检索结果-南通市图书馆

Combining innovat.ve science and policy t. improve air qualit. in cit.es wit. refining and chemicals manufact.ring： t.e case st.dy of Houst.n, t.xas, USA

引用

Front.ers of Chemical Science and Engineering 2017年第3期11卷 293-304页

作者： david t. allen Universit. of t.xas Aust.n Department of Chemical Engineering and Center for Energy and Environmental Resources Austin TX 78759 USA

In Houst.n, a combinat.on of urban emissions from a cit. of 4 million people, coupled wit. emissions from ext.nsive pet.oleum refining and chemical manufact.ring, leads t. condit.ons for phot.chemist.y t.at.are unique in t.e Unit.d St.t.s, and hist.rically, t.e cit. had experienced some of t.e highest.ozone concent.at.ons recorded in t.e Unit.d St.t.s. Large air qualit. field st.dies （t.e t.xas Air Qualit. St.dies or t.xAQS I and II） were conduct.d t. det.rmine root.causes of t.e high ozone concent.at.ons. Hundreds of air qualit. invest.gat.rs, from around t.e world, deployed inst.ument. on aircraft. on ships, and at.fixed ground sit.s t. make ext.nsive air qualit. measurement.; det.iled phot.chemical modeling was used t. int.rpret.and assess t.e implicat.ons of t.e measurement.. t.e t.xas Air Qualit. St.dies revealed t.at.bot. cont.nuous and episodic emissions of light.alkenes, which came t. be called highly react.ve volat.le organic compounds, played a crit.cal role in t.e format.on of ozone and ot.er phot.chemical oxidant. in t.e region. Under- st.nding and quant.fying t.e role of t.ese emissions in regional air qualit. required innovat.ons in charact.rizing emissions and in phot.chemical modeling. Reducing emissions required innovat.ve policy approaches. t.ese coupled scient.fic and policy innovat.ons are described, and t.e result. subst.nt.ally cleaner air for Houst.n, is document.d. t.e lessons learned from t.e Houst.n air qualit. experience are relevant.t. cit.es wit. similar populat.on and indust.ial profiles around t.e world.

关键词： ozone air qualit. highly react.ve volat.le organic compounds Houst.n

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Regulat.on of propriet.ry t.adit.onal Chinese medicines in Aust.alia

引用

Chinese Journal of Nat.ral Medicines 2017年第1期15卷 12-14页

作者： david t. Graham ISO t.chnical commit.ee 249 (1SO/t. 249) 7-C Shuguang Building 189 Pu 'an Road Shanghai 200021 China

t.is review art.cle describes t.e regulat.on of propriet.ry Chinese medicines for t.e Aust.alian market. which may permit.many medicines used in t.adit.onal Chinese Medicine t. have a simplified process of market.acce... 详细信息

关键词： Regulat.on Aust.alia Chinese medicines

来源：

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

Biobanking and omics

引用

Front.ers in Biology 2018年第4期13卷 287-292页

作者： david t. Harris Execut.ve Direct.r Biorepository University of Arizona PO Box 245221. AHSC 6122 Tucson AZ 85724 USA

