全国专业计量技术委员会委员最新调整

为加强全国专业计量技术委员会的工作,近期。国家质检总局批准全国法制计量管理计量技术委员会、全国法制计量管理计量技术委员会能效标识计量检测分技术委员会、全国几何量工程参量计量技术委员会、全国流量、     

计量技术法规建设的理论探讨

计量技术法规是贯彻实施计量法律法规的重要技术支持，它与《计量法》、计量行政法规、计量规章以及其他有关计量的管理性、规范性文件共同构成了我国的计量法律法规和计量技术法规体系群。中国的计量技术法规在国家法制计量工作的实践过程中不断发展、逐步完善和持续改进。全面系统地论述中国计量技术法规，探讨中国计量技术法规在现阶段新形势下的建设，具有十分重要的意义。     

计量技术机构现场计量风险管理体系建立的探究

本文介绍了计量技术机构现场计量风险在计量技术机构管理中的意义、风险分类、计量技术机构现场计量风险管理体系的建立和风险管理运行的要点,说明了计量技术机构在现场计量中应该提高风险意识、建立符合自身计量技术机构的风险管理体系以及运行风险管理体系来降低由于风险事故的发生带来的经济损失。     

从专利角度分析计量技术机构创新发展能力

本文所指的计量技术机构是指计量技术领域的企事业单位,包括研究院所、专业高校和企业.采用知识产权分析方法对计量技术机构在计量检测领域拥有的专利现状进行研究,系统分析计量技术机构涉及的主要技术领域、技术发展趋势、专利技术区域分布情况以及专利引文分析,从而为了解计量技术机构的计量科技创新能力及技术发展态势提供新的参考依据.     

西南片区计量所长年会在贵阳召开

由贵州省计量测试技术研究所承办的西南片区计量所长年会于１９９９年１０月６日至９日在贵阳市召开。国家质量技术监督局、中国测试技术研究院、云南省计量测试所、成都市计量监督检定测试所、武汉市计量测试检定所、昆明市计量所、重庆市计量技术研究所、广西计量测试所、南宁市技术监督局、南宁市计量测试所、自贡市计量测试所、贵阳市技术监督局、贵阳市计量测试所、贵州省质量技术监督局、贵州省计量测试技术研究所的领导、贵州省计量测试技术研究所开发部、实验工厂的代表共３４人出席了会议,共商计量事业的发展、腾飞,共叙计量工作…     

江苏省计量技术委员会首次会议在南京召开

本刊讯3月29日．江苏省计量技术委员会首次会议在南京召开。会议宣读了省局《关于成立江苏省计量技术委员会的通知》，宣贯了《江苏省计量技术委员会章程》，讨论了申报江苏省专业计量技术委员会情况。省计量技术委员会是全省计量工作的重要技术平台．将承担重大计量项目技术论汪、计量技术规范组织制定、计量标准比对组织实施三项职责，拟设力学等l1个专业计量委员会。     

“计量与测试技术”杂志第三届联办会议在珠海召开

由珠海市计量测试所承办的《计量与测试技术》杂志第三届联办领导小组和编委会会议于1995年10月17日至19日在珠海市召开.成都市计量监督检定测试所、成都市技术监督局、贵阳市计量测试研究所、重庆市计量技术研究所、南京市计量测试所、珠海市计量测试所、贵州省计量测试技术研究所、福州市计量所、哈尔滨市计量检定测试所的领导小组成员和编委及“计量与测试技术杂志社”的代表共15人出席了会议.     

智慧计量与经济社会发展

正本文所称智慧计量,是指利用数字化、网络化、自动化、智能化等现代信息技术与现代计量技术深度融合形成的现代计量服务模式。智慧计量是对传统计量模式的重构与创新,是"互联网+"在计量领域的重要实践,通过现代信息技术和先进计量技术的深度融合,实现计量管理科学、计量技术智能、计量手段数字、计量信息融通,     

