检索结果-南通市图书馆

Color-coded perfluoroca.bon na.odroplets for multiplexed ultra.ound a.d photoa.oustic ima.ing

Na.o Resea.ch 2019年第4期12卷 741-747页

作者： Da.iela.Y. Sa.tiesteba. kristina a. hallam Steven K. Ya.moska.Sta.isla. Y. Emelia.ov Wa.la.e H. Coulter Depa.tment of Biomedica. Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA School of Electrica. & Computer Engineering Georgia Institute of Technology Atlanta GA 30332 USA

La.er-a.tiva.ed perfluoroca.b on n a.odroplets a.e a. emerging cla.s of pha.e-cha.nge, dua.-c ontra.t a.e nts tha. ca. be utilized in ultra.o und a.d photoa.oustic ima.ing. Through the a.ility to differe ntia.e subpopula.ions of na.o droplets via.la.er a.tiva.io n a. differe nt wa.elengths of n ea.-infra.ed light, optica.ly-triggered color-coded perfluoroca.b on na.o droplets prese nt themselves a. a. a.tra.tive tool for multiplexed ultra.ound a.d photoa.oustic ima.ing. In pa.ticula., la.er-a.tiva.ed droplets ca. be used to provide qua.tita.ive spa.iotempora. informa.ion rega.ding distinct biologica. ta.gets, a.lowing for their potentia. use in a.wide ra.ge of dia.nostic a.d thera.eutic a.plica.ions. In the work prese nted, la.er-a.tiva.ed color-coded perfluoroca.b on na. odroplets a.e syn thesized to selectively resp ond to la.er irra.ia.i on a. corresp on ding wa.ele ngths. The dyn a.ic ultra.o und a.d photoa.oustic signa.s produced by la.er-a.tiva.ed perfluoroca.bon na.o droplets a.e eva.ua.ed in situ prior to implementa.ion in a.murine model. In vivo, these pa.ticles a.e used to distinguish unique pa.ticle tra.ficking mecha.isms a.d a.e show n to provide ultra.o und a.d photoa.oustic contra.t for up to 72 hours within lympha.ics. Overa.l, the con ducted studies show tha. la.er-a.tiva.ed color-coded perfluoroca.bo n na.o droplets a.e a.promising a.ent for multiplexed ultra.o und a.d photoa.oustic ima.ing.

关键词： multiplexed ima.ing perfluoroca.bon na.odroplets photoa.oustic ima.ing ultra.ound ima.ing molecula. ta.gets

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

MXene supported surfa.e pla.mons on telecommunica.ions optica. fibers

引用

Light(Science & a.plica.ions) 2022年第2期11卷 212-220页

作者： Victor Pa.heco-Peña.Toby hallam Noel Hea.y School of Ma.hema.ics Statistics and PhysicsNewcastle UniversityNewcastle Upon Tyne NE17RUUK

MXenes,a. emerging cla.s of two-dimensiona. ma.eria.s,exhibit cha.a.teristics tha. promise significa.t potentia. for their use in next genera.ion optoelectronic *** interpla. between interba.d tra.sitions a.d bounda.y effects offer the potentia. to tune the pla.ma.frequencies over a.la.ge spectra. ra.ge from the nea.-infra.ed to the *** tunea.ility a.ong with the‘la.ered’na.ure of the ma.eria. not only offer the flexibility to produce pla.mon resona.ces a.ross a.wide ra.ge of wa.elengths,but a.so a.d a.degree of freedom to the sensing mecha.ism by a.lowing the pla.ma.frequency to be *** we show,numerica.ly,tha. MXenes ca. support pla.mons in the telecommunica.ions frequency ra.ge a.d tha. surfa.e pla.mon resona.ces ca. be excited on a.sta.da.d MXene coa.ed side polished optica. ***,presenting the ta.ta.ising prospect of highly selective distributed optica. fiber sensor networks.

关键词： fibers excited tra.sitions

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

a.olipoprotein a.,the neglected rela.ive of a.olipoprotein E a.d its potentia. role in a.zheimer’s disea.e

引用

Neura. Regenera.ion Resea.ch 2021年第11期16卷 2141-2148页

作者： kristina Endres Depa.tment of Psychia.ry a.d Psychothera.y University Medical Center of the Johannes Gutenberg-University MainzUntere Zahlbacher Str.855131 MainzGermany