BACKGROUND： t.e ＂Era of Big Dat.＂ and ＂Precision Medicine＂ is now upon us. t.at.is, int.rrogat.on of large dat. set. obt.ined from groups of similar pat.ent. or from t.e pat.ent.t.emselves over t.me will now hypot.et.cally permit.t.erapies t. be designed t. provide maximal efficacy wit. minimal side effect.. However, such discoveries depend upon recruit.ent.of very large numbers of subject. （t.ns of t.ousands） along wit. t.eir associat.d biospecimens and medical records. When considering t.e est.blishment.of a biobank or t.e refocusing of an exist.ng reposit.ry for t.e purpose of＂omics＂ research （i.e., genomics, met.bolomics, prot.omics, microbiomics, et..） and/or precision medicine, t.ere are a number of considerat.ons t. ponder. Each of t.ese facet. is discussed. OBJECt.VE： t.e object.ve of t.is review is t. describe best.pract.ces for t.e est.blishment.and operat.ons ofa biobank t.at.will be used for omics （genomics, prot.omics, met.bolomics, microbiomics） analyses based on published lit.rat.re and our own pract.cal experiences. MEt.ODS： We describe t.e most.commonly described approaches t. a variet. of biobanking issues, including our own pract.cal experiences over t.e past.5 years. RESULt.： Based on t.e part.cular biobanking sit.at.on and downst.eam applicat.on, we have described best.pract.ces based on t.e lit.rat.re and own experience, t.king int. considerat.on ease of applicat.on and cost.. CONCLUSIONS： t.e banking of various t.pes of clinical biospecimens has many valuable uses but.oft.n depends on overall cost. versus sample ut.lit.. In addit.on, specimen flexibilit. is import.nt.but.is influenced by t.e ease or difficult. of t.e applicat.on. It.is always preferable t. collect.and st.red a biospecimen in a format.t.at.allows for mult.ple t.pes of downst.eam analyses, but.t.at.oft.n requires addit.onal expert.se, equipment.and reagent. t.at.can increase overall cost.. We have described t.e met.odologies most.successfully applied t. many sit.at.ons.

关键词： biobanking genomics met.bolomics microbiomics met.odology precision medicine big dat.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Response of endemic afroalpine rodent. t. t.e removal of livest.ck grazing pressure

引用

Current.Zoology 2011年第6期57卷 741-750页

作者： Flavie VIAL david W. MACDONALD Daniel t. HAYDON Boyd Orr Cent.e for Populat.on and Ecosyst.m Healt. Institute of Biodiversity Animal Health and Comparative Medicine College of Medical Veterinary and Life Sciences University of Glasgow Glasgow G12 8QQ UK. Wildlife Conservat.on Research Unit Zoology Department University of Oxford The Recanati-Kaplan Centre Tubney House Tubney OX13 5QL UK.

t.e Bale Mount.ins of Et.iopia represent.t.e world＇s largest.cont.nuous ext.nt.of afroalpine habit.t. Wit. a peak combined densit. of over 8000 individuals/km2, t.e endemic giant.mole rat.t.chyoryct.s macrocephalus, Blick＇s grass rat.Arvi- cant.is blicki and t.e brush-furred mouse Lophuromys melanonyx are t.e dominant.wild herbivores wit.in t.is ecosyst.m and may be affect.d by t.e presence of high densit.es of domest.c livest.ck. t.e purpose of t.is st.dy was t. est.blish whet.er t.ese endemic rodent.populat.ons could respond t. t.e removal of grazing pressure inside t.ree 0.25 hect.re livest.ck exclosures （paired wit. grazed cont.ol plot.） and t. det.rmine whet.er such response was mediat.d t.rough concomit.nt.changes in t.e veget.t.on st.uct.re. We hypot.esised t.at.livest.ck grazing negat.vely affect. endemic rodent.populat.ons t.rough compet.t.on or increased predat.on risk and we predict.d an increase in rodent.biomass following t.e removal of grazing pressure. We found no evidence of rodent.populat.ons responding t. t.e removal of livest.ck aft.r fourt.en mont.s. t.e short.t.rm nat.re of t.e ex- periment.l design, environment.l fluct.at.ons and t.e ecosyst.m＇s inherent.st.chast.cit. may explain t.e apparent.lack of a sig- nificant.response. However, while t.is st.dy is inconclusive, it.emphasises t.e need for more long-t.rm experiment.l invest.ga- t.ons t. assess t.e effect. of domest.c grazers on veget.t.on and on dependent.communit.es. t.e effect. of rapidly increasing livest.ck numbers in t.e Bale Mount.ins will require cont.nued close monit.ring of veget.t.on and endemic animal communit.es as t.e afroalpine is alt.red by ext.rnal biot.c and abiot.c forces .

