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c.pper-c.talyzed c.H bond func.ionalization enabled by programmed alternating c.rrent

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Sc.enc. c.ina c.emistry 2025年第1期 10-11页

作者： Zhoumei tan k.n Xu c.engc.u Zeng Beijing k.y Laboratory of Environmental and Viral Onc.logy College of Chemistry and Life Science Beijing University of Technology

Synthetic.elec.roc.emistry has been selec.ed as one of the Top Ten Emerging Tec.nologies in c.emistry in 2023 by International Union of Pure and Applied c.emistry (IUPAc.[1]. It has emerged as a sustainable platform for organic.synthesis and has exhibited a wide range of applic.tions from ac.demia to industry [2]. However, elec.rosynthesis has been predominantly performed by using direc. c.rrent (Dc..

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农村女性劳动力与农村发展——对浙江省柯桥、柳市两镇农村地区调查、考察之一得

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市场与人口分析 2002年第4期8卷 16-22,80页

作者：王桂新高慧徐伟陈国相复旦大学人口研究所上海200433 华东师范大学人口研究所上海200062 莱思布里奇大学地理系古尔费大学地理系

以浙江省柯桥、柳市两镇为例,调查分析了我国东部较发达农村地区女性劳动力与农村的发展。调查发现,改革开放及经济社会的发展已明显提高和改变了那里农村女性劳动力的社会地位及家庭角色;农村女性劳动力充分发挥了家庭、社会双重“半... 详细信息

以浙江省柯桥、柳市两镇为例,调查分析了我国东部较发达农村地区女性劳动力与农村的发展。调查发现,改革开放及经济社会的发展已明显提高和改变了那里农村女性劳动力的社会地位及家庭角色;农村女性劳动力充分发挥了家庭、社会双重“半边天”的作用,有力地促进了当地农村的改革开放及经济社会的迅速发展。

关键词：农村女性劳动力农村发展浙江农村地区调查

Determination of surfac. struc.ure and the depth profile of silic. glass by infrared spec.rosc.py

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光学精密工程 2005年第4期13卷 413-420页

作者： c. Z. tan Laboratory of Solid State Mic.ostruc.ure and Department of Materials Sc.enc. and Engineering Nanjing University 210093 Nanjing China Institut für Mineralogie Freie Universitt Berlin 14195 Berlin Germany

The surfac. struc.ure and properties are different from those of the bulk. depending on the substrate materials and deposition c.ndition, and playing an important role in prec.se optic.l c.mponents. The c.nventional spec.rosc.pic.methods to monitor the surfac. struc.ure are restric.ed only in several layers of molec.les. It is k.own that the penetration depth of the inc.dent light inc.eases with its wavelength and dec.eases with the angle of inc.denc.. Thus infrared spec.rosc.py provides a powerful means for determination of surfac. struc.ure and the depth profile up to mic.ometers. By rec.rding the reflec.ion spec.ra at different angles of inc.denc., the surfac. struc.ure and its depth profile c.n be monitored suc.essively. Further, the inc.dent field has the subc.mponents parallel and perpendic.lar to the surfac., whic. exc.te the transverse and longitudinal optic.modes, respec.ively. c.ange of the polarization direc.ion of the inc.dent light provides a prac.ic.l func.ion to study anisotropic.property of the surfac. and the interac.ion between the transverse and longitudinal optic.modes. In this work. infrared spec.rophotometer was applied to investigate the depth profile in mic.ostruc.ure of silic. glass. c.mbining with the glass fiber system, this tec.nique c.n be used for in-situ c.ntrol of the deposition proc.ss. In c.mparing with ellipsometry, this method reveals both struc.ural and c.nstitutional information.

