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目的:探讨无菌原料药生产环境甲醛熏蒸消毒的验证方法。方法:对一定量甲醛气体在规定的时间进行环境消毒,取样进行无菌测定,在不同时间排风后测定甲醛浓度以确定甲醛熏蒸时间和最佳排风时间。结果:最终确定了甲醛熏蒸消毒时间24h,排风≥9h对人身健康及产品安全最佳。结论:上述甲醛熏蒸消毒时间及排风时间仅适用于本企业无菌原料药车间,因各制药企业空调等设备系统不尽相同,可以采用本文提示的方法进行验证后确定具体时间。 相似文献
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对新装修某居民住宅室内空气中甲醛含量持续6个月采样分析,结果表明甲醛的释放量不是简单地和时间成反比。建议室内空气中的甲醛检测和结果评价,宜在一定温度条件下进行。 相似文献
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目的:了解沈阳市新装修住宅室内空气中甲醛的污染状况及影响因素。方法:依据《室内空气质量标准》(GB,/TI8883—2002)分笨同时间检潮20户住宅装修后空气中的甲醛浓度。结果:20户住宅装修后1、3、6个月测定甲醛浓度超标率为100%,95%、35%。三次测定的甲醛浓度有显著性差异,浓度分别为0.39mg/m^3、0.20mg/m^3、0.12mg/m^3,而且主卧室甲醛浓度高于客厅。结论;新装修居室空气中甲醛浓度污染严重,选择合理的装修时间和有效的通威是最直接、有效的降低甲醛的方法。 相似文献
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《科学与管理》2004,(6)
秘 鬓蘸 翼鬃 淤氦黝 葡甄 霸 鄂 均院 薰 粼 婴 瓣 薰 裴 麟蘸瓣 蒸 羞育挚舞 加从口二一韶一, 濒 山东省科技厅 瀚 副方〕时井奥家靓 攫 荞 l夔耙份 i翼撰 山东省即红城市人良医睬 熙 戴渐 .馨 暴 淞 蕊笔掀 撇 鳌 { 馨 框 煮 蒸摹翼耀 {藻好套擎罗澎l黝爵鬓粼死簇 湮 鬓 ; { l 秘椒裱 鬃 鑫 扳资毖舀 熊 氮 蒯 之瘫 布左- 绍滋 鬓 资灼禺疏 {. l撇 擎爹葬 靡 潺靴鞋曦 裳毅妻 瞥鬓鬓鬓 瓷 溯国弓铂 卜月 卜念佑韶r矛甲 汉 冬祖醉裂断石军 分怜瑞刀以t咐莎浏L公‘孟滩自圈西 面~熨二性竺卜竺产飞眨渔李 匀尸}当鸟吸弓虎云多书二函.州次签… 相似文献
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2001年1月我院手术室引进了KJD2000静电灭菌型空气净化机。通过甲醛熏蒸空气消毒和KJD2000静电灭菌空气净化机空气消毒效果两组数据对比,二者在空气消毒效果的菌落数无明显区别,但两者的消毒效果都基本上达到了医院感染管理规范中的要求。但使用KJD2000静电灭菌型空气净化机,简便,无刺激味,工作人员和病人容易接受,同时也减少了工作量,适应于产房、母婴同室病房等医院各病区的使用。 相似文献
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William E. McGrath 《Information processing & management》1978,14(1):17-28
In a university library, variability in circulation of books by subject area is partly but directly dependent on the academic program—e.g. if the anthropology department enrolls more students than the physics department, then more anthropology books should circulate. However, if the number of students enrolled in each subject is the same, the number of books circulated in one subject may still be larger than in the other. Therefore, other sources accounting for variability must be sought. One possible source is in the nature of the subjects themselves. For example, subjects (as represented by academic disciplines or departments) are often called hard or soft, pure or applied, life or nonlife. The purpose of this paper was to determine the relationship between these characteristics and the number of books charged out of an academic library by students. Three major hypotheses were formulated:(1) the softer a subject, the more books charged on that subject; the harder the subject, the fewer the books charged;(2) the purer the subject, the more books charged; the more applied the subject, the fewer the books charged;(3) The more a subject can be characterized as life oriented, the greater the difference in number of books charged between that