目的分析微重力条件下和正常重力条件下神经细胞培养的上清液中蛋白质表达的差异。方法用旋转细胞培养系统提供的微重力环境进行神经细胞微重力培养。应用表面增强激光解吸离子化（SELDI）蛋白质芯片技术检测微重力和正常重力条件下神...目的分析微重力条件下和正常重力条件下神经细胞培养的上清液中蛋白质表达的差异。方法用旋转细胞培养系统提供的微重力环境进行神经细胞微重力培养。应用表面增强激光解吸离子化（SELDI）蛋白质芯片技术检测微重力和正常重力条件下神经细胞培养上清液的蛋白质谱。用PBSII—C型蛋白质芯片阅读机读取数据，采用Ciphergen Protein Chip3．2．1软件分析数据。结果WCX2两种蛋白芯片共捕获246个蛋白峰，发现14个差异蛋白。与正常重力培养组蛋白谱相比，11个蛋白在微重力培养后高表达，3个蛋白在微重力培养后低表达。结论微重力条件下和正常重力条件下神经细胞培养的上清液中存在差异蛋白表达，这些差异蛋白为进一步了解失重对神经细胞的影响提供了重要线索。展开更多
In order to cool computer chip efficiently with the least noise, a single phase water-cooling radiator for computer chip driven by piezoelectric pump with two parallel-connection chambers is developed. The structure a...In order to cool computer chip efficiently with the least noise, a single phase water-cooling radiator for computer chip driven by piezoelectric pump with two parallel-connection chambers is developed. The structure and work principle of this radiator is described. Material, processing method and design principles of whole radiator are also explained. Finite element analysis （FEA） software, ANSYS, is used to simulate the heat distribution in the radiator. Testing equipments for water-cooling radiator are also listed. By experimental tests, influences of flowrate inside the cooling system and fan on chip cooling are explicated. This water-cooling radiator is proved more efficient than current air-cooling radiator with comparison experiments. During cooling the heater which simulates the working of computer chip with different power, the water-cooling radiator needs shorter time to reach lower steady temperatures than current air-cooling radiator.展开更多
文摘目的分析微重力条件下和正常重力条件下神经细胞培养的上清液中蛋白质表达的差异。方法用旋转细胞培养系统提供的微重力环境进行神经细胞微重力培养。应用表面增强激光解吸离子化（SELDI）蛋白质芯片技术检测微重力和正常重力条件下神经细胞培养上清液的蛋白质谱。用PBSII—C型蛋白质芯片阅读机读取数据，采用Ciphergen Protein Chip3．2．1软件分析数据。结果WCX2两种蛋白芯片共捕获246个蛋白峰，发现14个差异蛋白。与正常重力培养组蛋白谱相比，11个蛋白在微重力培养后高表达，3个蛋白在微重力培养后低表达。结论微重力条件下和正常重力条件下神经细胞培养的上清液中存在差异蛋白表达，这些差异蛋白为进一步了解失重对神经细胞的影响提供了重要线索。
基金This project is supported by National Hi-tech Research and Development Program of China (863 Program, No. 2002AA404250)National Natural Science Foundation of China (No. 50575093).
文摘In order to cool computer chip efficiently with the least noise, a single phase water-cooling radiator for computer chip driven by piezoelectric pump with two parallel-connection chambers is developed. The structure and work principle of this radiator is described. Material, processing method and design principles of whole radiator are also explained. Finite element analysis （FEA） software, ANSYS, is used to simulate the heat distribution in the radiator. Testing equipments for water-cooling radiator are also listed. By experimental tests, influences of flowrate inside the cooling system and fan on chip cooling are explicated. This water-cooling radiator is proved more efficient than current air-cooling radiator with comparison experiments. During cooling the heater which simulates the working of computer chip with different power, the water-cooling radiator needs shorter time to reach lower steady temperatures than current air-cooling radiator.
