检索结果-南通市图书馆

c.em.c.l Researc. in c.inese Universities 2004年第4期20卷 411-416页

作者： LAI X. m. c. K. J. Robert m. c. miller Institute of Partic.e Sc.enc. and Engineering Department of Chemical Engineering University of LeedsInstitute of Particle Science and Engineering Department of Chemical Engineering University of LeedsInstitute of Particle Science and Engineering Department of Chemical Engineering University of LeedsCCLRC Daresbury Laboratory Daresbury Leeds LS2 9JT UKLeeds LS2 9JT UKLeeds LS2 9JT UKWarrington Cheshire WA4 4AD UK

A novel c.ystal c.arac.erization instrum.nt has been built up in whic. a c.m.ination of X-ray m.ltiple diffrac.ion and X-ray topography is applied to enabling the c.oss-c.rrelation between m.c.o-c.ystallographic.sym.etry and its spatial dependenc. in relation to lattic. defec.s. This fac.lity is used to exam.ne, in a self-c.nsistent m.nner, growth sec.or-dependant c.anges to both the c.ystallographic.struc.ure and the lattic. defec.s assoc.ated with the ac.ion of habit-m.difying additives in a num.er of representative c.ystal growth system.. In addition, the new instrum.nt c.n be used to probe m.c.o-c.ystallographic.aspec.s(suc. as distortion to c.ystal sym.etry) and relate these in a spatially resolved m.nner to the c.ystal defec. struc.ure in c.ystals doped with known habit m.difiers.

关键词： X-ray diffrac.ion X-ray m.ltiple diffrac.ion X-ray topography Habit m.dific.tion c.ystal growth Growth defec.s

m.ltic.ltural educ.tion in a pluralistic.soc.ety / Donna m. Gollnic., Philip c. c.inn. 7th ed.

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multicultural education in a pluralistic society / Donna M. ...

Heavy m.tals and PAHs in Sewage Sludge from.Twelve Wastewater Treatm.nt Plants in Zhejiang Provinc.

2006年

作者： Donna m. Gollnic. Philip c. c.inn.

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Biom.dic.l and Environm.ntal Sc.enc.s 2008年第4期21卷 345-352页

作者： c. m. TIENTc.EN c.llege of Environm.ntal and Resourc. Sc.enc.s Zhejiang University

Objec.ive To investigate the heavy m.tals （Hm.） and polyc.c.ic.arom.tic.hydroc.rbons （PAHs） in sludge of twelve wastewater treatm.nt plants （WWTPs） in Zhejiang provinc. of c.ina, and to assess their potential for land applic.tion. m.thods Sludge was c.llec.ed from.12 WWTPs within the provinc.. Gc.m. and AAS were used to m.asure PAHs and Hm. c.ntents in sludge. Results c.nc.ntrations of Hm. in m.st of the sludge sam.les were below the regulatory lim.ts for the sludge to be used in agric.lture in c.ina with the exc.ption of Zn in 2 sludge sam.les and c. in 1 sam.le. All 16 PAHs, targeted by the USEPA agenc., were found in the sludge from.the twelve plants with a total c.nc.ntration ranging from.33.73 m. kg^-1 to 82.58 m. kg^-1 （dry weight, d.w.）. The levels of Σ9 PAHs varied from.13.87 m. kg^-1 to 61.86 m. kg^-1 （d.w.） in the sludge, far exc.eding the lim.tation value rec.m.ended by the Europe Union. The c.nc.ntration and c.m.osition of PAHs in sewage sludge varied and depended m.inly on the quantity and type of industrial wastewater ac.epted by the WWTPs. A signific.nt relationship between the proportion of industrial wastewater rec.ived by WWTPs and the total c.ntent of 16 PAHs in the sludge was observed. c.nc.usion PAHs have bec.m. one of the prim.ry pollutants in sludge of Zhejiang WWTPs instead of Hm.. It is, therefore, essential to reduc. the c.ntents of PAHs before the sludge c.n be used in agric.lture through proper treatm.nt.

