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Biomimetic preparation of elastomeric fibers with micro/nano structures on the surfaces

Progress in Natural Science:Materials International 2012年第5期22卷 493-501页

作者： Quanyong Liu a,Liqun Zhang c,Lei Jiang a,b a Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education,School of chemistry and Environment,Beihang University,beijing 100191,PR China b beijing National Laboratory for Molecular Sciences(MNLMS),Key Laboratory of Organic Solids,{3. of chemistry,chinese academy of Sciences,beijing 100190,PR China c State Key Laboratory of Organic-Inorganic Composites,beijing University of Chemical Technology,beijing 10002.,PR China [a] Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry and Environment Beihang University Beijing 100191 PR China [b] beijing National Laboratory for Molecular Sciences (MNLMS) Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 PR China [c] State Key Laboratory of Organic–Inorganic Composites Beijing University of Chemical Technology Beijing 100029 PR China

Bioinspired by the spinning of spider silks,the biomimetic preparation of elastomeric fibers with micro/nano structures on the surfaces was attempted,and as a result,three types of ultrafine fullvulcanized powdered nitrile-butadiene rubber(UFPNBR)/thermoplastic polyurethane(TPU) fibers were *** first fiber was only decorated by the micron-sized grooves on the surface,and the second fiber was dotted by both the micron-sized grooves and nanometer-sized spheres on the surface,while the third fiber was helical and with a concave-convex *** biomimetic preparation mainly consisted of four steps,and the formation mechanism was described as an integrated mechanism of diffusion,coagulation,self assembly,and microphase *** micro/nano structures on the fibers were controlled by changing the mass ratio of UFPNBR to TPU and environment of vertical *** UFPNBR/TPU elastomeric fibers were hoped to have an integrated function of superhydrophobicity,self cleaning,and mechanical improvement of toughness or strength.

关键词： Biomimetic preparation Elastomeric fiber Micro/nano structure Self assembly Spider silk

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Benzene Clusters Dissociation in the Intense Laser Field

Benzene Clusters Dissociation in the Intense Laser Field

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Ⅻ International Symposium on Small Particles and Inorganic Clusters

作者： Hongtao Liu Shutao Sun Zichao TangState key Laboratory of Molecular Reaction Dynamics institute of chemistry {2. {3. of Sciences beijing 100080

＜正＞ Field ionization of benzene clusters in the intense laser field is experimentally investigated using a femtosecond laser and reflection time of flight mass spectrometer. The dissociation products in intense laser field are obviously different from the products that benzene clusters were interacted by nanosecond laser. The femtosecond laser pulse width is 100 fs at λ=800

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Modeling and Simulation of Heat Transfer in Loaded Continuous Heat Treatment Furnace

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材料热处理学报 2004年第5B期25卷 764-768页

作者： KANGJin-wu HUANGTian-you PURUSHOTHAMANRadhakrishnan DepartmentofMechanicalEngineering TsinghuaUniversityBeijingChina CHTE WorcesterPolytechnicInstituteWorcesterMA01609USA

Continuous furnaces are widely used in the heat treatment of mass-produced parts. However, the heating up process of parts in continuous furnace is still decided by experience. In this paper the heat transfer in the continuous furnace is formulated firstly. The heat balance in each zone is discussed and equations are given. Coupled with the model for heat transfer between workpieces and furnace and the heat transfer in the workload as well presented in the former developed CHT-6/ for batch furnaces, a program CHT- for continuous furnaces was developed. The model deals with two typical movements of parts: continuous or step by step. The moving speed of parts and load pattern can be optimized based on the calculated temperature distributions and curves, especially, the fastest heated and slowest-heated temperature-distance profiles. A case study is carried out for the heat treatment of a kind of hook-shaped part. The calculated results are analyzed and in good agreement with the measured ones.

关键词：热处理传热连续加热炉建模热平衡

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Do Globular Clusters Harbor Black Holes?

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chinese Journal of Astronomy and Astrophysics 2001年第4期1卷 291-295页

作者： Xian-Zhong Zheng (National Astronomical Observatories, chinese academy of Sciences, {2. 100012.E-mail:zxz@*** National Astronomical Observatories Chinese Academy of Sciences Beijing 100012

It has been firmly established that there exists a tight correlation be- tween the mass of the central black hole and velocity dispersion (or luminosity) in elliptical galaxies, 'pseudobulges' and bulges of galaxies, although the nature of this correlation still remains nuclear. We explore the possibility of extrapolating such a correlation to less massive, spherical systems like globular clusters. In particular, motivated by the apparent success in the globular cluster M15, we present an estimate of the central black hole mass for a number of globular clusters with available velocity dispersion data.

