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1

Luminescence of phosphorus containing oxide materials: Crystalline SiO2-P and 3P2O5?7SiO2; CaO?P2O5; SrO?P2O5 glasses  

NASA Astrophysics Data System (ADS)

Luminescence of phosphate glasses such as CaO?P2O5 and SrO?P2O5 is compared with that of phosphorus doped crystalline ?-quartz and phosphosilicate glass with content 3P2O5?7SiO2. Water & OH groups are found by IR spectra in these materials. The spectrum of luminescence contains many bands in the range 1.5 - 5.5 eV. The luminescence bands in UV range at 4.5-5 eV are similar in those materials. Decay duration in exponential approximation manifests a time constant about 37 ns. Also a component in ?s range was detected. PL band of ?s component is shifted to low energy with respect to that of ˜37 ns component. This shift is about 0.6 eV. It is explained as singlet-triplet splitting of excited state. Below 14 K increase of luminescence kinetics duration in ?s range was observed and it was ascribed to zero magnetic field splitting of triplet excited state of the center. Yellow-red luminescence was induced by irradiation in phosphorus doped crystalline ?-quartz, phosphosilicate glasses. The yellowl uminescence contains two bands at 600 and 740 nm. Their decay is similar under 193 nm laser and may be fitted with the first order fractal kinetics or stretched exponent. Thermally stimulated luminescence contains only band at 600 nm. The 248 nm laser excites luminescence at 740 nm according to intra center process with decay time constant about 4 ms at 9 K. Both type of luminescence UV and yellow were ascribed to different defects containing phosphorus. P-doped ?-quartz sample heated to 550 co become opalescent. Ir spectra related to water & OH groups are changed. Photoluminescence intensity of all three bands, UV (250 nm), yellow (600 nm) and red (740 nm) strongly diminished and disappeared after heating to 660 C°. Radiation induced red luminescence of non-bridging oxygen luminescence center (NBO) appeared in crystal after heat treatment. We had observed a crystalline version of this center (l. Skuja et al, Nuclear Instruments and Methods in Physics Research B 286,159-168 (2012)). Effect of heat treatment explained as sedimentation of phosphorus in some state. Keeping of treated sample at 450-500 C° leads to partial revival of ability to create yellow luminescence center under irradiation.

Trukhin, A. N.; Smits, K.; Jansons, J.; Berzins, D.; Chikvaidze, G.; Griscom, D. L.

2014-10-01

2

P-T phase diagram and structural transformations of molten P2O5 under pressure  

NASA Astrophysics Data System (ADS)

The P2O5 compound is an archetypical glass-forming oxide with a record high hygroscopicity, which makes its study extremely difficult. We present the in situ x-ray diffraction study of the pressure-temperature phase diagram of P2O5 and, particularly, of the liquid P2O5 structure under high pressure up to 10 GPa. Additionally, quenching from the melt has been used to extend the melting curve up to 15 GPa. We found that structural transformation in the liquid P2O5 under pressure is unique and includes three stages: first, the disappearance of the intermediate range order of the melt together with a slow increase in the average first-coordination number (P-O and O-P neighbors) up to 4 GPa; second, the "normal" compression almost without structural modification at higher pressures up to 8-9 GPa; and, finally, the abrupt change of the short-range order structure of the liquid with the jumplike increase at 9-10 GPa. The last stage correlates with the melting curve maximum (?1250 °C) at ?10 GPa and can be interpreted as a transformation to the liquid phase with entirely fivefold-coordinated phosphorus and twofold-coordinated oxygen atoms.

Brazhkin, V. V.; Katayama, Y.; Lyapin, A. G.; Saitoh, H.

2014-03-01

3

Borophosphate glasses of the ZnO–B 2O 3–P 2O 5 system  

Microsoft Academic Search

Twenty-eight samples of the ZnO–B2O3–P2O5 system were prepared by cooling the melt from 1230°C in the compositional series containing 30, 40, 50 and 60 mol.% of ZnO. A large glass-forming region was found at the phosphate side of the ternary system with homogeneous glasses containing up to 20–40 mol.% of B2O3. For these glasses, the density, ?, molar volume, VM,

L Koudelka

2000-01-01

4

The dielectric properties of TeO 2–P 2O 5 glasses  

Microsoft Academic Search

The dielectric constant and the tangent loss were measured for the TeO2–P2O5 glass system in the frequency range 0.1–10kHz at different isotherms. The dielectric constant and the tangent loss decreased with increasing frequency, while both of them increased with increasing temperature. The decrease of the dielectric constant with increasing frequency was attributed at low frequency to the contribution of all

M. M. Elkholy; L. M. Sharaf El-Deen

2000-01-01

5

New P2O5 and WO3 Doped Tellurite Glasses as Broadband Raman Gain Media  

Microsoft Academic Search

New tellurite-based glasses as broadband Raman gain media are developed to realize high performance fiber Raman amplifiers. These performances are achieved by WO3 and P2O5 doping in TeO2-BaO-SrO-Nb2O5 (TBSN) glass. The maximum gain coefficient obtained in the present study was ˜50 times that of silica glass for 532 nm excitation. The bandwidth (i.e., full width at half maximum) of these

Rajan Jose; Takenobu Suzuki; Yasutake Ohishi

2006-01-01

6

Critical Evaluation and Thermodynamic Optimization of the CaO-P2O5 System  

NASA Astrophysics Data System (ADS)

A critical evaluation and thermodynamic optimization of all available experimental data of the CaO-P2O5 system was performed to obtain a set of thermodynamic functions which can reproduce all available and reliable experimental phase diagram and thermodynamic data. The modified quasichemical model, which takes into account short range ordering, was employed to describe the thermodynamic properties of the liquid phase. Discrepancies observed in the Gibbs energy of formation of the compounds were resolved and phase diagram and thermodynamic data of all the solid and liquid phases were well reproduced within experimental errors limits including the sharp liquidus of Ca3(PO4)2.

Hudon, Pierre; Jung, In-Ho

2014-09-01

7

Influences of Gas Stream Conditions on Efficiency of Tritiated Moisture Collection with P2O5Desiccant and Isotope Effect  

Microsoft Academic Search

A method was proposed previously for collection and measurement of tritiated moisture in gas stream using P2O5-desiccant. Influences of the gas humidity, the gas flow rate and the distance between gas nozzle and P2O5-desiccant layer surface on the moisture collection efficiency have been examined through experiments, and the isotope effect on the collection has been investigated. The collection efficiency is

Kenji KOTOH; Katsuya MIURA; Yousuke KASHIO; Masabumi NISHIKAWA

1991-01-01

8

Effects of CaO/P2O5 ratio on the structure and elastic properties of SiO2-CaO-Na2O-P2O5 bioglasses.  

PubMed

The evolution of elastic properties and structure upon the change of CaO/P(2)O(5) ratio in SiO(2)-CaO-Na(2)O-P(2)O(5) glasses (45S5-derived and 55S4-derived) at ambient conditions has been studied by using both Brillouin and Raman spectroscopy coupled with X-ray diffraction. Under the same SiO(2)/Na(2)O ratio, it is found that a decrease in CaO/P(2)O(5) molar ratio has caused a more-polymerized silicate network via a net consumption of Q(0), Q(1), and Q(2) species yet enriching in Q(3) and Q(4) species. Brillouin experiments revealed that all the bulk, shear and Young's moduli of the glasses studied increases with the increase of CaO/P(2)O(5) molar ratio. The unexpected variation trend in shear modulus can be correlated to the contribution from cohesion, the less-polymerized phosphate Q species, and density. Compared to the 45S5-derived, the more-polymerized 55S4-deived glass has a lower bulk but slightly higher shear modulus at the given CaO/P(2)O(5) ratio. PMID:22109904

Lin, Chung-Cherng; Chen, Shih-Fan; Leung, Kak Si; Shen, Pouyan

2012-02-01

9

Crystallization kinetics and phase transformation in superionic lithium metaphosphate (Li(2)O-P(2)O(5)) glass system.  

PubMed

The ionic conductivity of mol% 50Li(2)O-50P(2)O(5) melt quenched glass shows an anomalous increase after its glass transition temperature (T(g)) around 590 K. On further increasing the temperature gradually, the conductivity decreases owing to the devitrification of Li(2)O-P(2)O(5) glass. The evolution of devitrified crystallites was evidenced by XRD patterns. To understand the devitrification process, isothermal and non-isothermal DSC studies have been carried out on mol% 50Li(2)O-50P(2)O(5) glass. T(g) as well as T(c) values are found to increase monotonically with increasing heating rates. Variation of T(g) as a function of heating rates has been investigated to evaluate the lower limiting temperature of T(g) and the activation energy for structural relaxation. Results of the DSC studies indicate (i) single-stage bulk crystallization of the glass, with DSC traces exhibiting a single [Formula: see text] transition, (ii) an order parameter (Avrami constant) of 2.8 ± 0.1, suggesting internal (bulk) crystallization of the glass, (iii) an activation energy for crystallization equal to 121.7 kJ mol(-1) and (iv) the activation energy for structural relaxation, E(g), to be 558.8 kJ mol(-1). The crystallization mechanism is closely associated with the JMA model and the experimental dataset have been fitted to a non-isothermal Avrami expression and the obtained parameters confirm the experimental results. PMID:21693908

Money, Benson K; Hariharan, K

2009-03-18

10

CaO--P2O5--Na2O-based sintering additives for hydroxyapatite (HAp) ceramics.  

PubMed

We have assessed the effect of CaO--P2O5--Na2O-based sintering additives on mechanical and biological properties of hydroxyapatite (HAp) ceramics. Five different compositions of sintering additives were selected and prepared by mixing of CaO, P2O5, and Na2CO3 powders. 2.5 wt% of each additive was combined with commercial HAp powder, separately, followed by ball milling, and sintering at 1250 degrees C and 1300 degrees C in a muffle furnace. Green and sintered densities of the compacts were analyzed for the influence of additives on densification of HAp. Phase analyses were carried out using an X-ray diffractometer. Vickers microhardness testing was used to evaluate hardness of sintered compacts of different compositions. A maximum microhardness of 4.6 (+/- 0.28) GPa was attained for a composition with 2.5 wt% addition of CaO:P2O5:Na2O in the ratio of 3:3:4. Results from mechanical property evaluation showed that some of these sintering additives improved failure strength of HAp under compressive loading. Maximum compressive strength was observed for samples with 2.5 wt% addition of CaO. Average failure strength for this set of samples was calculated to be 220 (+/- 50) MPa. Cytotoxicity, and cell attachment studies were carried out using a modified human osteoblast cell line called OPC-1. In vitro results showed that these compositions were non-toxic. Some sintering aids enhanced cell attachment and proliferation, which was revealed from SEM examination of the scaffolds seeded with OPC-1 cells. PMID:14741598

Kalita, S J; Bose, S; Hosick, H L; Bandyopadhyay, A

2004-05-01

11

Structure and properties of ZnO–B 2O 3–P 2O 5–TeO 2 glasses  

Microsoft Academic Search

Zinc borophosphate glasses doped with TeO2 were studied in the compositional series (100?x)[0.5ZnO–0.1B2O3–0.4P2O5]–xTeO2 in a broad concentration range of x=0–80mol% TeO2. The structure of the glasses was studied by Raman and IR spectroscopy and by 31P and 11B MAS NMR spectroscopy. According to the Raman and IR spectra, TeO2 is incorporated in the structural network in the form of TeO3,

Petr Mošner; Kate?ina Vosejpková; Ladislav Koudelka; Lionel Montagne; Bertrand Revel

2010-01-01

12

The Effect of Mechanical Milling Period on Conductivity of Li2O-TiO2-P2O5 System  

Microsoft Academic Search

One of the most important criteria in determining the best electrolyte is by obtaining good value of conductivity. In this research, Li2O-TiO2-P2O5 system will be prepared in order to find the optimum composition and heat treatment of the samples that gives good conductivity value. The effects of mechanical milling period on glass-ceramics electrolyte in the system Li2O-TiO2-P2O5 have been investigated

A. F. A. Faizal; S. R. Majid; R. H. Y. Subban

2009-01-01

13

Ion transport studies on Li2O-PbO-B2O3-P2O5 glass system  

NASA Astrophysics Data System (ADS)

Electrical conductivity of Li+ ion conducting borophosphate glass system with the general formula xLi2O -10PbO-(90-x) [55B2O3 + 45 P2O5] where x=20, 25, 30 and 35 has been carried out both as a function of temperature and frequency in the temperature range 303K to 503K and over frequencies 20 Hz to 12 MHz. The dc conductivities show Arrhenius behaviour while exhibiting composition dependence. Edc estimated from Arrhenius plots varies from 0.82 eV 0.88 eV. The ac conductivity behaviour has been analyzed using a single power law. The exponent `s' obtained from the power law fits is found to have values ranging from 0.45 to 0.84.in these glasses and shows moderate temperature dependence The stretched exponent ? also is seen to vary slightly with temperature. Scaling behaviour also has been carried out using the reduced plots of conductivity and frequency. The time-temperature superposition of data points is found to be satisfactory indicating that the ion transport mechanism remains the same in the entire range of temperatures and compositions studied. The results have been explained considering the borophosphate network and the role of Li2O as a glass modifier.

Muralidhara, R. S.; Anavekar, R. V.

2009-07-01

14

Hydroxyapatite/SiO(2)-CaO-P(2)O(5) glass materials: in vitro bioactivity and biocompatibility.  

PubMed

Materials obtained by the heat treatment of mixtures of hydroxyapatite (HA) and a silicate-based glass of the system SiO(2)-CaO-P(2)O(5) have been investigated. The influence of the glass content on the porosity, microstructure and on the constituent phases of the final materials was studied. The influence of these factors on the in vitro bioactive behaviour of the obtained materials was also investigated. In addition, an in vitro biocompatibility assay with osteoblastic-like cells was carried out. The addition of the glass to HA induced different solid-state reactions that yield the transformation of HA into alpha- and beta-tricalcium phosphate as well as the formation of silicon-containing phases (silicocarnotite or pseudowollastonite). In these mixtures an enhancement in the porosity, pore size and a heterogeneous microstructure was observed, compared with the precursors. As the sol gel glass content increased, the previous effects were higher. The materials showed the formation of an apatite-like layer on their surface when soaked in simulated body fluid, being faster in the sample with a higher content of glass. The formation of the new layer began in preferential zones in both samples, depending on the different reactivity of the crystalline phases formed. A synergistic effect between HA and glass was observed, showing in the mixtures a faster bioactive behaviour than in HA and glass themselves. The obtained materials allow a good attachment, spread and proliferation of the osteoblastic-like cells and no cytotoxic effect was observed. PMID:16701892

Padilla, S; Román, J; Sánchez-Salcedo, S; Vallet-Regí, M

2006-05-01

15

Structural and optical investigations on CdSe-doped SiO2-P2O5 sol-gel films  

NASA Astrophysics Data System (ADS)

SiO2-P2O5 films doped with CdSe were prepared and investigated for temperature sensor applications. The films were synthesized by the sol-gel method, the sol being spin coated on glass substrates. The sols were prepared from tetraethoxysilane and phosphoric acid as precursors for SiO2 and P2O5, respectively, together with ethanol and water as the reaction environment and the hydrolysis reagent, respectively. The films were deposited at three different rotation rates, for 5 days starting from the first day after the sol preparation and thermally treated at 200, 300, 350, 400 and 550 °C in order to investigate the changes of the optical and structural properties.

Iordanescu, C. R.; Vasiliu, I. C.; Elisa, M.; Feraru, I. D.

2013-11-01

16

Low temperature biosynthesis of Li2O-MgO-P2O5-TiO2 nanocrystalline glass with mesoporous structure exhibiting fast lithium ion conduction.  

PubMed

We demonstrate a biomimetic synthesis methodology that allows us to create Li2O-MgO-P2O5-TiO2 nanocrystalline glass with mesoporous structure at lower temperature. We design a 'nanocrystal-glass' configuration to build a nanoarchitecture by means of yeast cell templates self-assembly followed by the controlled in-situ biomineralization of materials on the cell wall. Electrochemically active nanocrystals are used as the lamellar building blocks of mesopores, and the semiconductive glass phase can act both as the 'glue' between nanocrystals and functionalized component. The Li2O-MgO-P2O5-TiO2 nanocrystalline glass exhibits outstanding thermal stability, high conductivity and wide potential window. This approach could be applied to many other multicomponent glass-ceramics to fabricate mesoporous conducting materials for solid-state lithium batteries. PMID:23827612

Du, Xiaoyong; He, Wen; Zhang, Xudong; Ma, Jinyun; Wang, Chonghai; Li, Chuanshan; Yue, Yuanzheng

2013-04-01

17

Friedel–Crafts acylation of aromatic compounds with carboxylic acids in the presence of P 2O 5\\/SiO 2 under heterogeneous conditions  

Microsoft Academic Search

A convenient and efficient procedure for the Friedel–Crafts acylation of aromatic compounds with carboxylic acids in the presence of P2O5\\/SiO2 is described. Both aromatic and aliphatic carboxylic acids reacted easily to afford the corresponding aromatic ketones. The use of non-toxic and inexpensive materials, simple and clean work-up, short reaction times and good yields of the products are the advantages of

Amin Zarei; Abdol R. Hajipour; Leila Khazdooz

2008-01-01

18

Radiation-induced color centers in ?-irradiated glasses in the Na 2 O-Nb 2 O 5 -P 2 O 5 system  

Microsoft Academic Search

The specific features of the induced optical absorption spectra of glasses in the 45Na2O xNb2O5 (55 ? x)P2O5 system with Nb2O5 contents x = 5, 10, 20, 25, 30, and 35 mol % are investigated as functions of the irradiation dose and the heat treatment time. The\\u000a spectra are decomposed into Gaussian components with the use of computer processing. It

E. V. Avdeeva; T. V. Bocharova; G. O. Karapetyan; A. M. Mironov

2006-01-01

19

Sol-gel-derived bioactive glass containing SiO2-MgO-CaO-P2O5 as an antibacterial scaffold.  

PubMed

Bioactive glass (BG) composites with a base of SiO2-Na2O-CaO-P2O5 are biocompatible biomaterials. The assessment of their abilities for medical applications has interested researchers. We produced a BG-containing SiO2-MgO-CaO-P2O5 by the sol-gel method. To determine the antibacterial effects, we analyzed the minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) properties of this product on three microorganisms, Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa, known causative agents for biofilm formation on implant surfaces. In addition, we performed the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay to study the cytotoxic effects of our composite on animal cells. Our results demonstrated that our BG product inhibited the growth of bacteria in a concentration-dependent manner without any cytotoxic effects. Therefore, our BG product can be utilized as an appropriate implant for treating bone and tooth defects. PMID:23138930

Fooladi, Abbas Ali Imani; Hosseini, Hamideh Mahmoodzadeh; Hafezi, Forough; Hosseinnejad, Fatemeh; Nourani, Mohammad Reza

2013-06-01

20

Effect of nitridation on the aqueous dissolution of Na2O-K2O-CaO-P2O5 metaphosphate glasses.  

PubMed

The use of oxynitride glasses is presented as an alternative for the preparation of bioresorbable phosphate glasses with a controlled dissolution rate. This work describes the design of oxynitride phosphate glasses within the systems of composition (50-x)Na(2)O·xCaO·50P(2)O(5) and (25-(x/2))Na(2)O·(25-(x/2))K(2)O·xCaO·50P(2)O(5) (x=5, 10, 15, 20 mol.%) throughout the processing parameters of the ammonolysis reaction and the glass composition. Mixed-alkali sodium-potassium phosphate glasses with low CaO contents present the best characteristics for nitridation. The dissolution rate has been determined by immersion of glass samples in water, at constant temperature of 37 °C, and has been discussed as a function of both modifiers composition and nitrogen content incorporated in the glasses through ammonolysis. All oxynitride glass compositions dissolve congruently and their dissolution rate decreases by more than three orders of magnitude for the highest nitrogen contents. However, it has been demonstrated that nitrogen contents as low as 2-3 wt.% (i.e. a 0.2N/P ratio) are sufficient to decrease the dissolution rate by one order of magnitude with respect to the pure oxide glasses. Novel oxynitride phosphate glasses with a controlled and congruent dissolution are proposed for future applications in biodegradable composite materials, tissue engineering or host matrices for the controlled release of drugs. PMID:21440095

Riguidel, Quentin; Muñoz, Francisco

2011-06-01

21

Properties and Structure of RO-R2O-Na2O-Al2O3-P2O5 Glasses  

SciTech Connect

The properties and structural features of RO-R2O-Na 2O-Al2O3-P2O5 (R= Mg, Ca, Ba and RO= Li) glasses in the system have been investigated. The properties of those glasses seem to depend on the field strength of the alkali or alkali-earth ions in glasses as in silicate glasses. Infrared (IR) spectroscopy indicates that the glass network is dominated by bridging P-tetrahedral present in glasses with O/P {approx_equal} 3.0. The variation in physical properties of the glasses seem to be closely related to the variation in structure of the glasses and could be explained by simple mechanism such as field strength and differences in mass.

Agus Setyo Budi; Ahmad, Asmala [Jabatan Sains and Math, Pusat Perkhidmatan Akademik, Kolej Universiti Teknikal Kebangsaan Malaysia, 75450 Ayerkeroh, Melaka (Malaysia); Safarudin Gazali Herawan [Faculty of Mechanical Engineering, Kolej Universiti Teknikal Kebangsaan Malaysia, 75450 Ayerkeroh, Melaka (Malaysia); Sunaryo [Physics Dept.-Faculty of Science, State University of Jakarta, Jakarta 13320 (Indonesia)

2007-05-09

22

Neutron scattering study on cathode LiMn2O4 and solid electrolyte 5(Li2O)(P2O5)  

NASA Astrophysics Data System (ADS)

Neutron scattering is very important technique in order to investigate the energy storage materials such as lithium-ion battery. The unique advantages, neutron can see the light atoms such as Hydrogen, Lithium, and Oxygen, where those elements are negligible by other corresponding X-ray method. On the other hand, the energy storage materials, such as lithium ion battery is very important for the application in the electric vehicles, electronic devices or home appliances. The battery contains electrodes (anode and cathode), and the electrolyte materials. There are many challenging to improve the existing lithium ion battery materials, in order to increase their life time, cyclic ability and also its stability. One of the most scientific challenging is to investigate the crystal structure of both electrode and electrolyte, such as cathodes LiCoO2, LiMn2O4 and LiFePO4, and solid electrolyte Li3PO4. Since all those battery materials contain Lithium ions and Oxygen, the used of neutron scattering techniques to study their structure and related properties are very important and indispensable. This article will review some works of investigating electrodes and electrolytes, LiMn2O4 and 5(Li2O)(P2O5), by using a high resolution powder diffraction (HRPD) at the multipurpose research reactor, RSG-Sywabessy of the National Nuclear Energy Agency (BATAN), Indonesia.

Kartini, E.; Putra, Teguh P.; Jahya, A. K.; Insani, A.; Adams, S.

2014-09-01

23

Influence of germanium oxide addition on the electrical properties of Li2O-B2O3-P2O5 glasses  

NASA Astrophysics Data System (ADS)

Lithium ion transport upon the addition of germanium oxide in a series of mixed glass former lithium borophosphate glasses has been investigated. The electrical and dielectric properties of (100 - x)[0.5Li2O-0.1B2O3-0.4P2O5]-xGeO2 with 0-25 mol% GeO2 glasses have been studied over a wide temperature (183-523 K) and frequency range (0.01 Hz-1 MHz). The increase in dc conductivity with the addition of GeO2 is attributed to the formation of ion conducting channels arising from the structural modification and formation of the P-O-Ge linkages, resulting in an easy migration of Li+ ions along these bonds. At higher GeO2 content glass network becomes more densely packed and ionic conductivity is slightly hindered as a consequence of the increase of bonding forces inside the network. Such a decrease in the conductivity is more reflection of the stronger cross-linkage in the glass network than that of the slight decrease in the Li+ ion concentration. The electrical modulus formalism is used to describe the dielectric relaxation. The scaling of the ac conductivity results in an excellent collapse onto common master curve whereas the electrical modulus spectra showed slight deviation indicating the distribution of relaxation times caused by the presence of various structural units in the glass network.

Moguš-Milankovi?, Andrea; Sklepi?, Kristina; Blažanovi?, Hrvoje; Mošner, Petr; Vorokhta, Maryna; Koudelka, Ladislav

2013-11-01

24

Bioactivity of SiO 2-CaO-P 2O 5-Na 2O glasses containing zinc-iron oxide  

NASA Astrophysics Data System (ADS)

Glasses with composition x(ZnO,Fe 2O 3)(65 - x)SiO 220(CaO,P 2O 5)15Na 2O (6 ? x ? 21 mol%) were prepared by melt-quenching technique. Bioactivity of the glasses was investigated in vitro by examining apatite formation on the surface of glasses treated in acellular simulated body fluid (SBF) with ion concentrations nearly equal to those in human blood plasma. Formation of bioactive apatite layer on the samples treated in SBF was confirmed by using Fourier transform infrared reflection (FTIR) spectroscopy, grazing incidence X-ray diffraction (GI-XRD) and scanning electron microscope (SEM) equipped with energy dispersive X-ray spectrometer. Development of an apatite structure on the surface of the SBF treated glass samples as functions of composition and time could be established using the GI-XRD data. FTIR spectra of the glasses treated in SBF show features at characteristic vibration frequencies of apatite after 1-day of immersion in SBF. SEM observations revealed that the spherical particles formed on the glass surface were made of calcium and phosphorus with the Ca/P molar ratio being close to 1.67, corresponding to the value in crystalline apatite. Increase in bioactivity with increasing zinc-iron oxide content was observed. The results have been used to understand the evolution of the apatite surface layer as a function of glass composition and immersion time in SBF.

Singh, Rajendra Kumar; Srinivasan, A.

2010-01-01

25

On the synthesis, characterization and magnetic properties of two new phases discovered in the PbO-Fe2O3-P2O5 system  

NASA Astrophysics Data System (ADS)

The PbFe3O(PO4)3 powder compound was studied by means of X-ray diffraction (XRD) from 300 to 6 K, electron-probe microanalysis (EPMA) coupled with wavelength dispersion spectroscopy (WDS), calorimetric (DSC and specific heat) and magnetic properties measurements. Magnetization, magnetic susceptibility and specific heat measurements carried out on PbFe3O(PO4)3 powders firmly establish a series of three ferromagnetic (FM)-like second order phase transitions spanned over the 32-8 K temperature range. Discrepancies between magnetization and specific heat data obtained in PbFe3O(PO4)3 powders and single crystals are highlighted. A first extraction of the critical exponents (?,?,?) was performed by ac magnetic susceptibility in both PbFe3O(PO4)3 powders and single crystals and the values were found to be consistent with mean-field theory. Further exploration of the PbO-Fe2O3-P2O5 system led to the discovery of a new langbeinite phase, Pb1.5Fe2(PO4)3, the crystal structure of which was solved by room temperature single crystal XRD (P213, Z=4, a=9.7831(2) Å). This phase does not undergo any structural phase transition down to 6 K nor any kind of long range ordering down to 2 K.

El Hafid, Hassan; Velázquez, Matias; Pérez, Olivier; El Jazouli, Abdelaziz; Pautrat, Alain; Decourt, Rodolphe; Véron, Emmanuel; Viraphong, Oudomsack; Delmas, Claude

2013-06-01

26

Structural study of Al2O3-Na2O-CaO-P2O5 bioactive glasses as a function of aluminium content  

NASA Astrophysics Data System (ADS)

Calcium phosphate based biomaterials are extensively used in the context of tissue engineering: small changes in composition can lead to significant changes in properties allowing their use in a wide range of applications. Samples of composition (Al2O3)x(Na2O)0.11-x(CaO)0.445(P2O5)0.445, where x = 0, 0.03, 0.05, and 0.08, were prepared by melt quenching. The atomic-scale structure has been studied using neutron diffraction and solid state 27Al MAS NMR, and these data have been rationalised with the determined density of the final glass product. With increasing aluminium concentration the density increases initially, but beyond about 3 mol. % Al2O3 the density starts to decrease. Neutron diffraction data show a concomitant change in the aluminium speciation, which is confirmed by 27Al MAS NMR studies. The NMR data reveal that aluminium is present in 4, 5, and 6-fold coordination and that the relative concentrations of these environments change with increasing aluminium concentration. Materials containing aluminium in 6-fold coordination tend to have higher densities than analogous materials with the aluminium found in 4-fold coordination. Thus, the density changes may readily be explained in terms of an increase in the relative concentration of 4-coordinated aluminium at the expense of 6-fold aluminium as the Al2O3 content is increased beyond 3 mol. %.

Smith, J. M.; King, S. P.; Barney, E. R.; Hanna, J. V.; Newport, R. J.; Pickup, D. M.

2013-01-01

27

Preparation, structure and bioactivity of xAu 2O 3·(100 - x)[P 2O 5·CaO] glass system  

NASA Astrophysics Data System (ADS)

Gold doped calcium phosphate glasses were prepared by the melting method. The structure of Au 2O 3-P 2O 5-CaO glasses is investigated using X-ray diffraction, infrared absorption and Raman scattering. The depth characterization of their structures is essential for the understanding of the properties of biocompatible materials. Thermal analysis DTA and TGA were also made to study behavior under different temperature regions and to see chemical changes versus time and temperature of these glasses. Bioactivity of the glasses was investigated in vitro by examining apatite formation on the surface of glasses treated in acellular simulated body fluid (SBF) with ion concentrations nearly equal to those in human blood plasma. Formation of bioactive apatite layer on the samples treated in SBF for 28 days at 37 °C was confirmed by X-ray diffraction (XRD) and scanning electron microscope (SEM). The effect of SBF soaking induces structural changes on the surface, reflected by the appearance of nano-crystalline particles agglomerated into micro-aggregates.

Regos, Adriana N.; Ardelean, I.

2011-12-01

28

Luminescence properties of Nd 3+: TeO 2-B 2O 3-P 2O 5-Li 2O glass  

NASA Astrophysics Data System (ADS)

An IR transmitting circular glass window of Nd 3+-doped borophosphate-tellurite system in the following chemical composition (mol%) was prepared: 65TeO 2+12B 2O 3+12P 2O 5+10Li 2O+1Nd 2O 3. For this Nd 3+-doped (heavy metal glass) optical material, besides the determination of density and refractive indices, an absorption spectrum (350-3200 nm) at 300 K was obtained. Based on the estimated refractive indices ( nF, nd and nC) at three different wavelengths (486.1, 589.1 and 656.3 nm), the glass dispersive power ( vd) and non-linearity characteristic factors ( n2, ?) were examined. Parameterization of the elastic constants of this glass was done from the measurement of longitudinal and shear velocities. From the measured absorption band positions, energy level structure ( E k,F k,? 4 f,?,?,?, ?¯ and ?%) parameters and from the recorded spectral profiles, oscillator strengths were computed. Both the measured and computed band energies are correlated satisfactorily with an rms deviation of ±89 cm -1. By applying the Judd-Ofelt parameterization, the radiative ( A, AT, TR) factors of the luminescent transitions ( 4F3/2? 4I13/2,11/2,9/2) of the glass were evaluated. Temperature dependent luminescence spectral analyses were carried out in the temperature range of 10-300 K to understand the fluorescence efficiency of a prominent lasing transition ( 4F3/2? 4I11/2) at 1.06 ?m and for the other two transitions ( 4F3/2? 4I9/2, I13/2) at 0.89 and 1.33 ?m as well.

Rao, T. V. R.; Reddy, R. R.; Nazeer Ahammed, Y.; Parandamaiah, M.; Sooraj Hussain, N.; Buddhudu, S.; Purandar, K.

2000-08-01

29

Thermal and structural characterization of erbium-doped borosilicate fibers with low silica content containing various amounts of P2O5 and Al2O3  

NASA Astrophysics Data System (ADS)

We report results on the processing and characterization of different glass preforms and single core fibers within the SiO2-Na2O-B2O3-Er2O3-P2O5-Al2O3 system. Micro-Raman spectroscopy was used to identify post-draw structural modification. The differences in the micro-Raman spectra recorded on the preform and on the fiber glass were attributed to a change in the structure induced by the drawing process. Changes in the silicate network organization and small scale molecular orientation within the glass matrix are suspected to occur during the fiber drawing process. We found that the extent in the changes between the preform and fiber properties depend on the glass composition. The glass network of the Al-containing fiber is expected to be less sensitive to the drawing process than that of the fiber matrix as the network of this Al-containing fiber is formed by a larger number of Si-BO units in the network and neutral three-coordinated boron compared to the network of the fiber matrix. From the micro-Raman spectra, formation of small crystals is suspected to occur in the P-containing glasses during the fiber drawing process. The resulting fibers were found to have propagation losses at 1330 nm and Er3+ absorption between (7 ± 1) and (25 ± 1) dB/m and (36 ± 1) and (47 ± 1) dB/m, respectively, depending on the glass composition.

Bourhis, Kevin; Shpotyuk, Yaroslav; Massera, Jonathan; Aallos, Ville; Jouan, Thierry; Boussard-Plédel, Catherine; Bureau, Bruno; Petit, Laeticia; Koponen, Joona; Hupa, Leena; Hupa, Mikko; Ferraris, Monica

2014-11-01

30

The neutron diffraction anomalous dispersion technique and its application to vitreous Sm 2O 3·4P 2O 5  

NASA Astrophysics Data System (ADS)

The first successful complete neutron diffraction anomalous dispersion experiment has been performed to investigate the role of the Sm 3+ ions in the structure of vitreous Sm 2O 3·4P 2O 5. The ideal form of this technique, which employs the wavelength dependence of the real and imaginary parts of the neutron scattering length close to an absorption resonance, is used and involves measurements at two pairs of wavelengths: the real part of the scattering length is varied, keeping the imaginary part constant, and then the imaginary part is varied, keeping the real part constant. If A denotes the element with the isotope ( 149Sm) having the absorption resonance and X any other element present in the sample, the first measurement can be used to extract the A-A+A-X or A-A+X-X contribution to the real space correlation function, T( r), and the second yields the A-A component correlation function. For the present glass, the Sm-Sm+Sm-X contribution (X=P or O) reveals that the Sm 3+ ions have an average co-ordination number, nSm(O), of 7, with a mean Sm sbnd O bond length of 2.375±0.005 Å, while the anomalous difference correlation function indicates that the Sm 3+ ions are ˜4.6 Å apart. The paper concludes with a discussion of the relative merits of the various neutron diffraction techniques for isolating individual or subsets of real-space component correlation functions.

Wright, Adrian C.; Cole, Jacqueline M.; Newport, Robert J.; Fisher, Cora E.; Clarke, Stuart J.; Sinclair, Roger N.; Fischer, Henry E.; Cuello, Gabriel J.

2007-02-01

31

Preparation of 3-D scaffolds in the SiO2-P2O5 system with tailored hierarchical meso-macroporosity.  

PubMed

Herein we report for the first time the synthesis of three-dimensional scaffolds in the binary system SiO2-P2O5 exhibiting different scales of porosity: (i) highly ordered mesopores with diameters of ca. 4 nm; (ii) macropores with diameters in the 30-80 ?m range with interconnections of ca. 2-4 and 8-9 ?m; and (iii) ultra-large macropores of ca. 400 ?m. The hierarchical porosity of the resulting scaffolds makes them suitable for bone tissue engineering applications. The chemical nature and mesoporosity of these matrices would allow these scaffolds to act as local controlled delivery systems of biologically active molecules, such as certain drugs to treat bone pathologies. The synthetic method consists of the combination of a single-step sol-gel route in the presence of a surfactant as the mesostructure directing agent and a biomacromolecular polymer such as methylcellulose as the macrostructure template followed by rapid prototyping technique. An exhaustive study of the aging process as well as of the rheological properties of the slurry after methylcellulose addition has been carried out to obtain hierarchical meso-macroporosity. This study allows the establishment of the time period in which the slurry presents appropriate viscosity to be extruded during the rapid prototyping once the ink is prepared. The setting up of this manufacture process at the laboratory level is important from the industrial point of view when the large-scale production of scaffolds for bone tissue repair and regeneration is targeted. PMID:20951843

García, Ana; Izquierdo-Barba, Isabel; Colilla, Montserrat; de Laorden, Carlos López; Vallet-Regí, María

2011-03-01

32

Electrical Mobility of Silver Ion in Ag2O-B2O3-P2O5-TeO2 Glasses.  

PubMed

The effect of adding TeO2 into (100 - x)[0.5Ag2O - 0.1B2O3 - 0.4P2O5] - xTeO2, with 0-80 mol % TeO2 glass, on the structural changes and electrical properties has been investigated. DSC and thermodilatomery were used to study their thermal behavior, structure was studied by Raman spectroscopy, and electrical properties have been studied by impedance spectroscopy over a wide temperature and frequency range. The introduction of TeO2 as a third glass former to the glass network causes the structural transformation from TeO3 (tp) to TeO4 (tbp) which contributes to the changes in conductivity. The glasses with low TeO2 content show only a slow decrease in dc conductivity with addition of TeO2 due to the increase of the number of nonbridging oxygens, which increases the mobility of Ag(+) ions. The steep decrease in conductivity for glasses containing more than 40 mol % TeO2 is a result of decrease of the Ag2O content and stronger cross-linkage in glass network through the formation of more Te-eqOax-Te bonds in TeO4 tbp units. The glasses obey ac conductivity scaling with respect to temperature, implying that the dynamic process is not temperature dependent. On the other hand, the scaling of the spectra for different glass compositions showed the deviations from the Summerfield scaling because of the local structural disorder which occurs as a result of the structural modifications in the tellurite glass network. PMID:25242657

Sklepi?, Kristina; Vorokhta, Maryna; Mošner, Petr; Koudelka, Ladislav; Moguš-Milankovi?, Andrea

2014-10-16

33

Sol-gel preparation and high-energy XRD study of (CaO)x(TiO2) 0.5-x(P2O5)0.5 glasses (x = 0 and 0.25).  

PubMed

Glasses from the CaO-TiO2-P2O5 system have potential use in biomedical applications. Here a method for the sol-gel synthesis of the ternary glass (CaO)0.25(TiO2)0.25(P2O5)0.5 has been developed. The structures of the dried gel and heat-treated glass were studied using high-energy X-ray diffraction. The structure of the binary (TiO2)0.5(P2O5)0.5 sol-gel was studied for comparison. The results reveal that the heat-treated (CaO)0.25(TiO2)0.25(P2O5)0.5 glass has a structure based on chains and rings of PO4 tetrahedra, held together by a combination of electrostatic interaction with Ca2+ ions and by corner-sharing oxygen atoms with TiO6 octahedra. In contrast, the (TiO2)0.5(P2O5)0.5 glass has a structure based on isolated P2O7 units linked together by corner-sharing with TiO6 groups. The results suggest that both the dried gels possess open porous structures. For the (CaO)0.25(TiO2)0.25(P2O5)0.5 sample there is a significant increase in Ca-O coordination number with heat treatment. PMID:17914617

Pickup, David M; Wetherall, Kate M; Knowles, Jonathan C; Smith, Mark E; Newport, Robert J

2008-04-01

34

Spectral analysis of RE 3+ (RE = Sm, Dy, and Tm): P 2O 5-Al 2O 3-Na 2O glasses  

NASA Astrophysics Data System (ADS)

Phosphate glasses in the compositions of 70P 2O 5-15Al 2O 3-14Na 2O-1RE 3+ (RE = Sm, Dy, and Tm) (mol%) were prepared by melt-quenching technique and characterized optically. The differential thermal analysis (DTA) profile of the host glass was carried out to confirm its thermal stability. For all the glasses absorption, photoluminescence and decay measurements have also been carried out. These glasses have shown strong emission and absorption bands in visible and near-infrared (NIR) region. From the measured absorption spectra, Judd-Ofelt (J-O) intensity parameters ( ?2, ?4 and ?6) have been calculated for all the studied ions. For Sm 3+ doped glass, four emission bands centered at 562 nm ( 4G 5/2 ? 6H 5/2), 598 nm ( 4G 5/2 ? 6H 7/2), 644 nm ( 4G 5/2 ? 6H 9/2), and 704 nm ( 4G 5/2 ? 6H 11/2) have been observed with 402 nm ( 6H 5/2 ? 4F 7/2) excitation wavelength. Of them, 598 nm ( 4G 5/2 ? 6H 7/2) has shown a bright orange emission. With regard to Dy 3+ doped glass, a blue emission band centered at 486 nm ( 4F 9/2 ? 6H 15/2) and a bright yellow emission at 575 nm ( 4F 9/2 ? 6H 13/2) have been observed, apart from 662 nm ( 4F 9/2 ? 6H 11/2) emission transition with an excitation at 388 nm ( 6H 15/2 ? 4I 13/2, 4F 7/2) wavelength. Emission bands of 650 nm ( 1G 4 ? 3F 4) and 785 nm ( 1G 4 ? 3H 5) transitions for the Tm 3+ doped glass, with an excitation wavelength at 466 nm ( 3H 6 ? 1G 4), have also been observed. The stimulated emission cross-sections of all the emission bands of RE 3+ glasses (RE = Sm, Dy, and Tm) have been computed based on their measured full-width at half maximum (FWHM, ??) and measured lifetimes ( ? m).

Lakshminarayana, G.; Yang, Rong; Mao, Mengfei; Qiu, Jianrong

2009-08-01

35

Simple and Efficient Procedure for the Friedel–Crafts Acylation of Aromatic Compounds with Carboxylic Acids in the Presence of P2O5\\/AL2O3 Under Heterogeneous Conditions  

Microsoft Academic Search

An efficient and chemoselective method for the Friedel–Crafts acylation of aromatic compounds using P2O5\\/Al2O3 and carboxylic acids. Both aromatic and aliphatic carboxylic acids reacted easily to afford the corresponding aromatic ketones in good yields.

Abdol R. Hajipour; Amin Zarei; Leila Khazdooz; Arnold E. Ruoho

2009-01-01

36

Effect of P2O5 and AlPO4 Coating on LiCoO2 Cathode Jaephil Cho,*, Joon-Gon Lee, Byoungsoo Kim, and Byungwoo Park*,  

E-print Network

the P2O5-coated and AlPO4-coated samples (charged up to 4.3 V) showed that the initial exothermic-reaction, cathode, and anode.2-14 Among these, the exothermic reaction of the flammable electrolyte with the cathode capacity at a low current rate, the capacity retention after 20 cycles at 1 C () 140 mA/g) was in the order

Park, Byungwoo

37

Characteristics and biocompatibility of Na 2O–K 2O–CaO–MgO–SrO–B 2O 3–P 2O 5 borophosphate glass fibers  

Microsoft Academic Search

A novel Na2O–K2O–CaO–MgO–SrO–B2O3–P2O5 borophosphate glass fiber is prepared. The thermal properties including differential thermal analysis (DTA) and viscosity measurement of the glass were presented. The tensile strength of the glass fiber is measured. The reaction of the glass fibers in the SBF solution is characterized by XRD, FTIR and SEM. XRD and FTIR indicate that the carbonate hydroxyapatite has formed

Kai Zheng; Shengbing Yang; Jiaojiao Wang; Christian R?ssel; Changsheng Liu; Wen Liang

38

Role of CaO addition in the local order around Erbium in SiO2GeO2P2O5 fiber preforms F. d'Acapito C. Maurizio  

E-print Network

properties of erbium ions. To our knowledge only few studies on nano-structured silica fibers were dedicatedRole of CaO addition in the local order around Erbium in SiO2­GeO2­P2O5 fiber preforms F. d in present technology. In this contribution we present a study on Er-doped fiber preforms where particular

Boyer, Edmond

39

Effect of boron oxide addition on fibre drawing, mechanical properties and dissolution behaviour of phosphate-based glass fibres with fixed 40, 45 and 50?mol% P2O5.  

PubMed

Previous studies investigating manufacture of phosphate-based glass fibres from glasses fixed with P2O5 content less than 50?mol% showed that continuous manufacture without breakage was very difficult. In this study, nine phosphate-based glass formulations from the system P2O5-CaO-Na2O-MgO-B2O3 were prepared with P2O5 contents fixed at 40, 45 and 50?mol%, where Na2O was replaced by 5 and 10?mol% B2O3 and MgO and CaO were fixed to 24 and 16?mol%, respectively. The effect of B2O3 addition on the fibre drawing, fibre mechanical properties and dissolution behaviour was investigated. It was found that addition of 5 and 10?mol% B2O3 enabled successful drawing of continuous fibres from glasses with phosphate (P2O5) contents fixed at 40, 45 and 50?mol%. The mechanical properties of the fibres were found to significantly increase with increasing B2O3 content. The highest tensile strength (1200?±?130?MPa) was recorded for 45P2O5-16CaO-5Na2O-24MgO-10B2O3 glass fibres. The fibres were annealed, and a comparison of the mechanical properties and mode of degradation of annealed and non-annealed fibres were investigated. A decrease in tensile strength and an increase in tensile modulus were observed for the annealed fibres. An assessment of the change in mechanical properties of both the annealed and non-annealed fibres was performed in phosphate-buffered saline (PBS) at 37? for 28 and 60 days, respectively. Initial loss of mechanical properties due to annealing was found to be recovered with degradation. The B2O3-containing glass fibres were found to degrade at a much slower rate as compared to the non-B2O3-containing fibres. Both annealed and non-annealed fibres exhibited a peeling effect of the fibre's outer layer during degradation. PMID:24939962

Sharmin, Nusrat; Parsons, Andrew J; Rudd, Chris D; Ahmed, Ifty

2014-11-01

40

Effect of boron oxide addition on fibre drawing, mechanical properties and dissolution behaviour of phosphate-based glass fibres with fixed 40, 45 and 50?mol% P2O5  

PubMed Central

Previous studies investigating manufacture of phosphate-based glass fibres from glasses fixed with P2O5 content less than 50?mol% showed that continuous manufacture without breakage was very difficult. In this study, nine phosphate-based glass formulations from the system P2O5-CaO-Na2O-MgO-B2O3 were prepared with P2O5 contents fixed at 40, 45 and 50?mol%, where Na2O was replaced by 5 and 10?mol% B2O3 and MgO and CaO were fixed to 24 and 16?mol%, respectively. The effect of B2O3 addition on the fibre drawing, fibre mechanical properties and dissolution behaviour was investigated. It was found that addition of 5 and 10?mol% B2O3 enabled successful drawing of continuous fibres from glasses with phosphate (P2O5) contents fixed at 40, 45 and 50?mol%. The mechanical properties of the fibres were found to significantly increase with increasing B2O3 content. The highest tensile strength (1200?±?130?MPa) was recorded for 45P2O5-16CaO-5Na2O-24MgO-10B2O3 glass fibres. The fibres were annealed, and a comparison of the mechanical properties and mode of degradation of annealed and non-annealed fibres were investigated. A decrease in tensile strength and an increase in tensile modulus were observed for the annealed fibres. An assessment of the change in mechanical properties of both the annealed and non-annealed fibres was performed in phosphate-buffered saline (PBS) at 37? for 28 and 60 days, respectively. Initial loss of mechanical properties due to annealing was found to be recovered with degradation. The B2O3-containing glass fibres were found to degrade at a much slower rate as compared to the non-B2O3-containing fibres. Both annealed and non-annealed fibres exhibited a peeling effect of the fibre's outer layer during degradation. PMID:24939962

Sharmin, Nusrat; Parsons, Andrew J; Rudd, Chris D

2014-01-01

41

Phase Relationship of CaO-SiO2-FeO-5 mass pct P2O5 System with Low Oxygen Partial Pressure at 1673 K (1400 °C)  

NASA Astrophysics Data System (ADS)

Dephosphorization by using multiphase flux could considerably decrease the consumption of CaO and prevent the addition of fluorite. However, the equilibrium phase relationship within this system, which is of significant importance for understanding the formation mechanism of multiphase flux, remains unclear. Thus, it is required to provide reliable phase diagrams of the basic slag system of multiphase flux. In this research, the phase relationship of the CaO-SiO2-FeO-5 mass pct P2O5 system at 1673 K (1400 °C) with {P}_{{{{O}}2 }} of 9.24 × 10-11 atm has been studied by using the chemical equilibration method. It has been found that solid solution consists mainly of 2CaO·SiO2-3CaO·P2O5, but occasionally it contains 3CaO·SiO2. Liquidus saturated with solid solution shrinks toward the FeO corner compared with the isothermal at 1673 K (1400 °C) of the CaO-SiO2-FeO system equilibrated with metallic iron. Thermodynamically stable CaO-FeO phase is confirmed, which could promote the condensation of 3CaO·P2O5 into the solid solution and increase the phosphorus partition ratio between the solid solution and molten slag. Based on the regular solution model, the effect of T.Fe and CaO content in the liquid phase on the phosphorus partition ratio between the solid solution and molten slag is discussed.

Gao, Xu; Matsuura, Hiroyuki; Sohn, Il; Wang, Wanlin; Min, Dong Joon; Tsukihashi, Fumitaka

2012-08-01

42

Investigations of systems ThO 2–MO 2–P 2O 5 (M=U, Ce, Zr, Pu). Solid solutions of thorium–uranium (IV) and thorium–plutonium (IV) phosphate–diphosphates  

Microsoft Academic Search

In the framework of nuclear waste management aiming at the research of a storage matrix, the chemistry of thorium phosphates has been completely re-examined. In the ThO2–P2O5 system a new compound thorium phosphate–diphosphate Th4(PO4)4P2O7 has been synthesized. The replacement of Th4+ by a smaller cation like U4+ and Pu4+ in the thorium phosphate–diphosphate (TPD) lattice has been achieved. Th4?xUx(PO4)4P2O7 and

N. Dacheux; R. Podor; V. Brandel; M. Genet

1998-01-01

43

The influence of phosphorus precursors on the synthesis and bioactivity of SiO2-CaO-P 2O 5 sol-gel glasses and glass-ceramics.  

