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太阳能电池光载流子辐射复合的红外特性仿真与试验

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红外与毫米波学报 2014年第3期33卷 248-255页

作者：刘俊岩秦雷龚金龙王扬 a. Ma.delis 哈尔滨工业大学机电工程学院黑龙江哈尔滨150001 Center for a.va.ced Diffusion Wa.e Technologies(Ca.IFT) Mechanical and Industrial EngineeringUniversity of TorontoTorontoOntario MS5 3G8Canada

激光诱发硅太阳能电池产生载流子，由于少数载流子的复合而发射红外辐射.基于一维载流子传输方程，建立了调制激光诱发PN结少数载流子密度模型，利用该模型仿真分析了载流子寿命、扩散率、表面复合率及光电压对辐射复合产生红外辐射信... 详细信息

激光诱发硅太阳能电池产生载流子，由于少数载流子的复合而发射红外辐射.基于一维载流子传输方程，建立了调制激光诱发PN结少数载流子密度模型，利用该模型仿真分析了载流子寿命、扩散率、表面复合率及光电压对辐射复合产生红外辐射信号的影响.利用InGa.s红外探测器（0.9-1.7μm）记录激光诱发载流子辐射复合的红外辐射信号，用数字锁相放大器提取了幅值与相位.通过频率扫描试验获得了多晶硅太阳能电池载流子传输参数.

关键词：载流子复合辐射复合红外辐射太阳能电池

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Influence of brown stink bug feeding, pla.ting da.e a.d sa.pling time on common smut infection of ma.ze

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Insect Science 2014年第5期21卷 564-571页

作者： Xinzhi Ni Micha.l D. Toews G. Da.id Buntin Ja.es E. Ca.penter a.isa.Huffa.er Eric a. Schmelz Ted E. Cottrell Za.d a.do USDa.a.S Crop Genetics and Breeding Research Unit Tifton GA 31793 Depa.tment of Entomology University of Georgia TiftonGA 31793-5766 Depa.tment of Entomology University of Georgia Griffin GA 30223 USDa.a.S Crop Protection and Management Research Unit Tifton GA 31793 USDa.a.S Center for Medical Agricultural and Veterinary Entomology Gainesville FL 32608 USDa.a.S Southeast Fru# and Tree Nut Research Laboratory Byron GA 31008 USDa.a.S South Atlantic Area Office 950 College Station Road Athens GA 30605 USA

Phytopa.hogen infections a.e frequently influenced by both biotic a.d a.iotic fa.tors in a.crop field. The effect of brown stink bug, Euschistus servus （Hemiptera. Penta.omida.）, feeding a.d pla.ting da.e a.d sa.pling time on common smut （Ustila.o ma.dis） infection percenta.e of ma.ze pla.ts wa. exa.ined in 2005 a.d 2006, a.d 2010 a.d 2011, respectively. Brown stink bug a.ult feeding on ma.ze hybrid ＂DKC6971＂ a. flowering in 2005 a.d 2006 did not influence smut infection percenta.e when exa.ined using 3 trea.ments （i.e., 0 a.ult, 5 a.ults, a.d 5 a.ults mixed with the smut spores）. The smut infection percenta.es were 〈 3% （n =12） in the 3 trea.ments. The smut infection percenta.e a.ong the 4 weekly sa.plings wa. the sa.e, so wa. na.ura. a.la.oxin conta.ina.ion a. ha.vest a.ong the trea.ments. The 2nd experiment showed tha. pla.ting da.e did not a.fect the smut infection percenta.e in either 2010 or 2011. But, the smut infection percenta.e from the postflowering sa.pling wa. grea.er tha. preflowering sa.pling in both yea.s. The smut infection percenta.e va.ied a.ong the germpla.m lines in 2010, but not in 2011. This study demonstra.ed tha. brown stink bug feeding a. flowering ha. no effect on smut infection in ma.ze, a.d the best time for smut eva.ua.ion would be a.ter flowering. The tempera.ure a.d precipita.ion might ha.e a.so influenced the percenta.e of smut-infected ma.ze pla.ts during the 4 yea.s when the experiments were conducted. The simila.ity between kernel-colonizing U. ma.dis a.d a.pergillus fla.us infections a.d genotype × environment intera.tion were a.so discussed.

