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高精度薄膜生产线的水平层流环境营造技术
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作者 许洪章 耿佐力 《洁净与空调技术》 2016年第2期27-30,共4页
汽车反光膜、平板显示器、手机触摸屏等保护膜的制造和加工,其精度、纯度要求很严,通常都在洁净环境中生产。而且,这种洁净环境要求随着产品指标的提高而不断提高。原来在万级条件下的生产环境,现在普遍提高到千级,甚至百级。另一方面,... 汽车反光膜、平板显示器、手机触摸屏等保护膜的制造和加工,其精度、纯度要求很严,通常都在洁净环境中生产。而且,这种洁净环境要求随着产品指标的提高而不断提高。原来在万级条件下的生产环境,现在普遍提高到千级,甚至百级。另一方面,考虑到薄膜生产过程的特殊性,常用的垂直送风形式直接套用,存在着不少弊端,已逐步被更节能、气流更合理的水平层流方式所取代。对此类生产环境的特点,通过成功的水平层流案例,介绍一种已申请实用新型专利的水平层流安装模块。 展开更多
关键词 洁净环境 垂直送风 垂直层流 水平层流 水平层流安装模块
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双向出风水平层流净化工作台的研究 被引量:1
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作者 赵旭东 《太原工业大学学报》 1996年第4期91-94,共4页
本文提出了一种新型结构的净化工作台——双向出风水平层流净化工作台。分析了该工作台的结构特征及设计注意事宜。通过与常规水平层流净化工作台的比较及实验结果分析,指出了该产品的经济性。
关键词 双向出风 水平层流 净化工作台 空气净化设备
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浅谈静脉药物配置中心水平层流工作台的操作与维护 被引量:3
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作者 吴晓燕 任俊辉 孟德胜 《中国药房》 CAS CSCD 北大核心 2010年第13期1208-1209,共2页
目的:介绍静脉药物配置中心水平层流工作台操作注意事项及日常维护方法,为水平层流工作台的规范使用提供参考。方法:从水平层流工作台的组成、工作原理、操作注意事项等方面探讨水平层流工作台的规范使用及维护。结果与结论:静脉药物配... 目的:介绍静脉药物配置中心水平层流工作台操作注意事项及日常维护方法,为水平层流工作台的规范使用提供参考。方法:从水平层流工作台的组成、工作原理、操作注意事项等方面探讨水平层流工作台的规范使用及维护。结果与结论:静脉药物配置中心水平层流工作台的规范操作和正确维护保证了静脉药物配置的质量,延长了水平层流工作台的使用寿命。 展开更多
关键词 静脉药物配置中心 水平层流工作台 操作 维护 注意事项
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水平层流洁净室及其在骨髓移植中的应用
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作者 郭乃榄 陆道培 +1 位作者 王逸兰 汪洁荣 《中华器官移植杂志》 CAS 1988年第1期17-19,共3页
关键词 水平层流 洁净室 骨髓移植 BONE MARROW TRANSPLANTATION ROOM Air Flow
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Flagship在中高含水期水平井中的应用研究 被引量:16
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作者 郭洪志 李冬梅 《西南石油大学学报(自然科学版)》 CAS CSCD 北大核心 2009年第1期107-110,共4页
斯伦贝谢公司的Flagship生产测井旗舰是在深入研究水平多相流流态的基础上开发的,适用于大斜度井和水平井的测井仪器组合,能为水平井提供高精度的生产测井数据。并以新颖的MaxTRAC往复式爬行器为传输工具保证测井顺利进行,另外形成了一... 斯伦贝谢公司的Flagship生产测井旗舰是在深入研究水平多相流流态的基础上开发的,适用于大斜度井和水平井的测井仪器组合,能为水平井提供高精度的生产测井数据。并以新颖的MaxTRAC往复式爬行器为传输工具保证测井顺利进行,另外形成了一套成熟的综合解释模型,保证生产测井结果真实客观地反映井下产出状况。以塔河油田一口中高含水、超深砂岩油藏水平井为例,总结了Flagship的测井设计原理、施工步骤、技术关键及测井评价效果分析,并提出了水平井生产测井尚待解决的问题,为油田使用这项技术提供参考。 展开更多
关键词 水平 水平层流 产液剖面 Flagship生产测井旗舰 MaxTRAC爬行器
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重症烧伤伤员层流病房的护理
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作者 杨骏 任珊娜 《南京部队医药》 1995年第4期50-51,共2页
我院的层流病房区域内面积为37.8m^2,其中病室净面积为12.1m^2,为100级水平层流型生物洁净室。自应用于重症烧伤病人以来,效果良好,现报告如下。1水平层流病房的性能 水平层流病房是通过控制室内正压而成为封闭式的隔离区域。室内空气... 我院的层流病房区域内面积为37.8m^2,其中病室净面积为12.1m^2,为100级水平层流型生物洁净室。自应用于重症烧伤病人以来,效果良好,现报告如下。1水平层流病房的性能 水平层流病房是通过控制室内正压而成为封闭式的隔离区域。室内空气通过小于0.2μm孔隙的无纺布进入高效滤过器,经除尘、除菌后以0.2m/s流速定向流动。 展开更多
关键词 层流病房 重症烧伤 水平层流 伤伤 室内空气 84消毒液 生物洁净室 缓冲室 滤过器 生物净化
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锐器盒存放架的制作及在静脉药物调配中心的应用 被引量:4
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作者 李爱萍 刘斌 +2 位作者 赵育红 王佑发 赵红 《护理学杂志》 CSCD 2016年第3期49-50,共2页
目的提高静脉药物调配中心配制药物的效率和安全性。方法采用钢板、碳钢材料自行设计制作锐器盒存放架,安装于静脉药物调配中心水平层流台底部,用于放置锐器盒。采用常规锐器盒放置方式(常规方法)配制药物30次,每次20组;采用锐器盒存放... 目的提高静脉药物调配中心配制药物的效率和安全性。方法采用钢板、碳钢材料自行设计制作锐器盒存放架,安装于静脉药物调配中心水平层流台底部,用于放置锐器盒。采用常规锐器盒放置方式(常规方法)配制药物30次,每次20组;采用锐器盒存放架放置锐器盒(改进方法)配制同等量的药物。比较2种方法配制药物所用时间及药液溅湿水平层流防护网率。结果 2项指标改进方法显著优于常规方法(均P<0.01)。结论锐器盒存放架的应用,使水平层流台风向无阻碍;同时方便操作,有效提高了工作效率和配药安全性。 展开更多
关键词 静脉药物调配中心 锐器盒 水平层流 存放架 制作 应用
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静脉药物配置中心净化设计中应注意的几个问题 被引量:5
