SD10W／30汽油机油实用性配方研究

以HVIW150和HVI150为基础油,加入4．5％复合添加剂,研制出SD10W／30汽油机油,调制的油品质质量符合GB11121－1995中SD级油标准,剂量小,成本低。     

调整卫10块注采压力系统研究及应用

针对中原油田卫10块开发中暴露出的平面及层间非均质加剧、水驱状况差异大、高压欠注、能量不足等注采压力系统不合理问题,通过油藏精细描述、密井网微构造、测井资料二次解释、油藏数模等技术措施的应用。注采压力系统得到优化,开发指标变好,水驱控制和水驱动用程度得到了提高。     

Fluorescence of complexes of EuⅢwith aromatic carboxylic acid-1,10-phenanthroline

Fluorescence of complexes of EuⅢwith aromatic carboxylic acid-1,10-phenanthroline@舒万艮 @周忠诚 @牛聪伟~~     

(S)和(R)-3-甲基辛酸甲酯的合成新方法

以天然樟脑衍生物莰烷－10,2－磺内酰胺为原料,在有或无Cul催化条件下,以巴豆酰基茨烷－10,2－磺内酰胺的不对称Michael加成反应为关键步骤,进行了合成,其加成产物（3′S）和（3′R）-N-3′-甲基辛酰基莰烷－10,2－磺内酰胺经LiOH-H2O2水解及甲醇酯化反应却可合成目标产物（S）和（R）－3－甲基辛酸甲酯,全合成总产率53％,目标产物对映异构体纯度可达96％ee。     

Preparation and mechanical properties of a new Zr–Al–Ti–Cu–Ni–Be bulk metallic glass

In this paper, a new Zr₃₇Al₁₀Ti_12.5Cu_11.25Ni₉Be_20.25 bulk metallic glass is reported. The present alloy was prepared by water quenching in a silica tube of φ10×85 mm. The amorphicity of the quenched bulk samples was examined using X-ray diffraction analysis and optical microscopy. The thermal stability was evaluated by differential scanning calorimetry (DSC) at a heating rate of 10 K/min. The characteristic data of the bulk metallic glass are presented, including glass transition temperature (T_g) and crystallization temperature (T_x). Results show that the present alloy exhibits large glass forming ability. For comparison with the well-known Zr–Ti–Cu–Ni–Be metallic glass, it was found that aluminum has a little effect on the vitrification of the present alloy but influences physical properties. Specifically, Al enhances the Young's modulus by 21.4% and Vickers hardness by 20% and reduces density by 7.2%.     

NMR and IR Studies on Eight Complexes of Eu with Three Kinds of Ligands

1 ＩｎｔｒｏｄｕｃｔｉｏｎＳｏｍｅｏｒｇａｎｉｃｃｏｍｐｏｕｎｄｓｃａｎｔｒａｎｓｆｅｒｅｎｅｒｇｙａｂｓｏｒｂｅｄｉｎＵＶｒｅｇｉｏｎｔｏｒａｒｅｅａｒｔｈｉｏｎｓｗｈｉｌｅｔｈｅｙｃｏｏｒｄｉｎａｔｅｄｗｉｔｈｔｈｅｉｏｎｓａｎｄｔｈｅｎｔｈｅｒａｒｅｅａｒｔｈｉｏｎｓｅｍｉｔｃｈａｒａｃｔｅｒ ｉｓｔｉｃｆｌｕｏｒｅｓｅｎｃｅ .Ｔｈｅｌｕｍｉｎｏｕｓｉｎｔｅｎｓｉｔｙａｎｄｌｉｆｅｔｉｍｅｏｆｔｈｅｃｏｏｒｄｉｎａｔｅｄｒａｒｅｅａｒｔｈｉｏｎｓｉｓｍｕｃｈｍｏｒｅｔｈａｎｔｈｏｓｅｏｆｔ…     

20(S)-9-硝基-10-羟基喜树碱的制备研究

以 9-硝基喜树碱为原料 ,经过过氧化氢氧化成氮氧化物 ,再经光化重排反应制得 9-硝基 - 10羟基喜树碱 ,该方法合成收率略高于文献值 ,且成本价格远低于文献方法。     

T45Al10Nb附带 金全片层组织韧脆转变机制的研究

研究了应变速率和温度对Ｔｉ４５Ａｌ１０Ｎｂ合金的屈服强度和延伸率的影响。结果表明：随着应经升高,合金的屈服强度升高而延伸率下降,由此得到韧脆温度ＴＢＤＴ随应变束率升高而升工计算出Ｔｉ４５Ａｌ１０Ｎｂ合金韧脆转变的激活能为３３０ＫＪ／ｍｏｌ。这一数值与ｒ－ＴｉＡｌ合金中原子的自扩散激活能（２９０ＫＪ／ｍｏｌ）相当,说明Ｔｉ４５Ａｌ１０Ｎｂ合金韧脆转变过程受扩散控制的形迹机制,即位错攀移控制,ＴＥＭ形     

Cu-10Sn-4Ni-3Pb Alloy Prepared by Crystallization Under Pressure： An Experimental Study

The wear-resistant tin bronze (Cu-10Sn-4Ni-3Pb) with tin content above 8 wt.% prepared by traditional melting and casting process usually defects such as low density, poor properties and segregations. The crystallization under pressure processing of Cu-10Sn-4Ni-3Pb alloy was investigated. The microstructures were observed and analyzed and compared with that by traditional melting and casting process. The results show that the dendrite has obviously disappeared and the dendritic segregation alleviated by using the crystallization under 680 MPa pressure process, in comparison with the remarkably dendrite microstructure and severe as-cast defects of alloy prepared by traditional melting and casting technology. Based on the experimental study, the properties and microstructures of Cu-10Sn-4Ni-3Pb tin bronze prepared by crystallization under pressure have been improved significantly.