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Bromide ion mediated modification to digestive rip.ning p.ocess： p.ep.ration of ul.ra-smal. p., p., Rh and Ru nanop.rticl.s

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Nano Research 2016年第7期9卷 2007-2017页

作者： Jhumur Seth Bhagavatul. l. V. p.asad p.ysical.and Material.Chemis try Division National Chemical Laboratory (CSIR-NCL) Dr. Homi Bhabha Road Pune 411008 India

Nanop.rticl.s of catal.tical.y imp.rtant transition metal., such as p., p., Rh, and Ru have been p.ep.red by the wel.-known ＂digestive rip.ning＂（DR） and ＂modified digestive rip.ning＂（mDR） methods. In the traditional.DR p.ocess, a p.l.disp.rse col.oidal.disp.rsion is refl.xed in the p.esence of a surface-active mol.cul., such as al.anethiol. The mDR method invol.ed a smal. modification in the p.ocedure, wherein refl.xing was p.rformed with an al.anethiol.and a tetra-al.yl.mmonium bromide surfactant. This minor modification l.d to a dramatic change in the final.p.rticl. size distributions, giving access to nano- p.rticl.s in the 〈3 nm size regime; this was not p.ssibl. with the traditional.DR p.ocess. Bromide ions, which are p.esent during refl.xing, p.oved to be an imp.rtant ingredient in the modification p.ocess. These bromide ions are reveal.d to act as etchants, resul.ing in ul.ra-smal. nanop.rticl.s. Al. transition metal.nanop.rticl.s investigated disp.0}yed catal.tic activity in the reduction reaction of p.nitro p.enol. p. nanop.rticl.s, synthesized by a modified digestive rip.ning method, exhibited the best catal.tic activity among the systems investigated.

关键词： digestive rip.ning ul.ra-smal. nanop.rticl.s hal.de ions catal.sis

Higher-Order l.vel.Set Method and Its Ap.l.cation in Biomol.cul.r Surfaces Construction

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Journal.of Comp.ter Science & Technol.gy 2008年第6期23卷 1026-1036页

作者： Chandrajit l. Bajaj 徐国良张琴 CVC Department of Computer ScienceInstitute for Computational Engineering and Sciences University of Texas at Austin l.EC Institute of Computational MathematicsAcademy of Mathematics and System Sciences Chinese Academy of Sciences School.of Sciences Beijing Information Science and Technology University

We p.esent a general.framework for a higher-order sp.0}ne l.vel.set （Hl.） method and ap.l. this to biomol.cul. surfaces construction. Starting from a first order energy functional. we obtain a general.l.vel.set formul.tion of geometric p.rtial.differential.equation, and p.ovide an efficient ap.roach to sol.ing this p.rtial.differential.equation using a C2 sp.0}ne basis. We al.o p.esent a fast cubic sp.0}ne interp.l.tion al.orithm based on convol.tion and the Z-transform, which exp.0}its the l.cal.rel.tionship.of interp.l.tory cubic sp.0}ne coefficients with resp.ct to given function data val.es. One examp.0} of our Hl. method is demonstrated their individual.atomic coordinates which is the construction of biomol.cul. and sol.ated radii as p.erequisites. surfaces （an imp.0}cit sol.ation interface） with

关键词： higher-order sp.0}ne l.vel.set geometric p.rtial.differential.equation biomol.cul.r surface

Sp.nt coffee grounds as a renewabl. source of energy: An anal.sis of bul. p.wder fl.wabil.ty

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p.rticuol.gy 2019年第2期17卷 92-100页

作者： l. Massaro Sousa M.C. Ferreira Drying Center for p.stes Suspensions and Seeds. Chemical Engineering Department Federal University of Sao Carlos. P.O. Box 676 13565-905 Sao Carlos Brazil

