OSCILLATION OF A FORCED SECOND ORDER NONLINEAR EQUATION

ＯＳＣＩＬＬＡＴＩＯＮ ＯＦ Ａ ＦＯＲＣＥＤ ＳＥＣＯＮＤ ＯＲＤＥＲ ＮＯＮＬＩＮＥＡＲ ＥＱＵＡＴＩＯＮ ￥ＫＯＮＧＱＩＮＧＫＡＩ；ＺＨＡＮＧＢＩＮＧＧＥＮＡｂｓｔｒａｃｔ：Ｔｈｉｓｐａｐｅｒｇｉｖｅｓｓｅｖｅｒａｌｃｒｉｔｅｒｉａｏｎｔｈｅｏ...     

家兔膀胱动脉的解剖学研究

用血管铸型和透明方法观察了家兔膀胱的血供情况。膀胱动脉主要起自脐动脉，沿膀胱侧缘行向膀胱顶，沿途发出１～４支基本对称的分支分布于膀胱前面，两侧膀胱动脉的分支在其表面有吻合现象。膀胱动脉及其分支均呈不同程度的弯曲或弹簧状，可能是适应膀胱生理性增大的结构基础。     

相转移催化剂在合成苯乙哌啶中间体中的应用

用相转移催化剂的方法合成革乙哌啶的中间体,对原生产工艺进行了改进,摸索出中间体合成的最佳条件和最高收率,使改进前后的合成收率由34.6%提高到72.4%。     

用核磁共振量子计算机研究量子退相干问题

量子退相干理象是由系统与环境的纠缠所引起的系统相干性的消失，是一种纯粹量子力学效应[1].     

A Framework to Support Agility Strategy Formulation

In the last decade, turbulent times and uncertainti es in the business environment have made ground for a new business era, and “chang e“ has become a major characteristic of the new era. This has resulted in tirele ss evolution of business systems and the creation of new manufacturing and manag ement philosophies. Agile Manufacturing (AM) is a step forward in generation of new means for better performance and success of business, and in practice is a s trategic approach to manufacturing by considering ...     

A calcium sensor in the sodium channel modulates cardiac excitability.

Sodium channels are principal molecular determinants responsible for myocardial conduction and maintenance of the cardiac rhythm. Calcium ions (Ca2+) have a fundamental role in the coupling of cardiac myocyte excitation and contraction, yet mechanisms whereby intracellular Ca2+ may directly modulate Na channel function have yet to be identified. Here we show that calmodulin (CaM), a ubiquitous Ca2+-sensing protein, binds to the carboxy-terminal 'IQ' domain of the human cardiac Na channel (hH1) in a Ca2+-dependent manner. This binding interaction significantly enhances slow inactivation-a channel-gating process linked to life-threatening idiopathic ventricular arrhythmias. Mutations targeted to the IQ domain disrupted CaM binding and eliminated Ca2+/CaM-dependent slow inactivation, whereas the gating effects of Ca2+/CaM were restored by intracellular application of a peptide modelled after the IQ domain. A naturally occurring mutation (A1924T) in the IQ domain altered hH1 function in a manner characteristic of the Brugada arrhythmia syndrome, but at the same time inhibited slow inactivation induced by Ca2+/CaM, yielding a clinically benign (arrhythmia free) phenotype.     

保偏光纤偏振器

利用保偏光纤的弯曲损耗特性绕制而成的光纤偏振器已有过报道。但文献[1]中报道的偏振器尺寸太大(φ=100mm),不利于光纤陀螺的小型化。本文介绍一种采用“熊猫”型光纤制成的偏振器,其尺寸较小(φ=30mm),消光比可达到33dB。     

强S一闭空间

本文从强半开集出发，定义了强Ｓ一闭空间，讨论了强Ｓ一闭空间的特征，它的半正则化及强Ｓ一闭空间的强半连续象。     

FOXBASE~＋与8031单片机系统的接口设计

本文提出一种ＦＯＸＢＡＳＥ＋关系型数据库管理系统与８０３１单片机系统三硬、软接口设计方法．为单片机应用系统后续数据的处理提供了有效的手段．     

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.