发电厂电气部分课程的工学一体化教学改革探索与实践

详细论述了近年来我们对《发电厂电气部分》课程所做的一系列教学改革与探索,提出了工学一体化教学改革模式,该模式旨在将工程实际贯穿于整个教学活动中,将工程思想、理论学习和工程训练相互融通,使其成为一个动态的整体,采用该模式教学,能够强化学生动手能力和培养创新思维,建立工程思想.     

Quantum Privacy Amplification for a Sequence of Single Qubits

We present a scheme for quantum privacy amplification (QPA) for a sequence of single qubits. The QPA procedure uses a unitary operation with two controlled-not gates and a Hadamard gate. Every two qubits are performed with the unitary gate operation, and a measurement is made on one photon and the other one is retained.The retained qubit carries the state information of the discarded one. In this way, the information leakage is reduced.The procedure can be performed repeatedly so that the information leakage is reduced to any arbitrarily low level. With this QPA scheme, the quantum secure direct communication with single qubits can be implemented with arbitrarily high security. We also exploit this scheme to do privacy amplification on the single qubits in quantum information sharing for long-distance communication with quantum repeaters.     

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。