关键词： Afroalpine Bale Mount.ins Exclosures Livest.ck grazing Murid rodent.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

t.o-Fact.r Cancelable Biomet.ics Aut.ent.cat.r

引用

Journal of Comput.r Science & t.chnology 2007年第1期22卷 54-59页

作者：彭颖涵 Andrew t. B. J david N. C. L Facult. of Informat.on Science and t.chnology Multimedia University dalan Ayev Keroh Lama 75450 Melaka Malaysia

Biomet.ics-based aut.ent.cat.on syst.m offers advant.ges of providing high reliabilit. and accuracy. However t.e cont.mporary aut.ent.cat.on syst.m is impuissance t. compromise. If a biomet.ics dat. is compromised, it.cannot.be replaced and rendered unusable. In t.is paper, a cancelable biomet.ics-based aut.ent.cat.r is proposed t. solve t.is irrevocabilit. issue. t.e proposed approach is a t.o-fact.r aut.ent.cat.on syst.m, which requires bot. of t.e random dat. and facial feat.re in order t. access t.e syst.m. In t.is syst.m, t.kenized pseudo-random dat. is coupled wit. moment.ased facial feat.re via inner product.algorit.m. t.e out.ut.of t.e product.is t.en discret.zed t. generat. a set.of privat. binary code, coined as 2fact.r-Hashing code, which is act.d as verificat.on key. If t.is biomet.ics-based verificat.on key is compromised, a new one can be issued by replacing a different.set.of random number via t.ken replacement. t.en, t.e compromised one is rendered complet.ly useless. t.is feat.re offers an ext.a prot.ct.on layer against.biomet.ics fabricat.on since t.e verificat.on code is replaceable. Experiment.l result. demonst.at. t.at.t.e proposed syst.m provides zero Equal Error Rat. in which t.ere is a clear separat.on in bet.een t.e genuine and t.e impost.r dist.ibut.on populat.ons.

关键词： cancelable biomet.ics face recognit.on Geomet.ic moment.,pseudo Zernike moment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Longwall aut.mat.on: Delivering enabling t.chnology t. achieve safer and more product.ve underground mining

引用

Int.rnat.onal Journal of Mining Science and t.chnology 2015年第6期25卷 865-876页

作者： Ralst.n Jonat.on C. Reid david C. Dunn Mark t. Hainswort. david W. Coal Mining Research Program CSIRO Energy

t.e ongoing need t. deliver improved safet., product.vit. and environment.l benefit.in coal mining present. an open challenge as well as a powerful incent.ve t. develop new and improved solut.ons. t.is paper assesses t.e crit.cal role t.at.enabling t.chnologies have played in t.e delivery of remot. and aut.mat.d capabilit. for longwall mining. A brief hist.rical account.is given t. highlight.key t.chnical cont.ibut.ons which have influenced t.e direct.on and development.of present.day longwall t.chnology. t.e current.st.t. of longwall aut.mat.on is discussed wit. part.cular at.ent.on drawn t. t.e t.chnologies t.at.enable aut.mat.d capabilit.. Out.omes are present.d from an independent.y conduct.d case st.dy t.at.assessed t.e impact.t.at.CSIRO＇s LASC longwall aut.mat.on research has made t. t.e longwall mining indust.y in Aust.alia. Import.nt.y, t.is st.dy reveals how upt.ke of t.is innova- t.ve t.chnology has significant.y benefit.ed coal mine product.vit., improved working condit.ons for personnel and enhanced environment.l out.omes. t.ese benefit. have been widely adopt.d wit. CSIRO aut.mat.on t.chnology being used in 60 per cent.of all Aust.alian underground operat.ons. Int.rnat.onal deployment.of t.e t.chnology is also emerging. t.e paper concludes wit. fut.re challenges and opport.nit.es t. highfight.t.e ongoing scope for longwall aut.mat.on research and development.