关键词： common smut Euschistus servus pla.ting da.e Ustila.o ma.dis

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全球化与民族主义

当代世界与社会主义 2002年第4期 16-22页

作者：约翰.a.霍尔高静宇

全球化作为最时髦的概念已取代了后现代主义的概念.我在这里所关注的焦点是民族国家面对当代经济力量时的生存能力.我们首先要注意两点:一是民族国家不顾及所谓的新全球文化模式而被强加于身的自我限制;二是那些谨慎的全球化理论家的论... 详细信息

全球化作为最时髦的概念已取代了后现代主义的概念.我在这里所关注的焦点是民族国家面对当代经济力量时的生存能力.我们首先要注意两点:一是民族国家不顾及所谓的新全球文化模式而被强加于身的自我限制;二是那些谨慎的全球化理论家的论点受到关注,他们认为民族国家不仅被自己掏空了,而且被民族独立的'新'要求极大地动摇了存在的根基.

关键词：全球化民族主义后现代主义社会发展

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Dia.nostic cha.lenges in Sa.la.disea.e

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Open Journa. of Genetics 2013年第2期3卷 46-49页

作者： Jessica.N. Ha.tley Micha.l S. Sa.ma. Fra.ces a. Booth Lorne Sea.gea.t Da.id a. Wenger Jens Wrogema.n a.zeddin a. Mha.ni Depa.tment of Biochemistry a.d Medica. Genetics University of Manitoba Winnipeg Canada Program of Genetics and Metabolism Winnipeg Canada Depa.tment of Biochemistry a.d Medica. Genetics University of Manitoba Winnipeg Canada Program of Genetics and Metabolism Winnipeg Canada Department of Pediatrics and Child Health University of Manitoba Winnipeg Canada Depa.tment of Pedia.rics a.d Child Hea.th University of Manitoba Winnipeg Canada Diagnostic Services Manitoba University of Manitoba Winnipeg Canada Depa.tment of Pedia.rics a.d Child Hea.th University of Manitoba Winnipeg Canada Section of Pediatric Neurology University of Manitoba Winnipeg Canada Depa.tment of Ra.iology Section of Pediatric Radiology University of Manitoba Winnipeg Canada Lysosoma. Disea.es Testing La.ora.ory Thomas Jefferson University Philadelphia USA

Sia.ic a.id stora.e disea.e (Sa.la.disea.e) is a. a.tosoma. recessive disorder ca.sed by muta.ions in a.lysosoma. sia.ic a.id export protein, SLC17a. (OMIM #604369). This disorder wa. initia.ly described in Northern Finla.d but more recently ha. been reported in pa.ients of other ethnicities. We describe the clinica. presenta.ion a.d the neuroima.ing findings of two non-Finnish children where a.dia.nosis of Sa.la.disea.e wa. suspected on the ba.is of bra.n ma.netic resona.ce ima.ing. The biochemica. confirma.ion of this dia.nosis posed a.cha.lenge a. both pa.ients ha. eleva.ed percent free urine sia.ic a.id but biochemica. a.a.yses in fibrobla.ts were not conclusive;therefore, molecula. testing wa. necessa.y for confirma.ion of the dia.nosis. The described encounters demonstra.e the importa.ce of pursuing confirma.ory molecula. dia.nostic testing when a.sia.ic a.id stora.e disorder is suspected.

关键词： Sia.ic a.id Sa.la Disea.e Lysosoma. SLC17a.

Exposure to dieta.y mercury a.ters cognition a.d beha.ior of zebra.finches

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Current Zoology 2017年第2期63卷 213-219页

作者： John R SWa.DLE Tessa.R. DIEHL Ca.well E, Ta.LOR a.ron S. Fa.a.E Jessica.L. BENSON Neil R. HUCKSTEP Da.iel a. CRISTOL Biology Depa.tment College of William and Mary Institute for Integrative Bird Behavior Studies Williamsburg VA 23187-8795 USA Biologica. Sciences Virginia Tech 1405 Perry Street Blacksburg VA 24061 USA

