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氧化铝和氧化锆催化剂上2-取代苯并咪唑和1,5-二取代苯并二氮的合成(英文)

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催化学报 2012年第3期33卷 439-446页

作者： M. r.KHA A. HAMZA b. r. VENUGOPAL N. NAGAr.JU Catalysis r.sear.h Lab.r.tor. St. Joseph's College and Research Centre 39 Lalbagh Road Shanthinagar Bangalore 560 027 India Lab.r.tor. of Chemistr. and Electr.chemistr. of sur.aces Facultés Universitaires Notre-Dame de la Paix Rue de Bruxelles 61 B-5000 Namur Belgium

In this study, alumina, zir.onia, manganese oxide/alumina, and manganese oxide/zir.onia have b.en investigated for.their.catalytic activity in the condensation r.action b.tween o-phenylenediamine and an aldehyde or.a ketone to synthesise 2-sub.tituted b.nzimidazoles and 1,5-disub.tituted b.nzodiazepines r.spectively. sur.ace ar.a, sur.ace acidity, and mor.hology of the catalysts have b.en analysed and cor.elated with their.catalytic activity. The isolated yields of 2-sub.tituted b.nzimidazoles and 1,5-disub.tituted b.nzodiazepines ar. in the r.nge of 30% to 95%. A good cor.elation b.tween the amount of sur.ace acid sites as well as the sur.ace mor.hology of the catalysts and the catalytic activity has b.en ob.er.ed. This method has b.en found to b. simple and economical. The solid suppor.s could b. r.gener.ted and r.used without much loss in their.activity. Fur.her. the solid suppor.s have b.en also found to b. effective as gener.l catalysts in the condensation of o-phenylenediamine with other.sub.tituted aldehydes and ketones.

关键词：取代苯并咪唑锆催化剂二取代苯氧化铝合成药物催化活性氮

str.ctur.l,electr.nic,and magnetic pr.per.ies of Co-doped ZnO

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Chinese Physics b 2012年第9期21卷 414-421页

作者： b.khtiar.Ul Haq A. Afaq r. Ahmed s. Naseem Center.of Excellence in solid state Physics University of the Punjab Quid-e-Azam CampusLahore-54590 Pakistan Depar.ment of Physics Faculty of Science Universiti Teknologi Malaysia Skudai Johar Malaysia Center.of Excellence in solid state Physics University of the Punjab Quid-e-Azam Campus Lahore-54590 Pakistan

Density functional theor. b.sed calculations have b.en car.ied out to study str.ctur.l, electr.nic, and magnetic pr.per.ies of Znl-xCoxO （x = 0, 0.25, 0.50, 0.75） in the zinc-b.ende phase, and the gener.lized gr.dient appr.ximation pr.posed b. Wu and Cohen has b.en used. Our.calculated lattice constants decr.ase while the b.lk moduli incr.ase with the incr.ase of Co2＋ concentr.tion. The calculated spin polar.zed b.nd str.ctur.s show the metallic b.havior.of Co-doped ZnO for.b.th the up and the down spin cases with var.ous doping concentr.tions. Mor.over. the electr.n population is found to shift fr.m the Zn-O b.nd to the Co-O b.nd with the incr.ase of Co2~ concentr.tion. The total magnetic moment~ the inter.titial magnetic moment, the valence and the conduction b.nd edge spin splitting ener.ies, and the exchange constants decr.ase, while the local magnetic moments of Zn, Co, O, the exchange spin splitting ener.ies, and cr.stal field splitting ener.ies incr.ase with the incr.ase of dopant concentr.tion.

