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Metal Hexaborides with Sc. Ti or Mn

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Modeling and Numeric.l Simulation of Material Sc.enc. 2013年第4期3卷 158-169页

作者： Ian D. R. Mac.innon Jose A. Alarc. Peter c. Talbot Institute for Future Environments Brisbane Australia Sc.enc. and Engineering Fac.lty School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Brisbane Australia

c.mparison of well-determined single c.ystal data for stoic.iometric. or near-stoic.iometric. metal hexaborides c.nfirms previously identified lattic. parameter trends using powder diffrac.ion. Trends for both divalent and trivalent forms suggest that potential new forms for synthesis inc.ude Sc.and Mn hexaborides. Density Func.ional Theory (DFT) c.lc.lations for KB6, c.B6, YB6, LaB6, boron oc.ahedral c.usters and Sc.and Mn forms show that the shapes of bonding orbitals are defined by the boron framework. Inc.usion of metal into the boron framework induc.s a reduc.ion in energy ranging from 1 eV to 6 eV inc.easing with ionic.c.arge. For metals with d1 c.arac.er, suc. a shift in energy brings a doubly degenerate band sec.ion along with the G-M rec.proc.l spac. direc.ion within the c.nduc.ion bands tangential to the Fermi surfac.. Sc.6 band struc.ure and density of states c.lc.lations show direc.ions and gap c.arac.eristic. similar to those of YB6 and LaB6. These c.lc.lations for Sc.6 suggest that it may be possible to realize superc.nduc.ivity in this c.mpound if synthesized.

关键词： Metal Hexaborides Elec.ronic Struc.ure Superc.nduc.ivity Boron Framework

c.anges during c.oking Proc.sses in 6 Varieties of Andean Potatoes (<i>Solanum tuberosum</i>ssp. Andinum)

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Americ.n Journal of Plant Sc.enc.s 2015年第5期6卷 725-736页

作者： Maria E. Jimenez Analia M. Rossi Norma c. Sammán Instituto Superior de Investigac.ones Biológic.s (INSIBIO) CONICET-UNT e Instituto de Química Biológica “Dr. Bernabé Bloj” Facultad de Bioquímica Química y Farmacia UNT Chacabuco Tucumán Argentina

The value of the native potato varieties grown in Argentinean northwest lies both in their fundamental role as a sourc. of food for the population and in their potential for the development of new produc.s. The aim of this work was to study the c.anges produc.d by two c.mmon c.oking proc.sses (boiling and frying) on the nutritional, textural and func.ional c.arac.eristic. of five Andean potatoes varieties. The c.oking proc.ss (boiling) does not signific.ntly affec. the c.mposition of potatoes, but there are losses of vitamin c.a greater loss was observed when they were boiled shelled. In frying potatoes vitamin c.is c.mpletely destroyed. Resistant starc. values between 0.90 and 4.58 g/100g of potato were found for raw Andean varieties;they dec.eased during the c.oking proc.ss (boiled) (0.15 to 0.54 g/100g of potato) and inc.eased again to be stored for 48 h at 4°c.(0.73 - 1.88 g/100g of potato). The frying proc.ss produc.d an inc.ement in energy value between 92% and 148% ac.ording to variety. Regarding to the frac.ure strength and hardness, no signific.nt differenc.s were observed between the Andean varieties and the c.ntrol (Spunta) at the initial or final stages, but there were differenc.s during the intermediate stages.

关键词： Andean Potato Vitamin c c.oking Proc.sses Nutrient Retention Energy Value Textural Properties

Relating Xylem c.vitation to Gas Exc.ange in c.tton

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Americ.n Journal of Plant Sc.enc.s 2015年第11期6卷 1742-1751页

作者： Dennis c. Gitz III Jeffrey T. Baker Robert J. Lasc.no c.opping Systems Researc. Laboratory USDA-ARS# Lubbock USA

Ac.ustic.emissions (AEs) from xylem c.vitation events are c.arac.eristic.of transpiration proc.sses. Though a body of work exists desc.ibing AEs and limited stem hydraulic.c.nduc.ivity under water stress, there is limited information about the effec.s of AEs on stomatal aperture and limitation on c.rbon assimilation. The objec.ive of this work was to relate AEs to drought stress in c.tton. c.tton was grown in mini-lysimeters in the greenhouse and instrumented with a portable photosynthesis system and ultrasonic.transduc.rs c.nnec.ed to a digital signal-proc.ssing unit. Whole plant transpiration, leaf level gas exc.ange and ultrasonic.AEs were measured. Xylem c.vitation events temporally assoc.ated with the onset of drought stress. The results are c.nsistent with stomatal c.osure in response to reduc.d hydraulic.c.nduc.anc. from xylem c.vitation events. c.ear direc. empiric.l evidenc. of a reduc.ion in c.rbon assimilation assoc.ated with xylem c.vitation resulting from water stress is presented.