Environmenta. stressors ca. nega.ively a.fect a.ia. cognitive a.ilities, potentia.ly reducing fitness, for exa.ple by a.tering response to preda.ors, displa. to ma.es, or memory of loca.ions of food. We expa.d on current knowledge by investiga.ing the effects of dieta.y mercury, a.ubiquitous en- vironmenta. polluta.t a.d known neurotoxin, on a.ia. cognition. Zebra.finches Ta.niopygia.gut- ta.a.were dosed for their entire lives with sub-letha. levels of mercury, a. the environmenta.ly rele- va.t dose of 1.2 pa.ts per million. In our first study, we compa.ed the dosed birds with controls of the sa.e a.e using tests of three cognitive a.ilities： spa.ia. memory, inhibitory control, a.d color a.socia.ion. In the spa.ia. memory a.sa., birds were tested on their a.ility to lea.n a.d remember the loca.ion of hidden food in their ca.e. The inhibitory control a.sa. mea.ured their a.ility to ig- nore visible but ina.cessible food in fa.or of a.lea.ned beha.ior tha. provided the sa.e rewa.d. Fina.ly, the color a.socia.ion ta.k tested ea.h bird＇s a.ility to a.socia.e a.specific color with the presence of hidden food. Dieta.y mercury nega.ively a.fected spa.ia. memory a.ility but not inhibi- tory control or color a.socia.ion. Our second study focused on three beha.iora. a.sa.s not tied to a.specific skill or problem-solving： a.tivity level, neophobia. a.d socia. domina.ce. Zebra.finches exposed to dieta.y mercury throughout their lives were subordina.e to, a.d more a.tive tha., con- trol birds. We found no evidence tha. mercury exposure influenced our metric of neophobia. Together, these results suggest tha. sub-letha. exposure to environmenta. mercury selectively ha.ms neurologica. pa.hwa.s tha. control different cognitive a.ilities, with complex effects on be- ha.ior a.d fitness.

关键词： a.ima. beha.ior ecotoxicology cognition mercury spa.ia. memory zebra.finch.

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产权制度与法治

经济社会体制比较 2007年第5期 1-7页

作者：罗纳德.a.卡斯倪斐美国波士顿大学法学院安徽师范大学政法学院

法治有利于实现社会公正和社会福利,而法治取决于对产权的界定和保护。本文从阐述财产与产权制度之间的关系入手,对产权制度作用于法治的机理进行了剖析,指出即使是与法治要求最相符合的制度,都难以有效阻止所有的法律变革或者完全消除... 详细信息

法治有利于实现社会公正和社会福利,而法治取决于对产权的界定和保护。本文从阐述财产与产权制度之间的关系入手,对产权制度作用于法治的机理进行了剖析,指出即使是与法治要求最相符合的制度,都难以有效阻止所有的法律变革或者完全消除政府官员的自由裁量权。因此,只有对法律变革作出适当规定并留出适当的自由裁量权,才能有效地实行法治。

关键词：财产产权制度法治

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Bila.ered semiconductor gra.hene na.ostructures with periodica.ly a.ra.ged hexa.ona. holes

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Na.o Resea.ch 2015年第4期8卷 1250-1258页

作者： Dmitry G. Kva.hnin Peter Va.cso Liubov Yu. a.tipina.Geza.I. Ma.k La.zlo P. Biro Pa.el B. Sorokin Leonid a. Chernoza.onskii Ema.uel Institute of Biochemica. Physics 4 Kosigina Street Moscow 119334 Russia Institute of Technica. Physics a.d Ma.eria.s Science Research Centre for Natural Sciences H- 1525 Budapest P.O. Box 49 Hungary Technologica. Institute of Superha.d a.d Novel Ca.bon Ma.eria.s 7a Centralnaya Street Troitsk Moscow 142190 Russia

We present a.theoretica. study of new na.ostructures ba.ed on bila.ered gra.hene with periodica.ly a.ra.ged hexa.ona. holes （bila.ered gra.hene a.tidots）. Our a. initio ca.cula.ions show tha. fa.rica.ion of hexa.ona. holes in bigra.hene lea.s to connection of the neighboring edges of the two gra.hene la.ers with forma.ion of a.hollow ca.bon na.ostructure sheet which displa.s a.wide ra.ge of electronic properties （from semiconductor to meta.lic）, depending on the size of the holes a.d the dista.ce between them. The results were a.ditiona.ly supported by wa.e pa.ket dyna.ica. tra.sport ca.cula.ions ba.ed on the numerica. solution of the time-dependent Schr/Sdinger equa.ion.

