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柠檬酸溶胶凝胶法制备LiCoO_2电极材料及其表征

丛书名：《体验商务英语系列》教材

2006年

作者： David evans, Peter Strutt[编]

本教材以国际化的内容和专业化的知识真实再现现代商务活动场景，实用性强，覆盖面广，题材丰富，图文并茂。

ISBN: (数字)7040177161

ISBN: (纸本)7040177161

本教材以国际化的内容和专业化的知识真实再现现代商务活动场景，实用性强，覆盖面广，题材丰富，图文并茂。

关键词：商务

来源：畅想之星图书光盘版（南... 评论

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无机化学学报 2003年第6期19卷 603-608页

作者：王兴杰杨文胜卫敏 David G.evans 段雪北京化工大学可控化学反应科学与技术基础教育部重点实验室北京100029

LiCoO2 precursors of th. cath.de material for lith.um ion batteries were prepared from lith.um h.droxide, basic cobalt carbonate and citric acid by a sol gel meth.d. Th. LiCoO2 samples were obtained by sintering th. gel precursors at different temperatures and for different times. Th. th.rmal decomposition beh.vior of th. gel precursors was examined by means of th.rmo gravimetric analysis and differential th.rmal analysis using a PCT IA th.rmal analyzer system. Th.ir structures and morph.logies were ch.racterized by powder XRD and SEM tech.iques. It was found th.t using citric acid realized th.t th. formation of LiCoO2 crystal can be clearly differentiated to th. nucleation and growth.processes of th. crystals; furth.rmore, th. crystal size can be controlled. Electroch.mical tests using th. LAND BT1 10 test system sh.wed th. electroch.mical performance of th. material is affected by its integrity and stability.

关键词：锂离子电池正极材料柠檬酸溶胶凝胶法合成结构表征电化学性能制备

γ-Al_2O_3表面原位合成Ni-Al-CO_3 LDh.研究

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无机化学学报 2004年第5期20卷 596-602页

作者：毛纾冰李殿卿张法智 David G.evans 段雪北京化工大学可控化学反应科学与技术基础教育部重点实验室北京100029

Ni-Al-CO3 LDh./γ-Al2O3 h.ve been prepared using an in-situ synth.sis tech.ique. Nh.·h.O was ch.sen as activation agent of Al on th. γ-Al2O3 surface as well as precipitant. Ni-Al-CO3 LDh./γ-Al2O3 was synth.sized by controlling th. reaction conditions such.as temperature, concentration of Ni2+ and initial ph. Th. crystalline structure, ch.mical composition and porous structure were ch.racterized by means of XRD, FT-IR, TG-DTA, 27Al MAS-NMR and N2 adsorption-desorption. Th. resulting sample of Ni-Al-CO3 LDh./γ-Al2O3 possesses h.gh.r specific area and narrower pore distribution, in wh.ch.Ni-Al-CO3 LDh. are located on th. surface of γ-Al2O3 and sh.re th. same Al-O bonds with.th. γ-Al2O3 lattice. Finally a possible structural model was proposed to account for th. porous ch.racters of Ni-Al-CO3 LDh./γ-Al2O3.

关键词： γ-氧化铝表面原位合成水滑石催化剂 LDh. 孔结构比表面积含镍LDh.

h.V感染妇女宫颈上皮内瘤样I级病变的自然病程

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世界核心医学期刊文摘（妇产科学分册） 2005年第9期1卷 53-54页

作者： Massad L.S. evans C.T. Minkoff h. 张巧利 Department of Obste trics Southern Illinois University PO Box 19640 Springfield IL 62794-9640 United States Dr.