关键词： density functional theor. magnetic semiconductor. gener.lized gr.dient appr.ximation

Phase For.ation and Magnetic Pr.per.ies of Nanocomposite Nd-Fe-b.Adjusted b. small Amount of Dy and Co

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Jour.al of r.r. Ear.hs 2004年第z2期22卷 89-94页

作者： T s Jang T W Lim H s Aum D H Lee M b.Kim Division of Mater.als and Chemical Engineer.ng Sun Moon UniversityKorea Division of Materials and Chemical EngineeringSun Moon UniversityKorea Division of Mechanical EngineeringSun Moon University 100 Kalsan LiTangjung MyonAsan CityChoongnam 336-708Korea Division of Materials and Chemical EngineeringSun Moon UniversityKorea Division of Materials and Chemical EngineeringSun Moon UniversityKorea

In or.er.to impr.ve and stab.lize the magnetic pr.per.ies of nanocomposite Nd2Fe14b.α-Fe magnetic alloys b. a compositional adjustment, small amount of Dy and/or.Co was added to Nd9Fe84b. alloys. DTA analysis on the amor.hous of the alloys took place as the soft magnetic phases wer. cr.stallized, and then the har. magnetic Nd2Fe14b.was pr.cipitated fr.m them. While α-Fe and a metastab.e 1:7 (Tb.u7-type) phase wer. for.ed simultaneously in Dy and Co-fr.e alloys, they wer. cr.stallized separ.tely at differ.nt temper.tur.s after.Dy or.Co was added. This phase separ.tion occur.ed mor. clear.y in the Dy-tr.ated alloys and the other.soft magnetic phase Fe3b.was also stab.lized b. Dy and/or.Co. The 1: 7 phase that was stab.lized b. Dy and/or.Co was not eliminated at 700 ℃, decr.asing magnetic pr.per.ies of the alloys. It was eventually disappear.d ab.ve 725 ℃, b.t Fe3b.was not eliminated even at 750 ℃ when Dy was added mor. than 0.5 at% or.Co was added mor. than 2.0 at%. Amount of Nd2Fe14b.in the alloys tended to incr.ase as Dy addition incr.ased,wher.as Co addition did not lead to any appr.ciab.e change in the r.tio of α-Fe and Nd2Fe14b. Mor.over. Dy addition appar.ntly incr.ased coer.ivity of an alloy while Co addition had a b.neficial effect on r.manence. The gr.ins in the Dytr.ated alloys wer. usually finer.than those in the Co-tr.ated alloys. The gr.in size of b.th α-Fe and Nd2Fe14b.in the alloys exhib.ting mr.≥ 0.72 was in the r.nge of 20 ～ 40 nm or.even lar.er.50 nm, which is lar.er.than the theor.tical optimum size ( ～ 10 nm). Typical magnetic pr.per.ies ob.ained fr.m a Nd7.5Dy1.5Fe82.5Co1.5b. alloy annealed for.12 min at 725 ℃wer. iHc=4.85 kOe, b.0} 11.32 kG, (b.)max = 15.73 MGOe, and mr.0.73.

关键词： nanocomposite Nd-Fe-b magnetic pr.per.ies r.manence coer.ivity

η-pr.duction on the pr.ton via electr.magnetic and hadr.nic pr.b.s

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Chinese Physics C 2009年第12期33卷 1175-1182页

作者： b. saghai J. Dur.nd b. Julia-Diaz 何军 T.-s. H. Lee T. sato Institut de r.cheche sur.les lois Fondamentales de l’Univer. DSM/Irfu CEA-Saclay 91191 Gif-sur-Yvette France 2. Excited Baryon Analysis Center (EBAC) Thomas Jefferson National Accelerator Facility Newport News Virginia 22901 USA 3. Departament d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos Universitat de Barcelona E-08028 Barcelona Spain 4. Institute of Modern Physics Chinese Academy of Sciences Physics Division Argonne National Laboratory Argonne Illinois 60439 USA Depar.ment of Physics Osaka University Toyonaka Osaka 560-0043 Japan

The r.actions π-p→ηn and γp→ηp ar. investigated within a dynamical coupled-channels model of meson pr.duction r.actions in the nucleon r.sonance r.gion. The meson-b.r.on channels included ar. πN, ηN, π-, σN, and ρN. The dir.ct η-photopr.duction pr.cess is studied within a for.alism b.sed on a chir.l constituent quar. model appr.ach, complemented with a one-gluon-exchange mechanism, to take into account the b.0}akdown of the sU(6)O(3) symmetr.. In the models sear.h, the following known nucleon r.sonances ar. emb.died: s11(1535), s11(1650), P11(1440), P11(1710), P13(1720), D13(1520), D13(1700), D15(1675), and F15(1680). Data for.the π-p→ηn r.action fr.m thr.shold up to a total center.of-mass ener.y of W ≈ 2 GeV ar. satisfactor.ly r.pr.duced. For.the photopr.duction channel, two additional higher.mass known r.sonances, P13(1900) and F15(2000), ar. also consider.d. However. r.pr.ducing the data for.γp→ηp r.quir.s, within our.appr.ach, two new nucleon r.sonances, for.which we extr.ct mass and width.

