场和超引力的对称性

证明规范场和物质场的超对称、内对称 ,导出超引力的超对称     

一种含N和S高分子铑配合物的热稳定性研究

合成了一种新的含N和S的高分子铑配合物,通过运用红外光谱和XPS电子能谱测试手段,分析表征了配合物存在的NRh配位键和SPh配位键,发现高分子配合物中除了形成配位键的N和S外,还含有未参与配位的N和S;同时发现,这些未配位的N和S在该高分子铑配合物中能发生分子内取代反应,这一独特性质有助于提高该化合物的热稳定性.     

多复变广义解析函数的边值问题

研究多复变广义解析函数的一个边值问题 A(t1,t2 ) W+ + (t1,t2 ) + B(t1,t2 ) W+ -+ C(t1,t2 ) W-+ + D(t1,t2 ) W--(t1,t2 ) =g(t1,t2 ) ,先讨论了多复变中的 Hadamard估计和解的积分表示式 ,并且研究了几个奇异积分算子的估值和性质 ,在此基础上用压缩映射原理证明了解的存在惟一性     

质子射频场照射对~(13)C自旋晶格弛豫的影响

用扩展的Solomon方程描述1H受到射频 (RF)场照射时13 C的自旋晶格弛豫过程 .理论分析表明 ,在1H受到射频场照射时 ,13 C自旋晶格弛豫通常是一个三指数过程 ,但在特定实验条件下可以变为单指数过程 .数值模拟可显示出满足TC1TH1条件的13 C自旋晶格弛豫过程的明显差别以及不同射频场强度对13 C自旋晶格弛豫的影响 .通过实验观察固体L 缬氨酸的甲基13 C自旋晶格弛豫过程 ,测定相应的弛豫时间 .所得结果与理论分析和数值模拟完全吻合 .     

40Ar-39Ar ages of the Louzidian-Dachengzi ductile shear zone near Chifeng, Inner Mongolia and their tectonic significance

The Louzidian normal fault occurs as the eastern detachment fault of the Kalaqin metamorphic core complex. Field observations and microstructural analyses reveal that the Louzidian-Dachengzi ductile shear zone developed in its lower-plate was genetically related to sinistral strike-slips and extensional faulting. Two samples from this ductile shear zone yield ⁴⁰Ar-³⁹Ar plateau ages of 133 Ma (Bi) and 126 Ma (Kp), which are concordant with their isochron ages. The plateau age of 133 Ma (Bi) records the formation age of the ductile shear zone. The inconsistent relationship between the earlier strike-slip ductile shear zone and the later normal fault makes the Kalaqin Quasi-metamorphic core complex distinctive from Cordilleran metamorphic core complex. These ages provide important geochronological data for putting constraints on the formation age and genesis of such ductile shear zones.     

Simulation and evaluation of the quality and availability of typical GLI ocean image

ADEOS-II satellite will be launched in the near future. It collocates many remote sensing instruments in the same platform. Among them, Global Image (GLI) is considered to be a main sensor which will play a key role. In order to understand the characteristics of future GLI ocean color images, a simulation and evaluation of the quality and availability of GLI typical ocean image has been done. In the paper, we first introduce the simulation models briefly, and simulate typical cases of radiance images at visible channels, in which the radiance distribution is based on geographic location, the satellite orbital parameters and sensor properties. A method, complex signal noise ratio (CSNR) to evaluate the image quality and availability, is developed according to the characteristics of image. Meanwhile, a series of CSNR images are generated from the simulated radiance components for different cases, which can be used to evaluate the quality and availability of GLI images before the ADEOS-II is placed in orbit. Finally, the quality and availability of GLI images are quantitatively analyzed by the simulated CSNR data. The results will be beneficial to the people who are in charge of GLI mission or plan to use the data from GLI.     

Minimum inductance optimal design for the gradient coil

In MRI (Magnetic Resonance Imaging), a crucial role of gradient coils is to image organism, meanwhile the inductance of the coils determines the speed of imaging. So it is of great importance to optimize designs of the gradient coils. The target field approach is an effective method to design the gradient coils. Having applied this method and performing many numerical tests, we achieved the designs of the x-、y-、z- gradient coils , with the linearity of the fields generated by the coils in a sphere of radius 0.30 m less than 5%, in which the inductance and resistance of the coils also meet the requirements.     

氨基酸席夫碱锌配合物的合成与表征

对水溶液中酪氨酸缩水杨醛席夫碱和Zn2 现场配位进行了研究,合成了Zn2 席夫碱配合物3种,通过元素分析确定其组成分别为配合物1:Zn·L·Bipy·KAc;配合物2:Zn·L·Phen·0.5H2O;配合物3:Zn·L5·Ap·kAc·1.5H2O.通过可见紫外吸收光谱分析、红外光谱分析、热重分析对这些配合物进行了表征.     

导入野生大豆DNA小麦后代的农艺性状研究

用花粉管通道法将野生大豆总DNA导入小麦，获得了转基因小麦，其后代的农艺性状有较大的变化。田间实验分析了变异系小麦植株与对照植株在叶片的光合速率、蒸腾速率、叶面积及株高、穗粒、穗重等性状上的差异。t检验结果显示，变异系小麦在叶面性状及产量性状上的差异是显著的，外源DNA的导入改善了植物的农艺性状，并在后代中表达，为选育高产、优质的新小麦品种提供了依据。     

电场处理对牧草种子超弱发光的影响

生物系统超弱光子辐射值是生物系统内物质代谢和能量转化活动的一项指标.我们用电场处理牧草种子,测定电场对种子的超弱发光值的影响.结果表明,电场处理种子明显影响种子的超弱光子辐射强度,不同电场处理条件对种子的超弱发光值影响不同.在0.5～5.5kV/cm场强范围内,超弱发光值随场强增加呈非单调型变化.