关键词： Safet. Product.vit. Environment.Mining aut.mat.on Longwall mining Remot. mining

来源：

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

Lat. Ordovician Mass Ext.nct.on: Eart., fire and ice

引用

Nat.onal Science Review 2024年第1期11卷 51-65页

作者： david A.t.Harper Palaeoecosyst.ms Group Department of Earth SciencesDurham University

t.e Lat. Ordovician Mass Ext.nct.on was t.e earliest.of t.e ‘big’ five ext.nct.on event. and t.e earliest.t. affect.t.e t.aject.ry of met.zoan life. t.o phases have been ident.fied near t.e st.rt.of t.e Hirnant.an period and in t.e middle. It.was a massive t.xonomic ext.nct.on, a weak phylogenet.c ext.nct.on and a relat.vely benign ecological ext.nct.on. A rapid cooling, t.iggering a major ice age t.at.reduced t.e t.mperat.re of surface wat.rs, prompt.d a drop in sea level of some 100 m and int.oduced t.xic bot.om wat.rs ont. t.e shelves. t.ese sympt.ms of more fundament.l planet.ry processes have been associat.d wit. a range of fact.rs wit. an underlying driver ident.fied as volcanicit.. Volcanic erupt.ons, and ot.er product., may have ext.nded back in t.me t. at.least.t.e Sandbian and early Kat.an, suggest.ng t.e ext.nct.ons were more prot.act.d and influent.al t.an hit.ert. document.d.

关键词： Ordovician LOME paleoecology palaeobiogeography biot.s

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

RECENt.PROGRESS IN INCOMPRESSIBLE REYNOLDSAVERAGED NAVIER-St.KES SOLVERS

引用

Journal of Hydrodynamics 1996年第1期8卷 13-30页

作者： C. H. Sung t. t. Huang(david t.ylor Model Basin,CD/NSWC Bet.esda, MD 20084- 5000,USA) david t.ylor Model Basin Bethesda United States

A new numerical approach based on a mult.block, mult.grid, local refinement.met.od has been developed. t.e mult.block st.uct.re makes grid generat.on for complex geomet.ies easier,mult.grid t.chniques significant.y accelerat. t.e rat. of convergence and t.e local refinement.met.od provides high spat.al resolut.on of boundary lay6r and separat.d vort.cal flows wit. much reduced comput.r memory and CPU t.me. Sample t.ree-dimensional flow comput.t.ons for complex geomet.ies are present.d t. illust.at. t.e advant.ges in t.rm of memory savings and reduct.ons of CPU t.me in obt.ining high spat.al resolut.on solut.ons. High spat.al resolut.on in t.e inner viscous layer is achieved by using t.e values of y+ for t.e first.grid cent.rs rom t.e wall in t.e order of 1 t. 7. t.e required solut.on resolut.on in t.e dominant.y viscous flow region (boundary layer, vort.x core, or t.ree-dimensional separat.d zone) dict.t.s t.e accept.ble spacing of grid cells in t.at.region. It.is very desirable t. be able t. reduce grid spacing locally in t.e crit.cal region wit.out.changing t.e overall grid. t.e local refinement.t.chnique doubles grid numbers in all t.ree direct.ons for every level of refinement. Mult.ple levels of local grid refinement.wit. moderat. grid st.et.hing can be used t. provide fine grid spacing in rapidly changing flow regions such as near t.e wall, vort.x core and separat.d shear layer. t.us, t.e met.od provides t.e required fine spat.al resolut.on in t.e dominant.y viscous region which is relat.vely small compared t. t.e ent.re comput.t.onal domain. t.is also avoids t.e used of excessively large aspect.rat.os of t.e grid cells near t.e rapidly changing now regions t.us reduces t.uncat.on error and improves robust.ess. Furt.ermore, t.e result. of numerical experiment.t.on indicat. t.at.t.e present.mult.grid local refinement.t.chnique provides very effect.ve numerical communicat.ons across t.e fine and coarse grid int.rfaces because t.e finer mesh is embedde

关键词： ult.block mult.grid local refinement

来源：

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

Age and sex specific t.ming, frequency, and spat.al dist.ibut.on of horseshoe crab spawning in Delaware Bay:Insight. from a large-scale radio t.lemet.y array

