电致伸缩材料非线性力学计算中的几个问题

由于电致伸缩材料本构方程的非线性特性,该材料在力学理论计算、材料参数测试中会出现一定的困难.同时,电场体积力在计算与实验中也应纳入考虑范围.文章给出了一种合适的电致伸缩材料的本构方程,并指出电场体积力的表达式取为Maxwell应力较为合适.利用一种简单模型,给出了0阶近似下的2种处理方式(考虑电场体积力与否)的近似解以及一般处理方式下的解析解.利用推导结果得到了这3种不同处理方式下的位移、应力场数值算例.结果表明,应根据不同条件,在具体计算中合理地处理电场非线性效应以及电场体积力才能得到符合实际情况的结果

韓国の生活ごみ処理システムの持続可能性に関する研究 : 世界初の地下廃棄物複合処理施設（河南市）を事例として

journal articl

台湾における「脱原発」の課題とエネルギー安定供給策に関する研究

departmental bulletin pape

『East Asian Low-Carbon Community』出版記念シンポジウム記録 広域脱炭素社会の構築とグリーンリカバリー : 「東アジア低炭素共同体」構想とその具現化

articl

对称域基本解函数的构造及应用

在对称区域中,构造出满足对称边界条件的基本解函数,并推广到基本解方法(MFS)中求解Poisson方程的边界值问题.利用构造出的基本解,输入数据和所需求解的线性方程组数目可减少到原来(不利用对称性的基本解函数所需的方程组数目)的1/2或1/4,具有计算时间短、精度高、编程简单、输入数据少等优点.通过数值计算可以看出,计算结果与解析解之间的误差很小,说明该方法值得推广使用

Ecotoxicological Effects of Lead and Copper on Seed Germination of Wheat

通过种子萌发试验,研究了不同浓度的Pb2+和Cu2+对小麦种子萌发、幼苗生长以及对小麦α-淀粉酶活性的生态毒理效应。结果表明:Pb2+在低浓度下(5Mg·l-1)对小麦种子萌发过程中的各项指标皆为抑制作用;Pb2+、Cu2+胁迫对小麦α-淀粉酶活性存在低浓度激活和高浓度抑制的效应,且浓度越高,抑制作用越强;Cu2+对小麦种子萌发各项指标的抑制率大于Pb2+,Pb2+、Cu2+对小麦根生长的毒害作用大于对地上部的影响。By seed germination experiments, We studied ecotoxicological effects of Pb2+, Cu2+ on the seed germination, seedling growth and α-amylase activity of wheat.The results showed that the seed germination and seedling growth of wheat could be promoted at low concentrations of Pb2+ (under 0.5 mg·L-1), while they would be inhibited when the concentration of Pb2+ was high; Cu2+ in high concentrations (above 5 mg·L-1) could reduce the germination rate, the seedling growth and vigor markedly; the activity of α-amylase could be enhanced at low concentrations of Pb2+ or Cu2+ but be inhibited at high concentrations, and the injury became severer with the increase of concentration; the inhibition of Cu2+ on seedling growth indices of wheat were larger than that of Pb2+, the stress effects of Pb2+ or Cu2+ was stronger on seed germination than seedling growth.国家高技术研究发展计划(863计划)项目(2007AA10Z441);上海市科委项目(07DZ12055);上海市科委项目(07JC14025

官民連携による中国農村都市の生活ごみ処理システムに関する研究 : 浦江県新型PPP モデル事業を事例として

departmental bulletin pape

中国浦江県（都市農村混在型地域）の生活ゴミ処理システムの炭素排出に関する計量評価

departmental bulletin pape

中国の石炭フェーズアウトに関する研究 : 石炭消費の現状と影響要因の分析

departmental bulletin pape

Effects of Cadmium Stress on Seed Germination and Seedling Growth of Dwarf Beans

为比较系统地探讨Cd2+的生物毒性,作者以水培法研究了不同浓度的Cd2+溶液对四季豆种子萌发和幼苗生长发育过程中植物外部生长指标及内部生理生化变化的影响。结果表明:当Cd2+浓度较低时,Cd2+对种子萌发及幼苗生长发育毒害作用较小,一定浓度范围内(0.05~0.5Mg/l)还有促生作用,高浓度Cd2+(5~100Mg/l)能严重抑制四季豆幼苗根及下胚轴的生长;Cd2+胁迫对四季豆幼苗体内过氧化物酶(POd),超氧化物歧化酶(SOd),过氧化氢酶(CAT)活性存在低浓度激活和高浓度抑制的效应,且同一浓度的Cd2+对四季豆幼苗POd、CAT活性的抑制作用表现为根系大于下胚轴,Cd2+浓度>0.5Mg/l时,根系SOd活性大于下胚轴中的活性;Cd2+胁迫下,四季豆下胚轴和根的丙二醛(MdA)含量增加,且根部含量大于下胚轴的量。Cd2+对矮生四季豆种苗生长发育的影响因Cd2+浓度及幼苗部位的不同而异。In order to explore the biological toxicity of Cd2+more systematically, the effects of Cd2+ on the external and internal physiological and biochemical changes in the process of dwarf beans seed germination and seedling growth were studied with hydroponic culture experiments.The results showed that when the concentration of Cd2+ at low level, the effects of Cd2+ on the seed germination and seedling growth were not significant.Seeds germination were activated at a certain extent when Cd2+ concentration ranged from 0.05mg/L to 0.5 mg/L concentrations.The roots and Hypocotyls of seedling exhibited a significant decrease in growth at higher level of Cd2+ concentrations (5～100mg/L).The activities of peroxidase (POD), superoxide dismutase (SOD), catalase (CAT)could be enhanced at low Cd2+concentrations but inhibited at higher concentration.The activities of POD, CAT were more inhibited in roots than in Hypocotyls at the same Cd2+ concentrations, while that of SOD was higher in roots than in Hypocotyls when the concentration of Cd2+ was more than 0.5mg/L.The malondialdehyde (MDA) contents were continuously increased with Cadmium exposure in both roots and Hypocotyls.The effects of Cd2+on the dwarf beans’growth were varied with the concentration of Cd2+ and the parts of plants.“2007AA10Z441”项目的资助;“07JC14025”项目的资助;“07DZ12055”项目的资