p>Air blast characteristics of <span class="hlt">Al</span> and Ni-<span class="hlt">Al</span> laminated materials were experimentally investigated in a 23 m3 closed chamber. Ni and <span class="hlt">Al</span> foils, 50 to 100 micrometers in thickness, were rolled and compacted to form a cylindrical casing with a density of 95% TMD through an explosive formation technique. Charges were prepared using 2 kg C4 explosive packed in the laminated casing to a metal-explosive mass ratio of 1.75. The blast pressure history measured on the chamber wall showed a double-shock front structure with a precursor shock followed by the primary blast. The front peak pressure for the Ni-<span class="hlt">Al</span> cased charge reaches 1.5-2 times that of the <span class="hlt">Al</span> cased, consistent with the larger fireball recorded for the Ni-<span class="hlt">Al</span> cased. The long time quasi-static explosion pressure (QSP) from the Ni- <span class="hlt">Al</span> cased charge is 0.8 of that of the <span class="hlt">Al</span> cased, due to half of <span class="hlt">Al</span> mass in the Ni-<span class="hlt">Al</span>.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/1185327"><span id="translatedtitle">Metastability in the Mg<span class="hlt">Al</span>2O4-<span class="hlt">Al</span>2O3 System</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wilkerson, Dr. Kelley R. [Missouri University of Science and Technology; Smith, Jeffrey D [ORNL; Hemrick, James Gordon [ORNL</p> <p>2014-01-01</p> <p>Aluminum oxide must take a spinel form ( -<span class="hlt">Al</span>2O3) at elevated temperatures in order for extensive solid solution to form between Mg<span class="hlt">Al</span>2O4 and -<span class="hlt">Al</span>2O3. The solvus line between Mg<span class="hlt">Al</span>2O4 and <span class="hlt">Al</span>2O3 has been dened at 79.6 wt% <span class="hlt">Al</span>2O3 at 1500C, 83.0 wt% <span class="hlt">Al</span>2O3 at 1600C, and 86.5 wt% <span class="hlt">Al</span>2O3 at 1700C. A metastable region has been dened at temperatures up to 1700C which could have signicant implications for material processing and properties. Additionally, initial processing could have major implications on nal chemistry. The spinel solid solution region has been extended to form an innite solid solution with <span class="hlt">Al</span>2O3 at elevated temperatures. A minimum in melting at 1975C and a chemistry of 96 wt% <span class="hlt">Al</span>2O3 rather than a eutectic is present, resulting in no eutectic crystal formation during solidication.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1994JChPh.101.6487B"><span id="translatedtitle">Spectroscopic analysis of the open 3d subshell transition metal aluminides: <span class="hlt">Al</span>V, <span class="hlt">Al</span>Cr, and <span class="hlt">Al</span>Co</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Behm, Jane M.; Brugh, Dale J.; Morse, Michael D.</p> <p>1994-10-01</p> <p>Three open 3d subshell transition metal aluminides, <span class="hlt">Al</span>V, <span class="hlt">Al</span>Cr, and <span class="hlt">Al</span>Co, have been investigated by resonant two-photon ionization spectroscopy to elucidate the chemical bonding in these diatomic molecules. The open nature of the 3d subshell results in a vast number of excited electronic states in these species, allowing bond strengths to be measured by the observation of abrupt predissociation thresholds in a congested optical spectrum, giving D00(<span class="hlt">Al</span>V)=1.489±0.010 eV, D00(<span class="hlt">Al</span>Cr)=2.272±0.009 eV, and D00(<span class="hlt">Al</span>Co)=1.844±0.002 eV. At lower excitation energies the presence of discrete transitions has permitted determinations of the ground state symmetries and bond lengths of <span class="hlt">Al</span>V and <span class="hlt">Al</span>Co through rotationally resolved studies, giving r0` (<span class="hlt">Al</span>V, ?`=0)=2.620±0.004 Å and r0` (<span class="hlt">Al</span>Co, ?`=3)=2.3833±0.0005 Å. Ionization energies were also measured for all three species, yielding IE(<span class="hlt">Al</span>V)=6.01±0.10 eV, IE(<span class="hlt">Al</span>Cr)=5.96±0.04 eV, and IE(<span class="hlt">Al</span>Co)=6.99±0.17 eV. A discussion of these results is presented in the context of previous work on <span class="hlt">Al</span>Cu, <span class="hlt">Al</span>Ni, <span class="hlt">Al</span>Ca, and <span class="hlt">Al</span>Zn.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2013JAP...114w3702H"><span id="translatedtitle">Optical microcavities and enhanced electroluminescence from electroformed <span class="hlt">Al-Al</span>2O3-Ag diodes</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Hickmott, T. W.</p> <p>2013-12-01</p> <p>Electroluminescence (EL) and electron emission into vacuum (EM) occur when a non-destructive dielectric breakdown of <span class="hlt">Al-Al</span>2O3-Ag diodes, electroforming, results in the development of a filamentary region in which current-voltage (I-V) characteristics exhibit voltage-controlled negative resistance. The temperature dependence of I-V curves, EM, and, particularly, EL of <span class="hlt">Al-Al</span>2O3-Ag diodes with anodic <span class="hlt">Al</span>2O3 thicknesses between 12 nm and 30 nm, has been studied. Two filters, a long-pass (LP) filter with transmission of photons with energies less than 3.0 eV and a short-pass (SP) filter with photon transmission between 3.0 and 4.0 eV, have been used to characterize EL. The voltage threshold for EL with the LP filter, VLP, is ˜1.5 V. VLP is nearly independent of <span class="hlt">Al</span>2O3 thickness and of temperature and is 0.3-0.6 V less than the threshold voltage for EL for the SP filter, VSP. EL intensity is primarily between 1.8 and 3.0 eV when the bias voltage, VS ? 7 V. EL in the thinnest diodes is enhanced compared to EL in thicker diodes. For increasing VS, for diodes with the smallest <span class="hlt">Al</span>2O3 thicknesses, there is a maximum EL intensity, LMX, at a voltage, VLMX, followed by a decrease to a plateau. LMX and EL intensity at 4.0 V in the plateau region depend exponentially on <span class="hlt">Al</span>2O3 thickness. The ratio of LMX at 295 K for a diode with 12 nm of <span class="hlt">Al</span>2O3 to LMX for a diode with 25 nm of <span class="hlt">Al</span>2O3 is ˜140. The ratio of EL intensity with the LP filter to EL intensity with the SP filter, LP/SP, varies between ˜3 and ˜35; it depends on <span class="hlt">Al</span>2O3 thickness and VS. Enhanced EL is attributed to the increase of the spontaneous emission rate of a dipole in a non-resonant optical microcavity. EL photons interact with the Ag and <span class="hlt">Al</span> films to create surface plasmon polaritons (SPPs) at the metal-<span class="hlt">Al</span>2O3 interfaces. SPPs generate large electromagnetic fields in the filamentary region of the electroformed <span class="hlt">Al-Al</span>2O3-Ag diode, which then acts as an optical microcavity. A model is proposed for electronic processes in electroformed <span class="hlt">Al-Al</span>2O3-Ag diodes.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920049226&hterms=protective+effect&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Dprotective%2Beffect"><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> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Doychak, J.; Hebsur, M. G.</p> <p>1991-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1996ApPhL..69.1385C"><span id="translatedtitle">Selective oxidation of buried <span class="hlt">Al</span>GaAs versus <span class="hlt">Al</span>As layers</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Choquette, Kent D.; Geib, K. M.; Chui, H. C.; Hammons, B. E.; Hou, H. Q.; Drummond, T. J.; Hull, Robert</p> <p>1996-09-01</p> <p>We report significant differences between the properties of buried oxides converted from <span class="hlt">Al</span>GaAs and <span class="hlt">Al</span>As layers using selective wet oxidation. Layers of AlxGa1-xAs with x?0.96 exhibit crystallographic dependent oxidation rates, while for layers with x?0.92 the oxidation rate is isotropic. Mesas containing partially oxidized layers of <span class="hlt">Al</span>As are unstable to rapid thermal cycling and exhibit excessive strain at the oxide terminus, while mesas containing partially oxidized layers of <span class="hlt">Al</span>GaAs are robust and lack evidence of strain. Finally, the oxidation of <span class="hlt">Al</span>GaAs layers, rather than <span class="hlt">Al</span>As, is found to provide robust oxide apertures for reliable vertical-cavity surface emitting lasers.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/244977"><span id="translatedtitle">Relationship between electrical conductivity and stress corrosion cracking susceptibility of <span class="hlt">Al</span> 7075 and <span class="hlt">Al</span> 7475 alloys</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Tsai, T.C.; Chuang, T.H. [National Taiwan Univ., Taipei (Taiwan, Province of China). Inst. of Materials Science and Engineering</p> <p>1996-06-01</p> <p>A relationship between electrical conductivity and stress corrosion cracking (SCC) resistance of the 7,000-series <span class="hlt">Al</span>-Zn-Mg alloys has been established, although only from the near-peak strength T6 temper to the overaged T73 tempered condition. The present work investigated whether this relationship exists for all periods of aging and for <span class="hlt">Al</span> alloys with different compositions and grain structures. The materials studied were commercial 2-mm thick <span class="hlt">Al</span> 7075 (<span class="hlt">Al</span>-5.76% Zn-2.46% Mg-1.70% Cu-0.20% Cr-0.12% Fe-0.09% Si-0.06% Mn-0.04% Ti) and <span class="hlt">Al</span> 7475 (<span class="hlt">Al</span>-5.80% Zn-2.24% Mg-1.53% Cu-0.19% Cr-0.08% Fe-0.02% Si-0.01% Mn-0.02% Ti) alloy plates.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19890059135&hterms=incoherent+metal&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dincoherent%2Bmetal"><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> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Doychak, J.; Ruhle, M.</p> <p>1989-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2005JaJAP..44L.760O"><span id="translatedtitle">Temperature Dependence of Tunnel Magnetoresistance in Co-Mn-<span class="hlt">Al/Al</span>-Oxide/Co-Fe Junctions</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Oogane, Mikihiko; Nakata, Jun; Kubota, Hitoshi; Ando, Yasuo; Sakuma, Akimasa; Miyazaki, Terunobu</p> <p>2005-06-01</p> <p>We investigated the temperature dependence of the tunnel magnetoresistance (TMR) effect in Co-Mn-<span class="hlt">Al/Al</span>-oxide/Co-Fe tunnel junctions. The junction prepared without exposure to air during deposition showed very large TMR ratios of 65% at 10 K and 40% at room temperature. In contrast, the junction prepared with air exposure before and after <span class="hlt">Al</span>-oxide layer fabrication showed a maximum TMR ratio of only 40% at a low temperature. Temperature dependences of tunnel conductance of these junctions were analyzed using a simple model that incorporates two contributions: elastic tunneling with decreasing spin polarization as temperature increases and spin-independent hopping tunneling through trap states in <span class="hlt">Al</span>-oxide tunnel barriers. Results of analyses indicated that air exposure drastically reduced spin polarization and Curie temperature. It also created an inferior insulating layer at the Co-Mn-<span class="hlt">Al/Al</span>-oxide interface.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19990008594&hterms=titanium+microstructure&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D60%26Ntt%3Dtitanium%2Bmicrostructure"><span id="translatedtitle">Two-Phase (Ti<span class="hlt">Al+TiCrAl</span>) Coating Alloys for Titanium Aluminides</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Brady, Michael P. (Inventor); Smialek, James L. (Inventor); Brindley, William J. (Inventor)</p> <p>1998-01-01</p> <p>A coating for protecting titanium aluminide alloys, including the Ti<span class="hlt">Al</span> gamma + Ti3<span class="hlt">Al</span> (alpha(sub 2)) class, from oxidative attack and interstitial embrittlement at temperatures up to at least 1000 C. is disclosed. This protective coating consists essentially of titanium, aluminum. and chromium in the following approximate atomic ratio: Ti(41.5-34.5)<span class="hlt">Al</span>(49-53)Cr(9.5-12.5)</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/26495778"><span id="translatedtitle">Structure and mechanical properties of Ni<span class="hlt">Al</span> and Ni 3<span class="hlt">Al</span>-based alloys</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Tomasz Czeppe; Stanislaw Wierzbinski</p> <p>2000-01-01</p> <p>The investigation of Ni–<span class="hlt">Al</span>–Fe–Ti–B alloys was carried out to determine the influence of iron and small titanium and boron additions on the phase composition, microstructure and mechanical characteristic, particularly with respect to high-temperature deformation conditions. These alloys, containing <span class="hlt">Al</span> 35.8 at% and Fe 3.6–8.6–17.6 at% were prepared from high-purity components and <span class="hlt">Al</span> master alloy containing Ti2B particles. The influence of</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/46502015"><span id="translatedtitle">Stability of the directionally solidified eutectics Ni<span class="hlt">Al</span>-Cr and Ni<span class="hlt">Al</span>-Mo</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>J. L. Walter; H. E. Cline</p> <p>1973-01-01</p> <p>The eutectics Ni<span class="hlt">Al</span>-Cr with cylindrical chromium fibers and Ni<span class="hlt">Al</span>-Mo with faceted molybdenum fibers were heated at 1400?C to\\u000a determine the stability of the composite structure and to compare the stability of the nonfaceted fibers with that of the\\u000a faceted fibers in the Ni<span class="hlt">Al</span> matrix. Fiber size and size distribution and number of fibers per unit area were measured as a</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25781510"><span id="translatedtitle">Remarks on Peinado et <span class="hlt">al.'s</span> Analysis of J3Gen.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Garcia-Alfaro, Joaquin; Herrera-Joancomartí, Jordi; Melià-Seguí, Joan</p> <p>2015-01-01</p> <p>Peinado et <span class="hlt">al</span>. analyzed the security of the J3Gen pseudorandom number generator proposed by Melià-Seguí et <span class="hlt">al</span>., and claimed weaknesses regarding its security properties. They also presented a deterministic attack based on the decimation of the J3Gen output sequences. We show that the assumptions made by Peinado et <span class="hlt">al</span>. are not correct and that the proposed deterministic attack against J3Gen does not hold in practice. PMID:25781510</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.springerlink.com/index/5x3374tr35464r94.pdf"><span id="translatedtitle">Combustion Synthesis Reactions in Cold-Rolled Ni\\/<span class="hlt">Al</span> and Ti\\/<span class="hlt">Al</span> Multilayers</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Xiaotun Qiu; Ranran Liu; Shengmin Guo; Jesse Harris Graeter; Laszlo Kecskes; Jiaping Wang</p> <p>2009-01-01</p> <p>In this article, a cold rolling method was developed to fabricate Ni\\/<span class="hlt">Al</span> and Ti\\/<span class="hlt">Al</span> multilayer foils, and the combustion synthesis\\u000a reactions in the cold-rolled foils were investigated. Combustion synthesis reactions were initiated by heating one end of\\u000a the cold-rolled foil in a flame for several seconds. The Ni\\/<span class="hlt">Al</span> foils went through three reaction stages. The first reaction\\u000a stage was a</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/55839621"><span id="translatedtitle">Combustion synthesis of Ni3<span class="hlt">Al</span> and Ni3<span class="hlt">Al</span>-matrix composites</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>J. P. Lebrat; A. Varma; A. E. Miller</p> <p>1992-01-01</p> <p>The self-propagating mode of combustion synthesis (SHS) of Ni3<span class="hlt">Al</span> starting from compacts of stoichiometrically mixed Ni and <span class="hlt">Al</span> powders readily forms fully reacted structures with about 3 to 5 pct porosity, if green density of the compacts is greater than about 75 pct of theoretical. SHS-produced Ni3<span class="hlt">Al</span> matrix composites with up to 2 wt pct A12O3 whiskers also have relatively</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/46500144"><span id="translatedtitle">Combustion synthesis of Ni 3 <span class="hlt">Al</span> and Ni 3 <span class="hlt">Al</span>-matrix composites</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>J. P. Lebrat; A. Varma; A. E. Miller</p> <p>1992-01-01</p> <p>The self-propagating mode of combustion synthesis (SHS) of Ni3<span class="hlt">Al</span> starting from compacts of stoichiometrically mixed Ni and <span class="hlt">Al</span> powders readily forms fully reacted structures with about\\u000a 3 to 5 pct porosity, if green density of the compacts is greater than about 75 pct of theoretical. SHS-produced Ni3<span class="hlt">Al</span> matrix composites with up to 2 wt pct A12O3 whiskers also have relatively</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/21055234"><span id="translatedtitle">High Performance <span class="hlt">AlInGaAs/Al</span>GaAs Photocathode</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mamaev, Yu. A.; Gerchikov, L. G.; Yashin, Yu. P.; Vasiliev, D. A.; Kuzmichev, V. V. [State Polytechnic University, 195251, St. Petersburg (Russian Federation); Ustinov, V. M.; Zhukov, A. E. [St. Petersburg Scientific-Educational Center RAS, 195251, St. Petersburg (Russian Federation); Mikhrin, V. S. [Ioffe Physico-Technical Institute, RAS, 194021, St. Petersburg (Russian Federation)</p> <p>2008-02-06</p> <p>New photocathode for highly polarized electron emission has been developed, fabricated and studied. Polarized electron source is based on short-period strained <span class="hlt">AlInGaAs/Al</span>GaAs superlattice grown by MBE method. Deformation of <span class="hlt">Al</span>InGaAs quantum well results in 85 meV energy splitting between heavy hole and light hole minibands. Electron emission from the developed photocathode demonstrates maximal polarization of 92% with quantum efficiency of 0.85%.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/1540360"><span id="translatedtitle"><span class="hlt">AlGaN\\/Al</span>N\\/GaN high-power microwave HEMT</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>L. Shen; S. Heikman; B. Moran; R. Coffie; N.-Q. Zhang; D. Buttari; I. P. Smorchkova; S. Keller; S. P. DenBaars; U. K. Mishra</p> <p>2001-01-01</p> <p>In this letter, a novel heterojunction <span class="hlt">AlGaN\\/Al</span>N\\/GaN high-electron mobility transistor (HEMT) is discussed. Contrary to normal HEMTs, the insertion of the very thin <span class="hlt">Al</span>N interfacial layer (~1 nm) maintains high mobility at high sheet charge densities by increasing the effective ?EC and decreasing alloy scattering. Devices based on this structure exhibited good DC and RF performance. A high peak current</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://hotmetals.ms.northwestern.edu/refs/files/am04_superalloy_foams.pdf"><span id="translatedtitle">Synthesis, structure, and mechanical properties of Ni–<span class="hlt">Al</span> and Ni–Cr–<span class="hlt">Al</span> superalloy foams</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Heeman Choe; David C. Dunand</p> <p>2004-01-01</p> <p>Reticulated nickel foams were alloyed with 8–9 wt% <span class="hlt">Al</span> or 14–18 wt% Cr and 5–9 wt% <span class="hlt">Al</span> in a three-step method consisting of (i) gas-phase deposition of Cr and\\/or <span class="hlt">Al</span> onto the struts of a pure Ni foam by pack-cementation at 1000 °C; (ii) homogenization at 1200 °C to remove concentration gradients and to solutionize the alloyed struts; (iii) aging</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40274889"><span id="translatedtitle">On the properties of the eutectic alloy <span class="hlt">Al</span> 3(Nb,Cr) + Cr(<span class="hlt">Al</span>,Nb)</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>S. A. Souza; P. L. Ferrandini; E. A. Souza; A. O. dos Santos; R. Caram</p> <p>2008-01-01</p> <p>The eutectic alloy <span class="hlt">Al</span>3(Nb,Cr)+Cr(<span class="hlt">Al</span>,Nb) forms an in situ composite and the <span class="hlt">Al</span>3Nb presents high specific strength and low oxidation rate that may be improved by the combination with other phases. The purpose of this work is to investigate physical, mechanical and oxidation properties of the eutectic alloy. Therefore, Rietveld analysis was carried out for furnace cooled and water quenched samples</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_11");'>11</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li class="active"><span>13</span></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_13 --> <div id="page_14" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="261"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/203536"><span id="translatedtitle">Synthesis of <span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span> composites by reactive metal penetration</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Loehman, R.E.; Ewsuk, K. [Sandia National Labs., Albuquerque, NM (United States). Advanced Materials Lab.; Tomsia, A.P. [Pask Research and Engineering, Berkeley, CA (United States)</p> <p>1996-01-01</p> <p>Ceramic-metal composites have been made to near net-shape by reactive penetration of dense ceramic preforms by molten <span class="hlt">Al</span>. Ceramic-metal composite formation by reactive metal penetration is driven by a strongly negative Gibbs energy for reaction. For <span class="hlt">Al</span>, the general form of the reaction is (x + 2)<span class="hlt">Al</span> + (3/y)MO{sub y} {yields} <span class="hlt">Al</span>{sub 2}O{sub 3} + M{sub 3/y}<span class="hlt">Al</span>{sub x}, where MO{sub y} is an oxide that is wet by molten <span class="hlt">Al</span>. In low P{sub O{sub 2}} atmospheres and at temperatures above about 900 C, molten <span class="hlt">Al</span> reduces mullite to produce <span class="hlt">Al</span>{sub 2}O{sub 3} and silicon. The <span class="hlt">Al</span>/mullite reaction has a {Delta}G{degree}{sub r} (1,200 K) of {minus}1,014 kJ/mol and, if the mullite is fully dense, the theoretical volume change on reaction is less than 1%. Experiments with commercial mullite containing a silicate grain boundary phase average less than 2% volume change on reaction. In the <span class="hlt">Al</span>/mullite system, reactive metal penetration produces a fine-grained alumina skeleton with an interspersed metal phase. With enough excess aluminum, mutually interpenetrating ceramic-metal composites are produced. Properties measurements show that ceramic-metal composites produced by reactive metal penetration of mullite by <span class="hlt">Al</span> have a Young`s modulus and hardness similar to that of <span class="hlt">Al</span>{sub 2}O{sub 3}, with improved fracture toughness ranging from5 to 9 MPa {center_dot} m{sup 1/2}. For penetration times less than 1 h, reaction layer thickness varies as the square root of time, which allows ceramic-metal composite coatings to be fabricated by controlling the penetration time.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/919660"><span id="translatedtitle">The Stability of <span class="hlt">Al</span> 11Sm3 (<span class="hlt">Al</span>4Sm) Phases in the <span class="hlt">Al</span>-Sm Binary System</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>S.H.Zhou; R.E. Napolitano</p> <p>2007-06-01</p> <p>The relative stability of <span class="hlt">Al</span>{sub 11}Sm{sub 3} (<span class="hlt">Al</span>{sub 4}Sm) intermetallic phases was experimentally investigated through a series of heat treatments followed by microstructural, microchemical, and X-ray diffraction (XRD) analyses. The principal findings are that the high-temperature tetragonal phase is stable from 1655 to 1333 K and that the low-temperature orthorhombic phases, {alpha} and {gamma}, have no range of full stability but are metastable with respect to the crystalline <span class="hlt">Al</span> and Sm reference states down to 0 K. Thermodynamic modeling is used to describe the relative energetics of stable and metastable phases along with the associated two-phase mixtures. Issues regarding transition energetics and kinetics are discussed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=20020041465&hterms=dissociation+H2&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Ddissociation%2BH2"><span id="translatedtitle">The Dissociation Energies of <span class="hlt">Al</span>H2 and <span class="hlt">Al</span>Ar</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Ricca, Alessandra; Partridge, Harry; Bauschlicher, Charles W., Jr.; Visscher, Luuk; Langhoff, Stephen R. (Technical Monitor)</p> <p>1995-01-01</p> <p>The D(sub 0) values for <span class="hlt">Al</span>H2 and <span class="hlt">Al</span>Ar are computed using the coupled cluster approach in conjunction with large basis sets. Basis set superposition and spin-orbit effects are accounted for as they are sizeable due to the small binding energy. The computed dissociation energy for <span class="hlt">Al</span>Ar is 101 /cm , which is 83% of the experimental value (122.4/ cm). Our best estimate for the H2 binding energy in <span class="hlt">Al</span>H2 is 40 +/- 28 /cm.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2014SRL....2150034M"><span id="translatedtitle">HYDROGEN ADSORPTION ON ?-Ti<span class="hlt">Al</span> (001) AND Ni/Ti<span class="hlt">Al</span> (001) SURFACES</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mubarak, A. A. Karim; Alelaimi, Mahmoud</p> <p>2014-04-01</p> <p>In this paper, we present first principles calculations of the energetic, electronic and magnetic properties of the variant termination of Ti<span class="hlt">Al</span> (001) and Ni/Ti<span class="hlt">Al</span> (001) surfaces with and without hydrogen atoms. The calculations have been performed within the density functional theory using full-potential linearized augmented plane wave method. The generalized gradient approximation (GGA) is utilized as the exchange-correlation energy. The octahedral site is the stable absorption site of H atom in the ?-Ti<span class="hlt">Al</span> system. This absorption reduces the cohesive energy of ?-Ti<span class="hlt">Al</span> system due to increase in the lattice constant. The surface energy for both Ti<span class="hlt">Al</span> (001) terminations is calculated. The stable adsorption site of H atoms on the variant termination of Ti<span class="hlt">Al</span> (001) surface is performed. The adsorption energy of hydrogen on Ti is more energetic than that on <span class="hlt">Al</span>. The adsorption of H atom on both terminations of H/Ni/Ti<span class="hlt">Al</span> (001) is more preferable at the bridge site. The adsorption energies are enhanced on Ni atom due to the contraction between d-Ni bands and Ti<span class="hlt">Al</span> substrate band.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Yang, Mao; Shi, Jun-jie</p> <p>2010-07-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920053767&hterms=chemistry+synthesis&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dchemistry%2Bsynthesis"><span id="translatedtitle">Combustion synthesis of TiB2-<span class="hlt">Al</span>2O3-<span class="hlt">Al</span> composite materials</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Feng, H. J.; Moore, J. J.; Wirth, D. G.</p> <p>1991-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Grishok, Alla</p> <p></p> <p>THE NEXT <span class="hlt">ALS</span> BREAKTHROUGH COULD BE YOURS Prize4Life Awards Prizes for <span class="hlt">ALS</span> Biomarker Challenge to InnoCentive Solvers Extends $1Million Challenge Seeking <span class="hlt">ALS</span> Biomarker WALTHAM, Mass. ­ April 28, 2009 for the Prize4Life <span class="hlt">ALS</span> Biomarker Challenge, which seeks a biomarker for measuring disease progression in <span class="hlt">ALS</span></p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Paris-Sud XI, Université de</p> <p></p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>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>1998-05-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2012-11-13/pdf/2012-27494.pdf"><span id="translatedtitle">77 FR 67689 - Fidelity Aberdeen Street Trust, et <span class="hlt">al</span>.;</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2012-11-13</p> <p>...812-13731] Fidelity Aberdeen Street Trust, et <span class="hlt">al</span>.; Notice of Application November 6...1\\ Colchester Street Trust, et <span class="hlt">al</span>., Investment Company Act Release Nos...amending, Colchester Street Trust, et <span class="hlt">al</span>., Investment Company Act Release...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2009PhRvB..79h5423K"><span id="translatedtitle">Coating of a layer of Au on <span class="hlt">Al</span>13 : The findings of icosahedral <span class="hlt">Al@Al</span>12Au20- and <span class="hlt">Al</span>12Au202- fullerenes using ab initio pseudopotential calculations</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kumar, Vijay</p> <p>2009-02-01</p> <p>We report results of ab initio pseudopotential calculations on the nanocoating of gold on an icosahedral <span class="hlt">Al</span>13 cluster and the findings of icosahedrally symmetric endohedral <span class="hlt">Al@Al</span>12Au20- and empty cage <span class="hlt">Al</span>12Au202- compound fullerenes formed of metal atoms. Twelve <span class="hlt">Al</span> atoms cap the pentagonal faces of a dodecahedral Au20 cage in which each Au atom has three <span class="hlt">Al</span> atoms and three Au atoms as nearest neighbors. Mixing of <span class="hlt">Al</span>13 and Au20 magic clusters leads to a large heat of formation of 0.55 eV/atom and high stability of the <span class="hlt">Al@Al</span>12Au20 compound fullerene. The binding energies of <span class="hlt">Al</span>12Au20 and <span class="hlt">Al@Al</span>12Au20 are 3.017 and 3.007 eV/atom, respectively, which are much larger than 2.457 eV/atom for Au32 fullerene, leading to the possibility of their high abundance.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.uni-regensburg.de/studium/pruefungsordnungen/medien/zusatzausbildung/903daz2.pdf"><span id="translatedtitle">Ordnung fr die Studienbegleitende Ausbildung Deutsch <span class="hlt">als</span> Zweitsprache</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Schubart, Christoph</p> <p></p> <p>Ordnung für die Studienbegleitende Ausbildung Deutsch <span class="hlt">als</span> Zweitsprache an der Universität Literaturwissenschaften der Universität Regensburg bietet die studienbegleitende Ausbildung Deutsch <span class="hlt">als</span> Zweitsprache (im Fachbereichs Deutschs <span class="hlt">als</span> Zweitsprache zu einer Unterrichtstätigkeit in diesem Bereich zu befähigen. (3) 1 Die</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1987MTA....18..393D"><span id="translatedtitle">The nature of the Fe<span class="hlt">Al</span>3 liquid-(FeMn)<span class="hlt">Al</span>6 reaction in the <span class="hlt">Al</span>-Fe-Mn system</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Denholm, W. T.; Esdaile, J. D.; Siviour, N. G.; Wilson, B. W.</p> <p>1987-03-01</p> <p>Crystallization studies using an inverted L pattern of liquid aluminum alloys of compositions just to the right of the ternary point, and the application of a theoretical analysis of the behavior of a hypothetical system, show that the Fe<span class="hlt">Al</span>3-(FeMn)<span class="hlt">Al</span>6-liquid reaction is peritectic close to the ternary point, and that the invariant reaction is eutectic, i.e., L = Fe<span class="hlt">Al</span>3 + (FeMn)<span class="hlt">Al</span>6 + <span class="hlt">Al</span>( C).</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015AIPC.1653b0023B"><span id="translatedtitle">The formation of (<span class="hlt">Al</span>8Fe2Si, <span class="hlt">Al</span>13Fe4) phases from <span class="hlt">Al</span>-Fe-Si system by TE mode</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Boulouma, A.; Drici, A.; Benaldjia, A.; Guerioune, M.; Vrel, D.</p> <p>2015-03-01</p> <p>This work prepared <span class="hlt">Al</span>8Fe2Si, <span class="hlt">Al</span>13Fe4 mixed sample by ball milling and thermal explosion techniques applying <span class="hlt">Al</span>, Fe and Si powders as precursors. Thermal combustion of powder mixes of composition 24, 37 <span class="hlt">Al</span>+ 50, 36 Fe + 25, 27 Si in mass reveals production of several binary and ternary intermetallic phases such: A113Fe4 and <span class="hlt">Al</span>8Fe2Si.. Synthesis conditions were optimized to fabricate these phases having many potential applications.