有色冶金实验室样品管理及制备

主要论述有色冶金实验室样品的管理及制备.有色冶金实验室主要针对有色行业的矿石样品、生产过程中产生的水样、选矿生产的粉末样品及冶金产品样品的化验分析.实验室样品管理的目的是保证样品在实验室检测过程中的有效性与完整性,因此必须对样品的流转、存贮及处置进行有效的控制,确保分析检测结果的准确可靠.样品制备是实验室开始样品检测的...     

关于选矿用石灰检测化验工作的思考

针对如何做好选矿用石灰的检测化验工作展开讨论与思考。通过大量实验论述了在检测过程中不同工艺流程、不同取样方式、不同取样点对石灰检测品位的影响;同时,对化验过程中的各个影响进行了分析,从而保证检测化验的质量。     

有色金属建设行业水泥物理性能能力验证结果分析

本史通过对有色建设行业实验检测机构水泥物理性能的实验室比对能力验证结果进行统计计算，客观分析了行业实验室的检测能力和检测项目需要注意的问题，对今后提高有色建设行业实验检测能力具有很好的指导作用。     

入侵检测技术在检化验网络中的应用

入侵检测技术在网络安全中起着重要的作用,文章描述了入侵检测技术的概念、功能和性能指标,介绍了入侵检测技术在宝钢检化验网络中的应用。     

铜精矿中铜品位化验结果产生偏差的原因分析

大宝山矿由黑色矿山转为有色矿山,7 000 t/d新选厂的建成大大提高铜精矿的产量,为了指导选厂生产和提高销售质量,铜精矿中铜品位的化验尤为重要.文章按照国家标准GB/T3884.1-2012《碘量法测定铜精矿中铜的含量》的方法,对整个化验过程详细分析,从溶液的酸碱度、硫代硫酸钠标准溶液的浓度、硫代硫酸钠标准溶液的标定周期、碘化钾的添加形式等方面进行研究,找出了化验结果产生偏差的原因,提高了化验人员的分析水平,为生产和销售提供准确的分析数据.     

钢铁企业检化验系统的建设与管理

钢铁企业检化验系统是对进厂原材物料及生产过程、工序间、出厂产品的检验,其分析检测方法包括化学检测和物理检测,分析实验室分集中式和分散式两种管理模式和布局,系统配备包括设备配备和检测人员的配置。制定监督机制和加强设备仪器管理,是保证检化验工作顺利进行的重要条件。     

浙江省冶金研究院理化中心 浙江浙冶冶金产品质量检测有限公司

浙江省冶金研究院理化检测中心暨浙江浙冶冶金产品质量检测有限公司，主要从事冶金、有色行业产品物理、化学检测，是浙江省冶金有色产品的专业质量检验权威机构。中心具有独立法人资格，是浙江省政府首批授权成立的省级质检机构和浙江省高级人民法院对外委托司法鉴定机构。     

韶钢质量检测网络系统的开发

介绍质最检测网络系统的开发，该系统用于韶钢物资检化验和钢材质量判定业务．     

上海海舍仪器设备有限公司

<正>服务行业:黑色冶金、有色冶金、煤化工、盐化工…主要用户:宝钢、重钢、鞍钢、攀钢、本钢、中铝、盐湖集团…上海海舍是一家具有国内领先水平的工厂检化验设施建设者,多年来以设计咨询、设备采购(制造、销售)、施工安装、维护管理和技术服务(EPCS)的总集成总承包模式为众多的实验室提供了一体化的系统解决方案,填补了用户、设计院与分析仪器设备制造商之间因条块分隔产生的盲区和空白,协助用户快速建立     

57%钼精矿在线检测技术应用研究

主要通过与化学分析检测结果的对比分析,确认DF-5751型X荧光在线多元素分析仪即时为57%钼精矿生产过程提供相关元素检测数据的偏差符合相关标准[1~2],使57%钼精矿生产化验从事后化学分析检测变为现场在线检测分析。     

Detection methods of Helicobacter pylori: accuracy and costs

A variety of methods exist for determining gastric colonization with Helicobacter pylori, which has been implicated in the development of peptic ulcer disease. The goal of this study was to evaluate four of the current methods available in a clinical surgical practice setting through a prospective evaluation of 40 consecutive patients undergoing upper diagnostic endoscopy. All patients underwent six antral gastric biopsies for use with the following detection methods: histologic demonstration of organisms (hematoxylin and eosin stain), direct detection of urease activity (Remel Selective Rapid Urea, Lenexa, KS), and culture of H. pylori. All patients also had measurement of serum immunoglobulin G for H. pylori by the enzyme-linked immunosorbent assay method (Corning Clinical Laboratories, St. Louis, MO). The infection status was established by a concordance of test results. The results show that H. pylori can be assessed equally well with histology, a rapid urease test, and serology, with all three tests having good sensitivity (92-100%) and specificity (85-96%). The culturing of the organism had poor sensitivity (42%). The benefits of the urease test are a much more rapid response time and a much lower cost as compared to histologic and serologic testing. In conclusion, the rapid urease test is the method of choice to detect H. pylori in those patients undergoing endoscopy in whom the identification of H. pylori will change their management.     