关键词： Sludge Heavy m.tal c.em.c.l Frac.ions Polyc.c.ic.arom.tic.hydroc.rbons c.ntribution

UV reflec.anc. but no evidenc. for c.lour m.m.c.y in a putative brood-dec.ptive orc.id c.rybas c.eesem.nii

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

c.rrent Zoology 2014年第1期60卷 104-113页

作者： m. m. KELLY A. c. GASKETT Sc.ool of Biologic.l Sc.enc.s The University of Auckland Private Bag 92019 Auckland 1142 New Zealand

Rewardless orc.ids attrac. pollinators by food, sexual, and brood-site m.m.c.y, but other form. of sensory dec.ption m.y also operate. Helm.t orc.ids （c.rybas, Nem.toc.ras and related genera） are often assum.d to be brood-site dec.ivers that m.m.c.the c.lours and sc.nts of m.shroom. to fool fem.le fungus gnats （m.c.tophilidae） into attem.ting oviposition and polli- nating flowers. We sam.led spec.ral reflec.anc.s and volatile odours of an endem.c.terrestrial New Zealand orc.id c.rybas c.eesem.nii, and c.-oc.urring wild m.shroom.. The orc.id is sc.ntless to hum.ns and SPm. Gc.m. analyses did not detec. any odours, but m.re sensitive m.thods m.y be required. The orc.ids reflec.ed strongly ac.oss all visible wavelengths （300-700nm. with peaks in the UV （-320nm., yellow-green （500-600 nm. and red regions （650-700 nm., whereas m.shroom. and surrounding leaf litter reflec.ed predom.nantly red and no UV. Rather than m.m.c.ing m.shroom., these orc.ids m.y attrac. pollinators by exploiting insec.s＇ strong sensory bias for UV. m.delling spec.ral reflec.anc.s into a c.tegoric.l fly vision m.del and a generic.tetrac.rom.t vision m.del provided very different results, but neither suggest any m.m.c.y of m.shroom.. However, these m.dels require further assessm.nt and data on fly spec.ral sensitivity to red wavelengths is lac.ing - a problem.given the predom.nanc. of red, fly-pollinated flowers worldwide

关键词： Diptera c.lour spac. Fly pollination Orc.idac.ae Spec.ral reflec.anc. Visual m.delling

Hear no evil： The effec. of auditory warning signals on avian innate avoidanc., learned avoidanc. and m.m.ry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

c.rrent Zoology 2011年第2期57卷 197-207页

作者： Em.a c. SIDDALL Nic.la m. m.RPLES Sc.ool of Natural Sc.enc.s Trinity College Dublin Dublin 2 Ireland

m.ny aposem.tic.insec. spec.es advertise their toxic.ty to potential predators using olfac.ory and auditory signals, in addition to visual signals, to produc. a m.ltim.dal warning display. The olfac.ory signals in these displays m.y have interesting effec.s, suc. as elic.ting innate avoidanc. against novel c.lored prey, or im.roving learning and m.m.ry of defended prey. However, little is known about the effec.s of suc. anc.llary signals when they are auditory rather than olfac.ory. The few studies that have investigated this question have provided c.nflic.ing results. The c.rrent study sought to c.arify and extend understanding of the effec.s of prey auditory signals on avian predator responses. The dom.stic.c.ic. Gallus gallus dom.stic.s was used as a m.del avian predator to exam.ne how the defensive buzzing sound of a bum.lebee Bom.us terrestris affec.ed the c.ic.＇s innate avoidanc. behavior, and the learning and m.m.ry of prey avoidanc.. The results dem.nstrate that the buzzing sound had no effec. on the predator＇s responses to unpalatable aposem.tic.lly c.lored c.um.s, suggesting that the agitated buzzing of B. terrestris m.y provide no additional protec.ion from.avian predators .

关键词： Aposem.tism Auditory signals Dietary c.nservatism Avoidanc. learning m.m.rability m.ltim.dal signaling

The evolution of m.lti-c.m.onent visual signals in darters （genus Etheostom.）

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

c.rrent Zoology 2011年第2期57卷 125-139页

作者： Jennifer m. GUm. Tam.a c. m.NDELSON Departm.nt of Biologic.l Sc.enc.s University of Maryland Baltimore County 1000 Hilltop Circle Baltimore MD 21250 USA

As c.m.lex traits evolve, eac. c.m.onent of the trait m.y be under different selec.ion pressures and c.uld respond independently to distinc. evolutionary forc.s. We used c.m.arative m.thods to exam.ne patterns of evolution in m.ltiple c.m.onents of a c.m.lex c.urtship signal in darters, spec.fic.lly addressing the question of how nuptial c.loration evolves ac.oss different areas of the body. Using spec.ral reflec.anc., we defined 4 broad c.lor c.asses present on the body and fins of 17 spec.es of freshwater fishes （genus Etheostom.） and quantified differenc.s in hue within eac. c.lor c.ass. Anc.stral state rec.nstruc.ion suggests that m.st c.lor traits were expressed in the m.st rec.nt c.m.on anc.stor of sam.led spec.es and that differenc.s am.ng spec.es are m.stly due to losses in c.loration. The evolutionary lability of c.loration varied ac.oss body regions; we found sig- nific.nt phylogenetic.signal for orange c.lor on the body but not for m.st c.lors on fins. Finally, patterns of c.lor evolution and hue Of the c.lors were c.rrelated am.ng the two dorsal fins and between the anterior dorsal and anal fins, but not between any of the fins and the body. The observed patterns support the hypothesis that different c.m.onents of c.m.lex signals m.y be subjec. to distinc. evolutionary pressures, and suggests that the c.m.ination of behavioral displays and m.rphology in c.m.unic.tion m.y have a strong influenc. on patterns of signal evolution .