PubMed

Bioactive glasses and glass-ceramics of the SiO(2)-CaO-P(2)O(5) system were synthesised by means of a sol-gel method using different phosphorus precursors according to their respective rates of hydrolysis-triethylphosphate (OP(OC(2)H(5))(3)), phosphoric acid (H(3)PO(4)) and a solution prepared by dissolving phosphorus oxide (P(2)O(5)) in ethanol. The resulting materials were characterised by differential scanning calorimetry and thermogravimetry, X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy coupled with energy dispersive X-ray spectroscopy and by in vitro bioactivity tests in acellular simulated body fluid. The different precursors significantly affected the main steps of the synthesis, beginning with the time required for gel formation. The most striking influence of these precursors was observed during the thermal treatments at 700-1,200 °C that were used to convert the gels into glasses and glass-ceramics. The samples exhibited very different mineralisation behaviours; especially those prepared using the phosphoric acid, which had a reduced onset temperature of crystallisation and an increased resistance to devitrification. However, all resulting materials were bioactive. The in vitro bioactivity of these materials was strongly affected by the heat treatment temperature. In general, their bioactivity decreased with increasing treatment temperature. For crystallised samples obtained above 900 °C, the bioactivity was favoured by the presence of two crystalline phases: wollastonite (CaSiO(3)) and tricalcium phosphate (?-Ca(3)(PO(4))(2)). PMID:23114636

Siqueira, Renato Luiz; Zanotto, Edgar Dutra

2013-02-01

44

Structure, glass transition temperature and spectroscopic properties of 10Li2O-xP2O5-(89-x)TeO2-1CuO (5?x?25 mol%) glass system.  

PubMed

X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), energy dispersive X-ray spectrometry (EDS), differential scanning calorimetry (DSC), infrared (IR), Raman, electron paramagnetic resonance (EPR) and optical absorption studies on 10Li2O-xP2O5-(89-x)TeO2-1CuO glasses (where x=5, 10, 15, 20 and 25 mol%) have been carried out. The amorphous nature of the glasses was confirmed using XRD and FESEM measurements. The glass transition temperature (Tg) of glass samples have been estimated from DSC traces and found that the Tg increases with increasing P2O5 content. Both the IR and Raman studies have been showed that the present glass system consists of [TeO3], [TeO4], [PO3] and [PO4] units. The spin-Hamiltonian parameters such as g?, g?, and A? have been determined from EPR spectra and it was found that the Cu2+ ion is present in tetragonal distorted octahedral site with [Formula: see text] as the ground state. Bonding parameters and bonding symmetry of Cu2+ ions have been calculated by correlating EPR and optical data and were found to be composition dependent. PMID:22248455

Upender, G; Babu, J Chinna; Mouli, V Chandra

2012-04-01

45

Prediction Model of Sulfide Capacity for CaO-FeO-Fe2O3-Al2O3-P2O5 Slags in a Large Variation Range of Oxygen Potential Based on the Ion and Molecule Coexistence Theory  

NASA Astrophysics Data System (ADS)

A thermodynamic model for predicting sulfide capacity C_{{{{S}}^{2 -}}} of CaO-FeO-Fe2O3-Al2O3-P2O5 slags in a large variation range of oxygen potential p_{{{{O}}_{ 2}}} corresponding to mass percentage of Fe t O from 1.88 to 55.50 pct, i.e., IMCT- C_{{{{S}}^{2 -}}} model, has been developed by coupling with the deduced desulfurization mechanism of the slags based on the ion and molecule coexistence theory (IMCT). The developed IMCT- C_{{{{S}}^{2 -}}} model has been verified through comparing the determined sulfide capacity C_{{{{S}}^{ 2-} , {{ determined}}}} after Ban-ya et al.[20] with the calculated C_{{{{S}}^{ 2-} , {{ calculated}}}}^{{IMCT}} by the developed IMCT- C_{{{{S}}^{2 -}}} model and the calculated C_{{{{S}}^{ 2-} , {{ calculated}}}}i by the reported sulfide capacity C_{{{{S}}^{2 -}}} models such as the KTH model. Mass percentage of Fe t O as 6.75 pct corresponding to the mass action concentration N_{{{{Fe}}t {{O}}}} of Fe t O as 0.0637 or oxygen partial p_{{{{O}}2 }} as 2.27 × 10-6 Pa is the criterion for distinguishing reducing and oxidizing zones for the slags. Sulfide capacity C_{{{{S}}^{2 - } }} of the slags in reducing zone is controlled by reaction ability of CaO regardless of slag oxidization ability. However, sulfide capacity C_{{{{S}}^{2 - } }} of the slags in oxidizing zone shows an obvious increase tendency with the increasing of slag oxidization ability. Sulfide capacity C_{{{{S}}^{2 - } }} of the slags in reducing zone keeps almost constant with variation of the simplified complex basicity (pct CaO)/((pct Al2O3) + (pct P2O5)), or optical basicity, or the mass action concentration ratios of N FeO/N CaO, N_{{{{Fe}}_{ 2} {{O}}_{ 3} }} /N_{{CaO}} , N_{{{{FeO}} {{Fe}}2 {{O}}3 }} /N_{{CaO}} , and N_{{{{Fe}}t {{O}}}} /N_{{CaO}} . Sulfide capacity C_{{{{S}}^{2 - } }} of the slags in oxidizing zone shows an obvious increase with the increasing of the simplified complex basicity (pct CaO)/((pct Al2O3) + (pct P2O5)) or optical basicity, or the aforementioned mass action concentration ratios. Thus, the aforementioned mass action concentration ratios and the corresponding mass percentage ratios of various iron oxides to basic oxide CaO are recommended to represent the comprehensive effect of various iron oxides and basic oxide CaO on sulfide capacity C_{{{{S}}^{2 - } }} of the slags.

Yang, Xue-Min; Li, Jin-Yan; Zhang, Meng; Chai, Guo-Min; Zhang, Jian

2014-07-01

46

Thermophysical Properties of Ceramic Filler-Added BaO-ZnO-B2O3-P2O5 Glass Composites for Barrier Ribs of Plasma Display Panels  

NASA Astrophysics Data System (ADS)

The capability of BaO-ZnO-B2O3-P2O5 glass in hosting various ceramic fillers (up to 20 mass% of Al2O3, TiO2, and ZnO) has been investigated. All the investigated filler-added glasses have demonstrated a reasonable densification at 550 °C to form stable ceramic filler-glass composites. Modifications of the thermophysical properties, such as coefficient of thermal expansion (CTE), glass transition temperature, and dilatometric softening temperature, by the addition of the fillers have been investigated and correlated to phase and microstructural evolution. The CTE of the fabricated composites with varying filler addition is well correlated with theoretical predictions based on the Turner equation considering the modification by phase evolution, which indicates the thermal property tuning potential of the BZBP-based glass composites for application to barrier ribs of plasma display panels.

Chong, Eugene; Hwang, Seongjin; Sung, Wookyung; Shin, Hyunho; Kim, Hyungsun

2010-10-01

47

Features of the local structural disorder in Li 2O-CaF 2-P 2O 5 glass-ceramics with Cr 2O 3 as nucleating agent  

NASA Astrophysics Data System (ADS)

Li 2O-CaF 2-P 2O 5 glasses mixed with different concentrations of Cr 2O 3 (ranging from 0 to 1.0 mol%) were crystallized. The samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy (EDS), differential thermal analysis and conventional spectroscopic techniques. The X-ray diffraction and scanning electron microscopic studies reveal the presence of lithium phosphate, calcium phosphate and chromium phosphate (complexes of Cr 3+, Cr 5+ and Cr 6+ ions) crystal phases. The study on DTA suggests that the crystallization is predominantly due to the surface crystallization when the concentration of nucleating agent Cr 2O 3 is around 0.8 mol%. The IR and Raman spectral studies of these samples indicate that the sample crystallized with 0.8 mol% Cr 2O 3 is more compact and possesses high rigidity due to the presence of chromium ions largely in tetrahedral positions.

Murali Krishna, G.; Gandhi, Y.; Venkatramaiah, N.; Venkatesan, R.; Veeraiah, N.

2008-03-01

48

Effect of pH values on surface modification and solubility of phosphate bioglass-ceramics in the CaO-P 2O 5-Na 2O-SrO-ZnO system  

NASA Astrophysics Data System (ADS)

The bioactive glass-ceramics in the CaO-P 2O 5-Na 2O-SrO-ZnO system were synthesized by the sol-gel technique, and then chemically treated at different pH values to study the solubility and surface modification. Samples sintered at 650 °C for 4 h consisted of the crystalline phase ?-Ca 2P 2O 7 and the glass matrix. After soaking in the solution at pH 1.0, the residual glass matrix on the surface appeared entirely dissolved and no new phase could be detected. Whereas at pH 3.0, web-like layer exhibiting peaks corresponding to CaP 2O 6 was formed and covered the entire surface of the sample. When conducted at pH 10.0, only part of the glass matrix was dissolved and a new phase Ca 4P 6O 19 was precipitated, forming the petaline layer. The chemical treatment can easily change the surface morphologies and phase composition of this bioactive glass-ceramics. The higher level of surface roughness resulting from the new-formed layer would improve the interface bonding and benefit for cell adhesion.

Li, Xudong; Cai, Shu; Zhang, Wenjuang; Xu, Guohua; Zhou, Wei

2009-08-01

49

UV spectroscopy, refractive indices and elastic properties of the (76 - x) TeO2·9P2O5·15ZnO·xLiNbO3 glass  

NASA Astrophysics Data System (ADS)

Tellurite glass with composition (76 - x) TeO2·9P2O5·15ZnO·xLiNbO3 (where x = 12.5, 25, 30 and 35 in mol%) have been prepared by melt-quenching method. The optical properties of the glass were estimated by measuring UV-VIS spectroscopy and refractive indices at different wavelength. From the absorption edge studies, the optical energy gap (Eopt) and Urbach energy (?E) has been evaluated. Moreover mechanical properties with structural properties of the glasses were investigated by measuring both longitudinal and shear velocities by using the pulse-echo overlap technique at 5 MHz. The elastic moduli such as: longitudinal (?), shear (?), bulk (B) and Young's (Y) increase with the increase in LiNbO3 content in the prepared glasses matrix. The different physical parameters such as density, molar volume, oxygen molar volume, oxygen packing density, molar polarizability, Debye temperature, microhardness, Poisson's ratio, kinetic fragility and fractal bond connectivity have been computed and were found to depend on the glass composition.

Yousef, El Sayed; Al-Qaisi, Badriah

2013-05-01

50

Effect of ZrO(2) additions on the crystallization, mechanical and biological properties of MgO-CaO-SiO(2)-P(2)O(5)-CaF(2) bioactive glass-ceramics.  

PubMed

A series of ZrO(2) doped MgO-CaO-SiO(2)-P(2)O(5)-CaF(2) bioactive glass-ceramics were obtained by sintering method. The crystallization behavior, phase composition, morphology and structure of glass-ceramics were characterized. The bending strength, elastic modulus, fracture toughness, micro-hardness and thermal expansion coefficient (TEC) of glass-ceramics were investigated. The in vitro bioactivity and cytotoxicity tests were used to evaluate the bioactivity and biocompatibility of glass-ceramics. The sedimentation mechanism and growth process of apatites on sample surface were discussed. The results showed that the mainly crystalline phases of glass-ceramics were Ca(5)(PO4)3F (fluorapatite) and ?-CaSiO(3). (?-wollastonite). m-ZrO(2) (monoclinic zirconia) declined the crystallization temperatures of glasses. t-ZrO(2) (tetragonal zirconia) increased the crystallization temperature of Ca(5)(PO4)(3)F and declined the crystallization temperature of ?-CaSiO(3). t-ZrO(2) greatly increased the fracture toughness, bending strength and micro-hardness of glass-ceramics. The nanometer apatites were induced on the surface of glass-ceramic after soaking 28 days in SBF (simulated body fluid), indicating the glass-ceramic has good bioactivity. The in vitro cytotoxicity test demonstrated the glass-ceramic has no toxicity to cell. PMID:24780435

Li, H C; Wang, D G; Meng, X G; Chen, C Z

2014-06-01

51

The structure of the rare-earth phosphate glass (Sm2O3)0.205(P2O5)0.795 studied by anomalous dispersion neutron diffraction  

NASA Astrophysics Data System (ADS)

The role of the Sm3+ ions in the structure of vitreous Sm2O3·4P2O5 has been investigated using the neutron diffraction anomalous dispersion technique, which employs the wavelength dependence of the real and imaginary parts of the neutron scattering length close to an absorption resonance. The data described here represent the first successful complete neutron anomalous dispersion study on an amorphous material. This experimental methodology permits one to determine exclusively the closest \\mathrm {Sm\\cdots Sm} separation. Knowledge of the \\mathrm {R\\cdots R} (R = rare-earth) pairwise correlation is key to understanding the optical and magnetic properties of rare-earth phosphate glasses. The anomalous difference correlation function, ?T''(r), shows a dominant feature pertaining to a \\mathrm {Sm\\cdots Sm} separation, centred at 4.8 Å. The substantial width and marked asymmetry of this peak indicates that the minimum approach of Sm3+ ions could be as close as 4 Å. Information on other pairwise correlations is also revealed via analysis of T(r) and ?T(r) correlation functions: Sm3+ ions display an average co-ordination number, nSm(O), of 7, with a mean Sm-O bond length of 2.375(5) Å whilst the PO4 tetrahedra have a mean P-O bond length of 1.538(2) Å. Second- and third-neighbour correlations are also identified. These results corroborate previous findings. Such consistency lends support to the application of the anomalous dispersion technique to determine \\mathrm {Sm\\cdots Sm} separations.

Cole, Jacqueline M.; Wright, Adrian C.; Newport, Robert J.; Sinclair, Roger N.; Fischer, Henry E.; Cuello, Gabriel J.; Martin, Richard A.

2007-02-01

52

Structural characterization and physical properties of P2O5-CaO-Na2O-TiO2 glasses by Fourier transform infrared, Raman and solid-state magic angle spinning nuclear magnetic resonance spectroscopies.  

PubMed

Phosphate-based glasses have been investigated for tissue engineering applications. This study details the properties and structural characterization of titanium ultra-phosphate glasses in the 55(P(2)O(5))-30(CaO)-(25-x)(Na(2)O)-x(TiO(2)) (0?x?5) system, which have been prepared via melt-quenching techniques. Structural characterization was achieved by a combination of X-ray diffraction (XRD), and solid-state nuclear magnetic resonance, Raman and Fourier transform infrared spectroscopies. Physical properties were also investigated using density, degradation and ion release studies; additionally, differential thermal analysis was used for thermal analysis of these glasses. The results show that with the addition of TiO(2) the density and glass transition temperature increased whereas the degradation and ion release properties are decreased. From XRD data, TiP(2)O(7) and CaP(2)O(6) were detected in 3 and 5 mol.% TiO(2)-containing glasses. Magic angle spinning nuclear magnetic resonance results confirmed that as TiO(2) is incorporated into the glass; the amount of Q(3) increases as the amount of Q(2) consequently decreases, indicating increasing polymerization of the phosphate network. Spectroscopy results also showed that the local structure of glasses changes with increasing TiO(2) content. As TiO(2) is incorporated into the glass, the phosphate connectivity increases, indicating that the addition of TiO(2) content correlates unequivocally with an increase in glass stability. PMID:21930253

Kiani, Azadeh; Hanna, John V; King, Scott P; Rees, Gregory J; Smith, Mark E; Roohpour, Nima; Salih, Vehid; Knowles, Jonathan C

2012-01-01

53

Electrical conductivity, TEP and dielectric studies on mol% 66.6 Agl-22.2 Ag 2 O-11.1 (0.8 V 2 O 5 -0.2 P 2 O 5 ) electrolyte material for solid state batteries  

Microsoft Academic Search

In the superionic conducting quarternary system Agl-Ag2O-V2O5-P2O5, the best ionic conductivity was obtained for the composition 66.6% Agl-33.3% (2Ag2O-1 (V2O5-P2O5)), when the GF\\/GM ratio was varied from 0.20 to 5.0. Then fixing the GF\\/GM ratio at 0.50, the ratio of the glass formers V2O5 and P2O5 were varied and the highest conducting composition was obtained as 66.6% Agl-22.2 Ag2O-11.1% (0.8

P. Sathya Sainath Prasad; S. Radhakrishna

1988-01-01

54

Structural investigation of vanadium ions doped Li2Osbnd PbOsbnd B2O3sbnd P2O5 glasses by means of spectroscopic and dielectric studies  

NASA Astrophysics Data System (ADS)

In the present investigation we report the synthesis of a series of transparent glasses of composition 20Li2Osbnd 20PbOsbnd 45B2O3sbnd (15-x) P2O5: xV2O5 with eight values of x ranging from 0 to 2.5 mol%, and their characterization. X-ray diffraction (XRD) spectra reflected the amorphous nature of the glasses. Optical absorption, electron paramagnetic resonance (EPR) spectra and FTIR study of vanadyl ions in the present glass network have been analyzed. The optical absorption and EPR investigations have revealed that vanadium ions do exist in both V4+ and V5+ states and the redox ratio (V4+/V5+) is observed to increase with the increase in concentration of V2O5. Dielectric properties viz., dielectric constant ??(?), loss tan ?, electrical moduli M?(?), M?(?), a.c. conductivity ?ac over an extensive scale of frequency and temperature have been investigated as a function of V2O5 concentration. The dispersion of dielectric constant ??(?) with temperature has been interpreted by space charge polarization model. The dielectric loss and electrical moduli variation with frequency and temperature exhibited relaxation effects. These effects are ascribed to V4+ ions. The a.c. conductivity of the prepared glasses is perceived to escalate with the hike in V2O5 concentration whereas the activation energy for conduction exhibits a reverse trend. The conductivity mechanism is explained on the basis of polaronic transfer between V4+ and V5+ ions. The low temperature a.c. conductivity mechanism is elucidated by the quantum mechanical tunneling model. The growth in the values of dielectric parameters with raise in the concentration of V2O5 is due to V4+ ions which act as modifiers. The investigation of these results has indicated that at higher concentrations of V2O5, the VO2+ ions in the glasses were present in octahedral sites with tetragonal compression and belong to C4v symmetry.

Yusub, S.; Narendrudu, T.; Suresh, S.; Krishna Rao, D.

2014-11-01

55

Ionic conductivity of mixed glass former 0.35Na(2)O + 0.65[xB(2)O(3) + (1 - x)P(2)O(5)] glasses.  

PubMed

The mixed glass former effect (MGFE) is defined as a nonlinear and nonadditive change in the ionic conductivity with changing glass former fraction at constant modifier composition between two binary glass forming compositions. In this study, mixed glass former (MGF) sodium borophosphate glasses, 0.35Na2O + 0.65[xB2O3 + (1 - x)P2O5], 0 ? x ? 1, have been prepared, and their sodium ionic conductivity has been studied. The ionic conductivity exhibits a strong, positive MGFE that is caused by a corresponding strongly negative nonlinear, nonadditive change in the conductivity activation energy with changing glass former content, x. We describe a successful model of the MGFE in the conductivity activation energy terms of the underlying short-range order (SRO) phosphate and borate glass former structures present in these glasses. To do this, we have developed a modified Anderson-Stuart (A-S) model to explain the decrease in the activation energy in terms of the atomic level composition dependence (x) of the borate and phosphate SRO structural groups, the Na(+) ion concentration, and the Na(+) mobility. In our revision of the A-S model, we carefully improve the treatment of the cation jump distance and incorporate an effective Madelung constant to account for many body coulomb potential effects. Using our model, we are able to accurately reproduce the composition dependence of the activation energy with a single adjustable parameter, the effective Madelung constant, that changes systematically with composition, x, and varies by no more than 10% from values typical of oxide ceramics. Our model suggests that the decreasing columbic binding energies that govern the concentration of the mobile cations are sufficiently strong in these glasses to overcome the increasing volumetric strain energies (mobility) caused by strongly increasing glass-transition temperatures combined with strongly decreasing molar volumes of these glasses. The dependence of the columbic binding energy term on the relative high-frequency dielectric permittivity suggests that the increased polarizability of the bridging oxygens connecting SRO tetrahedral boron units to phosphorus units causes further charge delocalization away from the negatively charged tetrahedral boron units, leading to a lowering of the charge density, and is the underlying cause of the MGFE. PMID:24295052

Christensen, Randilynn; Olson, Garrett; Martin, Steve W

2013-12-27

56

Structural studies of mixed glass former 0.35Na2O + 0.65[xB2O3 + (1 - x)P2O5] glasses by Raman and 11B and 31P magic angle spinning nuclear magnetic resonance spectroscopies.  

PubMed

The mixed glass former (MGF) effect (MGFE) is defined as a nonlinear and nonadditive change in the ionic conductivity with changing glass former composition at constant modifier composition. In this study, sodium borophosphate 0.35Na(2)O + 0.65[xB(2)O(3) + (1 - x)P(2)O(5)], 0 ? x ? 1, glasses which have been shown to exhibit a positive MGFE have been prepared and examined using Raman and (11)B and (31)P magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopies. Through examination of the short-range order (SRO) structures found in the ternary glasses, it was determined that the minority glass former, B for 0.1 ? x ? 0.7 and P for 0.7 ? x ? 0.9, is "overmodified" and contains more Na(+) ions than would be expected from simple linear mixing of the binary sodium borate, x = 1, and sodium phosphate, x = 0, glasses, respectively. Changes in the intermediate range order (IRO) structures were suggested by changes in the NMR spectral chemical shifts and Raman spectra wavenumber shifts over the full composition range x in the Raman and MAS NMR spectra. The changes observed in the chemical shifts of (31)P MAS NMR spectra with x are found to be too large to be caused solely by changing sodium modification of the phosphate SRO structural groups, and this indicates that internetwork bonding between phosphorus and boron through bridging oxygens (BOs), P-O-B, must be a major contributor to the IRO structure of these glasses. While not fully developed, a first-order thermodynamic analysis based upon the Gibbs free energies of formation of the various SRO structural units in this system has been developed and can be used to account for the preferential formation of tetrahedral boron groups, B(4), by the reaction of B(3) with P(2) groups to form B(4) and P(3) groups, respectively, where the superscript denotes the number of BOs on these units, in these glasses. This preference for B(4) units appears to be a predominate cause of the changing modifier to glass former ratio with composition x in these ternary MGF glasses and appears to be associated with the large negative value of the Gibbs free energy of formation of this group. PMID:23281937

Christensen, Randilynn; Olson, Garrett; Martin, Steve W

2013-02-21

57

Thin film amorphous electrolytes: The Li2O-SiO2-P2O5 system.  

National Technical Information Service (NTIS)

Thin film amorphous electrolytes with compositions xLi(sub 2)O: ySiO(sub 2):zP(sub 2)O(sub 5) were deposited by single and dual source rf magnetron sputtering and their compositions determined by electron and ion beam techniques. Films containing P but no...

J. B. Bates, N. J. Dudney, B. C. Sales, R. A. Zuhr, G. R. Gruzalski

1991-01-01

58

Reflexi?n bio?tica sobre el uso de organismos gen?ticamente modificados  

PubMed Central

El presente artículo reflexiona desde los 4 principios de la bioética el uso comercial de organismos genéticamente modificados. Se cuestiona fundamentalmente la falta de transferencia de tecnología entre el mundo desarrollado y en desarrollo y el que el presente sistema de patentamiento de organismos vivos modificados fomenta intereses comerciales y no da debida importancia al desarrollo sostenible de la agricultura y ganadería en los países en desarrollo, donde más se necesita. Se reflexiona sobre la importancia que tiene evaluar los riesgos antes de introducirse en el mercado organismos genéticamente modificados y la necesidad de regulación en los países. PMID:21927675

Yunta, Eduardo Rodriguez

2011-01-01

59

Influence of rare earth addition on the thermal and structural stability of CaOsbnd Fe2O3sbnd P2O5 glasses  

NASA Astrophysics Data System (ADS)

The thermal and structural stability of calcium iron phosphate glasses doped with rare earth oxides has been studied by investigating differential scanning calorimetry, the concentration of modified ions in leachate, Fourier transform infrared spectra, and Raman spectra. The results showed that thermal stability of the rare earth phosphate glasses increased and the release rate of rare earth ions in leachate decreased with the increase of cationic field strength. It related to the known structural units and characteristic bands of these glasses detected by infrared and Raman spectra. Metaphosphate chains by the cross-links of calcium ions and Psbnd Osbnd P linkages were easier to hydrolyze, which converted to orthophosphate units after corrosion. The formation of more chemically resistant REsbnd Osbnd P bonds with the addition of rare earth leaded to an increased quantity of nonbridging oxygen, which caused consequent variations in the chemical durability of rare earth glasses.

Li, Haijian; Liang, Xiaofeng; Wang, Cuiling; Yu, Huijun; Li, Zhen; Yang, Shiyuan

2014-11-01

60

Bioactive glasses in the system CaO–B 2O 3–P 2O 5: Preparation, structural study and in vitro evaluation  

Microsoft Academic Search

Glasses in the system xB2O3(1?x) [yCaOP2O5], (x=0, 0.1, 0.2, 0.3, y=2, 2.6, 3, 4, 5) have been prepared by fast quenching of high temperature melts. The presence of B2O3 affected the glass forming ability, allowing the preparation of calcium phosphate glasses with y?2.6. The structure of glasses was analyzed by ?-Raman and infrared spectroscopy. The analysis indicated that the glass

A. Saranti; I. Koutselas; M. A. Karakassides

2006-01-01

61

Characterization of the disordered phosphate network in CaO–P 2O 5 glasses by 31P solid-state NMR and Raman spectroscopies  

Microsoft Academic Search

In this study, the disordered network of calcium phosphate glasses is investigated by Raman scattering and 31P magic angle spinning (MAS) solid-state NMR spectroscopies. The use of both spectroscopies in a combined approach allows drawing a detailed understanding of the structure of these glasses. The P?O?P connectivity between successive PO4 tetrahedra is probed using through-bond double quantum–single quantum (DQ–SQ) and

Claire Roiland; Franck Fayon; Patrick Simon; Dominique Massiot

2011-01-01

62

Novel low-temperature synthesis of glasses and glass-ceramics in the B 2 O 3 SiO 2 -P 2 O 5 system  

Microsoft Academic Search

In recent years considerable progress has been made in electronic packaging substrate technology. The future need of miniaturization of devices to increase the signal processing speed calls for an increase in the device density requiring the substrates to be designed for better thermal, mechanical and electrical efficiency. Fast signal propagation with minimum delay requires the substrate to possess very low

P. N. Kumta; M. A. Sriram

1993-01-01

63

Response of human bone marrow stromal cells to a resorbable P(2)O(5)-SiO(2)-CaO-MgO-Na(2)O-K(2)O phosphate glass ceramic for tissue engineering applications.  

PubMed

This work focuses on the synthesis and characterization of a novel bioresorbable glass ceramic phosphate-based material (GC-ICEL). More specifically, its solubility in different aqueous media (water, Tris-HCl and acellular simulated body fluid) and the response of human stromal cells cultured on it were investigated. X-ray diffraction analysis showed the presence of two crystalline phases identified as Na(2)Mg(PO(4))(3) and Ca(2)P(2)O(7) and dissolution tests highlighted a preferential dissolution of the Na(2)Mg(PO(4))(3) phase and of the residual amorphous phase in all the chosen media. Soaking tests in simulated body fluid showed precipitation of a hydroxyapatite layer, demonstrating the bioactivity of GC-ICEL, which is partially due to the reported bioactivity of Ca(2)P(2)O(7). The effect of GC-ICEL on adhesion, proliferation and osteoblastic gene expression of human bone marrow-derived stromal cells was also studied. Combining molecular and biochemical analyses, it was found that bone marrow cell differentiation was stimulated over proliferation on GC-ICEL. Moreover, the expression of bone-related genes in cells cultured on GC-ICEL confirmed the bioactivity of this phosphate-based glass ceramic, which might have a stimulatory effect on osteogenesis. PMID:19616650

Leonardi, E; Ciapetti, G; Baldini, N; Novajra, G; Verné, E; Baino, F; Vitale-Brovarone, C

2010-02-01

64

Na +-superionic conductors of glass–ceramics in the system Na 2O–Sm 2O 3–X 2O 3–P 2O 5–SiO 2 (X=Al, Ga)  

Microsoft Academic Search

Glass–ceramics of the aluminum or gallium, and phosphorus-containing Na5SmSi4O12-type Na+-superionic conductors (N5SXPS) were prepared by crystallization of glasses with the composition Na3+3x?y+zSm1?xXzPySi3?y?zO9 (X=Al; NSAPS, X=Ga; NSGPS), and the effects of X elements on the separation of the phase and the microstructural effects on the conduction properties of glass–ceramics were discussed. N5SXPS was obtained as a stable phase at high temperatures.

Toshinori Okura; Hideki Monma; Kimihiro Yamashita

2004-01-01

65

Diopside (CaO-MgO-2SiO2)-fluorapatite (9CaO-3P2O5-CaF2) glass-ceramics: Potential materials for bone tissue engineering  

SciTech Connect

Glass-ceramics in the diopside (CaMgSi2O6) - fluorapatite [Ca5(PO4)3F] system are potential candidates for restorative dental and bone implant materials. In the present study, a series of glasses along diopside - fluorapatite binary system have been prepared with varying diopside/fluorapatite ratios for their potential applications in bone tissue engineering. The glasses were obtained from compositions with fluorapatite contents varying between 0-40 wt.%. The sintering ability and crystallization kinetics of as obtained amorphous glasses have been studied through hot-stage microscopy (HSM) and differential thermal analysis (DTA), respectively while crystalline phase evolution in sintered GCs has been followed by X-ray diffraction (XRD) adjoined with Rietveld-R.I.R. technique and scanning electron microscopy (SEM). Further, biodegradation and apatite forming ability of glass-ceramics were investigated by immersion of glass-ceramic discs in simulated body fluid (SBF) solution while chemical degradation and weight loss of glass-ceramics were studied by immersion in Tris-HCl in accordance with standard ISO 10993-14. The addition of fluorapatite (10-25 wt.%) in diopside glass system significantly enhanced the sintering ability of glass-ceramics and improved their apatite forming ability along with their biodegradation behaviour. Moreover, the in vitro cellular responses to glass-ceramics showed good cell viability and significant stimulation of osteoblastic differentiation, suggesting the possible use of the glass-ceramics for bone regeneration.

Kansal, Ishu; Goel, Ashutosh; Tulyaganov, Dilshat U.; Pascual, Maria J.; Lee, Hye-Young; Kim, Hae-Won; Ferreira, Jose M.

2011-08-18

66

DESAF?OS ?TICOS DE LA INVESTIGACI?N CON ANIMALES, MANIPULACI?N GEN?TICA  

PubMed Central

En la investigación con animales existen cuestionamientos éticos tanto en el uso como modelos de enfermedades humanas y requisito previo para ensayos en humanos como en la introducción de modificaciones genéticas. Algunos de estos cuestionamientos son: no representar exactamente la condición humana como modelos, realizar pruebas de toxicidad con grave daño para los animales, alterar su naturaleza mediante modificaciones genéticas, riesgos de la introducción de organismos genéticamente modificados. El uso de animales en investigación para beneficio humano, impone al ser humano la responsabilidad moral de respetarlo, no haciéndoles sufrir innecesariamente, al estar trabajando con seres vivientes y sentientes. PMID:23338641

Yunta, Eduardo Rodriguez

2012-01-01

67

MANTENIMIENTO CON PILATES FUNDAMENTACIN  

E-print Network

MANTENIMIENTO CON PILATES FUNDAMENTACI�N Esta disciplina pretende fusionar la gimnasia de mantenimiento con los beneficios que conlleva el método Pilates. Para ello vamos a definir el método Pilates como un sistema de entrenamiento físico y mental creado a principios del siglo XX por Joseph Pilates

Escolano, Francisco

68

Entrevistas con Eduardo Pavlovsky  

E-print Network

ahora se estudia con microcirugía es que cada golpe produce una microhemorragia; es decir, que no se ven a la visión normal pero cuando haces una autopsia, te das cuenta que el cerebro del boxeador tiene microhemorragias. De alguna manera los...

Giella, Miguel Á ngel

1985-10-01

69

The Con Test  

ERIC Educational Resources Information Center

In this article, the author describes the format of the Con Test, an Australian television game show which followed the same general rules and game play as the UK show PokerFace. At the end of each round a contestant needs to decide whether or not he or she should fold. A contestant needs to know how likely it is that he or she is in last place.…

Fletcher, Michael

2009-01-01

70

Nam Con Son Basin  

SciTech Connect

The Nam Con Son basin is the largest oil and gas bearing basin in Vietnam, and has a number of producing fields. The history of studies in the basin can be divided into four periods: Pre-1975, 1976-1980, 1981-1989, and 1990-present. A number of oil companies have carried out geological and geophysical studies and conducted drilling activities in the basin. These include ONGC, Enterprise Oil, BP, Shell, Petro-Canada, IPL, Lasmo, etc. Pre-Tertiary formations comprise quartz diorites, granodiorites, and metamorphic rocks of Mesozoic age. Cenozoic rocks include those of the Cau Formation (Oligocene and older), Dua Formation (lower Miocene), Thong-Mang Cau Formation (middle Miocene), Nam Con Son Formation (upper Miocene) and Bien Dong Formation (Pliocene-Quaternary). The basement is composed of pre-Cenozoic formations. Three fault systems are evident in the basin: north-south fault system, northeast-southwest fault system, and east-west fault system. Four tectonic zones can also be distinguished: western differentiated zone, northern differentiated zone, Dua-Natuna high zone, and eastern trough zone.

Tin, N.T.; Ty, N.D.; Hung, L.T.

1994-07-01

71

Una entrevista con Emilio Carballido.  

E-print Network

. Volví a Córdoba poco antes de la adolescencia y entonces siempre estuve ya con muchos contactos en Córdoba, pero viviendo allá sin estudiar. Yo perdí años de escuela por irme a vivir a Córdoba. Es decir, yo llevé mi carrera con muchas lagunas, de... chico. Entonces escojo lugares chicos. Tomemos el caso de El jardín de los cerezos, Un enemigo del pueblo, El padre y ciertas obras muy respetables que realmente no puede uno decir que son costumbristas. Bueno, las mías no es que las ponga en esa...

Vé lez, Joseph F.

1973-10-01

72

FloCon 2011 Proceedings.  

National Technical Information Service (NTIS)

At FloCon 2011, participants focused on learning about their networks and confirming what we know about them. Participants explored a wide range of topics and discussed dark space, how many web servers you're actually operating, spam, and DNS servers and ...

T. Zseby

2011-01-01

73

INFORMATICA Preparazione delle presentazioni con  

E-print Network

INFORMATICA Preparazione delle presentazioni con Microsoft PowerPoint 2010 1 PROGRAMMA ! L buona presentazione 4 #12;L'AMBIENTE ! Microsoft PowerPoint è una applicazione della suite a pagamento " Microsoft Office PowerPoint 2010. 5 ALTERNATIVA ! In alternativa esiste Impress della suite Apache Open

Sproston, Jeremy

74

todasuvida: Las personas con diabetes son ms  

E-print Network

diabetes Controlesu todasuvida: Las personas con diabetes son más propensas a padecer de enfermedades del corazón que quienes no tienen diabetes. Boletín 631 D Las personas con diabetes tienen mayor- res relacionados con la diabetes, como derrame cerebral, mala circulación en las piernas y pies e

75

Sulla termodinamica dei materiali con memoria  

Microsoft Academic Search

Sunto  Si espone limitandosi, per semplicità, ai corpi solidi con deformazioni infinitesime, la teoria di Coleman sulla termodinamica\\u000a dei materiali con memoria. Si considerano poi, in particolare, i corpi viscoelastici lineari e identificata l'energia libera\\u000a con l'energia potenziale interna di Volterra, si deducono, dalla termodinamica, proprietà dei coefficenti di memoria, finora\\u000a ammesse come intuitive e si ottiene una rapida dimostrazione del

Dario Graffi

1974-01-01

76

Opciones de cirugía para mujeres con CDIS o con cáncer de seno  

Cancer.gov

E-book para mujeres con CDIS o con cáncer de seno que pueden operarse con cirugía. Esta guía explica los tipos de cirugía de seno, como la operación para preservar el seno y la mastectomía, y ayuda a las mujeres a decidir cuál cirugía es la mejor opción para ellas.

77

Opciones de cirugía para mujeres con CDIS o con cáncer de seno  

Cancer.gov

Contiene información sobre los tipos de cirugía de seno, como la operación para conservar el seno y la mastectomía, y ayuda a las mujeres diagnosticadas con CDIS o con cáncer de seno a decidir cuál cirugía es la más conveniente para ellas.

78

InterCon Travel Health: Case B  

ERIC Educational Resources Information Center

InterCon provides services to health insurers of foreign tourists who travel to the United States and Canada. Management wants to implement a new information system that will deal with several operational problems, but it is having difficulty securing the capital resources to fund the system's development. After an initial failure, the chief…

Truman, Gregory E.; Pachamanova, Dessislava A.; Goldstein, Michael A.

2010-01-01

79

erators with general and specific information con-  

E-print Network

, mail order, con- signment or at wholesale are prohibited. Cottage food products must be labeled in ac- tive cottage food opera- tor, please take some time to review this guid- ance document so that you are better informed about cottage food op- eration requirements. The 2011 Florida Leg- islature enacted House

Jawitz, James W.

80

Google Scholar: the pros and the cons  

Microsoft Academic Search

Purpose – To identify the pros and the cons of Google Scholar. Design\\/methodology\\/approach – Chronicles the recent history of the Google Scholar search engine from its inception in November 2004 and critiques it with regard to its merits and demerits. Findings – Feels that there are massive content omissions presently but that, with future changes in its structure, Google Scholar

Péter Jacsó

2005-01-01

81

Too Many Minas Spoil The Con  

E-print Network

Malfois. There was quite a frenzy of activity caused by that - eventually, given the con atmosphere, we formed rival groups, all trying to be the first to spot the real Mina de Malfois and get her autograph. I was the first one in my team to spot...

2007-02-13

82

The Pros and Cons of Artificial Reefs  

NSDL National Science Digital Library

This lesson plan asks students to consider whether artificial reefs (human-made objects in the ocean or sea) are good for marine ecosystems. Students will look at pictures of artificial reefs and read articles describing the pros and cons of these structures. They will conclude by writing paragraphs explaining whether they think a new artificial reef should be created in Florida waters.

83

CON Advising Academic Year 2013-2014  

E-print Network

in the College of Nursing (CON). Please keep this document and refer to it before your advising appointments 401 Email: rstower@seattleu.edu russel14@seattleu.edu Phone: 206.296.2242 206.296.2091 Web site: http://www.seattleu.edu/nursing requirements Know what resources are available to me that help promote academic success Reflect on my

Carter, John

84

DIVERSAS MANERAS DE GENERAR ENERGIA CON  

E-print Network

DIVERSAS MANERAS DE GENERAR ENERGIA CON AGUA EN EL PLANETA Fernando Gilbes Santaella Departamento Renovable en PR Solar Eolica Biocombustibles Agua #12;EL PLANETA AZUL #12;EL AGUA EN LA TIERRA #12" (hydropower), que es la fuerza producida por el movimiento del agua. No genera desperdicios y no produce

Gilbes, Fernando

85

Programmazione (scripting) server-side con PHP  

E-print Network

1 MODULO 1 PARTE 3 Programmazione (scripting) server-side con PHP 3.c Goy - a.a. 2011 server contenuto nel cookie) Goy - a.a. 2011/2012 Programmazione Web 3 PHP: cookie - I E' possibile scrivere e leggere cookie utilizzando PHP Per scrivere un cookie, utilizzo la funzione predefinita

Goy, Anna

86

Programmazione (scripting) server-side con PHP  

E-print Network

1 MODULO 1 PARTE 3 Programmazione (scripting) server-side con PHP 3.d Goy - a.a. 2012 di interazione home.html ll h identif.php cancella.php cancellato.php logout.phpacquisti.php Goy - a.a. 2012/2013 Programmazione Web 5 sess_scad.html home.html - login/registrazione utente identif.php

Goy, Anna

87

Programmazione (scripting) server-side con PHP  

E-print Network

1 MODULO 1 PARTE 3 Programmazione (scripting) server-side con PHP 3.d Goy - a.a. 2010 di interazione home.html ll h identif.php cancella.php cancellato.php logout.phpacquisti.php Goy - a.a. 2010/2011 Programmazione Web 5 sess_scad.html home.html - login/registrazione utente identif.php

Goy, Anna

88

Programmazione (scripting) server-side con PHP  

E-print Network

1 MODULO 1 PARTE 3 Programmazione (scripting) server-side con PHP 3.d Goy - a.a. 2011 di interazione home.html ll h identif.php cancella.php cancellato.php logout.phpacquisti.php Goy - a.a. 2011/2012 Programmazione Web 5 sess_scad.html home.html - login/registrazione utente identif.php

Goy, Anna

89

Programmazione (scripting) server-side con PHP  

E-print Network

1 MODULO 1 PARTE 3 Programmazione (scripting) server-side con PHP 3.c Goy - a.a. 2010 contenuto nel cookie) Goy - a.a. 2010/2011 Programmazione Web 3 PHP: cookie - I E' possibile scrivere e leggere cookie utilizzando PHP Per scrivere un cookie, utilizzo la funzione predefinita setcookie

Goy, Anna

90

Programmazione (scripting) server-side con PHP  

E-print Network

1 MODULO 1 PARTE 3 Programmazione (scripting) server-side con PHP 3.c Goy - a.a. 2012 server contenuto nel cookie) Goy - a.a. 2012/2013 Programmazione Web 3 PHP: cookie - I E' possibile scrivere e leggere cookie utilizzando PHP Per scrivere un cookie, utilizzo la funzione predefinita

Goy, Anna

91

Programmazione (scripting) server-side con PHP  

E-print Network

1 MODULO 1 PARTE 3 Programmazione (scripting) server-side con PHP 3.d Goy - a.a. 2009 di interazione home.html ll h identif.php cancella.php cancellato.php logout.phpacquisti.php Goy - a.a. 2009/2010 Programmazione Web 5 sess_scad.html home.html - login/registrazione utente identif.php

Goy, Anna

92

Programmazione (scripting) server-side con PHP  

E-print Network

1 MODULO 1 PARTE 3 Programmazione (scripting) server-side con PHP 3.c Goy - a.a. 2009) Goy - a.a. 2009/2010 Programmazione Web 3 PHP: cookie - I E' possibile scrivere e leggere cookie utilizzando PHP Per scrivere un cookie, utilizzo la funzione predefinita setcookie(...): nome del cookie

Goy, Anna

93

C31. EVALUACIÓN DE CUATRO GENOTIPOS DE MAÍZ AMARILLO (Zea mays L.) BAJO TRES NIVELES DE FERTILIZACIÓN DE NITRÓGENO Y FÓSFORO PARA LA PRODUCCIÓN DE \\  

Microsoft Academic Search

SUMMARY Ecuadorian food canning industry concerned for this provider's production, principally Baby Corn, has envisioned the necessity to find a new yellow corn genotype (Zea mays L.). Consequently, four genotypes of yellow corn were evaluated; Brasilia, SV1035, DK 5005 and INIAP 180, with three levels of nitrogen and phosphorous fertilization (0 kg\\/ha, 40 kg P2O5 con 16 kg nitrógeno y

94

Somatic cell nuclear transfer: pros and cons.  

PubMed

Even though the technique of mammalian SCNT is just over a decade old it has already resulted in numerous significant advances. Despite the recent advances in the reprogramming field, SCNT remains the bench-mark for the generation of both genetically unmodified autologous pluripotent stem cells for transplantation and for the production of cloned animals. In this review we will discuss the pros and cons of SCNT, drawing comparisons with other reprogramming methods. PMID:20232594

Sumer, Huseyin; Liu, Jun; Tat, Pollyanna; Heffernan, Corey; Jones, Karen L; Verma, Paul J

2009-01-01

95

Aspectos relacionados con la sexualidad y la reproducción (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de los factores que podrían afectar el funcionamiento sexual de las personas con cáncer. Se discuten además temás sobre la fertilidad relacionados con el tratamiento del cáncer.

96

Aspectos relacionados con la sexualidad y la reproducción (PDQ®)  

Cancer.gov

Resumen de información revisada por expertos acerca de los factores que pueden afectar el funcionamiento sexual de las personas con cáncer. Se discuten además temas sobre la fecundidad relacionados con el tratamiento del cáncer.

97

Watch Globally, Think Locally CON-CAN Movie Festival  

E-print Network

CORTO TOKYO 2010 Watch Globally, Think Locally 12 18 12 19 12 20 70 CON-CAN Movie Festival CON-CAN Movie Festival Presents www.con-can.com #12;90 COMPETITION 1 : Play Expression COMPETITION 2 : Twilight TOKYO 2010 CON-CAN Movie Festival 151-0051 4-14-4 SK 4F Tel: 03-5414-6532 E-mail : cortokyo

Kasahara, Hironori

98

Teaching Research Service Pros and Cons The Academic Life  

E-print Network

Pros and Cons Motivation An academic job is a multi-faceted one. On the surface, it seems that all weTeaching Research Service Pros and Cons The Academic Life: What Does a Prof Really Do? John Stockie October 3, 2011 The Academic Life 1/13 #12;Teaching Research Service Pros and Cons Outline 1 Teaching 2

Stockie, John

99

Web Spoofing: An Internet Con Game  

NSDL National Science Digital Library

The Safe Internet Programming group at the Princeton University Department of Computer Science in 1996 published a paper on the practice known as "web spoofing," through which an attacker intervenes between an end-user browsing the Web and real Web sites. The attacker sets up a shadow copy of the Web, and as users request pages from sites they will receive pages from the attacker's site instead. This process also enables attackers to gather data (possibly credit card numbers, etc.) submitted through bogus web forms. The nine-page paper describes how the con game works and suggests remedies. The article is available in PostScript, compressed PostScript, Microsoft Word, and zipped Microsoft Word format. Unfortunately, it is not available online as HTML.

Balfanz, Dirk ..; Dean, Drew.; Felten, Edward W.; Wallach, Dan S.

1996-01-01

100

Cervical disc arthroplasty: Pros and cons  

PubMed Central

Background: Cervical disc arthroplasty has emerged as a promising potential alternative to anterior cervical discectomy and fusion (ACDF) in appropriately selected patients. Despite a history of excellent outcomes after ACDF, the question as to whether a fusion leads to adjacent segment degeneration remains unanswered. Numerous US investigational device exemption trials comparing cervical arthroplasty to fusion have been conducted to answer this question. Methods: This study reviews the current research regarding cervical athroplasty, and emphasizes both the pros and cons of arthroplasty as compared with ACDF. Results: Early clinical outcomes show that cervical arthroplasty is as effective as the standard ACDF. However, this new technology is also associated with an expanding list of novel complications. Conclusion: Although there is no definitive evidence that cervical disc replacement reduces the incidence of adjacent segment degeneration, it does show other advantages; for example, faster return to work, and reduced need for postoperative bracing. PMID:22905327

Moatz, Bradley; Tortolani, P. Justin

2012-01-01

101

Tratamiento inmunosupresor de la miastenia gravis con tacrolimus (FK506).  

E-print Network

??La miastenia gravis es una enfermedad autoinmune mediada por anticuerpos anti-receptor de acetilcolina del músculo esquelético. Su tratamiento incluye: La timectomia y la inmunosupresión con… (more)

Abderrazek, Jamal Azem

2006-01-01

102

Tiene familiares con Alzheimer? La Escuela de Medicina del Recinto de Ciencias Mdicas en colaboracin con la Universidad de Columbia  

E-print Network

¿Tiene familiares con Alzheimer? 25/1/2008 La Escuela de Medicina del Recinto de Ciencias Médicas más con Alzheimer para participar de un estudio genético. La investigación pretende encontrar genes que se encuentren relacionados a la enfermedad de Alzheimer con el propósito de aprender más sobre las

Quirk, Gregory J.

103

Cálculos ab initio con correlación electrónica  

NASA Astrophysics Data System (ADS)

Estamos entrando en una era donde la ortogonalidad entre las investigaciones de carácter experimental y de naturaleza teórica se irá difuminando progresivamente y la problemática a resolver quedará en escena como el único actor principal de la obra. Como premisa para una cooperación teórico-experimental de igual a igual, la metodología químico-cuántica utilizada debe ser capaz de ofrecer resultados de carácter predictivo. Sin duda, esta madurez en la metodología químico-cuántica ya la hemos alcanzado hace algunos años, tal y como muestra entre otras muchas, la labor que nuestro grupo ha realizado en el transcurso de la última década, dentro del campo de la Espectroscopía Teórica. Los estudios realizados comprenden una amplia gama de sistemas, variando tanto en tamaño como en complejidad, abordando problemáticas espectroscópicas consideradas tradicionalmente como especialmente controvertidas. Nuestra contribución científica más relevante reside en el carácter cuantitativo de las asignaciones espectroscópicas que hemos propuesto en base a resultados ab initio. Recordemos que en los años noventa los resultados ab initio solían presentar para las energías de excitación de sistemas de tamaño molecular moderado, como el benceno, errores de más de 1 eV. En comparación con el éxito relativo de los métodos semiempíricos, la frustración de la metodología ab initio quedaba todavía más patente. Los estudios que hemos presentado representan una comprensión profunda de los espectros electrónicos en sistemas orgánicos claves, mostrando el camino a seguir para obtener asignaciones espectroscópicas precisas (entre 0.1-0.2 eV). La naturaleza del método CASPT2 junto al diseño de estrategias computacionales nos ha permitido alcanzar el carácter cuantitativo con el que se caracterizan nuestras contribuciones[1,2]. Por todo ello, algunos de los trabajos publicados se consideran clásicos dentro del campo, pues en cierto modo definen el campo, y se reflejan en libros publicados recientemente. En la conferencia se analizarán ciertos pormenores de las investigaciones realizadas. El tipo de aplicaciones llevadas a cabo hasta la fecha se ilustrará mediante el estudio teórico del espectro electrónico de ciclooctatetraeno. Dando un paso más en la evolución de nuestra investigación, pretendemos en la actualidad describir, desde un formalismo teórico y al mismo nivel de exigencia, los mecanismos subyacentes que tienen lugar en las reacciones biológicas fototoinducidas, es decir, reacciones que se inician mediante la absorción de luz[3]. Como muestra de la caracterización de los procesos fotofísicos y fotoquímicos en fotobiología teórica, hemos elegido la descripción de la conversión interna ultrarrápida que tiene lugar en los cromóforos del ADN. Los estados excitados de las moléculas de los ácidos nucleicos presentan tiempos de vida media que se encuentran en el rango de sub-picosegundos, sugiriendo la presencia de un canal ultrarrápido de conversión interna, lo que normalmente se asocia en la fotoquímica contemporánea a una intersección cónica entre el estado excitado y el fundamental[4]. De esta forma nuestro ADN previene de forma eficaz posibles reacciones en el estado excitado y se revela como un excelente protector solar.