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/41025655"><span id="translatedtitle">New approximant phases in <span class="hlt">Al</span>–Cr–Fe</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>V Demange; J. S Wu; V Brien; F Machizaud; J. M Dubois</p> <p>2000-01-01</p> <p>Recently, new approximant phases were pointed out in the <span class="hlt">Al</span>–Cr–Fe system, namely orthorhombic O-<span class="hlt">Al</span>–Cr–Fe, hexagonal H-<span class="hlt">Al</span>–Cr–Fe and monoclinic M-<span class="hlt">Al</span>–Cr–Fe. In the corresponding analysed samples, the new approximant phases were always coexisting with metallic aluminium. We have studied the <span class="hlt">Al</span>–Cr–Fe system within a broad composition range. In one alloy with composition <span class="hlt">Al</span>81Cr11Fe8, two new crystalline approximants of the decagonal phase were</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/6542417"><span id="translatedtitle">Combustion synthesis of Ti<span class="hlt">Al</span>-matrix composites in the Ti-<span class="hlt">Al</span>-BN system</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mabuchi, H.; Tsuda, H.; Nakayama, Y. (Univ. of Osaka Prefecture, Osaka (Japan). Dept. of Metallurgy and Materials Science)</p> <p>1995-01-15</p> <p>The intermetallic compound Ti<span class="hlt">Al</span> has attracted much attention for its potential use as a structural high-temperature material. However, its use has been limited because of its negligible low-temperature ductility and fracture toughness and low high-temperature strength and creep. To improve these properties, recently this compound has been made as a composite material containing a secondary phase such as boride, carbide, nitride, or oxide. Recently, combustion synthesis or self-propagating, high-temperature synthesis (SHS) using powder compacts has been developed to produce intermetallics or ceramics. It is also possible to form intermetallic-intermetallic, intermetallic-ceramic, or ceramic-ceramic composites from combustion reactions between corresponding elemental constituents. It has the advantage of an in-situ forming technique compared with conventional artificial composite production approaches. In the previous studies using elemental powders, combustion reaction was carried out to form intermetallic-ceramic composites in the Ti-<span class="hlt">Al</span>-C, or Ti-<span class="hlt">Al</span>-N system. The compacts of Ti and <span class="hlt">Al</span> powders with carbon powder or in gaseous nitrogen reacted exothermically, and formed a mixture product which had a fine distribution of the Ti[sub 2]<span class="hlt">Al</span>C or Ti[sub 2]<span class="hlt">Al</span>N particles in the matrix Ti<span class="hlt">Al</span> with a small amount of Ti[sub 3]<span class="hlt">Al</span>. The processing technique, therefore, is of interest as a combustion reaction synthesis to make in-situ intermetallic-based composite materials. In the present work, to investigate the effect of BN addition on the reaction of Ti And <span class="hlt">Al</span> powder mixtures, combustion synthesis of Ti<span class="hlt">Al</span>-matrix composites has been performed for the Ti-<span class="hlt">Al</span>-BN system.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/676870"><span id="translatedtitle">Boron strengthening in Fe<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>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>1998-11-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3639398"><span id="translatedtitle">Stress granules as crucibles of <span class="hlt">ALS</span> pathogenesis</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>King, Oliver D.</p> <p>2013-01-01</p> <p>Amyotrophic lateral sclerosis (<span class="hlt">ALS</span>) is a fatal human neurodegenerative disease affecting primarily motor neurons. Two RNA-binding proteins, TDP-43 and FUS, aggregate in the degenerating motor neurons of <span class="hlt">ALS</span> patients, and mutations in the genes encoding these proteins cause some forms of <span class="hlt">ALS</span>. TDP-43 and FUS and several related RNA-binding proteins harbor aggregation-promoting prion-like domains that allow them to rapidly self-associate. This property is critical for the formation and dynamics of cellular ribonucleoprotein granules, the crucibles of RNA metabolism and homeostasis. Recent work connecting TDP-43 and FUS to stress granules has suggested how this cellular pathway, which involves protein aggregation as part of its normal function, might be coopted during disease pathogenesis. PMID:23629963</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/47771837"><span id="translatedtitle">Customer Perceived Value Accounting <span class="hlt">als</span> zentrale Komponente des Dienstleistungscontrolling</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Friederike Wall; Regina Schröder</p> <p></p> <p>Dienstleistungen besitzen in zweifacher Hinsicht Prozesscharakter: zum einen <span class="hlt">als</span> unternehm erischer Erstellungsprozess, zum\\u000a anderen <span class="hlt">als</span> kundenseitiger Nutzungsprozess der Leistung (Stauss 1995).</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2014APS..MARL34003N"><span id="translatedtitle">Individual two level fluctuators in the tunneling conductance of <span class="hlt">Al/AlOx/Al</span> Josephson junctions for superconducting qubits</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Nugroho, Christopher; Orlyanchik, Vladimir; van Harlingen, Dale</p> <p>2014-03-01</p> <p>Two level system (TLS) defects in <span class="hlt">Al</span>Ox tunnel barriers can lead to low-frequency 1 / f critical current noise and losses in coherent superconducting circuits. Understanding the nature of these defects and how to eliminate them are critical in order to achieve ultra-long coherence times. We present measurements of the tunneling conductance of ultrasmall, A <(100nm) 2 , <span class="hlt">Al/AlOx/Al</span> shadow evaporated junctions. The tunneling conductance of these junctions exhibits several isolated TLSs, which permitted the detailed analysis of the individual switching rates and behavior of the TLSs. We have studied the thermal activation behavior of these TLSs, and in some cases observe a crossover into quantum-limited tunneling at lower temperatures. Tracking the TLS switching rates as a function of the applied voltage bias provides an estimate of the TLS charge dipole moment. In some quantum tunneling limited TLSs we have observed a non-equilibrium enhancement of the switching rates that cannot be explained by simple dissipative heating of the TLSs. Further investigations into these TLS defects may lead to the identification of their physical origins and strategies to eliminate them. Research funded by the Intelligence Advanced Research Projects Activity (IARPA).</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_12");'>12</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li class="active"><span>14</span></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_14 --> <div id="page_15" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="281"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&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> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2011-11-17</p> <p>...OF 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 and Competitive...Montana, Billings Division, in United States et <span class="hlt">al</span>. v. Blue Cross and Blue Shield of...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2012-08-23/pdf/2012-20740.pdf"><span id="translatedtitle">77 FR 51048 - United States et <span class="hlt">al</span>. v. Verizon Communications Inc. et <span class="hlt">al</span>.; Proposed Final Judgment and...</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2012-08-23</p> <p>...DEPARTMENT OF JUSTICE Antitrust Division United States et <span class="hlt">al</span>. v. Verizon Communications Inc. et <span class="hlt">al</span>.; Proposed Final Judgment and Competitive Impact...District of Columbia in United States of America et <span class="hlt">al</span>. v. Verizon Communications Inc. et...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/1624947"><span id="translatedtitle">Cholinergic markers in <span class="hlt">ALS</span> spinal cord.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Berger, M L; Veitl, M; Malessa, S; Sluga, E; Hornykiewicz, O</p> <p>1992-03-01</p> <p>We analyzed binding sites for quinuclidinyl benzilate (QNB) and hemicholinium-3 (HC-3) by quantitative slice autoradiography and the activities of choline acetyltransferase (ChAT) and acetylcholinesterase (AChE) in spinal cord of 5-7 patients with amyotrophic lateral sclerosis (<span class="hlt">ALS</span>). In the ventral horn, QNB binding sites were markedly reduced (38% of controls; P less than 0.001), whereas HC-3 binding sites were only moderately affected (76%, P less than 0.01). Losses in cholinergic marker enzymes were inconsistent. The loss of muscarinic binding sites in the ventral horn was the most reliable cholinergic disease marker in <span class="hlt">ALS</span>. PMID:1624947</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://arxiv.org/pdf/nucl-ex/0608001v1"><span id="translatedtitle">The beta-decay of 22<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>N. L. Achouri; F. de Oliveira Santos; M. Lewitowicz; B. Blank; J. Aysto; G. Canchel; S. Czajkowski; P. Dendooven; A. Emsallem; J. Giovinazzo; N. Guillet; A. Jokinen; A. M. Laird; C. Longour; K. Perajarvi; N. Smirnova; M. Stanoiu; J. C. Thomas</p> <p>2006-08-01</p> <p>In an experiment performed at the LISE3 facility of GANIL, we studied the decay of 22<span class="hlt">Al</span> produced by the fragmentation of a 36Ar primary beam. A beta-decay half-life of 91.1 +- 0.5 ms was measured. The beta-delayed one- and two-proton emission as well as beta-alpha and beta-delayed gamma decays were measured and allowed us to establish a partial decay scheme for this nucleus. New levels were determined in the daughter nucleus 22Mg. The comparison with model calculations strongly favours a spin-parity of 4+ for the ground state of 22<span class="hlt">Al</span>.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://kuscholarworks.ku.edu/handle/1808/5722"><span id="translatedtitle">Nominalization in Q'anjob'<span class="hlt">al</span> (Maya)</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Mateo, Pedro</p> <p>2010-01-01</p> <p>is widespread across the Mayan language family; and that intransitivization must come first before nominalization. In section 4 I present my conclusion. 1. Ergative system in Q’anjob’<span class="hlt">al</span> Inflection is marked on the verb as shown in the template in (2...). Transitive verbs take aspect, absolutive, ergative and status suffix, as in (3)a, while intransitive verbs take aspect, absolutive, and status suffix, as in (3)b. Thre aspects are marked in Q’anjob’<span class="hlt">al</span>: ch- incompletive, max- completive, and hoq- potential...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.inf.u-szeged.hu/~csendes/go.pdf"><span id="translatedtitle">BEVEZETES A GLOB ALIS OPTIMALIZ <span class="hlt">AL</span> ASBA</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Csendes, Tibor</p> <p></p> <p>BEVEZET´ES A GLOB ´ALIS OPTIMALIZ ´<span class="hlt">AL</span> ´ASBA Csendes Tibor Szeged, 2012. #12;Lektor´alta: (M´anos.) #12;Elosz´o A jelen jegyzet1 a Szegedi Tudom´anyegyetemen 2002-tol tartott Bevezet´es a Glob´alis´itett szakir´any r´esze). Ezek felv´etel´enek ide´alis sorrendje: Nemline´aris optimaliz´<span class="hlt">al</span>´as, majd Glob´alis</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015JMoSp.311...49M"><span id="translatedtitle">The semi-experimental equilibrium structures of <span class="hlt">Al</span>CCH and <span class="hlt">Al</span>NC</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mück, Leonie Anna; Thorwirth, Sven; Gauss, Jürgen</p> <p>2015-05-01</p> <p>Based on experimental rotational constants available in the literature (Walker and Gerry, Chem. Phys. Lett. 278, 9 (1997); Walker et <span class="hlt">al</span>., J. Mol. Spectrosc. 209, 178 (2001); Sun et <span class="hlt">al</span>., Chem. Phys. Lett. 553, 11 (2012)) [14,17,19] for five isotopologues of <span class="hlt">Al</span>CCH and three isotopologues of <span class="hlt">Al</span>NC as well as quantum-chemical computations for the vibrational corrections to rotational constants, the semi-experimental structures of these two aluminum compounds are determined. These empirical equilibrium structures (<span class="hlt">Al</span>CCH: re (Alsbnd C) = 1.957 Å, re (Csbnd C) = 1.222 Å, re (Csbnd H) = 1.065 Å; <span class="hlt">Al</span>NC: re (Alsbnd N) = 1.850 Å, re (Nsbnd C) = 1.181 Å) compare favorably with theoretical best-estimate structures obtained using highly accurate coupled-cluster calculations in combination with sophisticated extrapolation and additivity schemes, i.e., the deviations are smaller than 0.002 Å, but significant deviations are noted in comparison with previously determined experimental structures. Good agreement is also reached between calculations and experimental values for the relevant spectroscopic parameters of <span class="hlt">Al</span>CCH and <span class="hlt">Al</span>NC, indicating the predictive power of state-of-the-art high-level quantum-chemical calculations.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=DOE-PATENT-XML&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> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Deevi, Seetharama C. (Midlothian, VA); Sikka, Vinod K. (Oak Ridge, TN)</p> <p>1999-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.csg.is.titech.ac.jp/paper/shiota-pro2013-5.pdf"><span id="translatedtitle">Pregel [Malewicz et <span class="hlt">al</span>.'10] Green-Marl [Hong et <span class="hlt">al</span>.'12</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Chiba, Shigeru</p> <p></p> <p>· : JavaracJava · ­ : ­ : · · ­ 64(40) ­ GC ­ FUJITSU FX10 SPARC64 Ixfx 1.848GHz 16 core, RAM32GB 1. 2 Java 1 #12; · ­ ­ ­ · ­ DSL · Pregel [Malewicz et <span class="hlt">al</span>.'10] · Green-Marl [Hong et <span class="hlt">al</span>.'12] 2 #12; · ­ e.g. · ­ 5 3 7 2 3 #12;Java · ­ ­ 4 #12;` Java · ­ JavaVM ­ C</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Satya Prasad, V. V.; Khaple, Shivkumar; Baligidad, R. G.</p> <p>2014-09-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2009MMTA...40.1541Q"><span id="translatedtitle">Combustion Synthesis Reactions in Cold-Rolled Ni/<span class="hlt">Al</span> and Ti/<span class="hlt">Al</span> Multilayers</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Qiu, Xiaotun; Liu, Ranran; Guo, Shengmin; Graeter, Jesse Harris; Kecskes, Laszlo; Wang, Jiaping</p> <p>2009-07-01</p> <p>In this article, a cold rolling method was developed to fabricate Ni/<span class="hlt">Al</span> and Ti/<span class="hlt">Al</span> multilayer foils, and the combustion synthesis reactions in the cold-rolled foils were investigated. Combustion synthesis reactions were initiated by heating one end of the cold-rolled foil in a flame for several seconds. The Ni/<span class="hlt">Al</span> foils went through three reaction stages. The first reaction stage was a displacement of reaction zone with <span class="hlt">Al</span>3Ni as the reaction product. During the second stage, the part of the foil in the flame underwent thermal explosion. In the last stage, the heat released by thermal explosion triggered a self-propagating high-temperature synthesis (SHS) reaction across the foil that resulted in the formation of <span class="hlt">Al</span>Ni. In contrast, the Ti/<span class="hlt">Al</span> foils experienced only two reaction stages. First, a displacement of the reaction zone propagated across the foil with formation of <span class="hlt">Al</span>3Ti at the Ti/<span class="hlt">Al</span> interface. Then a thermal explosion reaction occurred in the part of foil that was heated in the flame, resulting in many different phases in the reacted foil.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/22150063"><span id="translatedtitle">Synthesis of nanostructured <span class="hlt">Al</span>N by solid state reaction of <span class="hlt">Al</span> and diaminomaleonitrile</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Rounaghi, S.A., E-mail: s.a.rounaghi@gmail.com [Department of Materials Engineering, Ferdowsi University of Mashhad. P.O. Box no. 91775-1111, Mashhad (Iran, Islamic Republic of); IFW Dresden, Institut fuer Komplexe Materialien, Postfach 27 01 16, Dresden D-01171 (Germany); Eshghi, H., E-mail: heshghi@ferdowsi.um.ac.ir [Department of Chemistry, Ferdowsi University of Mashhad. P.O. Box no. 91775-1436, Mashhad (Iran, Islamic Republic of); Kiani Rashid, A.R.; Vahdati Khaki, J. [Department of Materials Engineering, Ferdowsi University of Mashhad. P.O. Box no. 91775-1111, Mashhad (Iran, Islamic Republic of)] [Department of Materials Engineering, Ferdowsi University of Mashhad. P.O. Box no. 91775-1111, Mashhad (Iran, Islamic Republic of); Samadi Khoshkhoo, M.; Scudino, S. [IFW Dresden, Institut fuer Komplexe Materialien, Postfach 27 01 16, Dresden D-01171 (Germany)] [IFW Dresden, Institut fuer Komplexe Materialien, Postfach 27 01 16, Dresden D-01171 (Germany); Eckert, J. [IFW Dresden, Institut fuer Komplexe Materialien, Postfach 27 01 16, Dresden D-01171 (Germany) [IFW Dresden, Institut fuer Komplexe Materialien, Postfach 27 01 16, Dresden D-01171 (Germany); TU Dresden, Institut fuer Werkstoffwissenschaft, Dresden D-01062 (Germany)</p> <p>2013-02-15</p> <p>The solid state reaction of diaminomaleonitrile (DAMN) with aluminum via both mechanochemical and thermal treatment routes was studied by X-ray diffraction and Fourier transform infrared spectroscopy. During the milling process, the reaction starts with the deammoniation of the DAMN molecules, followed by the formation of nanostructured <span class="hlt">Al</span>N powder as the main solid product after milling for 7 h. The reactivity of the mixed powder was also investigated during the conventional thermal treatment process using differential scanning calorimetry, derivative thermogravimetry and thermogravimetric analysis. The results reveal that DAMN starts to polymerize at 192 Degree-Sign C by the elimination of the amine groups. Furthermore, increasing the annealing temperature leads to the formation of a nitrogen-containing carbonaceous material with the structure similar to non-crystalline carbon. However, no evidence for the formation of <span class="hlt">Al</span>N was observed in the annealed samples even at temperatures as high as the <span class="hlt">Al</span> melting point. - Graphical abstract: <span class="hlt">Al</span>N nanoparticles obtained after milling of <span class="hlt">Al</span> and diaminomaleonitrile (DAMN) for 12 h. Highlights: Black-Right-Pointing-Pointer Solid state reaction of diaminomaleonitrile (DAMN) with <span class="hlt">Al</span> was studied via mechanochemical and thermal treatment routs. Black-Right-Pointing-Pointer Nanocrystalline <span class="hlt">Al</span>N was successfully synthesized by the mechanochemical process. Black-Right-Pointing-Pointer The C/N material was formed by polymerization of DAMN during the thermal treatment process. Black-Right-Pointing-Pointer No reaction between DAMN and <span class="hlt">Al</span> was detected during the thermal treatment method.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40681478"><span id="translatedtitle">The origin of <span class="hlt">Al</span>(OH) 3-rich and <span class="hlt">Al</span> 13-aggregate flocs composition in PACl coagulation</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Jr-Lin Lin; Chihpin Huang; Ching-Ju M. Chin; Jill R. Pan</p> <p>2009-01-01</p> <p>The composition of hydrolyzed <span class="hlt">Al</span> species is essential for the understanding of coagulation with <span class="hlt">Al</span>-based coagulants. Surface characteristics of flocs formed by coagulation with two distinct polyaluminum chloride (PACl) coagulants were identified. One commercial coagulant (PACl-C) with voluminous monomeric <span class="hlt">Al</span> and colloidal <span class="hlt">Al</span>(OH)3 and a custom-made PACl (PACl-<span class="hlt">Al</span>13) containing high <span class="hlt">Al</span>13 content were applied to destabilize kaolin particles. The flocs</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zhou, Yang; Lin, Zhaojun; Luan, Chongbiao; Zhao, Jingtao; Yang, Qihao; Yang, Ming; Wang, Yutang; Feng, Zhihong; Lv, Yuanjie</p> <p>2014-09-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19910034051&hterms=stuttgart&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D70%26Ntt%3Dstuttgart"><span id="translatedtitle">1300 K compressive properties of a reaction milled Ni<span class="hlt">Al-Al</span>N composites</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Whittenberger, J. Daniel; Arzt, Eduard; Luton, Michael J.</p> <p>1990-01-01</p> <p>When B2 crystal-structure nickel aluminide is subjected to high-intensity mechanical ball milling in a liquid nitrogen bath, or 'cryomilling', an Ni<span class="hlt">Al</span> composite is obtained which contains about 10 vol pct <span class="hlt">Al</span>N particles. This composition arises from the incorporation of N during cryomilling; during subsequent thermomechanical processing, the N reacts with <span class="hlt">Al</span>. While compressive testing of extruded or isostatically pressed specimens at 1300 K indicated that strength at relatively fast strain rates is slightly dependent on consolidation method, slower strain rates indicate no clear dependency on densification technique: four different consolidation methods were found to yield similar creep strengths. The creep properties of Ni<span class="hlt">Al-Al</span>N are similar to those of the single-crystal Ni-base superalloy NASAIR 100.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2011JAP...109b4502P"><span id="translatedtitle">Aging- and annealing-induced variations in Nb/<span class="hlt">Al-Al</span>Ox/Nb tunnel junction properties</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Pavolotsky, Alexey B.; Dochev, Dimitar; Belitsky, Victor</p> <p>2011-01-01</p> <p>In this paper, we present studies of room temperature aging and annealing of Nb/<span class="hlt">Al-Al</span>Ox/Nb tunnel junctions with the size of 2-3 ?m2. We observed a noticeable drop of junction normal resistance Rn unusually combined with increase in subgap resistance Rj as a result of aging. Variation in both Rn and Rj are subject to the junction size effect. An effect of aging history on the junction degradation after consequent annealing was discovered. Discussion and interpretation of the observed phenomena are presented in terms of structural ordering and reconstruction in the <span class="hlt">Al</span>Ox layer, driven by diffusion flows enhanced due to stress relaxation processes in the <span class="hlt">Al</span> layer interfacing the <span class="hlt">Al</span>Ox layer.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2012NJPh...14f5007L"><span id="translatedtitle">Radiative cooling of <span class="hlt">Al</span>-4 and <span class="hlt">Al</span>-5 in a cryogenic environment</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lange, M.; Froese, M. W.; Menk, S.; Bing, D.; Fellenberger, F.; Grieser, M.; Laux, F.; Orlov, D. A.; Repnow, R.; Sieber, T.; Toker, Y.; von Hahn, R.; Wolf, A.; Blaum, K.</p> <p>2012-06-01</p> <p>We have investigated the radiative cooling of initially hot <span class="hlt">Al</span>-4 and <span class="hlt">Al</span>-5 cluster anions during storage in a cryogenic ion beam trap at an ambient temperature of <15 K. By applying a statistical rate model to the ions' measured delayed detachment rate following excitation with a laser, we have obtained their vibrational temperature as a function of cooling time. The temperature curves for <span class="hlt">Al</span>-4 suggest that the vibrational cooling slows down considerably once the ion reaches approximately room temperature. This suggests the participation of transitions from recently found low-lying electronic states of the anion in the cooling process, prior to reaching approximately room temperature. The experimental results for <span class="hlt">Al</span>-5 suggest slightly slower radiative cooling than for <span class="hlt">Al</span>-4.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/1048747"><span id="translatedtitle">26<span class="hlt">Al</span>+ p elastic and inelastic scattering reactions and galactic abundances of 26<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Pittman, S. T. [University of Tennessee, Knoxville (UTK); Bardayan, Daniel W [ORNL; Chae, K. Y. [University of Tennessee, Knoxville (UTK); Chipps, K. [Colorado School of Mines, Golden; Jones, K. L. [Rutgers University; Kozub, R. L. [Tennessee Technological University; Matei, Catalin [Oak Ridge Associated Universities (ORAU); Matos, M. [Louisiana State University; Moazen, Brian [University of Tennessee, Knoxville (UTK); Nesaraja, Caroline D [ORNL; O'Malley, Patrick [Rutgers University; Pain, Steven D [ORNL; Parker, P.D. [Yale University; Peters, W. A. [Rutgers University; ShrinerJr., J. F. [Tennessee Technological University; Smith, Michael Scott [ORNL</p> <p>2012-01-01</p> <p>Galactic 26<span class="hlt">Al</span> is the first radioactive nucleus to be positively identified by -ray astronomy with detection of the 1.809 MeV ray associated with its decay. This nucleus is destroyed in astrophysical environments in the 26<span class="hlt">Al</span>(p, )27Si and inelastic 26<span class="hlt">Al</span>+p scattering reactions where properties of 27Si levels determine reaction rates. To investigate these properties, elastic and inelastic 26<span class="hlt">Al</span>+p scattering reactions were measured between Ec.m. = 0.5 1.5 MeV at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Laboratory (ORNL). A candidate for a new resonance in the 26<span class="hlt">Al</span>(p, )27Si reaction was identified. Upper limits were also set on the strengths of postulated resonances and on the cross section of the inelastic reaction, but there is little effect on current reaction rate calculations.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2014ApPhL.105x1908H"><span id="translatedtitle">Alloy inhomogeneity and carrier localization in <span class="hlt">Al</span>GaN sections and <span class="hlt">AlGaN/Al</span>N nanodisks in nanowires with 240-350 nm emission</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Himwas, C.; den Hertog, M.; Dang, Le Si; Monroy, E.; Songmuang, R.</p> <p>2014-12-01</p> <p>We present structural and optical studies of <span class="hlt">Al</span>GaN sections and <span class="hlt">AlGaN/Al</span>N nanodisks (NDs) in nanowires grown by plasma-assisted molecular beam epitaxy. The <span class="hlt">Al</span>-Ga intermixing at <span class="hlt">Al</span>(Ga)N/GaN interfaces and the chemical inhomogeneity in <span class="hlt">Al</span>GaN NDs evidenced by scanning transmission electron microscopy are attributed to the strain relaxation process. This interpretation is supported by the three-dimensional strain distribution calculated by minimizing the elastic energy in the structure. The alloy inhomogeneity increases with the <span class="hlt">Al</span> content, leading to enhanced carrier localization signatures in the luminescence characteristics, i.e., red shift of the emission, s-shaped temperature dependence, and linewidth broadening. Despite these effects, the emission energy of <span class="hlt">AlGaN/Al</span>N NDs can be tuned in the 240-350 nm range with internal quantum efficiencies around 30%.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Masoudi, Husain M.</p> <p></p> <p>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> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_13");'>13</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li class="active"><span>15</span></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_15 --> <div id="page_16" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="301"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Grier, David</p> <p></p> <p>(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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Grier, David</p> <p></p> <p>(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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=DOE-PATENT-XML&redirectUrl=http://www.osti.gov/doepatents/biblio/87741"><span id="translatedtitle">Ternary Dy-Er-<span class="hlt">Al</span> magnetic refrigerants</span></a></p> <p><a target="_blank" href="http://www.osti.gov/doepatents">DOEpatents</a></p> <p>Gschneidner, K.A. Jr.; Takeya, Hiroyuki</p> <p>1995-07-25</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://plantbio.berkeley.edu/~bruns/espm131/powerpoints/arbuscular.pdf"><span id="translatedtitle">Schler et <span class="hlt">al</span> 2001 Mycol Arbuscular mycorrhiza</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>California at Berkeley, University of</p> <p></p> <p>vulgaris colonized by arbuscular mycorrhizal fungi vesicle arbuscules (c) D. Redecker 10µm #12;Auxilary. Redecker, K. Wex10µm #12;SEM of arbuscles From Mycorrhizal Symbiosis #12;Devonian Fossil Modern Glomales Remy, Taylor et <span class="hlt">al</span>. 1994 #12;From Gallaud 1905Arum type Paris type #12;AM Hyphae From Mycorrhizal</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/23114496"><span id="translatedtitle">Novel <span class="hlt">Al</span>-based FLP systems.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Uhl, Werner; Würthwein, Ernst-Ulrich</p> <p>2013-01-01</p> <p><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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&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> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>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>2008-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Shamos, Michael I.</p> <p></p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/503734"><span id="translatedtitle">Bierman {ital et <span class="hlt">al</span>.}Reply:</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>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>1997-05-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/5120654"><span id="translatedtitle">High temperature deformation of 6061 <span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kyungtae Park; Lavernia, E.J.; Mohamed, F.A. (Univ. of California, Irvine (United States). Dept. of Mechanical and Aerospace Engineering)</p> <p>1994-03-01</p> <p>The creep behavior of powder metallurgy (PM) 6061 <span class="hlt">Al</span>, which has been used as a metal matrix alloy in the development of discontinuous silicon carbide reinforced aluminum (SiC-<span class="hlt">Al</span>) composites, has been studied over six orders of magnitude of strain rate. The experimental data show that the steady-state stage of the creep curve is of short duration; that the stress dependence of creep rate is high and variable; and that the temperature dependence of creep rate is much higher than that for self-diffusion in aluminum. The above creep characteristics are different from those documented for aluminum based solid-solution alloys but are similar to those reported for discontinuous SiC-<span class="hlt">Al</span> composites and dispersion-strengthened (DS) alloys. Analysis of the experimental data shows that while the high stress dependence of creep rate in 6061 <span class="hlt">Al</span>, like that in DS alloys, can be explained in terms of a threshold stress for creep, the strong temperature dependence of creep rate in the alloy is incompatible with the predictions of available threshold stress models and theoretical treatments proposed for DS alloys.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=ERIC&redirectUrl=http://eric.ed.gov/?q=safety+AND+work&pg=4&id=EJ1019783"><span id="translatedtitle">Hughes et <span class="hlt">al</span>.: Science or Promotion?</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Loman, L. Anthony; Siegel, Gary L.</p> <p>2013-01-01</p> <p>The Hughes et <span class="hlt">al</span>. paper is critiqued generally and in specific areas. The weak nature of the authors' empirical work is discussed along with their enigmatic writing and vague and incorrect use of references, and their simultaneous use of sweeping statements of opinion and narrow analytical focus. This review examines the authors' errors…</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=ERIC&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> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Piovesan, Sandra Dutra; Passerino, Liliana Maria; Medina, Roseclea Duarte</p> <p>2012-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=ERIC&redirectUrl=http://eric.ed.gov/?q=mystic&id=EJ775716"><span id="translatedtitle"><span class="hlt">Al</span>-Ghazali on Moral Education</span></a></p> <p><a target="_blank" href="http://www.eric.ed.gov/ERICWebPortal/search/extended.jsp?