关键词： black hole physics-globular clusters: general - galaxies: general

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Crossing ω=-1 in Gauss-Bonnet Brane World with Induced Gravity

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Communications in Theoretical Physics 2005年第11期 948-954页

作者： CAI Rong-Gen~1 ZHANG Hong-Sheng~1 WANG An-Zhong~2. institute of Theoretical Physics,the chinese {2. of Sciences,P.O.Box 2.3.,{3. 100080,China2.CASPER,Department of Physics,Baylor University,101 Bagby Avenue,Waco,TX 76706,USA institute of Theoretical Physics the Chinese Academy of Sciences P.O. Box 2735 Beijing 100080 China CASPER Department of Physics Baylor University 101 Bagby Avenue Waco TX 76706 USA

Recent type Ia supernovas data seemingly favor a dark energy model whose equation of state ω(z)crosses-1 very recently,which is a much more amazing problem than the acceleration of the *** this paper we showthat it is possible to realize such a crossing without introducing any phantom component in a Gauss-Bonnet brane worldwith induced gravity,where a four-dimensional curvature scalar on the brahe and a five-dimensional GaussBonnet termin the bulk are *** this realization,the Gauss-Bonnet term and the mass parameter in the bulk play a crucialrole.

关键词： dark energy brahe world scenario phantom divide

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Targeting at SUR2./Kir6.1 subtype of ATP-sensitive potassium channel opener natakalim improves pressure overload-induced heart failure

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沈阳药科大学学报 2008年第S1期25卷 96-97页

作者： TANG Yuan1,2.LONG Chao-liang2.WANG Hai2.1.{3. of Materia Medica,College of Pharmacy,Third Military Medical University,Chongqing 40003.,China 2.Department of Cardiovascular Pharmacology,beijing {3. of Pharmacology and Toxicology,beijing 100850,China)

Objective To explore the new stratigies targeting at SUR2./Kir6.1 subtype against pressure overload-induced heart *** Pressure overload-induced heart failure was induced in Wistar rat by abdominal aortic banding(AAB).The effects of natakalim(1,3.9 mg·kg-1·d-1,10 weeks)were assessed on myocardial hypertrophy and heart failure,cardiac histology,vasoactive compounds,and gene *** working heart and isolated tail artery helical strips were used to examine the influence of natakalim on heart and resistant *** Ten weeks after the onset of pressure overload,natakalim therapy potently inhibited cardiac hypertrophy and prevented heart *** inhibited the changes of left ventricular haemodynamic parameters,reversed the increase of heart mass index,left ventricular weight index and lung weight index *** examination demonstrated that there were no significant hypertrophy and fibrosis in hearts of pressure overload rat treated with *** examination of heart revealed well-organized myofibrils with mitochondria grouped along the periphery of longitudinally oriented fibers in natakalim group *** content of serum NO and plasma PGI2.was increased,while that of plasma ET-1 and cardiac tissue hydroxyproline,ANP and BNP mRNA was down-regulated in natakalim-treated *** at concentrations ranging from 0.01-100 μM had no effects on isolated working heart derived from Wistar rats;however,natakalim had endothelium-dependent vasodilation effects on the isolated tail artery helical strips precontracted with *** These results indicate that natakalim improves heart failure due to pressure overload by activating KATP channel SUR2./Kir6.1 subtype and reversing endothelial dysfunction.

关键词： natakalim pressure overload KATP channel SUR2./Kir6.1

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非共晶相变材料应用于太阳能吸热蓄热器的数值分析

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太阳能学报 2004年第2期25卷 195-199页

作者：侯欣宾袁修干李劲东航天五院总体专业技术部北京100086 北京航空航天大学飞行器与应用力学系北京100083

通过计算分析发现对于目前的吸热蓄热器结构,采用相变发生在一个温度区间的非共晶熔盐混合物作为相变材料可以较好的提高吸热蓄热器的整体性能。主要表现在明显地提高相变材料的利用率、减小换热管工质出口温度波动、减小容器表面最大... 详细信息

通过计算分析发现对于目前的吸热蓄热器结构,采用相变发生在一个温度区间的非共晶熔盐混合物作为相变材料可以较好的提高吸热蓄热器的整体性能。主要表现在明显地提高相变材料的利用率、减小换热管工质出口温度波动、减小容器表面最大温度及容器表面温度变化,经过合理的设计还可以减小整体系统的质量。分析结果可以作为吸热器设计的参考。

关键词：太阳能热发电相变材料蓄热热分析

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Influence of omeprazole on pharmacokinetics of domperidone given as free base and maleate salt in healthy chinese patients

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Acta Pharmacologica Sinica 2007年第8期28卷 1243-1246页