Merchán Bonete, M.

104

Breath Analysis Science at PittCon 2012, Orlando, Florida  

EPA Science Inventory

Breath analysis science was featured in three organized sessions at this year?s Pittsburgh Conference and Exposition, or ?PittCon 2012? (http://www.pittcon.org/). As described in previous meeting reports, PittCon is one of the largest international conferences for analytical chem...

105

-okfl ^ ORNL/CON-172 Linear Harmonic Analysis of Free-  

E-print Network

-okfl ^ ORNL/CON-172 OAK RIDGE NATIONAL LABORATORY Linear Harmonic Analysis of Free- Piston. #12;ORNL/CON-172 Engineering Technology Division* LINEAR HARMONIC ANALYSIS OF FREE-PISTON STIRLING/dynamic problem that is associated with a free-piston Stirling engine (FPSE). The governing equations

Oak Ridge National Laboratory

106

Tratamiento cognitivo-conductual para niños mexicanos con fobia social  

Microsoft Academic Search

Participaron 17 niños, entre 7 y 12 años, con fobia social asignados aleatoriamente a 3 condiciones: (a) niños bajo el protocolo Intervención en Adolescentes con Fobia Social (IAFS; Olivares, 2005), (b) el mismo protocolo a los niños e información a sus padres sobre el trastorno, y (c) lista de espera. En evaluaciones de pretest, postest, 3 y 6 meses después,

Flor Gil-Bernal; Laura Hernández-Guzmán

2009-01-01

107

Preserving con dentiality when sharing medical database the Cellsecu system  

E-print Network

containing high quality health related data. It is a gold mine for many researchers working on the healthPreserving con dentiality when sharing medical database the Cellsecu system Yu-Cheng Chiang y named Cellsecu that maintains not only the anonymity but also the con dentiality of each cell

Chen, Sheng-Wei

108

Control del dolor: Apoyo para las personas con cáncer  

Cancer.gov

Contiene información sobre las medicinas contra el dolor para pacientes con cáncer, los planes para controlarlo, cómo hablar con su equipo de atención médica sobre el dolor que usted siente y qué hacer para controlar los efectos físicos y emocionales del mismo.

109

¿COOPERAR EN I+D? CON QUIÉN Y PARA QUÉ  

Microsoft Academic Search

Decidir si cooperar en I+D y con quien hacerlo son los primeros temas que se plantean las empresas cuando emprenden un proyecto conjunto de investigación. El trabajo profundiza en dichas cuestiones estudiando el caso de la industria española. Con una muestra de 1.653 empresas se analiza en primer lugar la independencia de la secuencia de estas deci- siones tras lo

CRISTINA BAYONA SÁEZ

110

October 6, 1997 ITER L-Mode Con nement Database  

E-print Network

October 6, 1997 ITER L-Mode Con nement Database S.M. Kaye and the ITER Con nement Database Working Group Abstract This paper describes the content of an L-mode database that has been compiled with data, and Tore-Supra. The database consists of a total of 2938 entries, 1881 of which are in the L-phase while

111

Control del dolor: Apoyo para las personas con cáncer  

Cancer.gov

Libro sobre el control del dolor en pacientes con cáncer. Cubre los métodos y medicinas, así como los efectos físicos y emocionales del dolor. Es una adaptación cultural para el público de habla hispana del libro en inglés Pain Control.

112

20132014 Career Guide Table of ConTenTs  

E-print Network

. . . . . . . . . . . . . . . . . . . . 6 Career Decision-Making Process . . . . . . . . . . . . . . . . . . 6 Junior Year2013­2014 Career Guide #12;#12;1 #12;2 Table of ConTenTs Introduction to Career services . . . . . . . . . . . . . . . . . . . . . 3 Letter from Career Center Director . . . . . . . . . . . . . . . . . 3 Career

113

Con Edison Commercial and Industrial Energy Efficiency Program  

E-print Network

? Alignment & Compliance Ratings 3 Selected Local Laws and Regulations ? LL 84 - Benchmarking the Energy & Water Efficiency of Buildings ? LL 85 - NYC Energy Conservation Code ? LL 87 - Energy Audits and Retro-commissioning ? LL 88 - Lighting Upgrades... ? Con Edison C&I Energy Efficiency Team ? Program Management and Account Executives ? Lockheed Martin Team ? Marketing, Operations, Engineering and Administration ? Market Partner Network ? Con Edison Customers 6 C&I Program: Three Major...

Pospisil, D.

2011-01-01

114

El objetivo fundamental del ttulo de grado en Sociologa es formar profesionales con el perfil de socilogo, con un conocimiento global en las reas relacionadas con el conocimiento cientfico de las sociedades, y con  

E-print Network

perfil de sociólogo, con un conocimiento global en las áreas relacionadas con el conocimiento científico Programas de las asignaturas: En la guía docente de cada asignatura tienes el "Programa para imprimir Sociología por la Universidad de Alicante Día de la Sociología en la UA: 14 febrero 2014 Capacitación docente

Escolano, Francisco

115

Tratamiento pasivo de aguas de mina con altas  

E-print Network

Tratamiento pasivo de aguas de mina con altas concentraciones de metales Resultados de ensayos en · Metodología · Resultados · Trabajos pendientes #12;Introducción Problemática de las aguas ácidas de mina 2.5 H2O Faja Pirítica Ibérica: · Mayor reserva de pirita del mundo · Aguas ácidas de mina con

Politècnica de Catalunya, Universitat

116

"CON-CON" assignment strategy for highly flexible intrinsically disordered proteins.  

PubMed

Intrinsically disordered proteins (IDPs) are a class of highly flexible proteins whose characterization by NMR spectroscopy is complicated by severe spectral overlaps. The development of experiments designed to facilitate the sequence-specific assignment procedure is thus very important to improve the tools for the characterization of IDPs and thus to be able to focus on IDPs of increasing size and complexity. Here, we present and describe the implementation of a set of novel (1)H-detected 5D experiments, (HACA)CON(CACO)NCO(CA)HA, BT-(H)NCO(CAN)CONNH and BT-HN(COCAN)CONNH, optimized for the study of highly flexible IDPs that exploit the best resolved correlations, those involving the carbonyl and nitrogen nuclei of neighboring amino acids, to achieve sequence-specific resonance assignment. Together with the analogous recently proposed pulse schemes based on (13)C detection, they form a complete set of experiments for sequence-specific assignment of highly flexible IDPs. Depending on the particular sample conditions (concentration, lifetime, pH, temperature, etc.), these experiments present certain advantages and disadvantages that will be discussed. Needless to say, that the availability of a variety of complementary experiments will be important for accurate determination of resonance frequencies in complex IDPs. PMID:25326659

Piai, Alessandro; Hošek, Tomáš; Gonnelli, Leonardo; Zawadzka-Kazimierczuk, Anna; Ko?mi?ski, Wiktor; Brutscher, Bernhard; Bermel, Wolfgang; Pierattelli, Roberta; Felli, Isabella C

2014-12-01

117

Nuevas Iniciativas con los SIG en el Municipio de  

E-print Network

parcelario #12;Mapa resultante de Calificaci�n de Suelos #12;Se cre� un CD con los mapas en formato PDF para) N�mero de Catastro de la parcela Calificaci�n de suelos (zonificaci�n) Par de Coordenadas X,Y en

Gilbes, Fernando

118

NEWS & NOTES Jennifer Keeney's Trio Angelico will perform four con-  

E-print Network

NEWS & NOTES Jennifer Keeney's Trio Angelico will perform four con- certs December 1-9 in Japan- tion. Catherine Baker, Lindsay Fyffe, Sarah Giron, and Kasumi Nakashiima (studio of Jennifer Keeney) also participated. Antonia Rogers (studio of Jennifer Keeney and Krystal Grauvogl (studio of Timothy

Azevedo, Ricardo

119

Portadores nasofaríngeos de Neisseria meningitidis en trabajadores con riesgo ocupacional  

Microsoft Academic Search

Los portadores de Neisseria meningitidis constituyen la principal fuente de infección y transmisión de la enfermedad meningocócica. Conocer su prevalencia, las características de las cepas aisladas y los factores de riesgos asociados con el estado de portador, aportan datos valiosos al control y vigilancia epidemiológica de esta entidad clínica. Para cumplimentar los objetivos propuestos se realizó un estudio transversal descriptivo

Isabel Martínez; Gustavo Sierra; Georgina Pardo; Niurka Álvarez; Marlene Armesto; Mayelín Mirabal

2010-01-01

120

Quantum computing: pro and con BY JOHN PRESKILL  

E-print Network

Quantum computing: pro and con BY JOHN PRESKILL Charles C. Lauritsen Laboratory of High Energy Physics, California Institute of Technology, Pasadena, CA 91125, USA I assess the potential of quantum computation. Broad and important applications must be found to justify construction of a quantum computer; I

Preskill, John

121

Inclusion: The Pros and Cons--A Critical Review  

ERIC Educational Resources Information Center

The purpose of this paper was to review, analyze, and critique the pros and cons, the advantages and disadvantages, of inclusion. The methodology consisted in analyzing and comparing research findings on the benefits and costs of inclusion. Federal legislation and regulations on inclusion were examined, analyzed, and discussed. The results showed…

Savich, Carl

2008-01-01

122

Teaching after Retirement: The Pros and the Cons  

ERIC Educational Resources Information Center

Having enjoyed teaching during my active career, I continued to teach summer school following retirement. Self-observed sensory and cognitive impairments, although not mentioned by students in their evaluations, induced me to consider the pros and cons of continuing to teach. My hope is that this list of benefits and problems will be of assistance…

Sommer, Robert

2014-01-01

123

Teatro en Uruguay: Conversación con Jorge Pignataro Calero  

E-print Network

Cultura. Pero tiene recursos muy magros. Te doy un ejemplo, y tú que vienes de Estados Unidos, te vas a reír cuando te diga la cifra. Con la primera partida, se quiso hacer una distribución: ¡había 43.000 dólares disponibles y 192.000 dólares de...

Bravo-Elizondo, Pedro

1999-10-01

124

ORNL/CON-460 The Evaluation of a 4000-Home  

E-print Network

............................................................................7 1.4.3 Geothermal Heat Pump System Model..........................................................7ORNL/CON-460 The Evaluation of a 4000-Home Geothermal Heat Pump Retrofit at Fort Polk, Louisiana the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; prices available from

Oak Ridge National Laboratory

125

Caracterización de tintas de titanio dopadas con óxidos metálicos  

Microsoft Academic Search

Se prepararon tintas de Diisopropoxido de titanio bis(acetilacetonato) por el método sol-gel para aplicar en la elaboración de nanoestructuras mediante la técnica de escritura directa. Esta técnica permite estructurar materiales con alto índice de refracción a escala micro y nanométrica en tres dimensiones mediante extrusión, para elaborar cristales fotónicos. El tratamiento de las nanoestructuras extruidas a temperaturas elevadas para transformarlas

C. R. TUBÍO; F. GUITIÁN; A. GIL

126

Emergency Factsheet for Tratando Agua Almacenada con Cloro  

E-print Network

Emergency Factsheet for Tratando Agua Almacenada con Cloro Monty C. Dozier, Profesor Asistente y Fertilidad de Suelos El Sistema Universitario Texas A&M Al tratamiento del agua potable para mejorar su contaminaciónbacteriológica del agua. Este método tambiénpuede ser usado por los propietarios de pozos de agua particulares

127

Null alleles for salivary Concanavalin A-binding (Con A) and Po proteins at PRB2 and PRB4 loci  

Microsoft Academic Search

Six closely linked PRP (proline-rich protein) genes code for many salivary PRPs which show frequent null variants especially. The Con polymorphism includes the different sized Con 1 and Con 2 proteins and the null Con 0 form. N-terminal amino acid sequences (60 aa) were determined on Con 1 and Con 2 proteins. From comparison of the protein sequences with those

E. A. Azen; E. Amberger

1994-01-01

128

LunGradCon: The Lunar Graduate Conference  

NASA Astrophysics Data System (ADS)

Members of the Colorado Center for Lunar Dust and Atmospheric Studies (CCLDAS) initiated the Lunar Graduate Conference (LunGradCon), modeled after the highly successful Astrobiology Graduate Conference (AbGradCon). The purpose of this conference is to enhance the professional development of graduate students and early postdoctoral researchers by providing an opportunity to present and discuss scientific research in an environment of their peers. For the first two years, LunGradCon has been held as a one-day conference in conjunction with the NASA Lunar Science Institue's (NLSI) Lunar Science Forum at the NASA Ames Research Center. Activities include an invited overview talk on each of the NASA Lunar Science Institute's three main research areas (OF the Moon, ON the Moon, and FROM the Moon), submitted oral presentations from graduate students and postdoctoral researchers, and networking opportunities with established member of the lunar science community and the NLSI. In each of the first two years of LunGradCon, there have been 20-25 attendees, with about 15 of those presenting submitted talks. Each speaker received feedback forms from the other participants in order to improve on their presentation techniques. Participants also provided feedback on the conference as a whole in order to evaluate the content and provide suggestions for improvement in following years. Overall, the feedback has been extremely positive. This talk will summarize the achievements of past LunGradCons and plans for expansion of the conference to ensure a long-term positive impact on the early careers of future lunar, planetary and space science researchers.

Dove, A.; Poppe, A.; Neish, C.; Fagan, A.; Fuqua, H.; Kramer, G. Y.; Horanyi, M.

2011-12-01

129

The Pros and Cons of RFID in Supply Chain Management  

Microsoft Academic Search

This paper presents the pros and cons of using Radio-Frequency IDentification (RFID) in Supply Chain Management (SCM). While RFID has a greater number of benefits than its predecessor, the bar code, it currently comes at a price that many businesses still consider prohibitive. On the one hand, RFID is advantageous because it does not require line-of-sight scanning, it acts to

Katina Michael; Luke Mccathie

2005-01-01

130

Con Edison - steam operations: Supply and distribution system changes  

SciTech Connect

The abundance of low cost electric purchases and the associated reduction of Con Edison electric generation brings significant financial pressure to transfer portions of the combination steam - electric stations to the steam rate base. Concurrently, cost proportioning in dual system stations has become less favorable to steam customers. This paper details the actions taken to respond to the current electric market and firmly establish the steam supply and distribution system as efficient and reliable in a competitive energy environment.

Badali, V.P.; Ciemniecki, D.L. [Consolidated Edison Company of New York, New York, NY (United States)

1995-09-01

131

Problemas elipticos con condiciones de contorno asintoticamente lineales en infinito  

E-print Network

. Arrieta 1 Rosa Pardo2 Anibal Rodr´iguez-Bernal3 Resumen Analizamos la existencia y estructura de las Steklov la norma del operador T est´e acotada uniformenente, junto con la sublinealidad de la funci´on g´ametro se aproxima a un autovalor de Steklov, la norma del operador T diverge a infinito. Este hecho es una

Rodríguez-Bernal, Aníbal

132

IZ-CON: an intelligent zone controller for building systems operation  

E-print Network

This paper describes the concept of an intelligent zone controller (IZ-CON) for integrated operation of building systems. IZ-CON is intended to deploy a predictive control methodology with embedded simulation capability. Thereby, the scalability...

Mahdavi, A.; Schub, M.

2012-01-01

133

Métodos con información genética para abordar la complejidad del cáncer de pulmón  

Cancer.gov

Se estima que 220 000 personas recibieron un diagnóstico de alguna forma de cáncer de pulmón en 2010. Es la principal causa de muertes relacionadas con el cáncer, con más de 157 000 muertes previstas en 2010.

134

The pathway of lectin-mediated lymphocytotoxicity by Con A-coupled Sepharose beads.  

PubMed

Soluble concanavalin A (Con A) can effectively mediate nonspecific target cell lysis by cytolytic T lymphocytes (LDCC). Because Con A bound to Sepharose beads (Con A-Seph) is also effective, it has been concluded by Z. K. Ballas, W. R. Green, and C. S. Henney. (Cell. Immunol. 59, 411, 1981) that Con A-mediated "activation" of the cytolytic cell to kill in LDCC can occur without intracellular penetration of the lectin. No preincubation of either effector or target cells with Con A-Seph has been performed. Exploiting the previous finding of G. Berke (Immunol. Rev. 72, 5, 1983) that in LDCC Con A exerts its effect(s) strictly by affecting the target rather than by bridging effector and target cells and activating the effector, identical results with Con A-Seph are shown. Preincubation of Con A-Seph with the target but not with the effector cells results in substantial killing. Moreover it is shown that the ability of Con A-Seph to mediate LDCC can be attributed to free Con A dissociating from the beads (about 1%) during the assay. Evidence is presented to indicate that the dissociated Con A, not unlike free Con A, reacts with the target cells, thereby rendering them recognizable by the effector cells. It is concluded that the activity of Con A-Seph may not be taken as evidence for Con A-mediated activation of the cytolytic cell, as suggested by Ballas et al., and that the putative Con A-mediated lymphocyte activation relevant to killing still remains to be demonstrated. Evidence contradicting Con A-mediated activation of the effector and supporting the target cell modification theory has been discussed by G. Berke, V. Hu, E. McVey, and W. R. Clark (J. Immunol. 127, 776, 1981). PMID:6609003

Keren, Z; Berke, G

1984-05-01

135

Global Con guration Stabilization for the VTOL Aircraft with Strong Input Coupling  

E-print Network

In this section, we present our control design method for con guration stabilization of the VTOL aircraft. HereGlobal Con guration Stabilization for the VTOL Aircraft with Strong Input Coupling Reza Olfati Trajectory tracking and con guration stabilization for the VTOL aircraft (vertical take o and landing

Sontag, Eduardo

136

Ventilazione non invasiva con casco o maschera facciale in pazienti immunocompromessi* Uno studio caso-controllo  

Microsoft Academic Search

Scopo dello studio: Comparare l'efficacia della ventilazione invasiva a pressione positiva (NPPV) effettuata con casco e maschera facciale in pazienti immunocompromessi con insufficienza respiratoria acuta ipossiemica (ARF). Disegno dello studio: Studio caso-controllo. Ambientazione: La terapia intensiva generale di un ospedale universitario. Pazienti: Diciannove pazienti immunocompromessi (neoplasie ematologiche (n = 8), pazienti sottoposti a trapianto d'organo (n = 8), pazienti con

Monica Rocco; Donatella Dell' Utri; Andrea Morelli; Gustavo Spadetta; Giorgio Conti; Massimo Antonelli; Paolo Pietropaoli

137

Accesibilidad para personas con debilidad auditiva Linux Ubuntu 10.10  

E-print Network

Accesibilidad para personas con debilidad auditiva Linux Ubuntu 10.10 ASIC ­ 18 de noviembre de 2010 Pág. 1 de 4 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD AUDITIVA EN ENTORNO Linux Ubuntu 10 personas con debilidad auditiva Linux Ubuntu 10.10 ASIC ­ 18 de noviembre de 2010 Pág. 2 de 4 Utilizando el

Fernández de Córdoba, Pedro

138

Accesibilidad para personas con debilidad motriz Linux Ubuntu 10.10  

E-print Network

Accesibilidad para personas con debilidad motriz Linux Ubuntu 10.10 ASIC ­ 18 de noviembre de 2010 Pág. 1 de 7 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD MOTRIZ EN ENTORNO Linux Ubuntu 10- get install dasher" y presione enter. #12;Accesibilidad para personas con debilidad motriz Linux

Fernández de Córdoba, Pedro

139

Courses: Economics (ECON) Page 291Sonoma State University 2010-2011 Catalog eCOn 321 lABOr eCOnOMiCS (4)  

E-print Network

, climate change and the valuation of environmental benefit and costs. Prerequisites: ECON 204 and 205Courses: Economics (ECON) Page 291Sonoma State University 2010-2011 Catalog eCOn 321 lABOr eCOnOMiCS (4) A study of economic and social issues in U.S. labor markets. Topics will include U.S. labor

Ravikumar, B.

140

Do Well, Be Well with Diabetes 2013 1 Formulario de Registro para Personas con Diabetes Formulario de Registro para Personas con Diabetes 2013  

E-print Network

Do Well, Be Well with Diabetes ­ 2013 1 Formulario de Registro para Personas con Diabetes Formulario de Registro para Personas con Diabetes ­ 2013 Si usted NO TIENE diabetes, por favor NO LLENE este sobre diabetes en el Condado de _______________. D. El código postal en mi casa es __ __ __ __ __. E

141

Do Well, Be Well with Diabetes 2013 1 Formulario de Conclusin para Personas con Diabetes Formulario de Conclusin para Personas con Diabetes 201  

E-print Network

Do Well, Be Well with Diabetes ­ 2013 1 Formulario de Conclusión para Personas con Diabetes Formulario de Conclusión para Personas con Diabetes ­ 201 Si usted NO TIENE diabetes, por favor NO LLENE este últimos cuatro números de mi número telefónico son __ __ __ __. C. Marque todas las clases sobre diabetes

142

Obtención de perfiles teóricos de elementos metálicos con velocidades macroscópicas  

NASA Astrophysics Data System (ADS)

El propósito de este trabajo es poder establecer -a partir de la modelización de perfiles de distintas especies- patrones de comparación observacional que permitan caracterizar los fenómenos físicos que están presentes en las estructuras que se observan. Para ello se resuelven las ecuaciones de equilibrio de ionización para un determinado átomo y una atmósfera de parámetros determinados. A partir de ello se definen las poblaciones para los distintos grados de ionización. Considerando distintas configuraciones e intensidades de flujos de masa se deducen la función fuente, el espesor óptico y se calculan los perfiles de las distintas líneas. Se obtuvieron perfiles teóricos de líneas del CII, CIV y del OIV para flujos entrante, saliente y pasante. La forma del perfil, las intensidades relativas entre los distintos flujos y el corrimiento Doppler da cuenta de una caracterización teórica a partir de la cual se comparará con observaciones.

Cirigliano, D.; Costa, A.; Rovira, M.

143

Con A-induced suppressor cells in children with acute lymphoblastic leukaemia.  

PubMed Central

The function of Con A stimulation was investigated in patients with ALL in remission and in patients with ALL in the acute phase of the disease as compared to healthy controls. Suppression of the Con A response brought about by autologous Con A-activated cells was significantly lower in ALL patients in remission (mean value 29.33%) and in the acute phase (mean value 10%) than in the controls (mean value 64.86%). Suppression of the Con A stimulation of control lymphocytes by Con A-activated homologous cells of ALL patients had a mean value of 51.65%. This was significantly higher than the suppression obtained by the same ALL cells in the autologous system and of the same order of magnitude as the suppression obtained by control Con A-activated cells on control Con A stimulation (57.67%). Suppression of the Con a response of ALL lymphocytes produced by control Con A-activated cells was 23.17% and comparable to healthy controls. These results demonstrate that the function of Con A-induced suppression is significantly lower in ALL patients. They further indicate that at least two cell types are involved in this kind of suppression in humans. PMID:6448114

Eibl, M; Krepler, P; Schmidmeier, W; Zielinski, C; Winterleitner, H

1980-01-01

144

Gleevec disminuye la recidiva del cáncer en pacientes con tumor estromal gastrointestinal primario  

Cancer.gov

Los resultados preliminares de un estudio clínico grande aleatorio y controlado con placebo, en pacientes con tumor estromal gastrointestinal (GIST) primario, un tipo de tumor que por lo general se encuentra en el estómago o en el intestino delgado, demostraron que los pacientes a los que se administró mesilato de imatinib (Gleevec®) luego de la extirpación total de su tumor tuvieron una probabilidad significativamente menor de padecer una recidiva del cáncer en comparación con aquellos a los que no se administró imatinib.

145

Identification of differentially expressed genes in Con A-activated Carp ( Cyprinus carpio L.) leucocytes  

Microsoft Academic Search

A cDNA library was constructed from the message RNA (mRNA) obtained from Con A-induced head kidney (HK) leucocytes of carp (Cyprinus carpio L.). Differential screening of the cDNA was carried out by hybridization against the total cDNA probes from normal, Con A-uninduced HK leucocytes or Con A-induced HK leucocytes of carp. The differential expression patterns of certain cDNA clones were

Z. Yin; J. Y. He; Z. Gong; T. J. Lam; Y. M. Sin

1999-01-01

146

Efficacia dell'Ezetimibe in Soggetti Trattati con LDL Aferesi Selettiva.  

E-print Network

??Le Dislipidemie ereditarie costituiscono un’emergenza socio sanitaria perché sono le malattie ereditarie più frequenti e generano il 76% dei pazienti con patologia vascolare aterosclerotica precoce… (more)

Calvaruso, Silvia

2007-01-01

147

Immune cascades in human intervertebral disc: the pros and cons  

PubMed Central

The unique structural hallmark of the intervertebral disc has made its central composition, the nucleus pulposus (NP), excluded from the immunologic tolerance. Consequently, the intervertebral disc is identified as an immune-privileged organ. Traditionally, local detrimental immune activities caused by NP at the lesion sites of the disc are noted as a significant factor contributing to disc degeneration. However, given the beneficial activities of immune cells in other immune-privileged sites on basis of current evidence, the degenerate disc might need the assistance of a subpopulation of immune cells to restore its structure and lessen inflammation. In addition, the beneficial impact of immune cells can be seen in the absorption of the herniated NP, which is an important factor causes the mechanical compression of nerve roots. Consequently, a modulated immune network in degenerate disc is essential for the restoration of this immune-privileged organ. Until now, the understandings of immune response in disc degeneration still rest on the harmful aspect. Further studies are needed to explore its beneficial influence. Accordingly, there are no absolutely the pros and cons in terms of immune reactions caused by NP. PMID:23696917

Sun, Zhen; Zhang, Ming; Zhao, Xu-Hong; Liu, Zhi-Heng; Gao, Yang; Samartzis, Dino; Wang, Hai-Qiang; Luo, Zhuo-Jing

2013-01-01

148

Percutaneous coronary intervention in nonagenarians: pros and cons  

PubMed Central

Percutaneous coronary intervention is a mainstay in the management of symptomatic or high-risk coronary artery disease. The bulk of clinical evidence and experience underlying this fact relies, however, on relatively young patients. Indeed, few data of very limited quality are available which adequately define the risk-benefit and cost-benefit profile of coronary angioplasty and stenting in very old subjects, such as those of 90 years of age or older (i.e., nonagenarians). The aim of this review is to provide a concise, yet practical, synthesis of the available evidence on percutaneous coronary revascularization in the very elderly. The main arguments elaborated upon are to what extent we can extrapolate findings from studies including younger patients to nonagenarians, whether we should provide higher priority to prognosis or quality of life in such patients, and whether we can afford to allocate vast resources to care for such subjects in an era of financial constraints. Our review of 18 studies and 1082 patients suggest that percutaneous coronary intervention is feasible and associated with acceptable short- and long-term results in this population, which is nonetheless fraught with a high mortality risk irrespective of the revascularization procedure. Accordingly, the pros and cons of percutaneous coronary intervention should be carefully weighed when considering this treatment in nonagenarians. PMID:23610578

Biondi Zoccai, Giuseppe; Abbate, Antonio; D'Ascenzo, Fabrizio; Presutti, Davide; Peruzzi, Mariangela; Cavarretta, Elena; Marullo, Antonino G.M.; Lotrionte, Marzia; Frati, Giacomo

2013-01-01

149

Five payment models: the pros, the cons, the potential.  

PubMed

Among the leading strategies to reform health care is the development and implementation of new payment models. The goal is to change the way physicians, hospitals, and other care providers are paid in order to emphasize higher quality at lower costs--in other words, to improve value. In an effort to build on its health care reform activities that began in 2005, the Minnesota Medical Association convened a work group in 2010 to develop recommendations on how payment reform can best be advanced. Among the work group's output was a comparative review of five payment models with respect to how they can support a value-driven health care system. This article summarizes the pros and cons of the five models--fee for service, pay for coordination, pay for performance, episode or bundled payment, and comprehensive care or total cost of care payment. It also offers the work group's recommendations for how these models might be applied in a reformed health care system. PMID:21462667

Silversmith, Janet

2011-02-01

150

Meeting Report: Breath Biomarkers Networking Sessions at PittCon 2010, Orlando, Florida  

EPA Science Inventory

The Pittsburgh Conference and Exposition, or "PittCon" (www.pittcon.org/), is one of the largest international conferences for analytical chemistry and instrumentation typically attracting about 25,000 attendees and 1,000 commercial exhibitors. PittCon began in 1950 as a small sp...

151

Efecto del suelo en la tasa de crecimiento de especies tropicales con distribuciones contrastantes  

E-print Network

1 Efecto del suelo en la tasa de crecimiento de especies tropicales con distribuciones contribuir a limitar la distribución de las especies. Uno de ellos es la fertilidad del suelo, la que con frecuencia es menor en los bosques más húmedos. Para evaluar el posible rol de la fertilidad del suelo en la

Bermingham, Eldredge

152

A National Look at Postmodernism's Pros and Cons in Educational Leadership  

ERIC Educational Resources Information Center

The purpose of this article is to take a look at the pros and cons of postmodernism. It is imperative for administrators to closely examine educational theories and practices prior to instituting changes. The ability to read and digest challenging material keeps one informed and prepared to lead effectively. This paper will list the pros and cons…

Townsell, Rhodena

2007-01-01

153

Bienvenidos a Columbia Dental: En Columbia Dental estamos comprometidos en proveerle con cuidado dental de altura.  

E-print Network

Bienvenidos a Columbia Dental: En Columbia Dental estamos comprometidos en proveerle con cuidado dental de altura. Columbia Dental le ofrece una amplia variedad de servicios dentales en todos nuestros departamentos especializados, incluyendo Implantes Dentales. Su primera cita en Columbia Dental será con un

Grishok, Alla

154

Accesibilidad para personas con debilidad visual Google Chrome 8.0.552.224  

E-print Network

Accesibilidad para personas con debilidad visual Google Chrome 8.0.552.224 ASIC ­ 13 de Diciembre de 2010 Pág. 1 de 3 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD VISUAL EN GOOGLE CHROME 8 accedido a Google Chrome pulsamos en la llave inglesa y dentro de esta marcamos Opciones. Figura 1 Como

Fernández de Córdoba, Pedro

155

Diventa Social Media Trainer Aumenta le tue possibilit occupazionali con competenze Web 2.0 e  

E-print Network

Diventa Social Media Trainer · Aumenta le tue possibilità occupazionali con competenze Web 2.0 e marketing. Perché partecipare: · Riceverai una Formazione per diventare un Social Media Trainer formative, aiutando un membro dello staff aziendale a familiarizzare con gli strumenti Social Media. Questo

Robbiano, Lorenzo

156

GUIA VISUAL TRANSIN 0.-ESTRUCTURA Y JERARQUA DE LA MODELACIN CON  

E-print Network

1 GUIA VISUAL TRANSIN #12;2 INDICE 0.- ESTRUCTURA Y JERARQUÍA DE LA MODELACI�N CON VISUAL TRANSIN) .......................................................................................... 89 #12;3 0.- ESTRUCTURA Y JERARQUÍA DE LA MODELACI�N CON VISUAL TRANSIN BASE DE DATOS: Toda la

Politècnica de Catalunya, Universitat

157

Optimal Phase Con ict Removal for Layout of Dark Field Alternating Phase Shifting Masks  

E-print Network

-coloring and compaction approach that simultaneously optimizes layout and phase assignment which is based the number of phase con icts that must be removed to ensure 2-colorability of the con ict graph. We reduce-shifting mask technology with negative photoresist. It also matches very well with the requirements

Zelikovsky, Alexander

158

La medicina nucleare nell'analisi delle malattie cardiovascolari nei pazienti con insufficienza renale cronica  

Microsoft Academic Search

Le malattie cardiovascolari sono molto comuni nei soggetti con insufficienza renale cronica (IRC). La mortalità cardiovasco- lare nei pazienti in trattamento dialitico è 10-30 volte più alta di quella della popolazione generale. Le tecniche di medicina nucleare costituiscono un momento fondamentale nella diagnosi, nella stratificazione prognostica, nel follow-up e nella valu- tazione degli effetti della terapia in pazienti con malattia

M. Spadafora; V. Cuccurullo; P. F. Rambaldi; P. Miletto; L. Mansi

2005-01-01

159

ccsd00001226 Ultracold atoms con ned in rf-induced two-dimensional trapping potentials  

E-print Network

ccsd­00001226 (version 1) : 29 Feb 2004 Ultracold atoms con#12;ned in rf-induced two atoms proposed by O. Zobay and B. M. Garraway [1]. It relies on adiabatic potentials for atoms dressed by a rf #12;eld in an inhomogeneous magnetic #12;eld. This trap is well suited to con#12;ne atoms tightly

160

Per: Chirapaq celebra 25 aos con un foro sobre "Derechos de los Pueblos Indgenas"  

E-print Network

Perú: Chirapaq celebra 25 años con un foro sobre "Derechos de los Pueblos Indígenas celebrará su 25 aniversario con el foro público internacional: "Derechos de los Pueblos Indígenas: Avances y la Nación Cree, ex parlamentario y miembro del Mecanismo de Expertos sobre los Derechos de los

Islas, León

161

Resolution of Con icts Involving Many Aircraft via Semide nite Programming  

E-print Network

of aircraft navigation and auto- mated guidance particularly easy, although recent accidents seem to have been structure of the aircraft routing system allows to set a priori guarantees on aircraft con ict geometriesResolution of Con icts Involving Many Aircraft via Semide nite Programming E. Frazzoli Z.-H. Mao y

Feron, Eric

162

Antibiotic susceptibility of coagulase-negative staphylococci (CoNS): emergence of teicoplanin-non-susceptible CoNS strains with inducible resistance to vancomycin.  

PubMed

Coagulase-negative staphylococci (CoNS) have become increasingly recognized as important agents of nosocomial infection. One of the characteristics of CoNS is their resistance to multiple antimicrobial agents commonly used for the treatment of staphylococcal infections. CoNS strains (n?=?745) isolated from a university teaching hospital in China between 2004 and 2009 were tested for antibiotic resistance. The antibiotics were placed into three categories based on resistance levels of the CoNS strains to these antibiotics: high resistance (resistance rate >70?%), including penicillin G, oxacillin and erythromycin; medium resistance (resistance rate between 30 and 70?%), including tetracycline, clindamycin, ciprofloxacin, trimethoprim/sulfamethoxazole and chloramphenicol; and low resistance (resistance rate <30?%), including rifampicin, ceftizoxime and gentamicin. We also found that the prevalence of strains non-susceptible to teicoplanin increased from 4.5 to 6.7?% between 2008 and 2009. A one-step vancomycin agar selection experiment and subsequent population analysis revealed potentially vancomycin-resistant subpopulations that have been selected from the teicoplanin-non-susceptible strains. Vigilant surveillance of nosocomial isolates of CoNS is needed to determine their resistance to glycopeptides. PMID:21799199

Ma, Xiao Xue; Wang, En Hua; Liu, Yong; Luo, En Jie

2011-11-01

163

Medio EMJH modificado para el cultivo de Leptospira interrogans serogrupo Ballum  

Microsoft Academic Search

Modified EMJH medium for cultivation of Leptospira interrogans serogroup Ballum. Strains within the Ballum serogroup of spirochete Leptospira show fastidious growth with more exigent nutritional requirements than those of other Leptospira pathogenic strains. The influence of 37 nutritional compounds on the growth of Leptospira interrogans serogroup Ballum was investigated employing the synthetic EMJH medium as the base for the study.

A. GONZÁLEZ; R. BORRERO; J. RUIZ; N. BATISTA; Y. FERNÁNDEZ; Y. VALDÉS; M. GONZÁLEZ

164

'El teatro es un camino de autoconocimiento': Entrevista con Liuba Cid, directora teatral cubana  

E-print Network

teatral muy concreta y que fue el contacto con Eugenio Barba, el teatrista italiano. Esto delimitó muy bien, no mi camino pues yo todavía no sé qué va a pasar en mi futuro, pero sí cómo debía trabajar y hacia dónde debía enfocar mi trabajo. Algo así... mi versión de su MedeamateriaU un excelente texto. Luego trabajé con otros materiales, como Rivera despojada y Paisaje con argonautas. Precisamente mi tesis de grado fue un texto espectacular sobre la obra de Heiner Muller que se llamó "La edad de...

Bravo-Elizondo, Pedro

1994-10-01

165

'El teatro me ha dejado a mí': Una entrevista con Antón Arrufat"  

E-print Network

SPRING 1999 143 "El teatro me ha dejado a mí": Una entrevista con Antón Arrufat Nancy Christoph [Antón Arrufat nació en Santiago de Cuba en 1935. Además de ser dramaturgo, es poeta y narrador. Su obra dramática incluye: El cave se investiga... con el teatro. Hace años que no escribo teatro. Recibí muy males reacciones. El teatro me creó problemas de carácter político, y dejé de escribirlo.1 Era un género que escribía con mucha facilidad, y que me gustaba hacer. Es el que menos trabajo me...

Christoph, Nancy

1999-04-01

166

Persisten las diferencias de cáncer de seno en hispanas con el mismo acceso a la atención médica  

Cancer.gov

Con el mismo acceso a servicios médicos, persisten las diferencias en cuanto al tamaño, el estadio y el grado del cáncer de seno en las mujeres hispanas en comparación con las mujeres blancas no hispanas.

167

Radioterapia extema radical en cáncer infiltrante de vejiga en pacientes geriátricos con contraindicación médica para la cirugía: experiencia institucional  

Microsoft Academic Search

Resumen  Se analiza retrospectivamente la tolerancia y el control tumoral en pacientes con cáncer infiltrante de vejiga cuya única\\u000a alternativa terapéutica radical es la radioterapia externa.\\u000a \\u000a Cuarenta y siete pacientes (3 mujeres y 44 varones), con contraindicación para cistectomía, fueron tratados con radioterapia\\u000a externa con intención curativa. Cuarenta (85%) tenían una edad al diagnóstico ? 70 años. Nueve presentaban performance status

Raúl Matute Martín; Arnaldo Alvarado Astudillo; Nuria E. Martínez Moreno; José A. Arranz Arija; Marina Gómez Espí; Dolores de la Mata Moya; Esperanza Lozano Guerra; Javier Serrano Andreu; Rafael Herranz Crespo; Manuel Felipe A. Calvo

2002-01-01

168

Administracin Nacional de Aeronutica y del Espacio Descubra la relacin que tiene el espacio con usted  

E-print Network

fuego Materiales con autoiluminación MEDICINA Y SALUD Diodos emisores de luz (LED) Termómetros MEDICINA Y SALUDZONA COSTERA Búsqueda y rescate en el mar Monitoreo de inundaciones Técnicas de limpieza de

169

ConSurf 2010: calculating evolutionary conservation in sequence and structure of proteins and nucleic acids  

PubMed Central

It is informative to detect highly conserved positions in proteins and nucleic acid sequence/structure since they are often indicative of structural and/or functional importance. ConSurf (http://consurf.tau.ac.il) and ConSeq (http://conseq.tau.ac.il) are two well-established web servers for calculating the evolutionary conservation of amino acid positions in proteins using an empirical Bayesian inference, starting from protein structure and sequence, respectively. Here, we present the new version of the ConSurf web server that combines the two independent servers, providing an easier and more intuitive step-by-step interface, while offering the user more flexibility during the process. In addition, the new version of ConSurf calculates the evolutionary rates for nucleic acid sequences. The new version is freely available at: http://consurf.tau.ac.il/. PMID:20478830

Ashkenazy, Haim; Erez, Elana; Martz, Eric; Pupko, Tal; Ben-Tal, Nir

2010-01-01

170

Where's the Beef? ConAgra's Approach to Energy Sources & Efficiency in Meat Processing  

E-print Network

strategy which builds our business while preserving our natural resources. ConAgra Beef has been heavily involved in sustainable development efforts since the formal process was implemented in 1995. Throughout the beef processing operation...

Kananen, T. M.

171

Pliocene to recent stratigraphy of the Cuu Long and Nam Con Son Basins, offshore Vietnam  

E-print Network

The Cuu Long and Nam Con Basins, offshore Vietnam, contain sediment dispersal systems, from up-dip fluvial environments to down-dip deep-water slope and basinal environments that operated along the southern continental margin of Vietnam during...

Yarbrough, Christopher Neil

2006-08-16

172

EFECTOS DE DOS DIETAS ENRIQUECIDAS CON ACEITES (SOJA Y OLIVA) SOBRE PARÁMETROS MORFOMÉTRICOS Y CONDUCTUALES DE RATAS HEMBRAS SUBNUTRIDAS TEMPRANAMENTE  

Microsoft Academic Search

Este estudio analiza el papel del aceite de soja y oliva en la rehabilitación de ratas hembras subnutri- das «in utero» y durante la lactancia. A los 20 días de edad y durante un período de 70 días, los animales sub- nutridos fueron alimentados con 3 dietas diferentes: estándar, estándar enriquecida con aceite de soja (7%) y estándar enriquecida con

Celestino González; Serafina Fernández; Ángeles Menéndez-Patterson

173

Interferon-?con-1 Treatment of Three Patients with Severe Glucocorticoid-Dependent Asthma  

Microsoft Academic Search

We report herein the therapeutic effect of interferon (IFN)-?con in three patients with severe persistent asthma and long-term oral glucocorticoid treatment. IFN-?con (9 ?g) administered subcutaneously thrice a week over a period of more than 24 months led to a substantial clinical improvement with regard to the number of daily asthma attacks, nighttime disturbance, emergency visits and hospitalizations. In addition,

Claus Kroegel; Nicole Bergmann; Martin Foerster; Grefachew Workalemahu; Andreas Machnik; Bettina Mock; Angelika Reissig

2006-01-01

174

Quimioterapia de alta dosis prolonga en forma significativa la supervivencia en pacientes con leucemia mieloide aguda  

Cancer.gov

Los resultados preliminares de un estudio clínico grande con asignación al azar de pacientes de 16 a 60 años de edad con leucemia mieloide aguda (LMA), un cáncer de la sangre y de la médula ósea, que no había sido tratada anteriormente, muestran que los pacientes que recibieron una alta dosis de daunorrubicina, un fármaco de quimioterapia disponible comercialmente, durante la terapia inicial vivieron más que los pacientes que recibieron una dosis normal del mismo fármaco.

175

El tratamiento con cloro es un mtodo para desinfectar un pozo de agua. Se recomien-  

E-print Network

El tratamiento con cloro es un método para desinfectar un pozo de agua. Se recomien- da cuando un sistema de agua está contam- inado con bacterias. La contaminación puede ocurrir en la instalación del exceso de lluvia entran en el pozo. Si el agua subterránea constituye en sí la fuente de bacterias, el

176

ConSite: web-based prediction of regulatory elements using cross-species comparison  

Microsoft Academic Search

ConSite is a user-friendly, web-based tool for finding cis-regulatory elements in genomic sequences. Predictions are based on the integration of binding site prediction generated with high-quality transcrip- tion factor models and cross-species comparison filtering (phylogenetic footprinting). By incorporat- ing evolutionary constraints, selectivity is increased by an order of magnitude as compared to single- sequence analysis. ConSite offers several unique features,

Albin Sandelin; Wyeth W. Wasserman; Boris Lenhard

2004-01-01

177

Comparison of consumer exposure modelling tools. Inventory of possible improvements of ConsExpo  

Microsoft Academic Search

ConsExpo is a suitable computer software programme with mathematical\\u000amodels for assessing the exposure of consumers to chemicals in consumer\\u000aproducts. This tool can be further improved by adopting certain features\\u000afrom other existing consumer exposure modelling tools.\\u000aIn ConsExpo, different routes of exposure are taken into account, such as\\u000athe route via the skin, and through inhalation and oral

Delmaar JE; Engelen JGM van

2007-01-01

178

Concetti di ipnoterapia sistemica per l'interazione con i clienti depressi e con i loro sistemi-relazionali: dalla depressione ai mondi correlati  

Microsoft Academic Search

Dalla prospettiva dell'ipnoterapia sistemica, la depressione può essere valutata come informazione sui bisogni negati e sui conflitti di lealtà. Questo lavoro mostra come le ipnoterapie focalizzate sulle competenze siano di aiuto nel lavoro con i clienti depressi per riattivare e reintegrare costruttivamente nel sistema relazionale quelle abilità dissociate a livello inconscio. Verrà descritto, attraverso un caso esemplare, il tipico procedimento

Gunther Schmidt

179

Estudio de los NIH señala una relación de la tomografía computarizada (TC) en la infancia con leucemia y con cáncer de cerebro más tarde  

Cancer.gov

Niños y adultos jóvenes a quienes se les hicieron exploraciones muchas veces con tomografía computarizada (TC), una herramienta de diagnóstico de uso frecuente, tienen un riesgo ligeramente mayor de padecer leucemia y tumores cerebrales en la década posterior a su primera tomografía.

180

Evaluation of the ACT*DE*CON{sup SM} process for treating gunite tank sludge  

SciTech Connect

A test was conducted to evaluate this process for selectively removing actinides from Gunite tank sludge. Mixed waste sludge from Gunite tank W-6 was subjected to the ACT*DE*CON selective leaching process. (Nearly all the TRU content was attributed to Pu.) The sludge sample was first washed with 0.01M NaOH to remove excess sodium and nitrate in the interstitial liquid supernatant. The washed wet solids were treated with the ACT*DE*CON solvent (aqueous carbonate solution containing a chelating agent and an oxidant), using a ratio of 20 ml solvent per gram wet solids. Sludge and solvent were separated by centrifugation, and the ACT*DE*CON treatment was repeated twice. Analyses showed that 71% of the solids in the sludge were dissolved while 80% of the TRU-waste components dissolved. Low separation of the TRU-waste components from other components of the sludge mixture is indicated. Almost all the U and Ca were removed from the sludge. For sludges where most of the TRU content is Pu, the ACT*DE*CON process as tested is not effective in rendering the sludge a non-TRU waste. It is recommended that ACT*DE*CON be optimized for this specific application and that other processes using different chelating and oxidizing agents be tested. Also, the ACT*DE*CON process should be tested on TRU mixed waste in which most of the TRU elements are not Pu.

Spencer, B.B.; Chase, C.W.; Egan, B.Z.

1996-05-01

181

SLUDGE PARTICLE SEPAPATION EFFICIENCIES DURING SETTLER TANK RETRIEVAL INTO SCS-CON-230  

SciTech Connect

The purpose of this document is to release, into the Hanford Document Control System, FA1/0991, Sludge Particle Separation Efficiencies for the Rectangular SCS-CON-230 Container, by M. Epstein and M. G. Plys, Fauske & Associates, LLC, June 2009. The Sludge Treatment Project (STP) will retrieve sludge from the 105-K West Integrated Water Treatment System (IWTS) Settler Tanks and transfer it to container SCS-CON-230 using the Settler Tank Retrieval System (STRS). The sludge will enter the container through two distributors. The container will have a filtration system that is designed to minimize the overflow of sludge fines from the container to the basin. FAI/09-91 was performed to quantify the effect of the STRS on sludge distribution inside of and overflow out of SCS-CON-230. Selected results of the analysis and a system description are discussed. The principal result of the analysis is that the STRS filtration system reduces the overflow of sludge from SCS-CON-230 to the basin by roughly a factor of 10. Some turbidity can be expected in the center bay where the container is located. The exact amount of overflow and subsequent turbidity is dependent on the density of the sludge (which will vary with location in the Settler Tanks) and the thermal gradient between the SCS-CON-230 and the basin. Attachment A presents the full analytical results. These results are applicable specifically to SCS-CON-230 and the STRS filtration system's expected operating duty cycles.

DEARING JI; EPSTEIN M; PLYS MG

2009-07-16

182

Con-specific neighbours may enhance compensation capacity in an invasive plant.  

PubMed

Facilitation, both by inter- and intra-specific neighbours, is known to be an important process in structuring plant communities. However, only a small number of experiments have been reported on facilitation in plant invasions, especially between invasive con-specific individuals. Here, we focus on how con-specific neighbours of the invasive alien plant alligator weed affect the tolerance of alligator weed to herbivory by the introduced biological control agent, Agasicles hygrophila. We conducted greenhouse and garden experiments in which invasive plant density and herbivory intensity (artificial clipping and real herbivory) were manipulated. In the greenhouse experiment, artificial clipping significantly reduced plant biomass when plants were grown individually, but when con-specific neighbours were present in the same pot, biomass was not significantly different from control plants. Similarly, when compared to control plants, plants that were subjected to herbivory by A. hygrophila produced more biomass when grown with two con-specific neighbours than when grown alone. Real herbivory also resulted in an increased number of vegetative buds, and again when two con-specific neighbours were present this effect was increased (a 55.3% increase in buds when there was no neighbour, but a 111.6% increase in buds when two con-specific neighbours were present). In the garden experiment, in which plants were grown at high density (6 plants per pot), alligator weed fully recovered from defoliation caused by insects at levels from 20-30% to 100%. Our results indicate that the con-specific association may increase the compensatory ability to cope with intense damage in this invasive plant. PMID:20522180

Lu, X; Dai, H; Ding, J

2010-05-01

183

BriTTen fesTival ClassiC ConCerT series  

E-print Network

C ConCerT series early mUsiC series paCifiCa qUarTeT ConTempo jazz aTThe logan mUsiC aCross genres.uchicago.edu (Tickets/Flexible Series). oUr arTisTiC VarieTy enjoy a range of musical styles and genres, including our.uchicago.edu Now is the time to buy tickets to hear your kind of music, on your schedule, at prices you'll love

Butler, Laurie J.

184

Universality theorems for con guration spaces of planar Michael Kapovich and John J. Millson  

E-print Network

Universality theorems for con guration spaces of planar linkages Michael Kapovich and John J L0 so that M(L0) is Nash isomorphic to a disjoint union of a nite number of copies of X. Remark 1.1. Nash isomorphism is de ned in x2. Nash isomorphism implies real analytic isomorphism. Similarly we have

Millson, John

185

Non Invasive Biomedical Analysis - Breath Networking Session at PittCon 2011, Atlanta, Georgia  

EPA Science Inventory

This was the second year that our breath colleagues organized a networking session at the Pittsburgh Conference and Exposition or ''PittCon'' (http://www.pincon.org/).This time it was called "Non-invasive Biomedical Analysis" to broaden the scope a bit, but the primary focus rema...