_pageLabel=advanced">ERIC Educational Resources Information Center</a></p> <p>Alavi, Hamid Reza</p> <p>2007-01-01</p> <p><span class="hlt">Al</span>-Ghazali (1058-1111 CE) is probably the most influential scholar, philosopher, theologian, legal expert, religious reformer and mystic in the history of Islam. Although he wrote extensively about education, and particularly about moral education, this writing is scattered through a number of different works and has received less scholarly…</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://archives.evergreen.edu/webpages/curricular/2005-2006/fieldecology/field_eco_files/kate_Birdsdraft5_10.24-fischer-Wimp.pdf"><span id="translatedtitle">Halstead et <span class="hlt">al</span>. For: Restoration Ecology1</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p>and native avifauna which may be sensitive to variation in stand7 structure and age. However, little is know associated with the suitability of9 restored habitat for avifauna. We sampled bird communities and aphid et <span class="hlt">al</span>. 2 Keywords: Populus fremontii, riparian restoration, avifauna, galling arthropods,24</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/23490503"><span id="translatedtitle">Oxidation of Volatile Organic Compounds on <span class="hlt">Al</span> 2O 3, Pd\\/<span class="hlt">Al</span> 2O 3, and PdO\\/<span class="hlt">Al</span> 2O 3Catalysts</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Eric M Cordi; John L Falconer</p> <p>1996-01-01</p> <p>Temperature-programmed desorption (TPD) and oxidation (TPO) were used to study the decomposition and oxidation of methanol, ethanol, acetaldehyde, formic acid, and acetic acid on <span class="hlt">Al</span>2O3, Pd\\/<span class="hlt">Al</span>2O3, and PdO\\/<span class="hlt">Al</span>2O3catalysts. The oxidation and decomposition rates were much higher on Pd\\/<span class="hlt">Al</span>2O3than on <span class="hlt">Al</span>2O3, even though the volatile organic compounds (VOCs) were adsorbed on the <span class="hlt">Al</span>2O3support in both cases. The VOCs surface-diffused to Pd</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/11848377"><span id="translatedtitle">Short-period superlattices of <span class="hlt">AlN\\/Al</span>0.08Ga0.92N grown on <span class="hlt">Al</span>N substrates</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>S. A. Nikishin; B. A. Borisov; A. Chandolu; V. V. Kuryatkov; H. Temkin; M. Holtz; E. N. Mokhov; Yu. Makarov; H. Helava</p> <p>2004-01-01</p> <p>High-quality short-period superlattices of <span class="hlt">AlN\\/Al</span>0.08Ga0.92N have been grown by gas-source molecular-beam epitaxy with ammonia on <span class="hlt">Al</span> face of <span class="hlt">Al</span>N (0001) substrates. A significant reduction was achieved in the dislocation density, down to 3×108 cm-2. Complete removal of residual <span class="hlt">Al</span>2O3 surface oxide is needed in order to obtain low dislocation density in homoepitaxy on <span class="hlt">Al</span>N. We show that the presence of</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p>. 1996; Kupferman, Mitra et <span class="hlt">al</span>. 1996; Schwartz, Bergman et <span class="hlt">al</span>. 1996; Bergman, Dunn et <span class="hlt">al</span>. 1995; Latour, Kleinberg et <span class="hlt">al</span>. 1995; Mitra 1995; Mitra and Halperin 1995; Mitra, Latour et <span class="hlt">al</span>. 1995; Svoboda, Mitra et <span class="hlt">al</span>. 1995; Kleinberg, Kenyon et <span class="hlt">al</span>. 1994; Latour, Svoboda et <span class="hlt">al</span>. 1994; Mitra and Halperin 1994; Schwartz</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015JAP...117qE514K"><span id="translatedtitle">High noise suppression using magnetically isotropic (CoFe-<span class="hlt">AlN)/(Al</span>N) multilayer films</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kijima, Hanae; Ohnuma, Shigehiro; Masumoto, Hiroshi; Shimada, Yutaka; Endo, Yasushi; Yamaguchi, Masahiro</p> <p>2015-05-01</p> <p>Magnetically isotropic (CoFe-<span class="hlt">AlN)n/(Al</span>N)n+1 multilayer films, in which the number of CoFe-<span class="hlt">Al</span>N magnetic layers n ranged from 1 to 27, were prepared by radio frequency sputtering to achieve noise suppression at gigahertz frequencies. The soft CoFe-<span class="hlt">Al</span>N magnetic layers consisted of nanometer-sized CoFe ferromagnetic grains embedded in an insulating <span class="hlt">Al</span>N amorphous matrix, while the insulating <span class="hlt">Al</span>N layers comprised <span class="hlt">Al</span>N columnar crystals. All films showed a similar frequency dependence of permeability and ferromagnetic resonance of 1.7 GHz. Noise suppression was evaluated using a microstrip line as a noise source by determining the in-line conductive loss and the near-field intensity picked up by magnetic field detective probes. High noise suppression effects were observed in every direction in the film plane. Maximum noise suppression values amounted to 60% for the in-line conductive loss and -20 dB for the magnetic near-field intensity at around 1.7 GHz in the 27-layer film. These high-frequency noise suppression levels may be attributed to eddy current losses and ferromagnetic resonance.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19790025135&hterms=served+grain+NaCl&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dserved%2Bgrain%2BNaCl"><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> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Smialek, J.; Gibala, R.</p> <p>1979-01-01</p> <p>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> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_14");'>14</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li class="active"><span>16</span></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_16 --> <div id="page_17" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="321"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1992MTA....23...69L"><span id="translatedtitle">Combustion synthesis of Ni3<span class="hlt">Al</span> and Ni3<span class="hlt">Al</span>-matrix composites</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lebrat, J. P.; Varma, A.; Miller, A. E.</p> <p>1992-01-01</p> <p>The self-propagating mode of combustion synthesis (SHS) of Ni3<span class="hlt">Al</span> starting from compacts of stoichiometrically mixed Ni and <span class="hlt">Al</span> powders readily forms fully reacted structures with about 3 to 5 pct porosity, if green density of the compacts is greater than about 75 pct of theoretical. SHS-produced Ni3<span class="hlt">Al</span> matrix composites with up to 2 wt pct A12O3 whiskers also have relatively low porosity levels. Porosity increases rapidly with lower green densities, higher <span class="hlt">Al</span>2O3, or SiC whisker contents, and the degree of reaction completeness diminishes. The SiC whiskers undergo reaction with the matrix, while <span class="hlt">Al</span>2O3 whiskers are nonreactive. All of these observations correlate well with temperature measurements made during the course of the reaction. The SHS mode can be achieved with agglomerated particle size ratio D <span class="hlt">Al</span>/ D Ni ? 1, larger than the limit established from studies of the thermal explosion mode of combustion synthesis D <span class="hlt">Al</span>/ D Ni ? 0.3.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/21175660"><span id="translatedtitle">Electron irradiation of <span class="hlt">Al</span>GaN/GaN and <span class="hlt">Al</span>N/GaN heterojunctions</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Polyakov, A. Y.; Smirnov, N. B.; Govorkov, A. V.; Markov, A. V. [Institute of Rare Metals, Moscow, 119017, B. Tolmachevsky 5 (Russian Federation); Pearton, S. J. [Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States); Dabiran, A. M.; Wowchak, A. M.; Cui, B.; Osinsky, A. V.; Chow, P. P. [SVT Associates, Inc., 7620 Executive Drive, Eden Prairie, Minnesota 55344 (United States); Kolin, N. G.; Boiko, V. M.; Merkurisov, D. I. [Obninsk Branch of Federal State Unitary Enterprise, Karpov Institute of Physical Chemistry, Obninsk, Kaluga Region 249033 (Russian Federation)</p> <p>2008-10-13</p> <p>The effects of 10 MeV electron irradiation on <span class="hlt">Al</span>GaN/GaN and <span class="hlt">Al</span>N/GaN heterojunctions grown by molecular beam epitaxy are reported. The irradiation increases the resistivity of the GaN buffer due to compensation by radiation defects with levels near E{sub c}-1 eV and decreases the mobility of the two-dimensional electron gas (2DEG) near the <span class="hlt">Al</span>GaN/GaN (or <span class="hlt">Al</span>N/GaN) interface. The bulk carrier removal rate in the GaN buffer is the same for both types of structures and similar to carrier removal rates for undoped n-GaN films. In structures with a density of residual donors of {approx}10{sup 15} cm{sup -3}, irradiation with electron doses of {approx}5x10{sup 15} cm{sup -2} renders the buffer semi-insulating. The 50% degradation of the 2DEG conductivity happens at several times higher doses (close to 3x10{sup 16} cm{sup -2} versus 6.5x10{sup 15} cm{sup -2}) for <span class="hlt">Al</span>N/GaN than for <span class="hlt">Al</span>GaN/GaN structures, most likely because of the lower thickness of the <span class="hlt">Al</span>N barrier.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2001JNET...26..125F"><span id="translatedtitle">Thermoelectric Powers of Cells With NaF-<span class="hlt">Al</span>F3-<span class="hlt">Al</span>2O3 Melts</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Flem, Belinda E.; Xu, Qian; Kjelstrup, Signe; Sterten, Åsmund</p> <p>2001-07-01</p> <p>A thermodynamic description of the Peltier heat at the aluminum and the oxygen electrode in the system NaF-<span class="hlt">Al</span>F3-<span class="hlt">Al</span>2O3 is given. The thermoelectric power in melts with molar ratios <italic>n</italic> NaF/<italic>n</italic> <span class="hlt">Al</span>F3 from 3.0 to 1.0, saturated with alumina are measured. Seebeck coefficients for molten fluoride electrolytes saturated with alumina, electrolytes that are relevant for aluminum electrowinning electrolysis cells, are reported. The results allow determinations of Peltier heats of aluminum, oxygen and carbon electrodes in NaF-<span class="hlt">Al</span>F3 electrolytes saturated with alumina. For molar ratios of <italic>n</italic> NaF/<italic>n</italic> <span class="hlt">Al</span>F3 between 2.6 and 1.2, there is a Peltier heating of the aluminum cathode. This heating is in the same order of magnitude as the electrolyte Joule heat, when the current density is 0.7 A cm-2. For molar ratio <italic>n</italic> NaF/<italic>n</italic> <span class="hlt">Al</span>F3 equal to 1.0 the Peltier effect at the aluminum electrode approaches zero. From theoretical considerations we expect a drop also for molar ratio 3.0. For the anode we report a Peltier cooling that is larger than the heat produced by the anodic overvoltage, in melts with NaF/<span class="hlt">Al</span>F3 molar ratio between 2.6 and 1.2 saturated with alumina.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.eawag.ch/forschung/surf/publikationen/2011/2011_mertens.pdf"><span id="translatedtitle">SCIENCE CAREER <span class="hlt">Al</span> nanoclusters in coagulants and granulates: application</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Wehrli, Bernhard</p> <p></p> <p>coagulant or in <span class="hlt">Al</span> granulate during water treatment. Keywords Arsenic Á Water treatment Á <span class="hlt">Al</span> nanoclusters Á properties of aluminum nanoclusters and their efficiency for water treatment, particularly for arsenic (Nilchi et <span class="hlt">al</span>. 2011; Theron et <span class="hlt">al</span>. 2008). Polyaluminum chloride (PACl) is a coagulant widely used in water</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/45479299"><span id="translatedtitle">Observation and Evaluation of <span class="hlt">Al</span> Droplets from Propellant</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Tomoyuki Inamoto; Apollo B. Fukuchi; Shigefumi Miyazaki; Shin Matsuura; Hiroyuki Kawazu</p> <p>2009-01-01</p> <p>We observed <span class="hlt">Al</span> droplets near propellant surface with the CMOS camera, achieved the observation of <span class="hlt">Al</span> droplets near propellant surface through 1MPa to 8MPa and measured the diameter of <span class="hlt">Al</span> droplets near the burning propellant surface. We also observed the propellant section cut by the microtome and measure the size of <span class="hlt">Al</span> droplets in the pockets. We investigated the relationship</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.etsetb.upc.edu/UserFiles/Bases_Premis_%20millors_%20PFC_%202011_2012_15_9_11.pdf"><span id="translatedtitle">PREMIS EMPRESA <span class="hlt">ALS</span> MILLORS PROJECTES FI DE CARRERA I</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Politècnica de Catalunya, Universitat</p> <p></p> <p>'Enginyeria Electrònica; o <span class="hlt">al</span> millor PFM (Tesis de Màster) del Màster MINT. Premi Càtedra Red.es Sistemes de la informació · <span class="hlt">Al</span> millor PFC d'Enginyeria de Telecomunicació o d'Enginyeria Electrònica; o <span class="hlt">al</span> millor PFM (Tesis de d'Enginyeria de Telecomunicació o d'Enginyeria Electrònica; o <span class="hlt">al</span> millor PFM (Tesis de Màster) del</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/59755513"><span id="translatedtitle">Kinetics of the ?-<span class="hlt">Al</span>FeSi to ?-<span class="hlt">Al</span>(FeMn)Si transformation in <span class="hlt">Al</span>-Mg-Si alloys</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>N. C. W. Kuijpers</p> <p>2004-01-01</p> <p>Among all the process steps of the production of aluminium extrusion products, the homogenisation of <span class="hlt">Al</span>-Mg-Si aluminium billets\\u000ais a very important one, since it gives significant changes in the microstructure of the alloy, leading to an improved extrudability\\u000aof the material and improved properties of the final extruded product. During this homogenisation process the aluminium billets\\u000aare annealed in</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015JMMM..387...72M"><span id="translatedtitle">Ferromagnetic ordering in Np<span class="hlt">Al</span>2: Magnetic susceptibility and 27<span class="hlt">Al</span> nuclear magnetic resonance</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Martel, L.; Griveau, J.-C.; Eloirdi, R.; Selfslag, C.; Colineau, E.; Caciuffo, R.</p> <p>2015-08-01</p> <p>We report on the magnetic properties of the neptunium based ferromagnetic compound Np<span class="hlt">Al</span>2. We used magnetization measurements and 27<span class="hlt">Al</span> NMR spectroscopy to access magnetic features related to the paramagnetic and ordered states (TC=56 K). While very precise DC SQUID magnetization measurements confirm ferromagnetic ordering, they show a relatively small hysteresis loop at 5 K reduced with a coercive field HCo~3000 Oe. The variable offset cumulative spectra (VOCS) acquired in the paramagnetic state show a high sensitivity of the 27<span class="hlt">Al</span> nuclei spectral parameters (Knight shifts and line broadening) to the ferromagnetic ordering, even at room temperature.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2011IJTP...50.2790H"><span id="translatedtitle">Revisiting Deng et <span class="hlt">al.'s</span> Multiparty Quantum Secret Sharing Protocol</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Hwang, Tzonelih; Hwang, Cheng-Chieh; Yang, Chun-Wei; Li, Chuan-Ming</p> <p>2011-09-01</p> <p>The multiparty quantum secret sharing protocol [Deng et <span class="hlt">al</span>. in Chin. Phys. Lett. 23: 1084-1087, 2006] is revisited in this study. It is found that the performance of Deng et <span class="hlt">al.'s</span> protocol can be much improved by using the techniques of block-transmission and decoy single photons. As a result, the qubit efficiency is improved 2.4 times and only one classical communication, a public discussion, and two quantum communications between each agent and the secret holder are needed rather than n classical communications, n public discussions, and 3n/2 quantum communications required in the original scheme.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25936096"><span id="translatedtitle">Gate length scaling effect on high-electron mobility transistors devices using <span class="hlt">Al</span>GaN/GaN and <span class="hlt">AlInN/Al</span>N/GaN heterostructures.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Liao, S Y; Lu, C C; Chang, T; Huang, C F; Cheng, C H; Chang, L B</p> <p>2014-08-01</p> <p>Compared to <span class="hlt">Al</span>GaN/GaN HEMT with 0.15 ?m T-gate length, the <span class="hlt">AlInN/Al</span>N/GaN one exhibits much higher current density and transconductance of 1558 mA/mm at Vd = 2 V and 330 mS/mm, respectively. The high extrinsic ft and fmax of 82 GHz and 70 GHz are extracted from <span class="hlt">AlInN/Al</span>N/GaN HEMT. Besides, we find that the transconductance roll-off is significant in <span class="hlt">Al</span>GaN/GaN, but largely improved in <span class="hlt">AlInN/Al</span>N/GaN HEMT, suggesting that the high carrier density and lattice-matched epitaxial heterostructure is important to reach both large RF output power and high operation frequency, especially for an aggressively gate length scaling. PMID:25936096</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&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> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Tamotsu Hashizume; Sanguan Anantathanasarn; Noboru Negoro; Eiichi Sano; Hideki Hasegawa; Kazuhide Kumakura; Toshiki Makimoto</p> <p>2004-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Medraj, Mamoun</p> <p></p> <p>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 mixing model. In the absence of key data for the Mg-Mn system, the calculated thermodynamic properties</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.bio.unc.edu/Faculty/Hurlbert/lab/pubs/Thibault%20et%20al%202011%20suppl%20material.pdf"><span id="translatedtitle">Table S1. Biome classification used in this study and its relationship to Reichenbacher et <span class="hlt">al.'s</span> (1998) classification.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Hurlbert, Allen</p> <p>1998-01-01</p> <p>Table S1. Biome classification used in this study and its relationship to Reichenbacher et <span class="hlt">al.'s</span> (1998) classification. Biomesused in thisstudy Reichenbacher et <span class="hlt">al.'s</span>(1998) biomes Arctic/Taiga Polar (High Arctic) Tundra Arctic/Taiga Alaskan Tundra Arctic/Taiga Canadian (Low Arctic) Tundra Arctic</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Ramamurthy, Uma</p> <p></p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://enpub.fulton.asu.edu/cms/papers/al-alumina.pdf"><span id="translatedtitle">Adhesion, Atomic Structure, and Bonding at the <span class="hlt">Al</span>2O3(0001)/<span class="hlt">Al</span>(111) Interface: A First Principles Study</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Adams, James B</p> <p></p> <p>Adhesion, Atomic Structure, and Bonding at the «­<span class="hlt">Al</span>2O3(0001)/<span class="hlt">Al</span>(111) Interface: A First Principles ), and bond character of the «­<span class="hlt">Al</span>2O3(0001)/<span class="hlt">Al</span>(111) interface. A total of six candidate interface structures, and have determined that a major contribution to bonding across the interface is simi- lar to what is found</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/22311190"><span id="translatedtitle">Local stress-induced effects on <span class="hlt">AlGaAs/Al</span>Ox oxidation front shape</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Chouchane, F.; Almuneau, G., E-mail: almuneau@laas.fr; Arnoult, A.; Lacoste, G.; Fontaine, C. [CNRS, LAAS, 7 avenue du colonel Roche, F-31400 Toulouse (France); Univ de Toulouse, UPS, LAAS, F-31400 Toulouse (France); Cherkashin, N. [Univ de Toulouse, UPS, LAAS, F-31400 Toulouse (France); CNRS, CEMES, 29 Rue Jeanne Marvig, 31055 Toulouse Cedex 4 (France)</p> <p>2014-07-28</p> <p>The lateral oxidation of thick <span class="hlt">Al</span>GaAs layers (>500?nm) is studied. An uncommon shape of the oxide tip is evidenced and attributed to the embedded stress distribution, inherent to the oxidation reaction. Experimental and numerical studies of the internal strain in oxidized <span class="hlt">Al</span>{sub x}Ga{sub 1?x}As/GaAs structures were carried out by dark-field electron holography and finite element methods. A mapping of the strain distribution around the <span class="hlt">Al</span>GaAs/oxide interface demonstrates the main role of internal stress on the shaping of the oxide front. These results demonstrate the high relevance of strain in oxide-confined III-V devices, in particular, with over-500-nm thick <span class="hlt">Al</span>Ox confinement layers.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&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> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p></p> <p>2013-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Elkatsha, Markus Fawzy Fahmy</p> <p>2000-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Voter, A.F.; Chen, Shao Ping</p> <p>1986-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2003JaJAP..42..680W"><span id="translatedtitle">Thermal Desorption Behavior of <span class="hlt">Al</span>F3 Formed on <span class="hlt">Al</span>2O3</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Watanabe, Morimichi; Iida, Takashi; Akiyama, Keijiro; Ishikawa, Takahiro; Sakai, Hiroaki; Sawabe, Kyoichi; Shobatake, Kosuke</p> <p>2003-06-01</p> <p>Thermal desorption behaviors of the <span class="hlt">Al</span>F3 layer formed on <span class="hlt">Al</span>2O3 in the sample temperature range from Ts = 300 to 930 K have been studied using molecular beam mass spectrometry combined with a time-of-flight (TOF) technique. Fluorine atoms were detected as the desorbed species at sample temperatures of Ts = 625 to 850 K and the intensity was found to be peaked at Ts = 750 K. <span class="hlt">Al</span>F2 species whose translational temperature Ttr is approximately 100 K lower than Ts were also detected as desorbed species above Ts = 850 K and the intensity increased exponentially as Ts was raised. Based on these results, the desorption behavior of <span class="hlt">Al</span>F3 species is discussed.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_15");'>15</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li class="active"><span>17</span></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_17 --> <div id="page_18" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="341"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19790025087&hterms=CeO2&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D90%26Ntt%3DCeO2"><span id="translatedtitle">Development of Si<span class="hlt">Al</span>ON materials</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Layden, G. K.</p> <p>1979-01-01</p> <p>Cold pressing and sintering techniques were used to produce ceramic test specimens in which the major phase was either Si3N4 or a solid solution having the beta Si3N4 structure. Additional components were incorporated to promote liquid phase sintering. Glass and/or crystalline phase were consequently retained in boundaries between Si3N4 grains which largely determined the physical properties of the bodies. Systems investigated most extensively included R-Si-<span class="hlt">Al</span>-O-N (R = rare earth element) Zr-Si-<span class="hlt">Al</span>-O-N, Y-Si-Be-O-N, and R1-R2-Si-O-N. Room temperature and 1370 C modulus of ruptured, 1370 C creep, and oxidation behavior are discussed in terms of phase relationships in a parent quinery, and relavent oxide systems.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://arxiv.org/pdf/1501.04880v1"><span id="translatedtitle">Status of the <span class="hlt">Al</span>Cap experiment</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>R. Phillip Litchfield</p> <p>2015-01-20</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://arxiv.org/pdf/1501.04880.pdf"><span id="translatedtitle">Status of the <span class="hlt">Al</span>Cap experiment</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Litchfield, R Phillip</p> <p>2015-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/829978"><span id="translatedtitle">14th Annual <span class="hlt">ALS</span> Users' Association meeting</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Robinson, Art</p> <p>2001-11-29</p> <p>Sponsored by the Users' Executive Committee (UEC) and spread over three days from October 15-17, the fourteen annual <span class="hlt">ALS</span> Users' Association Meeting featured an exceptional program with science as the main theme. While the first day was reserved for the traditional facility and Washington reports and for science highlights, the following two days, devoted to several workshops covering topics from theory to detectors, new experimental facilities, and forefront science, were strong draws. As a result, it should not be surprising that the number of registered attendees jumped to a record level of 352, more than 100 above the typical attendance in recent years. The successful commissioning of the long-awaited superconducting bend magnets, or superbends, in the <span class="hlt">ALS</span> storage-ring lattice just before the meeting opened also helped stimulate interest.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1995AdSpR..15R.123D"><span id="translatedtitle"><span class="hlt">Al</span>-26 imaging details from COMPTEL</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Diehl, R.; Knodlseder, J.; Bennett, K.; Bloemen, H.; Dupraz, C.; Hermsen, W.; Lichti, G. G.; Morris, D.; Oberlack, U.; Ryan, J.</p> <p>1995-05-01</p> <p>The Compton Telescope (COMPTEL) map of 1.809 MeV emission from Galactic <span class="hlt">Al</span>-26 is now based on 2 1/2 years of data. Different imaging analysis approaches are discussed: Likelihood maps from point source scans are utilized for searches of emission regions; astrophysical source models are fitted to the measurement with the maximum likelihood method; deconvolved images are produced with the maximum entropy algorithm. Simulations and statistical analysis with the bootstrap method demonstrate that the intensity irregularity and asymmetry along the Galactic plane is significant, although weaker individual features are insignificant by themselves. The comparison of classical <span class="hlt">Al</span>-26 source tracer distributions shows that none of these models represents the COMPTEL data well. The measured 1.809 MeV feature from the Vela region, positionally consistent with the Vela supernova remnant, shows an indication for extended emission.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/792924"><span id="translatedtitle">Berkeley Lab's <span class="hlt">ALS</span> generates Femtosecond Synchrotron Radiation</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Robinson, Arthur L.</p> <p>2000-05-23</p> <p>A Lawrence Berkeley National Laboratory (Berkeley Lab) team drawing its members from the Materials Sciences Division (MSD), the Center for Beam Physics in the Accelerator and Fusion Research Division, and the Advanced Light Source (<span class="hlt">ALS</span>) has succeeded in generating 300-femtosecond pulses of synchrotron radiation at the <span class="hlt">ALS</span> synchrotron radiation machine. Though this ''proof-of-principle'' experiment made use of visible light on a borrowed beamline, the laser ''time-slicing'' technique at the heart of the demonstration will soon be applied in a new bend-magnet beamline designed explicitly for the production of femtosecond pulses of X-rays to study long-range and local order in condensed matter with ultrafast time resolution. An undulator beamline based on the same technique has been proposed that will dramatically increase the flux and brightness.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/10183135"><span id="translatedtitle">Impedance measurements of components for the <span class="hlt">ALS</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Corlett, J.N.; Rimmer, R.A.</p> <p>1993-05-01</p> <p>The high current and short bunch length of the <span class="hlt">ALS</span> beam make the machine susceptible to beam instabilities over a frequency range extending to 13 GHz and beyond. All components of the storage ring have been carefully designed to minimize the impedance presented to the beam, and assemblies have been laid out to avoid resonant enclosures between components. Novel bellows shields allowing considerable mechanical movement while maintaining a low impedance are described. Results are presented of impedance measurements of <span class="hlt">ALS</span> components and assemblies of components, using a precision coaxial wire technique in frequency domain, extending to frequencies beyond cut-off. All measurements were performed at the Lambertson Beam Electrodynamics Laboratory of the Center for Beam Physics at LBL.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/10179984"><span id="translatedtitle">Measurements of collective effects in the <span class="hlt">ALS</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Byrd, J.M.; Corlett, J.N.</p> <p>1994-06-01</p> <p>The Advanced Light Source (<span class="hlt">ALS</span>) is a newly commissioned 1.5 GeV third generation synchrotron radiation facility. We present a summary of measurements single and multibunch collective effects in the <span class="hlt">ALS</span> storage ring and correlations with the expected impedance. Longitudinal and transverse coupled-bunch (CB) oscillations are characterized using measurements of beam spectrum, transverse beam size in dispersive regions, and undulator spectral width. Single bunch transverse head-tail damping rate and frequency shift are used to develop a model of the transverse broadband impedance. To date, storage ring performance is limited by longitudinal coupled-bunch oscillations No deleterious single-bunch effects up to 20 mA have been observed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/7291761"><span id="translatedtitle">Theoretical and experimental analysis of <span class="hlt">Al</span>2O3/<span class="hlt">Al</span>-Si composites processed from <span class="hlt">Al</span>-Si-Zn and <span class="hlt">Al</span>-Si-Mg by direct metal oxidation</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Khatri, S.C.; Koczak, M.J.; Chou, Tongshik; Kagawa, Yutaka</p> <p>1992-08-01</p> <p>Directed oxidation is an innovative technique for the production of ceramic/metal composites via the exposure of melts to oxidizing atmospheres at elevated temperatures. The resulting material consists of a 3D-interconnected, interpenetrating network of the oxide and metal-alloy microchannels. Experimental and theoretical attention is presently given to the case of alumina/<span class="hlt">Al</span>-Si alloy composites of this type, where the Si content of the <span class="hlt">Al</span> alloy varied (2, 5, and 10 wt pct). The composite's growth rates increased with increasing oxygen partial pressure for alloys with lower Si content. The higher growth rates and/or processing times led to higher porosity due to the coalescence of alumina grains. 9 refs.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/54693560"><span id="translatedtitle">Performance of Li<span class="hlt">Al\\/LiI(Al</span>2O3)\\/FeS2 thermal batteries</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Yung-Hsin Lin; Kuo-Tung Yu; Pei-Chin Yao; Shu-En Hsu</p> <p>1986-01-01</p> <p>Performances of the Li<span class="hlt">Al\\/LiI(Al</span>2O3)\\/FeS2 systems with different percentages of <span class="hlt">Al</span>2O3 in the electrolyte were tested from 460 C to 580 C at various current densities and were compared with the performance of the Li<span class="hlt">Al</span>\\/LiCl-KCl\\/FeS2 system. The results of single-cell and battery tests indicate that the Li<span class="hlt">Al\\/LiI(Al</span>2O3)\\/FeS2 system has a feasibility for thermal potential applications. Compared to the Li<span class="hlt">Al</span>\\/LiCl-KCl\\/FeS2 system, the</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1991JPhy3...1.1301A"><span id="translatedtitle">DX centers in <span class="hlt">Al</span>As and GaAs-<span class="hlt">Al</span>As selectively doped superlattices</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Ababou, S.; Marchand, J. J.; Mayet, L.; Guillot, G.; Mollot, F.</p> <p>1991-07-01</p> <p>DX centers have been investigated using deep level transient spectroscopy (DLTS) in Si doped <span class="hlt">Al</span>As and in selectively doped GaAs-<span class="hlt">Al</span>As superlattices (SLs) grown by molecular beam epitaxy. The activation energy for thermal emission is E_a = 0.42 eV in both the SLs and <span class="hlt">Al</span>As layers. For the first time a study of the capture in a SL reveals a capture activation energy E_cap = 0.36 cV, which locates the DX at E_t? 60 meV below the conduction miniband. Taking into account the measured energies and trap concentrations, we show that the DX observed in the SLs lies in the <span class="hlt">Al</span>As layers. Des mesures de spectroscopie capacitives effectuées sur <span class="hlt">Al</span>As et sur des super-réseaux (SR) GaAs-<span class="hlt">Al</span>As dopés sélectivement et épitaxiés par jets moléculaires montrent que le centre DX a une énergie apparente E_a = 0.42 eV aussi bien dans <span class="hlt">Al</span>As que dans les SR. Pour la première fois, une étude de la capture menée sur un SR nous permet de remonter à l'énergie d'activation de la section efficace de capture qui est dans notre cas de 0.36 eV, ce qui positionne le DX à E_t? 60 meV de la minibande de conduction. La nature et la position de DX sont discutées en tenant compte de l'énergie et de la concentration du DX pour chaque structure, et nous montrons que le DX observé est lié au silicium dans les couches <span class="hlt">Al</span>As.