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海空重力测量数据处理关键技术研究
欧阳
测绘学报 , 2014,
Abstract: 博士论文
α-苦瓜素基因的克隆和原核表达
欧阳,庄东红,,李翔
植物科学学报 , 2008,
Abstract:
顾及地形与完全球面布格异常梯度项改正的区域似大地水准面精化
李姗姗,吴晓平,张传定,欧阳
测绘学报 , 2012,
Abstract: 本文推证了顾及地形与完全球面布格异常梯度改正的完全到一阶项的物理大地测量边值问题的严密解式,并在某实验区综合利用地形、重力、GPS/水准等数据进行了区域似大地水准面的计算与检验。通过对高程异常计算绝对与相对精度的比较分析,结果表明,完全球面布格异常梯度改正项对高程异常的影响能够达到厘米的量级。因此,为提高区域似大地水准面的建模精度,尤其是在地形起伏较大的区域,除需顾及地形改正项影响外,还应考虑完全球面布格异常梯度改正项对高程异常的影响。
α-苦瓜素基因的克隆和原核表达
欧阳,庄东红,,李翔
植物科学学报 , 2008,
Abstract: ?α-苦瓜素(Alpha-momorcharin)是一种多功能核糖体失活蛋白,具有抗肿瘤、抗HIV-1和抗菌活性,并同时具有免疫抑制活性。利用PCR(polymerasechainreaction)技术从苦瓜基因组中扩增出了成熟的α-苦瓜素蛋白基因,并亚克隆到表达载体pET28a(+)上,然后分别在BL21(DE3)和RosettaTM(DE3)pLysS中进行表达。结果表明只在RosettaTM(DE3)pLysS中,重组α-苦瓜素基因能成功地表达出33kD大小的重组蛋白,而且在18℃和22℃的温度下,经IPTG诱导后,能成功地表达出大量可溶性重组蛋白。利用重组蛋白的N末端带有的6×His标签,通过Ni-NTA柱纯化获得了α-苦瓜素重组蛋白。Western杂交实验表明,纯化后的重组蛋白可与鼠抗His-Tag单克隆抗体发生特异性反应。α-苦瓜素重组蛋白的获得为进一步系统研究和改造其功能与活性奠定了基础。
α-苦瓜素基因的克隆和原核表达
欧阳,庄东红,,李翔
植物学学报 , 2008,
Abstract: ?α-苦瓜素(alpha-momorcharin)是一种多功能核糖体失活蛋白,具有抗肿瘤、抗hiv-1和抗菌活性,并同时具有免疫抑制活性。利用pcr(polymerasechainreaction)技术从苦瓜基因组中扩增出了成熟的α-苦瓜素蛋白基因,并亚克隆到表达载体pet28a(+)上,然后分别在bl21(de3)和rosettatm(de3)plyss中进行表达。结果表明只在rosettatm(de3)plyss中,重组α-苦瓜素基因能成功地表达出33kd大小的重组蛋白,而且在18℃和22℃的温度下,经iptg诱导后,能成功地表达出大量可溶性重组蛋白。利用重组蛋白的n末端带有的6×his标签,通过ni-nta柱纯化获得了α-苦瓜素重组蛋白。western杂交实验表明,纯化后的重组蛋白可与鼠抗his-tag单克隆抗体发生特异性反应。α-苦瓜素重组蛋白的获得为进一步系统研究和改造其功能与活性奠定了基础。
多代卫星测高数据联合平差及重力场反演
黄谟涛 王 瑞, 翟国君 欧阳
武汉大学学报(信息科学版) , 2007,
Abstract: ?为了解决多代卫星测高数据之间的不协调问题,基于误差验后补偿理论,提出了将传统的交叉点平差整体解法简化为两步处理法,即首先使用条件平差法对交叉点观测方程进行平差计算,然后沿测高轨迹进行海面高滤波和推估。使用新方法可大大简化联合平差的计算过程,且有利于提高计算结果的稳定性和可靠性,对规则和不规则的区域网和全球网交叉点平差问题都同样适用。实际算例证明了新方法的有效性。
海域多源重力数据融合处理的解析方法
黄谟涛,欧阳,翟国君
武汉大学学报(信息科学版) , 2013,
Abstract: ?在深入分析海域多源重力数据观测技术特性的基础上,提出了基于双权因子的多源数据网格化一步融合处理方法,以及基于分步平差、拟合、推估和内插相结合的多步融合处理方法,并通过实际算例验证了两种解析融合处理方法的有效性。
IMPACT EVENTS AND ITS EFFECTS ON PALAEOENVIRONMENT: EVIDENCE FROM ODP SITE 1144 CORE A
撞击事件对古环境的影响——来自ODP1144站A孔样品的证据

刘建,张蕾,李春来,王世杰,,徐琳,欧阳自远
第四纪研究 , 2002,
Abstract: The study on microtektites of Ocean Drilling Project(ODP) site 1144 core A around Brunhes/Matuyama boundary indicated the impact event had happened in mid Pleistocene. In this paper we use shell of foraminifera G.sacculifer to determine their C and O isotope compositions. The results indicate that C and O isotope components had changed( δ13 C reduced and δ18 O ascend) in the late stage of microtektite event. The main reason of changes of C and O isotope components is because a part of target rock can be melted and boil away by huge energy when exterrestrial object shocked the Earth so the oxygen( δ18 O) and carbon( δ13 C) isotope composition of atmosphere can be transferred