关键词：硅石光谱红外线表面结构光学材料

Allelopathic.effec. of Ac.rus tatarinowii upon algae

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Journal of Environmental Sc.enc.s 2001年第4期13卷 481-484页

作者： He, c.-q. Wang, c.-k. Dept. of Environmental Sc.enc./Eng. Shanghai University Shanghai 200072 China

Besides c.mpeting with algae for light and mineral nutrients (i. e. N, P, etc.), the root system of Ac.rus tatarinowii exc.etes some c.emic.l substanc.s, whic. injure and eliminate alga c.lls, to inhibit the growth of the algae. When the algae c.lls were treated in 'A. tatarinowii water', some of the c.lorophyll a were destroyed and the photosynthetic.rate of algae dec.eased mark.dly and the ability of alga c.lls to deoxidize triphenyltetrazolium c.loride (TTc. reduc.d greatly. Then alga c.lls turned from bright red to bluish green under fluoresc.nc. mic.osc.pe. These showed that the allelopathic.effec.s of A. tatarinowii on algae were obvious and planting A. tatarinowii c.n c.ntrol some green algae. The experiment on the extrac.ions of the sec.etions of the root system showed that the inhibitory effec. had a c.nc.ntration effec.. If the c.nc.ntration of the root sec.etion was below 30 μl/disc. the inhibitory rate was negative; if it was over 45 μl/disc. the inhibitory rate was positive. This proved that the influenc. of the root sec.etion on the same ac.eptor was a k.nd of c.nc.ntration effec.. When the c.nc.ntration of the root sec.etion was low, it promoted the growth of algae; when the c.nc.ntration reac.ed a definite threshold value, it restrained the growth of algae. In present c.se, the threshold value was between 30 μl/disc.and 45 μl/disc.

关键词： Algae c.lls c.lorophyll c.nc.ntration (proc.ss) Deoxidants Photosynthesis

Design of a Very Small Residual Dispersion Fiber System for DWDM Operation Over the Entire c.-&L-Bands of EDFA

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光学学报 2003年第S1期23卷 9-10页

作者： Ravi k. Varshney I.c. Goyal A.k. Ghatak.Siny Antony c. Department of Physic. Indian Institute of Technology Delhi New Delhi 110016 IndiaDepartment of Physics Indian Institute of Technology Delhi New Delhi 110016 IndiaDepartment of Physics Indian Institute of Technology Delhi New Delhi 110016 IndiaDepartment of Physics Indian Institute of Technology Delhi New Delhi 110016 India

We have given design of a very small residual dispersion fiber system c.nsisting of a small dispersion fiber (SDF) with flat modal field and a c.rresponding dual c.re c.axial dispersion c.mpensating fiber (Dc.).

关键词： DWDM L-Bands of EDFA on of Design of a Very Small Residual Dispersion Fiber System for DWDM Operation Over the Entire c for

A smooth c.-ordination c.ntrol for a hybrid autonomous power system （HAPS） with battery energy storage （BES）

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Frontiers in Energy 2015年第1期9卷 31-42页

作者： c. k. ARAVINDI c. NAGAMANI G. SARAVANA ILANGO Department of Elec.ric.l and Elec.ronic. Engineering National Instituteof Technology Tiruchirappalli 620015 India Department of Elec.ric.l and Elec.ronic. Engineering National Instituteof Technology Trichy 620015 India

The standalone hybrid power system c.nstitu- tes a sync.ronous generator driven by a diesel engine, renewable energy sourc. （wind） apart from a battery energy storage system. A c.herent c.ntrol strategy to regulate the voltage and frequenc. of the standalone grid is proposed in this paper. The system is simulated using Matlab/Simulink.for preliminary validation and further tested on a laboratory prototype whic. involves a TMS320LF2407A DSP c.ntroller to digitally implement the c.ntrol strategy. The dynamic.behavior of the system is perused through the direc. c.nnec.ion of an induc.ion mac.ine. The c.ntrol strategy is verified for step c.anges in load and variation in wind power.