186

ANTICUERPOS ANTI 21 HIDROXILASA SERICOS EN PACIENTES CON ANTICUERPOS ANTIFRACCION MICROSOMAL SINDROME POLIENDOCRINO AUTOINMUNE  

Microsoft Academic Search

Resumen El síndrome poliendocrino autoinmune (SPA) es la asociación de enfermedades endocrinas autoinmu- nes con otros desórdenes autoinmunes no endocrinos. Los tipos 1, 2 y 4 presentan adrenalitis autoinmune, esto indica la presencia de autoanticuerpos, y su marcador serológico específico es el anti 21 hidroxilasa (a21-OH). El SPA tipo 2 es la asociación de adrenalitis, enfermedad tiroidea y\\/o diabetes mellitus

SILVIA BOTTA; SILVANA ROVETO; DANIEL RIMOLDI

187

phosphorylation at these sites, disrupted effects of glucose on CRTC2 activity in hepatocytes, con-  

E-print Network

phosphorylation at these sites, disrupted effects of glucose on CRTC2 activity in hepatocytes, con expression (G6Pase) in hepatocytes (Fig. 4A and fig. S8). Conversely, RNAi-mediated knockdown of OGT blocked-GlcNAcase (GCA) (12). Expression of adenovirally encoded GCA (Ad-GCA) in hepatocytes reduced amounts of OG-CRTC2

Nizet, Victor

188

Accordo con Teatridithalia (1) Stagione ELFO PUCCINI 2013/2014. AGEVOLAZIONI E PREZZI RIDOTTI  

E-print Network

Accordo con Teatridithalia (1) Stagione ELFO PUCCINI 2013/2014. AGEVOLAZIONI E PREZZI RIDOTTI PUCCINI 2013/2014, il biglietto per le sale del Teatro Elfo Puccini è ridotto da 30,50 a 21,50; Per la Stagione Elfo Puccini, i giovani fino a 25 anni e gli anziani oltre i 65 anni hanno diritto ad un biglietto

De Cindio, Fiorella

189

Nitrogen is present in the environment in many forms. The earth's atmosphere con-  

E-print Network

nitrogen compounds that are convert- ed to nitrates in the soil. Nitrates dissolve easily in water and canNitrogen is present in the environment in many forms. The earth's atmosphere con- sists of 70 percent nitrogen. When nitrogen interacts with another element in the environment, it changes form

190

The Solutions of LCD Panel (T-Con) EMI Noise for Wireless Integration  

Microsoft Academic Search

Electromagnetic interference (EMI) from a LCD panel deteriorates the performance of wireless network system (including Wireless network cards: Wireless Local Area Network (WLAN) card and Wireless Wide Area Network (WWAN) card) in a notebook. One of the main EMI noise source for the wireless network system in a liquid crystal display (LCD) panel is the timing controller IC (T-Con). In

Sung-Kyu Lee; Jung-man Lim; Ki-Seob Lee; On-Sik Choi; Bae-Won Lee; Do-Wan Kim; Masashi Hayakawa; Yoshio Kami

2007-01-01

191

DISEÑO DE UN PLAN DE CAPACITACIÓN CON ENFOQUE DE GÉNERO PARA LA COMUNIDAD COSTERA DE CASCARERO  

Microsoft Academic Search

En la Comunidad costera de Cascarero del Municipio Jesús Menéndez, se detectó que existen condiciones desfavorables para lograr la equidad de género, influyendo diversos factores. De ahí que se investigó el proceso para favorecer la equidad de género con el propósito de resolver la insuficiente incorporación de la mujer en actividades económicas, políticas y sociales, por ello el trabajo de

Aiblis Susel Vidal Marrero; Yasenny Bravo Sánchez

2010-01-01

192

HÁBITOS DE ESTUDIO, ACTITUDES Y AUTOESTIMA RELACIONADOS CON RENDIMIENTO ACADÉMICO EN ESTUDIANTES DE ENFERMERÍA  

Microsoft Academic Search

Determinar la relación que existe entre hábitos de estudio, actitudes y autoestima con el rendimiento académico de los estudiantes de la Facultad de Enfermería de la Universidad Veracruzana. METODOLOGÍA: Diseño de investigación descriptivo, correlacional. La población estuvo constituida por 377 estudiantes inscritos durante el periodo Febrero – Julio, 2010. El tipo de muestreo fue probabilístico estratificado; la muestra fue de

Fabiola Cruz Núñez

2010-01-01

193

DISPOSITIVOS INTRAUTERINOS CON LEVONORGESTREL: UNA NUEVA ALTERNATIVA TERAPÉUTICA EN EL SANGRADO UTERINO ANORMAL DE ORIGEN ORGÁNICO  

Microsoft Academic Search

RESUMEN El uso de dispositivos intrauterinos con levonorgestrel (DIU-LNG) además de su efecto anticoncepti- vo, disminuye significativamente el sangrado uterino. Esto hace que los DIU-LNG expresen beneficios tales como el control del sangrado uterino, especialmente en metrorragias o menometrorragias por enfermedades orgánicas como miomatosis uterina. Sin embargo, en nuestro medio existen dudas sobre los beneficios reales de estos métodos y

2004-01-01

194

Percentile bootstrap con...dence intervals Suppose that a quantity = (F) is of interest and that  

E-print Network

Percentile bootstrap con...dence intervals Suppose that a quantity = (F) is of interest and that Tn = (the empirical distribution of Y1; Y2; : : : ; Yn) Based on B bootstrapped values Tn1; Tn2; : : : ; Tn points for the histogram/empirical distribution of the B bootstrapped values). For kL = j 2 (B + 1) k

Vardeman, Stephen B.

195

The Con Edison Emergency Child Care Plan for Management Employees: Summary Plan Description.  

ERIC Educational Resources Information Center

This summary plan description offers guidelines for participation in a pilot program that provides short-term emergency care for children of Con Edison managers who are under 13 years old. The plan offers professional, in-home child care that can be used when usual arrangements have collapsed. The summary plan description addresses the following…

Consolidated Edison Co., Brooklyn, NY.

196

Una entrevista con Inés Margarita Stranger (Chile) y sus personajes femeninos  

E-print Network

FALL 1996 89 Una entrevista con Inés Margarita Stranger (Chile) y sus personajes femeninos Pedro Bravo-Elizondo A la fecha, su vida contempla un título como teatrista por la Universidad Católica de Chile en la cual es profesora en la Escuela de...

Bravo-Elizondo, Pedro

1996-10-01

197

Investigating Mould Heat Transfer in Thin Slab Casting with CON1D Begoa Santillana  

E-print Network

in continuous casting is important to mould life, surface quality, breakouts and many aspects of the process-slab casting, numerical modelling, funnel mould, continuous casting of steel INTRODUCTION Mould heat transfer MODEL DESCRIPTION The heat transfer model, CON1D1 , models several aspects of the continuous casting

Thomas, Brian G.

198

owi'3:%l OORNL/CON-75 Effect of Forced Ventilation on  

E-print Network

in furnaces, water heaters, and fireplaces. * W. P. Levins, Energy and the Laundry Process, ORNL/CON-14 (April. Calculations were made for 17 cities across the United States showing the effect of dryer location on house energy consumption. SUMMARY An experiment was conducted at the Tennessee Energy Conservation in Housing

Oak Ridge National Laboratory

199

Introduccion a la demostracion asistida por ordenador (con Isabelle/Isar)  

E-print Network

Introducci´on a la demostraci´on asistida por ordenador (con Isabelle/Isar) Jos´e A. Alonso Jim recursi´on primitiva . . . . . . . . . . . . . . . . . . . . . . 14 2 El lenguaje de demostraci´on Isar 15 2.1 Panorama de la sintaxis (simplificada) de Isar . . . . . . . . . . . . . . . . . 15 2

Alonso, José A.

200

Iron formations are typically thinly bed-ded or laminated sedimentary rocks con-  

E-print Network

222 ABSTRACT Iron formations are typically thinly bed- ded or laminated sedimentary rocks con- taining 15% or more of iron and a large pro- portion of silica (commonly >40%). In the ca. 2590­2460 Ma Campbellrand-Kuruman Complex, Transvaal Supergroup, South Africa, iron formation occurs as a sediment- starved

Fischer, Woodward

201

EFFETTO DEL RICICLO MECCANICO SULLA RESISTENZA A FATICA DI UNA POLIAMMIDE RINFORZATA CON FIBRE DI VETRO  

Microsoft Academic Search

Sommario Il riciclo meccanico dei materiali compositi a matrice termoplastica rinforzati con fibre corte di vetro permette di recuperare sia materiale dismesso a fine vita sia gli scarti industriali di lavorazione. Esso consiste nella macinazione e successivo impiego del materiale macinato nel processo di stampaggio a iniezione. In questa memoria viene presentato lo studio del comportamento a fatica di una

A. Bernasconi; P. Davoli; D. Rossin

202

Heat-Transfer and Solidification Model of Continuous Slab Casting: CON1D  

E-print Network

Heat-Transfer and Solidification Model of Continuous Slab Casting: CON1D YA MENG and BRIAN G. THOMAS A simple, but comprehensive model of heat transfer and solidification of the continuous casting of steel slabs is described, including phenomena in the mold and spray regions. The model includes a one

Thomas, Brian G.

203

Copyright 2008 Psychonomic Society, Inc. 116 Categorization performances by pigeons can be con-  

E-print Network

Copyright 2008 Psychonomic Society, Inc. 116 Categorization performances by pigeons can be con rela- tions among stimuli become problematic (Herrnstein, Loveland, & Cable, 1976). Pigeons learn to describe experimental results from both hu- mans and pigeons (Herrnstein et al., 1976; Rosch, 1978

Herbranson, Wally

204

INVESTIGATION OF THE PHYSICAL CONDITIONS CON-TROLLING SPAWNING OF OYSTERS AND THE OCCUR-  

E-print Network

INVESTIGATION OF THE PHYSICAL CONDITIONS CON- TROLLING SPAWNING OF OYSTERS AND THE OCCUR- RENCE, DISTRIBUTION, AND SETTING OF OYSTER LARV.IE IN MILFORD HARBOR, CONNECTICUT ~ By HERBERT F. PRYTHERCH Assistant of the oyster_ 432 Time of spawning _ 433 Occurrence and distribution of larvre_ 435 Setting _ 450 Predicting

205

While the current trend towards lightweight con-structions may be of both economical and envi-  

E-print Network

- gate the transmission of diffuse incident sound waves through typical simple lightweight con of the level of sound and vibration is an important is- sue that must be dealt with by optimizing the designs below 2 kHz and the load acts as an approximated diffuse field on one side of the panel. Subject

Hansen, René Rydhof

206

Red GPS a Tiempo Real con Precisiones Centrimtricas para Utilizar en los Sistemas de  

E-print Network

Red GPS a Tiempo Real con Precisiones Centrim�tricas para Utilizar en los Sistemas de Informaci�n Desarrollo Tecnol�gico Instrumentaci�n � Distanci�metros � Total Stations + C�mara +GPS � Laser Scanners � GPS � GPS Reference Stations � GPS Internet Ready � PDA � Tecnolog�a Bluetooth Mapa de Puerto Rico

Gilbes, Fernando

207

Although most Minnesota airports do not have much concrete pavement, the con-  

E-print Network

Although most Minnesota airports do not have much concrete pavement, the con- crete they do have are generally constructed out of concrete that is much thicker. Maintaining any section of pavement, regardless of its size, is important for pre- serving its condition and optimizing pave- ment life. Pavement

Minnesota, University of

208

Un director chileno en el Berliner Ensemble (Entrevista con Alejandro Quintana Contreras)  

E-print Network

hora." INTEGRACIÓN CHILENO-ALEMANA. Después montaron el programa músico- teatral Con el alma llena de banderas, sobre la vida y momentos en que Víctor Jara compone y escribe sus canciones. Fue una experiencia interesante pues fue el primer intento de...

Bravo-Elizondo, Pedro

1987-04-01

209

Sexual con ict and cooperation in butter y reproduction: a comparative study of polyandry  

E-print Network

Sexual con ict and cooperation in butter y reproduction: a comparative study of polyandry University, S-10691 Stockholm, Sweden Most butter£y species can be characterized as capital breeders, meaning for the evolution of nuptial gifts in butter£ies are discussed, one arguing that variation in larval food

Leimar, Olof

210

Project Plan Field Assessment of the Effectiveness of DiazaConTM on Reducing Gray  

E-print Network

). This project proposes to field test DiazaConTM in reducing EGS reproduction and damage on the entire campus Reproduction and Population January 2011 ­ May 2014 Dr. Greg Yarrow, Professor of Wildlife Ecology Kristina reproduction in a small group (317) of EGS on the campus of Clemson University demonstrated

Bolding, M. Chad

211

recruited from other Pediatric Oncology Group (POG) institutions before treatment began. Informed con-  

E-print Network

con- sent was obtained, and procedures approved by the Committee on Human Research at the University cell fraction was obtained for the T cell cloning assay within 12 to 24 hours of its collection. The T cell cloning assay and analysis have been described [see B. A. Finette et al., Mutat. Res. 308, 223

Eddy, Sean

212

Elizabeth A.Johnson y Kefyn M.Catley con ilustraciones de Patricia J. Wynne  

E-print Network

a Nivel de la Hojarasca...............................5 Algunos de los Animales de la Hojarasca que ............................................7 Osos de Agua .......................................................9 Animales con Patas A R A S C A 1 Introducción Cuando pensamos en animales urbanos, es posible que nos vengan a la mente

213

expected thermal conductivity, assuming a con-stant G 260 MW m 2  

E-print Network

required of ther- mal barrier coatings. Applications of nanolami- nates as thermal barriers at temperaturesexpected thermal conductivity, assuming a con- stant G 260 MW m 2 K 1 and fixed values for the thermal conductivities of the individual alumina and W layers. For the ALD nanolami- nate with 1/ 0.35 nm

Torquato, Salvatore

214

Integrated Concentration in Science, 2012 High Fructose Corn Syrup a mini iCons case study  

E-print Network

� Integrated Concentration in Science, 2012 High Fructose Corn Syrup� a mini iCons case study researchers find that high fructose corn syrup prompts considerably more weight gain. http://www.princeton.edu/main/news/archive/S26/91/22K07/ The Atlantic, Aug 13, 2012 � Study: High fructose corn syrup no worse than `real' sugar

Auerbach, Scott M.

215

Are You Ready to Go Digital?: The Pros and Cons of Electronic Portfolio Development  

ERIC Educational Resources Information Center

There is an increasing need for educators to have professional portfolios, which are considered to be authentic tools for evaluating the knowledge, skill, beliefs and attitudes of prospective educators. Electronic portfolios are gaining in popularity and their relative pros and cons are examined.

Heath, Marilyn

2005-01-01

216

One-dimensional simulation of co-current, dairy spray drying systems pros and cons  

E-print Network

Review One-dimensional simulation of co-current, dairy spray drying systems ­ pros and cons Kamlesh PATEL 1 , Xiao Dong CHEN 1*, Romain JEANTET 2,3 , Pierre SCHUCK 2,3 1 Biotechnology and Food Engineering parameters and product properties before conducting real spray drying trials. The main advantage of a 1-D

Boyer, Edmond

217

DESign AnD conStruction College of Engineering and Mines  

E-print Network

in the construction industry. The program was designed in collaboration with construction industry em- ployers and continues to engage industry as a partner in the program. Engineers and other construction professionalsDESign AnD conStruction MAnAgEMEnt College of Engineering and Mines Department of Civil

Hartman, Chris

218

Enhanced ballistic performance of conned multi-layered ceramic targets against long rod penetrators through  

E-print Network

Enhanced ballistic performance of con®ned multi-layered ceramic targets against long rod Science Ltd. All rights reserved. Keywords: Ballistic penetration; Damage; Fragmentation; Interferometry is one of the most important material properties that in¯uence its ballistic performance and motivated

Espinosa, Horacio D.

219

Adsornftl 8~f^Ll* ORNL/CON-155 O173IS1o COp  

E-print Network

of Stirling Engine Thermodynamics N. C. J. Chen F. P. Griffin C. D. West OPERATED BY TAHP *MARTIN MARIETTA Government or any agency thereof. #12;ORNL/CON-155 LINEAR HARMONIC ANALYSIS OF STIRLING ENGINE THERMODYNAMICS ................... 8 2.3 Integrated Energy Equations ......................... 11 2.4 Engine Performance Parameters

Oak Ridge National Laboratory

220

ConSOM: A conceptional self-organizing map model for text clustering  

Microsoft Academic Search

In the novel conceptional self-organizing map model (ConSOM) proposed for text clustering in this paper, neurons and documents can be represented by two vectors: one in extended concept space, and the other in traditional feature space, and weight modification of neuron vector is guided by combination of similarities in both traditional and extended spaces. Experimental results show that by utilizing

Yuanchao Liu; Xiaolong Wang; Chong Wu

2008-01-01

221

22 Wisconsin Natural Resources These are all good ways to con-  

E-print Network

. This reduces water needs in those areas of the gardens and re- duces water "lost" to storm sewers. Creating22 Wisconsin Natural Resources These are all good ways to con- serve water but are only part of your water conservation opportu- nity. These practices focus on water demand as it relates to drawing

Saldin, Dilano

222

Diseño de Metaheurísticos para Problemas de Rutas con Flota Heterogénea: Concentración Heurística  

Microsoft Academic Search

En este trabajo se propone un algoritmo Metaheurístico para el problema de rutas con ventanas de tiempo, carga y descarga simultánea y flota heterogénea, basado en un proceso de tipo Concentración Heurística, un tipo de Metaheurístico dado a conocer muy recientemente por Rosing (1997) y Rosing y ReVelle (1997), compuesto en dos fases: en la primera se obtienen un conjunto

J. A. PACHECO; C. R. DELGADO SERNA

2000-01-01

223

which settles the debate about the exclusiveness of memory con-solidation during sleep.  

E-print Network

an effect of REM sleep deprivation on the improvement in the visual discrimination task but not for slow wave sleep deprivation, whereas Stickgold et al. (2000b) reported correlations for slow wave sleepwhich settles the debate about the exclusiveness of memory con- solidation during sleep

224

DIGITAL.CSIC: "Catalogacin con Dublin Core, gestin de derechos de  

E-print Network

DIGITAL.CSIC: "Catalogación con Dublin Core, gestión de derechos de autor y permisos de editores;Copyright y el acceso abierto #12;¿De qué estamos hablando? · Derechos de autor: conjunto de normas y principios que regulan los derechos morales y patrimoniales que la ley concede a los autores por el solo

225

TITLE: Shifting Agrarian Landscapes: Climate Change and Adaptation in Bangladesh HOSTS: Jason Cons and Shelley Feldman  

E-print Network

TITLE: Shifting Agrarian Landscapes: Climate Change and Adaptation in Bangladesh HOSTS: Jason Cons fragile lowland areas of the Ganges Delta, in which the vast majority of Bangladesh is situated. For rural and water resources are rapidly reorganizing village-life and changing Bangladesh's agrarian landscapes. Far

Angenent, Lars T.

226

Safety and Toxicity Evaluation of GonaCon ™ Immunocontraceptive Vaccine in White-Tailed Deer  

Microsoft Academic Search

GonaCon ™ Immunocontraceptive Vaccine targets the reproductive hormone gonadotropin releasing hormone (GnRH) secreted by the hypothalamus of the brain. Antibodies produced in response to the vaccine inactivate endogenous GnRH, which in turn eliminates stimulation of the pituitary gland and gonads in males or females. The resulting \\

Gary Killian; Donald Wagner; Richard Engeman; Lowell Miller

227

HumanWildlife Conflicts 3(1):7287, Spring 2009 Historical review of elkagriculture con-  

E-print Network

population. Conflicts between farmers and government about elk management often have been characterized the impacts of elk. Future programs to address these conflicts should focus on collaboration and communicationHuman­Wildlife Conflicts 3(1):72­87, Spring 2009 Historical review of elk­agriculture con- flicts

228

TERMODINÁMICA DE AGUJEROS NEGROS Y SISTEMAS FÍSICOS CON CAPACIDAD CALORÍFICA NEGATIVA  

Microsoft Academic Search

In this paper we are discussing Thermodynamics properties associated to black holes based on thermodynamics characteristics owns of a physics system with Negative Thermal Capacity, and we show a model that relates temperature and mass in a Schwarzschilds black hole INTRODUCCIÓN Los Agujeros Negros son objetos cosmológicos singulares, con una fuerte interacción gravitacional. Nada, incluyendo la luz, puede escapar de

Agujero Negro

229

Un estudio financiado por los Institutos Nacionales de la Salud (NIH) muestra reducción en la mortalidad entre hombres con cáncer de próstata en grado intermedio:  

Cancer.gov

Terapia hormonal por corto tiempo administrada en combinación con radioterapia a hombres con cáncer de próstata en estadio inicial aumentó sus posibilidades de vivir más en comparación con tratamiento de radioterapia sola, según un estudio clínico patrocinado por el NCI. Los beneficios del tratamiento combinado se limitaron principalmente a pacientes con enfermedad de riesgo intermedio y no se observaron en hombres con cáncer de próstata de riesgo bajo, indican los investigadores.

230

Añadir quimioterapia después de la radioterapia mejora la supervivencia de adultos con un tipo de tumor cerebral de crecimiento lento  

Cancer.gov

Adultos con gliomas de grado bajo, una forma de tumor cerebral, que recibieron tratamiento con quimioterapia después de la radioterapia vivieron más tiempo que pacientes que recibieron solo radioterapia, según los resultados de seguimiento a largo plazo de un estudio clínico aleatorizado y controlado, subvencionado por los NIH.

231

0^T^^^tf^*nl~~~~ ORNL/CON-154 Nonlinear Analysis of Stirling  

E-print Network

0^T^^^tf^*nl~~~~ ORNL/CON-154 OAK RIDGE NATIONAL LABORATORY Nonlinear Analysis of Stirling . 3- Z. #12;ORNL/CON-154 Engineering Technology Division NONLINEAR ANALYSIS OF STIRLING ENGINE THERMODYNAMICS encouragement. #12;NONLINEAR ANALYSIS OF STIRLING ENGINE THERMODYNAMICS R. D. Banduric N. C. J. Chen ABSTRACT

Oak Ridge National Laboratory

232

Summary Rising atmospheric carbon dioxide (CO2) con-centration ([CO2]) could alter terrestrial carbon (C) cycling by  

E-print Network

Summary Rising atmospheric carbon dioxide (CO2) con- centration ([CO2]) could alter terrestrial increase in tropospheric ozone (O3) con- centration ([O3]) will interact with rising atmospheric [CO2 of CBSCs were rarely signifi- cantly affected by the CO2 and O3 treatments in decomposing fine roots. Rates

233

14th World Congress of IFACA FINITE-DIMENSIONAL CODER-ESTIMATOR FOR RATE-CONS... Copyright 1999 IFAC  

E-print Network

14th World Congress of IFACA FINITE-DIMENSIONAL CODER-ESTIMATOR FOR RATE-CONS... Copyright © 1999 VIC 3052 Australia email: gnair@ee.mu.oz.au, robevans@ee.mu.oz.au EXTENDED ABSTRACT This paper;14th World Congress of IFACA FINITE-DIMENSIONAL CODER-ESTIMATOR FOR RATE-CONS... ISBN: 0 08 043248 4

Nair, Girish

234

ConBr, a lectin from Canavalia brasiliensis seeds, protects against quinolinic acid-induced seizures in mice.  

PubMed

Lectins are proteins capable of reversible binding to carbohydrates or glycoconjugates. In the central nervous system of mammals, lectins with affinity for mannose/glucose or galactose can modulate cellular communication. ConBr, a lectin isolated from the seeds of Canavalia brasiliensis, previously showed antidepressant effect in the forced swimming test in mice, with involvement of the monoaminergic system. In this study, we investigated the neuroprotective effects of ConBr against quinolinic acid (QA), a well-known NMDA agonist that produces severe neurotoxicity when administered in vivo. ConBr (10 ?g/site) administered via intracerebroventricular (i.c.v.) showed a neuroprotective activity against seizures induced by QA (36.8 nmol/site; i.c.v.) when administered 15 min prior to QA, with a percentage of protection around 50%. ConBr was also able to significantly decrease the severity of the seizures but without changes in the latency of the first convulsion or the duration of the seizures. This effect was dependent on the structural integrity of the ConBr protein and its binding capacity to oligosaccharides residues. ConA, a lectin with high similarity to ConBr, did not reverse the QA-induced seizures. Moreover, ConBr was able to protect against hippocampal cell death caused by QA, which was measured by propidium iodide incorporation. QA caused activation of JNK2 and improved the phosphorylation of Ser831 and 845 on the AMPA receptor GluR1 subunit, and both of these effects were counteracted by ConBr. Our data suggest that the lectin ConBr may exert a modulatory action on NMDA receptors, which inhibits its activity in response to QA. PMID:21948344

Russi, Michael A; Vandresen-Filho, Samuel; Rieger, Débora K; Costa, Ana Paula; Lopes, Mark W; Cunha, Rodrigo M S; Teixeira, Edson H; Nascimento, Kyria S; Cavada, Benildo S; Tasca, Carla I; Leal, Rodrigo B

2012-02-01

235

Air Traffic Management Technology Demonstration-1 Concept of Operations (ATD-1 ConOps)  

NASA Technical Reports Server (NTRS)

The operational goal of the ATD-1 ConOps is to enable aircraft, using their onboard FMS capabilities, to fly Optimized Profile Descents (OPDs) from cruise to the runway threshold at a high-density airport, at a high throughput rate, using primarily speed control to maintain in-trail separation and the arrival schedule. The three technologies in the ATD-1 ConOps achieve this by calculating a precise arrival schedule, using controller decision support tools to provide terminal controllers with speeds for aircraft to fly to meet times at a particular meter points, and onboard software providing flight crews with speeds for the aircraft to fly to achieve a particular spacing behind preceding aircraft.

Baxley, Brian T.; Johnson, William C.; Swenson, Harry; Robinson, John E.; Prevot, Thomas; Callantine, Todd; Scardina, John; Greene, Michael

2012-01-01

236

Numerical method for accelerated calculation of cyclic steady state of ModiCon-SMB-processes  

Microsoft Academic Search

The classical SMB-process including its ModiCon-variant is considered. The mathematical model corresponds to a set of coupled nonlinear partial differential equations completed by initial and boundary conditions. In order to predict the quality of the separation process accurately and efficiently discretization schemes are needed. We propose a new cascadic multilevel method for the fast calculation of the cyclic steady state

R. Lübke; Andreas Seidel-morgenstern; L. Tobiska

2007-01-01

237

NASA KSC/AFRL Reusable Booster System (RBS) Concept of Operations (ConOps)  

NASA Technical Reports Server (NTRS)

This slide presentation reviews the study and findings of the study on the Concept of Operations (ConOps) for Reusable Booster System (RBS) centering on rapid turnaround and launch of a two-stage partially reusable payload delivery system (i.e., 8 hours between launches). The study was to develop rapid ground processing (aircraft like concepts) and identify areas for follow-on study, technology needs, and proof-of-concept demonstrations.

Zeno, Dnany; Mosteller, Ted; McCleskey, Carey; Jhnson, Robert; Hopkins, Jason; Miller, Thomas

2010-01-01

238

Anticipated Stigma and Stigma Management Among Those to be Labeled “Ex-con”  

Microsoft Academic Search

Male prisoners (n = 450) estimated public reaction to the label “ex-con” and endorsed likely stigma management strategies. Although most anticipate significant rejection, they prefer preventative telling to withdrawal and secrecy as adjustments. OLS regression finds factors promoting exclusion (devaluation\\/discrimination beliefs and reduced job opportunities) related to withdrawal and secrecy, whereas factors favoring inclusion (“wise” family and friends and plans to attend

Terri A. Winnick; Mark Bodkin

2008-01-01

239

Matemtica para ubicarse En cualquier lugar del planeta y ms all con el GPS  

E-print Network

Matemática para ubicarse En cualquier lugar del planeta y más allá con el GPS matbaires 09 Pablo Groisman Dpto. de Matemática FCEN-UBA CONICET #12; ¿Qué es GPS? #12; Aplicaciones #12 corrección de errores para los GPS. Reloj atómico que marca la hora oficial de EEUU. (In) presición: 1

Groisman, Pablo

240

Foglio di esercizi N. 3 1. Con il linguaggio degli "o-piccolo": per x 0  

E-print Network

Foglio di esercizi N. 3 1. Con il linguaggio degli "o-piccolo": per x 0 2x = 1 + x log 2 + o(x), 3x = 1 + x log 3 + o(x), quindi 2x - 3x = (log 2 - log 3)x + o(x). Dato che -1 sin 1 x 1, si ha -x x sin 1 x x, e quindi (per il teorema dei due carabinieri) lim x0+ x sin 1 x = 0, ovvero x sin 1 x

Tauraso, Roberto

241

Range Con: a management evaluation system for assessing sucess of selected range improvement practices  

E-print Network

and content by: . N. Stu Cha of Committee) J. R. Conner (Member) . T. Hamilton (Member) J. L. Schuster (Head of Department) August 1989 ABSTRACT Range Con: A Management Evaluation System for Assessing Success of Selected Range Improvement Practices.... (August 19B9) Steven Linn Ekblad, B. S. Texas A&M University Chair of Advisory Committee: Dr. J. W. Stuth Decision support systems are currently being used in range management to assist ranch managers and agricultural agency personnel in making...

Ekblad, Steven Linn

2012-06-07

242

Verisimilitude (or “truthlikeness”) as an alternative to pro and cons: migraine and cluster headache mechanisms  

Microsoft Academic Search

Calculating verisimilitude (or “truthlikeness”) ad modum Popper is a quantitative alternative to the usual pros and cons in\\u000a migraine and cluster headache mechanisms. The following items were evaluated: dilation of large cranial arteries during migraine;\\u000a CGRP increase during migraine; migraine as a brain disorder; aura and migraine headache; brain stem activation during migraine;\\u000a rCBF in migraine without aura; NO and

Peer Carsten Tfelt-Hansen

2010-01-01

243

Tratamiento pasivo de aguas cidas de mina con caliza y MgO  

E-print Network

Tratamiento pasivo de aguas ácidas de mina con caliza y MgO: Resultados de los ensayos de campo en de lodos piríticos 200m Pozo de desagüe #12;Lugar de estudio (III): Calidad del agua de mina · pH: 2 debajo de la balsa de lodos Toma de agua Decantador de salida del bidón B Decantador de salida del bidón

Politècnica de Catalunya, Universitat

244

Structure, stratigraphy and petroleum geology of the south east Nam Con Son Basin, offshore Vietnam  

SciTech Connect

Recent exploration of the south east Nam Con Son Basin, offshore Vietnam, by BP in alliance with Statoil has involved acquisition of new seismic and well data. These new data have allowed re-evaluation of the tectono-stratigraphic development and petroleum geology, and have provided additional constraints on the regional tectonic evolution. The offshore Vietnamese basins have evolved in response to the complex relative motions of Indochina, Peninsular Malaysia, Borneo and the South China Sea during the Cenozoic. On the regional scale these motions have been accommodated by strike-slip fault development, rifting and contraction. In the Nam Con Son Basin these motions have interacted in different ways from the Palaeogene to recent. Two rifting episodes are recognized; a Palaeogene phase dominated by E-W trending extensional faults, and a Miocene phase dominated by N-S to NE-SW trending faults. The structural evolution is complicated by a pulse of mild contraction during the Middle Miocene. The sedimentary fill of the basin evolves from continental fluvio-lacustrine in the Palaeogene through to fully marine following the second phase of rifting in the Miocene. This pulsed structural and stratigraphic evolution has resulted in basinwide deposition of source, reservoir and seal facies, and produced a variety of potential trapping styles. This paper describes the hydrocarbon habitat of the south east Nam Con Son Basin within the context of the regional tectono-stratigraphic model.

Fraser, A.J.; Matthews, S.J.; Lowe, S.; Todd, S.P.; Simon, P. Peel, F.J. (BP Exploration Operating Co., Ltd., Uxbridge (United Kingdom))

1996-01-01

245

Structure, stratigraphy and petroleum geology of the south east Nam Con Son Basin, offshore Vietnam  

SciTech Connect

Recent exploration of the south east Nam Con Son Basin, offshore Vietnam, by BP in alliance with Statoil has involved acquisition of new seismic and well data. These new data have allowed re-evaluation of the tectono-stratigraphic development and petroleum geology, and have provided additional constraints on the regional tectonic evolution. The offshore Vietnamese basins have evolved in response to the complex relative motions of Indochina, Peninsular Malaysia, Borneo and the South China Sea during the Cenozoic. On the regional scale these motions have been accommodated by strike-slip fault development, rifting and contraction. In the Nam Con Son Basin these motions have interacted in different ways from the Palaeogene to recent. Two rifting episodes are recognized; a Palaeogene phase dominated by E-W trending extensional faults, and a Miocene phase dominated by N-S to NE-SW trending faults. The structural evolution is complicated by a pulse of mild contraction during the Middle Miocene. The sedimentary fill of the basin evolves from continental fluvio-lacustrine in the Palaeogene through to fully marine following the second phase of rifting in the Miocene. This pulsed structural and stratigraphic evolution has resulted in basinwide deposition of source, reservoir and seal facies, and produced a variety of potential trapping styles. This paper describes the hydrocarbon habitat of the south east Nam Con Son Basin within the context of the regional tectono-stratigraphic model.

Fraser, A.J.; Matthews, S.J.; Lowe, S.; Todd, S.P.; Simon, P. Peel, F.J. [BP Exploration Operating Co., Ltd., Uxbridge (United Kingdom)

1996-12-31

246

Choice of Ada programming language for the Conflict Model (ConMod)  

SciTech Connect

The Ada programming language was chosen for the Conflict Model (ConMod). ConMod is under development in the Conflict Simulation Center as a high-resolution, large-scale, automated, echelon-above-corps conflict simulation. The project has joint LLNL and Army sponsorship and Air Force participation. To make the language decision, the Kepner-Tregoe decision analysis method was employed. Sets of mandatory (MUST) objectives and desirable (WANT) objectives were established by the project team. Language features that support modern software engineering practices were a primary concern, along with benefits to the eventual ConMod user and aids in program implementation. The initial target machine for the model is the VAX 8800 running the VMS operating system. Six languages were considered. In the order in which they ranked against the WANTS, they were: DEC Ada, DEC Pascal, Logitech Modula-2, DEC FORTRAN, DEC C, and CACI Simscript II.5. Potential adverse consequences of the selection were also considered for the first three. No inhibitory problems were found for the first choice, DEC Ada, and consequently it was adopted. 13 refs.

Tannahill, J.R.; Simonson, S.C.

1987-10-23

247

ConTrack: Finding the most likely pathways between brain regions using diffusion tractography  

PubMed Central

Magnetic resonance diffusion-weighted imaging coupled with fiber tractography (DFT) is the only non-invasive method for measuring white matter pathways in the living human brain. DFT is often used to discover new pathways. But there are also many applications, particularly in visual neuroscience, in which we are confident that two brain regions are connected, and we wish to find the most likely pathway forming the connection. In several cases, current DFT algorithms fail to find these candidate pathways. To overcome this limitation, we have developed a probabilistic DFT algorithm (ConTrack) that identifies the most likely pathways between two regions. We introduce the algorithm in three parts: a sampler to generate a large set of potential pathways, a scoring algorithm that measures the likelihood of a pathway, and an inferential step to identify the most likely pathways connecting two regions. In a series of experiments using human data, we show that ConTrack estimates known pathways at positions that are consistent with those found using a high quality deterministic algorithm. Further we show that separating sampling and scoring enables ConTrack to identify valid pathways, known to exist, that are missed by other deterministic and probabilistic DFT algorithms. PMID:18831651

Sherbondy, Anthony J.; Dougherty, Robert F.; Ben-Shachar, Michal; Napel, Sandy; Wandell, Brian A.

2009-01-01

248

Steelmaking Slags  

NASA Astrophysics Data System (ADS)

The phosphate-enrichment behavior has experimentally been investigated in CaO-SiO2-FeO-Fe2O3-P2O5 steelmaking slags. The reaction ability of structural units in the slags has been represented the mass action concentration from the developed ion and molecule coexistence theory (IMCT)- model based on the IMCT. The defined enrichment possibility and enrichment degree of solid solutions containing P2O5 from the developed IMCT- model have been verified from the experimental results. The effects of binary basicity, the mass percentage ratio , and mass percentage of P2O5 in the initial slags on phosphate-enrichment behavior in the slags has also been discussed. The results show that the P2O5 component can easily be bonded by CaO to form tricalcium phosphate 3 CaO·P2O5, and the formed 3CaO·P2O5 can react with the produced dicalcium silicate 2CaO·SiO2 to generate solid-solution 2CaO·SiO2-3CaO·P2O5 under fixed cooling conditions. The maximum value of the defined enrichment degree of solid-solution 2CaO·SiO2-3CaO·P2O5 is obtained as 0.844 under conditions of binary basicity as 2.5 and the mass percentage ratio as 0.955 at fixed cooling conditions.

Li, Jin-yan; Zhang, Mei; Guo, Min; Yang, Xue-Min

2014-10-01

249

The Credibility Revolution in Empirical Economics: How Better Research Design is Taking the Con out of Econometrics  

E-print Network

Just over a quarter century ago, Edward Leamer (1983) reflected on the state of empirical work in economics. He urged empirical researchers to “take the con out of econometrics” and memorably observed (p. 37): “Hardly ...

Angrist, Joshua

2010-01-01

250

32 Wesley C. Salmon -it has been appropriate to deny that such appeals to functions involve the con-  

E-print Network

32 Wesley C. Salmon -it has been appropriate to deny that such appeals to functions involve the con's (1962) defense of deductive explanation in her contribution to the third volume #12;34 Wesley C. Salmon

Fitelson, Branden

251

Los NIH anuncian el lanzamiento de 3 estudios integrados de medicina de precisión; ALCHEMIST es para pacientes con ciertos tipos de cáncer de pulmón en estadio inicial  

Cancer.gov

Los Estudios sobre la Secuenciación e Identificación de Marcadores para el Mejoramiento de la Terapia Adjuvante para el Cáncer de Pulmón, conocidos con el nombre de ALCHEMIST, identificarán a pacientes con cáncer de pulmón en estadio inicial cuyos tumores albergan ciertos cambios genéticos, y evaluarán si los tratamientos con medicamentos que actúan sobre esos cambios pueden mejorar la supervivencia.

252

The pros and cons of risk communication: A project manager`s guide  

SciTech Connect

Communicating risk is in itself a risky, yet essential, part of any successful hazardous waste project`s community relations strategy. Essential, because no project requiring public involvement can achieve success without effective communication of technical data and associated risks. Risky, because the stakes are high, the public and media are often contentious, and their science and engineering are difficult to relate to non-technical audiences. Given that communicating project risks cannot be avoided, or are avoided at one`s own peril, project managers lacking mastery of communication skills can build winning strategies by heeding the following ``pros`` and ``cons`` of risk communication.

Perry, S.D. [Blasland, Bouck and Lee, Inc., Syracuse, NY (United States)

1995-12-31

253

[Severe acute asthma: isoflurane administration via AnaConDa™, is it safe?].  

PubMed

Standard treatments against severe acute asthma can be insufficient and need salvation treatments, such as isoflurane delivery. These treatments have not been much assessed and could lead to unrecognized side-effects. We report the case of a young man who suffered from intracranial hypertension associated with severe hypercapnia during the delivery of isoflurane via the system AnaConDa™ or Anaesthetic Conserving Device™ (ACD) (Sedama Medical). The rising of PaCO(2) appears to be linked to an ACD-dependent increase in the dead space. PMID:21146349

Chaillan, M; Badin, J; Kerforne, T; Voultoury, J; Pinsard, M

2011-01-01

254

Esercizi quarta settimana1 Determinare lo sviluppo asintotico delle seguenti funzioni nella scala delle potenze per x 0 con  

E-print Network

delle potenze per x 0 con almeno tre termini consecutivi: ex - sin x - 1 sinh2 x (1 - cosh x) sin x 3 x + x4 cos sin x sin(1 - cos x) esin x cos x + sin x ex2 Determinare lo sviluppo asintotico delle seguenti funzioni nella scala delle potenze per x + con almeno tre termini consecutivi: 3 x + x4 sinh sin

Marconi, Umberto

255

Extenso estudio realizado en muchos centros demuestra que hay una precisión comparable de la colonoscopia virtual con la colonoscopia convencional  

Cancer.gov

Según los resultados del Estudio Nacional de Colografía de Tomografía Computarizada de la American College of Radiology Imaging Network, ACRIN, la colografía de tomografía computarizada, también conocida como colonoscopia virtual, es comparable a la colonoscopia convencional en su capacidad para detectar con precisión cáncer y pólipos precancerosos y podría servir como examen selectivo inicial de detección de cáncer colorrectal. La colonoscopia convencional usa un tubo largo, flexible, con cámara, para ver el revestimiento del colon.

256

Uso de Sustancias en Mujeres con Desventaja Social: Riesgo para el Contagio de VIH/SIDA  

PubMed Central

Antecedentes La caracterización epidemiológica en Chile apunta a feminización, pauperización y heterosexualización de la epidemia del VIH, lo que implica un mayor riesgo para las mujeres en desventaja social. Si a esto se suma la utilización de sustancias, la vulnerabilidad de este grupo frente al VIH/SIDA aumenta. Objetivo Describir el uso de sustancias en mujeres con desventaja social e identificar factores de riesgo de contagio de VIH, asociados a este consumo. Material y Método 52 mujeres fueron entrevistadas como parte del proyecto “Testeando una intervención en prevención de VIH/SIDA en mujeres chilenas” GRANT # RO1 TW 006977. Se describen variables sociodemográficas y de consumo de sustancias a través de estadísticas descriptivas y se analiza la relación entre variables a través de pruebas de correlación. Resultados Los resultados indican un perfil sociodemográfico que sitúa a las mujeres en situación de vulnerabilidad frente al contagio de VIH/SIDA, con alto índice de uso de sustancias que acentúa el riesgo. Conclusiones Los hallazgos apuntan a la necesidad de considerar intervenciones que se enfoquen en la prevención de VIH en mujeres, abordando los riesgos asociados al consumo de sustancias. PMID:21197380

Cianelli, R.; Ferrer, L; Bernales, M.; Miner, S.; Irarrazabal, L.; Molina, Y.

2009-01-01

257

Actitudes ?ticas de los estudiantes y egresados en carrera de medicina con metodolog?as activas  

PubMed Central

El presente estudio tiene por objeto desarrollar un diagnostico de la inserción integrada de la ética en la carrera de medicina brasileña con una metodología de aprendizaje basada en problemas y describir las percepciones de actitudes éticas de los estudiantes y egresados. El diseño metodológico es un estudio de caso, descriptivo y documental, con abordaje cualitativo y cuantitativo. La muestra de esta investigación ha sido constituida por 120 estudiantes y 40 egresados de dos promociones del Curso de Medicina de la ESCS. Este proyecto fue aprobado por el Comité de Ética en Investigación - SES/DF. Los estudiantes y egresados de la ESCS demostraron un buen manejo en el abordaje de los conflictos éticos y respeto a los pacientes. Sin embargo, el análisis de sensibilidad ética mostró una fragilidad en las percepciones y aptitudes inapropiadas de los estudiantes de la carrera de medicina, identificada básicamente en los años iniciales, que necesitan más discusiones sistematizadas sobre los aspectos éticos y bioéticos integrados a las actividades prácticas para estimular y fortalecer la reflexión ética de los estudiantes. PMID:20981242

Novaes, Maria Rita Carvalho Garbi; Novaes, Luiz Carlos Garcez; Guilhem, Dirce; Stepke, Fernando Lolas; Silveira, Carla Cristina Costa; Komatsu, Ricardo Shoiti; Trindade, Eliane Mendonca Vilar; Guiotti, Murilo Galvao

2010-01-01

258

ConDeTri - A Content Dependent Read Trimmer for Illumina Data  

PubMed Central

During the last few years, DNA and RNA sequencing have started to play an increasingly important role in biological and medical applications, especially due to the greater amount of sequencing data yielded from the new sequencing machines and the enormous decrease in sequencing costs. Particularly, Illumina/Solexa sequencing has had an increasing impact on gathering data from model and non-model organisms. However, accurate and easy to use tools for quality filtering have not yet been established. We present ConDeTri, a method for content dependent read trimming for next generation sequencing data using quality scores of each individual base. The main focus of the method is to remove sequencing errors from reads so that sequencing reads can be standardized. Another aspect of the method is to incorporate read trimming in next-generation sequencing data processing and analysis pipelines. It can process single-end and paired-end sequence data of arbitrary length and it is independent from sequencing coverage and user interaction. ConDeTri is able to trim and remove reads with low quality scores to save computational time and memory usage during de novo assemblies. Low coverage or large genome sequencing projects will especially gain from trimming reads. The method can easily be incorporated into preprocessing and analysis pipelines for Illumina data. Availability and implementation Freely available on the web at http://code.google.com/p/condetri. PMID:22039460

Smeds, Linnea; Kunstner, Axel

2011-01-01

259

Overcoming the aggregation problem: a new type of fluorescent ligand for ConA-based glucose sensing.  

PubMed

Competitive binding assays based on the lectin Concanavalin A (ConA) have displayed significant potential to serve in continuous glucose monitoring applications. However, to date, this type of fluorescent, affinity-based assay has yet to show the stable, glucose predictive capabilities that are required for such an application. This instability has been associated with the extensive crosslinking between traditionally-used fluorescent ligands (presenting multiple low-affinity moieties) and ConA (presenting multiple binding sites) in free solution. The work herein introduces the design and synthesis of a new type of fluorescent ligand that can avoid this aggregation and allow the assay to be sensitive across the physiologically relevant glucose concentration range. This fluorescent ligand (APTS-MT) presents a single high-affinity trimannose moiety that is recognized by ConA's full binding site and a fluorophore that can effectively track the ligand's equilibrium binding via fluorescent anisotropy. This is confirmed by comparing its measured fluorescent lifetime to experimentally-determined rotational correlation lifetimes of the free and bound populations. Using an assay comprised of 200 nM APTS-MT and 1 µM ConA, the fluorescence anisotropy capably tracks the concentration of monosaccharides that are known to bind to ConA's primary binding site, and the assay displays a MARD of 6.5% across physiologically relevant glucose concentrations. Ultimately, this rationally-designed fluorescent ligand can facilitate the realization of the full potential of ConA-based glucose sensing assays and provide the basis for a new set of competing ligands to be paired with ConA. PMID:25058939

Cummins, Brian M; Li, Mingchien; Locke, Andrea K; Birch, David J S; Vigh, Gyula; Coté, Gerard L

2015-01-15

260

Feeding of grey squirrels (Sciurus carolinensis) with the contraceptive agent DiazaCon™: effect on cholesterol, hematology, and blood chemistry.  

PubMed

Grey squirrels (Sciurus carolinensis) are an invasive species in Britain and Italy. They have replaced native red squirrels (Sciurus vulgaris) throughout most of Britain, and cause damage to trees. Currently, lethal control is used to manage grey squirrel populations in Britain, but nonlethal methods might be more acceptable to the public. One such method is contraception with 20,25-diazacholesterol dihydrochloride (DiazaCon™). DiazaCon™ inhibits the conversion of desmosterol to cholesterol, resulting in increasing desmosterol concentrations and decreasing cholesterol concentrations. Because cholesterol is needed for the synthesis of steroid reproductive hormones, such as progesterone and testosterone, inhibition of cholesterol synthesis indirectly inhibits reproduction. Desmosterol is used as a marker of efficacy in laboratory studies with species that do not reproduce readily in captivity. Grey squirrels were gavaged with a DiazaCon™ solution for 2 days, and then fed DiazaCon™-coated peanuts for an additional 8 days at target doses of 50 and 100 mg DiazaCon™ per kg body weight. There was a significant difference in cholesterol concentrations in the treatment groups compared to the control group. Cholesterol was reduced by ? 40% for 2 months in both treatment groups. There were no differences among groups with respect to blood chemistry and hematology parameters, and mean values are reported. The mean overall dose of DiazaCon™ received was 29.0 ± 1.6 and 55.3 ± 4.3 mg/kg in the low (50 mg/kg) and high dose (100 mg/kg) groups, respectively. DiazaCon™ might provide an effective, acceptable alternative to lethal control. PMID:22182332

Yoder, Christi A; Mayle, Brenda A; Furcolow, Carol A; Cowan, David P; Fagerstone, Kathleen A

2011-12-01

261

A con-focal setup for micro-XRF experiments using diamond anvil cells  

NASA Astrophysics Data System (ADS)

In this contribution we introduce an experimental setup to perform con-focal micro X-ray fluorescence measurements in situ in samples at high temperatures and pressures in diamond anvil cells (DAC) (e.g. Schmidt et al. 2007). The con-focal arrangement is used to suppress the background in X-ray fluorescence (XRF) spectra that stems from elastic and inelastic scattering of the diamond anvils. The setup is based on a focusing optic in the incident beam that reaches a spot of 5-10 ?m and a focusing poly-capillary in front of an energy-dispersive solid-state detector. The detector poly-capillary is designed to work at a very long working distance of 50 mm in order to collect the radiation from the center of the DAC at 90° to the incident beam. The probing volume is defined by the two foci and has a size of ca. 300 ?m at 8 keV and 150 ?m at 19 keV as measured by scans through thin metal foils. Comparison of XRF spectra acquired with a usual detector collimator and spectra recorded with the detector capillary shows a strong suppression of XRF signal generated outside the probed volume, i.e. XRF from the gasket material and signal from elastic and Compton scattering by the diamond anvils. The ratio of the Zr K-alpha fluorescence peak to the peak of the Compton scattering changes from 0.5 (collimator) to 1.26 (detector capillary) for a ca. 1000 ppm Zr standard solution and an incident beam energy of 20 keV. For a standard solution containing ca. 1000 ppm Hf, the ratio of the L-alpha to the Compton signal increases to 6 using the detector capillary and an incident beam energy of 9.7 keV. Thus, the con-focal setup substantially improves the fluorescence to background ratio. This will result in higher sensitivities for dilute elements in the sample chamber of the DAC. Furthermore, the possibilities of interference of the sample's signal with signal from the sample environment are greatly reduced. In a broader sense, the setup can also be applied to other confined samples that require long working distances. Schmidt et al. (2007) Lithos 95, 87-102

Wilke, Max; Rickers, Karen; Vincze, Laszlo; Schmidt, Christian; Borchert, Manuela; Pascarelli, Sakura

2010-05-01

262

Multi-wall carbon nanotube-polyaniline biosensor based on lectin-carbohydrate affinity for ultrasensitive detection of Con A.  