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作者 徐希成 陈泽彬 《儿科药学杂志》 CAS 2004年第6期28-28,38,共2页
通过分析四种医院PIVAs的净化设计方案存在的缺陷,认为在医院PIVAs的净化设计方面各地可能质量会参差不齐,呼吁尽快建立统一的规范标准,以利于PIVAs在我国的顺利发展。
关键词 PIVAS 净化设计 垂直层流 水平层流
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净化设备在静脉药物配置中心的用法及维护 被引量:2
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作者 易恒冰 《医疗装备》 2015年第11期99-100,共2页
将静脉药物进行集中配置,其根本目的在于减少护理人员的工作强度,使之有更多的时间来看护患者,在根本上控制了医护人员的潜在职业风险,有效避免医源感染,为患者提供更为安全的临床药物,水平层流台和生物安全柜是配置中心的两种重要净化... 将静脉药物进行集中配置,其根本目的在于减少护理人员的工作强度,使之有更多的时间来看护患者,在根本上控制了医护人员的潜在职业风险,有效避免医源感染,为患者提供更为安全的临床药物,水平层流台和生物安全柜是配置中心的两种重要净化设备,对两者的使用和维护方法进行探究具有现实意义。结合实际情况,本文对水平层流台及生物安全柜的使用及保养方法进行全面探究。 展开更多
关键词 静脉药物配置 水平层流 生物安全柜 使用 维护
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自净器安装形式与使用的体会
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作者 吴瑞英 《中国医院药学杂志》 CAS CSCD 北大核心 1993年第10期37-38,共2页
医院所采用的自净器与安装形式不尽相同。现将我院制剂室安装自净器型式与使用的体会简介如下:由于灌装室内空间小密封性强,温室效应明显,在室内作业闷热。为解决这个问题,我室采用局部水平层流加全室乱流型。
关键词 密封性 自净器 安装形式 隔层 水平层流 温室效应 室内空间 室内作业 制剂室 乱流型
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生物洁净手术室的管理(综述)
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作者 童志丹 刘美林 《天津护理》 1994年第2期77-79,共3页
生物洁净手术室(Bio-clean Operating room 简称BCOR)自1951年由航天技术发展而来,1966年正式用于医院。我国于八十年代初在沈阳建成以来,发展迅速,到目前为止,已被全国数十家医院所采用。在先进的设备条件下,如何针对其特殊性。
关键词 洁净手术室 净化手术室 生物 高效过滤器 层流手术室 净化效果 手术区 手术间 水平层流 切口感染率
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医药洁净冷胚间设计与施工
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作者 赵伟 林盼 +1 位作者 陈辉 唐叶辰 《洁净与空调技术》 2020年第2期10-14,共5页
药厂生物疫苗类项目,洁净冷胚间的功能相当重要,其温度让病毒和鸡胚停止生长,大概10h,完全冷后再收获。现某疫苗项目冷胚间温度要求为2℃,相对湿度要求为45%~65%,如何在满足温度的同时满足湿度要求,满足货架竖向布置中所有格层的温度的... 药厂生物疫苗类项目,洁净冷胚间的功能相当重要,其温度让病毒和鸡胚停止生长,大概10h,完全冷后再收获。现某疫苗项目冷胚间温度要求为2℃,相对湿度要求为45%~65%,如何在满足温度的同时满足湿度要求,满足货架竖向布置中所有格层的温度的均匀性,满足GMP对医药洁净室洁净度要求,是洁净冷胚间的设计及施工难点,也是本项目成败的关键点。 展开更多
关键词 医药 冷胚间 洁净 地面保温 水平层流 高精度
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Interfacial Shear Stress of Stratified Flow in a Horizontal Pipe 被引量:1
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作者 李卫东 孙科霞 周芳德 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 1999年第3期263-270,共8页
Experimental data are presented for the void fraction and the shear stresses of stratified gas-liquid flow in a pipe. A new technique was used to measure the interface shear stress. The interfacial shear stress was de... Experimental data are presented for the void fraction and the shear stresses of stratified gas-liquid flow in a pipe. A new technique was used to measure the interface shear stress. The interfacial shear stress was determined by using two methods: a momentum balance of gas and an extrapolation of the Reynolds shear stress profile at the gas-liquid interface. A new formula , relating to the interfacial friction factor with the void fraction and superficial gas Reynold number, was developed to predict the interface shear stress . The predicted values are in good agreement with experimental data. 展开更多
关键词 interfacial shear stress stratified flow laser doppler velocitometer
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Stability of Stratified Gas-Liquid Flow in Horizontal and Near Horizontal Pipes 被引量:3
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作者 顾汉洋 郭烈锦 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2007年第5期619-625,共7页