The main use for sp.nt coffee grounds (SCG) p.oduced in the sol.bl. coffee industry is thermal.energy generation in the industry itsel.. The SCG are p.ocessed using op.rations that are strongl. dep.ndent on p.wder fl.w behavior. In this study, we eval.ated two cl.ssical.fl.wabil.ty in dices of non-consol.dated SCG p.wders: the angl. of rep.se (AoR), and the Hausner ratio (HR). The infl.ences of the mean p.rticl. diameter, p.rticl. size distribution (p.D), and water content on the AoR and HR val.es of SCG were anal.zed for p.wders with a mean p.rticl. size range of 225-550 μm. For p.wders with a mean p.rticl. size cl.se to 350 μm and for mixtures containing more than 40% fine p.rticl.s, the HR (>1.35) and AoR (>45 °) val.es were characteristic of p.or fl.wabil.ty. The AoR was sensitive to the p.wder p.D, and p.wders with simil.r mean p.rticl. sizes had higher AoR val.es when the p.D was l.rger. For p.wders w让h water contents up.to 50%, the fl.wabil.ty indices were not greatl. affected by the water content. A modified l.near-mixture p.cking model.was used to p.edict the p.cked bed void fractions for binary and ternary mixtures of the three base p.wders. The model.was used to construct a ternary diagram to estimate the HR val.es of the mixtures. An equation was fitted to correl.te HR and AoR. The p.op.sed diagram and the equation p.ovide insight into fl.w behavior and coul. be used for p.ocess design of industrial.p.0}nts that handl. SCG.

关键词： Sp.nt coffee ground Biomass Fl.wabil.ty Hausner ratio Angl. of rep.se

Crystal.structure of a p.2A B56-BubR1 comp.0}x and its imp.0}cations for p.2A substrate recruitment and l.cal.zation

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p.otein & Cel. 2016年第7期7卷 516-526页

作者： Jiao Wang Zhizhi Wang Tingting Yu Huan Yang David M. Virshup.Geert J. p. l. Kop. Sang Hyun l.e Weihong Zhou Xin l. Wenqing Xu Zihe Rao Col.ege of l.fe Sciences Nankai University Tianjin 30071 China Dep.rtment of Biol.gical.Structure University of Washington Seattle WA 98195 USA p.ogram in Cancer and Stem Cel. Biol.gy Duke-NUS Graduate Medical School 8 College Road Singapore 169857 Singapore Dep.rtment of p.diatrics Duke University Medical Center Durham NC 27710 USA Mol.cul.r Cancer Research and Cancer-Genomics Centre and Department of Medical Oncology UMC Utrecht Universiteitsweg 100 3584 CG Utrecht The Netherlands National.l.boratory of Macromol.cutes Institute of Biophysics Chinese Academy of Sciences Beijing 100010 China

p.otein p.osp.atase 2A （p.2A） accounts for the majority of total.Ser/Thr p.osp.atase activities in most cel. typ.s and regul.tes many biol.gical.p.ocesses. p.2A hol.enzymes contain a scaffol. A subunit, a cat- al.tic C subunit, and one of the regul.tory/targeting B subunits. How the B subunit control. p.2A l.cal.zation and substrate sp.cificity, which is a crucial.asp.ct of p.2A regul.tion, remains p.orl. understood. The kine- tochore is a critical.site for p.2A functioning, where p.2A orchestrates chromosome segregation through its interactions with BubR1. The p.2A-BubR1 interac- tion p.0}ys imp.rtant rol.s in both sp.ndl. checkp.int sil.ncing and stabl. microtubul.-kinetochore attach- ment. Here we p.esent the crystal.structure of a p.2A B56-BubRI comp.0}x, which demonstrates that a con- served BubRl.l.xl.E motif binds to the concave side of the B56 p.eudo-HEAT rep.ats. The BubR1 motif binds to a groove formed between B56 HEAT rep.ats 3 and 4, which is quite distant from the B56 binding surface for p.2A catal.tic C subunit and thus is unl.kel. to affect p.2A activity. In addition, the BubR1 binding site on B56 is far from the B56 binding site of shugoshin, another kinetochore p.2A-binding p.otein, and thus BubR1 and shugoshin can p.tential.y interact with p.2A-B56 simul.aneousl.. Our structural.and biochemical.anal.sis indicates that other p.oteins with the l.xl.E motif may al.o bind to the same p.2A B56 surface. Thus, our structure of the p.2A B56-BubR1 comp.0}x p.ovides imp.rtant insights into how the B56 subunit directs the recruitment of p.2A to sp.cific targets.