PubMed

In this paper, a novel method for detecting concanavalin A (Con A) was developed based on lectin-carbohydrate biospecific interactions. Multi-wall carbon nanotube-polyaniline (MWNT-PANI) nanocomposites, synthesized by in situ polymerization, were chosen to immobilize d-glucose through the Schiff-base reaction. The immobilized D-glucose showed high binding sensitivity and excellent selectivity to its target lectin, Con A. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), transmission electron microscopy (TEM) and atomic force microscopy (AFM) were applied to characterize the assembly process of the modified electrode. Due to the high affinity of Con A for D-glucose and high stability of the propounded sensing platform, the fabricated biosensor achieved ultrasensitive detection of Con A with good sensitivity, acceptable reproducibility and stability. The changes of response current were proportional to the Con A concentrations from 3.3 pM to 9.3 nM, with a detection limit of 1.0 pM. Therefore, the combination of MWNT-PANI nanocomposites and the special binding force between lectin and carbohydrate provides an efficient and promising platform for the fabrication of bioelectrochemical devices. PMID:22387041

Hu, Fangxin; Chen, Shihong; Wang, Chengyan; Yuan, Ruo; Xiang, Yun; Wang, Cun

2012-04-15

263

Distribución espacial de órbitas con diferentes grados de caoticidad en modelos autoconsistentes de satélites galácticos  

NASA Astrophysics Data System (ADS)

En trabajos anteriores (Carpintero et al., Cel. Mech. Dynam. Astron. 85, 247, 2003), mostramos que las órbitas caóticas son muy importantes en los satélites galácticos. Sin embargo, los únicos modelos autoconsistentes de los que se disponía para ellos eran los de Heggie-Ramamani, cuya función de distribución depende sólo de la energía por lo que no mostraban diferencias entre las distribuciones de sus órbitas regulares y caóticas. Ahora, mediante una aproximación cuadrupolar, hemos logrado construir modelos autoconsistentes de satélites galácticos con distribuciones de velocidades anisotrópicas (lo que indica que sus funciones de distribución no dependen sólo de la energía) y hemos logrado revelar las diferencias entre las estructuras espaciales de las órbitas de distinta caoticidad.

Muzzio, J. C.; Mosquera, M.

264

Análisis de componentes cognoscitivos y psiquiátricos en pacientes con demencia frontotemporal y alzheimer / Analysis of cognitive and psychiatric components in patients with frontotemporal dementia and Alzheimer.  

E-print Network

??Reyes Gavilán, Pablo Alexander (2010) Análisis de componentes cognoscitivos y psiquiátricos en pacientes con demencia frontotemporal y alzheimer / Analysis of cognitive and psychiatric components… (more)

Reyes Gavilán, Pablo Alexander

2010-01-01

265

Spectral analysis software improves con dence in plant and soil water stable isotope analyses performed by isotope ratio infrared  

E-print Network

Spectral analysis software improves con dence in plant and soil water stable isotope analyses with the types of spectral interference that compromises their stable isotope analysis. Here we report two of stable iso- tope analysis of water. The stable isotope composition of pure water analyzed by IRIS

Goldsmith, Greg

266

IEEE Wireless Communications February 201382 1536-1284/13/$25.00 2013 IEEE 1 The static power con-  

E-print Network

to green cellular networks. Taking advantage of multicell cooperation, the energy efficiency of cellular (e.g., the grid, solar energy, and wind energy), Han and Ansari [5] proposed to optimize, the energy con- sumption of cellular networks keeps increasing. Therefore, greening cellular networks

Ansari, Nirwan

267

have to travel normal to the layer structure. The film thickness must be sufficiently small to keep the con-  

E-print Network

the con- tact resistance low (Fig. 3B). 15. M. Shur, M. Hack, J. G. Shaw, J. Appl. Phys. 66, 3371 (1989); M. Shur and M. Hack, ibid. 55, 3831 (1984). 16. G. Horowitz and P. Delannoy, ibid. 70, 469 (1991

Wang, Zhong L.

268

C ALCULO Y DISE ~NO ASISTIDO POR ORDENADOR DE TOMAS DE TIERRA CON MODELOS DE SUELO NO UNIFORMES  

E-print Network

C ALCULO Y DISE ~NO ASISTIDO POR ORDENADOR DE TOMAS DE TIERRA CON MODELOS DE SUELO NO UNIFORMES suelo no uniformes. La formulacion se ha derivado especialmente para modelos de terreno de dos capas a disposiciones muy simples de los electrodos de tierra en modelos de suelo uniforme, elevados requerimientos

Colominas, Ignasi

269

Responsables de la UA visitan Bruselas con motivo del programa de investigacin Horizonte 2020 de la UE  

E-print Network

Responsables de la UA visitan Bruselas con motivo del programa de investigación Horizonte 2020 de pasados para preparar la estrategia de la UA de cara a la convocatoria Horizonte 2020. Durante la actividad ha estado acompañada por el director del Secretariado de Investigación de la UA, Enrique Herrero

Escolano, Francisco

270

Development and Demonstration of a Fault Current Limiting HTS Cable to be Installed in the Con Edison Grid  

Microsoft Academic Search

The US Department of Homeland Security is currently funding the design, development and demonstration of an inherently fault current limiting HTS cable, called Secure Super Grids, under the Hydra project with Con Edison. The cable is 300 m long and is being designed to carry 96 MVA at a distribution level voltage of 13.8 kV. The cable will be built

James Maguire; Doug Folts; Jie Yuan; David Lindsay; Dave Knoll; Shawn Bratt; Zack Wolff; Steve Kurtz

2009-01-01

271

respectively, dust and sea salt aerosols; cloud liquid water and cloud ice mixing ratio; and number con-  

E-print Network

respectively, dust and sea salt aerosols; cloud liquid water and cloud ice mixing ratio; and number con- centrations of cloud droplets and ice crystals. Trans- port, dry, and wet deposition, but instead will likely cause localized ex- tinctions at a series of "hot spots." Patterns of exposure

Blanchette, Carol Anne

272

iPathCons and iPathDB: an improved insect pathway construction tool and the database  

PubMed Central

Insects are one of the most successful animal groups on earth. Some insects, such as the silkworm and honeybee, are beneficial to humans, whereas others are notorious pests of crops. At present, the genomes of 38 insects have been sequenced and made publically available. In addition, the transcriptomes of dozens of insects have been sequenced. As gene data rapidly accumulate, constructing the pathway of molecular interactions becomes increasingly important for entomological research. Here, we developed an improved tool, iPathCons, for knowledge-based construction of pathways from the transcriptomes or the official gene sets of genomes. Considering the high evolution diversity in insects, iPathCons uses a voting system for Kyoto Encyclopedia of Genes and Genomes Orthology assignment. Both stand-alone software and a web server of iPathCons are provided. Using iPathCons, we constructed the pathways of molecular interactions of 52 insects, including 37 genome-sequenced and 15 transcriptome-sequenced ones. These pathways are available in the iPathDB, which provides searches, web server, data downloads, etc. This database will be highly useful for the insect research community. Database URL: http://ento.njau.edu.cn/ipath/ PMID:25388589

Zhang, Zan; Yin, Chuanlin; Liu, Ying; Jie, Wencai; Lei, Wenjie; Li, Fei

2014-01-01

273

Application Instructions The 2014 UTHSC College of Nursing (CON) Application cycle is closed except for the Neonatal Nurse, Adult-  

E-print Network

for the Neonatal Nurse, Adult- Gerontology Acute Care Nurse Practitioner certificate program and RN-BSN programsApplication Instructions The 2014 UTHSC College of Nursing (CON) Application cycle is closed except of the application cycle. Applications for the DNP Nurse Anesthesia (Entry) Program for Summer 2015 admission

Cui, Yan

274

First International Conference on Industrialized, Intelligent Construction (I3CON) Loughborough University, 14-16 May 2008  

E-print Network

First International Conference on Industrialized, Intelligent Construction (I3CON) Loughborough to be a criticism, of course: Pearce was only following the prevailing ideas of the day, and the end result. The interior atrium of the Eastgate Centre2 . d. A mound of Macrotermes michaelseni in northern Namibia. 2 How

Turner, Scott

275

Optical negative-index bulk metamaterials con-sisting of 2D perforated metal-dielectric stacks  

E-print Network

Optical negative-index bulk metamaterials con- sisting of 2D perforated metal-dielectric stacks for High Technology Materials and Department of Electrical and Computer Engineering, University of New-infrared negative-index metama- terial (NIM) slab consisting of multiple layers of perforated metal

New Mexico, University of

276

Studio di risonanza magnetica funzionale delle funzioni attentive in pazienti con danno assonale diffuso dopo trauma cranico  

Microsoft Academic Search

Introduzione Il trauma cranico rappresenta la principale causa di morte e inva- lidità nei soggetti giovani adulti. Si tratta di una condizione patologi- ca caratterizzata da complessi esiti neurologici che coinvolgono, non solo le capacità motorie, ma anche quelle comportamentali e cogni- tive1. I disturbi neuropsicologici rappresentano un grave e costante problema nel paziente post-traumatico, interferendo con i processi di

S. GALBIATI; A. BARDONI; M. RECLA; F. LOCATELLI; A. COSTA; E. CAPANNINI; A. PASTORI; V. BRANCA; S. STRAZZER

2008-01-01

277

EL DESARROLLO DE HABILIDADES EN LAS PERSO- NAS CON NECESIDADES EDUCATIVAS ESPECIALES A TRAVÉS DE LA EXPRESIÓN PLÁSTICA  

Microsoft Academic Search

SUMARIO: En todos los niveles de enseñanza las asignaturas relacionadas con la Educación Artística están perdiendo importancia frente a la relevancia de las materias instrumentales. Sin embargo resulta imprescindible la enseñanza en la creatividad y el pensamiento divergente; aspectos que de inmediato nos hacen pensar en la Expresión Plástica. Más allá las enseñanzas artísticas resultan una herramienta ideal para el

José Lobato Suero; Magdalena Martínez; Isabel Molinos Lara

278

iPathCons and iPathDB: an improved insect pathway construction tool and the database.  

PubMed

Insects are one of the most successful animal groups on earth. Some insects, such as the silkworm and honeybee, are beneficial to humans, whereas others are notorious pests of crops. At present, the genomes of 38 insects have been sequenced and made publically available. In addition, the transcriptomes of dozens of insects have been sequenced. As gene data rapidly accumulate, constructing the pathway of molecular interactions becomes increasingly important for entomological research. Here, we developed an improved tool, iPathCons, for knowledge-based construction of pathways from the transcriptomes or the official gene sets of genomes. Considering the high evolution diversity in insects, iPathCons uses a voting system for Kyoto Encyclopedia of Genes and Genomes Orthology assignment. Both stand-alone software and a web server of iPathCons are provided. Using iPathCons, we constructed the pathways of molecular interactions of 52 insects, including 37 genome-sequenced and 15 transcriptome-sequenced ones. These pathways are available in the iPathDB, which provides searches, web server, data downloads, etc. This database will be highly useful for the insect research community. Database URL: http://ento.njau.edu.cn/ipath/ PMID:25388589

Zhang, Zan; Yin, Chuanlin; Liu, Ying; Jie, Wencai; Lei, Wenjie; Li, Fei

2014-01-01

279

La UA colaborar con el Centro de Parlisis Cerebral Infanta Elena en nuevas tecnologas y Ciencias de Salud  

E-print Network

La UA colaborará con el Centro de Parálisis Cerebral Infanta Elena en nuevas tecnologías y Ciencias Parálisis Cerebral Infanta Elena en materia de nuevas tecnologías y Ciencias de la Salud. Este ha sido el

Escolano, Francisco

280

Aplicando modelos de granos de polvo con propiedades meteoriticas al continuo ionizante de algunos Nucleos Activos de Galaxias  

E-print Network

We construct extinction curves based on Mie's theory for spherical dust grain with size distributions between 50-2500 A and composed by elements found in meteorites. We explore the issue of whether the observed spectral energy distribution might be dust absorbed in the far and near-UV by this kind of dust grains. Using this approach, satisfactory fits to the 11 spectra can be obtained. ----- En este trabajo, presentamos las diversas curvas de extincion que hemos calculado con base a la teoria Mie para granos de polvo esfericos, con distribuciones de acuerdo a su tamano (entre 50-2500 A) y con diversos compuestos quimicos hallados en meteoritos. Bajo el posible paradigma que hemos desarrollado, estas curvas de extincion al ser aplicadas a un continuo ionizante teorico y comparadas con 11 espectros observados de quasares, hemos encontrado de manera exitosa reproducir tanto el quiebre UV asi como el problema de suavidad presentes en el continuo ionizante de algunos Nucleos Activos de Galaxias.

Haro-Corzo, Sinhue Amos Refugio

2008-01-01

281

Aplicando modelos de granos de polvo con propiedades meteoriticas al continuo ionizante de algunos Nucleos Activos de Galaxias  

E-print Network

We construct extinction curves based on Mie's theory for spherical dust grain with size distributions between 50-2500 A and composed by elements found in meteorites. We explore the issue of whether the observed spectral energy distribution might be dust absorbed in the far and near-UV by this kind of dust grains. Using this approach, satisfactory fits to the 11 spectra can be obtained. ----- En este trabajo, presentamos las diversas curvas de extincion que hemos calculado con base a la teoria Mie para granos de polvo esfericos, con distribuciones de acuerdo a su tamano (entre 50-2500 A) y con diversos compuestos quimicos hallados en meteoritos. Bajo el posible paradigma que hemos desarrollado, estas curvas de extincion al ser aplicadas a un continuo ionizante teorico y comparadas con 11 espectros observados de quasares, hemos encontrado de manera exitosa reproducir tanto el quiebre UV asi como el problema de suavidad presentes en el continuo ionizante de algunos Nucleos Activos de Galaxias.

Sinhue Amos Refugio Haro-Corzo; Luc Binette

2008-02-20

282

Global trade in dairy products involves complex and con-tentious issues. Viewed broadly from the perspective of  

E-print Network

Global trade in dairy products involves complex and con- tentious issues. Viewed broadly from the perspective of "society," there are large benefits from liberalizing trade. Viewed narrowly from the perspective of dairy producers, liberalized trade is desirable only if it expands exports and reduces imports

Radeloff, Volker C.

283

SITE PROGRAM APPLICATIONS ANALYSIS REPORT, INTERNATIONAL WASTE TECHNOLOGIES/GEO CON IN-SITU STABILIZATION/SOLIDIFICATION  

EPA Science Inventory

An evaluation was performed of the International Waste Technologies (IWT) HWT-20 additive and the Geo-Con, Inc. deep-soil-mixing equipment for an in situ stabilization/solidification process and its applicability as an on-site treatment method for waste site cleanup. emonstration...

284

TECHNOLOGY EVALUATION REPORT: INTERNATIONAL WASTE TECHNOLOGIES/GEO-CON IN SITU STABILIZATION/SOLIDIFICATION - VOLUME IV - UPDATE REPORT  

EPA Science Inventory

The long-term performance tests provide information on the first follow-up sampling and analysis on the SITE program demonstration of the International Waste Technologies additive, and the Geo-Con deep soil mixing equipment. he samples containing PCBs, were collected one year aft...

285

TECHNOLOGY EVALUATION REPORT: INTERNATIONAL WASTE TECHNOLOGIES/GEO-CON IN SITU STABILIZATION/SOLIDIFICATION - VOLUME III - UPDATE REPORT  

EPA Science Inventory

The long-term performance tests provide information on the first follow-up sampling and analysis on the SITE program demonstration of the International Waste Technologies additive, and the Geo-Con deep soil mixing equipment. he samples containing PCBs, were collected one year aft...

286

LISTADO DE LIBROS SOBRE VIOLENCIA DE GNERO Este listado se corresponde con los libros expuestos en esta Muestra. Han  

E-print Network

LISTADO DE LIBROS SOBRE VIOLENCIA DE G�NERO Este listado se corresponde con los libros expuestos en: libro de estilo para informar en los medios de comunicación sobre la mujer SÁNCHEZ ARANDA, José Javier

Escolano, Francisco

287

Pros and cons of liver transplantation in human immunodeficiency virus infected recipients  

PubMed Central

Before the introduction of combined highly active antiretroviral therapy, a positive human immunodeficiency virus (HIV) serological status represented an absolute contraindication for solid organ transplant (SOT). The advent of highly effective combined antiretroviral therapy in 1996 largely contributed to the increased demand for SOT in HIV-positive individuals due to increased patients’ life expectancy associated with the increasing prevalence of end-stage liver disease (ESLD). Nowadays, liver failure represents a frequent cause of mortality in the HIV-infected population mainly due to coinfection with hepatitis viruses sharing the same way of transmission. Thus, liver transplantation (LT) represents a reasonable approach in HIV patients with stable infection and ESLD. Available data presently supports with good evidence the practice of LT in the HIV-positive population. Thus, the issue is no longer “whether it is correct to transplant HIV-infected patients”, but “who are the patients who can be safely transplanted” and “when is the best time to perform LT”. Indeed, the benefits of LT in HIV-infected patients, especially in terms of mid- and long-term patient and graft survivals, are strictly related to the patients’ selection and to the correct timing for transplantation, especially when hepatitis C virus coinfection is present. Aim of this article is to review the pros and cons of LT in the cohort of HIV infected recipients. PMID:24833865

Baccarani, Umberto; Righi, Elda; Adani, Gian Luigi; Lorenzin, Dario; Pasqualucci, Alberto; Bassetti, Matteo; Risaliti, Andrea

2014-01-01

288

[Emission spectrum of liquid CO-N2 mixture at shock compression].  

PubMed

Driving a copper projectile to impact a cryo-target made of aluminous alloy at the speed of 2.21 km x s(-1) with a two stage light gas gun, a proper one dimensional shockwave with a speed of 18.76 km x s(-1) was generated and directly acted on a uniform liquid in target, which was condensed by proportional gaseous carbon monoxide and nitrogen. At the measurement of Hugoniots, the full linear spectrum entirely dissociated with the plasma under the shock pressure of 33.5 GPa was caught by the use of intensified charge coupled device and accurate spectrographic technology. From the analysis of the spectrum, the authors know that the transient spectrograph with six channels can be used to measure and record the course of shock compression-irradiancy reliably, and the emitted spectral lines of shock compressed products indicated that the thermal dissociation and phase transition had occurred in homogeneous liquid of CO-N2. Furthermore, comparing the spectral intensity of lower central wavelength with that of higher, the fact of stronger intensity of 488 nm also validates that changes from "optic thin" to "optic thick" exist indeed in dense hydrocarbon liquid acted on by shock pressure. PMID:19626860

Sun, Yue; Yi, Peng-Fei; Chen, Xian-Meng; Liu, Fu-Sheng; Zhang, Ming-Jian; Zheng, Xue-Ping; Xue, Xue-Dong

2009-04-01

289

Strains arising by seismic events in the SIRGAS-CON network region  

NASA Astrophysics Data System (ADS)

In this study, we investigate surface strains related to seismic events and their relationship with pre- and post-seismic events in Latin America, by analyzing the variation of estimated earth coordinates supplied by a geodetic network called SIRGAS-CON. Based on data provided by the USGS for the period 2000-2011, and after the Global Congruency test, we selected four events associated with unstable geodetic network points. The resulting strains were estimated based on the finite element method using networks of points considered unstable connected to neighboring points using the Delaunay triangulation. It was possible to determine the strains along with the resulting guidelines for pre- and post-seismic, considering each triangular lattice formed for analysis as a homogeneous solid body. The calculation of strains and verification of the results allowed to analyze the interactions between lithospheric plates from the contraction and extension directions between points located in different plates. Despite the association between seismic events and the strain of geodetic network, some events of magnitude greater than 5.8 Mw were excluded because it does not show (provide) the surface strain, which is located at great depths. It was confirmed that events of greater magnitude provide increased surface strain rate when compared with other similar depths.

Marotta, G. S.; França, G. S.; Monico, J. F. G.; Fuck, R. A.

2013-03-01

290

Pro/con ethics debate: is nonheart-beating organ donation ethically acceptable?  

PubMed

This pro/con debate explores the ethical issues surrounding nonheart-beating organ donation (NHBD), a source of considerable controversy. It is estimated that NHBD can increase the number of organs available for transplant by 25% at a time of great need. However, should NHBD be ethically acceptable? In support of NHBD, it may be acceptable practice if there is a separation of the rationale to withdraw life support/to withhold cardiopulmonary resuscitation from the decision to recover organs, if no conflicts of interest exist, if a waiting time precluding spontaneous return of circulation is included, and if NHBD conforms to a standardized protocol. Against NHBD, there are questions regarding the ambiguity and cultural perspectives of death, regarding whether a separation of rationale between withdrawal and donation is sufficient to preclude conflicts of interest, and regarding whether variable protocols arise that subordinate the patient to the goal of donation. Such concerns suggest NHBD may damage the trust in patient-physician relationships and may adversely affect organ donation rates. PMID:12133176

Whetstine, Leslie; Bowman, Kerry; Hawryluck, Laura

2002-06-01

291

Burnout en médicos y enfermeras y su relación con el constructo de personalidad resistente Burnout in doctors and nurses and their relationship with the construct of hardiness personality  

Microsoft Academic Search

RESUMEN El objetivo de este trabajo fue identificar la presencia, nivel y distribución de los factores que constituyen al síndrome de burnout y su relación con la personalidad resistente, con el fin de de- terminar si este constructo puede ser entendido como un factor de protección que disminuye la probabilidad de que el individuo desarrolle y experimente burnout, además de

María Erika; Ortega Herrera; Godeleva Rosa Ortiz Viveros; Pedro Guillermo Coronel Brizio

292

Estudio financiado por los NIH indica un aumento de la supervivencia en hombres con cáncer de próstata metastásico que reciben quimioterapia desde el inicio de la terapia hormonal  

Cancer.gov

Los hombres con cáncer de próstata metastásico sensible a las hormonas que recibieron el fármaco quimioterapéutico docetaxel al inicio de la terapia hormonal convencional vivieron más tiempo que los pacientes que recibieron solo terapia hormonal, de acuerdo con los resultados preliminares de un estudio clínico controlado y aleatorizado patrocinado por los Institutos Nacionales de la Salud (NIH).

293

RESPUESTA TEMPORAL A H2 DE CAPACITORES MOS CON COMPUERTA DE Mo TEMPORAL RESPONSE TO H2 IN Mo GATE MOS CAPACITORS  

Microsoft Academic Search

. La fotocorriente inducida por iluminación pulsada, de un capacitor MOS con compuerta de Mo, provisto de ventana óptica, se emplea como monitor de su estado de carga, frente a estímulos químicos con concentraciones crecientes de H2 en N2 de hasta 1000 ppm. Se describen las respuestas inducidas por transporte a la interfaz metal-dieléctrico. Los resultados confirman que la sensibilidad

R. M. Lombardi; R. Aragón

294

Influencia de las variables psicológicas en el deporte de competición: evaluación mediante el cuestionario Características psicológicas relacionadas con el rendimiento deportivo  

Microsoft Academic Search

El objetivo de esta investigación fue analizar la influencia de variables psicológicas en la consecución de éxito, la continuidad a largo plazo y la ocurrencia de lesiones, en el contexto del deporte de com- petición. Se realizaron tres estudios con judokas, jugadores de fútbol y nadadores, utilizando como ins- trumento de evaluación el cuestionario Características Psicológicas relacionadas con el Rendimiento

Fernando Gimeno; Carmen Pérez-Llantada

2007-01-01

295

Characterization Data Package for Containerized Sludge Samples Collected from Engineered Container SCS-CON-210  

SciTech Connect

This data package contains the K Basin sludge characterization results obtained by Pacific Northwest National Laboratory during processing and analysis of four sludge core samples collected from Engineered Container SCS-CON-210 in 2010 as requested by CH2M Hill Plateau Remediation Company. Sample processing requirements, analytes of interest, detection limits, and quality control sample requirements are defined in the KBC-33786, Rev. 2. The core processing scope included reconstitution of a sludge core sample distributed among four to six 4-L polypropylene bottles into a single container. The reconstituted core sample was then mixed and subsampled to support a variety of characterization activities. Additional core sludge subsamples were combined to prepare a container composite. The container composite was fractionated by wet sieving through a 2,000 micron mesh and a 500-micron mesh sieve. Each sieve fraction was sampled to support a suite of analyses. The core composite analysis scope included density determination, radioisotope analysis, and metals analysis, including the Waste Isolation Pilot Plant Hazardous Waste Facility Permit metals (with the exception of mercury). The container composite analysis included most of the core composite analysis scope plus particle size distribution, particle density, rheology, and crystalline phase identification. A summary of the received samples, core sample reconstitution and subsampling activities, container composite preparation and subsampling activities, physical properties, and analytical results are presented. Supporting data and documentation are provided in the appendices. There were no cases of sample or data loss and all of the available samples and data are reported as required by the Quality Assurance Project Plan/Sampling and Analysis Plan.

Fountain, Matthew S.; Fiskum, Sandra K.; Baldwin, David L.; Daniel, Richard C.; Bos, Stanley J.; Burns, Carolyn A.; Carlson, Clark D.; Coffey, Deborah S.; Delegard, Calvin H.; Edwards, Matthew K.; Greenwood, Lawrence R.; Neiner, Doinita; Oliver, Brian M.; Pool, Karl N.; Schmidt, Andrew J.; Shimskey, Rick W.; Sinkov, Sergey I.; Snow, Lanee A.; Soderquist, Chuck Z.; Thompson, Christopher J.; Trang-Le, Truc LT; Urie, Michael W.

2013-09-10

296

(Con)text-specific effects of visual dysfunction on reading in posterior cortical atrophy  

PubMed Central

Reading deficits are a common early feature of the degenerative syndrome posterior cortical atrophy (PCA) but are poorly understood even at the single word level. The current study evaluated the reading accuracy and speed of 26 PCA patients, 17 typical Alzheimer's disease (tAD) patients and 14 healthy controls on a corpus of 192 single words in which the following perceptual properties were manipulated systematically: inter-letter spacing, font size, length, font type, case and confusability. PCA reading was significantly less accurate and slower than tAD patients and controls, with performance significantly adversely affected by increased letter spacing, size, length and font (cursive < non-cursive), and characterised by visual errors (69% of all error responses). By contrast, tAD and control accuracy rates were at or near ceiling, letter spacing was the only perceptual factor to influence reading speed in the same direction as controls, and, in contrast to PCA patients, control reading was faster for larger font sizes. The inverse size effect in PCA (less accurate reading of large than small font size print) was associated with lower grey matter volume in the right superior parietal lobule. Reading accuracy was associated with impairments of early visual (especially crowding), visuoperceptual and visuospatial processes. However, these deficits were not causally related to a universal impairment of reading as some patients showed preserved reading for small, unspaced words despite grave visual deficits. Rather, the impact of specific types of visual dysfunction on reading was found to be (con)text specific, being particularly evident for large, spaced, lengthy words. These findings improve the characterisation of dyslexia in PCA, shed light on the causative and associative factors, and provide clear direction for the development of reading aids and strategies to maximise and sustain reading ability in the early stages of disease. PMID:24841985

Yong, Keir X.X.; Shakespeare, Timothy J.; Cash, Dave; Henley, Susie M.D.; Warren, Jason D.; Crutch, Sebastian J.

2014-01-01

297

Iliac crest autograft versus alternative constructs for anterior cervical spine surgery: Pros, cons, and costs  

PubMed Central

Background: Grafting choices available for performing anterior cervical diskectomy/fusion (ACDF) procedures have become a major concern for spinal surgeons, and their institutions. The “gold standard”, iliac crest autograft, may still be the best and least expensive grafting option; it deserves to be reassessed along with the pros, cons, and costs for alternative grafts/spacers. Methods: Although single or multilevel ACDF have utilized iliac crest autograft for decades, the implant industry now offers multiple alternative grafting and spacer devices; (allografts, cages, polyether-etherketone (PEEK) amongst others). While most studies have focused on fusion rates and clinical outcomes following ACDF, few have analyzed the “value-added” of these various constructs (e.g. safety/efficacy, risks/complications, costs). Results: The majority of studies document 95%-100% fusion rates when iliac crest autograft is utilized to perform single level ACDF (X-ray or CT confirmed at 6-12 postoperative months). Although many allograft studies similarly quote 90%-100% fusion rates (X-ray alone confirmed at 6-12 postoperative months), a recent “post hoc analysis of data from a prospective multicenter trial” (Riew KD et. al., CSRS Abstract Dec. 2011; unpublished) revealed a much higher delayed fusion rate using allografts at one year 55.7%, 2 years 87%, and four years 92%. Conclusion: Iliac crest autograft utilized for single or multilevel ACDF is associated with the highest fusion, lowest complication rates, and significantly lower costs compared with allograft, cages, PEEK, or other grafts. As spinal surgeons and institutions become more cost conscious, we will have to account for the “value added” of these increasingly expensive graft constructs. PMID:22905321

Epstein, Nancy E.

2012-01-01

298

Do Patient-perceived Pros and Cons of Opioids Predict Sustained Higher-Dose Use?  

PubMed Central

Objectives Chronic opioid therapy (COT) is associated with various adverse outcomes, especially at higher doses, yet little is known about predictors of sustained higher-dose COT. This study aimed to ascertain, among higher-dose COT patients, the association of patient-perceived pros and cons of opioids with continued higher-dose use 1 year later. Methods Patients (N = 1229) in 2 large health plans prescribed ? 50 mg morphine-equivalent dose (MED) per day for chronic non-cancer pain completed a survey assessing opioid benefits and harms. The Prescribed Opioid Difficulties Scale questionnaire assessed psychosocial problems, concerns, benefits, and side effects related to opioid use. Logistic regression models estimated the associations of the reported benefits and problems with higher-dose continuation (? 50 mg MED/d) versus dose reduction (< 50 mg MED/d) 1 year later. Results Over 80% of participants continued higher-dose opioid use at 1 year, regardless of reported problems, concerns, side effects, pain reduction, or perceived helpfulness. Higher scores on the Prescribed Opioid Difficulties Scale Problems subscale (odds ratio = 0.79, 95% confidence interval, 0.68–0.92) and Concerns subscale (odds ratio = 0.76, 95% confidence interval, 0.65–0.90) were negatively associated with higher-dose use 1 year later. Other baseline measures (opioid helpfulness, reduction in pain, number of side effects, and side effect bothersomeness) were not significantly associated with continued higher-dose use. Discussion The large majority of patients continued using higher-dose opioids regardless of baseline characteristics. These findings suggest the difficulty of reducing opioid dose among chronic higher-dose opioid users. PMID:23535150

Thielke, Stephen M.; Turner, Judith A.; Shortreed, Susan M.; Saunders, Kathleen; LeResche, Linda; Campbell, Cynthia I.; Weisner, Constance C.; Korff, Michael V.

2013-01-01

299

(Con)text-specific effects of visual dysfunction on reading in posterior cortical atrophy.  

PubMed

Reading deficits are a common early feature of the degenerative syndrome posterior cortical atrophy (PCA) but are poorly understood even at the single word level. The current study evaluated the reading accuracy and speed of 26 PCA patients, 17 typical Alzheimer's disease (tAD) patients and 14 healthy controls on a corpus of 192 single words in which the following perceptual properties were manipulated systematically: inter-letter spacing, font size, length, font type, case and confusability. PCA reading was significantly less accurate and slower than tAD patients and controls, with performance significantly adversely affected by increased letter spacing, size, length and font (cursive < non-cursive), and characterised by visual errors (69% of all error responses). By contrast, tAD and control accuracy rates were at or near ceiling, letter spacing was the only perceptual factor to influence reading speed in the same direction as controls, and, in contrast to PCA patients, control reading was faster for larger font sizes. The inverse size effect in PCA (less accurate reading of large than small font size print) was associated with lower grey matter volume in the right superior parietal lobule. Reading accuracy was associated with impairments of early visual (especially crowding), visuoperceptual and visuospatial processes. However, these deficits were not causally related to a universal impairment of reading as some patients showed preserved reading for small, unspaced words despite grave visual deficits. Rather, the impact of specific types of visual dysfunction on reading was found to be (con)text specific, being particularly evident for large, spaced, lengthy words. These findings improve the characterisation of dyslexia in PCA, shed light on the causative and associative factors, and provide clear direction for the development of reading aids and strategies to maximise and sustain reading ability in the early stages of disease. PMID:24841985

Yong, Keir X X; Shakespeare, Timothy J; Cash, Dave; Henley, Susie M D; Warren, Jason D; Crutch, Sebastian J

2014-08-01

300

Endocrine Pathology: SC08-1 THYROID PATHOLOGY AND CYTOPATHOLOGY 2014: BETHESDA SYSTEM IN THYROID CYTOPATHOLOGY: ITS PROS AND CONS.  

PubMed

Since the publishing of The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC) in 2008, many countries have adopted the system and the results have been reported. In Korea, TBSRTC has been used officially since 2010 and the results are being reported. In this short course, I plan to discuss the systems pros and cons based on our experience.The pros are that the system issues recommendation for treatment or follow-up and malignant ratio for each category, and that the system uses uniform terminology which offers easy and accurate communication and enhances reliable sharing of data. The cons are that because the issued malignant ratio is not a real data and it is actually different in every institution, the offered recommendation needs to be accommodated. PMID:25188060

Hong, Soon Won

2014-10-01

301

El Parque Municipal de El Campello exhibe Las Meninas realizadas con material reciclado por profesores de la Universidad de Alicante  

E-print Network

reutilizados con el objetivo de fomentar el reciclaje a través del arte. La inauguración de la muestra contó exposición viva". Vida/reciclaje versus muerte/no reciclaje El hilo conductor de la exposición, realizada por (ingeniero industrial), todos ellos de la Universidad de Alicante, es transmitir el mensaje de la vida/reciclaje

Escolano, Francisco

302

Con A-Propagated, Auto-Reactive T Cell Clones that Secrete Factors Promoting High IgA Responses  

Microsoft Academic Search

Four BALB\\/c T cell clones from among a set propagated in the presence of concanavalin A (Con A) were selected on the basis of their ability to produce supernatant factors promoting high IgA plaque-forming cell (PFC) responses by 2,4,6-trinitrophenyl-conjugated keyhole limpet hemocyanin (TNP-KLH)-primed splenic B cells in the presence of TNP-SRBC. Such clones could be derived from cultures containing T

Azzam Al Maghazachi; Julia M. Phillips-Quagliata

1988-01-01

303

Effetti di un trattamento cinesiterapico e idrocinesiterapico termale in pazienti con osteoporosi post-menopausale: studio randomizzato controllato  

Microsoft Academic Search

Introduzione L'Osteoporosi è un vero e proprio problema sociale ed economi- co destinato a diventare sempre più importante con il progressivo invecchiamento della popolazione i cui costi sono legati soprattutto alla gestione delle complicanze (fratture)1 e all'impatto dei loro fre- quenti esiti disabilitanti sulle attività della vita quotidiana che, soprattutto nell'anziano, possono sfociare in uno stato di non-auto- sufficienza cronica2.

S. MASIERO; L. BONALDO; A. CELIA; E. GOMIERO; S. BUJA; A. STECCO; M. DE FABRITIIS; A. LALLI; C. FERRARO

304

Proteja su almuerzo de los grmenes Lvese las manos con agua caliente y jabn antes de preparar el almuerzo.  

E-print Network

Proteja su almuerzo de los gérmenes · Lávese las manos con agua caliente y jabón antes de preparar botella térmica de boca ancha. Vierta agua hirviendo en la botella para calentar el interior. Luego caliente el alimento a 1650 F. Vacíe el agua caliente de la bo- tella y vierta en su interior el alimento

305

Disminución de las tasas de cáncer de seno relacionada con la reducción del uso de terapias de reemplazo hormonal  

Cancer.gov

La tasa de los casos nuevos de cáncer de seno en los Estados Unidos, la cual disminuyó pronunciadamente en 2003, podría estar relacionada con una disminución nacional del uso de terapias de reemplazo hormonal. Las tasas de incidencia de cáncer de seno ajustadas a la edad en mujeres de los Estados Unidos bajaron un 6.7 por ciento en 2003. Durante este mismo período, las recetas médicas para terapias de reemplazo hormonal bajaron rápidamente.

306

Mitochondria-Dependent Apoptosis of Con A-Activated T Lymphocytes Induced by Asiatic Acid for Preventing Murine Fulminant Hepatitis  

PubMed Central

Selectively facilitating apoptosis of activated T cells is essential for the clearance of pathogenic injurious cells and subsequent efficient resolution of inflammation. However, few chemicals have been reported to trigger apoptosis of activated T cells for the treatment of hepatitis without affecting quiescent T cells. In the present study, we found that asiatic acid, a natural triterpenoid, selectively triggered apoptosis of concanavalin A (Con A)-activated T cells in a mitochondria-dependent manner indicated by the disruption of the mitochondrial transmembrane potential, release of cytochrome c from mitochondria to cytosol, caspases activation, and cleavage of PARP. In addition, asiatic acid also induced the cleavage of caspase 8 and Bid and augmented Fas expression in Con A-activated T cells. However, following activation of T cells from MRLlpr/lpr mice with mutation of Fas demonstrated a similar susceptibility to asiatic acid-induced apoptosis compared with normal T cells, suggesting that Fas-mediated death-receptor apoptotic pathway does not mainly contribute to asiatic acid-induced cell death. Furthermore, asiatic acid significantly alleviated Con A-induced T cell-dependent fulminant hepatitis in mice, as assessed by reduced serum transaminases, pro-inflammatory cytokines, and pathologic parameters. Consistent with the in vitro results, asiatic acid also induced apoptosis of activated CD4+ T cells in vivo. Taken together, our results demonstrated that the ability of asiatic acid to induce apoptosis of activated T cells and its potential use in the treatment of T-cell-mediated inflammatory diseases. PMID:23029367

Guo, Wenjie; Liu, Wen; Hong, Shaocheng; Liu, Hailiang; Qian, Cheng; Shen, Yan; Wu, Xuefeng; Sun, Yang; Xu, Qiang

2012-01-01

307

Integrated Concentration in Science (iCons): Undergraduate Education Through Interdisciplinary, Team-Based, Real-World Problem Solving  

NASA Astrophysics Data System (ADS)

Attitude, Skills, Knowledge (ASK) -- In this order, these are fundamental characteristics of scientific innovators. Through first-hand practice in using science to unpack and solve complex real-world problems, students can become self-motivated scientific leaders. This presentation describes the pedagogy of a recently developed interdisciplinary undergraduate science education program at the University of Massachusetts Amherst focused on addressing global challenges with scientific solutions. Integrated Concentration in Science (iCons) is an overarching concentration program that supplements the curricula provided within each student's chosen major. iCons is a platform for students to perform student-led research in interdisciplinary collaborative teams. With a schedule of one course per year over four years, the cohort of students move through case studies, analysis of real-world problems, development of potential solutions, integrative communication, laboratory practice, and capstone research projects. In this presentation, a track emphasizing renewable energy science is used to illustrate the iCons pedagogical methods. This includes discussion of a third-year laboratory course in renewable energy that is educationally scaffolded: beginning with a boot camp in laboratory techniques and culminating with student-designed research projects. Among other objectives, this course emphasizes the practice of using reflection and redesign, as a means of generating better solutions and embedding learning for the long term.

Tuominen, Mark

2013-03-01

308

Anti-human IG and B lymphocytes reconstitute the proliferative response to Con A of T lymphocytes depleted of accessory cells  

SciTech Connect

The requirements for the induction of proliferation of human peripheral blood mononuclear cells (PBM) by low concentrations of Concanavalin A (Con A) were studied using /sup 3/H-thymidine incorporation to assay DNA synthesis. Removal of plastic-adherent cells from PBM reduced the proliferative response of lymphocytes to Con A by 80%. Passage of these cells over nylon wool columns totally eliminated their response to Con A. Addition of adherent monocytes or rabbit anti-human IgG conjugated to polyacrylamide beads (anti-IgG beads) to the non-adherent lymphocyte population reconstituted the proliferative response. The lymphoblasts activated in these cultures were more than 90% T11 positive. Anti-IgG beads did not activate lymphocyte proliferation in the absence of Con A. The response of non-adherent lymphocytes to Con A could also be reconstituted by unconjugated rabbit anti-human IgG antiserium. Purified T cells could only be activated by anti-IgG beads and low concentrations of Con A in the presence of irradiated B cells. These results suggest that /sup 3/H-thymidine incorporation by T cells induced by anti-IgG beads and a low concentration of Con A depends on the interaction of anti-IgG and B cells. The authors suggest that B cell produce growth factors for T cells after interacting with anti-IgG.

Tsuda, T.; Kim, Y.T.; Schwab, R.; Siskind, G.W.; Weksler, M.E.

1986-03-01

309

40 CFR 60.211 - Definitions.  

Code of Federal Regulations, 2012 CFR

...STATIONARY SOURCES Standards of Performance for the Phosphate Fertilizer Industry: Superphosphoric Acid Plants § 60.211 Definitions...P2 O5 content by weight for eventual consumption as a fertilizer. (b) Total fluorides means elemental fluorine...

2012-07-01

310

40 CFR 60.211 - Definitions.  

Code of Federal Regulations, 2013 CFR

...STATIONARY SOURCES Standards of Performance for the Phosphate Fertilizer Industry: Superphosphoric Acid Plants § 60.211 Definitions...P2 O5 content by weight for eventual consumption as a fertilizer. (b) Total fluorides means elemental fluorine...

2013-07-01

311

Nanoparticulas basadas en complejos de Fe(II) con transicion de espin: sintesis, caracterizacion y aplicaciones en electronica molecular  

NASA Astrophysics Data System (ADS)

Esta tesis doctoral esta organizada en 5 capitulos y esta destinada al estudio de sistemas de Fe (II) que presentan el fenomeno de la transicion de espin a escala nanometrica. El capitulo 1 contiene una introduccion general sobre materiales moleculares multifuncionales, destacando aquellos ejemplos mas importantes. Por otro lado, se explicara el fenomeno de la transicion de espin, tratando aspectos conceptuales, los antecedentes mas importantes y la situacion actual. En el capitulo 2 se describen los diferentes procesos existentes para la obtencion de diferentes tipos de nanoparticulas. Ademas, se presenta la sintesis y caracterizacion de nanoparticulas del polimero de coordinacion unidimensional [Fe(Htrz)2(trz)]BF4, obtenidas mediante el metodo de micelas inversas. Estas nanoparticulas, con una estrecha distribucion de tamanos centrada alrededor de los 11 nm, presentan una transicion de espin muy abrupta, con un ancho ciclo de histeresis termica de unos 40K. En el capitulo 3 se describe el proceso de modificacion del tamano de las nanoparticulas descritas en el capitulo anterior, llevado a cabo variando la proporcion de surfactante/H2O en el medio. Ademas, con el objetivo de modificar las propiedades magneticas de las nanoparticulas obtenidas en el capitulo 2, se lleva a cabo la sintesis de nanoparticulas de polimeros de la misma familia del [Fe(Htrz)2(trz)]BF4. En concreto se sintetizaron 3 nuevos tipos de nanoparticulas basadas en el polimero [Fe(Htrz)1-x(NH2trz)x](ClO4)2, siendo x = 0.05, 0.15 y 0.3, en cada caso. Estas nanoparticulas siguen presentando una estrecha distribucion de tamanos y una transicion de espin muy abrupta y con un ancho ciclo de histeresis. Ademas, se observa que este ciclo se desplaza a temperaturas mas proximas a la temperatura ambiente a medida que se aumenta el porcentaje de 4-amino-1, 2, 4- triazol en la muestra. Pero al mismo tiempo se produce una disminucion de la anchura de este ciclo. Por ultimo, en este capitulo se presenta la sintesis de otro nuevo tipo de nanoparticulas, obtenidas a partir de otro polimero de la misma familia, el [FeO8ZnO2(Htrz)3](BF4). Estas nanoparticulas se sintetizaron con el objetivo de estudiar el efecto de la dilucion del metal en la muestra. Como resultado se obtuvieron nanoparticulas que tambien presentan una estrecha distribucion de tamanos pero en este caso la transicion de espin no es tan abrupta como en los casos anteriores. Aunque sigue presentando un ciclo de histeresis termica bastante ancho y a temperaturas proximas a la temperatura ambiente. En el capitulo 4 se describiran las estrategias que se han seguido para mejorar la estabilidad y afinidad sobre diferentes sustratos de las nanoparticulas sintetizadas en el capitulo 2. Tambien se hablara de los intentos realizados parar depositarlas en superficies y embeberlas en diferentes matrices organicas e inorganicas. En el capitulo 5 presentaremos la obtencion de un interruptor molecular realizado poniendo en contacto nanoparticulas individuales sintetizadas en el capitulo 2, con unos electrodos separados varios nanometros. Este dispositivo exhibe "switching" y efecto memoria a temperaturas proximas a la temperatura ambiente como consecuencia de la biestabilidad intrinseca de las nanoparticulas. Ademas demostraremos que el estado magnetico de estas nanoparticulas puede ser controlado electricamente, ya que la transicion de espin en este nanodispositivo molecular puede ser inducida simplemente aplicando un voltaje, lo que puede ser de gran interes para la electronica molecular.

Monrabal Capilla, Maria

312

To be presented at the Fourth International Workshop on Virtual Rehabilitation, Catalina Island, CA, September 2005. Usability of the Remote Console (ReCon) for Virtual Reality  

E-print Network

, September 2005. Usability of the Remote Console (ReCon) for Virtual Reality Telerehabilitation: Formative reality rehabilitation exercises. It provides the therapists with visual representations of the patients. Keywords virtual reality, telerehabilitation, physical therapy, formative evaluation, usability engineering

New Jersey, University of Medicine and Dentistry of

313

Facolt proponente: Facolt di Economia dell'Universit di Genova in collaborazione con: Aon, AXA Corporate Solutions, Banchero Costa Insurance Broker, Cambiaso Risso  

E-print Network

Facoltà proponente: Facoltà di Economia dell'Università di Genova in collaborazione con: Aon, AXA specialistici in Economia, Giurisprudenza, Scienze politiche. La partecipazione al corso può essere gratuita

Genova, Università degli Studi di

314

Facolt proponente: Facolt di Economia dell'Universit di Genova in collaborazione con: Centro Sportivo Paladonbosco, ANIF -EuroWellness Associazione Nazionale Impianti  

E-print Network

Facoltà proponente: Facoltà di Economia dell'Università di Genova in collaborazione con: Centro'innovazione nella gestione delle problematiche connesse. Laureati in Architettura, Economia, Giurisprudenza

Genova, Università degli Studi di

315

Presentaci?n del estudio "Links" de hombres que tienes sexo con hombres en Buenos Aires, Argentina  

PubMed Central

Resumen Estudios previos en Buenos Aires reportaron altas prevalencias de HIV entre HSH, con valores que oscilan entre 9 y 14% durante casi 10 años de continuo testeo. El objetivo principal de este estudio fue la evaluación de factores relacionados al comportamiento de alto riesgo para transmisión del HIV entre HSH entre los que se incluyen el conocimiento y factores emocionales, socioculturales y ambientales. Por otro lado se realizó la estimación de prevalencia e incidencia de HIV utilizando RDS (Respondent Driven Sampling), así como la presencia de otras infecciones de transmisión sexual. Por último se evaluaron los hábitos de testeo para HIV indagando que factores facilitan o impiden su realización. El estudio constó de dos fases, en primer lugar una fase cualitativa y posteriormente una fase cuantitativa con una duración total de 4 años y medio. Durante la fase cualitativa se realizaron 44 entrevistas individuales en profundidad, 8 grupos focales y 10 observaciones etnográficas (hoteles, baños públicos (“teteras”), cines pornográficos, fiestas privadas, dark rooms y discotecas). Durante la fase cuantitativa del estudio se realizó el reclutamiento de 500 participantes que provinieron de la Ciudad Autónoma de Buenos Aires, así como del Gran Buenos Aires. El reclutamiento se comenzó con 16 participantes llamados semillas. Se realizó el diagnóstico de infección por HIV, hepatitis B y C (HBV y HCV), Treponema pallidum, Virus Papiloma Humano (HPV) y Chlamidias. La colaboración establecida entre los grupos de trabajo enfocados en áreas diversas posibilitó el abordaje conjunto de nuevas estrategias de investigación antes no exploradas en nuestro país. Los resultados más relevantes de esta investigación serán progresivamente publicados en sucesivos números de Actualizaciones en SIDA.

Carballo-Dieguez, Alex; Avila, Maria M; Balan, Ivan C.; Marone, Ruben; Pando, Maria A.; Barreda, Victoria

2011-01-01

316

Una cinta transportadora de longitud l se mueve con velocidad v respecto al suelo. Por su extremo derecho se introduce un bloque de masa m que se mover en contra de la cinta  

E-print Network

Problema 2 Una cinta transportadora de longitud l se mueve con velocidad v respecto al suelo. Por). Determine la velocidad vo (respecto al suelo) con la cual es necesario impulsar el bloque contra el, y que ahí se detenga respecto al suelo. En tal punto, con el bloque en reposo respecto al suelo

Chang, Mark J. L.