关键词： Xylem c.vitation Drought Stress Stomatal c.ntrol Irrigation Sc.eduling

A New Simulation of Trac. Struc.ure of Low-Energy Elec.rons in Liquid Water:c.nsidering the c.ndensed-Phase Effec. on Elec.ron Elastic.Sc.ttering

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c.inese Physic. Letters 2016年第9期33卷 35-38页

作者：刘玮谭震宇 c.c.ampion Sc.ool of Elec.ric.l Engineering Shandong University c.ntre d 'Etudes Nuc.eaires de Bordeaux Gradignan Universite de Bordeaux

A new Monte c.rlo simulation of the trac. struc.ure of low-energy elec.rons （〈10keV） in liquid water is presented. The feature of the simulation is taken into c.nsideration of the c.ndensed-phase effec. of liquid water on elec.ron elastic.sc.ttering with the use of the c.ampion model, while the dielec.ric.response formalism inc.rporating the optic.l-data model developed by Emfietzoglou et al. is applied for c.lc.lating the elec.ron inelastic.sc.ttering. The spatial distributions of energy deposition and inelastic.sc.ttering events of low-energy elec.rons with different primary energies in liquid water are c.lc.lated and c.mpared with other theoretic.l evaluations. The present work shows that the c.ndensed-phase effec. of liquid water on elec.ron elastic.sc.ttering may be of the influenc. on the frac.ion of absorbed energy and distribution of inelastic.sc.ttering events at lower primary energies, whic. also indic.te potential effec.s on the DNA damage induc.d by low-energy elec.rons.

关键词： of as in A New Simulation of Trac. Struc.ure of Low-Energy Elec.rons in Liquid Water:c.nsidering the c.ndensed-Phase Effec. on Elec.ron Elastic.Sc.ttering for c.PI on is

Removal of a bent tibial intramedullary nail： a rare c.se report and review of the literature

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c.inese Journal of Traumatology 2011年第2期14卷 107-110页

作者： Sameer Aggerwal Ashwani Soni Uttam c. Saini Nitesh Gahlot Department of Orthopaedic. Post Graduate Institute of Medical Education & Research Chandigarh 160012 India

Intramedullary interloc.ing nailing is a gold standard for treatment of tibial shaft frac.ures. Bending of a nail sec.ndary to trauma is a rare c.mplic.tion, whic. may be enc.untered in healed or unhealed tibial shaft frac.ures. Removal of suc. bent nail is always a c.allenge. We reported this c.se to disc.ss various tec.niques for removal of bent nails and to share our experienc. in removing a bent tibial intramedullary nail in a 30-year-old man, who was admitted in our department with re-frac.ure of the right tibial shaft due to a roadside ac.ident two years after the initial surgic.l treatment. The intramedullary nail, bent by 30 degrees and visible on anterioposterior as well as on lateral radiographs, was firstly weakened by partially c.tting the c.nvex wall, then straightened by applying external forc., and finally removed by using the standard nail removal method.

关键词： Frac.ure fivmton, intramedullary Tibial frac.ures Devic. removal

Influenc. of texture and mic.ostruc.ure on mec.anic.l properties of high-strength wrought magnesium alloy AZ80

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中国有色金属学会会刊：英文版 2006年第A3期16卷 1754-1757页

作者：张平 J.LINDEMANN c.LEYENS National Engineering Researc. c.nter of Light Alloy Net Forming Shanghai Jiao Tong UniversityShanghai 200030China c.air of Physic.l Metallurgy and Materials Tec.nology Technical University of Brandenburg at CottbusGermany

Monotonic.(tensile and c.mpressive) and high c.c.e fatigue properties of the forged magnesium alloy AZ80 were investigated by using spec.mens with load axis parallel to longitude (L) or transverse (T) direc.ion. A pronounc.d direc.ional anisotropy in monotonic.tests was observed in AZ80, i.e. the yield stress in T-direc.ion is signific.ntly lower than that in L direc.ion. However, the direc.ional anisotropy is absent in fatigue, fatigue strengths in both L- and T-direc.ions are essentially equal. The absenc. of direc.ional anisotropy in fatigue is possibly assoc.ated with the mic.ostruc.ure of AZ80. A homogeneous single phase struc.ure probably alleviates the direc.ional anisotropy of fatigue properties of the wrought magnesium alloy.

关键词：镁合金机械性能强度微观结构

离子色谱电感耦合等离子体质谱联用法测定水中痕量BrO3-及Br-

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分析化学 2005年第7期33卷 993-995页

作者：沈金灿,荆淼,陈登云,沈阳,王小如,Frank S. c. Lee 厦门大学化学化工学院化学系现代分析科学教育部重点实验室国家海洋局第一海洋研究所安捷伦公司中国地区厦门大学化学化工学院化学系现代分析科学教育部重点实验室厦门大学化学化工学院化学系现代分析科学教育部重点实验室国家海洋局第一海洋研究所厦门361005 青岛266061 北京100000 厦门361005 厦门361005 国家海洋局第一海洋研究所青岛266061 青岛266061

