神经激素对蝗虫配子发生的影响

激素对昆虫的配子发生有很大作用,就昆虫激素、包括保幼激素、蜕皮激素以及昆虫脑肽等 对昆虫特别是蝗虫配子影响作了介绍.     

GeⅩⅪ-SeⅩⅩⅢ离子n=3,Δn=0跃迁谱线和振子强度的计算

用HFR方法对CaⅨ-KrⅩⅩⅤ离子3s2,3s3p,3s3d,3p2组态能级结构进行了理论计算.在已有实验研究的基础上,通过分析离子能级沿等电子序列的变化规律,运用最小二乘拟合方法预言计算了GeⅩⅪ-SeⅩⅩⅢ离子3s2,3s3p,3s3d,3p2组态14条精细结构能级值.在此基础上,进一步计算了GeⅩⅪ-SeⅩⅩⅢ离子3s2-3s3p,3s3p-3s3d和3s3p-3p2跃迁的23条谱线波长和相应的振子强度.计算结果与已有的实验值十分吻合,波长的最大不确定度为0.008 nm.     

从两部电影的得失看后现代时期的跨文化冲突

通过两部华语电影在西方社会的成败，从跨文化交际学的角度进行解读分析，作者指出，在后现代时期的文化融合时期，应该充分考虑跨文化的因素，并提出了有效交际的培养途径。     

青少年皮艇运动员技术教学法的研究

本根据皮艇运动和青少年运动员自身特点，讨论青少年皮艇运动员训练初期的教学过程，参考有关资料，结合教学实践，探讨皮艇训练初期的技术教学法，以为该项目的技术训练提供参考。     

基于反相对称法的双边带通信系统

给出了一种基于反相对称法的双边带通信系统的实现方法,通过MATLAB仿真,证实了这种方法的可行性。     

吴江市D级地籍GPS控制网的数据处理与分析

介绍了吴江市D级GPS控制网改造过程中的数据处理，尤其是新旧控制网的衔接过程，探讨了选用起算点的方法，并对苏州独立坐标的使用提出了建议。该控制网的数据处理过程对其他城市做GPS控制网改造时有一定的参考价值。     

金汤桥开启系统的复原与改进

介绍了天津金汤桥活动跨开启系统的原貌、原状以及原缺陷，阐述了复原手动和电动开启系统的原则，并介绍了平转式开启桥的原理及构成．通过反复探索与研究，成功地复原了金汤桥活动跨手动和电动开启系统．提出了平转式活动跨机械传动系统的回转中心、活动跨的回转中心，以及桥墩中心的设计基准与安装基准必须服从三者同一性原理，并解决了这一平转式开启桥的难题．实践证明，复原后的活动跨开启系统安全、可靠、平稳、灵活．     

PINNING EFFECT OF LEAD LANTHANUM TITANATE THIN FILMS DEPOSITED ON DIFFERENT SUBSTRATES

Pinning effect of lead lanthanum titanate (PLT) ferroelectric thin films with excess PbO of 20 mol% has been studied for deposition on diffe rent substrates. Silicon, sapphire and quartz were used as substrates on which P t/Ti or LaNiO₃ thin films were deposited as bottom electrodes. Electron probe analysis results showed that there was still a certain amount of excess Pb in PLT films after annealing at 550 ℃ for 1 h, and the amount of it was dependent on the substrate used. The distribution of excess Pb in the films was investig ated by Auger electron spectroscopy depth profile. It was shown that the substrates and the bottom electrodes had significant effects on the content and distrib ution of excess Pb in PLT films. The excess Pb and its accumulation at the inter face between the film and bottom electrode may act as pinning centers and have a pinning effect on domains, which can be observed by abnormal P-E hysteresis loops and abnormal C-V curves. The excess Pb content in the films and the accumulation of Pb at the interface were high in PLT films deposited on Pt/Ti/S i, and considerable pinning effect was observed. As LaNiO₃ would absorb most part of the excess Pb in PLT films, the content of excess Pb in the films deposited on LaNiO₃/Si was very low and the pinning effect was hardly observed.     

纳米复合固体超强酸SO_4~(2-)/ZrO_2-Fe_2O_3的制备及其催化合成硝基苯的研究

采用纳米化学技术制备了新型的纳米复合固体超强酸催化剂SO42-/ZrO2-Fe2O3,并用XRD、TEM进行了表征.结果表明:所研制的SO42-/ZrO2-Fe2O3催化剂为晶态纳米粒子,平均粒径为30 nm,分散性较好;当活化温度为580℃,反应温度为75℃,n(硝酸)/n(苯)=2,m(苯)/m(催化剂)=20,催化反应时间5 h时,硝基苯收率可达89.6%.     

PEO-LiClO_4-ZSM5 composite polymer electrolyte (IV): Polarized optical microscopy study

All solid-state lithium polymer batteries may be one of the best choices for the future electrochemical power source, characterized by high energy densities, good cyclability, reliability and safety[1,2]. Owing to its potential capability to replace the t…