317

SOBREPESO Y OBESIDAD EN NIÑOS Y ADOLESCENTES DE LA CIUDAD DE CORRIENTES ASOCIACIÓN CON FACTORES DE RIESGO CARDIOVASCULAR  

Microsoft Academic Search

sos, con predominio en varones (OR=1.46; IC=1.12-1.91; p=0.03). Actividad física semanal: 3.9 ± 2.9 hs. mayor en varones (p<0.001). Horas de sedentarismo: 3.2 ± 1.9. Antecedentes: obesidad materna 282 (13.3%), paterna 311 (14.7%), en ambos 116 (6.6%). Consumo regular de comidas grasas: 1711 (80.9%). PAS: 107.8 ± 13.6; PAD: 66.9 ± 11.5; PAM: 80.5 ± 10.1. Hipertensos 64 (3%) a

CARLOS A. MARTÍNEZ; JULIO O. IBÁÑEZ; CARLOS A. PATERNO; MIRTHA SEMENZA DE ROIG; MARÍA ITATÍ HEITZ; JORGE O. KRISKOVICH; GRISELDA R. DE BONIS; LIZ C. CÁCERES

2001-01-01

318

Metal ion determinants of conantokin dimerization as revealed in the X-ray crystallographic structure of the Cd 2+ \\/Mg 2+ –conT[K7?] complex  

Microsoft Academic Search

Predatory sea snails from the Conus family produce a variety of venomous small helical peptides called conantokins that are rich in ?-carboxyglutamic acid (Gla)\\u000a residues. As potent and selective antagonists of the N-methyl-d-aspartate receptor, these peptides are potential therapeutic agents for a variety of neurological conditions. The two most\\u000a studied members of this family of peptides are con-G and con-T.

Sara E. Cnudde; Mary Prorok; Francis J. Castellino; James H. Geiger

2010-01-01

319

Geometria III, Problemas 6 Segundo semestre, 2009/10. (R) es el plano proyectivo con la estructura diferencial estudiada en clase.  

E-print Network

estructura diferencial estudiada en clase. Sea f : P2 (R) R definida como f[x, y, z] = x2 x2 + y2 + z2 admite una estructura de variedad de dimensi´on 3 con un atlas de una sola carta (M, ) donde (C) = (x, y. Tras identificarlo con R4 , M recibe una estructura diferencial a partir de la estructura diferencial

Guijarro, Luis

320

Analysis of cancer risk and BRCA1 and BRCA2 mutation prevalence in the kConFab familial breast cancer resource  

Microsoft Academic Search

INTRODUCTION: The Kathleen Cuningham Foundation Consortium for Research into Familial Breast Cancer (kConFab) is a multidisciplinary, collaborative framework for the investigation of familial breast cancer. Based in Australia, the primary aim of kConFab is to facilitate high-quality research by amassing a large and comprehensive resource of epidemiological and clinical data with biospecimens from individuals at high risk of breast and\\/or

Graham J Mann; Heather Thorne; Rosemary L Balleine; Phyllis N Butow; Christine L Clarke; Edward Edkins; Gerda M Evans; Sián Fereday; Eric Haan; Michael Gattas; Graham G Giles; Jack Goldblatt; John L Hopper; Judy Kirk; Jennifer A Leary; Geoffrey Lindeman; Eveline Niedermayr; Kelly-Anne Phillips; Sandra Picken; Gulietta M Pupo; Christobel Saunders; Clare L Scott; Amanda B Spurdle; Graeme Suthers; Kathy Tucker; Georgia Chenevix-Trench

2006-01-01

321

Structural studies of boron and tellurium coordination in zinc borophosphate glasses by 11B MAS NMR and Raman spectroscopy  

Microsoft Academic Search

Zinc borophosphate glasses doped with TeO2 with different B2O3\\/P2O5 ratio were prepared, their basic properties were determined and their structure was studied by 11B MAS NMR and Raman spectroscopies. Structural studies were devoted to the investigation of changes in boron coordination in the dependence on changes in TeO2 content and in B2O3\\/P2O5 ratio in the borophosphate glasses. A special attention

Kate?ina Vosejpková; Ladislav Koudelka; Zden?k ?ernošek; Petr Mošner; Lionel Montagne; Bertrand Revel

322

Relationship between nitrogen and phosphate surplus from agricultural production and river water quality in two types of production structure  

Microsoft Academic Search

We examined the relationship between nitrogen (N) and phosphate (P2O5) surplus derived from agriculture and river water quality. We selected two river basins; one was a paddy farming area (Omoigawa) and the other was an intensive livestock husbandry area (Nakagawa). Nitrogen and P2O5 surpluses, defined as the difference between their input and output on regional farmland, from farmland in Omoigawa

Shin-Ichiro Mishima; Satoru Taniguchi; Kazunori Kohyama; Michio Komada

2007-01-01

323

Nitrogen Fertilization of Golden Shiner Ponds  

Microsoft Academic Search

Ammonium sulfate and sodium nitrate were used as nitrogen fertilizers in 0.1-ha ponds stocked with golden shiners Notemigonus crysoleucas at Auburn, Alabama. Biweekly from 30 March to 15 October 1999, 9 kg P2O5\\/ha from triple superphosphate and 9 kg N\\/ha were applied to treatment ponds. Control ponds were treated only with biweekly applications of triple superphosphate at 9 kg P2O5\\/ha.

Yalcin Tepe; Claude E. Boyd

2002-01-01

324

Modelo de accesibilidad de conceptos matematicos aplicados en el curso de Astronomia Descriptiva para estudiantes con impedimentos visuales en la UPR  

NASA Astrophysics Data System (ADS)

Este estudio utiliza metodologia de investigacion cualitativa, con el proposito de describir, analizar y evaluar los procesos de diseno y desarrollo de un modelo de accesibilidad que consiste en estrategias de ensenanza de las matematicas para estudiantes con impedimentos visuales matriculados en el curso de Astronomia Descriptiva en la UPR. Se utilizaron las siguientes estrategias para recopilar la informacion, 1) reflexiones de la investigadora en el proceso de diseno y desarrollo de las lecciones adaptadas, que se registraron en un diario reflexivo. 2) entrevista semiestructurada luego de haber trabajado las lecciones de aprendizaje adaptadas con los participantes. 3) observaciones y notas de la investigadora del trabajo de los participantes. Para obtener la informacion de los participantes se obtuvo los permisos institucionales necesarios; se seleccionaron los participantes y se validaron los instrumentos; se realizo el desarrollo de las lecciones adaptadas con los participantes; y finalmente, se analizo la informacion obtenida. El diseno de las lecciones de aprendizaje adaptadas se hizo siguiendo las recomendaciones curriculares de los temas de matematicas aplicados en el curso de Astronomia Descriptiva realizado por la investigadora durante su semestre de internado. El testimonio de las voces de los participantes se obtuvo del proceso de desarrollo de las lecciones de aprendizaje adaptadas de temas seleccionados de conceptos matematicos requeridos en el curso de Astronomia Descriptiva y de la entrevista semiestructurada con los participantes, luego de haber trabajado las lecciones de aprendizaje. Para el desarrollo de las lecciones de aprendizaje, se utilizaron materiales tactiles adaptados, materiales tactiles disenados y materiales disponibles comercialmente. Los textos de las lecciones se imprimieron en tinta y en Braille. Se exhorta a disenar y desarrollar estrategias de ensenanza accesibles, considerando como recursos para evaluar su efectividad a personas con impedimentos visuales. El utilizar estrategias de aprendizaje accesibles de acuerdo a las necesidades individuales de los estudiantes, contribuye para que los estudiantes con impedimentos visuales descubran, exploren, investiguen y formulen sus propias conclusiones durante su proceso de aprendizaje.

Isidro Villamizar, Gloria Maria

325

ON EFFECT OF HAZARD MAP ON CONS CIOUSNESS OF FLOOD DISASTER PREVENSION OF RESIDENTS WHO EXPERIENCED FLOOD RECENTLY  

NASA Astrophysics Data System (ADS)

In this paper, the effect of the flood hazard map distributed to the residents who experienced flood disasters recently and an effective method for improving consciousness of flood di saster prevention are discussed. The questionnaire surveys were conducted on the residents living in the middle basin of the Nishiki River, Iwakuni city, Yamaguchi Prefecture, before and after the distribution of the hazard map. It is found from this investigation that "knowledge", "att achment", and "crisis", are the main factors in the psychological process related to the flood prevention behavior. The effect of the distribution of the hazard map is judged from the probability of the flood prevention behavior. In addition, it is also found that "knowledge", "flood experiment of T0514", "crisis", "eff ectiveness", "load", and "easy reading of the hazard map", are keys to improve the cons ciousness of flood di saster prevention.

Asai, Koji; Koga, Syota; Sakakibara, Hiroyuki

326

Intraspecific alkaloid variation in ladybird eggs and its effects on con- and hetero-specific intraguild predators.  

PubMed

Egg predation and cannibalism are common phenomena in predatory ladybirds despite the presence of defensive alkaloids. Consumption of heterospecific eggs negatively affects survivorship and development; however, intraspecific variation in quantities of alkaloids and post-ingestion responses to con- and hetero-specific alkaloids, are not well understood. We examined variation in the quantity of alkaloids in eggs of Harmonia axyridis (Pallas), Coccinella septempunctata L., and Hippodamia convergens (Guérin) using gas chromatography-mass spectrometry, and show a link between heterospecific alkaloids and their toxicity and/or costs by feeding high and low alkaloid eggs to first instar H. axyridis and C. septempunctata. The repeatability of alkaloid measurements in eggs in an egg cluster was high; however, the amount of alkaloids varied significantly between egg clutches within and among females. This variation affected egg consumption by C. septempunctata when fed H. axyridis eggs. Harmonia axyridis accumulated their own alkaloid by cannibalism and synthesized it de novo, but C. septempunctata lost some portion of the consumed conspecific alkaloids. Both species lost most of the consumed heterospecific alkaloids, but C. septempunctata died within 3 days. Most H. axyridis survived to the second instar, but C. septempunctata alkaloids led to a significant reduction in weight gain compared to an aphid control. In addition, ingestion of high alkaloid C. septempunctata extended development of H. axyridis compared to the aphid control or conspecific eggs. Harmonia axyridis had greater abilities to process ingested con- and hetero-specific alkaloids compared with C. septempunctata, which may, in part, explain their interspecific interactions in nature. PMID:20049478

Kajita, Yukie; Obrycki, J J; Sloggett, J J; Haynes, K F

2010-06-01

327

Lectin from Canavalia brasiliensis (ConBr) protects hippocampal slices against glutamate neurotoxicity in a manner dependent of PI3K/Akt pathway.  

PubMed

The excitotoxicity induced by excessive activation of the glutamatergic neurotransmission pathway is involved in several neuropathologies. In this sense, molecules that prevent the release of glutamate or the excessive activation of its receptors can be useful in preventing the neuronal cell death observed in these diseases. Lectins are proteins capable of reversible binding to the carbohydrates in glycoconjugates, and some have been used in the study and purification of glutamate receptors. ConBr is a mannose/glucose-binding lectin purified from Canavalia brasiliensis seeds. In the present study, we aimed to evaluate the neuroprotective activity of ConBr against glutamate-induced excitotoxicity. Hippocampal slices were isolated from adult male mice and incubated for 6h in Krebs saline/DMEM buffer alone (control), in the presence of glutamate or glutamate plus ConBr. The phosphorylation of Akt and mitogen activated protein kinases (MAPKs) such as ERK1/2, p38(MAPK) and JNK1/2/3 was evaluated with western blotting. The results indicate that glutamate provoked a reduction in the hippocampal slice viability (-25%), diminished the phosphorylation of Akt and augmented p38(MAPK) and ERK1 phosphorylation. No changes were observed in the phosphorylation of JNK1/2/3 or ERK2. Notably, ConBr, through a mechanism dependent on carbohydrate interaction, prevented the reduction of cell viability and Akt phosphorylation induced by glutamate. Furthermore, in the presence of the PI3K inhibitor LY294002, ConBr was unable to reverse glutamate neurotoxicity. Taken together, our data suggest that the neuroprotective effect of ConBr against glutamate neurotoxicity requires oligosaccharide interaction and is dependent on the PI3K/Akt pathway. PMID:23454192

Jacques, Amanda V; Rieger, Débora K; Maestri, Mariana; Lopes, Mark W; Peres, Tanara V; Gonçalves, Filipe M; Pedro, Daniela Z; Tasca, Carla I; López, Manuela G; Egea, Javier; Nascimento, Kyria S; Cavada, Benildo S; Leal, Rodrigo B

2013-05-01

328

Selenium Promotes T-Cell Response to TCR-Stimulation and ConA, but Not PHA in Primary Porcine Splenocytes  

PubMed Central

There is controversy in the literature over whether the selenium (Se) influences cellular immune responses, and the mechanisms possibly underlying these effects are unclear. In this study, the effects of Se on T-cell proliferation and IL-2 production were studied in primary porcine splenocytes. Splenocytes were treated with different mitogens in the presence of 0.5–4 µmol/L sodium selenite. Se significantly promoted T-cell receptor (TCR) or concanavalin A (ConA)-induced T-cell proliferation and IL-2 production but failed to regulate T-cell response to phytohemagglutinin (PHA). In addition, Se significantly increased the levels of cytosolic glutathione peroxidase (GPx1) and thioredoxin reductase 1 (TR1) mRNA, the activity of GPx1 and the concentration of reduced glutathione (GSH) in the unstimulated, or activated splenocytes. These results indicated that Se improved the redox status in all splenocytes, including unstimulated, TCR, ConA and PHA -stimulated, but only TCR and ConA-induced T-cell activation was affected by the redox status. N-acetylcysteine (NAC), a pharmacological antioxidant, increased T-cell proliferation and IL-2 production by TCR and ConA stimulated splenocytes but had no effect on the response to PHA in primary porcine splenocytes confirming that PHA-induced T-cell activation is insensitive to the redox status. We conclude that Se promotes GPx1 and TR1 expression and increases antioxidative capacity in porcine splenocytes, which enhances TCR or ConA -induced T-cell activation but not PHA-induced T-cell activation. The different susceptibilities to Se between the TCR, ConA and PHA -induced T-cell activation may help to explain the controversy in the literature over whether or not Se boosts immune responses. PMID:22530011

Ren, Fei; Chen, Xingxiang; Hesketh, John; Gan, Fang; Huang, Kehe

2012-01-01

329

Inversor Resonante de Tres Elementos L-LC con Caracteristica Cortocircuitable para Aplicaciones de Calentamiento por Induccion  

NASA Astrophysics Data System (ADS)

Los generadores de calentamiento por induccion son puentes inversores con carga resonante, cuya mision es basicamente crear una corriente sinusoidal de gran amplitud sobre la "bobina de caldeo", que forma parte del tanque resonante. En el interior de esta bobina se introduce la pieza que se desea calentar. EI campo magnetico creado induce corrientes superficiales (corrientes de Foucault) sobre la pieza, que producen su calentamiento. Los tanques resonantes (tambien llamados osciladores) utilizados en la actualidad son el resonante serie y el resonante paralelo. Aunque ya desde hace algun tiempo se vienen construyendo generadores de alta potencia basados en estos dos osciladores, el exito nunca ha. sido completo en ninguno de los dos casos. Tal y como se explica en la introduccion de esta memoria, los puentes inversores utilizados deben operar sobre una carga inductiva (corriente retrasada) para evitar el fenomeno de la recuperacion inversa de sus diodos y la consiguiente ruptura de los transistores. De la restriccion topologica anterior se deduce que el generador paralelo debe conmutar a frecuencias inferiores a la resonancia, y el serie a frecuencias superiores. A esta restriccion topologica hay que unir otra que es exclusiva del calentamiento por induccion: La corriente por la bobina de caldeo debe ser sinusoidal. De no ser asi, resultaria imposible disponer toda la potencia de calentamiento sobre la pieza en el espesor requerido por la aplicacion. Como consecuencia, los inversores no pueden operar por debajo de la frecuencia de resonancia del oscilador, pues en ese caso se amplifican los armonicos de orden superior de la tension/corriente de entrada situados sobre la resonancia, con la consiguiente distorsion de la corriente de salida. La conjuncion de las dos restricciones anteriores obligan al inversor paralelo a funcionar a la frecuencia de resonancia del oscilador. Esto imposibilita un control por variacion de frecuencia, regulandose la potencia desde la seccion de entrada mediante un mayor o menor aporte de corriente al puente. Como consecuencia, la seccion de entrada del paralelo, ya de por si mas voluminosa que lao del serie por el uso de grandes componentes magneticos (bobinas de filtro o de "alisamiento"), result a tambien mas complicada y costosa debido a la necesidad de ser implementada mediante rectificador controlado. Ademas, la regulacion que ofrece el rectificador es pobre, dada su baja frecuencia de conmutacion. En cambio, el circuito serie puede funcionar por encima de la resonancia manteniendo una secuencia de conmutacion sin riesgos de recuperacion inversa y con una corriente de salida practicamente sinusoidal, lo que permite un control de la potencia por variacion de frecuencia. Puesto que la tarea de regulacion se realiza desde el puente inversor, la regulacion resulta mucho mas eficaz y la seccion de entrada se puede implementar mediante un simple rectificador no controlado y un condensador de filtro. (Abstract shortened by UMI.).

Espi Huerta, Jose Miguel

330

AVANCE GENÉTICO EN APTITUD COMBINATORIA CON MESTIZOS AUTOFECUNDADOS, MULTIALELISMO Y PROBADORES HOMOCIGÓTICOS GENETIC ADVANCE FOR COMBINING ABILITY WITH SELFED TESTCROSSES, MULTIPLE ALLELES, AND HOMOZYGOUS TESTERS  

Microsoft Academic Search

La selección recurrente para aptitud combinatoria en cultivos autógamos (SRAC), aunque exitosa, enfrenta dificultades para ha- cer las cruzas y para obtener suficiente semilla de éstas. Además, las derivaciones de la respuesta a la SRAC (R) basadas en el mode- lo de dos alelos pueden no ser adecuadas si la población se formó con más de dos progenitores. El objetivo

Jaime Sahagún-Castellanos; Autónoma Chapingo

2002-01-01

331

Synthesis, growth, structural, spectral, thermal, chemical etching, linear and nonlinear optical and mechanical studies of an organic single crystal 4-chloro 4-nitrostilbene (CONS): A potential NLO material  

NASA Astrophysics Data System (ADS)

4-Chloro 4-nitrostilbene (CONS) a new organic nonlinear optical material has been synthesized. Employing slow evaporation method, good optical quality single crystals (dimensions up to 6 × 2 × 3 mm3) have been grown using ethyl methyl ketone (EMK) as a solvent. The grown crystals have been subjected to various characterizations such as single crystal X-ray diffraction, powder XRD, Fourier Transform Infrared spectroscopy (FTIR), proton NMR, solid UV absorption, SHG studies. Single crystal X-ray diffraction reveals that the crystal system belongs to monoclinic with noncentrosymmetric space group P21. The UV-Vis absorption spectrum has been recorded and found that the cut off wavelength is 380 nm. Functional groups and the structure of the title compound have been confirmed by FTIR and 1H NMR spectroscopic analyses respectively. Molecular mass of the CONS confirmed by the high resolution mass spectral analysis .The thermal behavior of the grown crystal has been studied by TG/DTA analysis and it shows the melting point is at 188.66 °C. Dislocations and growth pattern present in the grown crystal revealed by the etching study. The mechanical strength of the CONS crystal has been studied by Vicker's hardness measurement. The SHG efficiency of the grown crystal has been determined by Kurtz and Perry powder test which revealed that the CONS crystal (327 mV) has 15 times greater efficiency than that of KDP (21.7 mV).

Dinakaran, Paul M.; Kalainathan, S.

2013-07-01

332

INTERNATIONAL SERIES IN PURE AND APPLIED PHYSICS LEO N A R D 1. S CHI F F, CON S U L TIN G E D ITO R  

E-print Network

INTERNATIONAL SERIES IN PURE AND APPLIED PHYSICS LEO N A R D 1. S CHI F F, CON S U L TIN G E D ITO R Allis and Herlin Thermodynamics and Statistical Mechanics Becker Introduction to Theoretical Mechanics Clark Applied X-rays Collin Field Theory of Guided Waves Evans The Atomic Nucleus Finkelnburg

Allen, Jont

333

¿Es segura la combinacion de IECA o ARA II con espironolactona? Is the combination of ACE inhibitors and ASA with spirolactone safe?  

Microsoft Academic Search

Resumen Objetivos: determinar si en pacientes evaluados por hiperpotasemia en un servicio de nefrología la combinación IECA (inhibidores de enzima convertidora de angiotensina II) o ARA II (antagonistas del receptor de angiotensina II) con espironolactona estaba presente y qué consecuencias tuvo sobre el grupo de pacientes identificados. Diseño: estudio de tipo observacional, descriptivo retrospectivo y prospectivo. Lugar: unidad renal STR

TRABAJOS ORIGINALES; CÉSAR A. RESTREPOMANIZALES

2005-01-01

334

Nominativo Sede seggioSeggio Elezioni R.S.U. -5/7 marzo 2012 -elenco del personale con seggio assegnato  

E-print Network

Nominativo Sede seggioSeggio Elezioni R.S.U. - 5/7 marzo 2012 - elenco del personale con seggio - C.U.2 ERCOLI Carla AULA RSU PIANO ­ 3, OSPEDALE SANT'ANDREA - VIA DI GROTTAROSSA, 103513 ERMILI MINERALOGIA - C.U.2 FABRIZIO Luigi AULA RSU PIANO ­ 3, OSPEDALE SANT'ANDREA - VIA DI GROTTAROSSA, 103513

Guidoni, Leonardo

335

474 The american biology Teacher volume 73, no. 8, ocTober 2011 The accumulation of plastic in the oceans is an ever-growing environmental con-  

E-print Network

of plastic pollution. They can be modified to be appro- priate for grades 6­10. Oikonos Ecosystem Knowledge. The plastic-pollution curriculum described here was further developed and modified by CAMEOS, a National of plastic in the oceans is an ever-growing environmental con- cern. Plastic debris is a choking

Schladow, S. Geoffrey

336

ConSoil 2005 -Abstract form Title of abstract Alcohol Flushing: Parameter Estimation for a cost efficient in-situ remediation  

E-print Network

ConSoil 2005 - Abstract form Title of abstract Alcohol Flushing: Parameter Estimation for a cost efficient in-situ remediation of an aquifer contaminated with DNAPL Author(s) + organisation, company.greiner@iws.uni-stuttgart.de Phone +49 - 711 / 685 4602 Fax +49 - 711 / 685 7020 Topics: Alcohol flushing, in-situ remediation

Cirpka, Olaf Arie

337

PROCESO DE CAPACITACIÓN CON ENFOQUE DE ORGANIZACIÓN QUE APRENDE. UN ANÁLISIS DE SU SITUACIÓN ACTUAL EN ACTORES VINCULADOS AL TURISMO EN VIÑALES, CUBA  

Microsoft Academic Search

Desde hace más de dos décadas se viene planteando en disímiles escenarios que el desarrollo sostenible es la única alternativa presente y viable a la salvaguardia de la humanidad, lo cual constituye una cuestión de ética con la naturaleza y el ser humano, donde la responsabilidad y la conciencia social juegan un rol fundamental para contribuir a una gestión racional

Tania Vargas Fernández; Deysi Alfonso Porraspita; Meibys Díaz Labrador

2010-01-01

338

EXCELLENTIA CoLumbIA ENgINEErINg 61 any sports-related injuries involve soft tissues such as ligaments, which con-  

E-print Network

HEALTH EXCELLENTIA CoLumbIA ENgINEErINg 61 HEALTH M any sports-related injuries involve soft tissues such as ligaments, which con- nect bone with bone, and tendons, which join muscle to bone. Each on engineering the interface that connects soft tissue to bone. While tissue engineering has traditionally

Hone, James

339

2.4ContaminantTransportandManagement(CONTAM) The ConTAM research area focuses on developing technology to observe and manage mass and energy  

E-print Network

2.4ContaminantTransportandManagement(CONTAM) The ConTAM research area focuses on developing:on domain, and high resolu:on river data are being modeled in terms of primaryproduc measurements, remote sensingobserva:ons,physically based process models, etc.) and has been

California at Los Angeles, University of

340

Pure Appl. Chem., Vol. 82, No. 12, pp. 22472279, 2010. doi:10.1351/PAC-CON-10-09-04  

E-print Network

2247 Pure Appl. Chem., Vol. 82, No. 12, pp. 2247­2279, 2010. doi:10.1351/PAC-CON-10-09-04 © 2010 to the trans form once the UV source is removed. Although this thermal re-isomerization is slow, *Pure Appl

Martin, Jan M.L.

341

In many real-world situations, short-term rewards con-flict with long-term benefits. Consider the case of global  

E-print Network

the case of global warming, for which a group's difficulty in changing its behavior reflects a considerableIn many real-world situations, short-term rewards con- flict with long-term benefits. Consider in real-world situations involves not only weighing the costs and benefits of par- ticular actions

Love, Bradley C.

342

Geometria III, Problemas 5 Primer semestre, 2010/11. (R) es el plano proyectivo con la estructura diferencial estudiada en clase.  

E-print Network

estructura diferencial estudiada en clase. Si : (-/2, /2) P2 (R) es la curva cuyo punto (t) corresponde conjunto de todas las circunferencias del plano R2 . Demuestre que M admite una estructura de variedad de dimensi´on 3 con un atlas de una sola carta. Para la estructura diferencial encontrada, conteste a las

Guijarro, Luis

343

Geometria III, Problemas 5 Segundo semestre, 2009/10. (R) es el plano proyectivo con la estructura diferencial estudiada en clase.  

E-print Network

estructura diferencial estudiada en clase. Si : (-/2, /2) P2 (R) es la curva cuyo punto (t) corresponde conjunto de todas las circunferencias del plano R2 . Demuestre que M admite una estructura de variedad de dimensi´on 3 con un atlas de una sola carta. Para la estructura diferencial encontrada, conteste a las

Guijarro, Luis

344

El papado de Pablo IV (1555-1559), las relaciones con Venecia y Espaa y el cambio de orientacin poltico-religiosa de las lites eclesisticas italianas  

E-print Network

el núcleo del entourage del joven emperador (tales el gran canciller Mercurino Gattinara y el 5190, Lyon / Università di Milano Presentamos en este trabajo las principales conclusiones de nuestra tesis, "Il papato di Paolo IV nella crisi politico-religiosa del Cinquecento: le relazioni con la

Paris-Sud XI, Université de

345

Getting the Most from Your CD-ROM Dollars: The CD-ROM Bundle [and] The Pros and Cons of CD-ROM Bundling.  

ERIC Educational Resources Information Center

Discusses and reviews CD-ROM bundles--i.e., hardware, software and CD-ROM kits--including their features, specifications, drawbacks, and prices. Recommends buying through mail order for the best selection and price. The pros and cons of bundling as a marketing strategy are discussed and a list of vendors is provided. (EA)

Sarjeant, Eric W.; O'Connor, Mary Ann

1992-01-01

346

arXiv:submit/0083985[cond-mat.supr-con]29Jul2010 Metastability in a nano-bridge based hysteretic DC-SQUID embedded in  

E-print Network

arXiv:submit/0083985[cond-mat.supr-con]29Jul2010 Metastability in a nano-bridge based hysteretic DC-SQUID study the metastable response of a highly hysteretic DC-SQUID made of a Niobium loop interrupted by two nano-bridges. We excite the SQUID with an alternating current and with direct magnetic flux, and find

Buks, Eyal

347

Carlo Beenakker, Leiden University Graphene is a mono-atomic layer of carbon atoms, arranged in a honeycomb la ice. Con-  

E-print Network

, arranged in a honeycomb la ice. Con- duction electrons move in the x- plane of the layer, with velocity", and is a unique feature of graphene. We introduce a potential barrier U (x) (see gure). An electron moves = 106 m/s that is inde- pendent of their energy E. [1] Explain why the conduction electrons in graphene

Galis, Frietson

348

Uso de las máquinas de pivote central en el riego con aguas residuales Use of the center pivot machine in the irrigation with wastewaters  

Microsoft Academic Search

RESUMEN. Es una realidad mundial, actual, que el agua potable es cada día más escasa para todos los usos en las actividades diarias de la población. La agricultura es el mayor consumidor de agua, con marcado incremento en los países en vías de desarrollo donde a su vez se requiere de una mayor producción de alimentos. En áreas urbanas y

Candelario Alemán G

2006-01-01

349

Synthesis, growth, structural, spectral, thermal, chemical etching, linear and nonlinear optical and mechanical studies of an organic single crystal 4-chloro 4-nitrostilbene (CONS): a potential NLO material.  

PubMed

4-Chloro 4-nitrostilbene (CONS) a new organic nonlinear optical material has been synthesized. Employing slow evaporation method, good optical quality single crystals (dimensions up to 6×2×3 mm(3)) have been grown using ethyl methyl ketone (EMK) as a solvent. The grown crystals have been subjected to various characterizations such as single crystal X-ray diffraction, powder XRD, Fourier Transform Infrared spectroscopy (FTIR), proton NMR, solid UV absorption, SHG studies. Single crystal X-ray diffraction reveals that the crystal system belongs to monoclinic with noncentrosymmetric space group P21. The UV-Vis absorption spectrum has been recorded and found that the cut off wavelength is 380 nm. Functional groups and the structure of the title compound have been confirmed by FTIR and (1)H NMR spectroscopic analyses respectively. Molecular mass of the CONS confirmed by the high resolution mass spectral analysis .The thermal behavior of the grown crystal has been studied by TG/DTA analysis and it shows the melting point is at 188.66 °C. Dislocations and growth pattern present in the grown crystal revealed by the etching study. The mechanical strength of the CONS crystal has been studied by Vicker's hardness measurement. The SHG efficiency of the grown crystal has been determined by Kurtz and Perry powder test which revealed that the CONS crystal (327 mV) has 15 times greater efficiency than that of KDP (21.7 mV). PMID:23624038

Dinakaran, Paul M; Kalainathan, S

2013-07-01

350

Departamento de Disciplinas Econmicas y Financieras El Departamento de Disciplinas Econmicas y Financieras, con sede en la Facultad de Derecho de la Universidad  

E-print Network

Financieras, con sede en la Facultad de Derecho de la Universidad de Alicante, est� compuesto por el �rea de conocimiento de Derecho Financiero y Tributario que centra su actividad en las facultades de Derecho, Ciencias titulaciones: Estudios de 1er y 2� Ciclo (a extinguir) Licenciatura en Derecho. Licenciatura Derecho-ADE (DADE

Escolano, Francisco

351

AVISO EN CONTRA DE ACTOS DISCRIMINATORIOS De conformidad con la Ley de Derechos Humanos del Distrito de Columbia (D.C.) de 1977, segn enmendada,  

E-print Network

AVISO EN CONTRA DE ACTOS DISCRIMINATORIOS De conformidad con la Ley de Derechos Humanos del a medidas disciplinarias. La Ley de Derechos Humanos del Distrito de Columbia (D.C.), Sección 2-1402.31(a discriminar: "Negarle a una persona, de forma directa o indirecta, el derecho a disfrutar a plenitud y

Weaver, Harold A. "Hal"

352

Analysis of cancer risk and BRCA1 and BRCA2 mutation prevalence in the kConFab familial breast cancer resource  

PubMed Central

Introduction The Kathleen Cuningham Foundation Consortium for Research into Familial Breast Cancer (kConFab) is a multidisciplinary, collaborative framework for the investigation of familial breast cancer. Based in Australia, the primary aim of kConFab is to facilitate high-quality research by amassing a large and comprehensive resource of epidemiological and clinical data with biospecimens from individuals at high risk of breast and/or ovarian cancer, and from their close relatives. Methods Epidemiological, family history and lifestyle data, as well as biospecimens, are collected from multiple-case breast cancer families ascertained through family cancer clinics in Australia and New Zealand. We used the Tyrer-Cuzick algorithms to assess the prospective risk of breast cancer in women in the kConFab cohort who were unaffected with breast cancer at the time of enrolment in the study. Results Of kConFab's first 822 families, 518 families had multiple cases of female breast cancer alone, 239 had cases of female breast and ovarian cancer, 37 had cases of female and male breast cancer, and 14 had both ovarian cancer as well as male and female breast cancer. Data are currently held for 11,422 people and germline DNAs for 7,389. Among the 812 families with at least one germline sample collected, the mean number of germline DNA samples collected per family is nine. Of the 747 families that have undergone some form of mutation screening, 229 (31%) carry a pathogenic or splice-site mutation in BRCA1 or BRCA2. Germline DNAs and data are stored from 773 proven carriers of BRCA1 or BRCA1 mutations. kConFab's fresh tissue bank includes 253 specimens of breast or ovarian tissue – both normal and malignant – including 126 from carriers of BRCA1 or BRCA2 mutations. Conclusion These kConFab resources are available to researchers anywhere in the world, who may apply to kConFab for biospecimens and data for use in ethically approved, peer-reviewed projects. A high calculated risk from the Tyrer-Cuzick algorithms correlated closely with the subsequent occurrence of breast cancer in BRCA1 and BRCA2 mutation positive families, but this was less evident in families in which no pathogenic BRCA1 or BRCA2 mutation has been detected. PMID:16507150

Mann, Graham J; Thorne, Heather; Balleine, Rosemary L; Butow, Phyllis N; Clarke, Christine L; Edkins, Edward; Evans, Gerda M; Fereday, Sián; Haan, Eric; Gattas, Michael; Giles, Graham G; Goldblatt, Jack; Hopper, John L; Kirk, Judy; Leary, Jennifer A; Lindeman, Geoffrey; Niedermayr, Eveline; Phillips, Kelly-Anne; Picken, Sandra; Pupo, Gulietta M; Saunders, Christobel; Scott, Clare L; Spurdle, Amanda B; Suthers, Graeme; Tucker, Kathy; Chenevix-Trench, Georgia

2006-01-01

353

hI-con1, a factor VII-IgGFc chimeric protein targeting tissue factor for immunotherapy of uterine serous papillary carcinoma  

PubMed Central

Background: Uterine serous papillary adenocarcinoma (USPC) is a highly aggressive variant of endometrial cancer. Human immuno-conjugate molecule (hI-con1) is an antibody-like molecule targeted against tissue factor (TF), composed of two human Factor VII (fVII) as the targeting domain, fused to human immunoglobulin (Ig) G1 Fc as an effector domain. We evaluated hI-con1 potential activity against primary chemotherapy-resistant USPC cell lines expressing different levels of TF. Methods: A total of 16 formalin-fixed, paraffin-embedded USPC samples were evaluated by immunohistochemistry (IHC) for TF expression. Six primary USPC cell lines, half of which overexpress the epidermal growth factor type II (HER2/neu) receptor at 3+ levels, were assessed by flow cytometry and real-time PCR for TF expression. Sensitivity to hI-con1-dependent cell-mediated cytotoxicity (IDCC) was evaluated in 5-hour-chromium release assays. Finally, to investigate the effect of interleukin-2 (IL-2) on IDCC, 5-h 51Cr assays were also conducted in the presence of low doses of IL-2 (i.e., 50–100?IU?ml?1). Results: Cytoplasmic and/or membrane TF expression was observed in all 16 (100%) USPC samples tested by IHC, but not in normal endometrium. High expression of TF was found in 50% (three out of six) of the USPC cell lines tested by real-time PCR and flow cytometry when compared with normal endometrial cells (NECs; P<0.001). Uterine serous papillary adenocarcinoma cell lines overexpressing TF, regardless of their high or low HER2/neu expression, were highly sensitive to IDCC (mean killing±s.d., 65.6±3.7%, range 57.5–77.0%, P<0.001), although negligible cytotoxicity against USPC was seen in the absence of hI-con1 or in the presence of Rituximab control antibody. The addition of low doses of IL-2 further increased the cytotoxic effect induced by hI-con1 against chemotherapy-resistant USPC. Conclusion: hI-con1 induces strong cytotoxicity against primary chemotherapy-resistant USPC cell lines overexpressing TF. The hI-con1 may represent a novel therapeutic agent for the treatment of patients harbouring advanced, recurrent and/or metastatic USPC refractory to standard treatment modalities. PMID:20700124

Cocco, E; Hu, Z; Richter, C E; Bellone, S; Casagrande, F; Bellone, M; Todeschini, P; Krikun, G; Silasi, D-A; Azodi, M; Schwartz, P E; Rutherford, T J; Buza, N; Pecorelli, S; Lockwood, C J; Santin, A D

2010-01-01

354

The Temporal and Spatial Quantification of Holocene Sediment Dynamics for Reconstructing Soil Erosion: Pros, Cons and Challenges  

NASA Astrophysics Data System (ADS)

Since the early beginning of farming, humans have a strong impact on the landscape, on its land cover and therefore on the sediment dynamics. It is assumed that an increase of farming activity is documented by truncated soil profiles due to soil erosion on the slopes and deposition of the eroded material as colluvium and alluvium at foot-slope positions and in floodplains of rivers. In this respect, these sediment archives play a major role in reconstructing human induced soil erosion and in establishing catchment wide quantitative sediment budgets. However, the response of sediment archives to an external impact like the human impact on the landscape or climate events is not homogeneous within a catchment, but might be variable in time and space. This is well known and considered in the geomorphological concept of sediment cascade systems and therefore needs to be included as a basic idea in studies on past soil erosion and its driving factors, using sediment archives. However, the identification of representative sediment archives within a catchment and especially their temporal quantification is challenging. In this presentation I will discuss the importance of sediment archives for reconstruction past soil erosion, the significance of these archives for identifying possible causes of sediment redistribution and the pros, cons and challenges, which are involved.

Fuchs, Markus

2014-05-01

355

Virgin Caenorhabditis remanei females are attracted to a coital pheromone released by con-specific copulating males  

PubMed Central

The gonochoristic soil nematode Caenorhabditis remanei strictly requires copulation for species propagation. Males of this species are sexually promiscuous with females of other species; therefore, we asked in this study whether virgin C. remanei females display evidence of mate choice. We digitally recorded and measured the locomotor behaviors of one or more virgin females in the presence of a single male on a 5 mm diameter mating lawn. We observed that initially only the male modifies his locomotor trajectory to another animal on the mating lawn; the virgin females showed no locomotor bias toward the mate-searching male. However, once a male started to copulate, females in the vicinity altered their movement trajectories toward the copulating couple. Newly inseminated females are refractive to the coital signal, but partially regain their attraction to copulating males after 24 h. We found only copulating males with an intact gonad can attract females, and that the coital signal can be broadcasted at least 1.5 mm through the air. Unlike males, which are also attracted to hetero-specific females, virgin C. remanei females will only crawl toward a copulating con-specific male. We suggest that Caenorhabditis females use the coital signal as a pheromone to identify a vigorous male of their own species. PMID:24058874

Markert, Mathew; Garcia, Luis Rene

2013-01-01

356

Evaluation of GO_CONS_GCF_2_TIM and GOCO01S Geopotential Models in Venezuela and Caribbean Region  

NASA Astrophysics Data System (ADS)

This paper shows two maps of the magnitude of the surface gravity vector (MSGV) of Venezuela and Caribbean region at 1:500.000 scale in the geographic window between the 0-20 north latitude and 74-58 western longitude (Fig. 1 and Fig. 2), that were generated from GOCE gravity gradients data provided by the European Space Agency (ESA). The maps that are showed come from the combined global gravity field model GOCO01s [GOCO Consortium., 2010] and from the satellite-only global gravity field model GO_CONS_GCF_2_TIM [Pail et al., 2010], both of 224 degree. The DEMs used for the evaluation of the MSGV are: Etopo2v2 [NGDC., 2006] and Etopo1 [Amante and Eakins, 2009] respectively. The data processing was done using: Shm2func [ICGEM., 2007]; Goce User Toolbox [ESA., 2009]; Gravsoft package [Tscherning et al., 1992] and Oasis Montaj (Geosoft). This research shows a review of observed gravity in the main geological provinces of the Venezuela and Caribbean region geography, revealing gravitational features important of the geological structures that are in Venezuelan and Caribbean subsurface.

Orihuela, N. D.; Garcia, A. D.; Tabare, T.; Scientific Team Of Venezuelan; Caribbean Crustal Study From Satellital Data

2010-12-01

357

[Sedation concepts with volatile anaesthetics in intensive care: practical use and current experiences with the AnaConDa system].  

PubMed

The use of volatile anaesthetics in intensive care medicine has so far been limited by the lack of equipment suitable for daily routine use and the need for an anaesthetic machine. The new Anaesthetic Conserving Device (AnaConDa) enables the routine use of volatile anaesthetics for long-term sedation via intensive care ventilators. The Anaesthetic Conserving Device replaces the common heat and moisture exchanger in the ventilation circuit. The volatile anaesthetic is continuously applied in liquid status via a syringe pump to a form of mini-vaporiser where the anaesthetic agent is vaporised. The expired anaesthetic gas is stored in the carbon filter and approximately 90% of the gas is resupplied into the breathing cycle. The current experiences suggest that volatile anaesthetics present an alternative for long-term sedation in intensive care units, providing optimised pathways, from a medical as well as from an economical point of view. It must, however, be emphasized that the use of volatile anaesthetics for longer periods of time is an off-label use and should only undertaken by medical professionals at their own risk. PMID:18839123

Kompardt, J; Schärff, K; Kubosch, K; Pohl, C; Bomplitz, M; Soukup, J

2008-12-01

358

Document-level classification of CT pulmonary angiography reports based on an extension of the ConText algorithm.  

PubMed

In this paper we describe an application called peFinder for document-level classification of CT pulmonary angiography reports. peFinder is based on a generalized version of the ConText algorithm, a simple text processing algorithm for identifying features in clinical report documents. peFinder was used to answer questions about the disease state (pulmonary emboli present or absent), the certainty state of the diagnosis (uncertainty present or absent), the temporal state of an identified pulmonary embolus (acute or chronic), and the technical quality state of the exam (diagnostic or not diagnostic). Gold standard answers for each question were determined from the consensus classifications of three human annotators. peFinder results were compared to naive Bayes' classifiers using unigrams and bigrams. The sensitivities (and positive predictive values) for peFinder were 0.98(0.83), 0.86(0.96), 0.94(0.93), and 0.60(0.90) for disease state, quality state, certainty state, and temporal state respectively, compared to 0.68(0.77), 0.67(0.87), 0.62(0.82), and 0.04(0.25) for the naive Bayes' classifier using unigrams, and 0.75(0.79), 0.52(0.69), 0.59(0.84), and 0.04(0.25) for the naive Bayes' classifier using bigrams. PMID:21459155

Chapman, Brian E; Lee, Sean; Kang, Hyunseok Peter; Chapman, Wendy W

2011-10-01

359

Tissue factor expression in ovarian cancer: implications for immunotherapy with hI-con1, a factor VII-IgGF(c) chimeric protein targeting tissue factor.  

PubMed

We evaluated the expression of tissue factor (TF) in ovarian cancer (EOC) and the potential of hI-con1, an antibody-like molecule targeting TF, as a novel form of therapy against chemotherapy-resistant ovarian disease. We studied the expression of TF in 88 EOC by immunohistochemistry (IHC) and real-time-PCR (qRT-PCR) and the levels of membrane-bound-complement-regulatory-proteins CD46, CD55 and CD59 in primary EOC cell lines by flow-cytometry. Sensitivity to hI-con1-dependent-cell-mediated-cytotoxicity (IDCC), complement-dependent-cell-cytotoxicity and inhibition of IDCC by ?-immunoglobulin were evaluated in 5-h (51)chromium-release-assays. Cytoplasmic and/or membrane TF expression was observed in 24 out of 25 (96%) of the EOC samples tested by IHC, but not in normal ovarian-tissue. EOC with clear cell histology significantly overexpress TF when compared to serous, endometrioid, or undifferentiated tumors by qRT-PCR. With a single exception, all primary EOC that overexpressed TF demonstrated high levels of CD46, CD55 and CD59 and regardless of their histology or resistance to chemotherapy, were highly sensitive to IDCC. The effect of complement and physiologic doses of ?-immunoglobulin on IDCC in ovarian cancer cell lines overexpressing TF was tumor specific and related to the overexpression of CD59 on tumor cells. Small-interfering-RNA-mediated knockdown of CD59 expression in ovarian tumors significantly increased hI-con1-mediated cytotoxic activity in vitro. Finally, low doses of interleukin-2 further increased the cytotoxic effect induced by hI-con1 (P < 0.01). hI-con1 molecule induces strong cytotoxicity against primary chemotherapy-resistant ovarian cancer cell lines overexpressing TF and may represent a novel therapeutic agent for the treatment of ovarian tumors refractory to standard treatment modalities. PMID:21725665

Cocco, Emiliano; Varughese, Joyce; Buza, Natalia; Bellone, Stefania; Lin, Ken-Yu; Bellone, Marta; Todeschini, Paola; Silasi, Dan-Arin; Azodi, Masoud; Schwartz, Peter E; Rutherford, Thomas J; Carrara, Luisa; Tassi, Renata; Pecorelli, Sergio; Lockwood, Charles J; Santin, Alessandro D

2011-10-01

360

Tissue factor expression in ovarian cancer: implications for immunotherapy with hI-con1, a factor VII-IgGFc chimeric protein targeting tissue factor  

PubMed Central

We evaluated the expression of tissue factor (TF) in ovarian cancer (EOC) and the potential of hI-con1, an antibody-like molecule targeting TF, as a novel form of therapy against chemotherapy-resistant ovarian disease. We studied the expression of TF in 88 EOC by immunohistochemistry (IHC) and real-time-PCR (qRT-PCR) and the levels of membrane-bound-complement-regulatory-proteins CD46, CD55 and CD59 in primary EOC cell lines by flow-cytometry. Sensitivity to hI-con1-dependent-cell-mediated-cytotoxicity (IDCC), complement-dependent-cell-cytotoxicity and inhibition of IDCC by ?-immunoglobulin were evaluated in 5-h 51chromium-release-assays. Cytoplasmic and/or membrane TF expression was observed in 24 out of 25 (96%) of the EOC samples tested by IHC, but not in normal ovarian-tissue. EOC with clear cell histology significantly overexpress TF when compared to serous, endometrioid, or undifferentiated tumors by qRT-PCR. With a single exception, all primary EOC that overexpressed TF demonstrated high levels of CD46, CD55 and CD59 and regardless of their histology or resistance to chemotherapy, were highly sensitive to IDCC. The effect of complement and physiologic doses of ?-immunoglobulin on IDCC in ovarian cancer cell lines overexpressing TF was tumor specific and related to the overexpression of CD59 on tumor cells. Small-interfering-RNA-mediated knockdown of CD59 expression in ovarian tumors significantly increased hI-con1-mediated cytotoxic activity in vitro. Finally, low doses of interleukin-2 further increased the cytotoxic effect induced by hI-con1 (P < 0.01). hI-con1 molecule induces strong cytotoxicity against primary chemotherapy-resistant ovarian cancer cell lines overexpressing TF and may represent a novel therapeutic agent for the treatment of ovarian tumors refractory to standard treatment modalities. PMID:21725665

Cocco, Emiliano; Varughese, Joyce; Buza, Natalia; Bellone, Stefania; Lin, Ken-Yu; Bellone, Marta; Todeschini, Paola; Silasi, Dan-Arin; Azodi, Masoud; Schwartz, Peter E.; Rutherford, Thomas J.; Carrara, Luisa; Tassi, Renata; Pecorelli, Sergio; Lockwood, Charles J.

2013-01-01

361

Impact evaluation of an adjustable speed drive installed at Ball-InCon Glass Packaging Corporation under the Energy $avings Plan  

SciTech Connect

This impact evaluation of an adjustable speed drive that was recently installed at Ball-InCon Glass Packaging Corporation (Ball-InCon) was conducted for the Bonneville Power Administration (Bonneville) as part of an evaluation of its Energy $avings Plan (E$P) Program. The Program makes acquisition payments to firms that install energy conservation projects in their industrial processes. The objective of this impact evaluation was to assess how much electrical energy is being saved at Ball-InCon as a result of the E$P and to determine how much the savings cost Bonneville and the region. The impact of the project was evaluated with a combination of engineering analysis, financial analysis, interviews, and submittal reviews (Ball-InCon`s Abstract, Proposal, and Completion Report). The project consists of switching from inlet guide vanes to adjustable frequency drives for 10 motors that provide cooling air to glass container molds. Based on this impact evaluation, energy savings from this project are expected to be 1,711,500 kWh/yr, or about 0.20 average megawatts. On a per-ton basis, this project will save approximately 7.8 kWh/ton of glass produced. The project cost $182,834 to install, and Ball-InCon received payment of $95,581 from Bonneville for the acquisition of energy savings. The real levelized cost of these energy savings to Bonneville is 5.2 mills/kWh over the projects`s assumed 15-year life, and the levelized cost to the region is 10.7 mills/kWh in 1992 dollars, not including transmission and distribution effects. This project would not have been implemented without the acquisition payment from Bonneville, so all of the energy savings can be attributed to the E$P.

Spanner, G.E.; Sullivan, G.P.

1993-05-01

362

Supine percutaneous nephrolithotomy: con.  

PubMed

Advocates of supine percutaneous nephrolithotomy (PCNL) consider several theoretical advantages for this procedure. Despite the potential advantages of the supine PCNL, the majority of urologists have remained reluctant to perform this technique. This reluctance may be related to successful outcomes of prone PCNL and technical difficulties associated with supine PCNL. Feasibility of supine PCNL has been shown in different series and the current evidence, although limited and not fully organized, implies the application of this technique for patients with simple stones who are at high anesthesiological risk. However, there is no convincing evidence to support performing supine PCNL in morbidly obese patients and those with complex and multiple stones. Further randomized clinical trials of large sample size and high methodological quality are required to recommend extensive application of supine PCNL as an alternative to prone PCNL. PMID:22090043

Lashay, Alireza; Amini, Erfan; Ahanian, Ali; Ozhand, Ardalan; Nikkar, Mohammad Masoud; Sharifi, Seyed Hossein Hosseini

2011-01-01

363

Neo-Conned University  

ERIC Educational Resources Information Center

Censorship, says Australian political theorist John Keane (1991), can "echo within us, take up residence within ourselves, spying on us, a private amanuensis who reminds us never to go too far... It makes us zip our lips, tremble and think twice" (p. 39). It can also make us sick. The author states that this is her argument here: that,…

Jones, Andee

2014-01-01

364

Adelante con animo  

E-print Network

A proposition of this thesis is that architecture is capable of conveying a sense of animation, movement and energy. These are elusive properties. Their perception perhaps emerges from the building's form or articulation ...