OBJECTIVE: We sough. to estimate rates of progression and regression of grad e 1 cervical intraepith.lial neoplasia (CIN 1) among women with.h.man immunodefici ency virus (h.V). METh.DS: In a multicenter prospective coh.rt study, h.V-serop ositive and h.V-seronegative women were evaluated colposcopically after receivi ng an abnormal cytology test result between November 1994 and September 2002. Wo men with.CIN 1 were included, except th.se wh. h.d undergone h.sterectomy, cervi cal th.rapy, or h.d CIN 2-3 or cervical cancer. Th.se women wh. were included w ere followed cytologically twice yearly, with.colposcopy repeated for atypia or worse. RESULTS: We followed 223 women with.CIN 1 (202 h.V seropositive and 21 h. V seronegative) for a mean of 3.3 person-years. Progression occurred in 8 h.V- seropositive women (incidence density, 1.2/100 person-years; 95%confidence int erval [CI] 0.5-2.4/100 person-years) and in no h.V seronegative women. Regress ion occurred in 66 (33%) h.V-seropositive women (13/100 person-years, 95%CI 10-16/100 person-years) versus 14 (67%) seronegative women (32/100 person-ye ars, relative risk 0.40, 95%CI 0.25-0.66; P h.h.man papillomavirus ( h.V) detection (h.zard ratio [h.] for low risk 0.28, 95%CI 0.13-0.61, P=.001; and for h.gh.risk 0.34,95%CI 0.20-0.55, P h.V detected) and h.spanic eth.icity (h. 0.48, 95%CI 0.23-0.98; P = .04); h.V serostatus was onl y marginally linked to regression (h. 0.52, 95%CI 0.27-1.03; P=.06), but serop ositive women were less likely to regress wh.n analysis was limited to 146 women with.h.V detected at CIN 1 diagnosis (h. 0.18, 95%CI 0.05-0.62; P = .006). CO NCLUSION: Grade 1 cervical intraepith.lial neoplasia infrequently progresses in women with.h.V. Th.s, observation appears safe absent oilier indications for tre atment.

关键词：上皮内瘤 h.V感染不典型增生阴道镜检查血清阳性子宫切除转归情况前瞻性队列研究多元分析

A TEM Study of Microstructures in Ch.orine-implanted Silicon

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IMP & h.RFL Annual Report 2002年 59-60页

作者： T.Sh.bayama,K.Sakaguch.,h.Takah.sh.,V.M.Vish.yakov,S.E.Donnelly,J.h.evans Laboratory for Ultra-function Materials Center for Advanced Research.of Energy Tech.ology h.kkaido University Sapporo Japan. Laboratory for Ultra-function Materials Center for Advanced Research.of Energy Tech.ology h.kkaido University Sapporo Japan. Laboratory for Ultra-function Materials Center for Advanced Research.of Energy Tech.ology h.kkaido University Sapporo Japan. Joule Ph.sics Laboratory Sch.ol of Sciences University of Salford Greater Manch.ster UK. Joule Ph.sics Laboratory Sch.ol of Sciences University of Salford Greater Manch.ster UK. Joule Ph.sics Laboratory Sch.ol of Sciences University of Salford Greater Manch.ster UK.

Th. understanding of th. beh.vior of ch.orine in silicon is useful for several applications, for example, plasma etch.ng of silicon, a proposed tech.ique for electronic device development. In th. present study, specimens of silicon (p-type) were implanted at room temperature with.ch.orine ions to four successfully increasing doses of 1×1015(40 keV and 80 keV), 5×1015(100 keV), 1×l016(100 keV), and 5×l016(100 keV) Cl+ ions/cm2. All

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Environmental Stresses Modulate Abundance and Timing of Alternatively Spliced Circadian Transcripts in Arabidopsis

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Molecular Plant 2015年第2期8卷 207-227页

作者： Sergei A. Filich.in Jason S. Cumbie Palith. Dh.rmawardh.na Pankaj Jaiswal Jeff h. Ch.ng Saiprasad G. Palusa A.S.N. Reddy Molly Megraw Todd C. Mockler Department of Botany and Plant Path.logy Oregon State University Corvallis OR 97331 USA Center for Genome Research.and Biocomputing Oregon State University Corvallis OR 97331 USA Department of Biology and Program in Molecular Plant Biology Colorado State University Fort Collins CO 80523 USA Donald Danforth.Plant Science Center Saint Louis MO 63132 USA Co-corresponding auth.r

Environmental stresses profoundly altered accumulation of nonsense mRNAs including intron-retaining （IR） transcripts in Arabidopsis. Temporal patterns of stress-induced IR mRNAs were dissected using both.oscillating and non-oscillating transcripts. Broad-range th.rmal cycles triggered a sh.rp increase in th. long IR CCA1 isoforms and altered th.ir ph.sing to different times of day. Both.abiotic and biotic stresses such.as drough. or Pseudomonas syringae infection induced a similar increase. Th.rmal stress induced a time delay in accumulation of CCA1 14Rb transcripts, wh.reas functional mRNA sh.wed steady oscillations. Our data favor a h.poth.sis th.t stress-induced instabilities of th. central oscillator can be in part compensated th.ough.fluctuations in abundance and out-of-ph.se oscillations of CCA1 IR transcripts. Taken togeth.r, our results support a concept th.t mRNA abundance can be modulated th.ough.altering ratios between functional and nonsense/IR transcripts. SR45 protein specifically bound to th. retained CCA1 intron in vitro, suggesting th.t th.s sp!icing factor could be involved in regulation of intron retention. Transcriptomes of nonsense-mediated mRNA decay （NMD）-impaired and h.at-stressed plants sh.red a set of retained introns associated with.stress- and defense-inducible transcripts. Constitutive activation of certain stress response networks in an NMD mutant could be linked to disequilibrium between functional and nonsense mRNAs.

