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心理科学 2004年第1期27卷 69-71页

作者：毕鸿燕彭聃龄中国科学院心理研究所北京100101 北京师范大学心理学院脑与认知科学研究所北京100875

采用定量与定性相结合的研究方法 ,对 6～ 8岁儿童理解时间副词的能力进行了初步探查 ,结果表明 :(1 )不同年龄儿童对时间副词的理解能力不同。 6岁和 7岁儿童初步形成了对现在时间副词和过去时间副词的理解能力 ,萌发了对将来时间副词... 详细信息

采用定量与定性相结合的研究方法 ,对 6～ 8岁儿童理解时间副词的能力进行了初步探查 ,结果表明 :(1 )不同年龄儿童对时间副词的理解能力不同。 6岁和 7岁儿童初步形成了对现在时间副词和过去时间副词的理解能力 ,萌发了对将来时间副词的理解能力 ;8岁儿童已具有了对现在时间副词和过去时间副词的理解能力 ,基本上具有了对将来时间副词的理解能力。 (2 )儿童在理解时间副词时多种策略并存。随着年龄的增长 ,有效策略的生成能力有了明显的提高 ,8岁儿童已有 90

关键词： 6-8岁儿童过去时间副词现在时间副词将来时间副词理解能力理解策略

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C16H14SNF分子中不共面共轭环上π轨道通过键的相互作用的研究

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化学学报 1987年第11期45卷 1053-1060页

作者：周公度金声李奇刘若庄北京大学化学系北京师范大学化学系北京师范大学化学系北京

本文根据我们测定的C16H14SNF（1）和C16H16SNF（2）晶体结构数据,用MNDO2方法进行分子轨道研究,发现1和2的几何构型虽然相近,但其分子轨道中的原子轨道组成有着质的差异:在HOMO和临近HOMO的占据分子轨道中,2的两个苯环的π轨道彼此没... 详细信息

本文根据我们测定的C16H14SNF（1）和C16H16SNF（2）晶体结构数据,用MNDO2方法进行分子轨道研究,发现1和2的几何构型虽然相近,但其分子轨道中的原子轨道组成有着质的差异:在HOMO和临近HOMO的占据分子轨道中,2的两个苯环的π轨道彼此没有相互作用;1的两个夹角为80°的苯环的π轨道同时出现在一个分子轨道中,彼此通过（?）C=N—键导通,显示出相互作用,与实验观察到的核磁共振谱一致.

关键词：共面 MNDO 原子分子 SNF 苯环

Effect of osmotic shock on the redox system in plasma membrane of Dunaliella salina

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Cell Research 1996年第1期6卷 31-38页

作者： CHEN SI XUE CHI CHIONG YEN XIN ZHI JIAO (Institute of Plant Physiology, Chinese Academy of Sciences, Shanghai 200032, china.)(Biology department, East china normal university,Shanghai 200062, china.) Biology department East China Normal University Shanghai 200062 China.

The unicellular halotolerant alga Dunaliella salina had the ability to oxidize NADH and reduce Fe(CN)63-. The redox reactions were to some extent stimulated by slight hyperosmotic shock (2.0 mol/L → 2.6 mol/L NaCl), butmarkably inhibited by abrupt hyperosmotic shock (2.0mol/L → 3.5 mol/L NaCl) and hypoosmotic shock (2.0mol/L → 1.0 mol/L NaCl; 2.0 mol/L→0.67 mol/L NaCl).With the adaptation of algal cells to osmotic shock by accumulating or degrading intracellular glycerol, the plasmalemma redox activities were also restored. The O2 uptake stimulated by NADH could be promoted by FA and SHAM. Hypoosmotic shock increases the basal respiration rate of alga cells, but weakened the stimulating effects of NADH, FA and SHAM on O2 uptake. On the other hand, hyperosmotic shock reduced the basal respiration rate, but relatively enhanced the above effects of NADH, FA and SHAM. H+ extrusion of alga cells was inhibited by NADH and stimulated by Fe(CN)63- Vanadate and DES could inhibit H+ efflux, but had little effect in the presence of NADH and Fe(CN)63-. Both hyperand hypoosmotic shock stimulated H+ extrusion. This effect could be totally inhibited by vanadate and DES, but almost unaffected by 8-hydroxyquinoline. It was suggested that H+-ATPase probably played a more important role in H+ extrusion and osmoregulation under the conditions of osmotic shock.