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&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> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Chédru, M.; Vicens, J.; Chermant, J. L.; Mordike, B. L.</p> <p>2001-02-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/43075621"><span id="translatedtitle">Eutectic spacing and faults of directionally solidified <span class="hlt">Al–Al</span> 3Ni eutectic</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Y. X. Zhuang; X. M. Zhang; L. H. Zhu; Z. Q. Hu</p> <p>2001-01-01</p> <p>The <span class="hlt">Al–Al</span>3Ni eutectic was directionally solidified at a thermal gradient of 4.5K\\/mm in a vacuum Bridgman-type furnace in order to study eutectic spacing selection criterion. The microstructure was examined in transverse and longitudinal sections and the interrod spacings were measured at different growth velocity. It has been shown that the interrod spacing is not unique and displays a limited range</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/46501875"><span id="translatedtitle">The aging response of <span class="hlt">Al</span>-Cu and <span class="hlt">Al</span>-Cu-Mg directionally solidified eutectics</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>C. G. Rhodes; G. Garmong</p> <p>1972-01-01</p> <p>The microstructure and mechanical properties of directionally solidified <span class="hlt">Al</span>-Cu eutectic and the microstructure of directionally\\u000a solidified <span class="hlt">Al</span>-Cu-Mg eutectic alloys have been studied in as-grown, quenched, and aged conditions. In both systems the microstructure\\u000a of the aluminum-rich ? phase responded to aging treatments in a manner like that of dilute alloys of comparable composition.\\u000a The cooling rate of the alloys from</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/42744814"><span id="translatedtitle">New superlattice ordering in <span class="hlt">Al</span>–Pd–Mn and <span class="hlt">Al</span>–Pd–Mn–Si icosahedral quasicrystals</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>T. Ishimasa; M. Mori</p> <p>1992-01-01</p> <p><span class="hlt">Al</span>–Pd–Mn–Si alloys with nominal compositions (<span class="hlt">Al</span>PdMn) Si and 0 ? x ?; 0.03 were annealed at various temperatures between 1075 and 779 K. The existence of the following five structures has been recognized in these alloys by electron microscopy observations: traditional F–type icosahedral phase, an F–type icosahedral phase with a new superlattice ordering, a third F–type icosahedral phase with a</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40067366"><span id="translatedtitle">Defect Band Characteristics in Mg-<span class="hlt">Al</span> and <span class="hlt">Al</span>-Si High-Pressure Die Castings</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>C. M. Gourlay; H. I. Laukli; A. K. Dahle</p> <p>2007-01-01</p> <p>Bands of positive macrosegregation and porosity commonly follow the surface contour of components produced by high-pressure\\u000a die casting (HPDC). In this article, <span class="hlt">Al</span> alloy <span class="hlt">Al</span>Si7Mg and Mg alloys AZ91 and AM60 were cast into tensile test bars using cold-chamber\\u000a (cc) HPDC. Microstructural characterization revealed that externally solidified crystals (ESCs) are not necessary for defect\\u000a band formation, and that defect bands</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&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> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Won-Pil Baek; Hong-Chae Kim; Soon Heung Chang</p> <p>1997-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.springerlink.com/index/k27182461h21555r.pdf"><span id="translatedtitle"><span class="hlt">Al</span>2O3-5 wt% <span class="hlt">Al</span> composites by ICP sintering of synthesized precursor</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>S. N. Sinha; S. H. Kim</p> <p>1994-01-01</p> <p>Microstructure developments during the milling of <span class="hlt">Al</span>2O3-5wt% <span class="hlt">Al</span> composite powder in an attritor and subsequent sintering of the precursor by inductively coupled argon plasma are presented. After 4 h of milling the precursor contained tubular ceramic-metal and uniform ceramic regions. With an increase in the milling period the ceramic-metal regions broke into smaller and almost globular regions, and the smaller</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://arc.nucapt.northwestern.edu/refbase/files/225_AFF_23.pdf"><span id="translatedtitle">Diffraction Measurements of Load Transfer in Interpenetrating-Phase <span class="hlt">Al</span> O \\/<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>M. L. Young; J. D. Almer; U. Lienert; D. R. Haeffner; R. Rao; J. A. Lewis; D. C. Dunand</p> <p></p> <p>Interpenetrating <span class="hlt">Al</span> O \\/<span class="hlt">Al</span> composites were created by liquid metal infiltration of alumina structures with three-dimensional periodicity produced by a robotic deposition method. Volume-averaged lattice strains in the alumina phase were measured by synchrotron X-ray diffraction at various uniaxial compression stresses up to 200 MPa. Load transfer was observed to occur from the aluminum to the alumina phase, and the</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.springerlink.com/index/h4m07768n1681223.pdf"><span id="translatedtitle">Frauenrechte <span class="hlt">als</span> Kriegslegitimation in den Medien</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Elisabeth Klaus; Susanne Kassel</p> <p></p> <p><span class="hlt">Als</span> wir im Jahr 2001 begannen, uns intensiv mit dem Verhältnis von Medien, Krieg und Geschlecht zu beschäftigen, waren der\\u000a Krieg in Afghanistan und damit die afghanischen Frauen, unter Burkas vor den Augen der Öffentlichkeit verborgen, in allen\\u000a Medien präsent. Der Geschlechterdualismus hat in Kriegszeiten immer eine Rolle gespielt. Während die aktive Rolle der Kriegsherren\\u000a und Soldaten den Männern zugeschrieben</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_16");'>16</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li class="active"><span>18</span></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_18 --> <div id="page_19" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="361"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/47623797"><span id="translatedtitle">Gesundheit <span class="hlt">als</span> Sehnsucht — Religiöse Aspekte des Gesundheitsbegriffs</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Matthias Stiehler</p> <p>2001-01-01</p> <p>Zusammenfassung  Religiöse Aspekte des Gesundheitsbegriffs spielen innerhalb der Gesundheitswis-senschaft nur eine untergeordnete Rolle, obwohl\\u000a Sinn- und Wertefragen unser Ver-stdndnis von Gesundheit bis heute beeinflussen. Diese Fragen sind dabei weniger im Alltag\\u000a <span class="hlt">als</span> mehr in Krisensituationen verortet, die das selbstverständlich Gege-bene aufheben. Eine Analyse des biblischen Befundes\\u000a eröffnet vier Themenfür eine Ausweitung des Gesundheitsbegriffs unter religiösen Gesichtspunkten, die in dieser Arbeit begin-nend</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Genz, Henning</p> <p></p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/175317"><span id="translatedtitle">Microplastic flow in SIC/<span class="hlt">AL</span> composites</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Shi, N. [Los Alamos National Lab., NM (United States); Arsenault, R.J. [Univ. of Maryland, College Park, MD (United States)</p> <p>1995-12-31</p> <p>Experimentally it has been determined that if a composite containing a reinforcement which has a different (in general lower) thermal coefficient of expansion as compared to the matrix, then upon cooling from the processing or annealing temperature, plastic relaxation of the misfit strain will occur. Also, experimentally it has been shown that as the size of the reinforcement is increased, i.e., from small spheres to large spheres, there is a decrease in the summation of the effective plastic strain in the matrix. In other words there is a decrease in the average dislocation density in the matrix. However, if the shape of the reinforcement is changed from spherical to short fiber to continuous filament, then the dislocation density increases. This experimental data is obtained at a constant volume fraction. A very simple model of plastic relaxation based on prismatic punching of dislocations from the interface can account for the decrease in the dislocation density with an increase reinforcement size, and the increase in dislocation density when changing the shape from a sphere to a continuous filament. A FEM analysis of the shape factor is also capable of predicting the correct trend. However, at present the continuum mechanics methods that have been investigated can not predict the size dependence. A simple model to explain the size effect in <span class="hlt">Al</span>{sub 2}O{sub 3}/Ni<span class="hlt">Al</span> composites based on the deformation characteristics of Ni<span class="hlt">Al</span> will be discussed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>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>2013-12-16</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/23109893"><span id="translatedtitle">Room Temperature Radiolytic Synthesized Cu@Cu<span class="hlt">Al</span>O(2)-<span class="hlt">Al</span>(2)O(3) Nanoparticles.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Abedini, Alam; Saion, Elias; Larki, Farhad; Zakaria, Azmi; Noroozi, Monir; Soltani, Nayereh</p> <p>2012-01-01</p> <p>Colloidal Cu@Cu<span class="hlt">Al</span>O(2)-<span class="hlt">Al</span>(2)O(3) 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 (60)Co gamma source chamber with different doses up to 120 kGy. The formation of Cu@Cu<span class="hlt">Al</span>O(2)-<span class="hlt">Al</span>(2)O(3) 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>O(2)-<span class="hlt">Al</span>(2)O(3) 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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2011APS..SHK.Q2004Z"><span id="translatedtitle">Air Blast Characteristics for Laminate <span class="hlt">Al</span> and <span class="hlt">Al</span>-Ni Composites</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zhang, Fan</p> <p>2011-06-01</p> <p>Air blast characteristics of laminate <span class="hlt">Al</span> and <span class="hlt">Al</span>-Ni composites were investigated in a 23 m3 closed chamber. 50 to 100 ?m thick <span class="hlt">Al</span>-Ni or <span class="hlt">Al</span> foils were rolled to form a cylindrical shell, which was then compacted to a density larger than 99% TMD through an explosive formation technique. Charges were prepared using 2 kg C4 explosive packed in the laminate metal shell to a metal-explosive mass ratio of 1.75. Pressure and temperature were measured through transducers on the chamber wall and pyrometry sensors facing the charge center. The pressure history showed a double-shock front structure with an accelerating precursor shock of high amplitude followed by the primary blast, suggesting considerable early-time reaction of small laminate fragments. Significant enhanced explosion pressure (QSP) was observed as compared with baseline charges in solid shell. Recovered residue showed fragments in flakes with a considerable fraction in the molten. The pressure and temperature results are further analyzed to distinguish the reaction properties between the <span class="hlt">Al</span>-Ni (gasless reaction for them alone) and <span class="hlt">Al</span> laminates as well as their effect on air blast. The results are also compared with previous investigations using various shell materials and compositing techniques.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015JMEP...24.1279P"><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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Pereda, B.; Aretxabaleta, Z.; López, B.</p> <p>2015-03-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&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> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Abedini, Alam; Saion, Elias; Larki, Farhad; Zakaria, Azmi; Noroozi, Monir; Soltani, Nayereh</p> <p>2012-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/18298984"><span id="translatedtitle">Self-diffusion on <span class="hlt">Al</span>(1 0 0) and <span class="hlt">Al</span>(1 1 1) surfaces by molecular-dynamics simulation</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>N. I. Papanicolaou; V. C. Papathanakos; D. G. Papageorgiou</p> <p>2001-01-01</p> <p>A semi-empirical many-body interatomic potential for <span class="hlt">Al</span> was obtained in a previous work within the second-moment approximation to the tight-binding model. This was used, in tandem with molecular-dynamics simulations to study the self-diffusion of single adatoms on <span class="hlt">Al</span>(100) and <span class="hlt">Al</span>(111) surfaces. The diffusion coefficient in the case of <span class="hlt">Al\\/Al</span>(100) system was computed. The latter presents Arrhenius behavior. The migration energies</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/60329955"><span id="translatedtitle">Studies of aged OH-<span class="hlt">Al</span> solutions using kinetics of <span class="hlt">Al</span>-ferron reactions and sulfate precipitation</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>P. P. Tsai; P. H. Hsu</p> <p>2009-01-01</p> <p>A series of OH-<span class="hlt">Al</span> solutions (0.02M in <span class="hlt">Al</span>, NaOH\\/<span class="hlt">Al</span> molar ratio = 1, slow neutralization) aged from 10 d to 55 months were all clear and had similar pH values and monomeric <span class="hlt">Al</span> concentrations but reacted differently with sodium sulfate and ferron. The addition of sodium sulfate yielded three kinds of basic aluminum sulfates: tetrahedral crystals of composition Na\\/sub 0.08\\/<span class="hlt">Al</span>(OH)\\/sub</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&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> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>M. Grujicic; S. Batchu</p> <p>2001-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=20070021778&hterms=Binary+alloy+phase+diagrams&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3DBinary%2Balloy%2Bphase%2Bdiagrams"><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> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Copland, Evan</p> <p>2007-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.minsocam.org/msa/ammin/toc/articles_free/1998/rehak_p1266-1276_98.pdf"><span id="translatedtitle">Study of the <span class="hlt">Al</span> coordination in mullites with varying <span class="hlt">Al</span>:Si ratio by 27<span class="hlt">Al</span> NMR spectroscopy and X-ray diffraction</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>P. REHAK; G. KUNATH-FANDREI; P. LOSSO; B. HILDMANN; H. SCHNEIDER; C. JAGER</p> <p>1998-01-01</p> <p>Mullite is an aluminosilicate of the composition <span class="hlt">Al</span>2(<span class="hlt">Al</span>212xSi222x)O102x with x generally ranging between 0.2 and 0.5. XRD and 29 Si and 27 <span class="hlt">Al</span> nuclear magnetic resonance (NMR) have been used to investigate the structure of various mullite compositions ( x 5 0.26, 0.36, 0.42, and 0.69) as well as sillimanite (x 5 0) and g-<span class="hlt">Al</span>2O3 (x 5 1). 27 <span class="hlt">Al</span></p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015JAP...117p3915Z"><span id="translatedtitle">The atomic details of the interfacial interaction between the bottom electrode of <span class="hlt">Al/AlOx/Al</span> Josephson junctions and HF-treated Si substrates</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zeng, L. J.; Krantz, P.; Nik, S.; Delsing, P.; Olsson, E.</p> <p>2015-04-01</p> <p>The interface between the <span class="hlt">Al</span> bottom contact layer and Si substrates in <span class="hlt">Al</span> based Josephson junctions is believed to have a significant effect on the noise observed in <span class="hlt">Al</span> based superconducting devices. We have studied the atomic structure of it by transmission electron microscopy. An amorphous layer with a thickness of ˜5 nm was found between the bottom <span class="hlt">Al</span> electrode and HF-treated Si substrate. It results from intermixing between <span class="hlt">Al</span>, Si, and O. We also studied the chemical bonding states among the different species using energy loss near edge structure. The observations are of importance for the understanding of the origin of decoherence mechanisms in qubits based on these junctions.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/60440808"><span id="translatedtitle">Short-period superlattices of <span class="hlt">AlN\\/Al</span>{sub 0.08}Ga{sub 0.92}N grown on <span class="hlt">Al</span>N substrates</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>S. A. Nikishin; B. A. Borisov; A. Chandolu; V. V. Kuryatkov; H. Temkin; M. Holtz; E. N. Mokhov; Yu. Makarov; H. Helava</p> <p>2004-01-01</p> <p>High-quality short-period superlattices of <span class="hlt">AlN\\/Al</span>{sub 0.08}Ga{sub 0.92}N have been grown by gas-source molecular-beam epitaxy with ammonia on <span class="hlt">Al</span> face of <span class="hlt">Al</span>N (0001) substrates. A significant reduction was achieved in the dislocation density, down to 3x10⁸ cm⁻². Complete removal of residual AlâOâ surface oxide is needed in order to obtain low dislocation density in homoepitaxy on <span class="hlt">Al</span>N. We show that the</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015RuMet2015...51B"><span id="translatedtitle">Effect of the composition of <span class="hlt">Al</span>-Li alloys on the quantitative relation between the ?'(<span class="hlt">Al</span>3Li), S1(<span class="hlt">Al</span>2MgLi), and T1(<span class="hlt">Al</span>2CuLi) phases</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Betsofen, S. Ya.; Antipov, V. V.; Grushin, I. A.; Knyazev, M. I.; Khokhlatova, L. B.; Alekseev, A. A.</p> <p>2015-01-01</p> <p><span class="hlt">Al</span>-Li alloys are considered. A quantitative approach to the determination of the ratio of the fractions of the binary and ternary intermetallic phases in <span class="hlt">Al</span>-Mg(Cu)-Li alloys is developed on the basis of chemical and phase composition balance equations and the experimentally measured lattice parameter of the ? solid solution. The ratio of the fractions of the ?'(<span class="hlt">Al</span>3Li) and S1(T1) phases in <span class="hlt">Al</span>-Mg(Cu)-Li alloys is shown to be determined by the ratio of the mole fractions of Li and Mg(Cu). Equations are proposed for calculating the weight fractions of the S1(<span class="hlt">Al</span>2MgLi), T1(<span class="hlt">Al</span>2CuLi) and ?'(<span class="hlt">Al</span>3Li) phases in domestic and foreign <span class="hlt">Al</span>-Mg-Li alloys 1420, 1424, 5090 and <span class="hlt">Al</span>-Cu-Li alloys 1440, 1460, 1461, 1441, 1469, 2090, 2095, 8090, and Weldalite 049.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19890005862&hterms=platelet+additive&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dplatelet%2Badditive"><span id="translatedtitle">The oxidation of Ni-rich Ni-<span class="hlt">Al</span> intermetallics</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Doychak, Joseph; Smialek, James L.; Barrett, Charles A.</p> <p>1988-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://extension.unh.edu/resources/files/Resource001362_Rep1820.pdf"><span id="translatedtitle">Composting with Worms Worm composting (or <span class="hlt">vermicomposting</span>) is a natural and efficient way to recycle your</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>New Hampshire, University of</p> <p></p> <p>for a layer 2 inches thick. Before putting bedding material into the bin, dampen it with lukewarm water until or combined with garden soil or leaf mold to the bedding will provide microorganisms for the composting to the food layer. Check your bedding at least once a week to make sure it stays damp. Add water if necessary</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/39815443"><span id="translatedtitle">Exploring chemical analysis of <span class="hlt">vermicompost</span> of various oil palm fibre wastes</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Z. Nahrul Hayawin; H. P. S. Abdul Khalil; M. Jawaid; M. Hakimi Ibrahim; A. A. Astimar</p> <p>2010-01-01</p> <p>The aim of this work was to study the physical and chemical properties of different oil palm wastes, viz. empty fruit bunch\\u000a (EFB), oil palm frond (OPF) and oil palm trunk (OPT). A study (84 days duration) was conducted to evaluate the efficiency\\u000a of an exotic earthworm species (epigeic-African Nightcrawler (Eudrilus euginae)) for the decomposition of different types of oil palm</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://expeng.anr.msu.edu/uploads/files/31/Food%20Scrap%20Composting%20and%20Vermicomposting%20Update%20for%2020132.pdf"><span id="translatedtitle">Food Scrap <span class="hlt">Vermicomposting</span> and Composting Update John Biernbaum and Brooke Comer, Department of Horticulture</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p>and outdoor compost medium growing beds and a rain garden were added. Presentation Outline: (Ambitious ­ can; composts c. rain water garden ­ improving water absorption d. soil analysis results ­ after 18 months</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_17");'>17</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li class="active"><span>19</span></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_19 --> <div id="page_20" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="381"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/514668"><span id="translatedtitle">Alignment of the Ti<span class="hlt">Al</span>/Ti{sub 3}<span class="hlt">Al</span> lamellar microstructure in Ti<span class="hlt">Al</span> alloys by growth from a seed material</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Johnson, D.R.; Masuda, Y.; Inui, H.; Yamaguchi, M. [Kyoto Univ. (Japan). Dept. of Materials Science and Engineering] [Kyoto Univ. (Japan). Dept. of Materials Science and Engineering</p> <p>1997-06-01</p> <p>By using an appropriately oriented seed from the Ti<span class="hlt">Al</span>-Si system, the Ti<span class="hlt">Al</span>/Ti{sub 3}<span class="hlt">Al</span> lamellar microstructure was aligned parallel to the growth direction in a number of directionally solidified Ti<span class="hlt">Al</span>-based alloys. The seed composition was kept constant at Ti-43<span class="hlt">Al</span>-3Si (at.%) and the composition of the master ingots was varied for alloys in the Ti<span class="hlt">Al</span>-Si, Ti<span class="hlt">Al</span>-Nb-Si, and Ti-<span class="hlt">Al</span> systems. The lamellar microstructure could be aligned for alloys containing up to approximately 47 at.% (<span class="hlt">Al</span> + Si) in each of these systems. For the composition of seed material, Ti-43<span class="hlt">Al</span>-3Si, where alpha is the primary solidification phase, the original orientation of the lamellar microstructure was maintained after heating to and cooling from the single-phase alpha region making seeding of the alpha phase possible. When this silicon containing seed was used, the nucleation of the primary beta phase in master alloys of Ti-(47 {minus} x)<span class="hlt">Al</span>-xSi(x = 0 to 1 at.%) could be suppressed resulting in the nucleation and growth of only the alpha phase with an orientation determined by the seed crystal. After steady state conditions were reached, single PST crystals with an aligned lamellar microstructure could be grown at growth rates as high as 40 mm/h.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/1048512"><span id="translatedtitle"><span class="hlt">Al</span>-Ca and <span class="hlt">Al</span>-Fe metal-metal composite strength, conductivity, and microstructure relationships</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kim, Hyong June</p> <p>2011-12-01</p> <p>Deformation processed metal-metal composites (DMMC’s) are composites formed by mechanical working (i.e., rolling, swaging, or wire drawing) of two-phase, ductile metal mixtures. Since both the matrix and reinforcing phase are ductile metals, the composites can be heavily deformed to reduce the thickness and spacing of the two phases. Recent studies have shown that heavily drawn DMMCs can achieve anomalously high strength and outstanding combinations of strength and conductivity. In this study, <span class="hlt">Al</span>-Fe wire composite with 0.07, 0.1, and 0.2 volume fractions of Fe filaments and <span class="hlt">Al</span>-Ca wire composite with 0.03, 0.06, and 0.09 volume fractions of Ca filaments were produced in situ, and their mechanical properties were measured as a function of deformation true strain. The <span class="hlt">Al</span>-Fe composites displayed limited deformation of the Fe phase even at high true strains, resulting in little strengthening effect in those composites. <span class="hlt">Al</span>-9vol%Ca wire was deformed to a deformation true strain of 13.76. The resulting Ca second-phase filaments were deformed to thicknesses on the order of one micrometer. The ultimate tensile strength increased exponentially with increasing deformation true strain, reaching a value of 197 MPa at a true strain of 13.76. This value is 2.5 times higher than the value predicted by the rule of mixtures. A quantitative relationship between UTS and deformation true strain was determined. X-ray diffraction data on transformation of <span class="hlt">Al</span> + Ca microstructures to <span class="hlt">Al</span> + various <span class="hlt">Al</span>-Ca intermetallic compounds were obtained at the Advanced Photon Source at Argonne National Laboratory. Electrical conductivity was measured over a range of true strains and post-deformation heat treatment schedules.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/45544544"><span id="translatedtitle">Ti-<span class="hlt">Al</span>-C MAX phases by aluminothermic reduction process</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>A. Hendaoui; D. Vrel; A. Amara; A. Benaldjia; P. Langlois</p> <p>2008-01-01</p> <p>A new approach to synthesis of Ti2<span class="hlt">Al</span>C-Ti3<span class="hlt">Al</span>C2\\/<span class="hlt">Al</span>2O3 compounds is developed based on thermite reaction in the TiO2-<span class="hlt">Al</span>-C system. The effect of <span class="hlt">Al</span> excess is also discussed. XRD analysis has proved that this parameter can be used to improve\\u000a the product purity, i.e., the amount of TiC in the final product. It has also been shown that, with increasing <span class="hlt">Al</span> excess,</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/22404046"><span id="translatedtitle">Synthesis, crystal structures, and hydrogen-storage properties of Eu(<span class="hlt">Al</span>H4)2 and Sr(<span class="hlt">Al</span>H4)2 and of their decomposition intermediates, Eu<span class="hlt">Al</span>H5 and Sr<span class="hlt">Al</span>H5.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Pommerin, André; Wosylus, Aron; Felderhoff, Michael; Schüth, Ferdi; Weidenthaler, Claudia</p> <p>2012-04-01</p> <p>Complex Eu(<span class="hlt">Al</span>H(4))(2) and Sr(<span class="hlt">Al</span>H(4))(2) hydrides have been prepared by a mechanochemical metathesis reaction from Na<span class="hlt">Al</span>H(4) and europium or strontium chlorides. The crystal structures were solved from powder X-ray diffraction data in combination with solid-state (27)<span class="hlt">Al</span> NMR spectroscopy. The thermolysis pathway was analyzed in detail, allowing identification of new intermediate Eu<span class="hlt">Al</span>H(5)/Sr<span class="hlt">Al</span>H(5) compounds. Rehydrogenation experiments indicate that the second decomposition step is reversible. PMID:22404046</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/46495898"><span id="translatedtitle">High-rate sputter deposition and heat treatment of thick Nb-<span class="hlt">Al</span>-Ge and Nb-<span class="hlt">Al</span> superconductors</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>S. D. Dahlgren</p> <p>1976-01-01</p> <p>Crystal structures, microstructures and critical temperatures were determined for Nb-<span class="hlt">Al</span>-Ge and Nb-<span class="hlt">Al</span> sputter-deposits in order\\u000a to evaluate their dependence on sputter-deposition conditions, heat treatment procedures and composition. High-rate sputter\\u000a deposition techniques were used to make the deposits at rates up to 1 ?m\\/min. Compositions studied were Nb3(<span class="hlt">Al</span>0.6Ge0.4), Nb3(<span class="hlt">Al</span>0.75Ge0.25), Nb3<span class="hlt">Al</span>, Nb2.52(<span class="hlt">Al</span>0.84)Ge0.16), Nb2.33<span class="hlt">Al</span>, Nb3.07(<span class="hlt">Al</span>0.75Ge0.25), and Nb4.15(<span class="hlt">Al</span>0.71Ge0.29). The investigation indicated it is feasible</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/953776"><span id="translatedtitle">Influence of Reaction with XeF2 on Surface Adhesion of <span class="hlt">Al</span> and <span class="hlt">Al</span>2O3 Surfaces</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Zhang, Tianfu; Park, Jeong Y.; Huang, Wenyu; Somorjai, Gabor A.</p> <p>2008-07-28</p> <p>The change of surface adhesion after fluorination of <span class="hlt">Al</span> and <span class="hlt">Al</span>{sub 2}O{sub 3} surfaces using XeF{sub 2} was investigated with atomic force microscopy. The chemical interaction between XeF{sub 2} and <span class="hlt">Al</span> and <span class="hlt">Al</span>{sub 2}O{sub 3} surfaces was studied by in situ x-ray photoelectron spectroscopy. Fresh <span class="hlt">Al</span> and <span class="hlt">Al</span>{sub 2}O{sub 3} surfaces were obtained by etching top silicon layers of Si/<span class="hlt">Al</span> and Si/<span class="hlt">Al</span>{sub 2}O{sub 3} with XeF{sub 2}. The surface adhesion and chemical composition were measured as a function of time after the exposure to air or annealing (at 200 C under vauum). The correlation between the adhesion force increase and presence of <span class="hlt">Al</span>F{sub 3} on the surface was revealed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1986poso.symp..664L"><span id="translatedtitle">Performance of Li<span class="hlt">Al/LiI(Al</span>2O3)/FeS2 thermal batteries</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lin, Yung-Hsin; Yu, Kuo-Tung; Yao, Pei-Chin; Hsu, Shu-En</p> <p></p> <p>Performances of the Li<span class="hlt">Al/LiI(Al</span>2O3)/FeS2 systems with different percentages of <span class="hlt">Al</span>2O3 in the electrolyte were tested from 460 C to 580 C at various current densities and were compared with the performance of the Li<span class="hlt">Al</span>/LiCl-KCl/FeS2 system. The results of single-cell and battery tests indicate that the Li<span class="hlt">Al/LiI(Al</span>2O3)/FeS2 system has a feasibility for thermal potential applications. Compared to the Li<span class="hlt">Al</span>/LiCl-KCl/FeS2 system, the LiI(<span class="hlt">Al</span>2O3)-based system has poorer specific conductance and lower cell potential, but longer discharge life and greater capacity. A salient feature of the LiI(<span class="hlt">Al</span>2O3)-based system, important for reliability considerations, is its apparent greater flexibility in battery internal heat control.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2011JaJAP..50aAJ02E"><span id="translatedtitle">Fabrication of <span class="hlt">Al/Al</span>3Ti Functionally Graded Materials by Reaction Centrifugal Mixed-Powder Method</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>El-Hadad, Shimaa; Sato, Hisashi; Miura-Fujiwara, Eri; Watanabe, Yoshimi</p> <p>2011-01-01</p> <p>Formation of compositional gradient in <span class="hlt">Al/Al</span>3Ti Functionally graded materials (FGMs) fabricated by the centrifugal method (CM) depends mainly on the centrifugal force and the processing temperature. In this study, a novel centrifugal method, reaction centrifugal mixed-powder method (RCMPM), was proposed to fabricate <span class="hlt">Al/Al</span>3Ti FGMs under fixed centrifugal force (G=80). The effects of RCMPM processing temperature on the formation of <span class="hlt">Al</span>3Ti intermetallics, its morphology and its distribution in the fabricated <span class="hlt">Al/Al</span>3Ti FGMs have been investigated. Fine granular <span class="hlt">Al</span>3Ti were observed at relatively lower processing temperature while the known coarse platelet-like particles of <span class="hlt">Al</span>3Ti could be achieved at higher casting temperatures. Moreover, Ti3<span class="hlt">Al</span> intermetallics compound and unreacted Ti phases are also observed along with <span class="hlt">Al</span>3Ti particles. In addition, distribution of <span class="hlt">Al</span>3Ti intermetallics size and their volume fraction showed a significant change when the <span class="hlt">Al/Al</span>3Ti FGMs processed at different temperatures relative to the liquidus temperature of the master alloy.