刺激家兔耳廓交感神经对低电阻点产生的影响

目前,对于内脏疾患引起耳廓低电阻点增多的反应机制,多考虑交感神经的传出途径和肾上腺素的体液因素,笔者曾在急性实验中观察到,刺激家兔心脏可引起支配头面部和耳廓的交感神经—颈外动脉神经的电活动增强。同时,耳廓电阻值在短暂的升高后持续降低。当刺激颈外动脉神经时也观察到耳廓血管的收缩。这自然想到。

隔药灸为主治疗白癜风147例临床观察

我室自1988年3月以来,采用隔药灸和内服中药治疗白癜风147例,现报告如下。一般资料本组病例选择:均在门诊接受治疗达2个疗程以上者。147例中,男性82例,女性65例;

如何选购摄像机

镜头。它是摄像机的“眼睛”，是摄像机的重要组成部分之一。镜头的参数指标很多，但选购时必须了解两项参数指标：一是镜头口径大小。它与摄像机进光的多少有着密切的关系，口径越大，进光越多，能够保证图像质量。二是光学变焦倍数的大小。数码摄像机的变焦分为光学变焦和数码变焦。光学变焦是利用镜片的移动改变物体和焦点之间的距离，不会对图像的质量产生很大影响；数码变焦则是通过电子电路将图像放大，可是在图像放大的同时，图像的清晰度也会下降．

异地电视台视频素材传输格式转换探索

由于各电视台所使用的非编系统软、硬件的不同，编解码程序、非编所支持的格式的差异，有可能导致视频文件在接收后不能使用的情况出现。修水电视台和九江电视台网络就出现过对接传输视频素材时，由于文件格式不对，致使视频文件出现丢帧不可用的情况，后通过双方的探讨、合作，问题得到了解决。

县级电视台视频资料存储媒介鉴析

目前,县级电视台存储视频资料的主要媒介有磁带、光盘、硬盘、存储卡,它们之间各有特点,在视频资料保存中也发挥着重要的作用。笔者认为各电视台可以根据自身的条件进行选择或结合使用,下面就各存储媒介的特点作简要介绍。

THE EFFECT OF SYMPATHETIC NERVE AND ADRENAL ON THE VISCERA-AURICULO-ACUPOINT RESPONSE

The article summarizes the achievements of research on the mechanism of auriculo-acu-points by us in recent years.(1) By stimulating and recording the electric activities of the sympathetic nerve, it has been observed that the abnormal sympathetic excitation is the cause for the reduction of the electric resistance itt ear acupoints, the occurrence of the low-resistance spots in the auricle, and the auricular resistance has a phasic process of rising ahead and falling behind, we have observed that the quantity change of the low-resistance spots in the auricle is parallel to the quantity of the syrnpathetlc fibres, with local injection of the specific sympathetic-destroying agent, 6-OHDA.(2) It was confirmed with animal cross-circulation method that humour factors participate in the viscera-auriculo-acupoint response. Furthermore, the adrenal effect was proved with the adrenal extirpation. A several models of Yang-deficiency syndrome were rnade to analyze the action of some substaflces secreted from adrenal cortex and adrenal medulla.(3) On the basis of the above-mentioned outcome, a hypothesis that specific and nonspecif1c viscera-auriculo-acupoint responses are mixed has been rendered, The specific response here means the special relationship between certain parts of the auricle and certain viscera which forms the foundation of auriculo-acupoints, while the nonspecific one refers to the general or diffused response in the whole auricle resulting from the actions of all the viscera and other parts of the body. The specific response may be fulfilled by the sympathetic nerve, wh1le the nonspecific response is accomplished by both of sympathetic nerve and adrenal gland. The significance of the research may be concluded in the following: the mechanism of auricle diagnosis in clinic has been further understood; the diagnostic accurracy and the therapeutical effect could be raised and a new breakthrough for expounding the substance of meridians and collaterals could be made.

范伯子教育思想对现代语文教学的意义

范伯子的教育思想主要体现在语文教学上,可概括为教育目的、教学内容、教学方法等方面,不仅在当时极为先进,而且对现代教学极具意义,可为其提供极为有益的启迪。