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Synthesis of Silsesquioxane Cages fr.m Phenyl-cis-tetr.l, 1,3-Divinyltetr.ethoxydisiloxane and Cyclopentyl r.sins

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Chemical r.sear.h in Chinese Univer.ities 2004年第4期20卷 433-436页

作者： alan r. Bassindale Peter.G. Taylor Depar.ment of Chemistr. Open UniversityDepartment of Chemistry Open University Walton Hall Milton Keynes MK7 6AA UKWalton Hall Milton Keynes MK7 6AA UK

the synthesis of T_8, T_ 10 and T_ 12 silsesquioxane cages fr.m a r.nge of star.ing mater.als: phenyl-cis-tetr.l, 1,3-divinyltetr.ethoxydisiloxane and cyclopentyl T r.sins by using tetr. n-butylammonium fluor.de(TBAF) as the catalyst is descr.bed in this paper. the r.action yields obtained viathe cur.ent r.ute ar. better.compar.d to those viathe liter.tur. r.utes. Some of the cage compounds have been char.cter.zed by X-r.y cr.stallogr.phy.

关键词： Synthesis Silsesquioxane cage Phenyl-cis-tetr.l 1,3-Divinyltetr.ethoxydisiloxane Cyclopentyl T r.sin

Late syn-to post-collisional magmatism in Madagascar.the genesis of the Ambalavao and Maevar.no Suites

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Geoscience Fr.ntier. 2019年第6期10卷 2063-2084页

作者： Donnelly B.Ar.hibald alan S.Collins John D.Foden Justin L.Payne Peter.Holden théodor. r.zakamanana Depar.ment of Ear.h Sciences St.Francis Xavier UniversityPhysical Sciences Complex5009 Chapel SquareAntigonishNSB2G 2W5Canada Centr. for.Tectonics Resources and Exploration(TRaX)Department of Earth SciencesThe University of AdelaideAdelaide 5005SAAustralia Centr. for.Tectonics Resources and Exploration(TRaX)School of Built and Natural EnvironmentsUniversity of South AustraliaMawson LakesSA5001Australia r.sear.h School of Ear.h Sciences The Australian National UniversityCanberraACT2601Australia Depar.ement des Sciences de la Ter.e Universitede ToliaraToliara601Madagascar

the East Afr.can Or.gen involves a collage of Pr.ter.zoic micr.continents and ar. ter.anes that became wedged between older.cr.tonic blocks dur.ng the assembly of *** Ediacar.n-Cambr.an Ambalavao and Maevar.no Suites in Madagascar.wer. emplaced dur.ng the waning or.genic stages and consist of weakly defor.ed to undefor.ed plutonic r.cks and dykes of mainly por.hyr.tic gr.nite but also gabbr.,dior.te and char.ockite.U-Pb geochr.nological data date emplacement of the Ambalavao Suite to between ca.580 Ma and 540 Ma and the Maevar.no Suite to between ca.537 Ma and522 *** and tr.ce element concentr.tions ar. consistent with emplacement in a syn-to postcollisional tectonic setting as A-type(anor.genic) ***(δ^(18)O of 5.27‰-7.45‰) and hafnium(ε(Hf)(t) of-27.8 to-12.3) isotopic data fr.m plutons in the Itr.mo and Antananar.vo Domains ar. consistent with incor.or.tion of an ancient cr.stal *** pr.mitive δ^(18)O(5.27‰-5.32‰) andε(Hf)(t)(+0.0 to+0.2) isotopic values r.cor.ed in samples collected fr.m the Ikalamavony Domain demonstr.te the isotopic var.ation of basement sour.es pr.sent in the Malagasy *** Hf isotopic composition of Malagasy zir.on ar. unlike mor. juvenile Ediacar.n-Cambr.an zir.on sou r.es elsewher. in the East Afr.can Or.gen and,as such,Madagascar.r.pr.sents a distinct and identifiable detr.tal zir.on sour.e r.gion in Phaner.zoic sedimentar. pr.venance *** together.these data indicate that high-T cr.stal anatexis,cr.stal assimilation and inter.ction of cr.stal mater.al with mantle-der.ved melts wer. the pr.cesses oper.ting dur.ng magma *** magmatism was coeval with polyphase defor.ation thr.ughout Madagascar.dur.ng the amalgamation of Gondwana and magmatism is inter.r.ted to r.flect lithospher.c delamination of an extensive or.genic plateau.