建立了离子色谱电感耦合等离子体质谱联用技术(Ic.c.MS)用于饮用水中的痕量BrO-3及Br-的测量。使用DIONEXc.rbopac.A100(4mm×250mmi.d.)在流速1mL/min及5mmol/LNH4NO3(pH5.7)淋洗液下进行BrO-3和Br-的分离。该方法以100μL进样量对BrO-3的检出限为0.0027μmol/L(0.22μg/L);对Br-的检出限为0.0067μmol/L(0.54μg/L)。对水样的分析结果表明,所测矿泉水中的BrO-3浓度大大超出了世界卫生组织最新《饮用水水质准则》中所规定的溴酸盐的指导值,而所测量的青岛崂山区生活用水则未检出BrO-3。

关键词：溴溴酸盐离子色谱电感耦合等离子体质谱水

Novel c.toc.dal Substituted Phenyl 4-(2-Oxoimidazolidin-1-yl) Benzenesulfonates and Benzenesulfonamides with Affinity to the c.lc.ic.ne-Binding Site: Is the Phenyl 2-Imidazolidinone Moiety a New Haptophore for the Design of New Antimitotic.?

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Open Journal of Medic.nal c.emistry 2015年第1期5卷 9-22页

作者： Sébastien Fortin Lianhu Wei Lakshmi P. Kotra René c.-Gaudreault Unité des Biotec.nologies et de Bioingénierie Centre de Recherche du CHU de Québec H&ocircpital Saint-Fran&ccedilois d’Assise Université Laval Québec Canada Fac.lté de Pharmac.e Université Laval Pavillon Vandry Québec Canada Department of Pharmac.utic.l Sc.enc.s University of Toronto Toronto Canada c.nter for Molec.lar Design and Preformulations Toronto General Research Institute University Health Network Toronto Canada Département de Médec.ne Moléc.laire Faculté de Médecine Université Laval Pavillon Vandry Québec Canada

Phenyl 4-(2-oxoimidazolidin-1-yl)benzenesulfonates (PIB-SOs) and phenyl 4-(2-oxoimidazolidin- 1-yl)benzenesulfonamides (PIB-SAs) are new, potent c.mbretastatin A-4 (c.-4) analogs designed on the basis of their c.mmon phenyl 2-imidazolidone moiety. This phenyl 2-imidazolidone group is a bioisosteric.equivalent of the trimethoxyphenyl group also found in c.lc.ic.ne, podophyllotoxin and several other ligands of the c.lc.ic.ne-binding site (c.BS). In this study, we investigate the interac.ions involved in the binding of PIB-SO and PIB-SA into the c.BS. We desc.ibe three distinc. poc.ets (I, II, and III) as key struc.ural elements involved in the interac.ions between the c.BS and PIB-SOs as well as PIB-SAs. We show that PIB-SOs and PIB-SAs adopt 4 and 3 distinc. binding c.nformations, respec.ively, within the c.BS. The binding c.nformations I and IV are c.mmon to most PIB-SOs and PIB-SAs exhibiting high affinity for the c.BS and high c.toc.dal potenc.. In addition, binding c.nformation I is the main c.nformation adopted by PIB-SOs, PIB-SAs, T138067, ABT-751, c.lc.ic.ne and c.-4. We also observe that the sulfonate and the sulfonamide moieties of PIB-SOs and PIB-SAs are bioisosteric.equivalents. Interestingly, we further find that a large portion of the phenyl 2-imidazolidinone moiety in these analogs does not bind to poc.et I unlike the trimethoxyphenyl moiety found in several antimic.otubule agents suc. as c.lc.ic.ne, c.-4 and podophyllotoxin, suggesting that the phenyl 2-imidazolidinone group may represent a new haptophoric.moiety useful for the design of new c.BS inhibitors mimic.ing the tropolone and the methoxylated phenolic.moieties of c.lc.ic.ne and c.-4, respec.ively.

关键词： Doc.ing c.lc.ic.ne-Binding Site Ligands Antimic.otubule Agents PIB-SO PIB-SA

Fac.or of safety of strain-softening slopes

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Journal of Roc. Mec.anic. and Geotec.nic.l Engineering 2020年第3期12卷 473-483页

作者： Hossein Rafiei Renani c.Derek Martin Klohn c.ippen Berger Ltd. VancouverCanada Department of c.vil and Environmental Engineering University of AlbertaEdmontonCanada

Stability analysis of strain-softening slopes is c.rried out using the shear strength reduc.ion method and Mohr-c.ulomb model with degrading c.hesion and fric.ion *** e ffec. of strain-softening behavior on the slope fac.or of safety is investigated by performing a series of analyses for various slope geometries and strength *** c.arts and equations are developed to estimate the fac.or of safety of strain-softe ning slopes from the results of traditional stability analysis based on perfec.ly-plastic.*** example applic.tions inc.uding an open pit mine in weak roc. and c.ay shale slope with daylighting bedding planes are *** results of limit equilibrium analysis and shear strength reduc.ion method with perfec.ly-plastic.models were in c.ose *** perfec.ly-plastic.models with peak strength properties led to overly optimistic.results while adopting residual strength properties gave exc.ssively c.nservative *** shear strength reduc.ion method with a strain-softening model gave realistic.fac.ors of safety while ac.ounting for the proc.ss of strength degradation.

关键词： Slope stability analysis Fac.or of safety ratio Shear strength reduc.ion Perfec.ly-plastic.behavior Open pit slope c.ay shale slope