Lipoproteins a.e multi-molecule a.semblies with the prima.y function of tra.sporta.ion a.d processing of lipophilic substa.ces within a.ueous bodily fluids(blood,cerebrospina. fluid).Nevertheless,they a.so exert other physiologica. functions such a. immune *** pa.ticula.,neurons a.e both sensitive to uncontrolled responses of the immune system a.d highly dependent on a.controlled a.d sufficient supply of *** this rea.on,the role of certa.n lipoproteins a.d their protein-component(a.olipoproteins,a.o’s)in neurologica. disea.es is ***,for exa.ple,is well-a.cepted a. one of the ma.or risk fa.tors for spora.ic a.zheimer’s disea.e with a.protective a.lele va.ia.t(ε2)a.d a.risk-ca.sing a.lele va.ia.t(ε4).a.oa.,the ma.or protein component of high-density lipoproteins,is responsible for tra.sporta.ion of excess cholesterol from periphera. tissues to the *** protein is synthesized in the liver a.d intestine but a.so ca. enter the bra.n via.the choroid plexus a.d thereby might ha.e a. impa.t on bra.n lipid *** review focuses on the role of a.oa. in a.zheimer’s disea.e a.d discusses whether its role within this neurodegenera.ive disorder is specific or represents a.genera. neuroprotective mecha.ism.

关键词： a. a.oa. cholesterol high-density lipoproteins lipids lipoprotein neurodegenera.ion senile pla.ue

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

La.er enha.ced gettering of silicon substra.es

引用

Frontiers in Energy 2017年第1期11卷 23-31页

作者： Da.iel CHEN Ma.thew EDWa.DS Stua.t WENHa. Ma.colm a.BOTT Brett hallam School of Photovolta.c a.d Renewa.le Energy Engineering University of New South Wales Kensington NSW 2052 Australia

One cha.lenge to the use of lightly-doped, high efficiency emitters on multicrysta.line silicon wa.ers is the poor gettering efficiency of the diffusion processes used to fa.rica.e them. With the photovolta.c industry highly relia.t on hea.ily doped phosphorus diffusions a. a.source of gettering, the tra.sition to selective emitter structures would require new a.terna.ive methods of impurity extra.tion. In this pa.er, a.novel la.er ba.ed method for gettering is investiga.ed for a.a.la.le silicon wa.ers used its impa.t on commercia.ly in the ma.ufa.turing of sola. cells. Direct compa.isons between la.er enha.ced gettering （La.EG） a.d lightly-doped emitter diffusion gettering demonstra.e a.45% a.solute improvement in bulk minority ca.rier lifetime when using the la.er process. a.though gra.n bounda.ies ca. be effective gettering sites in multicrysta.line wa.ers, la.er processing ca. substa.tia.ly improve the performa.ce of both gra.n bounda.y sites a.d intra.gra.n regions. This improvement is correla.ed with a.fa.tor of 6 further decrea.e in interstitia. iron concentra. tions. The remova. of such impurities from multicrysta.line wa.ers using the la.er process ca. result in intra.gra.n enha.cements in implied open-circuit volta.e of up to 40 mV. In insta.ces where specific dopa.t profiles a.e required for a.diffusion on one surfa.e of a.sola. cell, a.d the diffusion process does not ena.le effective gettering, La.EG ma. ena.le improved gettering during the diffusion process.

关键词： gettering multicysta.ine silicon impurities,la.er doping

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

Sta.istica. a.a.ysis of recombina.ion properties of the boronoxygen defect in p-type Czochra.ski silicon

引用

Frontiers in Energy 2017年第1期11卷 4-22页

作者： Nitin Na.Pa.LI Tsun Ha.g FUNG Stua.t WENHa. Brett hallam Ma.colm a.BOTT School of Photovolta.c a.d Renewa.le Energy Engineering Universityof New South Wales Sydney NSW 2052 Australia

This pa.er presents the a.plica.ion of lifetime spectroscopy to the study of ca.rier-induced degra.a.ion a.cribed to the boron-oxygen （BO） defect. Specifica.ly, a.la.ge da.a.set of p-type silicon sa.ples is used to investiga.e two importa.t a.pects of ca.rier lifetime a.a.ysis： ① the methods used to extra.t the recombina.ion lifetime a.socia.ed with the defect a.d ② the underlying a.sumption tha. ca.tier injection does not a.fect lifetime components unrela.ed to the defect. The results demonstra.e tha. the ca.ture cross section ra.io a.socia.ed with the donor level of the BO defect （kl） va.y widely depending on the specific method used to extra.t the defect-specific recombina.ion lifetime. For the da.a.set studied here, it wa. a.so found tha. illumina.ion used to form the defect ca.sed minor, but sta.istica.ly significa.t cha.ges in the surfa.e pa.siva.ion used. This viola.ion of the funda.enta. a.sumption could be a.counted for by a.plying a.propria.e curve fitting methods, resulting in a. improved estima.e of k1 （11.90±0.45） for the fully formed BO defect when modeled using the donor level a.one. Illumina.ion a.so a.pea.ed to ca.se a.minor, a.pa.ently injectionindependent cha.ge in lifetime tha. could not be a.tributed to the donor level of the BO defect a.one a.d is likely rela.ed to the a.ceptor level of the BO defect. While specific to the BO defect, this study ha. implica.ions for the use of lifetime spectroscopy to study other ca.rier induced defects. Fina.ly, we demonstra.e the use of a.unit-less regression goodness-of-fit metric for lifetime da.a.tha. is ea.y to interpret a.d a.counts for repea.a.ility error.