and in the mean time a large of clastic debris and shocking dust can be displaced into stratosphere and diffused to the seven seas. These clastic debris and shocking dust can reduce radialization of the sun and result in the temperature and photosynthesis reduced, so biologic acts weakened and amount of CO2 decreased. In relative to carbon( δ13 C) isotope composition,the oxygen( δ18 O) isotope composition is ascend.
THE MAIN ELEMENTS OF CONSTRAINT ON THE ATMOSPHERE AND HYDROSPHERE ORIGIN AND EVOLUTION OF THE TERRESTRIAL PLANETS
制约类地行星大气层和水体发育的主要因素

欧阳自远,,李春来,刘建,徐琳
第四纪研究 , 2002,
Abstract: In this paper, the authors analyze the original and evolutional characteristics of the atmosphere and hydrosphere of the Mercury, Venus, Earth (including the Moon), Mars, discuss the differences of the atmosphere and hydrosphere among the Venus, Mars and the Earth. Compared with the outer planets of the solar system, the terrestrial planets have small mass and volume, high density, slow rotation, less or no satellite, low volatile element abundances,near the Sun, lost all of their original atmosphere driven by the strong solar wind during Taurus Period,combined with the frequent and heavy impacts, the present atmosphere is secondary and come from the leaving of gases in interiors. The formation and evolution of the atmosphere and hydrosphere of the terrestrial planets were controlled by their mass (representing their energy as well as the duration and intensity of tectonic activities), the distance from the sun, and other elements. Generally, among the terrestrial planets the Earth and Venus characterized by the haviest mass, highest escape velocity, tied up much more gases which are more complicated in components and higher in density. The Mars with light mass and a velocity of no more than the half of the Earth′s, the gases on its surface gradually escaped into the deep space and the atmosphere became rare. The Mercury is the lightest planet in the terrestrial planets and nearest to the sun on which not only the solar wind but also thermal motions of molecules of gases (high temperature) is strong, and the gases easily escape into the space leaving rather rare atmosphere and have the solar wind properties. The Moon has the minimum mass with almost no atmosphere and hydrosphere. Overall, the thermal history of planets,the distance from the sun and their mass puts important effects on their atmosphere and hydrosphere formation and evolution.
一类新型大环内酯:树脂糖苷的研究进展有机化学
卢寿福,,欧阳琴琴,
有机化学 , 1997,
Abstract: 本文简单地介绍了近年来有关旋花科植物中主要活性成分-树脂糖苷的分离、结构鉴定、合成及生物活性研究的进展。
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