天然气能量计量技术现状及展望

“十三五”以来，中国已在天然气能量计量溯源技术、测量技术等方面得到了显著提升，为实施能量计量提供技术保障。为此，分析了天然气流量量值技术、发热量测试技术、能量测量技术和能量计量关键设备国产化技术现状，介绍了国内在能量计量运行管理方面已成功实施的典型案例。结果表明：国内天然气能量计量溯源体系及测量技术基本满足实施天然气能量计量的要求；能量计量配套仪器仪表已基本实现国产化，但与国际先进水平尚存在差距。结论认为，持续提升天然气能量计量溯源技术水平，继续加大国产化智能计量仪器仪表研发力度，积累管网能量计量管理运行经验，展望能量计量技术发展方向。     

实验室动态

全国压力计量技术委员会2010年年会召开近日,全国压力计量技术委员会2010年年会在广西南宁市召开。会议审定并通过了5项国家计量技术法规。参加审定会的有全国压力计量技术委员会委员、全国压力计量技术委员会委员气象压力计量分技术委员会委员     

Estimation of Parameters of Universal Distribution of Moments of Failure of Products

A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling.     

Evaluation of optical properties of highly scattering media by moments of distributions of times of flight of photons

A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue.     

Estimation of potentialities of methods of summation of direct measurement errors

Conventional methods for summation of direct measurement errors are considered. Conditions under which these methods provide consistent results are stated. It is proposed to utilize for characteristic of the total error, its interval estimator or the half-sum of the value obtained by adding up its arithmetic and geometric random errors.Translated from Izmeritel'naya Tekhnika, No. 4, pp. 10–12, April, 1995.     

Determination of parameters of microstructural inhomogeneity of deformation of metals by the method of modeling

The article suggests a method of evaluating the microstructural inhomogeneity of deformation of metals by modeling. The method includes the measurement of deformations of metal according to meshes of a dividing grid with small base and the calculation of the distribution parameters of microdeformations in model representation. It is shown that the modeling method makes it possible objectively to evaluate the microinhomogeneity of deformation of metals independently of the chosen mesh size of the dividing grid. New structural characteristics are introduced: the base and wave of variation expressing the degree of crumbling or amalgamation of metal grains by inhomogeneity of deformation.Translated from Problemy Prochnosti, No. 7, pp. 40–44, July, 1991.     

空压机轴承箱蜗壳温度探头油封改造

由于空压机进气侧轴承箱蜗壳温度探头密封效果不好,使空压机及其后续管道受到油污染。后将温度探头的O形圈密封改为骨架油封,杜绝了轴承箱漏油问题。文章简介空压机的结构和技术参数,详细介绍了骨架油封的制作和优点。     

Characteristics of mechanical properties of materials in studies of conditions of attainment of marginal states

It is shown that conditions of attainment of marginal states in the material of structural components are formulated on the basis of analysis of force and deformation criteria of formation and development of destruction. The parameters of these criteria are data on types of structural materials, standard and special characteristics of their mechanical properties, structural forms of considered elements of the equipment, and their operating stress loading. In this case, the construction of a system of state equations for describing interrelation of current damage, external actions, and responses to them is based on the concept of calculating variations in properties of materials at all stages of the design life cycle.     

Assessment of intakes of mixtures of radionuclides

Australia has several uranium mines and a large number of mineral sand mines, with associated processing facilities. Exposures resulting from these mining and processing operations usually involve intakes of mixtures of radionuclides. This work describes the development of a suite of first order, linear compartment models, based on the ICRP Publication 66 respiratory tract model, and an analytical solution to the decay equations, for assessing the consequences of such intakes. The computer programs based on these models directly compute excretion, organ retention and organ and whole-body doses for intakes of either single radionuclides or any mixture of radionuclides belonging to the same radioactive decay chain. The intake can be via inhalation, ingestion or injection, and can be acute, chronic or of limited duration. The starting concentration and degree of secular (dis)equilibrium can be specified for each radionuclide. No assumptions need to be made about the relative magnitudes of the radioactive half-lives of the different nuclides.     

Analysis of anisotropy of properties on the basis of studies of texture of coarse-grained ingots of thermoelectric materials

An analysis of anisotropy of the properties of a Bi₂Se_0.3Te_2.7 solid solution was carried out using construction of demonstrative surfaces for thermoelectric effectiveness and thermal expansion coefficients. It is shown that the texture is an important factor forming anisotropy of properties and technological fitness of ingots for manufacturing modules. Anisotropy of properties based on the studies of the ingot textures obtained using the float-zone method and Bridgman method (growing thermoelectric plates in a flat cavity) was studied.