A viscous Kelvin-Helmholtz criterion of the interfacial wave instability is proposed in this paper based on the linear stability analysis of a transient one-dimensional two-fluid model. In thismodel, the pressure is e... A viscous Kelvin-Helmholtz criterion of the interfacial wave instability is proposed in this paper based on the linear stability analysis of a transient one-dimensional two-fluid model. In thismodel, the pressure is evaluated using the local momentum balance rather than the hydrostatic approximation. The criterion predicts well the stability limit of stratified flow in horizontal and nearly horizontal pipes. The experimental and theoretical investigation on the effect of pipe inclination on the interfacial instability are carded out. It is found that the critical liquid height at the onset of interfacial wave instability is insensitive to the pipe inclination. However, the pipe inclination significantly affects critical superficial liquid velocity and wave velocity especially lor low gas velocities. 展开更多
关键词 two-fluid model Kelvin-Helmholtz criterion interfacial instability gas-liquid stratified flow
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Experimental Research on Gas-Liquid Two-Phase Spiral Flow in Horizontal Pipe 被引量:7
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作者 Wang Shuli Rao Yongchao +1 位作者 Wu Yuxian Wang Xiaobing 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2012年第3期24-32,共9页
In view of the importance of gas-liquid two-phase spiral flow and the few research reports at home and abroad,the gas-liquid two-phase spiral flow patterns have been researched in a horizontal pipe with different para... In view of the importance of gas-liquid two-phase spiral flow and the few research reports at home and abroad,the gas-liquid two-phase spiral flow patterns have been researched in a horizontal pipe with different parameters investigated by means of observation and a high-speed camera.Since the appearance of spiral flow makes the distribution of twophase flow more complicated,the flow patterns appearing in the experiments were divided into the Spiral Wavy Stratified Flow(SWS),the Spiral Bubble Flow(SB),the Spiral Slug Flow(SS),the Spiral Linear Flow(SL),the Spiral Axial Flow(SA),and the Spiral Dispersed Flow(SD) by the observations and with reference to the predecessors' research achievements.A flow pattern map has been drawn up.The influence of velocity,vane angle and vane area on flow pattern conversion boundary and pressure drop has been studied,with a solid foundation laid for the future research work. 展开更多
关键词 gas-liquid two-phase spiral flow VANE flow pattern flow pattern map experimental research
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Upregulated CD133 expression in tumorigenesis of colon cancer cells 被引量:9
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作者 Zhi-Li Yang Qi Zheng Jun Yan Ye Pan Zhi-Gang Wang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第7期932-937,共6页
AIM: To analyze the upregulated CD133 expression in tumorigenesis of primary colon cancer cells. METHODS: Upregulated CD133 expression in tumorigenesis of colorectal cancer cell lines (Lovo, Colo205, Caco-2, HCT116 an... AIM: To analyze the upregulated CD133 expression in tumorigenesis of primary colon cancer cells. METHODS: Upregulated CD133 expression in tumorigenesis of colorectal cancer cell lines (Lovo, Colo205, Caco-2, HCT116 and SW620) was analyzed by flow cytometry. Human colon cancer tissue samples