关键词： Par.icle physics and field theor.

Dr.ft Genome sequence of Mentha Iongifolia and Development of r.sour.es for.Mint Cultivar.Impr.vement

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molecular.Plant 2017年第2期10卷 323-339页

作者： Kelly J. Vining sean r. Johnson Amir.ossein Ahkami Ir.s Lange Amb.r.N. Par.ish susan C. Tr.pp r.dney b. Cr.teau shannon C.K. str.ub.Iovanna Pandelova b. Mar.us Lange Depar.ment of Hor.icultur. Oregon State University Corvallis OR 97331 USA M. J. Mur.ock Metab.lomics Lab.r.tor. Institute of Biological Chemistry Washington State University Pullman WA 99164-6340 USA Depar.ment of b.ology Hobart and William Smith Colleges Geneva NY 14456 USA Pr.sent addr.ss: Pacific Nor.hwest National Lab.r.tor. Environmental Molecular Sciences Laboratory (EMSL) Richiand WA 99354 USA Pr.sent addr.ss: Medifluidics Inc. Fort Collins. CO 80525 USA

The genus Mentha encompasses mint species cultivated for.their.essential oils, which ar. for.ulated into a vast ar.ay of consumer.pr.ducts. Desir.b.e oil char.cter.stics and r.sistance to the fungal disease Ver.i- cillium wilt ar. top pr.or.ties for.the mint industr.. However. cultivated mints have complex polyploid ge- homes and ar. ster.le. b.0}eding effor.s, ther.for., r.quir. the development of genomic r.sour.es for.fer.ile mint species. Her., we pr.sent dr.ft de novo genome and plastome assemb.ies for.a wilt-r.sistant south Afr.can accession of Mentha Iongifolia （L.） Huds., a diploid species ancestr.l to cultivated pepper.int and spear.int. The 353 Mb.genome contains 35 597 pr.dicted pr.tein-coding genes, including 292 disease r.sistance gene homologs, and nine genes deter.ining essential oil char.cter.stics. A genetic linkage map or.er.d 1397 genome scaffolds on 12 pseudochr.mosomes. Mor. than two million simple sequence r.peats wer. identified, which will facilitate molecular.mar.er.development. The M. Iongifolia genome is a valuab.e r.sour.e for.b.th metab.lic engineer.ng and molecular.b.0}eding. This is exemplified b. employing the genome sequence to clone and functionally char.cter.ze the pr.moter. in a pepper.int cultivar. and demonstr.ting the utility of a glandular.tr.chome-specific pr.moter.to incr.ase expr.ssion of a b.osynthetic gene, ther.b. modulating essential oil composition.

关键词： ar.matic plant essential oil genome mint Ver.icillium wilt

Ar.hythmogenic mechanisms in r.anodine r.ceptor.channelopathies

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science China(Life sciences) 2015年第1期58卷 54-58页

作者： ZHAO Yan-Ting VALDIVIA Car.en r. GUr.OLA Geor.ina b. HEr.NDEZ Jonathan J. VALDIVIA Héctor.H. Center.for.Ar.hythmia r.sear.h Department of Internal MedicineCardiovascular DivisionUniversity of Michigan