McCullough Maker, Kathleen Grace

1992-01-01

365

Circumcision: Pros and cons  

PubMed Central

Circumcision is possibly the most frequently performed elective surgical procedure in men. It can simply be described as the excision of the preputium. There have been several studies about the association between circumcision and urinary tract infections (UTI). Many studies have demonstrated that the frequency of UTI increase in uncircumcised males, especially in the first year of life. This review discusses the embryology of the preputium, epidemiology, indications, complications and benefits of circumcision, as well as operation and anesthesiology techniques. It especially examines the association between UTI and circumcision and the importance of circumcision in congenital urinary system anomalies. In addition, this review examines the associations between circumcision and sexually transmitted diseases, including HIV, and the protective role of circumcision on penile cancer. PMID:20535279

Burgu, Berk; Aydogdu, Ozgu; Tangal, Semih; Soygur, Tarkan

2010-01-01

366

Divestment: Pro and Con.  

ERIC Educational Resources Information Center

Both sides of the divestment controversy are presented by two trustees from Carleton College and actions that Carleton finally took are explained. Morgan calls for divestment, while Trow sees colleges as committed to the pursuit of truth, not the possessor. (MLW)

Trow, Martin B.; Morgan, Thomas

1987-01-01

367

The Classics, Con Brio  

ERIC Educational Resources Information Center

Sponsored by a consortium of 30 American universities, Rome's Intercollegiate Center for Classical Studies offers a year of study to American undergraduate classics majors. Instructors are also American and normally stay only a year; teaching assistants are always ex-students of the center. Extensive field trips are an important part of the…

Hansen, James

1978-01-01

368

urban ConAgraculture  

Microsoft Academic Search

Current pressures in today’s world caused me to investigate strategies of change in the organization of society to promote a more effi cient existence. Globalization, a movement characterized by the dissemination of economies, ethnicities, media, ideas, technologies, and production; has become today’s reality. The shift from imperialism to globalism has caused a decline in the power and importance of nation

Dale J Luebbert

2009-01-01

369

Entrevista con José Triana  

E-print Network

una historia banal. El verdadero furor de esos muchachos no es el vaso que se rompe ni el grito por que se apague el radio. Lo que ellos quieren es que el mundo esté mejor ordenado y que el amor ocupe un lugar justo entre ellos, y no ese desorden.... La obra también es un canto al amor. Por un lado está el juego político, el juego heroico, la guerra, el furor de la guerra, etc., y están esos hombres debatiéndose, hablando de un mismo amor, de un amor hacia lo invisible. Creo que la verdadera...

Vasserot, Christilla

1995-10-01

370

EthicsConRep  

Cancer.gov

The authors also gratefully acknowledge the copy editing assistance of Leslie Alter, MPH and Steve Brown. The Ethical Force Program’s initiative on patient-centered communication is funded in part by the American Medical Association Foundation, The California Endowment, the Commonwealth Fund and the Connecticut Health Foundation.

371

Riesgos y desafíos en la implementación de una indicación geográfica (IG) Las denominaciones de origen (DO) y las indicaciones geográficas (IG) como herramientas para el desarrollo territorial rural con identidad cultural (DTR-IC)  

Microsoft Academic Search

La presente comunicación es resultado de un Estudio Complementario que se está desarrollando en la ciudad de Colonia Caroya, provincia de Córdoba (Argentina) sobre Indicaciones Geográficas (IG) y Desarrollo Territorial Rural con Identidad Cultural (DTR-IC). El trabajo se inserta en el marco de dos proyectos, por un lado, el Proyecto Desarrollo Territorial Rural con Identidad Cultural (DTR-IC) liderado por Claudia

Marcelo Champredonde; A. Benedetto

2010-01-01

372

Verde Sport S.p.A. con il patrocinio di Assicurazioni Generali e il sostegno di Telecom Italia, bandisce un concorso per il conferimento di 6 premi del valore di 1.000 euro ciascuno a favore di laureati in  

E-print Network

e sport (www.mastersbs.it); Impiantistica sportiva (www.mastersbs.it); Doping sportivo, sia comeBIBLIOTECA STEFANO BENETTON Verde Sport S.p.A. con il patrocinio di Assicurazioni Generali e il ciascuno a favore di laureati in Università italiane con tesi su temi riguardanti lo sport o la

Guidoni, Leonardo

373

EL FONDO DE EDUCACIÓN Y PROMOCIÓN EN COOPERATIVAS DE CRÉDITO: GESTIÓN CON O SIN UNA FUNDACIÓN \\/ THE EDUCATION, TRAININIG AND DEVELOPMENT FUND IN CREDIT COOPERATIVES: MANAGEMENT, THROUGH OR NOT, A FOUNDATION  

Microsoft Academic Search

Las Cooperativas de Crédito deben destinar un porcentaje de su excedente al Fondo de Educación y Promoción,, por un importe mínimo del 10% del mismo, incluso por la parte procedente de los resultados extracooperativos. Sin duda, es el sector cooperativo con mayores excedentes, y con mayor volumen de FEP a gestionar. Tanto la Ley 20\\/90 de régimen fiscal de las

Agustín ROMERO CIVERA

374

Accessory cell function in the Con A response: role of Ia-positive and Ia-negative accessory cells.  

PubMed

We have examined the role of Ia-positive and Ia-negative accessory cells (AC) and soluble factors in Con A-stimulated murine T cell activation. Supernatant fluids containing interleukin 1 (IL 1) derived from the P388D1 macrophage cell line and from a lipopolysaccharide (LPS)-stimulated macrophage hybridoma provided only partial reconstitution of the response of purified T cells (18 to 27%). The complete reconstitution obtained with gamma-irradiated spleen cells or LPS-activated B cells was inhibited by approximately 60 to 77% when anti-Ia antibody was included in the culture. Despite this apparent involvement of Ia+ spleen AC, Ia-negative L cell AC could also reconstitute the response of both Class I-restricted Lyt-2+ T cells and Class II-restricted L3T4+ T cells. When the Ia-negative AC were employed, the L3T4 antigen on L3T4+ T cells played a critical role because addition of anti-L3T4 antibody to the culture inhibited the response by 85 to 90%. In contrast, anti-L3T4 did not inhibit the response in the presence of spleen AC. These results suggest that the molecules involved in T cell-AC interactions may vary depending on the AC source. Moreover, at least one of the putative target ligands for L3T4 presumably is not Ia, because anti-L3T4 inhibited T cell stimulation when Ia-negative AC were used. PMID:3881521

Bekoff, M; Kakiuchi, T; Grey, H M

1985-03-01

375

An inevitable wave of prescription drug monitoring programs in the context of prescription opioids: pros, cons and tensions  

PubMed Central

Background In an effort to control non-medical use and/or medical abuse of prescription drugs, particularly prescription opioids, electronic prescription drug monitoring programs (PDMP) have been introduced in North-American countries, Australia and some parts of Europe. Paradoxically, there are simultaneous pressures to increase opioid prescribing for the benefit of individual patients and to reduce it for the sake of public health, and this pressure warrants a delicate balance of appropriate therapeutic uses of these drugs with the risk of developing dependence. This article discusses pros and cons of PDMP in reducing diversion of prescription opioids, without hampering access to those medications for those with genuine needs, and highlights tensions around PDMP implementation. Discussion PDMPs may help alleviate diversion, over-prescription and fraudulent prescribing/dispensing; prompt drug treatment referrals; avoid awkward drug urine test; and inform spatial changes in prescribing practices and help designing tailored interventions. Fear of legal retribution, privacy and data security, potential confusion about addiction and pseudo-addiction, and potential undue pressure of detecting misuse/diversion - are the major problems. There are tensions about unintended consequence of excessive regulatory enforcements, corresponding collateral damages particularly about inadequate prescribing for patients with genuine needs, and mandatory consultation requirements of PDMP. Summary In this era of information technology PDMP is likely to flourish and remain with us for a long time. A clear standard of practice against which physicians’ care will be judged may expedite the utilisation of PDMP. In addition, adequate training on addiction and pain management along with public awareness, point-of-supply data entry from pharmacy, point-of-care real-time access to data, increasing access to addiction treatment and appropriate regulatory enforcement preferably through healthcare administration, together, may help remove barriers to PDMP use. PMID:25127880

2014-01-01

376

How many metal atoms are needed to dehydrogenate an ethylene molecule on metal clusters?: Correlation between reactivity and electronic structures of Fen+, Con+, and Nin+.  

PubMed

The absolute cross section for dehydrogenation of an ethylene molecule on Mn+ [Fen+ (n = 2-28), Con+ (n = 8-29), and Nin+ (n = 3-30)] was measured as a function of the cluster size n in a gas-beam geometry at a collision energy of 0.4 eV in the center-of-mass frame in an apparatus equipped with a tandem-type mass spectrometer. It is found that (1) the dehydrogenation cross section increases rapidly above a cluster size of approximately 18 on Fen+, approximately 13 and approximately 18 on Con+, and approximately 10 on Nin+ and (2) the rapid increase of the cross section for Mn+ occurs at a cluster size where the 3d electrons start to contribute to the highest occupied levels of Mn+. These findings lead us to conclude that the 3d electrons of Mn+ play a central role in the dehydrogenation on Mn+. PMID:17029478

Ichihashi, Masahiko; Hanmura, Tetsu; Kondow, Tamotsu

2006-10-01

377

Introduccion. Una matriz de m filas y n columnas con elementos en el cuerpo K es un rectangulo de elementos de K (es decir, numeros) del tipo  

E-print Network

Matrices Introducci´on. Una matriz de m filas y n columnas con elementos en el cuerpo K es un rect ... ... ... ... am1 am2 · · · amn . El elemento aij est´a en la fila i y la columna j. Notaremos por Mm�n(K) al + · · · + ainbnj. El elemento pij es el producto escalar de fila i de la matriz A y la columna j de la matriz B

Ramírez-Ros, Rafael

378

Disneyland Pars lanza su campaa de seleccin de personal en Alicante con la colaboracin de la Universidad de Alicante y el Ayuntamiento  

E-print Network

Disneyland París lanza su campaña de selección de personal en Alicante con la colaboración de la Universidad de Alicante y el Ayuntamiento Alicante, 2 de diciembre de 2011 Disneyland París en colaboración general. Los interesados que quieran trabajar en Disneyland Paris pueden inscribirse en el enlace www

Escolano, Francisco

379

Li storage and impedance spectroscopy studies on Co3O4, CoO, and CoN for Li-ion batteries.  

PubMed

The compounds, CoN, CoO, and Co3O4 were prepared in the form of nano-rod/particles and we investigated the Li-cycling properties, and their use as an anode material. The urea combustion method, nitridation, and carbothermal reduction methods were adopted to prepare Co3O4, CoN, and CoO, respectively. X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and the Brunauer-Emmett-Teller (BET) surface and density methods were used to characterise the materials. Cyclic voltammetry (CV) was performed and galvanostatic cycling tests were also conducted up to 60-70 cycles. The observed reversible capacity of all compounds is of the increasing order CoO, Co3O4, CoN and all compounds showed negligible capacity fading. CoO allows for Li2O and Co metal to form during the discharge cycle, allowing for a high theoretical capacity of 715 mA h g(-1). Co3O4 allows for 4 Li2O and 3Co to form, and has a theoretical capacity of 890 mAhg(-1). CoN is the best anode material of the three because the nitrogen allows for Li3N and Co to form, resulting in an even higher theoretical capacity of 1100 mAhg(-1) due to the Li3N and Co metal formation. Irrespective of morphology the charge profiles of all three compounds showed a major plateaux ~2.0 V vs. Li and potential values are almost unchanged irrespective of crystal structure. Electrochemical impedance spectroscopy (EIS) was performed to understand variation resistance and capacitance values. PMID:24325322

Reddy, M V; Prithvi, Gundlapalli; Loh, Kian Ping; Chowdari, B V R

2014-01-01

380

Canadian Shield brine from the Con Mine, Yellowknife, NT, Canada: Noble gas evidence for an evaporated Palaeozoic seawater origin mixed with glacial meltwater and Holocene recharge  

Microsoft Academic Search

Dissolved noble gas concentrations were measured in high salinity (270g\\/L) Ca(Na)-Cl groundwaters from the Con Mine, Yellowknife, Canada in an effort to discriminate between two possible origins, as either a brine generated by evaporative enrichment in a Paleozoic inland sea, or marine water concentrated by freezing during glacial times. Major ion and isotope geochemistry indicate that brines from the deepest

Shane Greene; Nick Battye; Ian Clark; Tom Kotzer; Dennis Bottomley

2008-01-01

381

An appraisal of a column-generation-based algorithm for a centralized train-con?ict resolution on metropolitan railway network  

Microsoft Academic Search

In practice, a train-con?ict resolution is decentralized around the dispatchers each of whom, with her rule-of-thumb to operational data, controls a few segments from a global railway network. Conceptually, a global sub-optimality or infeasibility of the decentralized system is resolved by a network controller on the top of the lower layers of the dispatchers and the drivers operating trains on

Sung-Pil Hong; Yun-Hong Min; Soon-Heum Hong

382

1.0 What is Statistics? 1.1 What is Mathematical Statistics? Random Data Basic Ideas in Statistics 1.2 Fundamental Con Mathematical Statistics  

E-print Network

§1.0 What is Statistics? §1.1 What is Mathematical Statistics? Random Data Basic Ideas in Statistics §1.2 Fundamental Con Mathematical Statistics Zhang, Lixin and Dai, Jialing Course Website: www.math.zju.edu.cn/zlx/teaching.htm #12;§1.0 What is Statistics? §1.1 What is Mathematical Statistics? Random Data Basic Ideas

Zhang, Li-Xin

383

Estructura de preferencias de los consumidores de vino y actitudes hacia los vinos con Denominacion de Origen. El caso de Castilla-La Mancha  

Microsoft Academic Search

El trabajo ha cubierto un doble objetivo, por un lado se ha determinado la importancia relativa de los atributos del vino que influyen en la conformaci�n de las preferencias de los consumidores de Castilla-La Mancha, y por otro se ha analizado la actitud de los consumidores hacia los vinos con certificaci�n de Denominaci�n de Origen (D.O.) m�s importantes de Castilla-La

Rodolfo Bernabeu; Miguel Olmeda; Monica Diaz

2005-01-01

384

Sviluppo di una micro CT con sorgente Quasi-Monocromatica Multi-Energy per lo studio in vivo della crescita e della metastasi tumorale  

Microsoft Academic Search

Un innovativo micro scanner CT per piccolo animali - basato su di una sorgente che genera una coppia di fasci X Quasi-Monocromatici paralleli con diverse energie selezionabili - è in corso di installazione e caratterizzazione al Dipartimento d i Fisica dell'Università di Bologna. Lo scopo della ricerca è quello di effettuare l'ima ging radiologico in vivo del tessuto tumorale e\\/o

G. Baldazzi; S. Masetti; P. L. Rossi; L. Roma; G. Nicoletti; P. L. Lollini

385

arXiv:0802.1511v1[cond-mat.supr-con]11Feb2008 Calculations for Magnetism in SQUIDs at Millikelvin Temperatures  

E-print Network

arXiv:0802.1511v1[cond-mat.supr-con]11Feb2008 Calculations for Magnetism in SQUIDs at Millikelvin SQUIDs. PACS numbers: 85.25.Dq, 03.65.Yz, 74.40.+k, 74.25.Ha Our recent measurements show an unexpected depen- dence of SQUID flux on bath temperature. The flux change scales as 1/T as temperature is lowered

Martinis, John M.

386

A methodological approach to comparing pros and cons of delocalizing villages: socio-economic and technical issues  

NASA Astrophysics Data System (ADS)

On 7th March 2005, prolonged rainfalls combined with snowfalls activated a wide complex rock slide-earth flow that partly destroyed the village of Cavallerizzo at Cerzeto (Calabria, Southern Italy). Superposed tectonic units made of Palaeozoic metamorphic rocks, overlain by Miocene-Quaternary clastic terrains, crop out in the study area. The main scarp of the landslide developed by a recent normal fault, striking N-S along the western margin of the Crati graben and extended ca. 25 km. In its lower part, the phenomenon evolved in two main earth-flow bodies that extended along minor drainages and then merged along the S. Nicola torrent. The sector affected by the instability actually belongs to a large-scale slope movement: the 2005 activation was in fact only a paroxysmal episode of a long history of slope deformations, noticed in the area since the XVIII century. Warning signs had been recorded for weeks before the collapse, and the threatened area had been put under monitoring by CNR-IRPI. When the movement accelerated, people had already been alerted and evacuated (329 out of 581 inhabitants of Cerzeto were sheltered in nearby villages), thus neither victims nor injured were recorded. As a whole, 124 buildings were severely damaged or destroyed, the main road was interrupted. Immediately after the 7th March 2005 event, the national Department for Civil Protection decided to evaluate the feasibility of delocalizing Cavallerizzo to another site. At this purpose, CNR-IRPI was asked to analysing the "geological suitability" of 3 different sites (Pianette, Amatine, and Colombra), pre-selected by the same Municipality of Cerzeto in accordance to the Civil Protection; the results of the study were completed in early Summer 2005. Between October 2007 and December 2011, a new settlement was realized by the Italian Government, and the houses were delivered to people once living at Cavallerizzo. In the last years, the socio-economic effects of the delocalization of Cavallerizzo have been analysed within the frame of a PhD thesis by one of the authors. The present study focuses on the Cavallerizzo case study to discuss a methodological approach useful to comparing pros and cons of delocalizing villages, aiming at properly considering socio-economic effects in addition to technical issues.

Guadagno, Eleonora; Iovine, Giulio G. R.; Petrucci, Olga; Forciniti, Pinuccia R.

2014-05-01

387

Emerging and Legacy Contaminants in The Foodweb in The Lower Columbia River: USGS ConHab Project  

NASA Astrophysics Data System (ADS)

An interdisciplinary study, USGS Columbia River Contaminants and Habitat Characterization (ConHab) project, investigates transport pathways, chemical fate, and effects of polybrominated diphenyl ethers (PBDEs) and other endocrine disrupting chemicals (EDCs) in aquatic media and the foodweb in the lower Columbia River, Oregon and Washington. Polar organic chemical integrative samplers (POCIS) and semipermeable membrane devices (SPMDs) were co-deployed at each of 10 sites in 2008 to provide a measure of the dissolved concentrations of select PBDEs, chlorinated pesticides, and other EDCs. PBDE-47 was the most prevalent of the PBDEs detected. Numerous organochlorine pesticides, both banned and current-use, including hexachlorobenzene, pentachloroanisole, dichlorodiphenyltrichloroethane (DDT) and its degradates, chlorpyrifos, endosulfan, and the endosulfan degradation products, were measured at each site. EDCs commonly detected included a series of polycyclic aromatic hydrocarbons (PAHs), fragrances (galaxolide), pesticides (chlorpyrifos and atrazine), plasticizers (phthalates), and flame retardants (phosphates). The downstream sites tended to have the highest concentrations of contaminants in the lower Columbia River. In 2009 and 2010 passive samplers were deployed and resident largescale suckers (Catostomus macrocheilus) and surface bed sediments were collected at three of the original sites representing a gradient of exposure based on 2008 results. Brain, fillet, liver, stomach, and gonad tissues were analyzed. Chemical concentrations were highest in livers, followed by brain, stomach, gonad, and, lastly, fillet. Concentrations of halogenated compounds in tissue samples ranged from <1 to 400 ng g-1 wet tissue. PBDEs, organochlorine pesticides, DDT and its degradates, and polychlorinated biphenyls (PCBs) were detected at all sites in nearly all organs tested. PBDE congeners most frequently detected and at the highest concentrations were PBDE-47 > PBDE-100 > PBDE-154 > PBDE-153. Concentrations in tissues and in sediments increased moving downstream from Skamania, WA to Columbia City, OR to Longview, WA. Preliminary biomarker results indicate that fish at the downstream sites experience greater stress relative to the upstream site based on gonad, kidney, spleen, and liver histopathology. These results support the hypothesis that contaminant concentrations in the environment correlate to bioaccumulation in the foodweb.

Nilsen, E. B.; Alvarez, D.; Counihan, T.; Elias, E.; Gelfenbaum, G. R.; Hardiman, J.; Jenkins, J.; Mesa, M.; Morace, J.; Patino, R.; Torres, L.; Waite, I.; Zaugg, S.

2012-12-01

388

Fuentes de variabilidad en el diagn?stico de gastritis atr?fica multifocal asociada con la infecci?n por Helicobacter pylori1  

PubMed Central

RESUMEN Introducción El mapeo de las diferentes regiones del estómago y el número de fragmentos de mucosa gástrica disponibles para evaluación histopatológica son fuentes importantes de variación en el momento de clasificar y hacer la gradación de la gastritis crónica. Objetivos Estimar la sensibilidad del número de fragmentos de mucosa gástrica necesarios para establecer los diagnósticos de gastritis atrófica con metaplasia intestinal (MI), displasia y estado de infección por Helicobacter pylori. Además evaluar la variabilidad intra-observador en la clasificación de estas lesiones precursoras del cáncer gástrico. Materiales y métodos En una cohorte de 6 años de seguimiento se evaluaron 1,958 procedimientos de endoscopia realizados por dos gastroenterólogos. En cada procedimiento y de cada participante se obtuvieron 5 biopsias de mucosa gástrica que representaban antro, incisura angularis y cuerpo. Un único patólogo hizo la interpretación histológica de las 5 biopsias y proporcionó un diagnóstico definitivo global que se utilizó como patrón de referencia. Cada fragmento de mucosa gástrica examinado condujo a un diagnóstico individual para cada biopsia que se comparó con el patrón de referencia. La variabilidad intra-observador se evaluó en 127 personas que corresponden a una muestra aleatoria de 20% del total de endoscopias hechas a los 72 meses de seguimiento. Resultados La sensibilidad del diagnóstico de MI y displasia gástrica aumentó de manera significativa con el número de fragmentos de mucosa gástrica evaluados El sitio anatómico de mayor sensibilidad para el diagnóstico de MI y displasia fue la incisura angularis. Para descubrir H. pylori se logró alta sensibilidad con el estudio de un solo fragmento de mucosa gástrica (95.9%) y fue independiente del sitio de obtención de la biopsia. El acuerdo intra-observador para el diagnóstico de gastritis crónica fue 86.1% con valor kappa de 0.79 IC 95% (0.76-0.85). Las biopsias fijadas en alcohol fueron inadecuadas para demostrar H. pylori e interpretar los cambios de displasia. Conclusión El número de fragmentos de mucosa gástrica evaluados, el método de fijación y la región del estómago donde se obtienen las biopsias son factores muy importantes para lograr una correcta clasificación de la gastritis crónica atrófica multifocal.

Bravo, Luis Eduardo; Bravo, Juan Carlos; Realpe, Jose Luis; Zarama, Guillermo; Piazuelo, MarIa Blanca; Correa, Pelayo

2014-01-01

389

Informe Anual a la Nación sobre el Estado del Cáncer, de 1975 a 2010, con una sección especial sobre la prevalencia de comorbilidad y su efecto en la supervivencia de personas con cáncer de pulmón, seno, próstata o colorrectal: preguntas y respuestas  

Cancer.gov

El Informe Anual a la Nación sobre el Estado del Cáncer (1975 a 2010), mostró un descenso más acelerado que en años anteriores de los índices de mortalidad por cáncer de pulmón. También contiene una sección especial que destaca los efectos significativos que tienen otras enfermedades en la supervivencia de pacientes con cáncer.

390

Treinta años de dramaturgia en el Perú (1950-1980)  

E-print Network

50 al 80 el Perú ha tenido seis gobiernos: tres de ellos militares. De estos, los de los generales Manuel A. Odría y Juan Velasco Alvarado son los que, con más notoriedad y trascendencia, han modificado la actitud de los peruanos y vida nacional y... la época de la Guerra de Corea. El General Odría, que gobernó con el lema, "Salud, Educación y Trabajo," se definió como "un gobierno de centro, mirando un poquito a la izquierda." El del general Juan Velasco Alvarado (1968-1975) fue una propuesta...

Dí az, Gré gor

1998-04-01

391

Sono convocati per il giorno Mercoled 17 Marzo 2010 alle ore 10.00 presso il salone sindacale i seguenti componenti R.S.U. per il Comitato di Coordinamento con compiti organizzativi interni alla  

E-print Network

seguenti componenti R.S.U. per il Comitato di Coordinamento con compiti organizzativi interni alla R.S.U PORTAVOCE RSU Marotta Stefano #12;I ,,-::Lo\\ 00 COMITATO DI COORDINAMENTO RSU I"marotta, stefano

Guidoni, Leonardo

392

Potential pros and cons of external healthcare performance evaluation systems: real-life perspectives on Iranian hospital evaluation and accreditation program  

PubMed Central

Background: Performance evaluation is essential to quality improvement in healthcare. The current study has identified the potential pros and cons of external healthcare evaluation programs, utilizing them subsequently to look into the merits of a similar case in a developing country. Methods: A mixed method study employing both qualitative and quantitative data collection and analysis techniques was adopted to achieve the study end. Subject Matter Experts (SMEs) and professionals were approached for two-stage process of data collection. Results: Potential advantages included greater attractiveness of high accreditation rank healthcare organizations to their customers/purchasers and boosted morale of their personnel. Downsides, as such, comprised the programs’ over-reliance on value judgment of surveyors, routinization and incurring undue cost on the organizations. In addition, the improved, standardized care processes as well as the judgmental nature of program survey were associated, as pros and cons, to the program investigated by the professionals. Conclusion: Besides rendering a tentative assessment of Iranian hospital evaluation program, the study provides those running external performance evaluations with a lens to scrutinize the virtues of their own evaluation systems through identifying the potential advantages and drawbacks of such programs. Moreover, the approach followed could be utilized for performance assessment of similar evaluation programs. PMID:25279381

Jaafaripooyan, Ebrahim

2014-01-01

393

Genes related to the very early stage of ConA-induced fulminant hepatitis: a gene-chip-based study in a mouse model  

PubMed Central

Background Due to the high morbidity and mortality of fulminant hepatitis, early diagnosis followed by early effective treatment is the key for prognosis improvement. So far, little is known about the gene expression changes in the early stage of this serious illness. Identification of the genes related to the very early stage of fulminant hepatitis development may provide precise clues for early diagnosis. Results Balb/C mice were used for ConA injection to induce fulminant hepatitis that was confirmed by pathological and biochemical examination. After a gene chip-based screening, the data of gene expression in the liver, was further dissected by ANOVA analysis, gene expression profiles, gene network construction and real-time RT-PCR. At the very early stage of ConA-triggered fulminant hepatitis, totally 1,473 genes with different expression variations were identified. Among these, 26 genes were finally selected for further investigation. The data from gene network analysis demonstrate that two genes, MPDZ and Acsl1, localized in the core of the network. Conclusions At the early stages of fulminant hepatitis, expression of twenty-six genes involved in protein transport, transcription regulation and cell metabolism altered significantly. These genes form a network and have shown strong correlation with fulminant hepatitis development. Our study provides several potential targets for the early diagnosis of fulminant hepatitis. PMID:20398290

2010-01-01

394

Modification of network structure induced by glass former composition and its correlation to the conductivity in lithium borophosphate glass for solid state electrolyte  

Microsoft Academic Search

The xLi2O–(1?x)(yB2O3–(1?y)P2O5) glasses system is one of the parent compositions for chemically and electrochemically stable solid state electrolyte applicable to thin film battery. The purpose of this study was to seek an optimum composition maximizing the ionic conductivity for the deposition of thin film electrolytes. xLi2O–(1?x)(yB2O3–(1?y)P2O5) glasses were prepared with wide range of composition, i.e. x=0.40–0.47 and B2O3\\/(B2O3+P2O5) ratio was

Sunhwa Lee; Jisook Kim; Dongwook Shin

2007-01-01

395

Study of lithium–zinc borophosphate glasses  

Microsoft Academic Search

Mixed lithium–zinc borophosphate glasses were prepared and studied in three compositional series xLi2O–(50?x)ZnO–50P2O5, xLi2O–(50?x)ZnO–10B2O3–40P2O5 and xLi2O–(50?x)ZnO–20B2O3–30P2O5 with x = 0, 10, 20, 30, 40 and 50 mol% Li2O. The obtained glasses were characterized by the measurements of the density (?), molar volume (V\\u000a M), glass transition temperature (T\\u000a g) and thermal expansion coefficient (?). For the investigation of structural changes 11B and 31P

L. Koudelka; J. Jirák; P. Mosner; L. Montagne; G. Palavit

2006-01-01

396

The effect of titanium and phosphorus on ferric/ferrous ratio in silicate melts: an experimental study  

NASA Astrophysics Data System (ADS)

The effect of TiO2 and P2O5 on the ferric/ferrous ratio in silicate melts was investigated in model silicate melts at air conditions in the temperature range 1,400-1,550 °C at 1-atm total pressure. The base composition of the anorthite-diopside eutectic composition was modified with 10 wt % Fe2O3 and variable amounts of TiO2 (up to 30 wt %) or P2O5 (up to 20 wt %). Some compositions also contained higher SiO2 concentrations to compare the role of SiO2, TiO2, and P2O5 on the Fe3+/Fe2+ ratio. The ferric/ferrous ratio in experimental glasses was analyzed using a wet chemical technique with colorimetric detection of ferrous iron. It is shown that at constant temperature, an increase in SiO2, TiO2, and P2O5 content results in a decrease in the ferric/ferrous ratio. The effects of TiO2 and SiO2 on the Fe3+/Fe2+ ratio was found to be almost identical. In contrast, adding P2O5 was found to decrease ferric/ferrous ratio much more effectively than adding silica. The results were compared with the predictions from the published empirical equations forecasting Fe3+/Fe2+ ratio. It was demonstrated that the effects of TiO2 are minor but that the effects of P2O5 should be included in models to better describe ferric/ferrous ratio in phosphorus-bearing silicate melts. Based on our observations, the determination of the prevailing fO2 in magmas from the Fe3+/Fe2+ ratio in natural glasses using empirical equations published so far is discussed critically.

Borisov, Alexander; Behrens, Harald; Holtz, Francois

2013-12-01

397

Immunosuppressive effect of concanavalin A. IV. The effect of Con A on the local graft versus host (GvH) reaction in the mouse popliteal lymph node.  

PubMed

In the applied parental F1 hybrid system, the GvH character of the regional lymph node reaction was checked against syngeneic and the absolute control systems. It was found that a cortical B-cell zone of the recipients did not participate in the acute phase of the GvH reaction. Cytologically, the GvH response consisted in a significant increase in large pyroninophilic cells, histologically - in a cellular proliferation and pyroninophilia, as well as in a marked angiogenesis beyond the cortical zone of the lymph node. The injection of Con A into the F1 hybrid mice, 24 hours before the administration of the parental cells, inhibited the earlier (presumably donor origin) cellular reaction and intensified the later (presumably host origin) response. PMID:7294974

Mioduszewska, O; Mo?cicka-Weso?owska, M; Skopi?ska-Rózewska, E; Wasik, M

1981-01-01

398

SUPPORT Tools for evidence-informed health Policymaking (STP) 16: Using research evidence in balancing the pros and cons of policies  

PubMed Central

This article is part of a series written for people responsible for making decisions about health policies and programmes and for those who support these decision makers. In this article, we address the use of evidence to inform judgements about the balance between the pros and cons of policy and programme options. We suggest five questions that can be considered when making these judgements. These are: 1. What are the options that are being compared? 2. What are the most important potential outcomes of the options being compared? 3. What is the best estimate of the impact of the options being compared for each important outcome? 4. How confident can policymakers and others be in the estimated impacts? 5. Is a formal economic model likely to facilitate decision making? PMID:20018106

2009-01-01

399

Broadening, shifting, and line asymmetries in the 2<--0 band of CO and CO-N2: Experimental results and theoretical calculations  

NASA Astrophysics Data System (ADS)

We have measured the room temperature, widths, pressure shifts, and line asymmetry coefficients for many transitions of the first overtone band of CO and CO perturbed by N2. The broadening coefficients were obtained with an accuracy of about 1%. The pure CO profiles have been fitted by a Voigt profile while the CO-N2 spectral profiles have been fitted with a Lorentz and an empirical line shape model (HCv) that blends together a hard collision model and a speed-dependent Lorentz profile. In addition to the Voigt, Lorentz, and HCv models, we have added a dispersion profile to account for weak line mixing. The line broadening and shift coefficients are compared to semiclassical calculations employing a variety of intermolecular interactions. The line asymmetry results are compared to line mixing calculations based on the energy corrected sudden (ECS) model. The results indicate that effects other than line mixing also contribute to the measured line asymmetry.

Predoi-Cross, Adriana; Bouanich, J. P.; Benner, D. Chris; May, A. D.; Drummond, J. R.

2000-07-01

400

Amino acid formation induced by high-power laser in CO 2/CO-N 2-H 2O gas mixtures  

NASA Astrophysics Data System (ADS)

In a mixture of molecular gases with compositions (CO 2-N 2-H 2O and CO-N 2-H 2O) and total pressure close to that of the Earth's early atmospheres, a centimeter-sized plasma was created by focusing a single 85-J, 450-ps near-infrared laser pulse in a center of 15-L gas cell. Chemical consequences of the laser-produced plasma generation in such a mixture were investigated using high-performance liquid chromatography with mass-spectrometric detection (HPLC/MS). Amino acids were identified in the reaction mixture containing CO 2 as well as in that one based on CO, both exposed to 10 laser shots.

Civiš, Svatopluk; Juha, Libor; Babánková, Dagmar; Cva?ka, Josef; Frank, Ota; Jehli?ka, Jan; Králiková, Božena; Krása, Josef; Kubát, Pavel; Muck, Alexandr; Pfeifer, Miroslav; Skála, Ji?í; Ullschmied, Ji?í

2004-03-01

401

Energy and Resource Saving of Steelmaking Process: Utilization of Innovative Multi-phase Flux During Dephosphorization Process  

NASA Astrophysics Data System (ADS)

An increase in the utilization efficiency of CaO, one of the major fluxing agents used in various steelmaking processes, is required to reduce the amount of discharged slag and energy consumption of the process. The authors have intensively focused on the development of innovative dephosphorization process by using so called "multi-phase flux" composed of solid and liquid phases. This article summarizes the research on the above topic done by the authors, in which the formation mechanisms of P2O5-containing phase during CaO or 2CaO·SiO2 dissolution into molten slag, the phase relationship between solid and liquid phases at equilibrium, and thermodynamic properties of P2O5-containing phase have been clarified. The reactions between solid CaO or 2CaO·SiO2 and molten CaO-FeO x -SiO2-P2O5 slag were observed by dipping solid specimen in the synthesized slag at 1573 K or 1673 K. The formation of the CaO-FeO layer and dual-phase layer of solid 2CaO·SiO2 and FeO x -rich liquid phase was observed around the interface from the solid CaO side toward the bulk slag phase side. Condensation of P2O5 into 2CaO·SiO2 phase as 2CaO·SiO2-3CaO·P2O5 solid solution was observed in both cases of CaO and 2CaO·SiO2 as solid specimens. Measurement of the phase relationship for the CaO-FeO x -SiO2-P2O5 system confirmed the condensation of P2O5 in solid phase at low oxygen partial pressure. The thermodynamics of 2CaO·SiO2-3CaO·P2O5 solid solution are to be clarified to quantitatively simulate the dephosphorization process, and the current results are also introduced. Based on the above results, the reduction of CaO consumption, the discharged slag curtailment, and energy-saving effects have been discussed.

Matsuura, Hiroyuki; Hamano, Tasuku; Zhong, Ming; Gao, Xu; Yang, Xiao; Tsukihashi, Fumitaka

2014-08-01

402

Bioactive glass nanoparticles with negative zeta potential  

Microsoft Academic Search

The purpose of this work was to produce and characterize SiO2–CaO–P2O5 bioactive glass nanoparticles with negative zeta potential for possible use in biomedical applications. 63S bioactive glass was obtained using the sol–gel method. X-ray fluorescence (XRF) spectroscopy and dispersive X-ray analysis (EDX) confirmed the preparation of the 63S bioactive glass with 62.17% SiO2, 28.47% CaO and 9.25% P2O5 (in molar

Ali Doostmohammadi; Ahmad Monshi; Rasoul Salehi; Mohammad Hossein Fathi; Zahra Golniya; Alma. U. Daniels

2011-01-01

403

Managing Crop Nutrients Through Soil, Manure and Effluent Testing  

E-print Network

Benef_its of Manure and Ef_f_luent Livestock manures are often rich in plant nutrients. Studies have shown that up to 75 percent of the nitrogen (N), 60 percent of the phosphorus (P 2 O 5 ) and 80 percent of the potas- sium (K 2 0) fed to dairy...Benef_its of Manure and Ef_f_luent Livestock manures are often rich in plant nutrients. Studies have shown that up to 75 percent of the nitrogen (N), 60 percent of the phosphorus (P 2 O 5 ) and 80 percent of the potas- sium (K 2 0) fed to dairy...

McFarland, Mark L.; Provin, Tony; Feagley, Sam E.

1998-12-10

404

Study of the structure and properties of Pb–Zn borophosphate glasses  

Microsoft Academic Search

Multicomponent oxide glasses of composition 25PbO–25ZnO–xB2O3–(50?x)P2O5, series A, and yPbO–(50?y)ZnO–20B2O3–30P2O5, series B, are investigated. The role of compositional changes on their density, chemical durability, thermomechanical properties and Raman scattering is examined. Structural changes are found to be more pronounced in the series A glasses affecting most thermomechanical properties of the glasses. Raman spectra reveal a continuous shift in frequency of

L. Koudelka; P Mošner

2001-01-01

405

Structure and properties of MoO 3-containing zinc borophosphate glasses  

Microsoft Academic Search

ZnO–B2O3–P2O5 glasses doped with MoO3 were investigated in the series (100?x)[0.5ZnO–0.1B2O3–0.4P2O5]–xMoO3, where bulk glasses were obtained by slow cooling in air within the compositional region of 0?x?60mol% MoO3. The incorporation of MoO3 into the parent zinc borophosphate glass results in a weakening of bond strength in the structural network, which induces a decrease in chemical durability and glass transition temperature.

Ji?í Šub?ík; Ladislav Koudelka; Petr Mosner; Lionel Montagne; Bertrand Revel; Ivan Gregora

2009-01-01

406

Study of potassium–zinc borophosphate glasses  

Microsoft Academic Search

Potassium–zinc borophosphate glasses were prepared and studied in two compositional series xK2O–(50?x)ZnO–10B2O3–40P2O5 and xK2O–(50?x)ZnO–20B2O3–30P2O5 with x=0, 10, 20, 30, 40 and 50 mol% K2O. The replacement of zinc by potassium decreases the density and increases the molar volume of these glasses, whereas glass transition temperature and chemical durability decrease with increasing potassium content. Structural changes were studied by 11B and

L. Koudelka; P. Mosner; M. Zeyer-Düsterer; C. Jäger

2007-01-01

407

Structure and properties of Sb 2O 3-containing zinc borophosphate glasses  

Microsoft Academic Search

ZnO–B2O3–P2O5 glasses formulated with Sb2O3 were investigated in the series 50ZnO–10B2O3–40P2O5+xSb2O3 (x=0–70mol%). With increasing Sb2O3 content, the values of glass transition temperature decrease from 492°C down to 394°C. The dissolution rate of the glasses reveals a maximum for the glass with x=15mol% Sb2O3. Raman spectra with increasing Sb2O3 content reflect the depolymerisation of phosphate chains. Antimony at low Sb2O3 content

L. Koudelka; J. Šub?ík; P. Mosner; L. Montagne; L. Delevoye

2007-01-01

408

Investigations of structure and transport in lithium and silver borophosphate glasses  

Microsoft Academic Search

Glasses in the system xLi2O·(1?x)[0.5B2O3·0.5P2O5] and xAg2O·(1?x)[0.5B2O3·0.5P2O5] have been prepared from melt quenching method. Glasses have been characterized for their densities, molar volumes, glass transition temperatures and heat capacities. Structural studies have been done using infrared and high resolution magic angle spinning nuclear magnetic resonance (HR MAS NMR) of 31P, 11B and 7Li nuclei. Boron is present only in tetrahedral

Sundeep Kumar; Philippe Vinatier; Alain Levasseur; K. J. Rao

2004-01-01

409

Energy and Resource Saving of Steelmaking Process: Utilization of Innovative Multi-phase Flux During Dephosphorization Process  

NASA Astrophysics Data System (ADS)

An increase in the utilization efficiency of CaO, one of the major fluxing agents used in various steelmaking processes, is required to reduce the amount of discharged slag and energy consumption of the process. The authors have intensively focused on the development of innovative dephosphorization process by using so called "multi-phase flux" composed of solid and liquid phases. This article summarizes the research on the above topic done by the authors, in which the formation mechanisms of P2O5-containing phase during CaO or 2CaO·SiO2 dissolution into molten slag, the phase relationship between solid and liquid phases at equilibrium, and thermodynamic properties of P2O5-containing phase have been clarified. The reactions between solid CaO or 2CaO·SiO2 and molten CaO-FeO x -SiO2-P2O5 slag were observed by dipping solid specimen in the synthesized slag at 1573 K or 1673 K. The formation of the CaO-FeO layer and dual-phase layer of solid 2CaO·SiO2 and FeO x -rich liquid phase was observed around the interface from the solid CaO side toward the bulk slag phase side. Condensation of P2O5 into 2CaO·SiO2 phase as 2CaO·SiO2-3CaO·P2O5 solid solution was observed in both cases of CaO and 2CaO·SiO2 as solid specimens. Measurement of the phase relationship for the CaO-FeO x -SiO2-P2O5 system confirmed the condensation of P2O5 in solid phase at low oxygen partial pressure. The thermodynamics of 2CaO·SiO2-3CaO·P2O5 solid solution are to be clarified to quantitatively simulate the dephosphorization process, and the current results are also introduced. Based on the above results, the reduction of CaO consumption, the discharged slag curtailment, and energy-saving effects have been discussed.

Matsuura, Hiroyuki; Hamano, Tasuku; Zhong, Ming; Gao, Xu; Yang, Xiao; Tsukihashi, Fumitaka

2014-09-01

411

Figure 1.-The older commercial-type dredge was usually of two-piece con-struction as clammers felt it tended bottom better. It was also easier to handle over  

E-print Network

Figure 1.-The older commercial-type dredge was usually of two-piece con- struction as clammers felt. NULK Rear cage Chain bag I Basic Concept Development The dredge system in use at the time the choice was made to go to a new survey was a 48- inch (122 em) surface- supplied hydraulic dredge (Fig. 2

412

NUT IU'I'IO NA I, CON'I'II,O[, O T.-I)I IY'f OI' I-ANK TO N SINI  

E-print Network

NUT IU'I'IO NA I, CON'I'II,O[, O T.-I)I IY'f OI' I-ANK TO N SINI Bahlool #12;ABSTiIACT An analysis oI lcchnical and theoretical problems associated with the measurement correlatecl with spe- cific growth rates or with different forrns oI substratc limitation. Ther onlv exception

Luther, Douglas S.

413

Uso del agua activada y con tratamiento magnético del tomate en condiciones de organopónico Use of the activated water and with magnetic treatment of the tomato under organoponics conditions  

Microsoft Academic Search

RESUMEN. Se realizó una investigación en el organopónico del Instituto de Investigaciones de Riego y Drenaje (IIRD), durante dos años sobre la aplicación del agua con tratamientos físico- químicos (activación y magnetización) para el riego del tomate variedad Rilia. Durante el período, se estudió la dinámica de crecimiento estableciéndose las diferencias entre los tratamientos de magnetización y activación del agua

Carmen E. Duarte; Greter Guevara; Maykel Méndez

414

Sono convocati per il giorno Mercoled 28 Aprile 2010 alle ore 10.00 presso il salone sindacale i seguenti componenti R.S.U. per il Comitato di Coordinamento con compiti organizzativi interni alla  

E-print Network

seguenti componenti R.S.U. per il Comitato di Coordinamento con compiti organizzativi interni alla R.S.u componente RSU della Commissione sul trattamento accessorio e Claudio Cutrona come RLS nominato dalla RSU. IL PORTAVOCE RSU Marotta Stefano #12;\\t.E a..eo L't..Ol\\. 'Qtv rJ,'-!) ~'L deR Z

Guidoni, Leonardo

415

¿CÓMO COMPITEN LAS PYMES EN LOS MERCADOS INTERNACIONALES? ANÁLISIS DE UN CLÚSTER LOCAL CON VOCACIÓN EXPORTADORA \\/ HOW DO SMEs COMPETE IN THE INTERNATIONAL MARKET? ANALYSIS OF AN EXPORT-ORIENTED LOCAL CLUSTER  

Microsoft Academic Search

Esta investigación trata de examinar si las empresas con distinto nivel de intensidad exportadora se diferencian respecto de los elementos competitivos que sustentan su competitividad en el mercado exterior, así como respecto de las estrategias de marketing que implementan en su actividad comercial internacional. Para ello, se examina una muestra de pymes pertenecientes a un clúster agroindustrial competitivo a nivel

David Jiménez Castillo; José Luis Ruiz Real; Manuel Sánchez Pérez

2012-01-01

416

08853010/$25.00 2010 IEEE 2637IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 57, no. 12, dEcEmbEr 2010  

E-print Network

EqUEncy conTrol, vol. 57, no. 12, dEcEmbEr 2010 Abstract--In this paper, we investigate the focalization skulls. The study addresses the transcranial targeting involved in ultra- sound-induced blood- sound (FUs) is a promising, noninvasive technique shown to open the blood-brain-barrier (bbb

Konofagou, Elisa E.

417

PROYECTO SOSTAUGA: EL USO SOSTENIBLE DEL AGUA Y SU RELACIN CON EL TERRITORIO EN EL CAMPUS DE ELVIA Y DE LA ZAPATEIRA DE LA UNIVERSIDAD DE A CORUA_UDC  

E-print Network

1 PROYECTO SOSTAUGA: EL USO SOSTENIBLE DEL AGUA Y SU RELACI�N CON EL TERRITORIO EN EL CAMPUS DE elemento agua y sus ecosistemas asociados. Preservar y potenciar un elemento clave del patrimonio socio �mbito de influencia. Se pretende: Conseguir el adecuado estado ecol�gico de los flujos y masas de agua

Fraguela, Basilio B.

418

The pros and cons of routine central compartment neck dissection for clinically nodal negative (cN0) papillary thyroid cancer  

PubMed Central

Metastatic disease to regional lymph nodes (LNs) is common in papillary thyroid carcinoma (PTC). LN dissection is increasingly performed as part of the surgical management of PTC. The role of prophylactic central neck dissection (pCND) in PTC is unclear. There is limited evidence to support a routine pCND in clinical setting for nodal negative (cN0) PTC. The aim of this review was to examine the pros and cons of prophylactic neck dissection in cN0 PTC. In summary, the advantages of pCND are: removal of the central LNs that potentially harbor micro-metastases, more accurate staging of disease in order to plan more individualized management, reducing the need for re-operation to remove the metastatic LNs which have developed later and possible improvement in overall survival. The disadvantages are: an extensive surgery but lack of evidence of survival benefit, higher incidence of complications with little impact on local recurrence rate, possibility of over treating in cN0 patients and it does not sound like a cost effective approach in the management of small thyroid cancer. Considering low frequency of permanent morbidity, some authors believe that prophylactic neck dissection is safe in experienced hands even though its prognostic benefit has yet to be demonstrated. PMID:25083482

Chan, Ai Chen; Wong, Kai Pun

2013-01-01

419

Selective removal of plutonium 238 from a canal sediment using a carbonate-chelant soil washing technology (ACT*DE*CON).  

PubMed

The Mound laboratory site in Miamisburg, OH, a former plutonium processing facility, contains approximately 40000 yd(3) (30,580 m3) of plutonium- and thorium-contaminated soils and sediments at levels that require remediation. Existing applicable remediation technologies are unsatisfactory, because they are expensive and do not provide volume reduction. ACT*DE*CON is a chemical soil leaching technology for the treatment of soils that utilizes contaminant dissolution via dilute selective solutions to remove radionuclides. In bench-scale tests, process parameters were developed for the optimal treatment of the Miami Erie Canal soil at the Mound site, combining the maximum plutonium removal with an acceptable amount of soil dissolution and minimizing the costs of reagents. Parameters evaluated included soil to extractant mass ratio, temperature, rinse solution composition, kinetics, and the application of several dewatering aids. Plutonium removal rates of >95% were achieved, and the residual plutonium in the treated soil proved to be very immobile-confirming that the process had removed the most accessible species of the radionuclide. Currently being tested at Mound is an engineering scale-up that includes an attrition scrubber, a counter-current extractor, and a reverse osmosis system. Economic evaluations based on bench-scale results put the treatment cost at US$278/yd(3) (US$364/m3), compared to US$350/yd(3) (US$458/m3) for the 'box-and-bury' baseline alternative treatment system. PMID:10379033

Negri, M C; Swift, N A; Carfagno, D; Neff, R A; North, J

1999-04-23

420

Quantum Computing: Pro and Con  

E-print Network

I assess the potential of quantum computation. Broad and important applications must be found to justify construction of a quantum computer; I review some of the known quantum algorithms and consider the prospects for finding new ones. Quantum computers are notoriously susceptible to making errors; I discuss recently developed fault-tolerant procedures that enable a quantum computer with noisy gates to perform reliably. Quantum computing hardware is still in its infancy; I comment on the specifications that should be met by future hardware. Over the past few years, work on quantum computation has erected a new classification of computational complexity, has generated profound insights into the nature of decoherence, and has stimulated the formulation of new techniques in high-precision experimental physics. A broad interdisciplinary effort will be needed if quantum computers are to fulfill their destiny as the world's fastest computing devices. (This paper is an expanded version of remarks that were prepared for a panel discussion at the ITP Conference on Quantum Coherence and Decoherence, 17 December 1996.)

John Preskill

1997-05-16

421

Microarray blood testing: Pros & cons.  