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2013ApSS..283...87W"><span id="translatedtitle">Characterization of <span class="hlt">Al</span>2O3 coatings oxidized from <span class="hlt">Al</span> with different proportion of seed crystals at a lower temperature</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Wang, Chen; Lin, Yuebin; He, Fei; Luo, Xinyi; Tao, Jie</p> <p>2013-10-01</p> <p><span class="hlt">Al</span> layer with ?-<span class="hlt">Al</span>2O3 seed crystals was prepared on the surface of 316L stainless steel (SS) by a double cathodes discharge technique, in which the mixed targets of pure <span class="hlt">Al</span> doped with different proportions of ?-<span class="hlt">Al</span>2O3 were used. Then, <span class="hlt">Al</span>2O3 coatings were obtained after plasma oxidization at 580 °C. The phase composition, microstructure and morphology of the coatings were studied respectively by means of glancing-angle (1°) X-ray diffractometry (GAXRD) and scanning electron microscopy (SEM). Furthermore, the bonding force and corrosion resistance of the coatings were measured. The results indicated that ?-<span class="hlt">Al</span>2O3 nucleated and grew surrounding the seed crystals as the Volmer-Weber Mode. The <span class="hlt">Al</span>2O3 coating was compact, performing a good corrosion resistance and metallurgical bonding. The inducing effects of ?-<span class="hlt">Al</span>2O3 with different fractions were discussed. ?-<span class="hlt">Al</span>2O3 (5.5 wt.%) was distributed in the <span class="hlt">Al</span> layer when the target possessing 10% ?-<span class="hlt">Al</span>2O3 was used. After plasma oxidation, 65.54 wt.% ?-<span class="hlt">Al</span>2O3 was obtained which was 10.34% more than that obtained by the oxidation of pure <span class="hlt">Al</span> at the same condition. However, the inducing effects became weak with the further increment of content of ?-<span class="hlt">Al</span>2O3 seed crystals.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Komar Varela, C.; Mirandou, M.; Aricó, S.; Balart, S.; Gribaudo, L.</p> <p>2009-12-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Silva, A. R.; Levenhagen, R. S.; Künzel, R.; Leister, N. V.</p> <p>2014-10-01</p> <p><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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/1068161"><span id="translatedtitle">THE THERMAL EXPANSION OF THE DIRECTIONALLY SOLIDIFIED <span class="hlt">Al-CuAl</span>{sub 2} EUTECTIC</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Baker, Dennis F.; Bragg, Robert H.</p> <p>1980-03-01</p> <p>Alloys of <span class="hlt">Al</span>- Cu<span class="hlt">Al</span>{sub 2} eutectic composition were prepared from 99.999% pure materials and directionally solidified in a temperature gradient of about 45°C/cm at different growth rates R. The {lambda}{sup 2}R = constant relation was verified and lamellar spacings of 7.5, 3.5, 2.6, 1.8 and 1.4 ~m were obtained. Dilatometer specimens were machined with axes aligned in the principal lamellae coordinate directions. Thermal expansion was measured by standard dilatometry (Cu standard) using a set point program cycling between room temperature and 500°C . Thermal expansion of the directionally solidified <span class="hlt">Al-CuAl</span>{sub 2} eutectic is greatest in the growth direction (in the plane of the lamellae), least in the transverse direction (orthogonal to the growth direction in the plane of the lamellae) and intermediate in the vertical direction (normal to the lamellae) . The most significant finding of the study is that the thermal expansion increases with decreasing lamellar spacing between limits defined approximately by the thermal expansion of the Cu<span class="hlt">Al</span>{sub 2} phase alone and the predicted thermal expansion of an isotropic elastic model of the composite.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015JAP...117u4904G"><span id="translatedtitle">Simulations of nanoscale Ni/<span class="hlt">Al</span> multilayer foils with intermediate Ni2<span class="hlt">Al</span>3 growth</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Gunduz, I. E.; Onel, S.; Doumanidis, C. C.; Rebholz, C.; Son, S. F.</p> <p>2015-06-01</p> <p>Nanoscale multilayers of binary metallic systems, such as nickel/aluminum, exhibit self-propagating exothermic reactions due to the high formation enthalpy of the intermetallic compounds. Most of the previous modeling approaches on the reactions of this system rely on the use of mass diffusion with a phenomenological derived diffusion coefficient representing single-phase (Ni<span class="hlt">Al</span>) growth, coupled with heat transport. We show that the reaction kinetics, temperatures, and thermal front width can be reproduced more satisfactorily with the sequential growth of Ni2<span class="hlt">Al</span>3 followed by Ni<span class="hlt">Al</span>, utilizing independently obtained interdiffusivities. The computational domain was meshed with a dynamically generated bi-modal grid consisting of fine and coarse zones corresponding to rapid and slower reacting regions to improve computational efficiency. The PDEPE function in MATLAB was used as a basis for an alternating direction scheme. A modified parabolic growth law was employed to model intermetallic growth in the thickness direction. A multiphase enthalpy function was formulated to solve for temperatures after discrete phase growth and transformations at each time step. The results show that the Ni2<span class="hlt">Al</span>3 formation yields a preheating zone to facilitate the slower growth of Ni<span class="hlt">Al</span>. At bilayer thicknesses lower than 12 nm, the intermixing layer induces oscillating thermal fronts, sharply reducing the average velocities.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zhang, Li-Li; Liu, Zhan-Hui; Huang, Xiao-Gu; Li, Qing-Fang; Zhang, Rong; Xie, Zi-Li; Xiu, Xiang-Qian</p> <p>2014-10-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3967201"><span id="translatedtitle">Revisiting the <span class="hlt">Al/Al</span>2O3 Interface: Coherent Interfaces and Misfit Accommodation</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Pilania, Ghanshyam; Thijsse, Barend J.; Hoagland, Richard G.; Lazi?, Ivan; Valone, Steven M.; Liu, Xiang-Yang</p> <p>2014-01-01</p> <p>We study the coherent and semi-coherent <span class="hlt">Al/?-Al</span>2O3 interfaces using molecular dynamics simulations with a mixed, metallic-ionic atomistic model. For the coherent interfaces, both <span class="hlt">Al</span>-terminated and O-terminated nonstoichiometric interfaces have been studied and their relative stability has been established. To understand the misfit accommodation at the semi-coherent interface, a 1-dimensional (1D) misfit dislocation model and a 2-dimensional (2D) dislocation network model have been studied. For the latter case, our analysis reveals an interface dislocation structure with a network of three sets of parallel dislocations, each with pure-edge character, giving rise to a pattern of coherent and stacking-fault-like regions at the interface. Structural relaxation at elevated temperatures leads to a further change of the dislocation pattern, which can be understood in terms of a competition between the stacking fault energy and the dislocation interaction energy at the interface. Our results are expected to serve as an input for the subsequent dislocation dynamics models to understand and predict the macroscopic mechanical behavior of <span class="hlt">Al/?-Al</span>2O3 composite heterostructures. PMID:24670940</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/15369378"><span id="translatedtitle">Infrared spectra of aluminum hydrides in solid hydrogen: <span class="hlt">Al</span>2H4 and <span class="hlt">Al</span>2H6.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Wang, Xuefeng; Andrews, Lester; Tam, Simon; DeRose, Michelle E; Fajardo, Mario E</p> <p>2003-07-30</p> <p>The reaction of laser-ablated <span class="hlt">Al</span> atoms and normal-H(2) during co-deposition at 3.5 K produces <span class="hlt">Al</span>H, <span class="hlt">Al</span>H(2), and <span class="hlt">Al</span>H(3) based on infrared spectra and the results of isotopic substitution (D(2), H(2) + D(2) mixtures, HD). Four new bands are assigned to <span class="hlt">Al</span>(2)H(4) from annealing, photochemistry, and agreement with frequencies calculated using density functional theory. Ultraviolet photolysis markedly increases the yield of <span class="hlt">Al</span>H(3) and seven new absorptions for <span class="hlt">Al</span>(2)H(6) in the infrared spectrum of the solid hydrogen sample. These frequencies include terminal <span class="hlt">Al</span>-H(2) and bridge <span class="hlt">Al-H-Al</span> stretching and <span class="hlt">Al</span>H(2) bending modes, which are accurately predicted by quantum chemical calculations for dibridged <span class="hlt">Al</span>(2)H(6), a molecule isostructural with diborane. Annealing these samples to remove the H(2) matrix decreases the sharp <span class="hlt">Al</span>H(3) and <span class="hlt">Al</span>(2)H(6) absorptions and forms broad 1720 +/- 20 and 720 +/- 20 cm(-1) bands, which are due to solid (<span class="hlt">Al</span>H(3))(n). Complementary experiments with thermal <span class="hlt">Al</span> atoms and para-H(2) at 2.4 K give similar spectra and most product frequencies within 2 cm(-1). Although many volatile binary boron hydride compounds are known, binary aluminum hydride chemistry is limited to the polymeric (<span class="hlt">Al</span>H(3))( solid. Our experimental characterization of the dibridged <span class="hlt">Al</span>(2)H(6) molecule provides an important link between the chemistries of boron and aluminum. PMID:15369378</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&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> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Prasad, S. V.; Rohatgi, P. K.</p> <p>1987-11-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Keller, R.; Nishimura, H.; Biocca, A. [and others</p> <p>1997-05-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40064334"><span id="translatedtitle">Cavitation erosion of Ni<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>A. Akhtar; R. Salvi; V. K. Sikka</p> <p>1999-01-01</p> <p>Vibratory cavitation erosion tests were carried out on as-cast Ni<span class="hlt">Al</span> intermetallic compounds containing 46.5 to 62.1 at pct\\u000a Ni. The erosion rate decreased with increasing nickel content by over two orders of magnitude, from a high of 16.4 to 0.11\\u000a mgh?1. These low erosion rates exhibited by the nickel-rich alloys containing 58 and 62.1 at. pct Ni, the interruptions in</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/5740247"><span id="translatedtitle"><span class="hlt">ALS</span> insertion device block measurement and inspection</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Marks, S.; Carrieri, J.; Cook, C.; Hassenzahl, W.V.; Hoyer, E.; Plate, D.</p> <p>1991-05-01</p> <p>The performance specifications for <span class="hlt">ALS</span> insertion devices require detailed knowledge and strict control of the Nd-Fe-B permanent magnet blocks incorporated in these devices. This paper describes the measurement and inspection apparatus and the procedures designed to qualify and characterize these blocks. A detailed description of a new, automated Helmholtz coil facility for measurement of the three components of magnetic moment is included. Physical block inspection and magnetic moment measurement procedures are described. Together they provide a basis for qualifying blocks and for specifying placement of blocks within an insertion devices' magnetic structures. 1 ref., 4 figs.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_18");'>18</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li class="active"><span>20</span></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_20 --> <div id="page_21" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="401"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/616448"><span id="translatedtitle">The strengthening effect of <span class="hlt">Al</span>{sub 3}Ti in high temperature deformation of <span class="hlt">Al-Al</span>{sub 3}Ti composites</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Wang, S.H.; Kao, P.W. [National Sun Yat-Sen Univ., Kaohsiung (Taiwan, Province of China). Inst. of Materials Science and Engineering] [National Sun Yat-Sen Univ., Kaohsiung (Taiwan, Province of China). Inst. of Materials Science and Engineering</p> <p>1998-05-01</p> <p>A series of <span class="hlt">Al-Al</span>{sub 3}Ti composites with systematic variation of <span class="hlt">Al</span>{sub 3}Ti content were prepared by mechanical alloying. Microstructural observations have indicated that among these composites, the only distinct variable is the <span class="hlt">Al</span>{sub 3}Ti content, while the other microstructural variables are essentially the same. The high temperature (623--773 K) deformation behavior of these composites was found to be similar to that of dispersion-hardened aluminum. By considering the presence of a threshold stress, the plastic flow in these composites can be described by lattice-diffusion controlled dislocation creep in the aluminum matrix with a constant structure. The presence of <span class="hlt">Al</span>{sub 3}Ti particles can increase the creep strength of these alloys significantly. By considering the load-sharing effect of <span class="hlt">Al</span>{sub 3}Ti, an analysis based on continuum mechanics approach has been conducted, which can successfully account for the creep rate of these <span class="hlt">Al-Al</span>{sub 3}Ti composites. The threshold stress for creep in these composites was found to increase with increasing <span class="hlt">Al</span>{sub 3}Ti content, which could be attributed to the load-shearing effect of <span class="hlt">Al</span>{sub 3}Ti particles.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/5528856"><span id="translatedtitle">Compressive strength of directionally solidified Ni<span class="hlt">Al-NiAl</span>Nb intermetallics at 1200 and 1300 K</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Whittenberger, J.D.; Reviere, R.; Noebe, R.D.; Oliver, B.F. (NASA, Lewis Research Center, Cleveland, OH (United States) Tennessee University, Knoxvills (United States))</p> <p>1992-03-01</p> <p>Results are presented from measurements of 1200 K and 1300 K compressive properties of two directionally solidified Ni<span class="hlt">Al-NiAl</span>Nb compositions (in at. pct): Ni-41.75<span class="hlt">Al</span>-16.5Nb (eutectic composition) and Ni-47.5<span class="hlt">Al</span>-8.9Nb-1.3C (<span class="hlt">Al</span>-rich composition). Results showed that the strength of the eutectic was a factor of 2 greater than that of the <span class="hlt">Al</span>-rich composition. However, the analysis of the compressive stress-strain data indicated that the deformation mechanism was the same in both materials. 15 refs.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920045624&hterms=directionally+solidified&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D30%26Ntt%3Ddirectionally%2Bsolidified"><span id="translatedtitle">Compressive strength of directionally solidified Ni<span class="hlt">Al-NiAl</span>Nb intermetallics at 1200 and 1300 K</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Whittenberger, J. D.; Reviere, R.; Noebe, R. D.; Oliver, B. F.</p> <p>1992-01-01</p> <p>Results are presented from measurements of 1200 K and 1300 K compressive properties of two directionally solidified Ni<span class="hlt">Al-NiAl</span>Nb compositions (in at. pct): Ni-41.75<span class="hlt">Al</span>-16.5Nb (eutectic composition) and Ni-47.5<span class="hlt">Al</span>-8.9Nb-1.3C (<span class="hlt">Al</span>-rich composition). Results showed that the strength of the eutectic was a factor of 2 greater than that of the <span class="hlt">Al</span>-rich composition. However, the analysis of the compressive stress-strain data indicated that the deformation mechanism was the same in both materials.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19930041111&hterms=nickel+63&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3Dnickel%2B63"><span id="translatedtitle">Transformation to Ni5<span class="hlt">Al</span>3 in a 63.0 at. pct Ni-<span class="hlt">Al</span> alloy</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Khadkikar, P. S.; Locci, I. E.; Vedula, K.; Michal, G. M.</p> <p>1993-01-01</p> <p>Microstructures of 63 at. pct P/M Ni-<span class="hlt">Al</span> alloys with a composition close to the stoichiometry of the Ni5<span class="hlt">Al</span>3 phase were investigated using homogenized and quenched specimens aged at low temperatures for various times. Results of analyses of XRD data and electron microscopy observations were used for quantitative phase analysis, performed to calculate the (Ni<span class="hlt">Al</span> + Ni5<span class="hlt">Al</span>3)/Ni5<span class="hlt">Al</span>3 phase boundary locations. The measured lattice parameters of Ni5<span class="hlt">Al</span>3 phase formed at 823, 873, and 923 K indicated an increase in tetragonality of the phase with increasing nickel content.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/1110976"><span id="translatedtitle">Energy localization on the <span class="hlt">Al</span> sublattice of Pt3<span class="hlt">Al</span> with L12 order</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Medvedev, Nikolay N [Altay State Technical University, Russia] [Altay State Technical University, Russia; Starostenkov, Mikhail D [Altay State Technical University, Russia] [Altay State Technical University, Russia; Manley, Michael E [ORNL] [ORNL</p> <p>2013-01-01</p> <p>A three-dimensional molecular-dynamics model of with order was developed and found to support the excitation of discrete breathers (DBs) and energy localization on the <span class="hlt">Al</span> sublattice. For an initial lattice temperature of 0 K, large-amplitude DBs polarized along [100] are found to be very weakly damped, retaining most of their initial energy for more than 2000 cycles, while DBs polarized along [111] damped out over ~30 cycles. Because the DBs and their dissipation channels are confined to the <span class="hlt">Al</span> sublattice, long-lived nonequilibrium states with large energy differences between the <span class="hlt">Al</span> and Pt sublattices occur. Since collisions during irradiation more efficiently generate lattice vibrations in light atoms than heavy atoms, such nonequilibrium states may occur and alter the relaxation processes occurring during radiation damage.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19930060673&hterms=milling+process&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dmilling%2Bprocess"><span id="translatedtitle">Investigation of etching techniques for superconductive Nb/<span class="hlt">Al-Al</span>2O3/Nb fabrication processes</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Lichtenberger, A. W.; Lea, D. M.; Lloyd, F. L.</p> <p>1993-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>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>2009-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19780069154&hterms=Constitution&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D40%26Ntt%3DConstitution"><span id="translatedtitle">Reaction diffusion in the NiCr<span class="hlt">Al</span> and CoCr<span class="hlt">Al</span> systems</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Levine, S. R.</p> <p>1978-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/484861"><span id="translatedtitle">Fabrication of <span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span> composites by reactive melt infiltration</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Tai, W.P.; Watari, Takanori; Torikai, Toshio</p> <p>1997-04-01</p> <p>An interpenetrating phase composite (IPC) is a multiphase material in which each phase is topologically interconnected throughout the microstructure. This unique structure provides several mechanical and electrical property advantages to the IPC material against traditional composites with isolated phases. In the present study, near-net-shape <span class="hlt">Al</span>{sub 2}O{sub 3}-<span class="hlt">Al</span> composites containing a small amount of silicon metal were fabricated by infiltrating aluminum into <span class="hlt">Al</span>{sub 2}O{sub 3} particle preforms with the aid of borosilicate glass. This process was conducted under oxygen atmosphere at ambient pressure (1 atm) using a conventional furnace. The growth rate and the mechanical properties of the composites were investigated by changing the processing factors.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://rafiki.tau.ac.il/~rabani/papers/paper90s.pdf"><span id="translatedtitle">Supporting Information Jain et <span class="hlt">al</span>. 10.1073/pnas.1121319109</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Rabani, Eran</p> <p></p> <p>Supporting Information Jain et <span class="hlt">al</span>. 10.1073/pnas.1121319109 SI Materials and Methods Electronic are the unperturbed density-density response functions of systems A and B, respectively. These Jain et <span class="hlt">al</span>. www</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4498448"><span id="translatedtitle">Abrupt Schottky Junctions in <span class="hlt">Al</span>/Ge Nanowire Heterostructures</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p></p> <p>2015-01-01</p> <p>In this Letter we report on the exploration of axial metal/semiconductor (<span class="hlt">Al</span>/Ge) nanowire heterostructures with abrupt interfaces. The formation process is enabled by a thermal induced exchange reaction between the vapor–liquid–solid grown Ge nanowire and <span class="hlt">Al</span> contact pads due to the substantially different diffusion behavior of Ge in <span class="hlt">Al</span> and vice versa. Temperature-dependent I–V measurements revealed the metallic properties of the crystalline <span class="hlt">Al</span> nanowire segments with a maximum current carrying capacity of about 0.8 MA/cm2. Transmission electron microscopy (TEM) characterization has confirmed both the composition and crystalline nature of the pure <span class="hlt">Al</span> nanowire segments. A very sharp interface between the ?111? oriented Ge nanowire and the reacted <span class="hlt">Al</span> part was observed with a Schottky barrier height of 361 meV. To demonstrate the potential of this approach, a monolithic <span class="hlt">Al/Ge/Al</span> heterostructure was used to fabricate a novel impact ionization device. PMID:26052733</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://botany.natur.cuni.cz/algo/soubory/pdf/03-Chlorarachnio_Eugleno.pdf"><span id="translatedtitle">Adl et <span class="hlt">al</span>. 2012 FIG. 1.--Maximum likelihood</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p>for posterior probabilities = 1.0. Hackett et <span class="hlt">al</span>. 2007 SAR #12;(Archibald2009) Hacrobia What are algae?? #12 are shown as thick branches for posterior probabilities = 1.0. Hackett et <span class="hlt">al</span>. 2007 putative single</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://botany.natur.cuni.cz/algo/soubory/pdf/03-Chlorarachnio_Euglenophyta.pdf"><span id="translatedtitle">Adl et <span class="hlt">al</span>. 2012 FIG. 1.--Maximum likelihood</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p></p> <p></p> <p>for posterior probabilities = 1.0. Hackett et <span class="hlt">al</span>. 2007 SAR #12;(Archibald2009) Hacrobia What are algae?? #12 branches for posterior probabilities = 1.0. Hackett et <span class="hlt">al</span>. 2007 putative single enslavement of a green alga</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2013-04-10/pdf/2013-08317.pdf"><span id="translatedtitle">78 FR 21428 - Royce Focus Trust, Inc., et <span class="hlt">al</span>.;</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2013-04-10</p> <p>...30447; File No. 812-14034] Royce Focus Trust, Inc., et <span class="hlt">al</span>.; Notice of Application April 4, 2013. AGENCY: Securities...1\\ Royce Global Trust, Inc., et <span class="hlt">al</span>., Investment Company Act Release Nos. 22665 (May 16,...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/26052733"><span id="translatedtitle">Abrupt Schottky Junctions in <span class="hlt">Al</span>/Ge Nanowire Heterostructures.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Kral, S; Zeiner, C; Stöger-Pollach, M; Bertagnolli, E; den Hertog, M I; Lopez-Haro, M; Robin, E; El Hajraoui, K; Lugstein, A</p> <p>2015-07-01</p> <p>In this Letter we report on the exploration of axial metal/semiconductor (<span class="hlt">Al</span>/Ge) nanowire heterostructures with abrupt interfaces. The formation process is enabled by a thermal induced exchange reaction between the vapor-liquid-solid grown Ge nanowire and <span class="hlt">Al</span> contact pads due to the substantially different diffusion behavior of Ge in <span class="hlt">Al</span> and vice versa. Temperature-dependent I-V measurements revealed the metallic properties of the crystalline <span class="hlt">Al</span> nanowire segments with a maximum current carrying capacity of about 0.8 MA/cm(2). Transmission electron microscopy (TEM) characterization has confirmed both the composition and crystalline nature of the pure <span class="hlt">Al</span> nanowire segments. A very sharp interface between the ?111? oriented Ge nanowire and the reacted <span class="hlt">Al</span> part was observed with a Schottky barrier height of 361 meV. To demonstrate the potential of this approach, a monolithic <span class="hlt">Al/Ge/Al</span> heterostructure was used to fabricate a novel impact ionization device. PMID:26052733</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/16932929"><span id="translatedtitle">Ion-exchange and potentiometric characterization of <span class="hlt">Al</span>-cystine and <span class="hlt">Al</span>-cysteine complexes.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Bohrer, Denise; Polli, Vania Gabbi; Cícero do Nascimento, Paulo; Mendonça, Jean Karlo A; de Carvalho, Leandro Machado; Pomblum, Solange Garcia</p> <p>2006-11-01</p> <p>The interaction between aluminium and cysteine and cystine was evaluated by means of ion-exchange experiments and potentiometry. Ion-exchange experiments included other ligands with affinity for aluminium and two kinds of resins, either a Na+ -form or an <span class="hlt">Al</span>3+ -form exchanger. The ability of the ligands to keep aluminium in solution in the presence of the Na+ exchanger or to withdraw it from the <span class="hlt">Al</span>3+ -form resin was evaluated. Aluminium quantification was carried out by either graphite-furnace or flame atomic absorption spectrometry. Aluminium extraction isotherms were linearised using the Scatchard plot, and stability constants were obtained from the curves' slopes. The experiments showed that the ability of the ligands to withdraw aluminium from the <span class="hlt">Al</span>3+ -form resin increased following the order cysteine < oxalate < citrate = cystine < nitrilotriacetic acid < ethylenediaminetetraacetic acid. Potentiometric titrations, carried out in aqueous solution with constant ionic strength and temperature, showed that the predominant species in solution have a metal-ligand proportion of 1:1 for both amino acids. The main species are <span class="hlt">Al</span>(OH)3L, with log K of 6.2 for cysteine, and <span class="hlt">Al</span>L and <span class="hlt">Al</span>(OH)L, with log K of 10.3 and 1.7, respectively, for cystine. Stability constants obtained from the Scatchard plots showed a linear correlation with the stability constants obtained by potentiometry for cystine and cysteine in this work and those collected from the literature for the other ligands. These results show that cysteine and cystine extract and maintain aluminium in solution, which may explain elevated concentrations of aluminium in parenteral nutrition solutions containing these amino acids. PMID:16932929</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40267512"><span id="translatedtitle">A study of the ternary phase diagrams of <span class="hlt">Al</span>–Co with Cu, Ag and Au</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>S. Mi; B. Grushko; C. Dong; K. Urban</p> <p>2003-01-01</p> <p>Phase equilibria were studied in the <span class="hlt">Al–Al</span>Ag3–<span class="hlt">Al</span>Co system at 670 and 900°C, and in the <span class="hlt">Al–Al</span>2Au–<span class="hlt">Al</span>Co system at 900 and 1000°C. The 900°C isothermal section of <span class="hlt">Al</span>–Cu–Co was specified for <span class="hlt">Al–AlCo–Al</span>Cu. In contrast to <span class="hlt">Al</span>–Cu–Co, no ternary phases were observed in the systems <span class="hlt">Al</span>–Ag–Co and <span class="hlt">Al</span>–Au–Co. The solubility of Ag and Au in M-<span class="hlt">Al</span>13Co4 reaches ?1.5 at.%, and in the</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/758980"><span id="translatedtitle">PIT INITIATION IN <span class="hlt">Al</span>O{sub X}/<span class="hlt">Al</span> THIN FILMS</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>SON,K.A.; BARBOUR,J.C.; MISSERT,N.; WALL,F.D.; COPELAND,R.G.; MARTINEZ,M.A.; MINOR,K.G.; BUCHHEIT,R.G.; ISAACS,H.S.</p> <p>1998-11-01</p> <p>The electrochemical responses of <span class="hlt">Al</span>O{sub x}/<span class="hlt">Al</span> thin films have been investigated as a function of film growth conditions which produce films with different grain orientation, size and morphology. Films with smooth, 150 nm diameter, randomly oriented grains show a higher pitting potential and lower passive current than those films with large grain-boundary grooving from a mixture of smooth micron-sized, (200)-oriented grains and 300--500 nm diameter, (220)-oriented grains. These results suggest that surface roughness from grain-boundary grooving affects the pitting resistance more strongly than does the grain boundary density.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/307973"><span id="translatedtitle">Pit initiation in <span class="hlt">Al</span>O{sub x}/<span class="hlt">Al</span> thin films</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Son, K.A.; Barbour, J.C.; Missert, N.; Wall, F.D.; Copeland, R.G.; Martinez, M.A.; Minor, K.G. [Sandia National Labs., Albuquerque, NM (United States); Buchheit, R.G. [Ohio State Univ., Columbus, OH (United States); Isaacs, H.S. [Brookhaven National Labs., Upton, NY (United States)</p> <p>1998-12-31</p> <p>The electrochemical responses of <span class="hlt">Al</span>O{sub x}/<span class="hlt">Al</span> thin films have been investigated as a function of film growth conditions which produce films with different grain orientation, size and morphology. Films with smooth, 150 nm diameter, randomly oriented grains show a higher pitting potential and lower passive current than those films with large grain-boundary grooving from a mixture of smooth micron-sized, (200)-oriented grains and 300--500 nm diameter, (220)-oriented grains. These results suggest that surface roughness from grain-boundary grooving affects the pitting resistance more strongly than does the grain boundary density.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/878779"><span id="translatedtitle">In<span class="hlt">AlGaAs/Al</span>GaAs Superlattices for Polarized Electron Photocathodes</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mamaev, Yu.A.; Subashiev, A.V.; Yashin, Yu.P.; Gerchikov, L.G.; /St. Petersburg Polytechnic Inst.; Maruyama, T.; Luh, D.-A.; Clendenin, J.E.; /SLAC; Ustinov, V.M.; Zhukov,; /Ioffe Phys. Tech. Inst.</p> <p>2005-08-15</p> <p>Highly efficient emitters of polarized electrons based on the In<span class="hlt">AlGaAs/Al</span>GaAs superlattice give an optimistic prognosis to explorations of such structures as the sources for accelerators. A new set of these SL structures with minimized conduction band offset was designed and recently tested. A new technology of surface protection in MBE growth leads to a significantly reduced heat-cleaning temperature. At these lowered cleaning temperatures, the thermal degradation of the working structure parameters is avoided. As a result a polarization P of up to 91% at corresponding quantum efficiency (QE) of 0.3% was achieved at room temperature.