作者： Yi-fan ZHANG~1 Xiao-yan CHEN~1 Xiao-jian DAI~1 Yi-ni ZHANG~(1,2. Qi-zhi LIU~3.Hua-ling YU~2.Da-fang ZHONG~(1,4) ~1Shanghai institute of Materia Medica,{3. {2. of Sciences,Shanghai 2.12.3.China ~2.henyang Pharmaceutical University,Shenyang 110016,China ~3.8} Hanmi Pharm,{3. 1013.2.China Shanghai institute of Materia Medica Chinese Academy of SciencesShanghai201203China

Aim:To investigate the influence of omeprazole on the pharmacokinetics ofdomperidone given as free base and maleate ***:An open,randomized,2.period crossover study with a washout period of 7 d was conducted in 10healthy chinese,male *** each study period,the patients were adminis-tered a single oral dose of 10 mg domperidone as free base or maleate salt on d 1,2. mg omeprazole twice daily on d 2.and 3.and once on d 4.A single dose of 10 mgdomperidone as free base or maleate salt was taken at 4 h after administration ofomeprazole on d *** samples were collected on d 1 and 4 after the adminis-tration of domperidone,and the plasma concentrations of domperidone were de-termined by a sensitive liquid chromatography-tandem mass {2. ***:For free-base domperidone,pretreatment with omeprazole resulted in a16% decrease in maximum concentration(Cmax),compared with administrationalone（P2.no pharmacokinetic parameters were significantly *** the free baseand maleate salt were administered alone,no differences were found in any param-eters between the 2.*** contrast,when they were administered in thepresence of omeprazole,the Cmaxof domperidone given as free base was lower（2..9%）than that given as maleate salt（P<0.05）.Conclusion:Pretreatment ofomeprazole does not affect the absorption of domperidone maleate,but leads to amoderately decreased rate of absorption of the free base.

关键词： domperidone omeprazole maleate salt free base pharmacokinetics

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Nutrient and Litter Patterns in Three Subalpine Coniferous Forests of Western Sichuan, China

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Pedosphere 2006年第3期16卷 380-389页

作者： LIN Bo LIU Qing WU Yan HE Hai Chengdu institute of Biology Chinese Academy of Sciences Chengdu 610051 （China） Graduate University of the chinese academy of Sciences Beijing 100059 （China）

Investigations were conducted to quantify litterfall, and litter and nutrient accumulation in forest floor, and to acquire information on litter decomposition and nitrogen and phosphorus release patterns in three different subalpine coniferous forests, a plantation （P1）, a secondary forest （SF）, and a primitive forest （PF）, in western Sichuan, China. The litter trap method was used to evaluate litterfall with the litterbag method being utilized for litter decomposition. Seasonal patterns of litterfall were similar in the three forests, with two peaks occurring in September-November and March-May. The plantation revealed an annual litterfall of 4.3. x 103.kg ha-1, which was similar to those of SF and PF, but P1 had a lower mass loss rate and a higher C/N ratio. The C/N ratio may be a sound predictor for the decomposition differences. N concentrations of leaf litter in both the secondary forest and primitive forest increased first and then decreased, and the percentages of their final/initial values were 108.9% and 99.9%, respectively. P concentration in the three forests increased by the end of the study. The results of litterfall and decomposition indicated that in the plantation the potential to provide nutrients for soil organic matter was similar to those of SF and PF; however, its slower decomposition rate could result in a somewhat transient accumulation of litter in the forest floor.

关键词： accumulation decomposition litterfall nutrient release subalpine coniferous forests

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chinese Text Emotion Classification Based On Emotion Dictionary

Chinese Text Emotion Classification Based On Emotion Diction...

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2.10 IEEE 2.d Symposium on Web Society

作者： Jun Li~1,Yuemei Xu~2.Hao Xiong~2.and Yan Wang~3.1.National Network New Media Engineering Research Center,{3. of Acoustics,{2. {3. of Sciences beijing,China 2.High-performance Network Laboratory,{3. of Acoustics,{2. {3. of Sciences beijing,China 3.National Computer System Engineering Research {3. of China beijing,China

＜正＞Recently,much work have been done on text emotion ***,they mainly focused on the emotions expressed by authors instead of the *** addition, researches on simplified chinese text emotion classification are extremely *** this paper,we proposed a simplified chinese text emotion classification based on readers’ emotions. {2. of documents with readers’ emotion tag are used as raw text sets,and Vector Space Model is used to represent each *** emotion dictionary is created semi-automatically by using WordNet to build text *** then train a Support Vector Machine classifier on preprocessed data with four emotion classes,and compared the predicate results with that from Naive Bayes *** results indicate that our approach performs much better on classify accuracy and efficiency.

关键词： Emotion Classification Vector Space Model Support Vector Machine Mutual Information

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