共查询到19条相似文献,搜索用时 140 毫秒
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天然气能量计量以天然气单位发热量和体积量(或质量)相乘得到的能量值作为计量单位,是科学、公平、合理的计量方式。开展天然气分析系统现场性能评价,掌握仪器的运行状况,是实施能量计量的前提。为提高计量场站设备评价效率及数字化管理水平,根据GB/T 28766—2018《天然气分析系统性能评价》规定的气相色谱仪性能评价的方法,同时参考JJF 1059.2—2012及ISO 10723:2012,编制天然气性能评价软件,并投入实际应用,结果显示,两个计量场站的体积计量不确定度超出国家标准要求,一台气相色谱仪的现行函数检测组成计算高位体积发热量与真实值的偏差较大。通过现场应用发现,使用评价软件可以节省评价时间,提高评价结果的准确性,保证评价数据的完整性,为能量计量的实施提供数据保障。 相似文献
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介绍基于平台化的计量器具管理系统的设计与实现方法。以计量器具管理为研究对象,分析了目前平台化计量器具管理系统特点和功能,并借鉴国内外研究现状和发展趋势,提出了平台化计量器具管理系统开发的必要性和优势,讨论了平台化计量器具管理系统研究目标和内容,对平台化计量器具管理系统研究方案及关键技术解决途径进行了分析。平台化计量管理系统依据计量标准开发研制,由计量和标准化方面的专家提出功能设置。该系统简化了管理层次,可提高计量管理的科技水平和市场竞争能力,满足计量管理人员的需求。 相似文献
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介绍计算机技术在水质检测实验室信息管理系统中的应用,基于信息管理系统的总体设计思路,探讨计算机数据库技术和网络技术在排水监测站实验室信息管理系统中的应用。水质检测实验室信息管理系统是集分析检测、质量控制及实验室综合管理于一体的模块化、开放式信息平台,主要应用于水质检测流程控制、质量监测和实验室管理。对计算机技术在水质检测实验室信息管理系统建设中的应用进行分析,为水质检测实验室信息管理系统的建设应用提供解决方案。通过实验室信息管理系统建设,可以规范实验室的管理,调动实验室各种资源,提高工作效率,加大对污废水排放的监管力度。 相似文献
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《化学分析计量》2014,(6):4-5
<正>国防科技工业应用化学一级计量站(原国防科工委化学计量一级站)是1986年建于中国兵器工业第五三研究所的专业计量技术机构,同时也是兵器非金属材料理化检测中心、国家进出口商品非金属材料认可实验室、国防计量2501校准实验室、全国化工标准物质委员会标准物质研究开发中心。目前,专门从事化学计量的人员196人,其中研究员15人、高级工程师32人。拥有各种分析测试仪器150余台,建有国防计量最高标准30余项。主要承担国防科工委化学计量科研任务;国防系统化学量值传递,计量标准的考核、复查、人员培训;国防大型试验基地现场计量保证;标准物质的研制、定值、发放;进出口非金属材料检验;化学产品测试及未知样品的剖析等。先后完成计量科研课题40余项,有20余项达到国 相似文献
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《化学分析计量》2015,(2):4-5
<正>国防科技工业应用化学一级计量站(原国防科工委化学计量一级站)是1986年建于中国兵器工业第五三研究所的专业计量技术机构,同时也是兵器非金属材料理化检测中心、国家进出口商品非金属材料认可实验室、国防计量2501校准实验室、全国化工标准物质委员会标准物质研究开发中心。目前,专门从事化学计量的人员196人。其中研究员人、高级工程师32人。拥有各种分析测试仪器150余台,建有国防计量最高标准30余项。主要承担国防科工委化学计量乖研任务;国防系统化学量值传递,计量标准的考核、复查、人员培训;国防大型试验基地现场计量保证;标准物质的研制、定值、发放;进出口非金属材料检验:化学产品测试及未知样品的剖析等。先后完成计量科研课题40余项,有20余项达到巨 相似文献
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指出了可燃气体检测报警器计量检定的重要性,结合河南省南阳市辖区内可燃气体检测报警器计量检定的现状,着重分析了计量检定与计量管理存在的问题和难点,并且提出了相关建议。 相似文献
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Clinical laboratory tests provide critical information at every stage of the medical decision‐making process, and measurement of the activity levels of enzymes such as alkaline phosphatase, lactate dehydrogenase, etc. provide information regarding various body functions such as the liver and gastrointestinal tract. The uncertainty associated with these enzyme measurement processes describes the quality of the measurement process, and therefore methods to improve the quality of the measurement process require minimizing the measurement uncertainty of the enzyme assay. In this study, we develop a mathematical model of the lactate dehydrogenase measurement process, with uncertainty introduced into its parameters that represent the sources of variation in the different components and stages of the measurement process. The Monte Carlo method is then utilized to estimate the uncertainty associated with the model, and therefore the measurement process. An empirical function used to generate estimates of uncertainty for patient samples with unknown activity levels is constructed using the model. The model is then used to quantify the contributions of the individual sources of uncertainty to the net measurement uncertainty and also quantify the effect of uncertainty within the calibration process on the distribution of the measurement result. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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As a laboratory certified to ISO 9001:2000 and accredited to ISO 17025, rtech laboratories has incorporated an overall system for technical and quality management, which results in benefits observed in daily laboratory practices. Technical requirements were updated to include the addition of formal personnel training plans and detailed records, method development and validation procedures, measurement of method uncertainty, and a defined equipment calibration and maintenance program. In addition, a stronger definition of the sample preparation process was documented to maintain consistency in