再入飞行器总体参数优化设计

研究再入飞行器总体参数的优化设计方法。方法在内部装填物参数给定的情况下,应用步长加速法与外点罚函数相结合的优化设计方法,以再入飞行器的最小质量为目标函数,求得最优设计方案。     

Discovery and character of the Kunlun-Yellow River Movement

Based on geomorphological, tectonic and sedimentary data, a Kunlun Yellow River Tectonic Movement has been recognized in 1 10-0 60 Ma B.P. This tectonic movement, which leads to uplift of the Qinghai_Xizang (Tibet) Plateau from 1 500 to 3 000-3 500 m, is periodic, abrupt and changeable in the movement rate of uplifting and slide slipping.     

Discovery of eclogite at northern margin of Qaidam Basin, NW China

Eclogite was first discovered at the northern margin of the Qaidam Basin in this study. It occurs as pods in the gneiss sequence of Middle to Upper Proterozoic age and is mainly composed of garnet, omphacite, phengite and rutile. The garnets contain 44%-62% of almandine, 15%-33% of grossular and 12%-30% of pyrope molecules, and the omphacites contain 40%-46% of jadeite. Applying garnet_clinopyroxene thermometry and jadeite geobarometry, the peak conditions of eclogite facies metamorphism occurred at about (722±123)℃ and at the pressure of up to c. 22 ×10 8 Pa.     

Effects of extracellular calmodulin on pollen germination and tube growth

The effects of calmoddin (CaM) antagonist W7-agarose, anti-CaM serum and exogenous purified CaM on pollen germination and tube growth ofForsythia suspensu were studied. The pollen germination and tube growth were inhibited or completely stopped by CaM antagonist W7-agarose. The addition of exogenous purified CaM stimulated pollen germination and tube growth, whereas the same amount of bovine serum albumin (BSA) had no effect. The inhibitory effects caused by W7-agarose and anti-CaM serum could be reversed completely by the addition of exogenous purified CaM. The tube growth of germinated pollen was also inhibited or completely stopped by W7-agarose. The results suggest that endogenous extracellular CaM initiates pollen germination and tube growth, whereas exogenous CaM enhances the above processes.     

Relationship between giant magnetoresistance of NiFe/Cu multilayers and their microstructures

The (111)-orientated NiFe/Cu multilayers were prepared by magnetron sputtering method. At room temperature, saturation magnetoresistances of NiFe/CU multilayers oscillate as a function of Cu spacer layer thickness. Two peak GMR values of 19.4%, 11.6% and 11.2%, 1% appear, respectively, at Cu sublayer thickness of t_Cu,= 1.0, 2.2 nm while the deposition pressures are 0.25 and 0.45 Pa. X-ray small-angle reflections and diffuse scattering at Cu K-edge (8.979 keV) by synchrotron radiation source were used to characterize the interfacial roughness. Diffraction anomalous fine-structure scattering (DAFS) was performed to investigate the local structure of NiFe and Cu sublayers. Results show that the deposition pressure has effect on interfacial roughness of the samples obviously, and the interfacial roughness also affects the GMR values of the samples strongly.     

平面型无参比电极二氧化硫传感器

制备了一种新型无参比电极由ＮＡＳＩＣＯＮ和ＹＳＺ两种固体电解质及Ｎａ２ＳＯ４辅助电极构成的二氧化硫传感器。实验结果表明,该传感器对二氧化硫产生Ｎｅｒｎｓｔ响应。由于这种传感器采用了平面结构,对比电极和工作电极处于同样气氛中,消除了氧的影响和密封问题,同时有利于传感器的微型化和多元复合。     

新疆植物物种多样性的特点分析

新疆土地面积占全国１／６,约１６４．６８万ｋｍ２,位于欧亚大陆腹地,景观与地形复杂,气候变化明显,植物种质资源特殊。新疆高等植物４０８１种（包括２２９亚种、变种与变型）,隶属于１６１科８７７属,新疆植物多样性的特点如下：１）单种科、单种属及寡种属丰富,分别为８０科、３７４属及３１５属。２）短命及类短命植物丰富,已知的有２３２种,隶属于２７科１１４属,主要分布于准噶尔盆地边缘。３）新疆特有种稀少,但中国、塔什库尔干、天山、阿尔泰山、昆仑山及帕米尔高原的特有种特别丰富。４）近５０年以来,发表的新疆新分类群较多,有３６０余种。５）中国仅分布于新疆的植物有１７７３种,其中１００种以上的科有４科（豆科,伞形科,菊科,禾本科）,总数为６２２种;８０种以上的科也有４科,总数为３３１种。最后,对新疆极端环境下的植物种质资源及栽培植物的野生近缘种的保护问题提出了几点建议。     

Endothelial Cell Culture on Different Phospholipid Surfaces *

ＩｎｔｒｏｄｕｃｔｉｏｎＢｉｏｍａｔｅｒｉａｌｓａｒｅａｌｗａｙｓｕｓｅｄｉｎａｎｅｎｖｉｒｏｎｍｅｎｔａｄｊａｃｅｎｔｔｏｌｉｖｉｎｇｔｉｓｓｕｅｓａｎｄｂｌｏｏｄ．Ｃｅｌｕｌａｒｉｎｔｅｒａｃｔｉｏｎｓｗｉｔｈｉｍｐｌａｎｔｓａｒｅｏｆｐｒｉｍａ...     

Hopf模代数结构

引进Ｈｏｐｆ模代数的概念,研究了Ｈｏｐｆ模代数的结构,证明了Ｈｏｐｆ模代数等价于Ｓｍａｓｈ积,从而给出了Ｓｍａｓｈ积的一种新的刻划。     

三唑Schiff碱及其配合物的生物活性初探

初步考察了6种三唑Schiff碱及12种过渡金属配合物的杀菌、除草活性．结果表明,某些供试药对芹菜斑枯、黄瓜灰霉、油菜菌核等菌病的抑制作用较弱．对稗草、马唐草、油菜、苋菜的除草活性为：苗期茎叶处理的除草活性较苗前土壤处理的要高,尤以对苋菜生长抑制活性较高,鲜重抑制率可达50％～60％．