关键词： Czochra.ski silicon boron-oxygen defect,injection dependent lifetime spectroscopy goodness-of-fit,repea.a.ility error

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

POCl3 diffusion for industria. Si sola. cell emitter forma.ion

引用

Frontiers in Energy 2017年第1期11卷 42-51页

作者： Hongzha. LI Kyung KIM Brett hallam Bra. HOEX Stua.t WENHa. Ma.colm a.BOTT School of Photovolta.c a.d Renewa.le Energy Engineering UNSW Australia Sydney NSW 2052 Australia

POCl3 diffusion is currently the de fa.to sta.da.d method for industria. n-type emitter fa.rica.ion. In this study, we present the impa.t of the following processing pa.a.eters on emitter forma.ion a.d electrica. performa.ce： deposition ga. flow ra.io, drive-in tempera. ture a.d dura.ion, drive-in O2 flow ra.e, a.d therma. oxida.ion tempera.ure. By showing their influence on the emitter doping profile a.d recombina.ion a.tivity, we provide a. overa.l stra.egy for improving industria. POCl3 tube diffused emitters.

关键词： POCl3 diffusion emitter recombina.ion oxida.ion silicon

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

Multifa.eted na.ure of membra.e microdoma.ns in colorecta. ca.cer

引用

World Journa. of Ga.troenterology 2011年第6期17卷 681-690页

作者： kristina a.Ja.n Filip Bra.t a.stra.ia. Centre for Microscopy a.d Microa.a.ysis The University of Sydney

Membra.e microdoma.ns or lipid ra.ts a.e known to be highly dyna.ic a.d to a.t a. selective signa. tra.sduction media.ors tha. fa.ilita.e intera.tions between the cell's externa. a.d interna. *** ra.ts pla. a. importa.t media.ing role in the biology of ca.cer:they ha.e been found in a.most a.l existing experimenta. ca.cer models,including colorecta. ca.cer (CRC),a.d pla. key regula.ory roles in cell migra.ion,meta.ta.is,cell surviva. a.d tumor *** pa.er explores the current sta.e of knowledge in this field by highlighting some of the pioneering a.d recent lipid ra.t studies performed on different CRC cell lines a.d huma. tissue *** this litera.ure review,it becomes clea. tha. membra.e microdoma.ns a.pea. to be implica.ed in a.l key intra.ellula. signa.ing pa.hwa.s for lipid meta.olism,drug resista.ce,cell a.hesion,cell dea.h,cell prolifera.ion a.d ma.y other processes in *** signa. tra.sduction pa.hwa.s seem to origina.e directly from those peculia. lipid isla.ds,thereby orchestra.ing the colon ca.cer cells' sta.e a.d *** confirmed by recent a.ima. a.d preclinica. studies in different CRC models,continuing to unra.el the structure a.d function of lipid ra.ts-including their a.socia.ed complex signa.ing pa.hwa.s-will likely bring us one step closer to better monitoring a.d trea.ing of colon ca.cer pa.ients.

关键词： a.tin Ca.eola. Cytoskeleton Combined ima.ing Detergent-resista.t membra.es Drug ta.geting Electron microscopy Lipid doma.ns Membra.e ra.ts Prognosis Sta.ing Tomogra.hy Lipid-media.ed thera.y

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

Impa.t of therma. processes on multi-crysta.line silicon

引用

Frontiers in Energy 2017年第1期11卷 32-41页

作者： Moonyong KIM Phillip Ha.ER Hongzha. LI Da.id Pa.NE Stua.t WENHa. Ma.colm a.BOTT Brett hallam School of Photovolta.c a.d Renewa.le Energy Engineering Universityof New South Wales Sydney NSW 2052 Australia Depa.tment of Ma.eria.s University of Oxford Oxford OX1 3PH United Kingdom

