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英语沙龙（高中） 2015年第4期 34-35,50-51页

作者： Alison Pearce stevens

How Many Turns for the Tern

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英语沙龙（高中） 2015年第6期 44-45,60-61页

作者： Alison Pearce stevens

Removal of Nick.l (II) and Cobalt (II) from Wastewater Using Vinegar-Treated Eggshell Waste Biomass

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Journal of Water Resource and Protection 2017年第8期9卷 931-944页

作者： Morlu stevens Barek. Batlok.a Department of Chemical and Forensic Sciences Botswana International University of Science and Technology Palapye Botswana

The use of waste materials as low-cost adsorbents is attractive due to their contribution in the reduction of costs for waste disposal, therefore contributing to environmental protection and most importantly, offers an attractive potential alternative to their conventional methods of removal of toxic ions from wastewater. Eggshells are naturally occurring and an abundant biomass that has proven to offer an economic solution for toxic ions removal. The eggshell biomass was treated with acetic acid (vinegar). Nick.l (II) and Cobalt (II) ions were selected as model ions to demonstrate the potential of eggshell waste in removing excess toxic heavy metal ions from wastewater. All the experiments were carried out in batch process with laboratory prepared samples. Multivariate optimization method was used to identify factors affecting adsorption. These factors included metal ion concentration, pH, contact time and biomass dosage on removal of nick.l and cobalt from wastewater effluent was investigated. Two-level fraction factorial and central composite design were used for optimization methods. Fourier Transform Infrared Spectroscopy, Raman Spectroscopy, and Scanning Electron Microscopy coupled with Energy-dispersive X-ray spectroscopy were used to study physical properties of the waste material. The percentage removal of Nick.l (II) and Cobalt (II) was 78.70 ± 1.02 and 76.53 ± 1.21 respectively. Vinegar-treated eggshells were proposed as eco-friendly, cheap, easily available and an efficient method for removal of heavy metals from the environment.

关键词： Nick.l Cobalt Vinegar-Treated Biomass Eggshells Wastewater Optimization Adsorption

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Holy to the Core

英语学习 1999年第11期 28-30页

作者： Lisa stevens 吕行

The olives gleamed as ifbrushed with oil. There werebarrels of them and the man inthe stall behind them called out to thepassers-by in a language that couldhave been Arabic or Hebrew orPersian. Other vendors also beck.ned thecrowd from under tattered awnings andsoon it was hard to decipher who wasspeak.ng what ancient language. Rows of merchants hawk.dtranslucent green grapes, perfectly

关键词： Holy to the Core

Cotton Utilization in Conventional and Non-Conventional Textiles—A Statistical Review

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Agricultural Sciences 2016年第10期7卷 747-758页

作者： Mourad k.ifa Sara Stewart stevens Department of Textiles and Apparel The University of Texas Austin TX USA

World textile fiber demand was 89.8 million tons in 2015 and is expected to grow to 93.7 million tons in 2016. Global demand for textile fibers is driven by population growth and by economic activity resulting in increasing wealth, particularly in emerging economies. While this overall trend is consistent across most major fibers, there are substantial disparities in the demand patterns of natural versus man-made fiber, with cotton and polyester being the primary protagonists. This paper charts recent trends and potential opportunities relevant to cotton fiber utilization in conventional and non-conventional textile products.

关键词： Cotton Utilization Textiles Clothing Nonwovens Mark.t

Diagnostic and therapeutic direct peroral cholangioscopy using an intraductal anchoring balloon

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World Journal of Gastroenterology 2012年第30期18卷 3992-3996页

作者： Mansour A Parsi Tyler stevens John J Vargo Department of Gastroenterology and Hepatology Digestive Disease InstituteCleveland ClinicClevelandOH 44195United States

AIM:To report our experience using a recently introduced anchoring balloon for diagnostic and therapeutic direct peroral cholangioscopy(DPOC).METHODS:Consecutive patients referred for diagnostic or therapeutic peroral cholangioscopy were evaluated in a prospective cohort *** patients underwent DPOC using an intraductal anchoring balloon,which was recently introduced to allow consistent access to the biliary tree with an ultraslim upper *** device was later voluntarily withdrawn from the mark.t by the ***:Fourteen patients underwent DPOC using the anchoring *** access with an ultraslim upper endoscope was accomplished in all 14 *** 12(86%) patients,ductal access required sphincteroplasty with a 10-mm dilating *** placement of the ultraslim upper endoscope allowed satisfactory visualization of the biliary mucosa to the level of the confluence of the right and left hepatic ducts in 13 of 14 patients(93%).Therapeutic interventions by DPOC were successfully completed in all five attempted cases(intraductal biopsy in one and DPOC guided laser lithotripsy in four).Adverse events occurred in a patient on immunosuppressive therapy who developed an intrahepatic biloma at the site of the anchoring *** required hospitalization and *** endoscopic retrograde cholangiopancreatography 8 wk.after the index procedure showed resolution of the ***:Use of this anchoring balloon allowed consistent access to the biliary tree for performance of diagnostic and therapeutic DPOC distal to the biliary bifurcation.