关键词： Madagascar geology East Afr.can or.gen Zir.on geochr.nology Zir.on oxygen and hafnium isotopes Post-collisional magmatism

New Methods and Synthetic Applications of Asymmetr.c Nitr.gen Tr.nsfer

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Chinese Jour.al of Chemistr. 2005年第9期23卷 1270-1272页

作者： Ar.STr.NG, alan EDMONDS, lan COOKE, r.char. S. SHANAHAN, Stephen E. KNIGHT, Jamie D. CUMMING, Gr.ham r. Depar.ment of Chemistr. Imperial College London South Kensington London SW7 2AZ UK

Str.ctur./r.activity r.lationships of N-alkoxycar.onyl- and N-car.oxamidooxazir.dines ar. explor.d, and conditions ar. discover.d for.the efficient amination of sulfides and pr.mar. amines. r.actions of these oxazir.dines with alkenes ar. also examined, and lead to inter.sting new heter.atom tr.nsfer.r.action pr.ducts. Finally, the aminative r.ar.angement of 2-alkoxydihydr.pyr.ns leads to a useful ster.ocontr.lled synthesis of pyr.olidines which can under.o synthetic manipulations to give [2.2.1 ]- and [3.2.1 ]-azabicycles.

关键词： N-alkoxycar.onyl N-car.oxamidooxazinidine amination

the involvement of XPC pr.tein in the cisplatin DNA damaging tr.atment-mediated cellular.r.sponse

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Cell r.sear.h 2004年第4期14卷 303-314页

作者： alan DOMBKOWSKI,Lynn CHUANG Institute of Envir.nmental Health Sciences Wayne State Univer.ity 2727 Second Avenue Detr.it MI 48201 USA Institute of Envir.nmental Health Sciences Wayne State Univer.ity 2727 Second Avenue Detr.it MI 48201 USA

r.cognition of DNA damage is a cr.tical step for.DNA damage-mediated cellular.r.sponse. XPC is an impor.ant DNA damage r.cognition pr.tein involved in nucleotide excision r.pair.(NEr.. We have studied the XPC pr.tein in cisplatin DNA damaging tr.atment-mediated cellular.r.sponse. Compar.son of the micr.ar.ay data fr.m both nor.al and XPC-defective human fibr.blasts identified 861 XPC-r.sponsive genes in the cisplatin tr.atment (with minimum fold change≥1.5). the cell cycle and cell pr.lifer.tion-r.lated genes ar. the most affected genes by the XPC defect in the tr.atment. Many other.cellular.function genes, especially the DNA r.pair.and signal tr.nsduction-r.lated genes, wer. also affected by the XPC defect in the tr.atment. To validate the micr.ar.ay data, the tr.nscr.ption levels of some micr.ar.ay-identified genes wer. also deter.ined by an r.-PCr.based r.al time PCr.assay. the r.al time PCr.r.sults ar. consistent with the micr.ar.ay data for.most of the tested genes, indicating the r.liability of th

关键词： XPC cisplatin DNA-damaging tr.atment micr.ar.ay analysis.

Pr.nciples of Molecular.Vir.logy 4th

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Cir.ulation Char.cter.stics of Per.istent Cold Spells in Centr.l–Easter. Nor.h Amer.ca

丛书名： Cann, Pr.nciples of Molecular.Vir.logy

2005年

作者： Cann, alan

ISBN: (数字)9780080470726

ISBN: (纸本)9780120887873;9780080470726

Pr.nciples of Molecular.Vir.logy, Four.h Edition pr.vides an essential intr.duction to moder. vir.logy in a clear.and concise manner. It is a highly enjoyable and r.adable text with numer.us illustr.tions that enhance the r.ader.'s under.tanding of impor.ant pr.nciples.• New mater.al on vir.s str.ctur., vir.s evolution, zoonoses, bushmeat, SAr. and bioter.or.sm • Standar. ver.ion includes CD-r.M with FLASH animations, vir.ual inter.ctive tutor.als and exper.ments, self-assessment questions, useful online r.sour.es, along with the glossar., classification of subcellular.infectious agents and histor. of vir.logy

关键词： Molecular.vir.logy

来源：畅想之星图书光盘版（南... 评论

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Jour.al of Meteor.logical r.sear.h 2017年第1期31卷 250-260页

作者： Zhenhua LI alan H. MANSON Yanping LI Chr.s MEEK Institute of Space and Atmospher.c Studies Department of Physics and Engineering Physics University of Saskatchewan 116 Science Place Saskatoon Saskatchewan S7N 5E2 Canada Global Institute for.Water.Secur.ty University of Saskatchewan 11 Innovation Boulevard Saskatoon Saskatchewan S7N3H5 Canada