sampling, and a more rigorous quality control monitoring program was implemented for chemistry and microbiology. Management quality improvements focused on document control to maintain consistent analytical processes, improved monitoring of supplier performance, a contract review process for documenting customer requirements, and a system for handling customer comments and complaints, with continuous improvement through corrective and preventive action procedures and audits. Quarterly management review of corrective actions, nonconforming testing, and proficiency testing aid in determining long-term trending. The practical benefits of these technical and management quality improvements are seen on a daily basis in the laboratory. Faster identification and resolution of issues regarding methods, personnel or equipment, improved customer satisfaction, meeting quality requirements of specialized customers, and overall increased laboratory business are all the result of implementing an effective quality system. 相似文献
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Terry Antony Gough 《Accreditation and quality assurance》1997,2(5):216-223
The contribution to the debate on the quality of forensic science in the UK by various bodies including government, professional
and accreditation organisations, is discussed. The practical steps that have been taken over many years to improve quality
and to ensure that there are well-documented systems in place are considered. These include laboratory quality systems, proficiency
testing and the training of forensic scientists.
Received: 6 November 1996 Accepted: 12 December 1996 相似文献
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实验室比对盲样测定是检验实验室能力验证、实验室资质认定、机构考核的主要手段。为研究并解决测试实验室比对土壤盲样中铍、钒、镍、铜、锌、镉、铅的含量,采用微波消解电感耦合等离子体质谱(ICP-MS)法对土壤盲样进行研究,探讨了不同消解酸体系,检出限和定量限、测试模式和干扰消除、精密度和加标回收率、质控样品进行研究。结果表明:用6 mL HNO3,2 mL HCl和1 mL HF为混合酸体系,各待测元素标准曲线相关系数大于0.9995,检出限在0.001~2.985 mg.L-1,定量限在0.003~9.94 mg.L-1,采用氦气碰撞模式测试钒、镍、铜、锌、镉和铅,可以有效的降低多原子离子的干扰;采用no gas模式测试铍,可以有效的提高铍的测试灵敏度。方法精密度为0.2%~6.2%(n=6),加标回收率为92.3%~110.6%,采用土壤标准样品(GSS-4)进行全过程质控研究分析,各元素结果均在标准值参考范围内。用ICP-OES法测试土壤盲样中七种待测金属元素含量与用铑为内标的ICP-MS进行比对,测量分析结果基本一致。 相似文献
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Schimke I 《Analytical and bioanalytical chemistry》2009,393(5):1499-1504
In terms of testing, modern laboratory medicine can be divided into centralized testing in central laboratories and point-of-care
testing (POCT). Centralized laboratory medicine offers high-quality results, as guaranteed by the use of quality management
programs and the excellence of the staff. POCT is performed by clinical staff, and so such testing has moved back closer to
the patient. POCT has the advantage of shortening the turnaround time, which potentially benefits the patient. However, the
clinical laboratory testing expertise of clinical staff is limited. Consequently, when deciding which components of laboratory
testing must be conducted in central laboratories and which components as POCT (in relation to quality and timeliness), it
will be medical necessity, medical utility, technological capabilities and costs that will have to be ascertained. Provided
adequate quality can be guaranteed, POCT is preferable, considering its timeliness, when testing vital parameters. It is also
preferred when the central laboratory cannot guarantee the delivery of results of short turn-around-time (STAT) markers within
60 or (even better) 30 min. POCT should not replace centralized medical laboratory testing in general, but it should be used
in cases where positive effects on patient care have been clearly demonstrated. 相似文献
