粒化碱性高炉矿渣中原始矿物相的形成研究

研究了粒化碱性高炉矿渣中晶出原始矿物相的类型与矿渣化学成分之间的关系.结果表明：不同化学成分的矿渣当加热温度高于700℃以上时,莫硅镁钙石首先结晶析离,并随温度的升高转化为黄长石.黄长石的结构参数,按其化学成分是在钙铝黄长石和镁黄长石之间变化,黄长石作为原始矿物相在碱性矿渣中比较罕见.     

电化学催化的Heck反应研究

本文主要研究了电化学催化的Heck反应。研究发现,在1-乙基-3-甲基咪唑四氟硼酸盐（IEMIMIBF4）离子液体中,I=0.1 A恒电流电解,还原得到的活性零价Pd对Heck反应具有很好的催化活性,得到的C-C键的形成产物,产率为64%。     

Students’ reaction to classroom discipline in Australia,Israel, and China

This study investigates the extent to which students from Australia, Israel, and China report that their teachers’ classroom disciplinary behaviour affects their attitudes towards schoolwork and the teacher. They also report how justifiable a teacher's intervention appeared. In all three settings, both punishment and aggression relate significantly to the level of students’ distraction and negative affect towards the teacher. Teachers’ recognition of responsible behaviour and discussion with students relate to less distraction and greater belief that the intervention was necessary. Hinting and the involvement of students in classroom discipline decision making relate to a stronger belief that the disciplinary actions taken are warranted. Implications are discussed.     

d-樟脑-10-磺酸的合成工艺研究

在乙酐介质中,通过天然樟脑与硫酸的磺化反应合成了d-樟脑-10-碘酸,并对影响收率的因素进行了研究。结果表明,当n(樟脑)n∶(乙酐)n∶(硫酸)=1.03∶.01∶.3时,在10℃下反应24h,d-樟脑-10-磺酸的收率为82.4%。     

有序无序转变对金属间化合物环境氢脆敏感性的影响

The mechanism involving the effect of disorder/order transformation on the environmental embrittlement in gaseous H2 is summarized. It is shown that there is no hydrogen embrittlement in disordered state of Kurnakov type intermetallics in gaseous H2. However, the H2-induced environmental embrittlement for the ordered alloy having identical chemical composition becomes severer as the degree of the order increases. The results of testing on the ion gage turned on and off during tensile testing show that the more sensitive to H2-induced hydrogen embrittlement for ordered alloy than disordered one is attributed to the fact that atomic ordering may accelerate the kinetics of the catalytic reaction to produce more atomic hydrogen. The results on simultaneous hydrogen charging show that disordered alloys embrittled as hydrogen atoms are forced into the material implying that the embrittlement of ordered alloy in gaseous H2 is also due to the acceleration of the kinetics of catalytic reaction. The above suggestion was further verified by the adsorption tests of Ni3Fe intermetallics powder. It is shown that the amount of chemically adsorbed hydrogen in ordered state is significantly larger than that adsorbed by the disordered alloy, indicating that the more sensitive to H2-induced embrittlement in the ordered state of alloy is essentially due to the accelerated catalytic reaction.     

论散手运动员反应能力的心理训练

反应能力是一项重要的心理指标,它影响着散手运动员的技、战术的正确运用与发挥。散手运动员的反应主要属复杂的视觉——运动反应。反应心理训练主要是提高运动员的感知、思维、判断和预测能力以及运动协调能力。     

利用家兔建立操作式条件反射的可行性研究

本实验是在条件反射箱内训练家兔建立操作式条件反射。训练时给予1s的声音刺激后,要求动物使用前股拨动杠杆,然后结合食物强化,每天训练40次。结果表明：家兔一般在1～2个训练日即可学会操作动作;首次出现阳性反应需3～7个训练日;大约7～10个训练日便可使家兔建立起巩固的操作式条件反射。（并存在有较大的个体差异）。实验证明：利用家克建立较复杂的操作式条件反射是确实可行的。     

An appreciation of free radical chemistry 6. Experiments involving free radicals

In the previous five parts, we have seen how the ubiquitous free radicals touch our lives in many ways. In this part, four experiments involving free radical intermediates are described. They are very simple, economical and practical, and can be easily carried out in laboratories with meagre resources. They can, therefore, be adapted for MSc chemistry practicals as part of free radical chemistry course.     

TiSiW12O40/TiO2催化合成己二酸二乙酯

首次以固载杂多酸盐TiSiW12O40／TiO2为多相催化剂。通过己二酸和乙醇反应合成了己二酸二乙酯，并探讨了诸因素对产率的影响。正交实验结果表明：TiSiW12O40/TiO2具有良好的催化活性，醇酸物质的量比为4．0：1，催化剂用量为反应物料总量的1．5％，反应时间1．5h。反应温度66--118℃，酯收率可达79％。     

聚氨酯弹性体的合成研究

以己二酸（AA）,1,4-丁二醇（BDO）,乙二醇（EG）分别采用一步法、二步法合成分子量为3000的聚酯PAEB-R和聚酯PAEB-A。再分别与二苯基甲烷二异氰酸酯（MDI）、扩链剂1,4-丁二醇（BDO）,乙二醇（EG）反应合成固含量30%与粘度为20000的聚氨酯PU-PAEB-R和聚氨酯PU-PAEB-A。FTIR、1H-NMR表明聚氨酯合成存在二次反应,有支链结构-NHCONCOOR-、-NHCONCONH-生成;且PAEB-A与MDI反应程度较高,游离的异氰酸酯基较少。