were stained with anti-human CD133. SW620 cells were sorted according to the CD133 expression level measured by fluorescence-activated cell sorting. Spheroids of colorectal cancer cells were cultured with the hanging drop. Expression of CD133 and Lgr5 in spheroids of colorectal cancer cells and monolayer culture was detected by RT-qPCR. Spheroids of colorectal cancer cells were analyzed using anti-human CD133 with immunohistochemical staining. RESULTS: CD133 antigen was expressed in colorectal cancer cell lines (Lovo, Colo205, Caco-2, HCT116 and SW620) as well as in primary and metastatic human colon cancer tissues. However, the CD133 was differently expressed in these cell lines and tissues. The expression levels of CD133 and Lgr5 were significantly higher in spheroids of parental, CD133hi and CD133-cells than in their monolayer culture at the mRNA level (P < 0.05). Immunohistochemical staining of spheroids of CD133-cells showed that CD133 was highly expressed in colorectal cancer cell lines. CONCLUSION: Upregulated CD133 expression plays a role in tumorigenesis colorectal cancer cells, which may promote the expression of other critical genes that can drive tumorigenesis. 展开更多
关键词 CD133 Colon cancer cells TUMORIGENESIS Cancer stem cells
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Flame development characteristics at variable swirl level inductions in a stratified CNG direct injection combustion engine
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作者 Yohannes T. Anbese A. Rashid A. Aziz Zainal Ambri B. A. Karim 《Journal of Energy and Power Engineering》 2009年第12期1-9,52,共10页
The study of flame development characteristics is crucial in the study of flame propagation, extinction, and for the investigation of combustion cyclic variability in SI engine. The aim of this study is to investigate... The study of flame development characteristics is crucial in the study of flame propagation, extinction, and for the investigation of combustion cyclic variability in SI engine. The aim of this study is to investigate the characteristics of flame development in a lean-stratified combustion of Natural Gas Engine (CNG) in a single cylinder direct injection (DI) engine at a specific motor speed, and fixed injection timing and air-fuel ratio by varying only the swirl level at the intake. The engine was set to run at 1800 rpm with half-load throttled. The ignition advance was set at 21.5 BTDC, and to create an overall lean and stratified mixture, injection timing was set at 61 BTDC with an air-fuel-ratio of 40.5 (λ=2.35). Variable turbulent flow conditions near spark-plug were created by positioning the swirl control valves (SCV) at the intake port just before the two intake valves. This was done by setting one of the valves at full open position and the other one at 0% closed, 50% closed and 100% closed positions in order to achieve medium tumble (no swirl), medium swirl and high swirl flows in the cylinder, respectively. An endoscope and CCD camera assembly was utilized to capture the flame images from the tumble plane at the intake side of the engine ever), 2 CA degrees after ignition timing (AIT) for 40 CAs. It was observed that flame growth rate and flame convection velocity are increasing with increasing the swirl level. The total combustion duration is, thus, shorter in swirl induced combustion than without. However, COV in IMEP is greater in swirl induced flow cases than the medium tumble. 展开更多