关键词： ga.hene a.tidots electronic properties DFT

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信息科学:新的集成观(3)

情报科学 1994年第4期 56-61+33页

作者： a.德本斯 ,卢泰宏 ,刘子明

“信息专业人员”一词何时首次使用并不十分清楚,可以肯定该词是起源于最近,并在60年代末已经开始得到接受。信息专业人员这一概念是70年代期间由美国情报科学学会(a.IS)推广开来的,那是一个对于信息国际社会中的重要性的认识日益增加... 详细信息

“信息专业人员”一词何时首次使用并不十分清楚,可以肯定该词是起源于最近,并在60年代末已经开始得到接受。信息专业人员这一概念是70年代期间由美国情报科学学会(a.IS)推广开来的,那是一个对于信息国际社会中的重要性的认识日益增加的时期。任何试图理解信息专业人员含义的尝试都必须包括大量的思考:①“专业人员”一词的含义是什么?②如何区分信息专业人员与非信息人员?在工作中有多少被识别出来?他们在哪里被雇佣?他们从事哪种工作?③他们给他们的工作带来什么样的技能?④他们在哪里受教育?⑤现代社会的哪些要素使他们的工作成为必要或者是重要的。

关键词：专业人员计算机专家教学大纲加工者图书馆学家

5-Methylcytosine RNa.Methyla.ion in a.a.idopsis Tha.ia.a

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Molecula. Pla.t 2017年第11期10卷 1387-1399页

作者： Xuea. Cui Zhe Lia.g Lisha.Shen Qia. Zha.g Shengjie Ba. Yuke Geng Bin Zha.g Vonny Leo Lea. a. Va.dy Tiega.g Lu Xia.feng Gu Ha. Yu Biotechnology Resea.ch Institute Chinese Academy of Agricultural Sciences Beijing 100081 China Depa.tment of Biologica. Sciences a.d Tema.ek Life Sciences La.ora.ory National University of Singapore 117543 Singapore Singapore Institute of Medica. Biology Agency for Science Technology and Research (A^+STAR) 8A Biomedical Grove #06-06 Immunos 138648 Singapore Singapore

5-Methylcytosine （m^5C） is a.well-cha.a.terized DNa.modifica.ion, a.d is a.so predomina.tly reported in a.unda.t non-coding RNa. in both proka.yotes a.d euka.yotes. However, the distribution a.d biologica. functions of m^5C in pla.t mRNa. rema.n la.gely unknown. Here, we report tra.scriptome-wide profiling of RNa.m^5C in a.a.idopsis tha.ia.a.by a.plying m^5C RNa.immunoprecipita.ion followed by a.deep- sequencing a.proa.h （m^5C-RIP-seq）. LC-MS/MS a.d dot blot a.a.yses revea. a.dyna.ic pa.tern of m^5C mRNa.modifica.ion in va.ious tissues a.d a. different developmenta. sta.es, m^5C-RIP-seq a.a.ysis identified 6045 m^5C pea.s in 4465 expressed genes in young seedlings. We found tha. m^5C is enriched in coding sequences with two pea.s loca.ed immedia.ely a.ter sta.t codons a.d before stop codons, a.d is a.socia.ed with mRNa. with low tra.sla.ion a.tivity. We further demonstra.ed tha. a. RNa.（cytosine-5）-methyl- tra.sfera.e, tRNa.specific methyltra.sfera.e 4B （TRM4B）, exhibits m^5C RNa.methyltra.sfera.e a.tivity. Muta.ions in TRM4B displa. defects in root development a.d decrea.ed m^5C pea.s. TRM4B a.fects the tra.script levels of the genes involved in root development, which is positively correla.ed with their mRNa.sta.ility a.d m^5C levels. Our results suggest tha. m^5C in mRNa.is a.new epitra.scriptome ma.ker ina.a.idopsis, a.d tha. regula.ion of this modifica.ion is a. integra. pa.t of gene regula.ory networks underlying pla.t development.

关键词： 5-methylcytosine (m^5C) a.a.idopsis RNa.methyla.ion TRM4B root development