铝与络黑T显色反应的研究和应用

研究了络黑T(EBT)与铝发生显色反应的适宜条件。在0.15mol·L-1NaOAc溶液中,发生配位反应生成紫色的二元配合物,配位比为Al∶EBT=1∶3。最大吸收波长为536nm,ε值为1.9×104L·mol-1·cm-1,线性范围为0～30μg/50ml。方法可用于一些胃药中铝的测定,测定结果与络天青S法十分吻合。     

对一道习题的探讨

对一道分析化学应试习题的解法提出了异议,并提出了自己的解法.     

Fishbone Instability Excited by Barely Trapped Electrons

Fishbone instability excited by barely trapped suprathermal electrons （BTSEs） in tokamaks is investigated theoretically. The frequency of the mode is found to close to procession frequency of BTSEs. The growth rate of the mode is much smaller than that of the ideal magnetohytrodynamic （MHD） internal kink mode that is in contrast to the case of trapped ion driven fishbone instability. The analyses also show that spatial density gradient reversal is necessary for the instability. The correlation of the results with experiments is discussed.     

广义多值拟变分包含解的两步迭代

本文引入并研究了Hilbert空间中的一类广义多值拟变分包含问题.借助预解算子技巧构造了一个新的两步迭代算法来逼近广义多值拟变分包含的解,并且证明了其解的存在性以及迭代算法生成的迭代序列的收敛性.     

浅论英语听力障碍和排除措施

英语听力的费时低效一直是困扰英语学习者的一大难题。要解决这一难题，必须从语言和非语言障碍两个方面分析影响英语听力理解的障碍因素，采取相应措施排除障碍，提高英语听力理解水平。     

长脉冲托卡马克反应堆堆心物理

本文对采用先进运行模式，具有大自举电流比值的纯感应驱动托卡马克反应堆堆心等离子体特性进行了分析。     

ELECTRON CYCLOTRON CURRENT START-UP FOR OHMIC DISCHARGE ON CT-6B TOKAMAK

Electron cyclotron current start-up as a scheme to initiate ohmic discharges has been investigated with two circuits of open and shorted primary windings of transformer. The experimental results indicate that we can achieve the saving of equivalent flux and the reduction of starting voltage in the initial phase for the two circuits in fundamental frequency resonance region.     

离心泵的计算机优化选型

利用计算机技术，模拟离心泵性能曲线，绘制其管路特性曲线，准确、合理地确定出工况点，从而解决了离心泵在生产上的难题。     

K-SHELL IONIZATION OF IRON BY ELECTRON BOMBARDMENT

K-shell ionization cross sections for Fe by electron impact were measured by detecting the characteristic X-rays emitted from the thin solid film target of known mass thickness with a Si(Li) detector. Reflection correction of the substrate was done using a bipartition model of electron transport. The experimental results are satisfactory as compared with the theoretical calculation and empirical formula.     

客体诱导LiCI／FER沸石客／主体材料主体相变行为的研究

用热扩散法将客体LiCI组装进入主体FER沸石孔道生成的客／主体材料中，客体与主体骨架在一定温度下发生相互作用，诱导该沸石发生相转变．XRD，FT-IR，TG／DTA／DTG等方法表征该客／主体材料相变过程证明，相变起始温度500℃，500～600℃生成LiAISi3O8，800℃的相变产物主要为β-石英，LiAIsi3O8的相对含量随LiCI的组装量增多而增加．