subject and those characterized as nonlife oriented. A scale value for each characteristic in each of 60 academic subjects was determined by a survey of faculty of the University of Southwestern Louisiana. Correlation and multiple regression were employed to assess the proportion of circulation variance accounted for by each of the three characteristics. Other variables—masters, upper and lower level enrollments, credit hours being taught, number of books already in the library, and level of degree offered—were tested as controls. Hypothesis (1) was weakly supported under the condition that shelflist and masters enrollments were held constant (3% of variance). Support was somewhat firmer (10% variance) when the dependent variable was defined as proportion of shelflist circulated. Hard/soft was also significant (15% of variance) when pure/applied was held constant, but shelflist and enrollments were not. Hypothesis (2) was modestly supported under the condition that other variables were not held constant. Otherwise pure/applied was not significant. Together, pure/applied and hard/soft, in that order, and when no other variables were controlled accounted for 26% of the variance. Hypothesis (3) was not supported under any of the conditions tested. Results have implications in sociological understanding of the relationship between disciplines and library use, in formulating a rationale for library collection building, and in administrative, budget allocations to subjects. 相似文献
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随着互联网信息技术的迅猛发展,知识的传播不仅仅局限于传统的纸质图书等媒介,基于互联网信息技术而产生的电子图书开始逐渐进入人们的生活。电子图书的出现不仅改变了读者的阅读习惯,更改变了知识传播的模式。作为知识传播的中心---高校的图书采购工作将不得不面临新的挑战。本文将从电子出版物的发展趋势出发,在探讨纸质图书与电子图书的优劣势比较的基础上,研究了图书电子化趋势对高校图书采购的影响,重点分析了高校在图书电子化趋势下图书采购策略的调整问题。研究对于高校图书采购单位如何在图书电子化趋势下提升图书采购的质量具有一定的指导价值。 相似文献
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网络工具书资源的评价与利用 总被引:2,自引:0,他引:2
科学评价网络工具书资源有利于促进网络工具书的有效利用。网络工具书资源评价标准体系主要包括:内容评价和技术评价。提出了具体的评价指标,并介绍了几种常用的网络工具书资源。 相似文献
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【目的/意义】图书借阅数据的预测对于图书馆的资源建设和精准服务具有重要的指导意义。本文收集了
中国东北地区某双一流高校图书馆管理系统十年的借阅数据,并分别按图书类别、借阅者所属学院分类,对未来的
借阅趋势进行了预测。【方法/过程】本文使用一种基于时间序列的混合预测模型进行图书借阅数量的预测,其中混
合预测是一元时间序列预测与多元时间序列预测的结合。【结果/结论】实验结果表明,时间序列算法用于高校图书
馆借阅数据预测,2008 年到 2017 年借书数量由 300 左右增加到近 4000,2018 年到 2021 年 C、D、G、J、S、U、I类图书
中,D类、S类图书的借阅数量下降幅度最大,U类图书借阅数量下降幅度最小,T类、E类借阅量的上升幅度最大,Q
类、X类的误差率较大,研究结论供高校图书馆管理工作参考。【创新/局限】学界上针对图书馆馆藏资源建设和服务
创新研究较多,但以一元时间序列与多元时间序列预测角度进行研究的相对较少,本文弥补了此方面的不足。 相似文献
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本文借助国家图书馆联机公共书目查询系统、中国知网(CNKI)引文数据库,对我国2000-2009年10年间出版的信息检索类729种图书进行了统计分析,包括图书的年代分布及数量变化,学科分类、出版社、图书被引情况等,以期明确我国信息检索领域出版图书的现状及发展趋势,为出版单位制定出版规划、读者和文献收藏单位阅读和收藏信息检索类图书提供一种推荐的依据。 相似文献