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_19");'>19</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li class="active"><span>21</span></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_21 --> <div id="page_22" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="421"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.physics.wsu.edu/research/high-pressure/1996/alsb%20prb.pdf"><span id="translatedtitle">Hydrogen passivation of Se and Te in <span class="hlt">Al</span>Sb</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>M. D. McCluskey; E. E. Haller; W. Walukiewicz; P. Becla</p> <p>1996-01-01</p> <p>Using infrared absorption spectroscopy we have observed local vibrational modes (LVM's) arising from DX-hydrogen complex in <span class="hlt">Al</span>Sb. Hydrogen was diffused into bulk <span class="hlt">Al</span>Sb:Se and <span class="hlt">Al</span>Sb:Te by annealing in sealed quartz ampoules with either hydrogen gas or methanol (CH3OH). The persistent photoabsorption of the DX-like Se donor is significantly reduced after hydrogenation. In hydrogenated <span class="hlt">Al</span>Sb:Se, we attribute the LVM peaks at</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/52829341"><span id="translatedtitle">Combustion synthesis of HfB2<span class="hlt">Al</span> composites</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>H. C. Yi; J. Y. Guigné; T. C. Woodger; J. J. Moore</p> <p>1998-01-01</p> <p>Combustion synthesis (SHS) of HfB2-<span class="hlt">Al</span> composite materials with a wide range of HfB2-to-<span class="hlt">Al</span> ratios corresponding to either metal (<span class="hlt">Al</span>) or ceramic (HfB2) matrix was carried out with the emphasis on 60 and 70 vol pct <span class="hlt">Al</span>. The effects of composition and green density of pellets on the combustion characteristics were studied. Combustion temperature, wave velocity, and reaction mode all changed</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.springerlink.com/index/034mw4137207k515.pdf"><span id="translatedtitle">Combustion synthesis of HfB 2 <span class="hlt">Al</span> composites</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>H. C. Yi; J. Y. Guigné; T. C. Woodger; J. J. Moore</p> <p>1998-01-01</p> <p>Combustion synthesis (SHS) of HfB2-<span class="hlt">Al</span> composite materials with a wide range of HfB2-to-<span class="hlt">Al</span> ratios corresponding to either metal (<span class="hlt">Al</span>) or ceramic (HfB2) matrix was carried out with the emphasis on 60 and 70 vol pct <span class="hlt">Al</span>. The effects of composition and green density of pellets\\u000a on the combustion characteristics were studied. Combustion temperature, wave velocity, and reaction mode all changed</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://www.springerlink.com/index/m791742m5027mg7q.pdf"><span id="translatedtitle">Thermodynamic properties and ordering in Pd<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>M. Ettenberg; K. L. Komarek; E. Miller</p> <p>1971-01-01</p> <p>The activity of aluminum in the Pd-<span class="hlt">Al</span> system was determined by an isopiestic method from 30 to 80 at. pct <span class="hlt">Al</span> between 1090°\\u000a and 1490°K. It shows a strong negative deviation from ideality, with a decrease in activity of aluminum of four orders of\\u000a magnitude around the stoichiometric composition of Pd<span class="hlt">Al</span>. The defect structure in the CsCl-structure Pd<span class="hlt">Al</span> compound has</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/51145499"><span id="translatedtitle">Solution processed <span class="hlt">Al</span>-doped ZnO nanostructures</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Tim Kemmitt; Rachael Linklater</p> <p>2010-01-01</p> <p>We report the wet-chemical synthesis of <span class="hlt">Al</span>-doped ZnO thin films, powders, and nanorod arrays. Solid state 27 <span class="hlt">Al</span> NMR studies on powder samples confirm the incorporation of the <span class="hlt">Al</span> ions in the tetrahedral Zn sites in the structure. The degree of <span class="hlt">Al</span> incorporation is dependent on the amine type use d in the precursor solution and the heating profile prior</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=4040524"><span id="translatedtitle">Motor neuron death in <span class="hlt">ALS</span> – programmed by astrocytes?</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Pirooznia, Sheila K.; Dawson, Valina L.; Dawson, Ted M.</p> <p>2014-01-01</p> <p>Motor neurons in <span class="hlt">ALS</span> die via cell-autonomous and non-cell autonomous mechanisms. Using adult human astrocytes and motor neurons, Re et <span class="hlt">al</span> (2014) discover that familial and sporadic <span class="hlt">ALS</span> derived human adult astrocytes secrete neurotoxic factors that selectively kill motor neurons through necroptosis, suggesting a new therapeutic avenue. PMID:24607221</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://bionano.physik.tu-muenchen.de/Source/pnas.201215713SI.pdf"><span id="translatedtitle">Supporting Information Bai et <span class="hlt">al</span>. 10.1073/pnas.1215713109</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Dietz, Hendrik</p> <p></p> <p>Supporting Information Bai et <span class="hlt">al</span>. 10.1073/pnas.1215713109 SI Text The frequency-dependent fall(5):1028­1046. Bai et <span class="hlt">al</span>. www.pnas.org/cgi/content/short/1215713109 1 of 8 #12;Fig. S1. caDNAno object design diagram. Scaffold strand path is depicted with black lines, and staple strands are shown as red lines. Bai et <span class="hlt">al</span></p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://arep.med.harvard.edu/pdf/Grad03.pdf"><span id="translatedtitle">Comparative Genomic Discovery of miRNAs Grad et <span class="hlt">al</span>.</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Church, George M.</p> <p></p> <p>Comparative Genomic Discovery of miRNAs Grad et <span class="hlt">al</span>. Computational and Experimental Identification throughout the adult life cycle (Feinbaum and Ambros, 1999; Lee et <span class="hlt">al</span>., 1993; Reinhart et <span class="hlt">al</span>., 2000 sites in the 3 untranslated region (UTR) of their target mRNAs and repressing their translation (Lee et</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.ece.ucsb.edu/uoeg/publications/papers/Jones_07_icoopma.pdf"><span id="translatedtitle">Hybrid Silicon Integration R. Jones et <span class="hlt">al</span>. Hybrid Silicon Integration</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Bowers, John</p> <p></p> <p>Hybrid Silicon Integration R. Jones et <span class="hlt">al</span>. 1 / 23 Hybrid Silicon Integration R. Jones1 , H. D. Park.jones@intel.com #12;Hybrid Silicon Integration R. Jones et <span class="hlt">al</span>. 2 / 23 Hybrid Silicon Integration R. Jones1 , H. D.jones@intel.com Abstract: An overview is presented of the hybrid <span class="hlt">Al</span>GaInAs-silicon platform that enables wafer level</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://envirocancer.cornell.edu/BCEResearch/TeachSpanWEB.pdf"><span id="translatedtitle">Factores Reproductivos Asociados <span class="hlt">al</span> Riesgo de Cncer del Seno</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Danforth, Bryan Nicholas</p> <p></p> <p>funcionamiento normal del seno como <span class="hlt">al</span> riesgo de cáncer del seno. Se sabe que estar en edad avanzada <span class="hlt">al</span> momento edad temprana es un factor protector. · Mientras más joven sea la mujer <span class="hlt">al</span> momento de tener su primer hijo, menor es su riesgo de desarrollar cáncer del seno más tarde en la vida. · El riesgo de</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://physics.gmu.edu/~ymishin/tial.pdf"><span id="translatedtitle">OVERVIEW NO. 136 DIFFUSION IN THE Ti<span class="hlt">Al</span> SYSTEM</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Mishin, Yuri</p> <p></p> <p>provides an overview of current understanding of point defects and diusion mechanisms in Ti3<span class="hlt">Al</span> and Ti creep characteristics, and good oxidation/corrosion resistance [1, 2]. This combination of useful- phase structure consisting of alternating g-Ti<span class="hlt">Al</span> and a2-Ti3<span class="hlt">Al</span> lamellae. The formation and high</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/47754443"><span id="translatedtitle">Cast and aged ?Ni<span class="hlt">Al</span>-??Ni2<span class="hlt">Al</span>Ti-??Ni3<span class="hlt">Al</span>-?-Cr alloys: a microstructural and mechanical properties investigation</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>W. F. Gale; Z. A. M. Abdo</p> <p>1999-01-01</p> <p>Microstructural development and stability in cast Ni-30 at?% <span class="hlt">Al</span>-21 at?% Cr-4 at?% Ti, Ni-28 at?% <span class="hlt">Al</span>-18 at?% Cr-6 at?% Ti and Ni-26 at?% <span class="hlt">Al</span>-19 at?% Cr-8 at?% Ti alloys are examined in this paper. The paper considers the extent to which microstructural control and stability is improved in these alloys, when compared with earlier work by the authors on similar</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/12154822"><span id="translatedtitle">The dependence of the ?-<span class="hlt">Al</span>FeSi to ?-<span class="hlt">Al</span>(FeMn)Si transformation kinetics in <span class="hlt">Al</span>–Mg–Si alloys on the alloying elements</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>N. C. W. Kuijpers; F. J. Vermolen; C. Vuik; P. T. G. Koenis; K. E. Nilsen; S. van der Zwaag</p> <p>2005-01-01</p> <p>An homogenisation process is applied to as cast billets <span class="hlt">Al</span>–Mg–Si alloys in order to improve the extrudability. During this homogenisation, plate-like ?-<span class="hlt">Al</span>FeSi phase transforms to a more rounded ?-<span class="hlt">Al</span>(FeMn)Si phase which are more favourable for the extrusion process. In this paper, the influence of the alloying elements on the rate of the intermetallic ?-to-? transformation is studied. A Finite Element</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40438800"><span id="translatedtitle">Comparison of the cyclic oxidation behavior of ?-Ni<span class="hlt">Al</span>, ?-NiPt<span class="hlt">Al</span> and ?–?? NiPt<span class="hlt">Al</span> coatings on various superalloys</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>J. A. Haynes; B. A. Pint; Y. Zhang; I. G. Wright</p> <p>2007-01-01</p> <p>The cyclic oxidation behavior of simple aluminide and platinum aluminide coatings on various superalloy substrates was investigated at three temperatures. Coatings of ?-Ni<span class="hlt">Al</span>, ?-NiPt<span class="hlt">Al</span> and Pt-modified ?–?? were tested and compared in dry oxygen at 1050, 1100 and 1150 °C. There was a clear influence of substrate sulfur content on the oxidation behavior of ?-Ni<span class="hlt">Al</span> coatings at all temperatures. The impact</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2010JNuM..399..189A"><span id="translatedtitle">U-Mo/<span class="hlt">Al</span>-Si interaction: Influence of Si concentration</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Allenou, J.; Palancher, H.; Iltis, X.; Cornen, M.; Tougait, O.; Tucoulou, R.; Welcomme, E.; Martin, Ph.; Valot, C.; Charollais, F.; Anselmet, M. C.; Lemoine, P.</p> <p>2010-04-01</p> <p>Within the framework of the development of low enriched nuclear fuels for research reactors, U-Mo/<span class="hlt">Al</span> is the most promising option that has however to be optimised. Indeed at the U-Mo/<span class="hlt">Al</span> interfaces between U-Mo particles and the <span class="hlt">Al</span> matrix, an interaction layer grows under irradiation inducing an unacceptable fuel swelling. Adding silicon in limited content into the <span class="hlt">Al</span> matrix has clearly improved the in-pile fuel behaviour. This breakthrough is attributed to an U-Mo/<span class="hlt">Al</span>-Si protective layer around U-Mo particles appeared during fuel manufacturing. In this work, the evolution of the microstructure and composition of this protective layer with increasing Si concentrations in the <span class="hlt">Al</span> matrix has been investigated. Conclusions are based on the characterization at the micrometer scale (X-ray diffraction and energy dispersive spectroscopy) of U-Mo7/<span class="hlt">Al</span>-Si diffusion couples obtained by thermal annealing at 450 °C. Two types of interaction layers have been evidenced depending on the Si content in the <span class="hlt">Al</span>-Si alloy: the threshold value is found at about 5 wt.% but obviously evolves with temperature. It has been shown that for Si concentrations ranging from 2 to 10 wt.%, the U-Mo7/<span class="hlt">Al</span>-Si interaction is bi-layered and the Si-rich part is located close to the <span class="hlt">Al</span>-Si for low Si concentrations (below 5 wt.%) and close to the U-Mo for higher Si concentrations. For Si weight fraction in the <span class="hlt">Al</span> alloy lower than 5 wt.%, the Si-rich sub-layer (close to <span class="hlt">Al</span>-Si) consists of U(<span class="hlt">Al</span>, Si) 3 + UMo 2<span class="hlt">Al</span> 20, when the other sub-layer (close to U-Mo) is silicon free and made of UAl 3 and U 6Mo 4<span class="hlt">Al</span> 43. For Si weight concentrations above 5 wt.%, the Si-rich part becomes U 3(Si, <span class="hlt">Al</span>) 5 + U(<span class="hlt">Al</span>, Si) 3 (close to U-Mo) and the other sub-layer (close to <span class="hlt">Al</span>-Si) consists of U(<span class="hlt">Al</span>, Si) 3 + UMo 2<span class="hlt">Al</span> 20. On the basis of these results and of a literature survey, a scheme is proposed to explain the formation of different types of ILs between U-Mo and <span class="hlt">Al</span>-Si alloys (i.e. different protective layers).</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2014Nanos...610784L"><span id="translatedtitle"><span class="hlt">Al</span>2C monolayer: the planar tetracoordinate carbon global minimum</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Li, Yafei; Liao, Yunlong; Schleyer, Paul Von Ragué; Chen, Zhongfang</p> <p>2014-08-01</p> <p>Inspired by our theoretical finding that C2<span class="hlt">Al</span>62- has a planar D2h minimum with two planar tetracoordinate carbons (ptCs), we computationally designed a new two-dimensional (2D) inorganic material, an <span class="hlt">Al</span>2C monolayer. All carbons in this monolayer are ptC's, stabilized inductively by binding to four electropositive <span class="hlt">Al</span> atoms in the same plane. The <span class="hlt">Al</span>2C monolayer is semiconducting with an indirect minimum band gap and a slightly larger direct band gap. Good persistence of the <span class="hlt">Al</span>2C monolayer is indicated by its moderate cohesive energy, the absence of imaginary modes in its phonon spectrum, and the high melting point predicted by molecular dynamics (MD) simulations. Moreover, a particle-swarm optimization (PSO) global minimum search found the <span class="hlt">Al</span>2C monolayer to be the lowest-energy 2D structure compared to other <span class="hlt">Al</span>2C alternatives. Dividing the <span class="hlt">Al</span>2C monolayer results in one-dimensional (1D) <span class="hlt">Al</span>2C nanoribbons, which are computed to have quite rich characteristics such as direct or indirect band gaps with various values, depending on the direction of the division and the resulting edge configuration.Inspired by our theoretical finding that C2<span class="hlt">Al</span>62- has a planar D2h minimum with two planar tetracoordinate carbons (ptCs), we computationally designed a new two-dimensional (2D) inorganic material, an <span class="hlt">Al</span>2C monolayer. All carbons in this monolayer are ptC's, stabilized inductively by binding to four electropositive <span class="hlt">Al</span> atoms in the same plane. The <span class="hlt">Al</span>2C monolayer is semiconducting with an indirect minimum band gap and a slightly larger direct band gap. Good persistence of the <span class="hlt">Al</span>2C monolayer is indicated by its moderate cohesive energy, the absence of imaginary modes in its phonon spectrum, and the high melting point predicted by molecular dynamics (MD) simulations. Moreover, a particle-swarm optimization (PSO) global minimum search found the <span class="hlt">Al</span>2C monolayer to be the lowest-energy 2D structure compared to other <span class="hlt">Al</span>2C alternatives. Dividing the <span class="hlt">Al</span>2C monolayer results in one-dimensional (1D) <span class="hlt">Al</span>2C nanoribbons, which are computed to have quite rich characteristics such as direct or indirect band gaps with various values, depending on the direction of the division and the resulting edge configuration. Electronic supplementary information (ESI) available: Complete citation of ref. 50, the band structure of an <span class="hlt">Al</span>2C monolayer computed using the HSE06 functional, snapshots of MD simulations, and bulk structures of <span class="hlt">Al</span>2C-II and <span class="hlt">Al</span>2C-III. See DOI: 10.1039/c4nr01972e</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://arxiv.org/pdf/1404.5204.pdf"><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> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Molleja, Javier García</p> <p>2014-01-01</p> <p>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> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/6152580"><span id="translatedtitle">First-principles investigation of mechanical behavior of B2 type aluminides: Fe<span class="hlt">Al</span> and Ni<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Fu, C.L.; Yoo, M.H.</p> <p>1990-01-01</p> <p>First-principles calculations of the elastic constants, shear fault energies, and cleavage strength of Ni<span class="hlt">Al</span> and Fe<span class="hlt">Al</span> are presented. For Ni<span class="hlt">Al</span>, we find that the dissociation of {l angle}111{r angle} superdislocation into partial dislocations is unlikely, due to a high antiphase boundary energy and a weak repulsive elastic force between partial dislocations. Fe<span class="hlt">Al</span> has a high ideal cleavage strength as a result of the directional d-bond formation at the Fe sites. The strong ordering behavior of Ni<span class="hlt">Al</span> is explained in terms of the <span class="hlt">Al</span>-to-Ni charge transfer and the repulsive interaction between <span class="hlt">Al</span> atoms. The spontaneous glide decomposition of the {l angle}111{r angle} superdislocation in Ni<span class="hlt">Al</span> is also discussed. 8 refs., 2 figs., 2 tabs.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2014JaJAP..53e1001Y"><span id="translatedtitle">Reduction in leakage current in <span class="hlt">Al</span>GaN/GaN HEMT with three <span class="hlt">Al</span>-containing step-graded <span class="hlt">Al</span>GaN buffer layers on silicon</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Yu, Xinxin; Ni, Jinyu; Li, Zhonghui; Zhou, Jianjun; Kong, Cen</p> <p>2014-05-01</p> <p><span class="hlt">Al</span>GaN/GaN high-electron-mobility transistor (HEMT) structures with two and three <span class="hlt">Al</span>-containing step-graded <span class="hlt">Al</span>GaN buffer layers (BLs) were grown on silicon (111) substrates by metal organic chemical vapor deposition. Considerable tensile stress was observed in the GaN grown with only two 0.8 µm <span class="hlt">Al</span>GaN BLs, while a large in-plane compression in GaN grown with three 2.3 µm <span class="hlt">Al</span>GaN BLs. The reverse gate leakage current in the HEMT with three <span class="hlt">Al</span>GaN BLs was approximately 0.1 µA/mm, which was more than one order of magnitude smaller than that for the HEMT with two <span class="hlt">Al</span>GaN BLs. A three-terminal off-state breakdown voltage of 265 V and a vertical gate-to-substrate breakdown voltage of 510 V were obtained in the HEMT with three <span class="hlt">Al</span>GaN BLs. Detailed analysis was performed on the basis of the structural properties of <span class="hlt">Al</span>GaN/GaN heterostructures.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://www.rpi.edu/~wetzel/Preprints/APLIRReflectionRamanAppl.Phys.Lett.68,2547-9(1996).pdf"><span id="translatedtitle">Infrared reflection of GaN and <span class="hlt">Al</span>GaN thin film heterostructures with <span class="hlt">Al</span>N buffer layers</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Wetzel, Christian M.</p> <p></p> <p>by atmospheric pressure metal organic vapor phase epitaxy MOVPE . On top of a GaN layer with a thickness of 2 mInfrared reflection of GaN and <span class="hlt">Al</span>GaN thin film heterostructures with <span class="hlt">Al</span>N buffer layers C. Wetzel substrates. The individual layers of GaN and <span class="hlt">Al</span>GaN and the <span class="hlt">Al</span>N buffer layer are identified by their phonon</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_20");'>20</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li class="active"><span>22</span></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_22 --> <div id="page_23" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="441"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/49710267"><span id="translatedtitle">Flow boiling CHF enhancement using <span class="hlt">Al</span> 2O 3 nanofluid and an <span class="hlt">Al</span> 2O 3 nanoparticle deposited tube</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Tae Il Kim; Won Joon Chang; Soon Heung Chang</p> <p>2011-01-01</p> <p>This study describes flow boiling critical heat flux (CHF) experiments using <span class="hlt">Al</span>2O3 nanofluid and <span class="hlt">Al</span>2O3 nanoparticle deposited tubes. The flow boiling CHF of <span class="hlt">Al</span>2O3 nanofluid with a plain tube (NFPT) and de-ionized water with an <span class="hlt">Al</span>2O3 nanoparticle deposited tube (DWNT) were enhanced up to about 80% for all experimental conditions. There was no big difference in the CHF results between</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40437007"><span id="translatedtitle">Effect of the <span class="hlt">Al</span> 2O 3 + Ni–<span class="hlt">Al</span> multilayer on the mechanical properties of Inconel 600 alloy</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>H. Garbacz; P. Widlickil; T. Wierzcho?; K. J. Kurzyd?owski</p> <p>2006-01-01</p> <p><span class="hlt">Al</span>2O3+Ni–<span class="hlt">Al</span> multilayer coatings have been produced on Inconel 600 by glow discharge assisted oxidizing of substrates pre-coated with aluminum by magnetron sputtering. These layers have a diffusive structure and can be produced on parts of complicated shapes. The presence of the <span class="hlt">Al</span>2O3 layer on intermetallic <span class="hlt">Al</span>–Ni imparts high hardness (7.2 GPa) and good wear resistance.In this paper, the influence of</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/49415052"><span id="translatedtitle">On Core Structure Properties and Peierls Stress of Dissociated Superdislocations in Aluminides: Ni<span class="hlt">Al</span> and Fe<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Xiaozhi Wu; Shaofeng Wang; Congbo Li</p> <p>2010-01-01</p> <p>The study of dislocation properties in B2 structure intermetallics Ni<span class="hlt">Al</span> and Fe<span class="hlt">Al</span> is crucial to understand their mechanical behaviors. In this paper, the core structure and Peierls stress of collinear dissociated (111}{110} edge superdislocations in Ni<span class="hlt">Al</span> and Fe<span class="hlt">Al</span> are investigated with the modified P-N dislocation equation. The generalized stacking fault energy curve along (111) direction in {110} slip plane contains</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/49150489"><span id="translatedtitle">Wear assessment of <span class="hlt">Al\\/Al</span> 2O 3 nano-composite surface layer produced using friction stir processing</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>A. Shafiei-Zarghani; S. F. Kashani-Bozorg; A. Zarei-Hanzaki</p> <p>2011-01-01</p> <p>An innovative technique, friction stir processing (FSP) was employed for the fabrication of <span class="hlt">Al\\/Al</span>2O3 nano-composite surface layer on an <span class="hlt">Al</span> alloy substrate. Aluminum work pieces with pre-placed nano-sized <span class="hlt">Al</span>2O3 powder which was filled in a shallow groove were subjected to various numbers of passes from one to four. Scanning electron microscopy studies showed that increase in the number of FSP</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2004JAP....96..895V"><span id="translatedtitle">High quality heteroepitaxial <span class="hlt">Al</span>N films on diamond</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Vogg, G.; Miskys, C. R.; Garrido, J. A.; Hermann, M.; Eickhoff, M.; Stutzmann, M.</p> <p>2004-07-01</p> <p>Heteroepitaxial <span class="hlt">Al</span>N films grown on (100)- and (111)-oriented diamond (C?) substrates by plasma-induced molecular beam epitaxy have been investigated by x-ray diffraction (XRD) and atomic force microscopy (AFM). High quality epitaxial growth of almost strain-free wurtzite <span class="hlt">Al</span>N is observed for both orientations. For the <span class="hlt">Al</span>N/C?(111) heterostructures, the epitaxial orientation relationship (0001)[101¯0] <span class="hlt">Al</span>N?(111)[011¯]C? is obtained. However, a significant fraction of up to 20% of the epitaxial layer is oriented differently with (101¯1) <span class="hlt">Al</span>N?(111)C?. In case of <span class="hlt">Al</span>N on C?(100), a double-domain structure with either (0001)[101¯0] <span class="hlt">Al</span>NI?(100)[011]C? or (0001)[1¯21¯0] <span class="hlt">Al</span>NII?(100)[011]C? is found. The linewidths of the XRD ? and 2?/? scans of the symmetric <span class="hlt">Al</span>N 002 reflection have been determined as 1.4 and 0.17° for <span class="hlt">Al</span>N/C?(100), 0.55° and 0.11° for <span class="hlt">Al</span>N/C?(111), as well as 0.51 and 0.05° for an <span class="hlt">Al</span>N/sapphire (0001) reference sample grown under similar conditions. Thus, the crystal quality of <span class="hlt">Al</span>N on C?(111) is close to that of <span class="hlt">Al</span>N on sapphire. The corresponding <span class="hlt">Al</span>N rms roughness values found by AFM are 1.9 nm on C?(100), 1.7 nm on C?(111), and 3.2 nm on sapphire (0001), respectively.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19990021236&hterms=meniscus+physical+mechanical+properties&qs=N%3D0%26Ntk%3DAll%26Ntx%3Dmode%2Bmatchall%26Ntt%3Dmeniscus%2Bphysical%2Bmechanical%2Bproperties"><span id="translatedtitle">High Temperature Mechanical Characterization and Analysis of <span class="hlt">Al</span>2O3 /<span class="hlt">Al</span>2O3 Composition</span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Gyekenyesi, John Z.; Jaskowiak, Martha H.</p> <p>1999-01-01</p> <p>Sixteen ply unidirectional zirconia coated single crystal <span class="hlt">Al</span>2O3 fiber reinforced polycrystalline <span class="hlt">Al</span>2O3 was tested in uniaxial tension at temperatures to 1400 C in air. Fiber volume fractions ranged from 26 to 31%. The matrix has primarily open porosity of approximately 40%. Theories for predicting the Young's modulus, first matrix cracking stress, and ultimate strength were applied and evaluated for suitability in predicting the mechanical behavior of <span class="hlt">Al</span>2O3/<span class="hlt">Al</span>2O3 composites. The composite exhibited pseudo tough behavior (increased area under the stress/strain curve relative to monolithic alumina) from 22 to 1400 C. The rule-of-mixtures provides a good estimate of the Young's modulus of the composite using the constituent properties from room temperature to approximately 1200 C for short term static tensile tests in air. The ACK theory provides the best approximation of the first matrix cracking stress while accounting for residual stresses at room temperature. Difficulties in determining the fiber/matrix interfacial shear stress at high temperatures prevented the accurate prediction of the first matrix cracking stress above room temperature. The theory of Cao and Thouless, based on Weibull statistics, gave the best prediction for the composite ultimate tensile strength.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/897563"><span id="translatedtitle">Magnetization anomaly of Nb3<span class="hlt">Al</span> strands and instability of Nb3<span class="hlt">Al</span> Rutherford cables</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Yamada, Ryuji; /Fermilab; Kikuchi, Akihiro; /Tsukuba Magnet Lab; Wake, Masayoshi; /KEK, Tsukuba</p> <p>2006-08-01</p> <p>Using a Cu stabilized Nb{sub 3}<span class="hlt">Al</span> strand with Nb matrix, a 30 meter long Nb{sub 3}<span class="hlt">Al</span> Rutherford cable was made by a collaboration of Fermilab and NIMS. Recently the strand and cable were tested. In both cases instability was observed at around 1.5 Tesla. The magnetization of this Nb{sub 3}<span class="hlt">Al</span> strand was measured first using a balanced coil magnetometer at 4.2 K. Strands showed an anomalously large magnetization behavior around at 1.6 T, which is much higher than the usual B{sub c2} {approx} 0.5 Tesla (4.2 K) of Nb matrix. This result is compared with the magnetization data of short strand samples using a SQUID magnetometer, in which a flux-jump signal was observed at 0.5 Tesla, but not at higher field. As a possible explanation for this magnetization anomaly, the interfilament coupling through the thin Nb films in the strands is suggested. The instability problem observed in low field tests of the Nb{sub 3}<span class="hlt">Al</span> Rutherford cables is attributed to this effect.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2009APS..SHK.B5002B"><span id="translatedtitle">Constitutive Model Constants for <span class="hlt">Al</span>7075-T651 and <span class="hlt">Al</span>7075-T6</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Brar, Nachhatter; Joshi, Vasant; Harris, Bryan</p> <p>2009-06-01</p> <p>Aluminum 7075-T651 and 7075-T6 are characterized at quasi-static and high strain rates to determine Johnson-Cook (J-C) strength and fracture model constants. Constitutive model constants are required as input to computer codes to simulate projectile (fragment) impact or similar impact events on structural components made of these material. J-C strength model constants (A, B, n, C, and m) for the two alloys are determined from tension stress-strain data at room and high temperature to 250^oC. J-C strength model constants for <span class="hlt">Al</span>7075-T651 are: A=527 MPa, B=676 MPa, n=0.71, C=0.017, and m=1.61 and for <span class="hlt">Al</span>7075-T6: A = 546 MPa, B = 674 MPa, n = 0.72, C = 0.059, and m =1.56. J-C fracture model constants are determined form quasi-static and high strain rate/high temperature tests on notched and smooth tension specimens. J-C fracture model constants for the two alloys are: <span class="hlt">Al</span>7075-T651; D1 = 0.110, D2 = 0.573, D3= -3.4446, D4 = 0.016, and D 5= 1.099 and <span class="hlt">Al</span>7075-T6; D1= 0.451 D2= -0.952 D3= -.068, D4 =0.036, and D5 = 0.697.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2011ApSS..257.3489A"><span id="translatedtitle">Enhanced fibroblast cell adhesion on <span class="hlt">Al/Al</span>2O3 nanowires</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Aktas, O. C.; Sander, M.; Miró, M. M.; Lee, J.; Akkan, C. K.; Smail, H.; Ott, A.; Veith, M.</p> <p>2011-02-01</p> <p>Biological cells stick together via transmembrane proteins, which are linked to receptor molecules of the extracellular matrix (ECM). This specific biochemical adhesion plays a leading role in many cellular processes, among them cell differentiation, morphogenesis, and wound healing. Various medical applications require endogen cells to bind to an exogene substrate as in the case of an implant. Coatings with proteins that naturally belong to the ECM are known to enhance the cell adhesion. However, the choice of inorganic materials, which promote cell adhesion, is limited. Here, we report on a new engineered surface composed of <span class="hlt">Al/Al</span>2O3 bi-phasic nanowires (NWs), which promotes the adhesion of fibroblast cells. Fibroblasts grow well on this inorganic layer and keep proliferating. Using the cell monolayer rheology (CMR) technique, we show that the adhesion of fibroblasts on <span class="hlt">Al/Al</span>2O3 NWs is comparable to fibronectin coated surfaces. To our knowledge, this is one of the strongest cell adhesions on an inorganic surface, which has been reported on so far, since it compares to bio-organic layers such as fibronectin.