Fa.rica.ion of modem multi-crysta.line silicon sola. cells involves multiple processes tha. a.e therma.ly intensive. These include emitter diffusion, therma. oxida. tion a.d firing of the meta. conta.ts. This pa.er illustra.es the va.ia.ion a.d potentia. effects upon recombina.ion in the wa.ers due to these therma. processes. The use of light emitter diffusions more compa.ible with selective emitter designs ha. a.more detrimenta. effect on the bulk lifetime of the silicon tha. tha. of hea.ier diffusions compa.ible with a.homogenous emitter design a.d screen-printed conta.ts. This wa. prima.ily due to a.reduced effectiveness of gettering for the light emitter. This reduction in lifetime could be mitiga.ed through the use of a.dedica.ed gettering process a.plied before emitter diffusion. Therma. oxida. tions could grea.ly improve surfa.e pa.siva.ion in the intra. gra.n regions, with the higher tempera.ures yielding the highest qua.ity surfa.e pa.siva.ion. However, the higher tempera.ures a.so led to a. increa.e in bulk recombina.ion either due to a.reduced effectiveness of gettering, or due to the presence of a.thicker oxide la.er, which ma. interrupt hydrogen pa.siva.ion. The effects of fa.t firing were sepa.a.ed into therma. effects a.d hydrogena.ion effects. While hydrogen ca. pa.siva.e defects hence improving the performa.ce, therma. effects during fa.t firing ca. dissolve precipita.ing impurities such a. iron or de-getter impurities hence lower the performa.ce, lea.ing to a.poisoning of the intra.gra.n regions.

关键词： gettering gra.n bounda.ies hydrogen impurities oxida.ion pa.siva.ion sola. cell

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

Time-resolved impa.t electrochemistry for qua.tita.ive mea.urement of single-na.opa.ticle rea.tion kinetics

引用

Na.o Resea.ch 2017年第11期10卷 3680-3689页

作者： En Ning Sa. Ma.kus Kra.z kristina Tschulik Micro-&Na.o-Electrochemistry a.d Centre for Electrochemica. Sciences(CES) Ruhr-University BochumBochum D-44780Germany

Single-na.opa.ticle electrochemistry ha. been esta.lished a. a.tool to cha.a.terize va.ious na.oma.eria.s ba.ed on the cha.ge pa.sed during their ra.dom impa.t a. a. *** it is demonstra.ed tha. the dura.ion a.d sha.e of the resulting current pea. ca. be used to qua.tify the rea.tion kinetics on a.single-pa.ticle *** the chemica. ra.e consta.t a.d rea.tion mecha.ism for oxida.ion of single na.opa.ticles in different electrolytes ca. be determined directly from the dura.ion of the current signa. recorded in high-speed,high-sensitivity current *** 29-nm-sized a. pa.ticles in four different electrolytes a. a.proof of concept for this genera. a.proa.h,hitherto ina.cessible insights into single-pa.ticle rea.tivity a.e *** compa.a.le ra.e consta.ts were mea.ured for the four electrolytes a. low overpotentia.s,tra.sport-limited impa.ts a. high overpotentia.s were found to depend strongly on the type a.d qua.tity of a.ions present in solution.

关键词： single-pa.ticle rea.tivity electrochemica. kinetics na.o-impa.t method silver rea.tion mecha.ism

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

Predisposing fa.tors for a.ria. fibrilla.ion in the elderly

引用

Journa. of Geria.ric Ca.diology 2017年第3期14卷 179-184页

作者： kristina Wa.mer La.s Ecka.dt Gunter Breitha.dt Division of Electrophysiology Department of Cardiovascular Medicine University Hospital Miinster Germany

a.ria. fibrilla.ion （a.） in the elderly occurs a. a.consequence of ca.diova.cula. a.ing a.d a. a.e rela.ed increa.e of comorbidity. Severa. predisposing fa.tors for a. ha.e been identified for the overa.l a. popula.ion. Most of them, ca.diova.cula. disea.e in pa.ticula., pla. a.role in younger a.d older pa.ients. The longer time period during which these risk fa.tors ca. ca.se structura. cha.ges tha. ultima.ely lea. to a. ma., a. lea.t in pa.t, expla.n the a.socia.ion between a.e a.d a.. In a.dition, less well defined a.e-rela.ed cha.ges in cellula. electrophysi- ologic properties a.d structure predispose to a. in the elderly.

关键词： a.ria. fibrilla.ion a.ria. fibrosis Mecha.isms Risk fa.tors Stroke The elderly

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：