关键词 flame development: swirl flow: tumble flow image processing
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Laminar Forced Convection from a Rotating Horizontal Cylinder in Cross Flow
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作者 Prabul Chandran G.Venugopal +1 位作者 H.Abdul Jaleel M.R.Rajkumar 《Journal of Thermal Science》 SCIE EI CAS CSCD 2017年第2期153-159,共7页
The influence of non-dimensional rotational velocity, flow Reynolds number and Prandtl number of the fluid on laminar forced convection from a rotating horizontal cylinder subject to constant heat flux boundary condit... The influence of non-dimensional rotational velocity, flow Reynolds number and Prandtl number of the fluid on laminar forced convection from a rotating horizontal cylinder subject to constant heat flux boundary condition is numerically investigated. The numerical simulations have been conducted using commercial Computational Fluid Dynamics package CFX available in ANSYS Workbench 14. Results are presented for the non-dimensional rotational velocity α ranging from 0 to 4, flow Reynolds number from 25 to 40 and Prandtl number of the fluid from 0.7 to 5.4. The rotational effects results in reduction in heat transfer compared to heat transfer from stationary heated cylinder due to thickening of boundary layer as consequence of the rotation of the cylinder. Heat transfer rate increases with increase in Prandtl number of the fluid. 展开更多
关键词 Heated rotating cylinder Non-dimensional rotational velocity Flow Reynolds number Prandtl number
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Direct Numerical Simulation of Convective Heat Transfer in a Zero-Pressure-Gradient Boundary Layer with Supercritical Water 被引量:2
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作者 C. Azih J.R. Brinkerhoff M.I. Yaras 《Journal of Thermal Science》 SCIE EI CAS CSCD 2012年第1期49-59,共11页
Experimental research has long shown that forced-convective heat transfer in wall-bounded turbulent flows of fluids in the supercritical thermodynamic state is not accurately predicted by correlations that have been d... Experimental research has long shown that forced-convective heat transfer in wall-bounded turbulent flows of fluids in the supercritical thermodynamic state is not accurately predicted by correlations that have been developed for single-phase fluids in the subcritical thermodynamic state. In the present computational study, the statistical properties of turbulent flow as well as the development of coherent flow structures in a zero-pressuregradient flat-plate boundary layer are investigated in the absence of body forces, where the working fluid is in the supercritical thermodynamic state. The simulated boundary layers are developed to a friction Reynolds number of 250 for two heat-flux to mass-flux ratios corresponding to cases where normal heat transfer and improved heat transfer are observed. In the case where improved heat transfer is observed, spanwise spacing of the near-wall coherent flow structures is reduced due to a relatively less stable flow environment resulting from the lower magnitudes of the wall-normal viscosity-gradient profile. 展开更多
关键词 boundary layer TURBULENCE supercritical fluids improved heat transfer DNS
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