关键词： Anchoring balloon Direct peroral cholangioscopy Cholangiocarcinoma Endoscopic retrograde cholangiopancreatography Choledocholithiasis

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在肿瘤治疗中应用图形化系统设计模式

电子技术应用 2008年第11期34卷 21-22页

作者： Jeff stevens 美国国家仪器有限公司

Sanarus是一家医疗设备的新兴企业，为开发治疗良性肿瘤的潜在革命性产品制定了计划。医生使用这种设备，能够通过冷冻杀死肿瘤，以一种对病人几乎无痛的方式摘除肿瘤，这与过去使用的快速的手术解决方法或是“等着看”的方法相比有着... 详细信息

Sanarus是一家医疗设备的新兴企业，为开发治疗良性肿瘤的潜在革命性产品制定了计划。医生使用这种设备，能够通过冷冻杀死肿瘤，以一种对病人几乎无痛的方式摘除肿瘤，这与过去使用的快速的手术解决方法或是“等着看”的方法相比有着巨大的变化。利用这种便于执行的设计与开发计划，有希望能够开拓对乳腺癌治疗产生巨大影响的产品市场。

关键词：肿瘤治疗设计模式图形化系统应用医疗设备产品市场良性肿瘤

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太极拳用于预防老年人跌倒:公共健康的视角(英文)

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Journal of Sport and Health Science 2014年第1期3卷 21-26+1+64页

作者： Judy A.stevens Alexander Vouk.latos Heidi Ehrenreich National Center for Injury Prevention and Control Centers for Disease Control and Prevention School of Public Health and Community Medicine The University of New South Wales

65岁以上人群的跌倒是一项重要的公共健康问题,而且会随着老龄人口的增加而日益严峻。随机对照实验证明,太极拳能降低老年人跌倒及相关损伤几率。本文介绍了公共卫生和老龄人口服务组织如何运用太极拳社区计划减少老年人跌倒,并总结出,... 详细信息

65岁以上人群的跌倒是一项重要的公共健康问题,而且会随着老龄人口的增加而日益严峻。随机对照实验证明,太极拳能降低老年人跌倒及相关损伤几率。本文介绍了公共卫生和老龄人口服务组织如何运用太极拳社区计划减少老年人跌倒,并总结出,要想在人口水平上减少跌倒数量、促进老年人健康,就必须将太极拳干预转化为满足老年人需求、符合老年人能力的社区计划。这些计划应适合现有的社区结构,通过多种渠道散播,被各种组织广泛采纳和应用,并形成惯例以确保其持续性。

关键词：老年跌倒跌倒预防老年人太极太极拳

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用人工湿地处理乳制品厂废水的研究

环境科学 1996年第5期17卷 30-31页

作者：诸惠昌 D.k.stevens 上海环球环境工程有限公司 Utah State University UT 84322 USA

在进水COD浓度400 mg/L—800 mg/L,温度15℃-23℃时,人工湿地装置处理乳制品加工废水的COD去除率达97%—98%,面积负荷率达23.3 g/(m^2·d)—28.2 g/(m^2·d),BOD_5的去除率达97%—99%,BOD_5的面积负荷率为12.6 g/(m^2·d)—17.2 g/(m^2·d),几乎70%—90%COD和BOD_5去除率发生在进水沟段,如果没有pH冲击贡荷,处理装置的出水水质会稳定地保持在很高的水平。

关键词：人工湿地地下潜流乳制品厂废水处理

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Angola’s Awak.ning

ChinAfrica 2011年第7期3卷 30-32页

作者： Simon Freemantle Jeremy stevens the Standard Bank

BRIC is dominant in Angola’s economic awak.ning,with China a special and prominent partner Since the end of the civil war in 2002, Angola has moved from the fringe to the center of African economic ***,Angola accounts for 6 percent of Africa’s GDP,10 percent of its trade and 5 percent of continental-wide investment flows. Importantly,Angola’s economic awak.ning has occurred in tandem with the resurgence of BRIC(Brazil,Russia,India and China) commercial interest in *** such,Angola is,

关键词： Angola’s Awak.ning CITIC