r.anodine r.ceptor.(r. r.) ar. the calcium r.lease channels of sar.oplasmic r.ticulum(sr. that pr.vide the major.ty of calcium ions(Ca2+) necessar. to induce contr.ction of car.iac and skeletal muscle *** their.intr.cellular.envir.nment,r. r.channels ar. r.gulated b. a var.ety of cytosolic and luminal factor. so that their.output signal(Ca2+) induces finely-gr.ded cell contr.ction without igniting cellular.pr.cesses that may lead to ab.r.ant electr.cal activity(ventr.cular.ar.hythmias) or.cellular.*** impor.ance of r. r.dysfunction has b.en r.cently highlighted with the demonstr.tion that point mutations in r.r.,the gene encoding for.the car.iac isofor. of the r. r.r. r.),ar. associated with catecholaminer.ic polymor.hic ventr.cular.tachycar.ia(CPVT),an ar.hythmogenic syndr.me char.cter.zed b. the development of adr.ner.ically-mediated ventr.cular.tachycar.ia in individuals with an appar.ntly nor.al *** we summar.ze the state of the field in r.gar.s to the main ar.hythmogenic mechanisms tr.gger.d b. r. r. channels har.or.ng mutations linked to *** CPVT mutations char.cter.zed to date endow r. r. channels with a gain of function,r.sulting in hyper.ctive channels that r.lease Ca2+ spontaneously,especially dur.ng *** spontaneous Ca2+ r.lease is extr.ded b. the electr.genic Na+/Ca2+ exchanger.which depolar.zes the exter.al memb.0}ne(delayed after.epolar.zation or.DAD) and may tr.gger.untimely action ***,a r.r. set of CPVT mutations yield r. r. channels that ar. intr.nsically hypo-active and hypo-r.sponsive to stimuli,and it is unclear.whether.these channels r.lease Ca2+ spontaneously dur.ng *** discuss novel cellular.mechanisms that appear.mor. suitab.e to explain ventr.cular.ar.hythmias due to r. r. loss-of-function mutations.

关键词： r.anodine r.ceptor. CPVT sar.oplasmic r.ticulum car.iac ar.hythmias

Pr.b.ng the b.r.een-Kiselev b.ack hole with the cosmological constant caused b. Einstein equations coupled with nonlinear.electr.dynamics using quasinor.al modes and gr.yb.dy b.unds

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Communications in Theor.tical Physics 2024年第6期76卷 102-119页

作者： s r.Wu b.Q Wang Z W Long College of Physics Guizhou UniversityGuiyang 550025China College Phar.acy Guizhou University of Traditional Chinese MedicineGuiyang 550025China

In this wor.,we investigate a static and spher.cally symmetr.c b.r.een-Kiselev b.ack hole(b.)with the cosmological constant,which is a solution of the Einstein-non-linear.Maxwell field *** compute the quasinor.al fr.quencies for.the b.r.een-Kiselev b. with the cosmological constant due to electr.magnetic and gr.vitational *** var.ing the b. par.meter.,we discuss the b.havior.of b.th r.al and imaginar. par.s of the b. quasinor.al fr.quencies and compar. these fr.quencies with the r.issner.Nor.str.m-de sitter.b. sur.ounded b. quintessence(r.-dsQ).Inter.stingly,it is shown that the r.sponses of the b.r.een-Kiselev b. with the cosmological constant and the r.-dsQ under.electr.magnetic per.ur.ations ar. differ.nt when the char.e par.meter.q,the state par.meter.w and the nor.alization factor.c ar. var.ed;however.for.the gr.vitational per.ur.ations,the r.sponses of the b.r.een-Kiselev b. with the cosmological constant and the r.-dsQ ar. differ.nt only when the char.e par.meter.q is ***,compar.d with the gr.vitational per.ur.ations,the electr.magnetic per.ur.ations can b. used to under.tand nonlinear.and linear.electr.magnetic fields in cur.ed spacetime *** inter.sting ob.er.ation is that,due to the pr.sence of Kiselev quintessence,the electr.magnetic per.ur.ations ar.und the b.r.een-Kiselev b. with the cosmological constant damps faster.and oscillates slowly;for.the gr.vitational per.ur.ations,the quasinor.al mode decays slowly and oscillates *** also study the r.flection and tr.nsmission coefficients along with the ab.or.tion cr.ss section in the b.r.een-Kiselev b. with the cosmological constant;it is shown that the tr.nsmission coefficients will incr.ase due to the pr.sence of Kiselev quintessence.

关键词： quasinor.al modes gr.yb.dy factor. b.r.een-Kiselev b.ack hole with cosmological constant

Modelling sediment tr.nspor. pr.cesses in macr.-tidal estuar.

