大豆喷施剂应用效果研究

经３年试验，研制的新型大豆喷施剂（２２％硫磷．唑），对大豆的害虫，如蚜虫、豆天蛾、食心虫、造乔在有较强的杀灭作用，防效在９７％以上；对大豆的主要病害，霜霉病和主病有较好的防治效果。同时可使大豆的植株矮化、叶绿素增加，提高大豆产量１５％以上。     

用CO2激光合成甲胺的实验研究

以10.6μ波长的低功率连续CO_2激光在低常压(～200)常温(80℃)和无催化剂的条件下,热引发甲醇和氨的系统,选择性地合成了一甲胺,再一次证实了激光热化学合成的特点。     

模糊仿紧性

本文引入一种新的Fuzzy仿紧性,具有下述优点:(1)它是点集拓扑学仿紧性的“好的推广”(good extension),(2)其定义适用于一般Fuzzy子集,(3)对于闭子集是遗传的,(4)几种较合理的Fuzzy紧性均为其特例。     

铁的新显色反应的研究

本文研究了在非离子表面活性剂OP存在下Fe~(2+)与2-(6′-溴苯并噻唑-2′-偶氮)-5-羧基苯酚的显色反应,在乙酸钠溶液中,配合物的最大吸收波长为603.8nm,在0—14.5μgFe~(2+)/25ml范围内服从比耳定律,其表观摩尔吸光系数为6.30×10~4L.mol~(-1).cm~(-1)。     

异长叶烯甲基甲酸酯香料合成研究

以江西马尾松重质松节油为主要原料,经精馏、异构化和Prins反应合成了异长叶烯甲基甲酸酯香料。得率达到47.66％。并对反应机理和产物结构进行了探讨。     

Deep sea pollen record during 12－1.6 Ma from the southern South China Sea and its response to envi-ronmental change

Based on deep-sea pollen results (512-76 m) from ODP Site 1143 in the southern South China Sea (SCS),the climate and vegetation evolution sequence on the surrounding islands and the exposed continental shelf are discussed. The pollen records show that the pollen influx was quite low before 8.15 Ma and increased dramatically afterwards. The influx changes can be ascribed,on one side,to tectonics deformations around the southern SCS resulting in rapid uplift of islands and subsequent increase of the sediment rates and pollen influx and on the other side to climate cooling and monsoon enhancement. Around 2.63 Ma was another obvious boundary,the increasing of pollen and spores influx since this time was mainly related to global climate cooling. Spectrum analysis of pollen influx values shows that 2 Ma,0.67 Ma,and 0.19-0.17 Ma cycles existed during 12-3.0 Ma,while 0.1 Ma and 46.9 ka cycles existed during 3.0-2.0 Ma.     

易切削结构钢中非金属夹杂物与切削性能的相关性

本文以钙硫系易切削结构钢为主要研究对象,借助于定量图像分析仪、电子探针、扫描电镜等仪器和设备,探讨了钢中非金属夹杂物与钢切削性能的相关性。研究钢中非金属夹杂物尺寸对刀具寿命的影响,结果表明:本试验条件下夹杂物对刀具寿命的临界影响尺寸为8μm。还研究了非金属夹杂物的间距、均匀性及数量对刀具寿命的影响。 最后,建立了描述非金属夹杂物特征参数与刀具寿命关系的数学模型。 试验表明,刀具寿命(T)主要受钢中非金属夹杂物有效颗粒数(Ne)和分布均匀度(H)的影响。     

水电工程超概算原因分析及对策建议

根据水电工程建设特点,系统分析了水电工程超概算的原因,提出了减小超概算的对策建议,并以四川省田湾河某水电站设计概算与调整概算的实例,进行对比分析,结果表明:准确及时地了解市场价格信息、加大工程前期投入以及严格的建设管理过程,可以在一定程度上减小超出概算的幅度.     

Conformational analysis on anti-HIV-1 peptide T22([Tyr5,12,Lys7]-polyphemusinⅡ )

The conformational scan of anti-HIV peptide T22 ([Tyrsup>5,12, Lys⁷]-polyphemusinⅡ) backbone on a deformed potential energy surface (PES) was performed using the potential smoothing searching (PSS) protocol. All located minima were then transferred to the original PES using undeformed optimized potentials for liquid simulations (OPLS) potential function, and minimized by multi-conformer minimization (MCM). For solution-phase calculations, the GB/SA continuum model for water was used. This application of PSS integrated with MCM is proved a feasible method for solving the multiple-minimum problem in the conformational analysis of flexible molecules with cyclic structure.     

四辊中板轧机钢板波浪生成与抑制之六--辊系偏移距的确定

首次考虑摩擦弯矩和附加弯矩对辊系稳定性的影响，建立了四辊轧机辊系最佳偏移距模型。