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://home.iitk.ac.in/~kbiswas/mattransa1.pdf"><span id="translatedtitle">Laser Cladding of Quasi-Crystal-Forming <span class="hlt">Al</span>-Cu-Fe-Bi on an <span class="hlt">Al</span>-Si Alloy Substrate</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Srivastava, Kumar Vaibhav</p> <p></p> <p>to several distinctive properties, such as very high hardness,[2] low friction coefficient,[3] low thermal of aluminum. The for- mation of phases such as blocky hexagonal <span class="hlt">Al</span>-Fe-Si and a ternary eutectic (<span class="hlt">Al</span> Cu<span class="hlt">Al</span>2 Si a strong effect on the size and distribution of Bi particles. The dry-sliding wear properties</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=EPRINT&redirectUrl=http://euler.phys.cmu.edu/widom/pubs/drafts/potentials/wm4.ps"><span id="translatedtitle">Firstprinciples interatomic potentials for transitionmetal aluminides. II. Application to <span class="hlt">Al</span>Co and <span class="hlt">Al</span>Ni phase diagrams</span></a></p> <p><a target="_blank" href="http://www.osti.gov/eprints/">E-print Network</a></p> <p>Widom, Michael</p> <p></p> <p>the binary alloy phase diagrams of <span class="hlt">Al</span> 1\\Gammax Co x and <span class="hlt">Al</span> 1\\Gammax Ni x . When the full theory is taken­Co and <span class="hlt">Al</span>­Ni phase diagrams Mike Widom Department of Physics, Carnegie Mellon University, Pittsburgh into ac­ count, we successfully reproduce the phase diagrams up to x = 0:3. While many of the general</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40939092"><span id="translatedtitle">High temperature phase equilibria near Ti–50 at% <span class="hlt">Al</span> composition in Ti–<span class="hlt">Al</span> system studied by directional solidification</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>In-Soo Jung; Min-Chul Kim; Je-Hyun Lee; Myung-Hoon Oh; Dang-Moon Wee</p> <p>1999-01-01</p> <p>High temperature phase diagram near the stoichiometric composition of Ti<span class="hlt">Al</span> has been established by the directional solidification and quenching technique. The quenched dendrite morphologies showed that the first solidified phase was the ? phase in Ti–44, 46, 48 at% <span class="hlt">Al</span> alloys and the ? phase in Ti–50, 52 at% <span class="hlt">Al</span> alloys. From the EDS analysis of the quenched dendrite tips</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASA-TRS&redirectUrl=http://ntrs.nasa.gov/search.jsp?R=19920029400&hterms=neutron+scattering&qs=Ntx%3Dmode%2Bmatchall%26Ntk%3DAll%26N%3D0%26No%3D10%26Ntt%3D%2522neutron%2Bscattering%2522"><span id="translatedtitle">A novel hydride phase in hydrogen charged Ti3<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://ntrs.nasa.gov/search.jsp">NASA Technical Reports Server (NTRS)</a></p> <p>Schwartz, D. S.; Lederich, R. J.; Sastry, S. M. L.; Yelon, W. B.; Berliner, R. R.</p> <p>1991-01-01</p> <p>The effect of internal hydrogen on the microstructural modification of Ti3<span class="hlt">Al</span> (alpha-2) compound was studied by large-angle neutron scattering and TEM. Ti-25 at. pct <span class="hlt">Al</span> (Ti3<span class="hlt">Al</span>) specimens were exposed to gaseous hydrogen atmosphere at 600 C that resulted in internal hydrogen concentration of 2000 ppm. The hydrogen-charged alloy consisted of a mixture of alpha-2 phase and a novel Ti3<span class="hlt">Al</span>H phase with the E2(1), (Pm3m) crystal structure. The lattice parameters and atomic arrangement of the Ti3<span class="hlt">Al</span>H phase were determined.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/1023304"><span id="translatedtitle">Creep in Directionally Solidified Ni<span class="hlt">Al</span>-Mo Eutectics</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dudova, Marie [Institute of Physics, Czech Republic; Kucharova, Kveta [Institute of Physics, Czech Republic; Bartak, Tomas [Institute of Physics, Czech Republic; Bei, Hongbin [ORNL; George, Easo P [ORNL; Somsen, Ch. [Ruhr University, Bochum, Germany; Dlouhy, A. [Institute of Physics of Materials, Brno, Czech Republic</p> <p>2011-01-01</p> <p>A directionally solidified Ni<span class="hlt">Al</span>-Mo eutectic and an Ni<span class="hlt">Al</span> intermetallic, having respective nominal compositions Ni-45.5<span class="hlt">Al</span>-9Mo and Ni-45.2<span class="hlt">Al</span> (at.%), were loaded in compression at 1073 and 1173 K. Formidable strengthening by regularly distributed Mo fibres (average diameter 600 nm, volume fraction 14%) was observed. The fibres can support compression stresses transferred from the plastically deforming matrix up to a critical stress of the order of 2.5 GPa, at which point they yield. Microstructural evidence is provided for the dislocation-mediated stress transfer from the Ni<span class="hlt">Al</span> to the Mo phase.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/10178517"><span id="translatedtitle">Experimental characterization of <span class="hlt">ALS</span> undulator radiation</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Heimann, P.; Mossessian, D.; Warwick, A.; Gullikson, E.; Wang, C.; Marks, S.; Padmore, H.; Kincaid, B.</p> <p>1994-07-15</p> <p>The radiation from the 5 cm period undulator at the Advanced Light Source (<span class="hlt">ALS</span>) has been characterized using a transmission grating spectrometer. Spectral and angular distributions of radiation were measured for deflection parameter K values between 0.45 and 2.12 at low storage ring current (0.1--0.5 mA). From the calibration of the spectrometer, the absolute flux density of the undulator harmonics has been determined together with the spectral linewidth. The electron the beam emittance was determined by analyzing the angular distribution of the red-shifted fundamental. Comparison has been made with radiation calculations based upon the measured magnetic field data of the undulator. Including field errors, electron beam emittance and energy spread, good agreement is found between theoretically and experimentally determined harmonic widths and peak brightness.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015APS..MARM14006N"><span id="translatedtitle"><span class="hlt">Al</span> Nanowire Arrays For Plasmonic Devices</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Nesbitt, Nathan T.; Rose, Aaron H.; Calm, Yitzi M.; Merlo, Juan M.; Shepard, Steve; McMahon, Greg; Tsung, Chia-Kuang; Burns, Michael J.; Naughton, Michael J.</p> <p>2015-03-01</p> <p>Aluminum nanowires have been fabricated in ordered vertical arrays on bulk <span class="hlt">Al</span> foil with controlled wire dimensions and spacing. Large aspect ratio wires were obtained, including sub-micron wire diameters and supra-10 ?m height. The somewhat novel method of fabrication utilizes nanoimprint lithography and the economical electrochemical anodization process used to make anodized aluminum oxide (AAO) templates, suggesting potential facile production and scalability. To our knowledge, arrays of vertical metallic nanowires (i.e. differing from semiconductor nanowire or carbon nanofiber arrays) of the obtained dimensions have not previously been reported. These dimensions may be favorable for nanoscale photonic and plasmonic transmission, nanocoax solar cells, and non-diffaction-limited optical microscopy. This material is based upon work supported by the National Science Foun- dation Graduate Research Fellowship under Grant No. (DGE-1258923).</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1985ICRC....1..357M"><span id="translatedtitle">Galactic distribution of interstellar <span class="hlt">Al</span>-26</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Mahoney, W. A.; Higdon, J. C.; Ling, J. C.; Wheaton, W. A.; Jacobson, A. S.</p> <p>1985-08-01</p> <p>A narrow cosmic gamma ray line at 1809 keV was discovered which was interpreted as resulting from the decay of approximately 3 Mtheta of <span class="hlt">Al</span>-26 residing in the galactic disk. While its intrinsic width was unresolved by the HEAO 3 spectrometer, a (1 sigma) limit of 3 keV FWHM was obtained; this corresponds to bulk motions of v 250 km/s, which is consistent with material at rest in the ISM. Sites which have been suggested include type II supernovae and massive stars which are members of the extreme population I, as well as novae and red giants which are associated with an older disk population. The HEAO 3 data was used to distinguish between these two stellar populations.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2005PhRvB..71o5416V"><span id="translatedtitle">Inverse photoemission spectroscopy of <span class="hlt">Al</span>(100)</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Veyan, J. F.; Ibañez, W.; Bartynski, R. A.; Vargas, P.; Häberle, P.</p> <p>2005-04-01</p> <p>We present results from k -resolved inverse photoemission spectroscopy (IPS) in the isochromat mode from the <span class="hlt">Al</span>(100) surface. To identify the origin of the different peaks in the photon intensity we have performed a first principles calculation of the bulk band structure in the LMTO formalism and apply it to predict bulk derived features in the IPS spectra. We have been able to identify several of the experimental features as derived from bulk optical transitions together with various surface resonances. A particular surface state detected along the ?¯ Xmacr direction displays the opening of a gap at the zone boundary. Most of the dominant surface features could be traced back to the occupied surface state at ?¯ , previously detected by photoemission.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1999MMTA...30..335A"><span id="translatedtitle">Cavitation erosion of Ni<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Akhtar, A.; Salvi, R.; Sikka, V. K.</p> <p>1999-02-01</p> <p>Vibratory cavitation erosion tests were carried out on as-cast Ni<span class="hlt">Al</span> intermetallic compounds containing 46.5 to 62.1 at pct Ni. The erosion rate decreased with increasing nickel content by over two orders of magnitude, from a high of 16.4 to 0.11 mg·h-1. These low erosion rates exhibited by the nickel-rich alloys containing 58 and 62.1 at. pct Ni, the interruptions in their mass loss with time, and the unusual effects associated with surface finish and intensity of cavitation were found to be associated with the stress-induced martensitic transformation. Alloys containing 58 to 62 at. pct Ni have the potential for use as materials for the cavitation protection of hydraulic machinery.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2014JMEP...23.3778Z"><span id="translatedtitle"><span class="hlt">Al</span>Nb-Based Titanium Aluminide</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Zhang, Kezhao; Liu, Ming; Lei, Zhenglong; Chen, Yanbin</p> <p>2014-10-01</p> <p>The microstructure of laser-tungsten inert gas hybrid welded Ti2<span class="hlt">Al</span>Nb-based joints and their tensile properties at room temperature were investigated in this paper. The results showed that good-quality joints could be obtained by hybrid welding process. The microstructure evolution was identified by means of optical microscopy, scanning electron microscopy, x-ray diffraction, and transmission electron microscopy. The fusion zone mainly consisted of B2 phase due to the rapid cooling rate, as well as high Nb content. The phase compositions of the heat-affected zone were varied with different thermal cycles during the welding process. Tensile tests at room temperature showed that fracture tended to occur in the fusion zone, and the tensile strength and elongation were 950 MPa and 4.3%, respectively. The fracture mode was quasi-cleavage based on the observation of the fracture morphology.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li class="active"><span>23</span></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_23 --> <div id="page_24" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="461"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/348927"><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> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Shen, Z.</p> <p>1999-02-12</p> <p>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 cubic LEED patterns transform irreversibly to unreconstructed quasicrystalline patterns upon annealing to higher temperatures, indicating that the cubic overlayers are metastable. Based upon the data for three chemically-identical, but symmetrically-inequivalent surfaces, a model is developed for the relation between the cubic overlayers and the quasicrystalline substrate. The model is based upon the related symmetries of cubic close-packed and icosahedral-packed materials. These results may be general among <span class="hlt">Al</span>-rich, icosahedral materials. STM study of <span class="hlt">Al</span>-Pd-Mn fivefold surface shows that terrace-step-kink structures start to form on the surface after annealing above 700K. Large, atomic ally-flat terraces were formed after annealing at 900K. Fine structures with fivefold icosahedral symmetry were found on those terraces. Data analysis and comparison of the STM images and structure model of icosahedral <span class="hlt">Al</span>-Pd-Mn suggest that the fine structures in the STM images may be the pseudo Mackay (PMI) clusters which are the structure units of the structure model. Based upon his results, he can conclude that quasicrystalline structures are the stable structures of quasicrystal surfaces. In other words, quasicrystalline structures extend from the bulk to the surface. As a result of the effort reported in this dissertation, he believes that he has increased his understanding of the surface structure of icosahedral quasicrystals to a new level.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2013-01-29/pdf/2013-01882.pdf"><span id="translatedtitle">78 FR 6172 - In the Matter of the Designation of Ahmed Abdullah Saleh <span class="hlt">al</span>-Khazmari <span class="hlt">al</span>-Zahrani Also Known as Abu...</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2013-01-29</p> <p>...8168] In the Matter of the Designation of Ahmed Abdullah Saleh <span class="hlt">al</span>- Khazmari <span class="hlt">al</span>-Zahrani...as Abu Maryam <span class="hlt">al</span>-Saudi Also Known as Ahmed Abdullah S <span class="hlt">al</span>-Zahrani Also Known as Ahmad...as Abu Maryam <span class="hlt">al</span>-Azadi Also Known as Ahmed bin Abdullah Saleh bin <span class="hlt">al</span>-Zahrani...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&redirectUrl=http://www.gpo.gov:80/fdsys/pkg/FR-2010-12-09/pdf/2010-31001.pdf"><span id="translatedtitle">75 FR 76771 - In the Matter of the Designation of Fahd Mohammed Ahmed <span class="hlt">al</span>-Quso, also known as Fahd <span class="hlt">al</span>-Quso, also...</span></a></p> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2010-12-09</p> <p>...Matter of the Designation of Fahd Mohammed Ahmed <span class="hlt">al</span>-Quso, also known as Fahd <span class="hlt">al-Quso...al</span>-Adani, also known as Fahd Mohammed Ahmed <span class="hlt">al</span>-Awlaqi, also known as Huthaifah <span class="hlt">al</span>-Yemeni...that the individual known as Fahd Mohammed Ahmed <span class="hlt">al</span>-Quso, also known as Fahd...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2010SurSc.604.1737C"><span id="translatedtitle">Ultra thin <span class="hlt">Al</span> film on the W(110) surface</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Choi, D. S.; Kim, D. H.</p> <p>2010-09-01</p> <p>We have investigated the surface structure of the <span class="hlt">Al</span>/W(110) surface using low energy electron diffraction (LEED) and low energy ion scattering spectroscopy (ISS). We observe a p(2 × 1) double domain LEED image for the 0.5 ML <span class="hlt">Al</span>/W(110) surface at annealing temperature 850 °C. We found that 0.5 ML <span class="hlt">Al</span> atoms cover on the W(110) surface uniformly but do not form 3 or 2-dimensional islands. We also measured the <span class="hlt">Al</span> adsorption site at the <span class="hlt">Al</span>/W(110)-p(2 × 1) surface using ISS. We found that <span class="hlt">Al</span> atoms adsorbed at the center of the bridge site. The height of the adsorbed <span class="hlt">Al</span> atoms is determined to be 2.18 ± 0.15 Å above the W surface layer.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/25090358"><span id="translatedtitle">Optical behavior and structural property of Cu<span class="hlt">Al</span>S? and Ag<span class="hlt">Al</span>S? wide-bandgap chalcopyrites.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Ho, Ching-Hwa; Pan, Chia-Chi</p> <p>2014-08-01</p> <p>Single crystals of Cu<span class="hlt">Al</span>S? and Ag<span class="hlt">Al</span>S? were grown by chemical vapor transport method using ICl? as the transport. The as-grown Cu<span class="hlt">Al</span>S? crystals reveal transparent and light-green color. Most of them possess a well-defined (112) surface. The Ag<span class="hlt">Al</span>S? crystals essentially show transparent and white color in vacuum. As the Ag<span class="hlt">Al</span>S? was put into the atmosphere, the crystal surface gradually darkened and became brownish because of the surface reaction with humidity or hydrogen gas. After a long-term chemical reaction process, the Ag<span class="hlt">Al</span>S? will transform into a Ag<span class="hlt">Al</span>O? oxide with yellow color. From x-ray diffraction measurements, both Cu<span class="hlt">Al</span>S? and Ag<span class="hlt">Al</span>S? as-grown crystals show single-phase and isostructural to a chalcopyrite structure. The (112) face is more preferable for the formation of the chalcopyrite crystals. The energies of interband transitions of the Cu<span class="hlt">Al</span>S? and Ag<span class="hlt">Al</span>S? were determined accurately by thermoreflectance measurements in a wide energy range of 2-6 eV. The valence-band electronic structures of Cu<span class="hlt">Al</span>S? and Ag<span class="hlt">Al</span>S? have been detailed and characterized using polarized-thermoreflectance measurements in the temperature range between 30 and 300 K. The band-edge transitions belonging to the E(?) and E(?) polarizations have been, respectively, identified. The band edge of Ag<span class="hlt">Al</span>S? is near 3.2 eV while that of Ag<span class="hlt">Al</span>S? is about 3.5 eV. On the basis of the experimental analyses, optical and sensing behaviors of the chalcopyrite crystals have been realized. PMID:25090358</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40275569"><span id="translatedtitle">Effects of TiC and <span class="hlt">Al</span> 4C 3 addition on combustion synthesis of Ti 2<span class="hlt">Al</span>C</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>C. L. Yeh; Y. G. Shen</p> <p>2009-01-01</p> <p>Preparation of the ternary carbide Ti2<span class="hlt">Al</span>C was conducted by combustion synthesis in the mode of self-propagating high-temperature synthesis (SHS) from the elemental powder compacts of Ti:<span class="hlt">Al</span>:C=2:1:1, TiC-containing samples with TiC of 6.67–14.3mol%, and <span class="hlt">Al</span>4C3-containing samples with <span class="hlt">Al</span>4C3 of 1.96–10mol%. Effects of TiC and <span class="hlt">Al</span>4C3 addition were studied on combustion characteristics and the degree of phase conversion. Due to the growth</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2004PSSAR.201.2356L"><span id="translatedtitle">Charge exchange in H+ grazing scattering off clean and <span class="hlt">Al</span>F3 covered <span class="hlt">Al</span>(111) surfaces</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lugo, J. O.; Goldberg, E. C.; Sánchez, E. A.; Grizzi, O.</p> <p>2004-08-01</p> <p>Ion Scattering Spectroscopy with Time-of-Flight analysis is used to characterize the deposition of thin insulating films (<span class="hlt">Al</span>F3) on <span class="hlt">Al</span>(111) samples, and to measure the ion fractions for 20 keV H+ projectiles scattered off clean and <span class="hlt">Al</span>F3 covered <span class="hlt">Al</span>(111) surfaces. The ion fraction measured for the clean surface is 12%, composed mainly of negative ions. For 2 ML of <span class="hlt">Al</span>F3, the ion fraction increases, be- ing in this case mainly composed of positive ions (+ = 33%, - = 3%). A calculation of the dynami- cal evolution of the collision and the resonant charge exchange processes describes the experimental trends.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=FEDREG&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> <p><a target="_blank" href="http://www.gpo.gov/fdsys/browse/collection.action?collectionCode=FR">Federal Register 2010, 2011, 2012, 2013, 2014</a></p> <p></p> <p>2012-12-11</p> <p>...Jabhet <span class="hlt">al</span>-Nusra, The Victory Front, <span class="hlt">Al</span> Nusrah Front for the People of the Levant. Dated: November 20, 2012. Hillary Rodham Clinton, Secretary of State. [FR Doc. 2012-29870 Filed 12-10-12; 8:45 am] BILLING CODE...</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2006ZNatA..61..389K"><span id="translatedtitle">Surface Tension of the System NaF -<span class="hlt">Al</span>F3-<span class="hlt">Al</span>2O3 and Surface Adsorption of <span class="hlt">Al</span>2O3</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Kucharík, Marián; Vasiljev, Roman</p> <p>2006-08-01</p> <p>Part of the molten system NaF-<span class="hlt">Al</span>F3-<span class="hlt">Al</span>2O3 was studied by surface tension measurements, which were performed at cryolite ratios (CR) between 1.5 and 3 [CR = n(NaF)/n(<span class="hlt">Al</span>F3)]. The maximal bubble pressure method was applied. The surface adsorption of alumina (<span class="hlt">Al</span>2O3) was also calculated. The obtained results were discussed in terms of the anionic composition of the melt. The addition of <span class="hlt">Al</span>F3 to melt with CR= 3 decreases the surface tension, as <span class="hlt">Al</span>F3 is surface-active in molten Na3<span class="hlt">Al</span>F6. The concentration dependence of the surface tension and the surface adsorption of alumina in the title system are influenced by the formation of surface-active oxofluoroaluminates. An increase of the difference between the surface tension of NaF-<span class="hlt">Al</span>F3 mixtures and the surface tension of pure alumina was observed with decreasing cryolite ratio.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-DOEP&redirectUrl=http://www.osti.gov/pages/biblio/1190777-structure-magnetic-properties-ce-ni-al-ga-new-phase-laal-structure-type"><span id="translatedtitle">Structure and magnetic properties of Ce?(Ni/<span class="hlt">Al</span>/Ga)??—A new phase with the La?<span class="hlt">Al</span>?? structure type</span></a></p> <p><a target="_blank" href="http://www.osti.gov/pages">DOE PAGESBeta</a></p> <p>Janka, Oliver; Shang, Tian; Baumbach, Ryan E.; Bauer, Eric D.; Thompson, Joe D.; Kauzlarich, Susan M.</p> <p>2015-03-01</p> <p>Single crystals of Ce?(Ni/<span class="hlt">Al</span>/Ga)?? were obtained from an <span class="hlt">Al</span> flux reaction. Single crystals of the title compound crystallizing in the orthorhombic space group Immm (No. 71, Z = 2) with a = 436.38(14), b = 1004.5(3) and c = 1293.4(4) pm. This is a standardized unit cell of the previously published La?<span class="hlt">Al</span>?? structure type. Wavelength dispersive microprobe provides the composition of Ce?.?????Ni?.?????<span class="hlt">Al</span>?.?????Ga?.?????. Single crystal refinement provides the composition Ce?Ni?.??<span class="hlt">Al</span>?.??Ga?.?? with substitution of the Ni and Ga on the <span class="hlt">Al</span>1 and <span class="hlt">Al</span>4 sites with the <span class="hlt">Al</span>2 and <span class="hlt">Al</span>3 solely occupied by <span class="hlt">Al</span>. Magnetic susceptibility measurements reveal antiferromagnetic ordering with TN =more »4.8 K and there is no evidence for a ferromagnetic ordering that has been reported for Ce?<span class="hlt">Al</span>??. The effective magnetic moment was found to be ?eff = 1.9?B/Ce, which is lower than the expected value for trivalent Ce (2.54?B/Ce).« less</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/22089639"><span id="translatedtitle">Effect of dislocations on electron mobility in <span class="hlt">Al</span>GaN/GaN and <span class="hlt">AlGaN/Al</span>N/GaN heterostructures</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kaun, Stephen W.; Burke, Peter G.; Kyle, Erin C. H.; Speck, James S. [Materials Department, University of California, Santa Barbara, California 93106 (United States); Wong, Man Hoi; Mishra, Umesh K. [Electrical and Computer Engineering Department, University of California, Santa Barbara, California 93106 (United States)</p> <p>2012-12-24</p> <p><span class="hlt">Al</span>{sub x}Ga{sub 1-x}N/GaN (x = 0.06, 0.12, 0.24) and <span class="hlt">AlGaN/Al</span>N/GaN heterostructures were grown on 6 H-SiC, GaN-on-sapphire, and free-standing GaN, resulting in heterostructures with threading dislocation densities of {approx}2 Multiplication-Sign 10{sup 10}, {approx}5 Multiplication-Sign 10{sup 8}, and {approx}5 Multiplication-Sign 10{sup 7} cm{sup -2}, respectively. All growths were performed under Ga-rich conditions by plasma-assisted molecular beam epitaxy. Dominant scattering mechanisms with variations in threading dislocation density and sheet concentration were indicated through temperature-dependent Hall measurements. The inclusion of an <span class="hlt">Al</span>N interlayer was also considered. Dislocation scattering contributed to reduced mobility in these heterostructures, especially when sheet concentration was low or when an <span class="hlt">Al</span>N interlayer was present.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/22303852"><span id="translatedtitle">High quality semipolar (11{sup ¯}02) <span class="hlt">AlGaN/Al</span>N quantum wells with remarkably enhanced optical transition probabilities</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Ichikawa, S., E-mail: shuhei.ichikawa@optomater.kuee.kyoto-u.ac.jp; Iwata, Y.; Funato, M.; Kawakami, Y., E-mail: kawakami@kuee.kyoto-u.ac.jp [Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510 (Japan); Nagata, S. [JFE Mineral Co. Ltd., Chiba 260-0826 (Japan)</p> <p>2014-06-23</p> <p>Adjusting the growth conditions from those for c-plane growth realizes high-quality semipolar (11{sup ¯}02) <span class="hlt">AlGaN/Al</span>N quantum wells (QWs) with atomically smooth surfaces and abrupt interfaces on <span class="hlt">Al</span>N substrates. Upon comparing the optical properties to those of c-plane QWs using time-integrated and time-resolved photoluminescence spectroscopy, the estimated internal electric field is much smaller in (11{sup ¯}02) <span class="hlt">AlGaN/Al</span>N QWs than in c-plane QWs. Thus, (11{sup ¯}02) <span class="hlt">AlGaN/Al</span>N QWs have narrower emission line widths and remarkably faster radiative recombination lifetimes, realizing highly efficient deep ultraviolet emissions.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/665229"><span id="translatedtitle">Positron lifetime studies of decomposition in 2024 (<span class="hlt">Al</span>-Cu-Mg) and 7010 (<span class="hlt">Al</span>-Zn-Cu-Mg) alloys</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Dlubek, G. [ITA Inst. fuer Innovative Technologien GmbH, Halle (Germany)] [ITA Inst. fuer Innovative Technologien GmbH, Halle (Germany); [Martin-Luther-Univ. Halle-Wittenberg, Halle (Germany). Fachbereich Physik; Lademann, P.; Krause, H.; Krause, S.; Unger, R. [Martin-Luther-Univ. Halle-Wittenberg, Halle (Germany). Fachbereich Physik] [Martin-Luther-Univ. Halle-Wittenberg, Halle (Germany). Fachbereich Physik</p> <p>1998-09-04</p> <p>In the current paper, the decomposition behavior of the engineering alloys 2024 (<span class="hlt">Al</span>-Cu-Mg) and 7010 (<span class="hlt">Al</span>-Zn-Cu-Mg) is studied using positron lifetime measurements. Positrons probe open volume defects such as vacancies and dislocations. However, they may also be used to investigate coherent zones and incoherent precipitates. In order to understand the rather complicated precipitation sequences and the response of positrons to different type of precipitates occurring in 2024 and 7010 alloys, binary and ternary laboratory alloys were also investigated under the same experimental conditions as the engineering alloys. The interpretations of the results are based on experiences of the group from extensive positron studies of laboratory alloys such as <span class="hlt">Al</span>-Zn, <span class="hlt">Al</span>-Zn-Mg, <span class="hlt">Al</span>-Cu, and further <span class="hlt">Al</span> alloys (see also the review (4)). Their collected results are shown as lifetimes and curve-shape parameters S of the electron-positron momentum distribution curves characteristic for different precipitates in <span class="hlt">Al</span> alloys.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/5271432"><span id="translatedtitle">Erosion resistance of Fe<span class="hlt">Al</span>-TiB[sub 2] and Fe<span class="hlt">Al</span>-WC at room and elevated temperatures</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>David E. Alman; Joseph H. Tylczak; Jeffrey A. Hawk</p> <p>2000-01-01</p> <p>The resistance of Fe<span class="hlt">Al</span>-40%TiB[sub 2] and Fe<span class="hlt">Al</span>-80%WC cermets to solid particle erosion at 25, 180, 500 and 700 C was evaluated and compared to the behavior of WC-6%Co (Co-90%WC) cemented carbides. Even though the WC-Co contained a higher volume fraction of the hard phase, the erosion rates of the Fe<span class="hlt">Al</span>-cermets were similar in magnitude to the erosion rates of the WC-Co. However, the erosion rates of the Fe<span class="hlt">Al</span>-cermets either were constant (Fe<span class="hlt">Al</span>-TiB[sub 2]) or decreased (Fe<span class="hlt">Al</span>-WC) with increasing test temperature; whereas, the erosion rates of the WC-Co cemented carbides increased with increasing test temperature. This indicated that once the microstructures of the Fe<span class="hlt">Al</span>-cermets are optimized for wear resistance, these materials might make promising candidates for high-temperature wear applicati2048</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/759181"><span id="translatedtitle">Erosion resistance of Fe<span class="hlt">Al</span>-TiB{sub 2} and Fe<span class="hlt">Al</span>-WC at room and elevated temperatures</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Alman, D.E.; Tylczak, J.H.; Hawk, J.A.</p> <p>2000-01-01</p> <p>The resistance of Fe<span class="hlt">Al</span>-40%TiB{sub 2} and Fe<span class="hlt">Al</span>-80%WC cermets to solid particle erosion at 25, 180, 500 and 700 C was evaluated and compared to the behavior of WC-6%Co (Co-90%WC) cemented carbides. Even though the WC-Co contained a higher volume fraction of the hard phase, the erosion rates of the Fe<span class="hlt">Al</span>-cermets were similar in magnitude to the erosion rates of the WC-Co. However, the erosion rates of the Fe<span class="hlt">Al</span>-cermets either were constant (Fe<span class="hlt">Al</span>-TiB{sub 2}) or decreased (Fe<span class="hlt">Al</span>-WC) with increasing test temperature; whereas, the erosion rates of the WC-Co cemented carbides increased with increasing test temperature. This indicated that once the microstructures of the Fe<span class="hlt">Al</span>-cermets are optimized for wear resistance, these materials might make promising candidates for high-temperature wear applications.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PUBMED&redirectUrl=http://www.ncbi.nlm.nih.gov/pubmed/23421276"><span id="translatedtitle">Shock induced reaction of Ni/<span class="hlt">Al</span> nanopowder mixture.