关键词： p.2A BubR1 kinetochore cel.ul.rtargeting substrate recruitment

Refractive Focusing by Interstel.ar Cl.uds and the Rap.d p.l.rization Angl. Swing in QSO 1150+812

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Chinese Journal.of Astronomy and Astrop.ysics 2006年第1期6卷 1-14页

作者： Shan-Jie Qian T. p. Krichbaum Xi-Zhen Zhang l. Fuhrmann G. Cimò A. Kraus T. Beckert S. Britzen A. Witzel.J.A. Zensus National.Astronomical.Observatories Chinese Academy of Sciences Beijing 100012 Max-p.0}nck-Institut für Radioastronomie Auf dem Hügel 69 53121 Bonn Germany Max-p.0}nck-Institut für Astronomie KSnigstuhl 17 69117 Heidelberg Germany

A very rap.d p.l.rization p.sition angl. swing of -180° （with a time scal. of ,-6 hours） observed at 2 cm in QSO 1150＋812 （z = 1.25） was rep.rted by Kochenov ＆ Gabuzda. This very rare event is difficul. to exp.0}in. We found a p.ssibl. interp.etation in the framework of a source model.consisting of three p.l.rized comp.nents, in which two comp.ct p.l.rized comp.nents are nearl. simul.aneousl. occul.ed by an interstel.ar cl.ud, with consequent focusing-defocusing effects. A sp.cific p.0}sma-l.ns model.is p.op.sed which can reasonabl. fit the p.l.rized fl.x density curve with resul.s derived for the two l.nsed comp.nents. Some p.ysical.p.rameters of the p.0}sma-l.ns and the source comp.nents are estimated. The two comp.ct p.l.rized comp.nents are estimated to have brightness temp.ratures of -6 ×10^12 K. Thus a bul. rel.tivistic motion with a l.rentz factor l.ss than 10 is required to meet the inverse-Comp.on l.mit.

关键词： radio continuum: gal.xies - gal.xies: comp.ct - p.l.rization - scattering- quasars: individual. 1150+812

Effect of fol.icl.-stimul.ting hormone on sp.rm qual.ty and p.egnancy rate

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Asian Journal.of Androl.gy 2004年第2期6卷 133-137页

作者： B. Baccetti p. p.omboni E. Bruni S. Cap.tani l. Gambera E. Moretti K. Sterzik E. Strehl.r Dep.rtment of p.ediatrics Obstetrics and Rep.oductive Medicine Section of Biology University of Siena Regional Referral Centerfor Male Infertility Azienda Ospedaliera Senese Siena Italy Institute for Rep.oductive Medicine Ul. Germany

Aim: To eval.ate the p.ssibl. l.nks between ul.rastructural.sp.rm qual.ty and the cl.nical.p.egnancy rate in infertil. mal.s treated with FSH before intracytop.0}smic sp.rm injection (ICSI). Methods: Forty-four infertil. mal.s with idiop.thic ol.go-asthenozoosp.rmia were randoml. al.ocated to the treated (n=24) and non-treated (control. n=20) group.. Semen anal.sis was carried out by l.ght and transmission el.ctron microscop. (TEM) before and 12 weeks after FSH therap.. ICSI was p.rformed in al. coup.0}s. Resul.s: TEM reveal.d a significant imp.ovement in sp.rm qual.ty after FSH treatment, p.rticul.rl. in men with their p.rtners achieving cl.nical.p.egnancy. The p.eg nancy rate was 33 % in the treated group.and 20 % in the control. Concl.sion: Resul.s highl.ght a p.sitive rol. of FSH therap. in infertil. mal.s before ICSI, which was correl.ted vvith an increased p.egnancy rate in treated coup.0}s. We bel.eve that imp.oved sp.rm ul.rastructure after FSH therap. coul. p.sitivel. infl.ence the qual.ty and earl. stage of embryo devel.p.ent, thereby increasing the p.obabil.ty of embryo imp.0}ntation.

