金属羰基化合物氧原子转移反应动力学和机理研究的信息与进展(二)

续上饶《上饶师专学报》１９９８年第６期）２．５信息之五氧转移试剂（ＲＡ－Ｏ）的Ａ－Ｏ键能及其取代基的性质是影响其反应活性的重要因素。２．５．１取代基的推电子性能增大胺类Ｎ－氧化物反应活性氧转移反应研究中最为吸引人的问题之一，是试图了解转移试剂的什么性...     

铝合金电暖器的研制

根据铝合金的导热系数大，异型加工性能好的特点，研制出自然对流换热性强，并具有高效传热结构的电暖器     

电路中能量的传递

通过对一个日常容易误解问题的分析，最后经过计算，得出电能是由电磁场来传递的结论，揭示了电能传输的本质．     

实现对角优势的动态补偿器的设计

本文介绍了利用准对角优势化方法设计任意阶动态预补偿器的算法，并根据此算法给出一个实际例子     

蓄能结构传热过程的分析

含有相变材料的蓄能建筑结构对热量的传递具有较大延迟性和减衰性，应用这种特点可以降低空调系统的容量，如果与适当的被动供冷系统相结合，它可以部分或全部替代人工制冷系统，实现节约能源、保护环境的目的。     

Excitation energy transfer mechanisms in allophycocyanin (I)

The mechanisms of excitation energy transfer within allophycocyanin monomer with the theory of generalized master equation (GME) and the technique of time-resobed fluorescence anisotropic spectroscopy are studied. In the case of known information of its structure and spectra, the theory applied is based on the assumption that the coupling interaction between two chromophores is fairly weak. The theory correctly predicts the experimentlly observed rate for excitation energy transfer in allophycocyanin monomer. Based on the results, the energy transfer mechanism can be described as Förster and these processes cannot take place from the high vibrational levels of donor to acceptor.     

Mechanical and biochemical characterization of the contraction elicited by a calcium-independent myosin light chain kinase in chemically skinned smooth muscle

Summary The contraction induced by a Ca²⁺-independent myosin light chain kinase (MLCK-) was characterized in terms of isometric force (F_o), immediate elastic recoil (SE), unloaded shortening velocity (V_us), shortening under a constant load and ATPase activity of chemically skinned smooth muscle preparations. These parameters were compared to those measured in a Ca²⁺-induced contraction to assess the nature of cross bridge interaction in the MLCK-induced contraction. F_o developed in chicken gizzard fibers as well as SE were similar in contractions elicited by either agent. V_us in the contraction induced by MLCK-(0.36 mg/ml) was similar though averaged 39.3±8.9% less than V_us induced by Ca²⁺ (1.6x10^–6M) in the control fibers. Addition of Ca²⁺ (1.6x10^–6M) to a contraction induced by MLCK-resulted in small increases in both F_o and V_us. Shortening under a constant load was similar for both types of contractions. The contraction induced by MLCK-was accompanied by an increased rate of ATP hydrolysis. The MLCK-induced contraction is thus kinetically similar though not identical to a contraction induced by Ca²⁺. We conclude that with respect to actin-myosin interaction, MLCK- and Ca²⁺-induced contractions are similar.     

多虫灵浓悬浮剂热贮稳定性及悬浮率测定研究

用高效液相色谱法紫外检测器测定了多虫灵浓悬浮剂的热贮稳定性和悬浮率．外标法测得多虫灵浓悬浮剂（ＦＭＣ公司生产）样品质量浓度为４．８８％，热贮稳定性合格，平均分解率为１．４２％，悬浮率大于９９％．     

垂直射流沿恒温热平面的热量传输和速度分布

研究了二维冷液体射流垂直冲击一个恒温热平面时，射流沿平面的热量传输和速度分布．通过对Ｃｒｏｃｃｏ变换加以推广，求得了问题的相似解，揭示了速度梯度，温度分布和剪切力之间的关系．     

钢管定长控制系统与计算机图形仿真

介绍了一种利用计算机图形仿真的实验方法来调试 PL C控制系统 ,使得整个控制系统的调试过程直观、方便、经济实用