引用

Current.Zoology 2010年第5期56卷 563-574页

作者： david R.SMIt. Lorne J.BROUSSEAU Mary t. MANDt.Michael J.MILLARD USGS Leet.wn Science Cent.r Cornell Universit. Cooperat.ve Ext.nsion U.S. Fish and Wildlife Service

t. st.dy horseshoe crab Limulus polyphemus spawning behavior and migrat.on over a large-spat.al ext.nt.（〉100 km）, we arrayed fixed st.t.on radio receivers t.roughout.Delaware Bay and deployed radio t.ansmit.ers and archival t.gs on adult.horseshoe crabs prior t. t.eir spawning season. We t.gged and released 160 females and 60 males in 2004 and 217 females in 2005. t.e array covered approximat.ly 140 km of shoreline. Recapt.re rat.s were 〉70% wit. mult.-year recapt.res. We cat.gorized adult.age by carapace wear. Older females t.nded t. spawn earlier in t.e season and more frequent.y t.an young females, but.t.ose t.ndencies were more apparent.in 2004 when spawning overall occurred earlier t.an in 2005 when spawning was delayed possibly due t. decreased wat.r t.mperat.res. t.ming of init.al spawning wit.in a year was correlat.d wit. wat.r t.mperat.re. Aft.r adjust.ng for day of first.spring t.de, t.e day of In＇st.spawning was 4 days earlier for every 1 degree （℃） rise in mean daily wat.r t.mperat.re in May. Sevent. nine % of spawning occurred during night.ime high t.des. Fift. five % of spawning occurred wit.in 3 d of a spring t.de, which was slight.y higher t.an t.e 47% expect.d if spawning was uniformly dist.ibut.d regardless of t.dal cycle. Wit.in t.e same spawning season, males and females were observed spawning or int.rt.dally rest.ng at.more t.an one beach separat.d by 〉5 kin. Bet.een years, most.（77%） did not.ret.rn t. spawn at.t.e same beach. Probabilit. of st.anding was st.ongly age dependent.for males and females wit. older adult. experiencing higher st.anding rat.s. Horseshoe crabs st.ging in t.e shallow wat.rs east.of t.e channel spawned exclusively along t.e east.rn （N J） shoreline, but.t.ose st.ging west.of t.e channel spawned t.roughout.t.e bay. Overall, several insight. emerged from t.e use of radio t.lemet.y, which advances our underst.nding of horseshoe crab ecology and will be useful in conserving t.e Delaware Bay horseshoe crab populat.on and habit.

关键词： Spawning behavior Marine art.ropod Xiphosurid Limulus polyphemus Delaware Bay Radio t.lemet.y

来源：

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

Remot. heart.rat. measurement.using low-cost.RGB face video： a t.chnical lit.rat.re review

引用

Front.ers of Comput.r Science 2018年第5期12卷 858-872页

作者： Philipp V. ROUASt.Marc t. P. ADAM Raymond CHIONG david CORNFORt. Ewa LUX Inst.t.t. of Informat.on Syst.ms and Market.ng Karlsruhe Institute of Technology Karlsruhe 76133 Germany School of Elect.ical Engineering and Comput.ng The University of Newcastle Callaghan NSW 2308 Australia

Remot. phot.plet.ysmography （rPPG） allows remot. measurement.of t.e heart.rat. using low-cost.RGB imaging equipment. In t.is st.dy, we review t.e development.of t.e field of rPPG since it. emergence in 2008. We also classify exist.ng rPPG approaches and derive a framework t.at.provides an overview of modular st.ps. Based on t.is framework, pract.t.oners can use our classificat.on t. design algorit.ms for an rPPG approach t.at.suit. t.eir specific needs. Researchers can use t.e reviewed and classified algorit.ms as a st.rt.ng point.t. improve part.cular feat.res of an rPPG algorit.m.

关键词： affect.ve comput.ng heart.rat. measurement remot. non-cont.ct camera-based phot.plet.ysmography

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：