</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pubmed">PubMed</a></p> <p>Meng, C M; Wei, J J; Chen, Q Y</p> <p>2012-11-01</p> <p>Nanopowder Ni/<span class="hlt">Al</span> mixture (mixed in <span class="hlt">Al</span>:Ni = 2:1 stoichiometry) was shock compressed by employing single and two-stage light gas gun. The particle size of <span class="hlt">Al</span> and Ni are 100-200 nm and 50-70 nm respectively, morphologies of <span class="hlt">Al</span> and Ni are sphere like either. Recovered product was characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis. According to the XRD spectrum, the mixed powder undergo complete reaction under shock compression, reaction product consist of Ni2<span class="hlt">Al</span>3, Ni<span class="hlt">Al</span> and corundum structure <span class="hlt">Al</span>2O3 compound. Grain size of Ni-<span class="hlt">Al</span> compound is less than 100 nm. With the shock pressure increasing, the ratio of Ni2<span class="hlt">Al</span>3 decreased obviously. The corundum crystal size is 400-500 nm according to the SEM observation. The results of shock recovery experiments and analysis show that the threshold pressure for reaction of nano size powder Ni/<span class="hlt">Al</span> mixture is much less than that of micro size powder. PMID:23421276</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=PMC&redirectUrl=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=3873619"><span id="translatedtitle">Familial clustering of <span class="hlt">ALS</span> in a population-based resource</span></a></p> <p><a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?DB=pmc">PubMed Central</a></p> <p>Gibson, Summer B.; Figueroa, Karla P.; Bromberg, Mark B.; Cannon-Albright, Lisa</p> <p>2014-01-01</p> <p>Objective: To determine the extent of an inherited contribution to amyotrophic lateral sclerosis (<span class="hlt">ALS</span>) mortality. Methods: Death certificates (DCs) from 1904 to 2009 were analyzed from patients with at least 3 generations recorded in the Utah Population Database, a genealogic and medical database of more than 2 million Utah residents. Among probands whose DCs listed <span class="hlt">ALS</span>, the relative risk (RR) of death with <span class="hlt">ALS</span> was determined among spouses and first- through fifth-degree relatives, using birth year-, sex-, and birthplace-matched cohorts. Results: Eight hundred seventy-three patients with <span class="hlt">ALS</span> met the inclusion criteria. Among 3,531 deceased first-degree relatives of probands, the RR of dying with <span class="hlt">ALS</span> was increased compared with control cohorts (RR = 4.91, 95% confidence interval 3.36, 6.94). The RR of dying with <span class="hlt">ALS</span> was also increased among 9,386 deceased second-degree relatives (RR = 2.85, 95% confidence interval 2.06, 3.84). The RR of dying with <span class="hlt">ALS</span> was not increased among third- through fifth-degree relatives. More affected first-degree relatives were male (p = 0.014). No cases of conjugal <span class="hlt">ALS</span> were observed. Conclusions: This study is suggestive of familial clustering in excess of expected for <span class="hlt">ALS</span>. Our results confirm the results of prior studies of familial <span class="hlt">ALS</span>, suggesting applicability of our findings to other mixed European populations. Furthermore, this work expands on previous studies by quantifying the RR of <span class="hlt">ALS</span> among more distant relatives. The use of mortality data obtained from DCs reduces the ascertainment and recall bias of many previous studies. Finally, the excess of <span class="hlt">ALS</span> among second-degree relatives and lack of conjugal <span class="hlt">ALS</span> are strongly supportive of a genetic contribution. PMID:24306004</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2005JSSCh.178..680H"><span id="translatedtitle">The <span class="hlt">Al</span> 3+ stabilized phase Li 3-3x<span class="hlt">Al</span> xBO 3</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>He, M.; Okudera, H.; Fleig, J.; Simon, A.; Chen, X. L.; Maier, J.</p> <p>2005-03-01</p> <p>The structure of an <span class="hlt">Al</span> 3+ stabilized phase Li 3-3x<span class="hlt">Al</span> xBO 3 ( x?0.18) was determined by means of single crystal X-ray diffraction. This phase crystallizes in space group P6 122 or P6 522, with lattice constants a=4.9019(5) Å, c=17.538(2) Å and Z=6. The unit cell consists of six layers of BO 3 groups with Li + cations distributing statistically on five crystallographic sites, none of which is fully occupied. The Li sites are close to each other and a three-dimensional network results when Li sites only within 1.65 Å are connected. Significant ionic conductivity was observed for this phase.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/1981JAP....52.2994L"><span id="translatedtitle">Reactive ion etching induced corrosion of <span class="hlt">Al</span> and <span class="hlt">Al</span>-Cu films</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lee, Wen-Yaung; Eldridge, J. M.; Schwartz, G. C.</p> <p>1981-04-01</p> <p>Aluminum and <span class="hlt">Al</span>-Cu conductor lines etched with a Cl containing plasma in low-pressure diode systems corroded rapidly upon atmospheric exposure. The mechanisms underlying this corrosion problem were investigated using Auger electron and x-ray photoelectron spectroscopies. Reactive ion etching resulted in a nonprotective oxide layer and thus rendered the etched samples more susceptible to atmospheric corrosion. Factors contributing to the increased reactivity of etched samples includes C and Cl contamination, radiation damage, and for <span class="hlt">Al</span>-Cu alloys, Cu enrichment. A thermal oxidation treatment at temperatures of ˜300-350 °C and l atm O2 pressure for ?30-45 min was found to be effective in restoring the protective oxide layer and thus improving the corrosion resistance of etched samples.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/20636969"><span id="translatedtitle">Overdamped Nb/<span class="hlt">Al-Al</span>O{sub x}/Nb Josephson junctions</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Lacquaniti, V.; Cagliero, C.; Maggi, S.; Steni, R. [Thin Films Department, IEN 'G. Ferraris', Strada delle Cacce 91, I-10135, Torino (Italy)</p> <p>2005-01-24</p> <p>We report the fabrication and characterization of overdamped Nb/<span class="hlt">Al-Al</span>O{sub x}/Nb superconductor-insulator-superconductor Josephson junction whose fabrication process derives from that of the well-known hysteretic junctions. These junctions are an intermediate state between the superconductor-normal metal-superconductor and the superconductor-insulator-superconductor Josephson junctions. Stable and reproducible nonhysteretic current-voltage characteristics are obtained with a proper choice of the fabrication parameters. We have measured critical current densities J{sub C} from 10{sup 3} up to 2x10{sup 4} A/cm{sup 2}, with characteristic voltages from 80 to nearly 450 {mu}V. The junctions are stable against time and repeated thermal cycling.</p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li class="active"><span>24</span></li> <li><a href="#" onclick='return showDiv("page_25");'>25</a></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_24 --> <div id="page_25" class="hiddenDiv"> <div class="row"> <div class="col-sm-12"> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li class="active"><span>25</span></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div> </div> <div class="row"> <div class="col-sm-12"> <ol class="result-class" start="481"> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/328274"><span id="translatedtitle">Internal stress superplasticity in directionally solidified <span class="hlt">Al-Al</span>{sub 3}Ni eutectic composite</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kitazono, K. [Inst. of Space and Astronautical Science, Sagamihara, Kanagawa (Japan)] [Inst. of Space and Astronautical Science, Sagamihara, Kanagawa (Japan); [Univ. of Tokyo, Hongo, Bunkyo (Japan). Dept. of Materials Science; Sato, E. [Inst. of Space and Astronautical Science, Sagamihara, Kanagawa (Japan)] [Inst. of Space and Astronautical Science, Sagamihara, Kanagawa (Japan)</p> <p>1998-12-11</p> <p>Thermal cycling creep behavior in fiber-reinforced composites was investigated using a directionally solidified <span class="hlt">Al-Al</span>{sub 3}Ni eutectic composite. A superplastic elongation of 120% was obtained during a thermal cycling tensile creep test. Compression creep tests were performed under an external stress applied either parallel or perpendicular to the growth direction. The average strain rates for the two directions exhibited the characteristics of internal stress superplasticity: those at low stresses were much higher than the corresponding isothermal creep rates and were proportional to the applied stress. In the case of transverse loading, the thermal cycling creep rate was explained quantitatively using the previously reported internal stress superplasticity model for particle-dispersed composite. In the case of longitudinal loading, it was much lower than that predicted using the model because of the difference in the stress state and the relaxation process. However, thermal cycling creep had very low activation energy, which is a unique characteristic of internal stress superplasticity.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2006cosp...36.2646H"><span id="translatedtitle">Influence of microgravity on solidification behavior of <span class="hlt">Al-Al</span>3Ni eutectic alloy</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Huang, Q.; Luo, X.-H.; Li, Y.-Y.</p> <p></p> <p>Directional solidification experiments of <span class="hlt">Al-Al</span> 3 Ni eutectic alloy were performed in the Multi-functional Crystal Growing Furnace on board the unmanned Chinese Shenzhou spacecraft and in the laboratory on earth respectively to compare their solidification behavior under microgravity and normal gravity conditions The specimens gained were investigated using metallographic SEM XRD and Image analysis techniques Many significant differences both macroscopic and microscopic were observed between the specimens solidified in space and on the earth Especially the mean inter-fiber spacing and spacing distribution range obtained under microgravity were found larger than those obtained under normal gravity An off-eutectic theory was tried to explain those differences and achieved a good agreement In combination with the analyses on reported experimental results in other works it could be deduced that the change of inter-fibre spacing of eutectic alloy with microgravity is determined by the alloy system</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2007MMTA...38.1833G"><span id="translatedtitle">Defect Band Characteristics in Mg-<span class="hlt">Al</span> and <span class="hlt">Al</span>-Si High-Pressure Die Castings</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Gourlay, C. M.; Laukli, H. I.; Dahle, A. K.</p> <p>2007-08-01</p> <p>Bands of positive macrosegregation and porosity commonly follow the surface contour of components produced by high-pressure die casting (HPDC). In this article, <span class="hlt">Al</span> alloy <span class="hlt">Al</span>Si7Mg and Mg alloys AZ91 and AM60 were cast into tensile test bars using cold-chamber (cc) HPDC. Microstructural characterization revealed that externally solidified crystals (ESCs) are not necessary for defect band formation, and that defect bands can form both near to and relatively far from any surface layer of different microstructure. The defect bands were 140 to 240 ?m thick. In addition to defect-band-related macrosegregation, the castings also contained inverse segregation and surface segregation. Defect bands are shown to have the characteristics of the dilatant shear bands reported in past rheology studies, indicating that defect bands form due to strain localization in partially solid material during the HPDC process.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/servlets/purl/839709"><span id="translatedtitle">High Performance Polarized Electron Photocathodes Based on InGa<span class="hlt">AlAs/Al</span>GaAs Superlattices</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Mamaev, Yu.</p> <p>2004-12-10</p> <p>Highly efficient emitters of polarized electrons based on the In<span class="hlt">AlGaAs/Al</span>GaAs superlattice give an optimistic prognosis to explorations of such structures as the sources for accelerators. A new set of these SL structures with minimized conduction band offset was designed and recently tested. A new technology of surface protection in MBE growth leads to a significantly reduced heat-cleaning temperature. At these lowered cleaning temperatures, the thermal degradation of the working structure parameters is avoided. As a result a polarization P of up to 91% at corresponding quantum efficiency (QE) of 0.3% was achieved at room temperature. A 50% increase in the photocathode lifetime has been achieved with Sb coverage.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2007PhyC..451...19Y"><span id="translatedtitle">Missing superconductivity in Ba<span class="hlt">Al</span>Si with the <span class="hlt">Al</span>B 2 type structure</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Yamanaka, Shoji; Otsuki, Teruyoshi; Ide, Takayuki; Fukuoka, Hiroshi; Kumashiro, Ryotaro; Rachi, Takeshi; Tanigaki, Katsumi; Guo, FangZhun; Kobayashi, Keisuke</p> <p>2007-01-01</p> <p>The solid solutions Ba<span class="hlt">Al</span> 1- xSi 1+ x (0 ? x ? 0.5) were prepared. The compound with the stoichiometric composition ( x = 0) did not show superconductivity as reported by other investigators, but the solid solutions with x > 0 became superconductors with a transition temperature Tc = 2.8 K. The comparison of the lattice parameters with those of the other isotypic ternary superconductors MAlSi (M = Ca, Sr) suggested that the superconductivity could be related to the lattice parameter within the (<span class="hlt">Al</span>Si) plane rather than the interlayer spacing. The band structures near the Fermi level of MAlSi (M = Ca, Sr, Ba) were measured using soft X-ray photoelectron spectroscopy, which were in good agreement with the calculated ones, confirming that the contribution of the d orbitals of the alkaline-earth metals were predominant in the conduction bands.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2007OExpr..15.9152L"><span id="translatedtitle"><span class="hlt">Al</span>F3 thin films deposited by reactive magnetron sputtering with <span class="hlt">Al</span> target</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Lee, Cheng-Chung; Liao, Bo-Huei; Liu, Ming-Chung</p> <p>2007-07-01</p> <p>Aluminum fluoride thin films have been deposited by magnetron sputtering of an aluminum target with CF4 , and CF4 mixed O2 as the working gas onto a room temperature substrate. The quality of the coated <span class="hlt">Al</span>F3 film applied with 25W sputtering power using CF4 mixed 5% O2 was better than for films deposited using conventional methods. The extinction coefficient of <span class="hlt">Al</span>F3 was smaller than 6.0×10-4 in the wavelength range of 190nm to 250nm. Single layer antireflection coatings on both sides of a fused silica substrate increased the transmittance from less than 91% for a bare substrate to higher than 96% in the wavelength range between 190nm to 250nm.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2008E%26PSL.272..353J"><span id="translatedtitle">26<span class="hlt">Al</span>- 26Mg and 207Pb- 206Pb systematics of Allende CAIs: Canonical solar initial 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span> ratio reinstated</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Jacobsen, Benjamin; Yin, Qing-zhu; Moynier, Frederic; Amelin, Yuri; Krot, Alexander N.; Nagashima, Kazuhide; Hutcheon, Ian D.; Palme, Herbert</p> <p>2008-07-01</p> <p>The precise knowledge of the initial 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span> ratio [( 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span>) 0] is crucial if we are to use the very first solid objects formed in our Solar System, calcium-aluminum-rich inclusions (CAIs) as the "time zero" age-anchor and guide future work with other short-lived radio-chronometers in the early Solar System, as well as determining the inventory of heat budgets from radioactivities for early planetary differentiation. New high-precision multi-collector inductively-coupled plasma mass spectrometry (MC-ICP-MS) measurements of 27<span class="hlt">Al</span>/ 24Mg ratios and Mg-isotopic compositions of nine whole-rock CAIs (six mineralogically characterized fragments and three micro-drilled inclusions) from the CV carbonaceous chondrite, Allende yield a well-defined 26<span class="hlt">Al</span>- 26Mg fossil isochron with an ( 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span>) 0 of (5.23 ± 0.13) × 10 - 5 . Internal mineral isochrons obtained for three of these CAIs ( A44A, AJEF, and A43) are consistent with the whole-rock CAI isochron. The mineral isochron of AJEF with ( 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span>) 0 = (4.96 ± 0.25) × 10 - 5 , anchored to our precisely determined absolute 207Pb- 206Pb age of 4567.60 ± 0.36 Ma for the same mineral separates, reinstate the "canonical" ( 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span>) 0 of 5 × 10 - 5 for the early Solar System. The uncertainty in ( 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span>) 0 corresponds to a maximum time span of ± 20 Ka (thousand years), suggesting that the Allende CAI formation events were culminated within this time span. Although all Allende CAIs studied experienced multistage formation history, including melting and evaporation in the solar nebula and post-crystallization alteration likely on the asteroidal parent body, the 26<span class="hlt">Al</span>- 26Mg and U-Pb-isotopic systematics of the mineral separates and bulk CAIs behaved largely as closed-system since their formation. Our data do not support the "supra-canonical" 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span> ratio of individual minerals or their mixtures in CV CAIs, suggesting that the supra-canonical 26<span class="hlt">Al</span>/ 27<span class="hlt">Al</span> ratio in the CV CAIs may have resulted from post-crystallization inter-mineral redistribution of Mg isotopes within an individual inclusion. This redistribution must be volumetrically minor in order to satisfy the mass balance of the precisely defined bulk CAI and bulk mineral data obtained by MC-ICP-MS. The radiogenic 208Pb*/ 206Pb* ratio obtained as a by-product from the Pb-Pb age dating is used to estimate time-integrated 232Th/ 238U ratio ( ? value) of CAIs. Limited ? variations among the minerals within a single CAI, contrasted by much larger variations among the bulk CAIs, suggest Th/U fractionation occurred prior to crystallization of igneous CAIs. If interpreted as primordial heterogeneity, the ? value can be used to calculate the mean age of the interstellar dust from which the CAIs condensed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/50379737"><span id="translatedtitle">Ultraviolet and blue emission properties of Tm doped <span class="hlt">Al</span>GaN and <span class="hlt">Al</span>N</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Ei Ei Nyein; U. Hommerich; J. M. Zavada; D. S. Lee; A. J. Steckl; J. Y. Lin; H. X. Jiang</p> <p>2004-01-01</p> <p>We report on the ultraviolet (UV) and blue emission properties of Tm doped <span class="hlt">Al</span>GaN\\/AIN thin films under above- and below bandgap excitation. UV (\\/spl sim\\/300-350 nm) and blue (\\/spl sim\\/465 nm) emission lines of Tm\\/sup 3+\\/ ions are of interest for potential applications in chemical\\/biological sensing, full color displays, and solid-state lightening.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/52147470"><span id="translatedtitle">Planar debris in plastically deformed <span class="hlt">Al</span>-rich gamma-Ti<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Fabienne Gregori</p> <p>1999-01-01</p> <p>Transmission electron microscope images of aluminium-rich L10 Ti<span class="hlt">Al</span> samples deformed up to 400 C exhibit faint fringes spread uninterruptedly all over the thin foils. At variance from the fringe systems usually associated with stacking faults and\\/or antiphase boundaries, these faint striations show no clear spatial limitations by intersections with free surfaces or else by dislocations. The striation contrast is related</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/18800931"><span id="translatedtitle">Planar debris in plastically deformed <span class="hlt">Al</span>-rich ?-Ti<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Fabienne. Grégori; Patrick. Veyssière</p> <p>1999-01-01</p> <p>Transmission electron microscope images of aluminium-rich L10 Ti<span class="hlt">Al</span> samples deformed up to 400°C exhibit faint fringes spread uninterruptedly all over the thin foils. At variance from the fringe systems usually associated with stacking faults and\\/or antiphase boundaries, these faint striations show no clear spatial limitations by intersections with free surfaces or else by dislocations. The striation contrast is related to</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/41066347"><span id="translatedtitle">Combustion synthesis of Ti<span class="hlt">Al</span>-matrix composites in the Ti-<span class="hlt">Al</span>-BN system</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>H. Mabuchi; H. Tsuda; Y. Nakayama</p> <p>1995-01-01</p> <p>The intermetallic compound Ti<span class="hlt">Al</span> has attracted much attention for its potential use as a structural high-temperature material. However, its use has been limited because of its negligible low-temperature ductility and fracture toughness and low high-temperature strength and creep. To improve these properties, recently this compound has been made as a composite material containing a secondary phase such as boride, carbide,</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/50633425"><span id="translatedtitle">Crytanalysis and Improvement on Chang et <span class="hlt">al.'s</span> Signature Scheme</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Qing-Long Wang; Zhen Han; Xiu-Hua Geng</p> <p>2007-01-01</p> <p>In 2004, Chang's et <span class="hlt">al</span>. presented a digital signature scheme without using one-way hash function and message redundancy schemes. They claimed their scheme do not suffer from some forgery attacks such as Shieh's scheme. However, Fu (2005) and Zhang (http:\\/\\/eprint.iacr.org\\/2004\\/213.pdf) proposed several forgery attacks on it and showed that message redundancy schemes may be still needed in order to resist</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/54952000"><span id="translatedtitle">The Li<span class="hlt">Al\\/NaAl</span>Cl4\\/MoCl5 thermal battery</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>R. A. Marsh; D. M. Ryan; J. C. Nardi</p> <p>1978-01-01</p> <p>The paper describes the development of a new thermal battery which uses aluminum or a lithium-aluminum alloy as the anode, a mixture of Na<span class="hlt">Al</span>Cl4 and a commercial silica powder as the anolyte, and a mixture of anolyte, MoCl5, and graphite as the cathode. Characteristics of several single cells with different ratios of components are reported. Both Zr\\/BaCrO4 and Fe\\/KClO4 were</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/1003147"><span id="translatedtitle">Deformation and Phase Transformations During Cyclic Oxidation of Ni-<span class="hlt">Al</span> and Ni-Pt-<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Pint, Bruce A [ORNL; Speakman, Scott A [ORNL; Rawn, Claudia J [ORNL; Zhang, Ying [Tennessee Technological University</p> <p>2006-01-01</p> <p>The reversible high-temperature {gamma}' to {beta} phase transformation may be critical to explaining the unusual high-temperature oxidation behavior of (Ni,Pt)<span class="hlt">Al</span> alloys and coatings. During high-temperature, high-frequency (1 h) cyclic oxidation in dry, flowing O{sub 2}, unprecedented macroscopic deformation was observed in two-phase ({gamma}'+{beta}) cast specimens of Hf-doped Ni-<span class="hlt">Al</span> at 1,150 C and Hf-doped Ni-Pt-<span class="hlt">Al</span> at 1,100 and 1,150 C, Outside of this two-phase field or when the cycle frequency was decreased to 100h, no deformation was observed. Using high-temperature x-ray diffraction in an inert environment, the {beta}-to-{gamma}' phase ratio was observed to increase above 1,000 C, causing a 2.5% volume change. The addition of platinum appeared to lower the transformation temperature consistent with the deformation observed in castalloys and rumpling of simple and platinum-modified aluminide coatings.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/474122"><span id="translatedtitle">A study on the subgrain superplasticity of extruded <span class="hlt">Al-Al</span>{sub 3}Ni eutectic alloy</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Uan, J.Y.; Chen, L.H.; Lui, T.S.</p> <p>1997-02-01</p> <p>A directionally solidified <span class="hlt">Al-Al</span>{sub 3}Ni eutectic alloy was extruded to obtain micron-size subgrains with [111] fiber texture. The extrusion temperature was varied to have different distributions of the <span class="hlt">Al</span>{sub 3}Ni eutectic particles. Choosing the fiber axis as the loading axis, the tensile test results at 500 C indicate that the elongation is concave downward and strain-rate dependent. Reducing the number of intragranular particles increases the maximum elongation as well as the strain rate of maximum elongation. With the particles residing only intergranularly in the as-extruded state, the maximum elongation, which occurs under the initial strain rate of 6.3 {times} 10{sup {minus}3} s{sup {minus}1}, is about 300 pct. This subgrain superplasticity is associated with low strain-rate sensitivity but high resistance against strain softening. The fiber texture is always retained, and the microstructure reveals slip of long parallel dislocations. If intragranular particles are also present in the as-extruded state, the occurrence of dislocation tangling and dynamic recovery will give rise to early onset of strain softening and inferior ductility.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/329051"><span id="translatedtitle">Microstructure and microsegregation in <span class="hlt">Al</span>-rich <span class="hlt">Al</span>-Cu-Mg alloys</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Xie, F.Y.; Kraft, T.; Zuo, Y.; Moon, C.H.; Chang, Y.A. [Univ. of Wisconsin, Madison, WI (United States). Dept. of Materials Science and Engineering] [Univ. of Wisconsin, Madison, WI (United States). Dept. of Materials Science and Engineering</p> <p>1999-01-15</p> <p>Microstructure and microsegregation in two directionally solidified <span class="hlt">Al</span> alloys, <span class="hlt">Al</span>-3.9Cu-0.9Mg and <span class="hlt">Al</span>-15Cu-1Mg (in wt%), were investigated for cooling rates between 0.78 and 0.039 K/s. Transverse and longitudinal sections were examined to exhibit dendritic microstructures. Fractions of solids formed were determined using quantitative image analysis and solute redistribution in the primary phase was determined using area scans. The model employed to calculate microsegregation is based on the Scheil model but including solid-state diffusion, dendrite arm coarsening and undercooling of the dendrite tip and the formation of eutectic. The model-calculated results were found to be in good agreement with the experimentally determined concentration distributions in the primary {alpha} phase and the amounts of phases formed. It was found that the dendrite morphology was best described by a cylindrical arm geometry and that the accuracy of the phase diagram could have a significant influence on the microsegregation predictions. For the alloy with low copper content, two types of embedded droplets were observed.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-STC&redirectUrl=http://www.osti.gov/scitech/biblio/20634446"><span id="translatedtitle"><span class="hlt">Al</span>GaN-based ultraviolet light-emitting diodes grown on <span class="hlt">Al</span>N epilayers</span></a></p> <p><a target="_blank" href="http://www.osti.gov/scitech">SciTech Connect</a></p> <p>Kim, K.H.; Fan, Z.Y.; Khizar, M.; Nakarmi, M.L.; Lin, J.Y.; Jiang, H.X. [Department of Physics, Kansas State University, Manhattan, Kansas 66506-2601 (United States)</p> <p>2004-11-15</p> <p><span class="hlt">Al</span>GaN-based deep-ultraviolet light-emitting diode (LED) structures, which radiate light at 305 and 290 nm, have been grown on sapphire substrates using an <span class="hlt">Al</span>N epilayer template. The fabricated devices have a circular geometry to enhance current spreading and light extraction. Circular UV LEDs of different sizes have been characterized. It was found that smaller disk LEDs had higher saturation optical power densities but lower optical powers than the larger devices. This trade-off between power and power density is a result of a compromise between electrical and thermal resistance, as well as the current crowding effect (which is due to the low electrical conductivity of high aluminum composition n- and p-<span class="hlt">Al</span>GaN layers). Disk UV LEDs should thus have a moderate size to best utilize both total optical power and power density. For 0.85 mmx0.85 mm interdigitated LEDs, a saturation optical power of 2.9 mW (1.8 mW) at 305 nm (290 nm) was also obtained under dc operation.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2007P%26SS...55..859A"><span id="translatedtitle">Studies on Uruq <span class="hlt">al</span> Hadd meteorite</span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Al-Rawas, A. D.; Gismelseed, A. M.; Yousif, A. A.; Elzain, M. E.; Worthing, M. A.; Al-Kathiri, A.; Gnos, E.; Hofmann, B. A.; Steele, D. A.</p> <p>2007-05-01</p> <p>Uruq <span class="hlt">al</span> Hadd (UaH02) meteorite is found in the southwest of Oman close to the border with Yemen. Mössbauer spectroscopy has been used to assess the mineralogy of iron-bearing phases in this meteorite, supported by X-ray diffraction and electron-probe microanalysis (EPMA). Mössbauer spectra measured at 295 and 78 K exhibit paramagnetic doublets superimposed on magnetic sextets. The doublets are assigned to the silicate minerals olivine and pyroxene and the magnetic sextets reveal the presence of at least four magnetic phases: troilite (Fe 49.2S 50.8), kamacite (Fe 92.2Ni 7.8), taenite (FeNi), iron oxides and oxy-hydroxides. Both iron oxides and oxy-hydroxides are terrestrial alteration products. Weathering is not pervasive suggesting a relatively young terrestrial age. The mole percentages of fayalite in olivine and ferrosilite in pyroxene determined by EPMA, classifies the meteorite as an H3 chondrite of W1 weathering stage.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=NASAADS&redirectUrl=http://adsabs.harvard.edu/abs/2015NatPh..11..321A"><span id="translatedtitle">Modulated magnetism in PrPt<span class="hlt">Al</span></span></a></p> <p><a target="_blank" href="http://adsabs.harvard.edu/abstract_service.html">NASA Astrophysics Data System (ADS)</a></p> <p>Abdul-Jabbar, Gino; Sokolov, Dmitry A.; O’Neill, Christopher D.; Stock, Christopher; Wermeille, Didier; Demmel, Franz; Krüger, Frank; Green, Andrew G.; Lévy-Bertrand, Florence; Grenier, Béatrice; Huxley, Andrew D.</p> <p>2015-04-01</p> <p>The transition between paramagnetism and ferromagnetism is the paradigm for a continuous phase transition at finite temperature. When such a transition is tuned to zero temperature in clean materials, the growth of low-energy zero-point fluctuations potentially drives an array of phenomena, including the formation of novel states such as non-conventional superconductivity. Experimentally, the growth of the fluctuations, however, is curtailed and the transition becomes discontinuous as its temperature is reduced. This is understood to arise from non-analytic corrections to the free energy that always occur. In a recent theory, changes of the excitation spectrum are self-consistently considered alongside the ground state. This analysis reveals that a transition to a new state may be an alternative outcome. As the excitation spectrum (the `disorder’) is pivotal to promoting the new `order’ this mechanism is referred to as `order by disorder’. Here, we report the discovery of modulated order in PrPt<span class="hlt">Al</span>, consistent with complex spirals, at the boundary between paramagnetism and ferromagnetism, giving the first clear experimental realization of such a state.</p> </li> <li> <p><a target="resultTitleLink" href="http://www.science.gov/scigov/desktop/en/ostiblue/service/link/track?type=RESULT&searchId=topic-pages&collectionCode=SCIGOV-MAS&redirectUrl=http://academic.research.microsoft.com/Publication/40731864"><span id="translatedtitle">Lithostratigraphy and planktonic foraminiferal biostratigraphy of the late Eocene-Middle Miocene sequence in the area between Wadi <span class="hlt">Al</span> Zeitun and Wadi <span class="hlt">Al</span> Rahib, <span class="hlt">Al</span> Bardia area, northeast Libya</span></a></p> <p><a target="_blank" href="http://academic.research.microsoft.com/">Microsoft Academic Search </a></p> <p>Mostafa M. Imam</p> <p>1999-01-01</p> <p>The present study deals with the lithostratigraphy and planktonic foraminiferal biostratigraphy of the Late Eocene-Middle Miocene sequence in the <span class="hlt">Al</span> Bardia area, northeast Libya. The lithostratigraphical studies carried out on three stratigraphical surface sections, namely Wade <span class="hlt">Al</span> Rahib, Wadi <span class="hlt">Al</span> Hash and Wadi <span class="hlt">Al</span> Zeitun, led to the recognition of three rock units from base to top: (1) the <span class="hlt">Al</span></p> </li> </ol> <div class="pull-right"> <ul class="pagination"> <li><a href="#" onclick='return showDiv("page_1");'>«</a></li> <li><a href="#" onclick='return showDiv("page_21");'>21</a></li> <li><a href="#" onclick='return showDiv("page_22");'>22</a></li> <li><a href="#" onclick='return showDiv("page_23");'>23</a></li> <li><a href="#" onclick='return showDiv("page_24");'>24</a></li> <li class="active"><span>25</span></li> <li><a href="#" onclick='return showDiv("page_25");'>»</a></li> </ul> </div> </div><!-- col-sm-12 --> </div><!-- row --> </div><!-- page_25 --> <center> <div class="footer-extlink text-muted"><small>Some links on this page may take you to non-federal websites. 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