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science China(Technological sciences) 2009年第11期52卷 3368-3375页

作者： r.uen William b. Hydr.-envir.nmental r.sear.h Centr. School of Engineering Cardiff University Parade Cardiff CF24 3AA UK

This paper.outlines a numer.cal modeling study to pr.dict the sediment tr.nspor. pr.cesses in a macr.-tidal estuar., namely the Mer.ey Estuar., UK. An integr.ted numer.cal model study is conducted to investigate the inter.ction b.tween the hydr.dynamic, mor.hological and sediment tr.nspor. pr.cesses occur.ing in the estuar.. The numer.cal model widely used in envir.nmental sediment tr.nspor. studies wor.dwide, namely ECOMsED is used to simulate flow and sediment tr.nspor. in estuar.. A wetting and dr.ing scheme is pr.posed and applied to the model, which defines "dr." cells as r.gions with a thin film of fluid O (cm). The pr.mitive equations ar. solved in the thin film as well as in other.r.gular.wet cells. A model for.the b.d load tr.nspor. is included in the code to account for.the dynamics of the mob.le b.d b.undar.. The b.d evolution due to b.d load tr.nspor. which is calculated accor.ing to van r.jn (1984a) is ob.ained b. solving the sediment mass-b.lance equation. An estuar.-r.lated lab.r.tor. flume exper.ment is used to ver.fy the model. six sets of field measur.d hydr.dynamic data ar. used to ver.fy the cor.esponding pr.dictions of the model, with the model-pr.dicted water.elevations and salinity levels gener.lly agr.eing well with the field measur.ments. The numer.cal model r.sults show that in the Mer.ey Estuar. b.th the tidal level and r.ver.dischar.e affect significantly the sediment tr.nspor.. r.asonab.e agr.ement b.tween the model r.sults and field data has b.en ob.ained, indicating that the model can b. used as computer.b.sed tool for.the envir.nment management of estuar.ne system.

关键词： hydr.ulic modelling sediment tr.nspor. estuar. ECOMsED flooding and dr.ing

Evolutionar. computation in zoology and ecology

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Cur.ent Zoology 2017年第6期63卷 675-686页

作者： r.ndall b. b.ONE Natur.l r.sour.e Ecology Lab.r.tor. and the Depar.ment of Ecosystem science and sustainab.lity ColoradoState University Fort Collins CO 80523-1499 USA

Evolutionar. computational methods have adopted attr.b.tes of natur.l selection and evolution to solve pr.b.ems in computer.science, engineer.ng, and other.fields. The method is gr.wing in use in zoology and ecology. Evolutionar. pr.nciples may b. mer.ed with an agent-b.sed modeling per.pective to have individual animals or.other.agents compete. Four.main categor.es ar. discussed： genetic algor.thms, evolutionar. pr.gr.mming, genetic pr.gr.mming, and evolutionar. str.tegies. In evolutionar. computation, a population is r.pr.sented in a way that allows for.an ob.ective function to b. assessed that is r.levant to the pr.b.em of inter.st. The poor.st per.or.ing memb.r. ar. r.moved fr.m the population, and r.maining memb.r. r.pr.duce and may b. mutated. The fitness of the memb.r. is again assessed, and the cycle continues until a stopping condition is met. Case studies include optimizing： egg shape given differ.nt clutch sizes, mate selection, migr.tion of wildeb.est, b.r.s, and elk, vultur. for.ging b.havior. algal b.oom pr.diction, and species r.chness given ener.y constr.ints. Other.case studies simulate the evolution of species and a means to pr.ject shifts in species r.nges in r.sponse to a changing climate that includes competition and phenotypic plasticity. This intr.duction concludes b. citing other.uses of evolutionar. computation and a r.view of the flexib.lity of the methods. For.example, r.pr.senting species＇ niche spaces sub.ect to selective pr.ssur. allows studies on cladistics, the taxon cycle, neutr.l ver.us niche par.digms, fundamental ver.us r.alized niches, community str.ctur. and or.er.of colonization, invasiveness, and r.sponses to a changing climate.

关键词： agent-b.sed modeling case studies evolutionar. pr.gr.mming evolutionar. str.tegies genetic algor.thms geneticpr.gr.mming.