邯钢烧结矿实时检测准确性的提高

烧结矿是高炉炼铁主要含铁料,邯钢炼铁部技术科通过一系列的措施提高了烧结矿实时检测数据的准确性,利用统计学分析数据,为高炉炼铁生产提供了及时数据,也为烧结车间反馈了实时数据,促进了生产系统的稳定。     

浅谈工业锅炉水质检测及处理中出现的常见问题及对策

在现代工业生产领域中,最重要的设备就是锅炉,并且在锅炉的应用中有着极高的要求。那么,为了进一步确保在锅炉的应用中满足相应的要求,必须要做好工业锅炉的检验工作。在工业锅炉检测中,水质检测是其中比较关键的环节,同时它具有一定的重要性,水质检测的结果会对工业锅炉的运行起到直接影响。目前来看,在工业锅炉运行中还存在着一系列的问题,并且这些问题都与水质检测效果有着紧密的联系。因此,要不断提高工业锅炉水质检测工作的整体质量,只有这样,才能为我国工业的稳定发展提供保障。     

能力验证提升实验室检测水平的实证研究

为分析能力验证对实验室检测能力提升的促进方式,定量能力验证对实验室检测能力的提升效能,分析了305家实验室2010-2015年间参加柴油检测能力验证的3 133个评价结果和能力评价统计量|Z|值的变动趋势。研究表明,随参加能力验证次数增加,实验室检测能力显著提高,但单次能力验证不能有效保证持续检测能力。通过3轮能力验证,实验室能够基本消除检测过程中的关键错误。对于不同检测项目间能力验证的相互作用研究表明,通过参加某一项目的能力验证,实验室提高了其他项目的技术水平,表明能力验证能够促进实验室整体能力提升,而非局限于单一的检测项目。能力验证对实验室检测能力的作用方式可分为2种,一种通过消除检测技术的关键错误,直接提升能力验证参加项目的技术水平;另一种通过提升实验室整体管理能力,间接提升其他检测项目的技术水平。     

拉曼光谱检测PVC塑料中邻苯二甲酸二乙基己基酯的方法优化

为了提高拉曼光谱快速定量检测PVC塑料中邻苯二甲酸二乙基己基酯(DEHP)塑化剂的准确性和可靠性,研究了样品厚度、激光波长、激光功率、测试时间、降噪方式、光漂白时间及信号叠加次数等实验条件对PVC基体中DEHP拉曼光谱信号强度的影响规律.获得了拉曼光谱最佳的测试参数,包括:样品的厚度不小于5 mm;入射激光波长785 ...     

Perception of Objects in Natural Scenes: Is It Really Attention Free?

Studies have suggested attention-free semantic processing of natural scenes in which concurrent tasks leave category detection unimpaired (e.g., F. Li, R. VanRullen, C. Koch, & P. Perona, 2002). Could this ability reflect detection of disjunctive feature sets rather than high-level binding? Participants detected an animal target in a rapid serial visual presentation (RSVP) sequence and then reported its identity and location. They frequently failed to identify or to localize targets that they had correctly detected, suggesting that detection was based only on partial processing. Detection of targets was considerably worse in sequences that also contained humans, presumably because of shared features. When 2 targets were presented in RSVP, a prolonged attentional blink appeared that was almost eliminated when both targets were detected without being identified. The results suggest rapid feature analysis mediating detection, followed by attention-demanding binding for identification and localization. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

中厚板厚度中心处裂纹分析与控制

针对探伤合格率低的问题,对探伤不合钢板进行解剖分析,认为引起探伤不合的原因是钢板厚度中心处存在聚集分布的微裂纹。通过对微裂纹产生主要因素的调查和针对性的对比试验,发现微裂纹的产生除与铸坯偏析、MnS夹杂、道次压下率等有关外,钢中的H含量是一个至关重要的影响因素。通过采取降低钢中H含量的措施,实现了钢中H含量的大幅度降低,探伤合格率由原来的95%提高到98%以上。     

Detection versus perception: Physiological and behavioral analysis of olfactory sensitivity in the moth (Manduca sexta).

The precise relationship between olfactory transduction sensitivity and sensitivity at the level of sensory perception is poorly understood. The goal of this work was to correlate neurophysiological measures of sensory transduction and psychophysical measures of salient odor perception using the moth (Manduca sexta). Moths were conditioned to respond to a single monomolecular odor and then tested across a dilution series. Resulting concentration-response functions were dependent on the conditioning odor and its concentration but not on the moth's sex. Comparison of responsiveness to odor versus an odorless blank provided a statistical indicator of detection threshold. Separate control experiments revealed that conditioned responsiveness to odor was a function of test concentration and independent of the conditioning concentration. Next, electroantennogram (EAG) responses to these odorants and concentrations were recorded. EAG responses were highly correlated with the behavioral results but typically identified lower detection thresholds. Furthermore, significant effects of sex, Sex × Odor, and Sex × Odor × Concentration were observed only within the EAG data, suggesting a mismatch across methods. Possible reasons for and implications of this mismatch are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

舞钢新线宽厚板探伤不合原因分析

通过对近期探伤不合钢板进行统计分析,借助低倍、厚拉、金相及扫描电镜等检验手段对典型缺陷进行分析,得出造成探伤不合的主要缺陷是严重的偏析与疏松,并提出相应的改进措施。     

填埋场防渗效果检测的重要性分析

在分析填埋场HDPE膜渗漏原因和介绍渗漏检测技术的基础上,对某垃圾填埋场进行了渗漏预测,得出渗漏量占渗滤液总量的3．67％．7LHDPE膜防渗层渗漏检测的重要性,并阐明了渗漏检测和维护修补减少的渗漏污染对应的价值将远大于检测和修补的投资。