PubMed

Blood donation screening represents rather a unique set of blood grouping-related and pathogen detection assays. We are confronted with continuously growing numbers of testing targets. Ideally, the spectrum of clinically significant blood group antigens and alloantibodies would be wider than allowed by current routine tests. At the same time, we are witnessing an increase in emerging and re-emerging human pathogens due to urbanisation, increased international travel and trade, climate change and other factors. The spectrum of blood-borne infectious agents requiring donation screening is expected to grow correspondingly. Dengue and chikungunya viruses, variant CJD and hepatitis E virus represent just some of the candidate infectious agents for future donation screening. Multiplexing techniques, such as microarrays are well suited to address the growing number of targets, pending the increase in sensitivity of some of the microarrays assays. There are several possible scenarios for future testing algorithms, combining new multiplexing techniques with the existing blood testing assays. New generation testing platforms capable of microbiology screening, blood grouping and potential additional types of targets, are also being developed. PMID:20079661

Petrik, Juraj

2010-01-01

422

ccepting con-structive criticism  

E-print Network

to avoid perceiving well- meant feedback as an insult or assault. To accept feedback in stride and to feel will see. Y ou may think that only other people have great ideas, but chances are you have had a few yourself. You simply didn't act on them at the time. Great ideas are inspired by passion about an issue

Alpay, S. Pamir

423

Cholangiocarcinoma: preoperative biliary drainage (Con)  

PubMed Central

Aim. In patients with malignant hilar obstruction, liver resection is associated with an increased risk of postoperative liver failure attributed to the need for major liver resection in a context of obstructive jaundice. To overcome this issue, most authors recommend preoperative biliary drainage (PBD). However, PBD carries risks of its own, including, primarily, sepsis and, more rarely, tumor seeding, bile peritonitis, and hemobilia. We, unlike most authors, have not used routine PBD before liver resection in jaundiced patients. Material and methods. Our series includes 62 patients who underwent major liver resection for cholangiocarcinoma; 33 of these had elevated bilurubin (60–470 µmol/l) and were operated without PBD. There were 43 extended right hepatectomies and 18 extended left hepatectomies. Results. Hospital deaths occurred in 5 patients (8%) including 3 of 33 jaundiced patients (9%, ns). All deaths occurred after extended right hepatectomy (12%), including 3 patients with a serum bilirubin level above 300 µmol/l and 2 with normal bilirubin. There were no deaths after left-sided resections, whatever the level of bilirubin. Conclusions. PBD can be omitted in the following situations: recent onset jaundice (<2–3 weeks), total bilirubin <200 µmol/l, no previous endoscopic or transhepatic cholangiography, absence of sepsis, future liver remnant >40%. These criteria include most patients requiring left-sided resections and selected patients requiring right-sided resections. In other cases, PBD is required, associated with portal vein embolization in the event of a small future liver remnant. PMID:18773089

Laurent, A.; Tayar, C.

2008-01-01

424

De conformidad con la Ley de Derechos Humanos de 1977 del Distrito de Columbia, segn enmendada, Cdigo Oficial del Distrito de Columbia, Seccin 2-1401.01 et seq., (Ley), el Distrito de Columbia no discrimina, de forma visible ni percibida, por  

E-print Network

De conformidad con la Ley de Derechos Humanos de 1977 del Distrito de Columbia, según enmendada la ausencia, el empleado no perderá ninguno de sus beneficios de empleo, ni tampoco los derechos por las estipuladas por la Ley. LAS QUEJAS CON RESPECTO A ALGUNA DENEGACI�N DE LOS DERECHOS EN VIRTUD DE

Weaver, Harold A. "Hal"

425

www.ext.vt.edu Produced by Communications and Marketing, College of Agriculture and Life Sciences,  

E-print Network

- agement of manures, and comparing poultry litter to commercial (inorganic) fertilizer. Six treatments were. · Poultrylitterhadthebeneficialeffectofraisingsoil pH by an average of 0.2 relative to the inorganic fer- tilizer treatments (table 2). · TheN-basedtreatments(whetherlitterorcommer- cial fertilizer) applied up to 783 pounds of P2 O5 per Impact of Changing From Nitrogen- to Phosphorus

Liskiewicz, Maciej

426

RESEARCH ARTICLE Improved yield and nutrient efficiency in two globe artichoke  

E-print Network

as a pollutant involved in ecosystems, biodiversity and food safety deterioration (Ehaliotis et al. 2010; Spiertz experiment, we studied the effects of two phosphorus fertilization rates, 50 and 150 kg P2O5ha-1 , and four characterized by more efficient utilization of soil mineral nutrients, are effective tools to promote both yield

Boyer, Edmond

427

Structural studies of boron and tellurium coordination in zinc borophosphate glasses by 11B MAS NMR and Raman spectroscopy  

NASA Astrophysics Data System (ADS)

Zinc borophosphate glasses doped with TeO2 with different B2O3/P2O5 ratio were prepared, their basic properties were determined and their structure was studied by 11B MAS NMR and Raman spectroscopies. Structural studies were devoted to the investigation of changes in boron coordination in the dependence on changes in TeO2 content and in B2O3/P2O5 ratio in the borophosphate glasses. A special attention was devoted to the formation of mixed structural units B(OP)4-n(OTe)n in the studied borophosphate glasses, where by the deconvolution of 11B MAS NMR spectra quantitative data on the number of BO3 and B(OP)4-n(OTe)n mixed structural units were obtained. Raman spectra showed shortening of phosphate chains both with increasing TeO2 and B2O3 content. Raman spectra also showed that with the replacement of P2O5 by B2O3 in the studied glasses TeO4 units are replaced by TeO3 units as the number of oxygen atoms in the glass decreases when the B2O3/P2O5 ratio increases.

Vosejpková, Kate?ina; Koudelka, Ladislav; ?ernošek, Zden?k; Mošner, Petr; Montagne, Lionel; Revel, Bertrand

2012-02-01

428

Supporting Information for: New Substrates and Enzyme Assays for the Detection of Mucopolysaccharidosis III  

E-print Network

high vacuum. Dichloromethane was dried over P2O5 and distilled under dry N2. The first for 24 hours. The solvent was removed under vacuum. The product was loaded onto silica gel and eluted was cooled to room temperature, and the solvent was removed under vacuum. 3 mL of H2O was added

Gelb, Michael

429

[Preliminary study on the characteristics of Bupleurum chinense in nutrition uptake].  

PubMed

It was studied that the characteristics of Bupleurum chinense DC. in nutrition uptake based on potted and field experiment to provide a properly fertilizer application measure. The result showed that the absorption amounts of N, P and K were in the order of K > N > P under field condition. For one-year-old B. chinesnse DC., the average N, P2O5 and K2O absorption per 100 kg dry matter of root were 11.77 kg, 2.43 kg, 14.07 kg respectively; for two-year-old, the average N, P2O5 and K2O absorption amount per 100 kg dry matter of root were 12.11 kg, 2.74 kg, 18.39 kg respectively. The total absorption amount of N, P2O5 and K2O were lower in the first year, while the percentage of content was higher, that was to say, the demand for N, P and K was urgent in the first year. The accumulation peak of N, P2O5 and K2O occurred regreening to later elongation stage in the second year. The ratio of N, P and K were differential in different growth stages. PMID:17039870

Zhu, Zai-biao; Liang, Zong-suo; Wei, Xin-rong; Wang, Wei-ling; Shu, Zhi-ming

2006-06-01

430

www.ext.vt.edu Produced by Communications and Marketing, College of Agriculture and Life Sciences,  

E-print Network

), and potassium (potash, K2 O) ­ due to variations in soil types, soil test phos- phorus and potassium levels way to measure how much P2 O5 and K2 O are available in soils, and soil tests are available through and Calculating Application Rates Rory Maguire, Assistant Professor, Crop and Soil Environmental Sciences

Liskiewicz, Maciej

431

These fertilizer guidelines, such as this one for ber-ries, are based on soil/plant relationships established  

E-print Network

, raspberries, and strawberries based on soil tests. Application rate (lb/acre)2 Soil test P (ppm) Blue- Rasp5 , or P2 O5 x 0.44 = P. Northern Idaho Fertilizer Guide Blueberries, Raspberries, and Strawberries. Potassium fertilizer rates for blueberries, rasp- berries, and strawberries based on soil tests. Application

O'Laughlin, Jay

432

Luminescence Quenching and Energy Transfer in Supramolecular Solids  

E-print Network

-make solids with desirable physical or chemical properties. This is not only the case for bulk properties molecule, as for example observed in the mixed potassium/methyl viologen salt of the [Pt2(pop)4]4- [pop ) pyrophosphite, (H2P2O5)2-] anion.6 Such quenching is commonly associated with pronounced color changes which

Coppens, Philip

433

Quality of life and psycho-social development in children with otitis media with effusion Qualità di vita e sviluppo psico-sociale nei bambini con otite media secretiva  

Microsoft Academic Search

th class, mostly due to persistent attention disturbances. In the State-Trait Anxiety Inventory test, 50% of parents or care- givers had a high state-anxiety score and so were mostly con- cerned with health status of the children. The State-Trait Anx- iety Inventory results indicated that 50% of parents or care- givers had a high trait-anxiety score and thus had an

L. BELLUSSI; M. MANDALÀ; F. M. PASSÀLI; G. C. PASSÀLI; M. LAURIELLO; D. PASSALI

434

Expression of Tissue factor in Adenocarcinoma and Squamous Cell Carcinoma of the Uterine Cervix: Implications for immunotherapy with hI-con1, a factor VII-IgGFc chimeric protein targeting tissue factor  

PubMed Central

Background Cervical cancer continues to be an important worldwide health problem for women. Up to 35% of patients who are diagnosed with and appropriately treated for cervical cancer will recur and treatment results are poor for recurrent disease. Given these sobering statistics, development of novel therapies for cervical cancer remains a high priority. We evaluated the expression of Tissue Factor (TF) in cervical cancer and the potential of hI-con1, an antibody-like-molecule targeted against TF, as a novel form of immunotherapy against multiple primary cervical carcinoma cell lines with squamous- and adenocarcinoma histology. Methods Because TF is a transmembrane receptor for coagulation factor VII/VIIa (fVII), in this study we evaluated the in vitro expression of TF in cervical carcinoma cell lines by immunohistochemistry (IHC), real time-PCR (qRT-PCR) and flow cytometry. Sensitivity to hI-con1-dependent cell-mediated-cytotoxicity (IDCC) was evaluated in 5-hrs-51chromium-release-assays against cervical cancer cell lines in vitro. Results Cytoplasmic and/or membrane TF expression was observed in 8 out of 8 (100%) of the tumor tissues tested by IHC and in 100% (11 out of 11) of the cervical carcinoma cell lines tested by real-time-PCR and flow cytometry but not in normal cervical keratinocytes (p = 0.0023 qRT-PCR; p = 0.0042 flow cytometry). All primary cervical cancer cell lines tested overexpressing TF, regardless of their histology, were highly sensitive to IDCC (mean killing ± SD, 56.2% ± 15.9%, range, 32.4%-76.9%, p < 0.001), while negligible cytotoxicity was seen in the absence of hI-con1 or in the presence of rituximab-control-antibody. Low doses of interleukin-2 further increased the cytotoxic effect induced by hI-con1 (p = 0.025) while human serum did not significantly decrease IDCC against cervical cancer cell lines (p = 0.597). Conclusions TF is highly expressed in squamous and adenocarcinoma of the uterine cervix. hI-con1 induces strong cytotoxicity against primary cervical cancer cell lines overexpressing TF and may represent a novel therapeutic agent for the treatment of cervical cancer refractory to standard treatment modalities. PMID:21693061

2011-01-01

435

Aceptabilidad del diagn?stico r?pido casero para HIV entre hombres gay y otros hombres que tienen sexo con hombres (G&HSH) de la Ciudad de Buenos Aires  

PubMed Central

Resumen El uso del diagnóstico rápido para HIV en Argentina, así como otros países de Latinoamérica, ha sido limitado hasta el momento. Este trabajo reporta los resultados provenientes de un estudio cualitativo realizado entre hombres gays y otros hombres que tienen sexo con hombres (G&HSH) de la Ciudad de Buenos Aires, Argentina. El objetivo principal del mismo fue conocer las ventajas y desventajas que los hombres G&HSH perciben en relación al diagnóstico rápido casero para HIV. Se realizaron ocho grupos focales con 73 participantes en los cuales se discutió acerca de las ventajas y desventajas del uso de los diagnósticos rápidos. Las respuestas fueron codificadas utilizando un programa para análisis de datos cualitativos (NVivo) y analizadas temáticamente. Los participantes describieron numerosas ventajas sobre el uso del diagnóstico rápido casero, aunque algunos reportaron importantes preocupaciones dentro de las cuales se destaca la posibilidad de impulsos suicidas si alguien recibe un resultado positivo estando solo. En términos generales se observó una gran aceptabilidad para el uso del diagnóstico rápido si el mismo es realizado por personal de salud en lugares acondicionados para este fin.

Balan, Ivan C.; Carballo-Dieguez, Alex; Marone, Ruben O.; Pando, Maria A.; Barreda, Victoria; Avila, Maria M.

2011-01-01

436

Do not disturb the animals! or, how Con Edison saved $300,000 using a trenchless technology to renew 3,000 feet of leaking gas main at the Bronx Zoo  

SciTech Connect

Every leaking gas main presents a challenge. But when that leaking main follows a series of sweeping bends on its route through North America`s largest urban wildlife park, it presents a special challenge. That was the situation Consolidated Edison Company of New York Inc. recently faced when numerous leaks were discovered along 3,000 feet of a 95-year-old, 12-inch cast-iron main that winds through New York City`s Bronx Zoo. Con Edison knew it needed a long-term solution to this increasingly common problem. Thanks to the cooperative efforts of the utility`s operations and research departments and the Gas Research Institute (GRI), Con Edison also knew about a trenchless technology that could renew the pipe with minimal impact to the environment--while saving the utility a substantial sum of money in the process. In the Paltem system, a woven polyester hose is injected with an epoxy resin and then inverted (turned inside out) into a pipe at an access pit. The liner then bonds to the inside wall of the pipe, forming a smooth, flexible and pressure-resistant lining. The process is environmentally safe, requires very little excavation and can be installed in days, rather than the weeks or months it can take to dig up and replace existing pipe.

Bufe, M.

1995-07-01

437

New phospho-tellurite glasses with optimization of transition temperature and refractive index for hybrid microstructured optical fibers  

NASA Astrophysics Data System (ADS)

The glass formation and compositional dependences of glass thermal properties and optical properties were investigated in TeO2-ZnO-Na2O-P2O5 system. The refractive index at 1.55 ?m and glass transition temperature varied in a wide range from 1.513 to 2.036 and from 265 °C to 376 °C by controlling of the TeO2/P2O5 and ZnO/Na2O content, respectively. These properties enable phospho-tellurite glasses with large freedom in designing and fabrication of hybrid microstructured optical fiber. The structures of glasses were investigated by Raman spectra to understand their dependence of structure on composition. Using the present glasses, some hybrid microstructured optical fibers with various dispersion profiles were designed.

Duan, Zhongchao; Tong, Hoang Tuan; Liao, Meisong; Cheng, Tonglei; Erwan, Motillon; Suzuki, Takenobu; Ohishi, Yasutake

2013-10-01

438

Thermal behaviour and fragility of Sb 2 O 3 -containing zinc borophosphate glasses  

Microsoft Academic Search

Thermal behaviour of the glass series (100-x)[50ZnO-10B2O3-40P2O5]·xSb2O3 (x=0-42 mol%) and (100-y)[60ZnO-10B2O3-30P2O5]·ySb2O3 (y=0-28 mol%) was investigated by DSC and TMA. The addition of Sb2O3 results in a decrease of the glass transition temperature and crystallization temperature in both compositional series. All\\u000a glasses crystallize on heating in the temperature range of 522–632°C. Thermal expansion coefficient of the glasses monotonously\\u000a increases with increasing

J. Šub?ík; P. Mošner; L. Koudelka

2008-01-01

439

Structure and properties of mixed sodium–lead borophosphate glasses  

Microsoft Academic Search

Mixed sodium–lead borophosphate glasses were prepared in two compositional series xNa2O–(50?x)PbO–10B2O3–40P2O5 and xNa2O–(50?x)PbO–20B2O3–30P2O5 with x=0, 10, 20, 30, 40 and 50mol% Na2O. Their density decreases and molar volume increases slightly with increasing Na2O content. Chemical durability decreases steeply for glasses containing 40–50mol% Na2O, whereas glass transition temperatures reveals a minimum at the glasses with 30–40mol% Na2O. The 31P MAS NMR

L. Koudelka; P. Mosner; M. Zeyer; C. Jager

2005-01-01

440

Trace element evidence for a laterally inhomogeneous moon  

NASA Technical Reports Server (NTRS)

A number of trace element interrelationships support the concept of a laterally inhomogeneous moon based originally on Clr/P2O5 ratios. The correspondence between Clr/P2O3 and Rb/Sr ratios in basalts are of special interest since the isotropic evolution of the latter pair of elements relates to the earliest history of the moon. This implies the times when the Clr/P2O5 relationships were established. The early magma ocean is conjectured to have been made up of non-intermixing seas resulting either from large convection cells or large body accretion. These mutually exclusive regions could be lunar geological provinces. It is proposed that the diversity of basalts from the Apollo 17 site is related to the lateral inhomogeneity of the moon. Ca/Na ratios in basalts show a trend which parallels that of Ru/Os and in a corresponding fashion may serve as a depth indicator.

Jovanovic, S.; Reed, G. W., Jr.

1978-01-01

441

Fluorine in lunar samples: implications concerning lunar fluorapatite  

NASA Astrophysics Data System (ADS)

The F contents of a number of Apollo 14 and 15 samples range from less than a ppm for anorthosite rock fragments to ~165 ppm for some soils and breccias. Apollo 15 soils tend to have lower F contents (50-70 ppm) than soils from other sites. In most cases samples were run simultaneously with W-1 in which F was determined to be 216 (±11) ppm. The F/P 2O 5 ratio is 0·032 ± 0·005 in soils and rocks. A correlation exists in soils between F, P 2O 5, and that fraction of the Cl which is insoluble in hot water. The F/Cl r ratio in soils and rocks, though different, requires that the phosphate phase involved be fluorapatite; this is consistent with mineralogical observations. F, like Cl, is correlated with KREEP elements at all sites for which data are available.

Reed, G. W., Jr.; Jovanovic, S.

1973-06-01

442

Modification of magnesium phosphate glass by H irradiation:Formation of oh-bond and phosphorus-colloid  

NASA Astrophysics Data System (ADS)

MgO.P2O5 glasses were irradiated with 120 keV H+ ions at room temperature to a dose of 1016 ˜ 1010/cm2. Optical absorption above 2 eV was found to increase by the ion irradiation and this is ascribed to phosphorus colloid formation. FTIR measurements showed that the absorption intensity near 3200 cm-1 due to PO-H bond decreased at low ion dose (<1017/cm2) and increased at higher dose. This is ascribed to combination of PO-H bond breaking by ion irradiation and PO-H bond formation due to chemical interaction of H+ ions with the substrate. Molecular water formation which was also found at a high dose and P colloid formation can be explained by reduction of P2O5 component with H+ ions.

Matsunami, N.; Kawamura, K.; Hosono, H.

443

A novel tellurite-phosphate glass for hybrid microstructured optical fibers  

NASA Astrophysics Data System (ADS)

The compositional dependences of glass formation, thermal properties and optical properties are investigated for TeO2-ZnO-Na2O-P2O5 system for hybrid microstructured optical fibers. The refractive indexes at 1.55 ?m and glass transition temperature vary in a wide range from 1.513 to 2.036 and from 265°C to 376°C by controlling of the TeO2/P2O5 and ZnO/Na2O content, respectively. These properties endow tellurite-phosphate glasses with large freedom in the hybrid microstructured optical fiber design. The structures of glasses are investigated by Raman spectra to understand the structural dependence on composition. Using the present glasses, some microstructured optical hybrid fibers with particular dispersion profiles are designed and demonstrated.

Duan, Zhongchao; Tong, Hoang Tuan; Liao, Meisong; Asano, Koji; Erwan, Motillon; Sega, Daisuke; Kano, Yasuhiro; Nagasaka, Kenshiro; Suzuki, Takenobu; Ohishi, Yasutake

2013-03-01

444

Estudio de síntesis y acoplamiento molecular inducido de nuevos derivados N-{4-[4-(1H-indol-2-carbonil)-1-piperazinil]fenilarilamidas : hetero bis-ligandos con potencial actividad serotoninérgica 5-HT1A en la búsqueda de nuevas moléculas antidepresivas .  

E-print Network

??Estudios de funcionalización del 1H-indol-2-acido carboxílico, condujeron a la síntesis de una familia de compuestos N-{4-[4-(1H-Indol-2-carbonil)-1-piperazinil]-fenil}- arilamidas 4(a-h) con potencial actividad serotoninérgica en el sistema… (more)

Andrades Lagos, Juan Andrés

2013-01-01

445

Ionic field strength changes in soda-phosphate glasses induced by thorium  

NASA Astrophysics Data System (ADS)

Density, molar volume and ionic field strength changes induced by addition of ThO{2} to 2P2O5\\cdot Na2O glass matrix are correlated in order to understand the structural role of thorium oxide in the investigated glasses and to evidence the structural evolution of the samples as a function of composition. Gamma activity measurements are used to check thorium incorporation in the soda-phosphate matrix.

Simon, V.

2004-02-01

446

Cottonseed, protein and oil yields and oil properties as affected by nitrogen and phosphorus fertilization and growth regulators  

Microsoft Academic Search

Two experiments were carried out at our research center during the 1981 and 1982 seasons on cotton cultivar Giza 75 (Gossypium barbadense L.) to investigate the influence of nitrogen fertilization rates (72, 144 or 216 kg\\/ha.), phosphorus levels (36 or 72 kg P2O5\\/ha.) and three growth regulators (IAA, IBA or NAA) applied to cotton plants at 10 ppm and sprayed

Zakaria M. Sawan; Abd EI-Hamid A. EI-Farrab; Sania Abd EI-Latifb

1988-01-01

447

A Sodium-Nitrate-Based, Water-Soluble, Granular Fertilizer for Sport Fish Ponds  

Microsoft Academic Search

We tested a granular, water-soluble, sodium-nitrate-based fertilizer (8% N, 24% P2O5, 15% K2O, and trace elements; per application rates of 8 and 16 kg\\/ha) for potential use in freshwater sport fish ponds and compared it with a liquid fertilization program commonly used in the United States. At 16 kg\\/ha application, the sodium-nitrate-based fertilizer was as effective as the liquid fertilizer

Yalcin Tepe; Claude E. Boyd

2001-01-01

448

Alternating olefin-carbon monoxide copolymers and their derivatives Preparation and characterization by pyrolysis-gas chromatography\\/mass spectrometry (Py-GC\\/MS)  

Microsoft Academic Search

Alternating copolymers of carbon monooxide and olefins (ethylene, styrenes and norbornadienes) and their modified polymers with primary amines, P2S5 and P2O5 were prepared. These were then pyrolyzed at 550°C for 10 s in a Py-GC\\/MS system. In each pyrolysis, hydrocarbons arising from the corresponding olefin comonomer were detected as the volatile products. Py-GC\\/MS confirmed that these 1,4-arrangements of the ketonic

Jitsuo Kiji; Tamon Okano; Tadahisa Chiyoda; Fabio Bertini; Guido Audisio

1997-01-01

449

J Therm Anal Calorim (2013) p: 18 DOI 10.1007/s10973-013-3280-3  

E-print Network

entropy of bioactive glasses and Zn-doped glasses E. Wers, H. Oudadesse () Received: 22 March 2013 Général Leclerc, 35042 Rennes Cedex, France Abstract Bioactive glasses prepared in SiO2­CaO­Na2O and P2O5 characteristics (Tg, Tc and Tf) of pure bioactive glass elaborated with different amounts of CaO, Na2O in pure

Paris-Sud XI, Université de

450

Pre-eruptive geochemistry of the ignimbrite-forming magmas of the Campanian Volcanic Zone, Southern Italy, determined from silicate melt inclusions  

Microsoft Academic Search

Summary ¶The Campanian Ignimbrite rock samples include two compositionally distinct populations of clinopyroxene phenocrysts, and the entrapped MI (melt inclusions) are also different in composition. The cores of the more MgO-enriched phenocrysts carry basaltic trachyandesite MI that contain >6?wt.% MgO, whereas other phenocrysts contain MI with 2, P 2O 5, SO 2, and Sr and show marginally higher ratios of

J. D. Webster; F. Raia; C. Tappen; B. De Vivo

2003-01-01

451

Mössbauer and ESR investigation of the behaviour of iron in vanadium borophosphate glasses  

Microsoft Academic Search

Mssbauer and ESR measurements were performed on vanadium borophosphate glasses containing iron. The glass composition was\\u000a 78 mole% V2O5, 15 mole% P2O5, 7 mole% B2O3 and different amounts of Fe2O3 (0.5–50 mole%) were added. The relative percentage of iron in different states and site positions could be determined for\\u000a each glass composition. Correlation between the behaviour of iron and its

N. A. Eissa; H. A. Sallam; W. M. El Meliegy; A. M. Hassan Rezk

1990-01-01

452

Mössbauer and ESR investigation of the behaviour of iron in vanadium borophosphate glasses  

Microsoft Academic Search

Mössbauer and ESR measurements were performed on vanadium borophosphate glasses containing iron. The glass composition was 78 mole% V2O5, 15 mole% P2O5, 7 mole% B2O3 and different amounts of Fe2O3 (0.5 50 mole%) were added. The relative percentage of iron in different states and site positions could be determined for each glass composition. Correlation between the behaviour of iron and

N. A. Eissa; H. A. Sallam; W. M. El Meliegy; A. M. Hassan Rezk

1990-01-01

453

Mössbauer and electron spin resonance investigation of the effect of heat treatment on the structural units and magnetic properties of iron vanadium borophosphate glasses  

Microsoft Academic Search

In our previous work \\/1\\/, the behaviour of iron addition to vanadium borophosphate (V. B. P.) glasses (78 mole% V2O5, 15 mole% P2O5, 7 mole% B2O3 and x mole% Fe2O3 where (0.5<=x<=50) was investigated by (ME) and (ESR) techniques. In the present work, the investigations were extended to study the effect of heat treatment (H. T) on the same system

H. A. Sallam; N. A. Eissa; W. M. El-Meligy; A. M. Hassan Rezk

1992-01-01

454

Mössbauer and electron spin resonance investigation of the effect of heat treatment on the structural units and magnetic properties of iron vanadium borophosphate glasses  

Microsoft Academic Search

In our previous work \\/1\\/, the behaviour of iron addition to vanadium borophosphate (V. B. P.) glasses (78 mole% V2O5, 15 mole% P2O5, 7 mole% B2O3 and x mole% Fe2O3 where (0.5?x?50) was investigated by (ME) and (ESR) techniques. In the present work, the investigations were extended to\\u000a study the effect of heat treatment (H. T) on the same system

H. A. Sallam; N. A. Eissa; W. M. El-Meligy; A. M. Hassan Rezk

1992-01-01

455

An XPS study of oxygen bonding in zinc phosphate and zinc borophosphate glasses  

Microsoft Academic Search

X-ray photoelectron spectroscopy has been used to determine oxygen bonding in a series of xZnO · (1 ? x)P2O5 (0.50 ? x ? 0.67) glasses. Curve fitting of the O 1s spectra leads to a quantitative measure of the bridging-to-non-bridging oxygen ratio which is shown to depend on composition according to a simple structural depolymerization model. A third peak, present

Richard K. Brow

1996-01-01

456

Elastic behaviour down to 77 K of AgI-doped borophosphate glasses  

Microsoft Academic Search

An extensive experimental study of sound velocity and thermal expansion was carried out for a wide variety of AgI-Ag2O-B2O3-P2O5 superionic glasses. Measurements were made in the 77-340 K temperature range and at a frequency of 5 MHz. A combination of thermally activated relaxation and anharmonic processes seems to describe the velocity behaviour well. In addition, the elastic constants at room

G. Carini; M. Cutroni; M. Federico; G. Tripodo

1988-01-01

457

The structural properties of CdO-Bi 2 O 3 borophosphate glass system containing Fe 2 O 3 and its role in attenuating neutrons and gamma rays  

Microsoft Academic Search

A glass system with chemical formula x Bi 2 O 3 -(30- x )CdO-10B 2 O 3 -20Fe 2 O 3 -40P 2 O 5 (0<= x <=30) wt% is prepared to be used as radiation shield. The mass attenuation coefficient and half value layer of the glass system to gamma rays have been measured experimentally and compared with those

H. A. Saudi; A. G. Mostafa; N. Sheta; S. U. El Kameesy; H. A. Sallam

2011-01-01

458

Crystal nucleation and growth in glasses from inorganic wastes from urban incineration  

Microsoft Academic Search

This paper reports the results of a study of the feasibility of recycling the fly ashes from domiciliary waste incineration by producing glasses and glass–ceramics. The major components of the fly ashes, Tyseley (F+L) and Tyseley (F), which were from a British domiciliary incinerator, were CaO, SiO2 and Al2O3 but nucleating agents, such as TiO2, P2O5 and Fe2O3, were also

M. Romero; R. D Rawlings; J. Ma Rincón

2000-01-01

459

Brian H. Grubb - Propagation Protocol for Bareroot Silver Buffaloberry (Shepherdia argentea) - Native Plants Journal 8:3  

Microsoft Academic Search

Silver buffaloberry (Shepherdia argentea (Pursh) Nutt. [Elaeagnaceae]) can be successfully produced as a 2+0 bareroot nursery stocktype from seeds. In Colorado, we sow seeds in late fall, typically the first to second week of October. Plants will emerge by the second week of May. We apply granular ammonium sulfate (21N:0P2O5:0K2O:24SO4) during both growing seasons to meet our target specifications. At

Brian H Grubb

2007-01-01

460

Influence of fertilizing on the 137Cs soil–plant transfer in a spruce forest of Southern Germany  

Microsoft Academic Search

Fertilization with 2.5t\\/ha limestone: (83% CaCO3, 8% MgO, 6% K2O, 3% P2O5) reduces the 137Cs transfer from spruce forest soil into plants like fern (Dryopteris carthusiana) and blackberry (Rubus fruticosus) by a factor of 2–5 during at least 11 years as measured by the aggregated transfer factor Tag. In 1997 and 2006 these results were confirmed by additional measurements of

G. Zibold; E. Klemt; I. Konopleva; A. Konoplev

2009-01-01

461

Strain-induced delamination of edge-grafted graphite.  

PubMed

Edge-selectively grafted graphite (EGG) with poly(ether-ketone) was prepared by the Friedel-Crafts acylation in a mild polyphosphoric acid (PPA)-phosphorous pentoxide (P(2)O(5)) mixture. The homogeneous reaction dope was coagulated in air moisture at different temperatures. The morphology of expanded EGG was changed from balls, balls/rods and rods with respect to coagulation temperatures of 80, 60, 40 and 25 °C, respectively. PMID:23041764

Choi, Eun-Kyung; Jeon, In-Yup; Shin, Yeon-Ran; Baek, Jong-Beom

2012-11-21

462

Ecology and thermal inactivation of microbes in and on interplanetary space vehicle components  

NASA Technical Reports Server (NTRS)

The thermal inactivation curve for Bacillus subtilis var. niger spores on the Viking lander is examined. Tests were conducted at 113 C and 25% RH, and over a wide range of temperatures using .001% RH and additions of P2O5 to dry the environment. Results show the 25% RH environment did not significantly reduce the survival curve, while the survival curves for spores treated under the drier .001% RH environment was reduced by a factor of 3.

Campbell, J. E.

1973-01-01

463

A comparative study between in vivo bone ingrowth and in vitro apatite formation on Na 2O–CaO–SiO 2 glasses  

Microsoft Academic Search

This study compared in vivo bioactivity with the in vitro apatite-forming ability of biomaterials. Granules of five kinds of P2O5-free Na2O–CaO–SiO2 glasses, showing different apatite-forming ability in simulated body fluid (SBF), were implanted into a defect on the femoral condyle of rabbits. Bone ingrowth was evaluated using scanning electron microscopy among five kinds of glasses at 1, 2, 3, 6,

Shunsuke Fujibayashi; Masashi Neo; Hyun-Min Kim; Tadashi Kokubo; Takashi Nakamura

2003-01-01

464

Synthesis and characterization of Ag+ ion conducting glassy electrolytes  

NASA Astrophysics Data System (ADS)

Synthesis and characterization of new Ag+ ion conducting glassy systems: x[0.75AgI:0.25AgC1]: (1 - x)[Ag2O:P2O5], where 0.1 < x < 1 in molar weight fraction, are reported. The present glassy electrolytes have been synthesized by melt-quench technique using a high-speed twin roller-quencher. An alternate host salt: "quenched [0.75AgI:0.25AgC1] mixed system/solid solution", has been used in place of the traditional host AgI. The compositional dependence conductivity studies on the glassy systems: x[0.75AgI:0.25AgC1]:(1 - x)[Ag2O:P2O5] as well as xAgI:(1 - x)[Ag2O:P2O5] prepared identically, indicated that the composition at x = 0.75 exhibited the highest room temperature conductivity (? ~ 5.5 x 10-3 S cm-1). The composition: 0.75[0.75AgI:0.25AgC1]:0.25[Ag2O:P2O5] has been referred to as optimum conducting composition (OCC). The some basic ion transport parameters viz. ionic conductivity (?), ionic mobility (?), mobile ion concentration (n), ionic drift velocity (vd), ion transference number (tion) and activation energy (Ea) values have been characterized with the help of various experimental techniques. A solid state battery was fabricated and its basic cell parameters calculated.

Chandra, Angesh; Bhatt, Alok; Chandra, Archana

2013-07-01

465

Polylactic acid–phosphate glass composite foams as scaffolds for bone tissue engineering  

Microsoft Academic Search

Phosphate glass (PG) of the composition 0.46(CaO)- 0.04(Na2O)- 0.5(P2O5) was used as filler in poly-L-lactic acid (PLA) foams developed as degradable scaffolds for bone tissue engineering. The effect of PG on PLA was assessed both in bulk and porous composite foams. Composites with various PG content (0, 5, 10, and 20 wt %) were melt-extruded, and either compression-molded or foamed

G. Georgiou; L. Mathieu; D. P. Pioletti; P.-E. Bourban; J.-A. E. Månson; J. C. Knowles; S. N. Nazhat

2007-01-01

466

Assimilation–fractional crystallization origin of Archean Sanukitoid Suites: Western Superior Province, Canada  

Microsoft Academic Search

Geochemical and Sm–Nd and Pb–Pb isotopic data are presented for post-tectonic diorites, monzodiorites, granodiorites and granites of late Archean age from the western portion of the Superior Province. These suites possess relatively high Mg numbers (0.43–0.62), high abundances of Cr, Sr, Ba and P2O5, low Rb\\/Sr ratios and steeply fractionated, light rare earth element (REE)-enriched patterns relative to pre-tectonic plutonic

R. Stevenson; P. Henry; C. Gariépy

1999-01-01

467

Comparative Responses of Borago officinalis and Echium vulgare to Different Nitrogen and Phosphorus Sources  

Microsoft Academic Search

The effect of organic and mineral nitrogen, phosphorus, and bio-fertilizers on growth, yield, and fixed oil content of borage (Borago officinalis L.) and viper's bugloss (Echium vulgare L.) plants were studied in two field experiments. Nitrogen as ammonium nitrate at 0.75 and 110 kg N hectare; phosphorus as calcium super-phosphate at 50 and 75 kg P2O5 hectare; compost at 1.32

S. F. Hendawy; S. El-Gengaihi

2010-01-01

468

Cuttp. Biochem. Phlsiol.. VoL 6lL 1tp.19 to 22 @ Pergatwn Press Ltd 1978. Prinle.l itr Grtal Brilain  

E-print Network

was achievedby the addition of 1.5vols of distilled water and 0lOG1X29/7tloll0I-m |9$01.my'O 0.5 vols of toluene in a vacuum oven (40'C) over P2O5 for 4 hr before being allowed to cool to room temperature and finally reweighed. The remaining sample was suitably diluted with a known amount of distilled water

Marsh, Helene

469

IMPORTANCE OF STARTER FERTILIZER COMPOSITION  

E-print Network

-till and no-till) · More frequent starter response at soil test K AdvantageTillage System Mallarino, Iowa 2Chisel-disk 4-5No-till 8Ridge-till -- bu/acre -- #12;No-till Corn/acre ---------------lb/acre MeanNo-till Moldboard plow Starter N-P2O5-K2O #12;Effect of tillage and soil test K on corn

Balser, Teri C.

470

Modification of H-ZSM-5 zeolites with phosphorus. 2. Interaction between phosphorus and aluminum studied by solid-state NMR spectroscopy  

Microsoft Academic Search

A suite of one- and two-dimensional solid-state NMR methods was used to follow the complex structural changes in different types of phosphorus species in P-ZSM-5 zeolites that were generated upon treatment of H-ZSM5 zeolites with 0–15% P2O5, followed by calcination or calcination and steaming. Through space and through bond 27Al–31P correlations were used for the first time to study the

K. Damodaran; J. W. Wiench; S. M. Cabral de Menezes; Y. L. Lam; J. Trebosc; J.-P. Amoureux; M. Pruski

2006-01-01

471

Modification of H-ZSM-5 zeolites with phosphorus. 1. Identification of aluminum species by 27Al solid-state NMR and characterization of their catalytic properties  

Microsoft Academic Search

Aluminum species in P-ZSM-5 zeolites were identified and quantified using 27Al MAS and MQMAS NMR methods. Samples containing between 0% and 15% P2O5 were studied after calcination or calcination followed by steaming. In addition to the tetrahedral framework aluminum, Altet-f, and the octahedral aluminum, Aloct, we also observed significant quantities of highly distorted aluminum with tetrahedral coordination, Altet-dis, and octahedrally

S. M. Cabral de Menezes; Y. L. Lam; K. Damodaran; M. Pruski

2006-01-01

472

Agricultural potential of anaerobically digested industrial orange waste with and without aerobic post-treatment  

Microsoft Academic Search

The potential of anaerobically digested orange waste with (AAD) and without (AD) aerobic post-treatment for use in agriculture was evaluated through chemical analyses, short-term phytotoxicity and long-term plant assays. Chemical analyses showed that AD contained ammonia and organic acids, and aerobic post-treatment did not significantly remove these phytotoxins. The N:P2O5:K2O ratio in AD was 1:0.26:0.96 and aerobic post-treatment did not

Prasad Kaparaju; Jukka Rintala; Aimo Oikari

2012-01-01

473

New macroporous calcium phosphate glass ceramic for guided bone regeneration  

Microsoft Academic Search

This work describes a method to obtain macroporous resorbable glass and glass ceramic scaffolds with controlled biodegradability for tissue engineering applications. The constructs consisted of glass and glass ceramics in the system P2O5–CaO–Na2O–TiO2 and they were prepared by foaming a slurry of glass particles by addition of a H2O2 solution, and subsequent sintering of the porous structures obtained. Different thermal

Melba Navarro; Sergio del Valle; Salvador Mart??nez; Stefania Zeppetelli; Luigi Ambrosio; Josep Anton Planell; Maria Pau Ginebra

2004-01-01

474

Raman and EPR studies of calcium-phosphate glasses doped with manganese ions  

Microsoft Academic Search

The structure of xMnO·(1-x)[2.5P2O5·CaO] glass system with 1 <= x <= 10 mol% was prepared and investigated by Raman and EPR spectroscopy. The characteristic Raman bands of these glasses due to the stretching and bending vibrations were identified and analyzed by increasing of MnO content. The intensity and frequency variations for the characteristic phosphate group vibrations have been correlated with

Dana Toloman; A. R. Biris; Adriana Popa; Oana Raita; L. M. Giurgiu; I. Ardelean

2009-01-01

475

Lanthanum Oxide Effects on the Structure of Calcium Phosphate Glasses  

Microsoft Academic Search

Calcium phosphate glasses, in which part of calcium oxide was replaced by lanthanum oxide, were prepared by using the conventional melt quench method. The structures of xLa2O3 · (50-x)CaO · 50P2O5 (x = 0, 1, 3, 6, 12 mol%) samples were investigated by X-ray diffraction (XRD), Raman spectrum, Fourier transform infrared spectrum (FTIR), and differential scanning calorimetry (DSC). The results show that lanthanum oxide acts as network

Xiaofeng Liang; Guangfu Yin; Shiyuan Yang; Yuanming Lai; Junxia Wang

2011-01-01

476

The role of networking in the optical anisotropy of hot-extruded calcium phosphate glass  

Microsoft Academic Search

We have investigated the structural modifications that occur concomitantly with the generation of optical anisotropy in the binary glass with nominal starting composition 0.51(CaO)0.49(P2O5) as a result of hot-extrusion processes. Micro-Raman and X-ray-fluorescence micro-analysis have been used to map the structure and composition along the directions parallel and orthogonal to the extrusion axis, with respect to which we have detected

A. Paleari; V. N. Sigaev; N. V. Golubev; R. Lorenzi; P. D. Sarkisov

2011-01-01

477

Luna 24 origins - Some trace element constraints  

NASA Technical Reports Server (NTRS)

Luna 24 basaltic material originated in the particular volume of the lunar crust that produced Apollo 11 and Luna 16 basaltic material; it has the same Clr/P2O5 (r = residual) signature. Ru-Os contents (Barsukov et al., 1977) and a number of radiogenic age measurements place Luna 24 basalt origins stratigraphically in a layer between those from which Apollo 15 and Apollo 11 and 17 basalts were derived.

Jovanovic, S.; Jensen, K. J.; Reed, G. W., Jr.

1978-01-01

478

A model of elastically and anelastically produced temperature derivatives of acoustic wave velocities in inorganic oxide glasses  

Microsoft Academic Search

The temperature dependence of 15 MHz ultrasonic bulk wave velocity in the range 4 to 600 K has been measured in the entire range of glasses that can be prepared by mixing MoO3 with P2O5 in open crucibles. In all cases the temperature gradients are negative. However, when the contribution to the velocity variation caused by (anelastic) two-well relaxational effects

B. Bridge; N. D. Patel

1987-01-01

479

Failure of particulate bioglass to prevent experimental staphylococcal infection of open tibial fractures  

Microsoft Academic Search

range from 355 to 500 mm, consisting of 45 wt% SiO2\\/24.5 wt% Na2O\\/24.5 wt% CaO\\/6 wt% P2O5) in vivo by examining its effi- cacy in reducing the rate of infection by Staphylococcus aureus after the fixation of open tibial fractures in rabbits. An in vivo test was carried out with male rabbits split into two groups infected with S. aureus

Zong-Ping Xie; Chang-Qing Zhang; Cheng-Qing Yi; Jian-Jun Qiu; Jian-Qiang Wang; Juan Zhou

2010-01-01

480

The geology of the Florida land-pebble phosphate deposits  

USGS Publications Warehouse

The land-pebble phosphate district is on the Gulf Coastal Plain of Florida. The phosphate deposits are in the Bone Valley formation, dated Pliocene by most writers. These strata overlie the Miocene Hawthorn formation and are overlain by consolidated sands 3 to 20 feet thick. The minable phosphate deposits, called “matrix” in the district, range from a featheredge to about 50 feet in thickness and consist of phosphatic pellets and nodules, quartz sand, and montmorillonitic clay in about equal proportions. Locally the matrix displays cross-bedding and horizontal laminations, but elsewhere it is structureless. The phosphorite particles, composed largely of carbonate-fluorapatite, range in diameter from less than 0.1 mm to about 60 cm and in P2O5 content from 30 to 36 percent. Coarse-pebble deposits, containing 30 to 34 percent P2O5 are found mainly on basement highs; and fine-pebble deposits, containing 32 to 36 percent P2O5 are, are found in basement lows. Deposits in the northern part of the field contain more phosphate particles and their P2O5 content is higher than those in the southern part. The upper part of the phosphatic strata is leached to an advanced degree and consists of quartz sand and clay-sized particules of pseudowavellite and wavellite. The leached zone ranges in thickness from a featheredge to 60 feet. The origin of the land-pebble deposits is incompletely known. Possible modes of origin are a residuum of Miocene age, or a reworked residuum of Pliocene or Quaternary age.

Cathcart, J.B.; Blade, L.V.; Davidson, D.F.; Ketner, K.B.

1952-01-01

481

An effective water extraction method for the determination of plant-available soil phosphorus  

Microsoft Academic Search

Summary  A new variant of the water-extraction method for the assessment of soil phosphorus availability to the plant was recently\\u000a developed by Van der Paauw and Sissingh. The correlation between the water-extractable soil phosphate (Pw value) and the response\\u000a of the plant, measured in most cases by the P2O5 content of dry matter, was high on Dutch soil types and was

F. van der Paauw

1971-01-01

482

Energy transfer upconversion on neodymium doped phosphate glasses investigated by Z-scan technique  

NASA Astrophysics Data System (ADS)

Time-resolved Z-scan measurements were employed to characterize energy transfer upconversion on the phosphate glass matrix, named PAN (P2O5-Al2O3-Na2CO3), doped with increasing Nd3+ concentrations. It was observed a linear dependence of the upconversion parameter with the dopant agent, which indicates the presence of a static and dynamic energy transfer processes. The critical inversion density was also evaluated for the same set of samples.

Lima, W. J.; Martins, V. M.; Monte, A. F. G.; Messias, D. N.; Dantas, N. O.; Bell, M. J. V.; Catunda, T.

2013-07-01

483

Controlled-release fertilizers to increase efficiency of nutrient use and minimize environmental degradation - A review  

Microsoft Academic Search

Total world consumption of fertilizer N, P2O5, and K2O in 1990\\/1991 was 78, 37, and 26 million tons per annum, respectively, with a projected yearly increase of demand of about\\u000a 2 to 3%. Trends in crop production (maize and wheat) in the last four decades show that N application rates increased about\\u000a 15 times whereas its accumulation in grain increased

A. Shaviv; R. L. Mikkelsen

1993-01-01

484

Foam-like scaffolds for bone tissue engineering based on a novel couple of silicate-phosphate specular glasses: synthesis and properties  

Microsoft Academic Search

Glass–ceramic scaffolds mimicking the structure of cancellous bone were produced via sponge replication technique by using\\u000a a polyurethane foam as template and glass powder below 30 ?m as inorganic phase. Specifically, a SiO2-based glass of complex composition and its corresponding P2O5-based “specular” glass were used as materials for scaffolding. The polymeric sponge was thermally removed and the glass powders\\u000a were sintered

Chiara Vitale-Brovarone; Francesco Baino; Oana Bretcanu; Enrica Verné

2009-01-01

485

Agglomeration kinetics of calcium sulphate hemihydrate crystals in sulpho-phosphoric solutions  

Microsoft Academic Search

In the present study we aim at describing the agglomeration kinetics of calcium sulphate hemihydrate crystals, growing in concentrated sulpho-phosphoric solutions simulating an industrial process of phosphoric acid production. The experiments were carried out at 90°C, with 40 wt% P2O5 and different excesses in H2SO4. Population densities and supersaturation were determined by periodically removing suspension samples. Agglomeration kinetics were deduced

M. El Moussaouiti; R. Boistelle; A. Bouhaouss; J. P. Klein

1996-01-01

486

Infrared Analysis Technique for Determining Aluminum-Phosphosilicate Reaction  

Microsoft Academic Search

One of the major causes of semiconductor failure is inversion. This condition is frequently caused by the build-up of trapped charges in the vicinity of the silicon\\/silicon dioxide interface after the devices are reverse-biased at elevated temperatures. Inversion poses a severe reliability exposure, resulting in both junction and transistor leakage. A phosphosilicate layer (P2O5) introduced into the silicon dioxide structure

M. M. Nanda; E. A. Corl; S. L. Silverman

1966-01-01

487

Interactions of gamma rays with tungsten-doped lead phosphate glasses  

Microsoft Academic Search

Undoped lead phosphate glass of the composition PbO 50 mol%, P2O5 50 mol% together with samples of the same ratio doped with various WO3 contents were prepared. UV–Visible spectroscopic studies were measured out in the range 200–1100 nm before and after successive\\u000a gamma irradiation. Infrared and Raman spectroscopic measurements were carried out for the undoped and WO3-doped samples. All the prepared samples are

Fatma Hatem ElBatal; Samir Yousef Marzouk

2009-01-01

488

¿Quién puede comunicarse con el CIS?  

Cancer.gov

El Servicio de Información sobre el Cáncer del NCI puede ayudarle si usted es un paciente o superviviente de cáncer, un familiar o un amigo preocupado, un proveedor de cuidados médicos o una persona que de algún modo ha sido afectada por el cáncer.

489

Compression data on bovine bone con\\  

Microsoft Academic Search

The literature contains many measurements of the fatigue properties of compact bone, but these experimental results have been di$cult to interpret and use due to a large amount of apparent scatter: variation in the number of cycles to failure for a given cyclic stress or strain range. Recently Taylor (1998a, Journal of Orthopaedic Research, 16, 163}169) showed that much of

David Taylor; Fergal O'Brien; Adriele Prina-Mello; Colm Ryan; Peter O'Reilly; T. Clive Lee

490

Natural-born con artists and counterfeiters  

PubMed Central

Deception is ubiquitous in plant and animal kingdoms and is widely thought to provide selective advantages to the individual and evolutionary success to the species. Mimicry, a form of deception whereby an individual imitates their model to advantage by closely resembling their behavior or appearance, is particularly well documented and represented by the peripheral eyespots seen on the wings of many butterfly species. The significance of butterfly eyespots has been convincingly demonstrated to serve as an anti-predatory function either by imitation of a predator’s own dangerous enemies (intimidation hypothesis) or by deflecting predator strikes toward less-vital parts of the body (deflection hypothesis). A convincing and compelling explanation in butterflies, the functional role of eyespots as anti-predatory devices has become a widely held and firmly entrenched belief that has been freely adopted into other systems. Here we comment on a recent paper that demonstrates a vastly different role for eyespots, that of intra-specific male-male competition, and make the point that even long-held beliefs need to be tested and challenged under different contexts if we are not to be deceived ourselves. PMID:23986808

Depczynski, Martial; Gagliano, Monica

2013-01-01

491

The Pros and Cons of Petroleum Agreements.  

ERIC Educational Resources Information Center

A mineral agreements expert discusses the options open to tribes, from the most standard lease form to arrangements as yet untried by Indian Nations. Discussion covers 18 basic provisions for inclusion in agreements, tax considerations, and basic forms of petroleum agreements (leases, joint ventures, production sharing, and service contracts).…

Lipton, Charles J.

1980-01-01

492