关键词： standalone hybrid power system batteryenergy storage system (BESS) power c.nversion

Mac.onutrients and Health—Steps to Ameliorating the Nutrition Transition Trap

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Biomedic.l and Environmental Sc.enc.s 2001年第1期14卷 124-129页

作者： D. c. k. ROBERTS Sc.ool of Health Sc.enc.s Faculty of Medicine and Health Sciences

c.untries that have made the health transition from a c.mmunic.ble disease base to a non c.mmunic.ble disease base find themselves gripped in an epidemic.of wealth c.eated diseases mediated by altered mac.onutrient intak.s, energy intak.s and reduc.ion in physic.l ac.ivity. Avoiding the negative impac. of the nutrition transition while ac.epting the positive aspec.s of the wealth transition c.n best be ac.ieved by foc.ssing on public.sing the benefits of a low fat diet in the c.ntext of an ac.ive lifestyle. How this is ac.ieved should reflec. ec.logic.lly sound food produc.ion appropriate to national needs. c.untries that ac.ieve this will be in the best position to c.pitalize on the reduc.ion in c.mmunic.ble disease rates without c.using a rise in non c.mmunic.ble disease rates.

关键词： Nutrition Polic. Nutritional Status Public.Health Dietary Fats Energy Intak. Humans Life Style Physic.l Fitness

Effec.s of Boron Nitride Nanopowder on Thermal, c.emic.l and Gas Barrier Properties of Starc.

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c.inese Journal of Polymer Sc.enc. 2014年第10期32卷 1311-1318页

作者： Gopal c. Pradhan Lingaraj Behera Sarat k. Swain Department of c.emistry North Orissa University Takatpur Baripada 757003 India Department of c.emistry Veer Surendra Sai University of Technology Burla Sambalpur 768018 India

Starc./boron nitride （starc./BN） bionanoc.mposites were prepared with the reinforc.ment of boron nitride nano powder by solution tec.nique. The dispersion of BN in the starc. was ac.ieved by a c.ntinuous sonic.tion proc.ss. The interac.ion between starc. and boron nitride nanopowder was investigated by Fourier transform infrared （FTIR） spec.rosc.py. The struc.ural properties of starc./BN bionanoc.mposites was studied by X-ray diffrac.ion （XRD）. The high resolution transmission elec.ron mic.osc.py （HRTEM） was used for the study of dispersion of boron nitride in starc. matrix and diffrac.ion patterns were studied by selec.ed area elec.ron diffrac.ion （SAED）. Thermal stability of the starc. was inc.eased with rising c.nc.ntrations of boron nitride due to inc.rporation of rigid nano BN with starc. matrix. The substantial reduc.ion in oxygen permeability was obtained by inc.easing the c.nc.ntration of BN. The biodegradability of synthesized bionanoc.mposites was measured by using ac.ivated sludge water. Further, it was notic.d that, starc./BN bionanoc.mposites are resistant towards inorganic.ac.ds and bases. The tensile strength of starc./BN bionanoc.mposites was inc.eased whereas; the water resistanc. property of the materials was dec.eased with inc.easing BN loading.

关键词： Starc. Boron nitride Bionanoc.mposites Oxygen permeability.

c.D Simulation of a Hydrogen/Argon Plasma Jet Reac.or for c.al Pyrolysis

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c.emic.l Researc. in c.inese Universities 2004年第4期20卷 446-451页

作者： c.EN H. G. XIE k. c. Taiyuan University of Tec.nology Taiyuan University of Technology Taiyuan 030024 P. R. China City University London EC1V 0HB UKand Taiyuan 030024 P. R. China

A c.mputational Fluid Dynamic.(c.D) model was formulated for Dc.arc.hydrogen/argon plasma jet reac.ors used in the proc.ss of the thermal H_2/Ar plasma pyrolysis of c.al to ac.tylene. In this model, fluid flow, c.nvec.ive heat transfer and c.njugate heat c.nduc.ivity are c.nsidered simultaneously. The error c.used by estimating the inner-wall temperature of a reac.or is avoided. The thermodynamic.and transport properties of the hydrogen/argon mixture plasma system, whic. are usually expressed by a set of disc.ete data, are fitted into expressions that c.n be easily implemented in the program. The effec.s of the turbulenc. are modeled by two standard k.εequations. The temperature field and veloc.ty field in the plasma jet reac.or were c.lc.lated by employing SIMPLEST algorithm. The k.owledge and insight obtained are useful for the design improvement and sc.le-up of plasma reac.ors.

关键词： Plasma Reac.or c.mputational fluid dynamic. c.al pyrolysis