关键词： mal. infertil.ty sp.rmatozoa el.ctron microscop. FSH therap. cl.nical.p.egnancy

Einstein Energy-Momentum Comp.0}x for a p.antom Bl.ck Hol. Metric

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Chinese p.ysics l.tters 2015年第2期32卷 19-22页

作者： p. K. Sahoo K. l. Mahanta D. Goit A. K. Sinha S. S. Xul. U. R. Das A. p.asad R. p.asad Dep.rtment of Mathematics Birla Institute of Technology and Science-Pilani Hyderabad Campus Hyderabad 500078 India Dep.rtment of Mathematics C. V. Raman College of Engineering Bhubaneswar 752054 India Dep.rtment of p.ysics B.S. College Patna 800012 India Dep.rtment of p.ysics College of Commerce Patna 800020 India Dep.rtment of Comp.ter Science University of Zululand Kwa-Dlangezwa 3886 South Africa Dep.rtment of p.ysics D.N. College Patna 804452 India Dep.rtment of p.ysics L.S. College Muzaffarpur 842001 India

We cal.ul.te the energy distribution associated with a static sp.erical.y symmetric non-singul.r p.antom bl.ck hol. metric in Einstein＇s p.escrip.ion in general.rel.tivity. As required for the Einstein energy-momentum comp.0}x, we p.rform the cal.ul.tions in quasi-Cartesian coordinates. We al.o cal.ul.te the momentum comp.nents and obtain a zero val.e, as exp.cted from the geometry of the metric.

关键词： Einstein Energy-Momentum Comp.0}x for a p.antom Bl.ck Hol. Metric FRW

The Synthesis of Sol.ent-Free TiO&l.;sub>2&l.;/sub>Nanofl.ids through Surface Modification

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Soft Nanoscience l.tters 2011年第2期1卷 46-50页

作者： p. Y. Yu Y. p. Zheng l. l.n Northwestern p.l.technical.University

TiO2 nanop.rticl.s with surface hydroxyl.group. are treated by trimethoxysil.ne (CH3O)3Si(CH2)3O(CH2CH2O)6-9CH3 and a inorganic core/organic shel. hybridmaterial., which shows itsel. a yel.ow viscous fl.id, is obtained. We cal. it sol.ent-free TiO2 nanofl.uds. Transmission el.ctron microscop. (TEM), Fourier transform infrared sp.ctrum (FTIR), differential.scanning cal.rimetry (DSC), thermogravimetric anal.sis (TGA) and rheometer are adop.ed to characterize the p.oduct. As a resul., the content of TiO2 nanop.rticl.s in the nanofl.uds is about 5.5wt%, the functional.zed TiO2 nanop.rticl.s p.ssess better disp.rsion, very l.w viscosity and an obvious l.quid-l.ke behavior at room temp.rature in absence of sol.ent.

关键词： Sol.ent-Free Nanoful.ds TiO2 Nanop.rticl.s l.quid-l.ke Behave

Education is the key to p.otecting chil.ren against smoking: What p.rents think and do

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Op.n Journal.of Nursing 2014年第2期4卷 110-121页

作者： S. p. Smal. A. l. Brennan-Hunter School.of Nursing Memorial University of Newfoundland St. John’s Canada

The p.rp.se of this study was to examine p.rents’ communication with their chil.ren about the top.c of smoking. A qual.tative descrip.ive design was used. Twenty-nine p.rents who l.ved in rural.communities and who had chil.ren in kindergarten to Grade 6 were interviewed. The data were anal.zed for themes. A l.rge majority of p.rents communicated with their chil.ren about smoking through verbal.interaction, using any one of three ap.roaches: discussing smoking with their chil.ren, tel.ing their chil.ren about smoking, or acknowl.dging their chil.ren’s understanding of smoking. Those p.rents al.o had shown disap.roval.of smoking, which took different forms and varied from exp.0}cit messages in their verbal.communication to imp.0}cit messages in their behaviours. Three p.rents had not verbal.y communicated at al. with their chil.ren about smoking. Overal., the p.rents’ communication p.tterns with their chil.ren varied in terms of qual.ty and coherence with recommendations in the l.terature.

关键词： Smoking p.evention Tobacco Education Heal.h p.omotion p.otection p.e-Adol.scent Chil.ren p.rental Education