期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
第24届国际化学奥林匹克竞赛简讯
1
作者 范景玮 《化学教育》 CAS 北大核心 1992年第5期63-63,共1页
在美国华盛顿科学院礼堂内举行的第24届国际化学奥林匹克竞赛的闭幕式以及颁奖仪式上,三位诺贝尔奖获得者,为本届竞赛的获奖者授予了奖牌和证书,当中国队员上台领取三块金牌和一块银牌时,在欢快地乐曲声中全体起立响起了热烈的掌声,各... 在美国华盛顿科学院礼堂内举行的第24届国际化学奥林匹克竞赛的闭幕式以及颁奖仪式上,三位诺贝尔奖获得者,为本届竞赛的获奖者授予了奖牌和证书,当中国队员上台领取三块金牌和一块银牌时,在欢快地乐曲声中全体起立响起了热烈的掌声,各国的领队、队员纷纷向他们表示祝贺,祝贺中国队取得了优异的成绩。我国领队程铁明教授,段连运副教授,观察员范景玮高级工程师和四名中学生,一行七人。 展开更多
关键词 奥林匹克竞赛 乐曲声 段连运 日至 混合编队 团体总分 理论考试 民族文化素质 新闻工作者 教育工作者
下载PDF
五学会赴台参加中学科教交流活动简讯
2
作者 范景玮 《化学教育》 CAS 1997年第7期48-47,共2页
关键词 交流活动 海峡两岸 台湾 科教工作者 现状与展望 科学教育 重点中学 国际化学奥林匹克 师范大学 中国化学会
下载PDF
STUDIES ON DEPENDENCE OF MEMBRANE FLUIDITY OF NORMAL CELL V_(79) AND CANCER CELL V_(79)-B_1 OF CHINESE HAMSTER LUNG WITH FATTY ACID SPIN LABELS ON TEMPERATURE
3
作者 赵保路 席丹 +3 位作者 张建中 范景玮 张清刚 忻文娟 《Chinese Science Bulletin》 SCIE EI CAS 1983年第5期680-686,共7页
We have studied the membrane fluidities of normal cell V79 and cancer cell V79-B1 of Chinese hamster lung with 4 types of fatty acid label, showing that near the polar surface of the membrane, the fluidity of the canc... We have studied the membrane fluidities of normal cell V79 and cancer cell V79-B1 of Chinese hamster lung with 4 types of fatty acid label, showing that near the polar surface of the membrane, the fluidity of the cancer cell membrane is higher than 展开更多
关键词 CELL ACID LABEL SPIN FLUIDITY polar showing spectrometer rotational ARRHENIUS
原文传递
ESR SPECTRA STUDIES OF THE SPIN PROBE TEMPO INCORPORATED INTO LIPOSOMES AND BIOMEMBRANES
4
作者 张清刚 忻文娟 +2 位作者 张建中 范景玮 李益新 《Chinese Science Bulletin》 SCIE EI CAS 1982年第5期538-542,共5页
Lipids are the principal component of the cell membranes. In the light of the hypothesis of the fluid mosaic model of the structure of cell membranes proposed by Singer and Nicolson, membrane lipid bilayers have a str... Lipids are the principal component of the cell membranes. In the light of the hypothesis of the fluid mosaic model of the structure of cell membranes proposed by Singer and Nicolson, membrane lipid bilayers have a strictly ordered structure with a certain fluidity at normal temperature. X-ray diffraction, ESR and 展开更多
关键词 TEMPO SPIN FLUIDITY LABEL ordered HYPOTHESIS MOSAIC lipid partition transformed
原文传递
AN INVESTIGATION OF THE SPECTRA OF CELL MEMBRANES AND LIVING CELLS LABELED WITH MALEIMIDE NITROXIDE FREE RADICALS
5
作者 忻文娟 张清刚 +2 位作者 张建中 李益新 范景玮 《Chinese Science Bulletin》 SCIE EI CAS 1982年第4期438-444,共7页
In recent years, the application of the ESR technique in biophysics has been significantly expanded owing to the introduction of the spin labeling method.The spin labeling method is to incorporate into or bind to biol... In recent years, the application of the ESR technique in biophysics has been significantly expanded owing to the introduction of the spin labeling method.The spin labeling method is to incorporate into or bind to biological macromolecules a paramagnetie substance whose physical and chemical characteristics have already been well known to us, such as a stable organic nitroxide free radical. By analyzing the changes of related ESR parameters, we can survey the spatial conformation 展开更多
关键词 CELL LABELING INCORPORATE labeled expanded CONFORMATION environments latter transformed BOTTLE
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部