The top 10 science news items of 1995 in China,selected by some 400 of CAS Members,who are among the China’s top scientists,were announced at a press conference on January 18, 1996,in Beijing.This annual event was co...The top 10 science news items of 1995 in China,selected by some 400 of CAS Members,who are among the China’s top scientists,were announced at a press conference on January 18, 1996,in Beijing.This annual event was co-sponsored by the major Chinese News media. 1. Five scientists win an appeal in a libel suit On February 22,1995,five scientists won an appeal at Beijing Intermediate People’s Court in a two-year-long libel suit filed by a farmer inventor,Mr.Qiu Mandun。展开更多
Highlight in NdFeB Research: NdFeB is the best available magnetic material and the increase of its energy product has been a key issue for high-tech application where the main market of the magnet is located. Prof. Ho...Highlight in NdFeB Research: NdFeB is the best available magnetic material and the increase of its energy product has been a key issue for high-tech application where the main market of the magnet is located. Prof. Hongzu Xie of Baotou Research Institute of Rare Earth has recently completed his research project on the preparation of high energy product NdFeB magnet and constructed a production line with the capacity of 10 metric tons of NdFeB magnet per annum in the institute. His process strictly controls the content of oxygen which is a key knowhow for raising the energy product of the magnet. Therefore, the so produced magnet has the oxygen content in the range of 800-1000 ppm. In addition, he employs a one way mold-pressing technique of which the pressure is vertical to the magnetic field and manufactures the NdFeB blocks展开更多
Terfenol-D is the best available magnetostriction material at present. Its magnetostrictive strain can reach as high as 2000 ppm, yet many practical conditions must be reasonably controlled to obtain this figure. Dr. ...Terfenol-D is the best available magnetostriction material at present. Its magnetostrictive strain can reach as high as 2000 ppm, yet many practical conditions must be reasonably controlled to obtain this figure. Dr. Guo He et al. of Beijing University of Science and Technology investigated the effect of solidification velocity on the crystal orientation of Tb-Dy-Fe samples. They have developed a qualitative criterion for stable crystal growth in展开更多
Dr. Yimin Chao of Jiangsu Institute of Petrochemistry, Jiangsu collaborated with Dr. Jianguo Zhao of Massachusetts Institute of Technology, USA on a joint research project "Study on the Photoluminescence of T1GaS...Dr. Yimin Chao of Jiangsu Institute of Petrochemistry, Jiangsu collaborated with Dr. Jianguo Zhao of Massachusetts Institute of Technology, USA on a joint research project "Study on the Photoluminescence of T1GaS<sub>2</sub> and TiGaS<sub>2</sub>. Er<sup>3+</sup> Single Crystal". They grew the title single crystals by the Bridgman technique. They found that the photoluminescence mechanism of the crystals is closely re-展开更多
读罢此文,也许会感叹;光与健康的关系是何等密切！平日情绪的波动居然与光有涉。冬去春来,wonderful feeling comes with spring.你有此感受吗?光照不足.竟会导致一种可怕的疾病—Seasonal Affective Disorder.你熟悉melatonin这个词吗...读罢此文,也许会感叹;光与健康的关系是何等密切！平日情绪的波动居然与光有涉。冬去春来,wonderful feeling comes with spring.你有此感受吗?光照不足.竟会导致一种可怕的疾病—Seasonal Affective Disorder.你熟悉melatonin这个词吗?本文屡屡提及。本刊于96年第 11期曾刊注释读物;What We Know about Melatonin.本文进一步说明了其助眠催眠功能。文章还谈及紫外线(ultraviolet light)的功与过。其功为;When ultraviolet light hits a per-son’s skin,it starts a chemical reaction which produces vitamin D.The vita-min,in turn,makes it possible for the body to use calcium、最让人吃惊的是本文披露的治白血病的方法之一:removes their blood through a tube and shinesthe(ultraviolet)light on the tube.The treated blood is then returned to thebody.文末提及:现有两种家用照明灯,不知你家中用哪种?展开更多
文摘The top 10 science news items of 1995 in China,selected by some 400 of CAS Members,who are among the China’s top scientists,were announced at a press conference on January 18, 1996,in Beijing.This annual event was co-sponsored by the major Chinese News media. 1. Five scientists win an appeal in a libel suit On February 22,1995,five scientists won an appeal at Beijing Intermediate People’s Court in a two-year-long libel suit filed by a farmer inventor,Mr.Qiu Mandun。
文摘Highlight in NdFeB Research: NdFeB is the best available magnetic material and the increase of its energy product has been a key issue for high-tech application where the main market of the magnet is located. Prof. Hongzu Xie of Baotou Research Institute of Rare Earth has recently completed his research project on the preparation of high energy product NdFeB magnet and constructed a production line with the capacity of 10 metric tons of NdFeB magnet per annum in the institute. His process strictly controls the content of oxygen which is a key knowhow for raising the energy product of the magnet. Therefore, the so produced magnet has the oxygen content in the range of 800-1000 ppm. In addition, he employs a one way mold-pressing technique of which the pressure is vertical to the magnetic field and manufactures the NdFeB blocks
文摘Terfenol-D is the best available magnetostriction material at present. Its magnetostrictive strain can reach as high as 2000 ppm, yet many practical conditions must be reasonably controlled to obtain this figure. Dr. Guo He et al. of Beijing University of Science and Technology investigated the effect of solidification velocity on the crystal orientation of Tb-Dy-Fe samples. They have developed a qualitative criterion for stable crystal growth in
文摘Dr. Yimin Chao of Jiangsu Institute of Petrochemistry, Jiangsu collaborated with Dr. Jianguo Zhao of Massachusetts Institute of Technology, USA on a joint research project "Study on the Photoluminescence of T1GaS<sub>2</sub> and TiGaS<sub>2</sub>. Er<sup>3+</sup> Single Crystal". They grew the title single crystals by the Bridgman technique. They found that the photoluminescence mechanism of the crystals is closely re-
文摘读罢此文,也许会感叹;光与健康的关系是何等密切！平日情绪的波动居然与光有涉。冬去春来,wonderful feeling comes with spring.你有此感受吗?光照不足.竟会导致一种可怕的疾病—Seasonal Affective Disorder.你熟悉melatonin这个词吗?本文屡屡提及。本刊于96年第 11期曾刊注释读物;What We Know about Melatonin.本文进一步说明了其助眠催眠功能。文章还谈及紫外线(ultraviolet light)的功与过。其功为;When ultraviolet light hits a per-son’s skin,it starts a chemical reaction which produces vitamin D.The vita-min,in turn,makes it possible for the body to use calcium、最让人吃惊的是本文披露的治白血病的方法之一:removes their blood through a tube and shinesthe(ultraviolet)light on the tube.The treated blood is then returned to thebody.文末提及:现有两种家用照明灯,不知你家中用哪种?