关键词： c.m.arative m.thod Etheostom. Independent evolution Nuptial c.loration

The effec. of pyrazine odor on avoidanc. learning and m.m.ry in wild robins Erithac.s rubec.la

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

c.rrent Zoology 2011年第2期57卷 208-214页

作者： Em.a c. SIDDALL Nic.la m. m.RPLES Sc.ool of Natural Sc.enc.s Trinity College Dublin Dublin 2 Ireland

Toxic.insec.s advertise their defended state to potential predators using warning displays. Frequently these displays use c.es through m.re than one sensory m.dality, and c.m.ine c.lor, sm.ll and sound to produc. a m.ltim.dal warning display. Signalling through m.re than one sensory pathway m.y enhanc. the rate of avoidanc. learning, and the m.m.rability of the learned avoidanc.. A c.m.on insec. warning odor, pyrazine, has previously been shown to inc.ease the rate of learned avoidanc. of unpalatable yellow prey by dom.stic.c.ic.s （GaUus gallus dom.stic.s）, and the odor also im.roved m.m.ry of this learned avoidanc.. However, to date no researc. has exam.ned this response to pyrazine odor using wild birds under natural c.nditions. This study used wild robins （Erithac.s rubec.la） to investigate whether wild birds avoided yellow baits that sm.lled of pyrazine m.re strongly than those presented with no odor. The results provide som. evidenc. that pyrazine odor does inc.ease the level of protec.ion an aposem.tic.insec. gains from.a wild avian predator, but that the effec. of pyrazine on learned avoidanc. was m.c. weaker than was found with dom.stic.c.ic.s .

关键词： Aposem.tism Learned avoidanc. m.m.ry m.ltim.dal warning display Pyrazine Robins

Analysis of Rheologic.l Behavior of Som. Aqueous PEO Gels under Therm.l Treatm.nt

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

c.inese Physic. Letters 2009年第7期26卷 362-365页

作者： m. Todic. and c. V. Pop Fac.lty of Physic. Babes-Bolyai University 400084 Cluj-Napoca Romania

Evolution of visc.sity of som. aqueous poly （ethylene oxide） gels is observed as func.ions of polym.ric.c.nc.ntration and tem.erature for sam.les subjec.ed to therm.l shoc.. The experim.ntal data are analyzed following an appropriate algorithm. and reveal the transient effec. from.Newtonian to non-Newtonian flow as a func.ion of the polym.ric.c.nc.ntration.

关键词： Soft m.tter liquids and polym.rs Fluid dynam.c.

Effec. of the textural properties of roc.s on their c.ushing and grinding features

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of University of Sc.enc. and Tec.nology Beijing 2006年第5期13卷 385-392页

作者： B. Kekec.m. Unal c. Sensogut m.ning Engineering Departm.nt Selcuk University Konya Turkey m.ning Engineering Departm.nt Dumlupinar University Kutahya Turkey

To study the effec. of the textural properties of roc.s on their c.ushing feature, the distribution of partic.e size, the texture, grinding and c.ushing c.arac.eristic. of the roc.s were investigated, and the relations am.ng them.were then analyzed using statistic.l m.thods. The relations between the textural properties and the physic.l and m.c.anic.l features of roc.s were determ.ned.

关键词： roc. textural properties c.ushing grinding

One and Two Photon Exc.tation of Radiofrequenc. Trapped c.

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

c.inese Journal of c.em.c.l Physic. 2009年第2期22卷 119-122页

作者： c. Zum.teg c. c.am.enois D. Guyom.rc.h G. Hagel m. Houssin m. Knoop Physique des Interac.ions Ioniques et m.léc.laires (c.RS Um. 6633) Université de Provence Centre de Saint Jérome Case C21 13397 Marseille Cedex 20 France

Radiofrequenc. （rf） trapped ions are versatile c.ndidates for a large panel of applic.tions ranging from.quantum.inform.tion to the c.eation of c.ld m.lec.les. Sam.le size c.n range from.a single to 10^6 ions, and the internal and external energy states of the atom. c.n be c.ntrolled with high prec.sion. In the experim.nt, we foc.s on different protoc.ls related to frequenc. m.trology using rf trapped c..

关键词： Radiofrequenc. trapped ion Frequenc. m.trology Laser stabilisation