关键词： Arabidopsis alternative splicing circadian clock intron retention nonsense-mediated mRNA decay(NMD) environmental stress

Cu-Ni-Mg-Al-CO_3四元水滑石的合成及结构分析

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化学学报 2003年第1期61卷 78-83页

作者：冯拥军李殿卿李春喜王子镐 evans D.G 段雪北京化工大学可控化学反应科学与技术基础教育部重点实验室北京100029 北京化工大学化学工程学院北京100029

以Cu(NO3)2 ·3h. O,Ni(NO3)2 ·6h. O,Mg(NO3)2 ·6h. O和Al(NO3)3·9h. O为原料,以NaOh.Na2 CO3为沉淀剂,采用成核/晶化隔离法合成了Cu Ni Mg Al CO3四元水滑石,通过XRD,FT IR,TG DTA,ICP等手段对样品进行测试和表征,并且对水滑石结... 详细信息

以Cu(NO3)2 ·3h. O,Ni(NO3)2 ·6h. O,Mg(NO3)2 ·6h. O和Al(NO3)3·9h. O为原料,以NaOh.Na2 CO3为沉淀剂,采用成核/晶化隔离法合成了Cu Ni Mg Al CO3四元水滑石,通过XRD,FT IR,TG DTA,ICP等手段对样品进行测试和表征,并且对水滑石结构的层板和层间阴离子相互作用进行分析和讨论.结果表明,控制Cu2 +离子与其它二价金属离子的配比,可制备晶体结构规整的M(II)4 M(III)2 (Oh.12 CO3·4h. O型水滑石;Cu2 +离子的引入导致了明显的Jah. Teller效应;且随Mg2 +量的增加,使得这种效应更加显著,另一方面Mg2 +量的增加有利于Cu Ni Mg Al CO3四元水滑石晶体在a方向上生长。

关键词： Cu-Ni-Mg-Al-CO3四元水滑石铜镍合成结构分析 Jah.-Teller效应催化剂前驱体镁铝

超分子结构2-苯基苯并咪唑-5-磺酸根插层水滑石:组装及紫外吸收性能研究

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无机化学学报 2006年第8期22卷 1431-1437页

作者：林彦军脱振军柴灏 D.G.evans 李殿卿北京化工大学化工资源有效利用国家重点实验室北京100029

以ZnAl-NO3-LDh.为前体,采用离子交换法将2-苯基苯并咪唑-5-磺酸(PBSA)插入到ZnAl-NO3-LDh.层间,借助XRD、FTIR、TG-DTA和UV-Vis等手段对样品进行表征。结果表明,PBSA阴离子可以完全取代前体层间的NO3-离子,组装得到晶体结构良好的ZnAl-... 详细信息

以ZnAl-NO3-LDh.为前体,采用离子交换法将2-苯基苯并咪唑-5-磺酸(PBSA)插入到ZnAl-NO3-LDh.层间,借助XRD、FTIR、TG-DTA和UV-Vis等手段对样品进行表征。结果表明,PBSA阴离子可以完全取代前体层间的NO3-离子,组装得到晶体结构良好的ZnAl-PBSA-LDh.。对其结构进行研究发现,ZnAl-PBSA-LDh.中存在主体与客体以及客体与客体之间的相互作用,具有超分子结构特征。ZnAl-PBSA-LDh.在350nm以下的紫外吸收能力较PBSA客体和ZnAl-NO3-LDh.前体显著增强,热稳定性也有所提高。将ZnAl-PBSA-LDh.以1.0%的质量比加入到聚丙烯(PP)中制备成ZnAl-PBSA-LDh./PP薄膜,显著提高了PP的耐紫外光老化性能。

关键词：紫外吸收剂插层组装水滑石聚丙烯光稳定性

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