运用Medlab生物信号采集处理系统对蛙神经肌肉机能测定的实验分析

目的 用经典法、后毁髓离体法及部分离体法制备蛙神经肌肉标本 ,观察其机能变化 ,并对其进行分析比较。方法 对蛙坐骨神经刺激引起腓肠肌收缩 ,由张力换能器采集信号 ,并用Medlab生物信号采集处理系统对其进行数据分析处理。结果 后毁髓离体法及部分离体法标本组腓肠肌性能与经典法标本组相比 ,收缩幅度增大(P <0 .0 0 1) ,潜伏期和舒张期缩短 (P <0 .0 1)。结论 后毁髓离体法及部分离体法标本明显优于经典法标本。

体育教学中巧用心血管机能测定法

中等职业学校的学生年龄跨度大，不同年龄的学生的机体条件不同，身体素质也不尽相同，如果按照统一的要求进行体育锻炼，则难以达到既定的目的。本文主要通过科学运动医学知识对体育锻炼进行必要的监控，以达到科学健身的目的。

脏器微血管通透性的测定方法

大鼠颈动脉注射１％荧光素钠（ＦｌＮａ），按不同时间点取心、脑、肝、肾等九个脏器，利用荧光分光光度计测定各脏器组织匀浆液的荧光强度，得到不同脏器中ＦｌＮａ的分布及ＦｌＮａ在不同脏器中随时间的衰减变化趋势，并辅以冰冻切片进行观察。实验发现，不同脏器中ＦｌＮａ的分布极不均匀，以脑为最低，肝、肾为最高，冰冻切片也显示了同样的分布差别。

崂山气功术在运动员中初步应用——在四川省业余体校游泳教练学习班的讲座

现在,已进入二十世际八十年代了。在训练运动员的过程中,我们需要采用科学手段,重视客观因素,注意训练方法,这样,才有可能把一个普通的青少年,培养成为优秀的运动员。为此,在运动训练的全过程,当具有三条件:第一、教练员的作用。这就是,从选材到训练,从培养到提高的过程中的主导作用。第二、医务监督。即,通过医务监督,向教练员及时提供科学生理生化指标,提供生理机能测定的数据,以使教练员科学地了解运动员的生理机能状况和体能状态。第三、饮食营养。运动员需要吃什么?吃多少?怎样吃?

运动心理学选材方法

一、运动员12项专项心理测试指标与方法 (一)、简单反应时的测定目的:测定运动员视、听简单反应的时间。仪器:C—T3神经机能测定仪(四川701厂生产,成都体育学院研制) FS—1反应时时间知觉测试仪(武汉体院研制)

Determination of physical properties for the mixtures of [BMIM]Cl with different organic solvents

Physical properties including refractive index, density, viscosity and conductivity for binary mixtures of l-butyl- 3-methyl imidazolium chloride （[BMIM]CI） and different organic solvents at 298.15 K have been investigated. Ex- cess molar volumes have been calculated and obtained data has been fitted by the Redlich-Kister equation. The density and refractive index were found to increase with increasing concentration of [BMIM]CI, however, excep- tions do exist as in the case of dimethyl sulfoxide （DMSO）/[BMIM]CI. For DMSO/[BMIM]CI, the density decreases with increasing concentration. The addition of different organic solvents was able to disrupt the interactions within mixtures, leading to free mobility of ions. The free mobility of ions has been found to enhance conductivity and decrease viscosity to varying extents in all mixtures studied. It has been observed that solubility parameters, dielectric constants and composition of the solvents used play a vital role in determining the resultant properties. The data obtained will play an important role in understanding the effect of the addition of organic solvents in ILs to enhance their applicability.

A NOVEL OVER-VOLTAGE PROTECTION METHOD FOR 600V SPIC

A novel over-voltage protection method for 600V SPIC (Smart Power IC) is proposed in this paper. The combining FFLRs (Floating Field Limiting Rings) system is designed to be a voltage detector. The detector's voltage can turn off the switch of the APFC (Active Power Factor Correction) circuit and the bus voltage would fall from 600VDC to 300VDC, so the SPIC and power devices can be protected. The advantages of this design are that the total protection circuits are integrated in SPIC and technologically compatible with CMOS or BCD(BipolarCMOS-DMOS) technology.

青年男篮大运动量训练负荷临界幅度的初步探讨

一、选题依据运用控制论进行篮球训练的重要依据之一,就是要经常不断地获取运动员训练的各种反馈信息。通过对这些信息的分析和研究控制训练,使训练达到预期效果。运动训练负荷是一种重要的指标。我国一些篮球教练员和科研人员在探讨篮球运动训练负荷方面做了很多工作,取得了很大成绩。但对青年男篮运动员大运动量训练负荷临界幅度方面进行研究、尚处于开始阶段。我们从国外也尚未看到这方面的科研与实践成果。

Quantitative measurement of the mechanical properties of human antibodies with sub-lO-nm resolution in a liquid environment

The nanomechanical properties of single human immunoglobulin G and M antibodies were measured in a liquid environment using a fast force-volume technique with sub-10-nm spatial resolution. The ultrastructural details of these molecules were resolved in the images. Simultaneously, important physical properties, including elasticity, adhesion, and deformation were measured. The dimensions and adsorption of the immunoglobulin M antibodies onto the substrate indicated that they are highly by a low elastic stiffness （34 ± 10 MPa） flexible. The antibodies were characterized and high deformability （1.5 ± 0.5 nm）.

Time-varying Performance Prediction and System Identification of Internal Combustion Engines

Design for life-time performance and proper maintenance measures are usually needed to prolong the mean-time-between-failures of complex equipments such as internal combustion engines.To reach this,it is important to obtain the information of time-varying system performance in design stage and to identify the structural change at each moment.So a multidisciplinary model based method is studied in this paper to unify the time-varying performance(TVP) prediction and system identification(SI) of equipments.The related multidisciplinary model in this paper should be not only precise to give simulation results but also sensitive to the variation of system parameters.So the varying history of system performance along with the structural change can be obtained from the model.Then the value of system parameters can be identified by seeking roots with given detected responding data and relationship between system responding data and system parameters.A case study on a low power gasoline engine shows that the method presented in this paper can provide useful information for the development and maintenance of complex equipments.