酶促反应过程中Brigg─Haldane稳态假说的适用性

本文利用非平衡态动力学方法探讨了Ｂｒｉｇｇ—Ｈａｌｄａｎｅ稳态假说对酶促反应的适用性．结果表明，在反应过程中间并不存在着一个时间区域使稳态条件成立，并采用分支理论得到了反应运力学方程的近似解。     

矿石可选性预测专家系统(Ⅰ)─—系统的总体设计

建立了铅锌矿石可造性预测专家系统，运行结果良好。本篇着重论述矿石可造性领域知识的特点和知识表示方法；分析矿石可造性预测专家系统的主要特征；讨论矿石可造性预测子问题的划分、一般决策过程、推理控制策略以及系统的总体设计。     

塑料光学元件的清洗、镀膜和胶合

各种塑料光学元件在光学系统中的应用越来越广泛。作为光学元件,必然涉及清洗、镀膜和胶合等工艺技术问题。本文就塑料光学元件的这三个技术作一介绍。     

半群方法在发汗控制问题中的应用

本文研究执防护发汗冷却控制中的自由边界解的存在性、唯一性，应用算子半群方法得出了解的存在性、唯一性，所用的方法对一般非线性、抛转型偏微分方程和高维情形也适用．     

Global optimization design of quasi-optics fower combiner of solid-state millimeter wave resonator

This paper describes a global optimization design of quasi-optics power combiner of solid-state millimeterwave resonator. It is operated in the frequency range from 50 to 300 GHz using GaAs Gunn diodes. It is shown that sourcearrays containing N² (N=3,5,...2K+1, where k is positive integer) individual elements. It is very efficient power transfer of energy from the source-array to the fractional power of the fundamental beam mode etc.. The RF output power exceeded the sum of the individual diodes to be threefold to sevenfold. And this data is the global optimization solution.     

Mössbauer study of fired Lishan clay and terra-cotta warriors and horses of Qin dynasty (221 B.C.)

The sherds of terra-cotta warriors and horses and Lishan clay were characterized by Mossbauer spectroscopy, XRD, XRF, NAA, thermal and chemical analyses. Lishan clay was testified as the original material of terracotta warriors and horses, the kilning of these warriors and horses was first carried out in an oxidizing atmosphere, and then changed to a predominantly reducing atmosphere. With refiring experiments, the temperatures of Q3 and Q4 samples were determined to be 830±50 and 980±50°C respectively. Transformations of Lishan clay were determined by firing in oxidizing and reducing atmospheres. The Mossbauer parameters of Lishan clay, which was taken after 2–24h firing, were changing up to 12h.     

All-fibre optical system for exciting and detecting the vibration of silicon microresonator sensors

An all-fibre optical system for optical interrogation and detection of the vibrations of a silicon microresonator is reported. Metal-coated silicon microresonators are excited by intensity modulated laser light delivered through an optical fibre, while the vibration of the resonators is detected by an optical fibre interferometer. Measurements have shown that an average optical power of 10 μW is sufficient to maintain the flexural vibration of the resonator. When the resonator is used as a pressure sensor, its resonant frequency changes from 62 kHz to 130 kHz as the pressure varies from -0°6 bar to 1 bar (gauge). A silicon resonator with 700 nm aluminium coating functions as a temperature sensor, showing a frequency shift from 262 kHz to 251 kHz when the temperature changes from 25 °C to 80 °C.     

复线电气化区段施工感应电对人体的危害及防护对策

感应电会对人体造成伤害。从电磁感应和静电感应原理入手，分析了产生感应电的过程，并就如何防止感应电的危害提出了防护对策，有一定实用价值。     

大学生英语写作常见错误分析

目前我国大学生的英语写作能力及写作水平普遍偏低，尚缺乏一定的书面交际能力，为此，重视英语写作课教学，加强对学生语言基础知识的训练，帮助他们分析并克服英语写作中的常见语言错误，是迅速提高他们的英语表达能力及交际能力，适应对外交际需求的当务之急。