关键词： Osmotic shock Dunaliella salina plasmalemma redox system

Colony development and physiological characterization of the edible blue-green alga,Nostoc sphaeroides (Nostocaceae,Cyanophyta)

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Progress in Natural Science:Materials International 2008年第12期18卷 1475-1483页

作者： Zhongyang Deng~(a,c,d,e) Qiang Hu~b Fan Lu~c Guoxiang Liu~a Zhengyu Hu~a a State Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,china b department of Applied Biological Sciences.Arizona State university,Polytech Campus,ISTBⅢ,Mesa,AZ 85212,USA c Algaen Corporation,925 West Northwest Boulevard,Winston Salem,NC 27101.USA d department of Biology,Hubei normal university,Huangshi 435002,china e Graduate School of the Chinese Academy of Sciences.beijing 100049,china [a]State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China [b]department of Applied Biological Sciences Arizona State University Polytech Campus ISTB III Mesa AZ 85212 USA [c]Algaen Corporation 925 West Northwest Boulevard Winston Salem NC 27101 USA [d]department of Biology Hubei Normal University Huangshi 435002 China [e]Graduate School of the Chinese Academy of Sciences Beijing 100049 China

The edible blue-green alga,Nostoc sphaeroides K(?)tzing,is able to form microcolonies and spherical *** has been used as a potent herbal medicine and dietary supplement for centuries because of its nutraceutical and pharmacological ***,lim- ited information is available on the development of the spherical macrocolonies and the environmental factors that affect their structure. This report described the morphogenesis of *** from single trichomes to *** the process,most structural features of macrocolonies of various sizes were dense maculas,rings,the compact core and the formation of liquid core;and the filaments within the macrocolonies showed different lengths and arrays depending on the sizes of *** temperature and light intensity also strongly affected the internal structure of *** microcolonies further increased in size to form 30 mm mac- rocolonies,the colonies differentiated into distinct outer,middle and inner *** filaments of the outer layer showed higher max- imum photosynthetic rates,higher light saturation point,and higher photosynthetic efficiency than those of the inner layer;whereas the filaments of the inner layer had a higher content of chlorophyll a and phycobiliproteins than those of the outer *** results obtained in this study were important for the mass cultivation of *** as a nutraceutical product.

关键词： Macrocolony Morphogenesis Nostoc sphaeroides Photosynthesis

Functional Characterization of a Putative Nitrate Transporter Gene Promoter from Rice

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Acta Biochimica et Biophysica Sinica 2006年第11期38卷 795-802页

作者： Ting-Zhang HU~(1,3) Kai-Ming CAO~1 Mian XIA~2 Xi-Ping WANG~(1,2*) 1 department of Biochemistry,School of Life Science Fudan university,Shanghai 200433,china 2 National Center for Molecular Crop Design,Weiming Kaituo Agriculture Biotech Co.,Ltd.,beijing 100085,china 3 department of Biology,Chongqing Three Gorges university,Chongqing 404000,china departmentofBiochemistry SchoolofLifeScienceFudanUniversityShanghai200433China NationalCenterforMolecularCropDesign WeimingKaituoAgricultureBiotechCo.Ltd.Beijing100085China

Drought is one of the most significant abiotic stresses that influence plant growth *** analysis revealed that OsNRT1.3,a putative nitrate transporter gene in rice,wasinduced by *** confirm if the OsNRT1.3 promoter can respond to drought stress,a 2019 bpupstream sequence of OsNRT1.3 was *** OsNRT1.3 promoter fragments were generated by5′-deletion,and fused to the β-glucuronidase (GUS) *** chimeric genes were introduced into ***2019::GUS,NRT1196::GUS and NRT719::GUS showed similar expression patterns in seeds,roots,leaves and flowers in all transgenic rice,and GUS activity conferred by different OsNRT1.3 promoterfragments was significantly upregulated by drought stress,indicating that OsNRT1.3 promoter responds todrought stress and the 719 bp upstream sequence of OsNRT1.3 contains the drought response elements.

关键词： deletion analysis drought nitrate transporter OsNRT1.3 promoter

Bone-implant interfacial Stress analysis in osseointegrated lower limber prosthesis

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Bone-implant interfacial Stress analysis in osseointegrated ...

Intertemporal Capital Asset Pricing Model for the Insider Intertemporal Capital Asset Pricing Model for the Insider

第八届全国生物力学学术会议

作者： DONG Xiang~1,FAN Yu-bo~2,ZHANG Ming~1 (1.department of Health Technology and Informatics,The Hong Kong Polytechnic university,china 2.department of Bioengineering,beijing university of Aeronautics & Astronautics,beijing 100084, china)

An osseointegrated bone-implant complexity model is established to analyze how implant geometry parameters affect the bone-implant interfacial stress distribution,which may eventually affect the long-term stability of implant *** a new contact interfacial condition is suggested to replace the tied interfacial condition used in early studies.

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Intertemporal Capital Asset Pricing Model for the Insider In...