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In the U.S., all clinical laboratory testing is regulated by the Clinical Laboratory Improvement Amendments (CLIA) (). The CLIA link test quality and adherence to a body of testing regulations intended to ensure accurate, reliable, and timely patient test results. The goal of the CLIA legislation was to ensure a minimum, fundamental level of quality. In the context of “NEXUS,” quality must “go beyond getting the ‘right’ answer on the ‘right’ patient that can be interpreted against ‘right’ reference values. CLIA regulations with specific minimum, performance requirements, or safeguards, are designed to prevent testing errors. The US Institute of Medicine found that testing processes fail as a result of human error, lack of documentation, and lack of test management. In the latest (2004) interpretations of CLIA regulations, the minimum quality control requirement continues to be analyzing at least two external, liquid quality control materials per test per day. In 1995, we proposed that the responsibility for achieving quality test results shifts from the sole purview of the laboratory director to an “alliance” of laboratory professionals, manufacturers, and regulators. The EQC (equivalent quality control) concept as proposed is a positive step in achieving this alliance. With the obvious lack of scientific and statistical robustness, EQC falls far short of ensuring quality. Achieving the “NEXUS Vision” for quality laboratory testing will not come solely from laboratory professionals. The NEXUS is about how to ensure the full-quality assessment of the testing process – pre-analytical, analytical, and post-analytical.Presented at the 10th Conference Quality in the Spotlight, March 2005, Antwerp, Belgium. 相似文献
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Historically, due to the size and nature of the instrumentation, highly skilled laboratory professionals performed clinical
testing in centralized laboratories. Today’s clinicians demand realtime test data at the point of care. This has led to a
new generation of compact, portable instruments permitting ”laboratory” testing to be performed at or near the patient’s bedside
by nonlaboratory workers who are unfamiliar with testing practices. Poorly controlled testing processes leading to poor quality
test results are an insidious problem facing point of care testing today. Manufacturers are addressing this issue through
instrument design. Providers of clinical test results, regardless of location, working with manufacturers and regulators must
create and manage complete test systems that eliminate or minimize sources of error. The National Committee for Clinical Laboratory
Standards (NCCLS) in its EP18 guideline, ”Quality management for unit-use testing,” has developed a quality management system
approach specifically for test devices used for point of care testing (POCT). Simply stated, EP18 utilizes a ”sources of error”
matrix to identify and address potential errors that can impact the test result. The key is the quality systems approach where
all stakeholders – professionals, manufacturers and regulators – collaboratively seek ways to manage errors and ensure quality. We illustrate the use of one quality systems approach, EP18, as a means to advance the quality of test results at point of
care.
Received: 26 June, 2002 Accepted: 17 July 2002
Presented at the European Conference on Quality in the Spotlight in Medical Laboratories, 7–9 October 2001, Antwerp, Belgium
Abbreviations NCCLS National Committee for Clinical Laboratory Standards (formerly) · POCT point of care testing · QC quality control ·
HACCP hazard analysis critical control points · CLIA clinical laboratory improvement amendments (of 1988)
Correspondence to S. S. Ehrmeyer 相似文献
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Healthcare is changing and clinical laboratory testing must change with it. In no discipline is this change more profound
than in hematology. The principles of total quality management (TQM) including continuous quality improvement, reengineering
and strategic planning can facilitate these changes. In the past, hematology has often been exlcuded from these processes
due to its many manual procedures and the degree of expertise and skill needed to perform the testing. As automated technology
continues to evolve, hematology testing, like other testing, will become integrated into the core, clinical laboratory. We
suggest TQM can, and should, guide the way.
Received: 15 April 2000 · Accepted: 19 April 2000 相似文献