the cir.ulation patter.s of per.istent cold weather.spells with dur.tions longer.than 10 days in centr.l-easter. Nor.h Amer.ca （United States and Canada; 32° 52°N, 95°-65°W） ar. investigated by using NCEP r.analysis data fr.m 1948 to 2014. the cr.ter.a for.the per.istent cold spells ar.：（1） thr.e-day aver.ged temper.tur. anomalies for.the r.gional aver.ge over.the centr.l-easter. United States and Canada must be below the 10th per.entile, and （2） such extr.me cold spells must last at least 10 days. the cir.ulation patter.s associated with these cold spells ar. ex- amined to find the common signals of these events. the cir.ulation anomaly patter.s of these cold spells ar. categor. ized based on the E1 Nifio--Souther. Oscillation, Ar.tic Oscillation （AO）, and other.climate indices. the atmospher.c cir.ulation patter.s that favor.the cold spells ar. identified thr.ugh composites of geopotential height maps for.the cold spells. Negative AO phases favor.per.istent cold spells. Phases of sea sur.ace temper.tur. （SST） modes that ar. associated with war. SSTs in the easter. extr.tr.pical Pacific also favor.per.istent cold events in the study r.gion. Str.tospher.c polar.vor.ex br.akdown alone is not a good pr.dictor.for.the r.gional extr.me cold spells in centr.l-easter. Nor.h Amer.ca. the mer.dional disper.ions of quasi-stationar. r.ssby waves in the Pacific-Nor.h Amer.ca sector.in ter.s of cut-off zonal wavenumber.modulated by backgr.und flow ar. analyzed to pr.vide insight into the differ.nce in evolution of the cold spells under.differ.nt mean AO phases. the waveguide for.AO 〉 1 is in a nar.ow latitudinal band center.d on 40°N, wher.as the waveguide for.AO 〈 -1 is in a br.ader.latitudinal band fr.m 40° to 65°N. the cir.ulation patter.s and lower.boundar. conditions favor.ble for.per.istent cold spells identified by this study can be a stepping-stone for.impr.ving winter.subseasonal for.casting in Nor.h Amer.ca.

关键词： cold spell quasi-stationar. r.ssby wave ENSO Ar.tic Oscillation

Maintaining r.sour.es for.Tr.ditional Medicine: A Global Over.iew and a Case Study fr.m Buganda (Uganda)

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植物分类与资源学报 2013年第4期35卷 407-423页

作者： alan Hamilton Yildiz Aumeer.ddy-thomas Kunming Institute of Botany Chinese Academy of Sciences Centr. d' Ecologie Fonctionnelle et Evolutive

Pr.sentations at a session of the 13 th Congr.ss of the Inter.ational Society for.Ethnobiology ( ISE,May 2012) pr.vided a global over.iew of'maintaining r.sour.es for.tr.ditional medicine'. Two themes r.ceived special attention,tr.nsmission of tr.ditional medical knowledge and conser.ation of medicinal plants. the consensus at the well-attended session was that tr.ditional medicine can play a useful r.le in pr.mar. healthcar.,including for.chr.nic complaints and spir.tual pr.blems. However.the use of tr.ditional medicine is declining in many places. Some pr.ctical effor.s at maintaining r.sour.es for.tr.ditional medicine ar. descr.bed. A case study for.Buganda ( Uganda) , given in gr.ater.detail,shows that pr.gr.ss in maintaining r.sour.es for.tr.ditional medicine can be impeded by for.es not dir.ctly r.lated to its intr.nsic mer.ts. the value of making effor.s to maintain r.sour.es for.tr.ditional medicine is discussed in r.lation to its contr.bution to biocultur.l conser.ation,much needed today to counter.balance the homogenising and ecologically destabilising influences of globalisation.

关键词：植物学植物分类植物演化植物生理学生物因素

Go!Technology in action / 5th ed.

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Effects of sun compass er.or.on spatial sear.h by Clar.’s nutcr.cker.

2009年

作者： Evans alan.

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Integr.tive Zoology 2019年第2期14卷 172-181页

作者： Debbie M.KEllY Ken CHENG r.ssell BALDA alan C.KAMIL Depar.ment of Psychology University of ManitobaWinnipegCanada Depar.ment of Biological Sciences Macquarie UniversitySydneyAustralia Depar.ment of Biological Sciences Northern Arizona UniversityFlagstaffUSA Depar.ment of Biological Sciences University of Nebraska-LincolnLincolnUSA

Animals employ compasses dur.ng navigation,but little attention has been paid to how accur.cy is maintained in the face of compass er.or.which is inevitable in biological *** use of multiple landmar.s may minimize the effect of compass *** allowed Clar.’s nutcr.cker. to cache seeds in an outdoor.aviar. with either.one or.four.landmar.s pr.sent,and subsequently subjected them to small clock-shifts mimicking the effects of compass *** pr.dicted,the r.sults showed a significant decr.ase in sear.h accur.cy following the clock-shift when one landmar. was pr.sent but not when four.landmar.s wer. *** r.sults suppor. that nutcr.cker. encode infor.ation fr.m the sun as well as ter.estr.al landmar.s,and these spatial cues ar. used in a flexible ***,our.r.sults ar. impor.ant as they suppor. the hypothesis that multiple landmar.s may be used dur.ng situations wher. the sun compass has even a small amount of er.or.

关键词： Clar.’s nutcr.cker clock-shift er.or landmar.s sun compass