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An update on transurethral surgery for benign prostatic obstruction

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Asian Journal of Urology 2017年第3期4卷 195-198页

作者： Jonathan Shunming Teo Yee Mun lee Henry Sun Sien Ho Department of Urology Singapore General HospitalSingapore Department of Urology Tan Tock Seng HospitalSingapore

Clinical benign prostatic hyperplasia(BPH)is one of the most common cause of lower urinary tract symptoms and transurethral resection of prostate(TURP)has been the gold standard technique for surgical treatment of benign prostate obstruction(BPO)over the last 2 *** monopolar TURP is considered a safe and effective option for surgical management of BPO,there are some disadvantages,namely bleeding,transurethral resection syndrome,incompleteness of *** review aims to highlight these problems,and describe the advances in technology and techniques that have evolved to minimise such *** the advent of lasers and bipolar technology,as well as enucleative techniques to remove the prostatic adenoma/adenomata,the problems of bleeding,transurethral resection syndrome and incomplete treatment are significantly *** TURPwill likely be replaced by such technology and techniques in the near future such that transurethral surgery of the prostate remain a safe and effective option in alleviating the harmful effects of BPO.

关键词： Transurethral resection of prostate Benign prostatic obstruction Bleeding Prostatectomy

An exploratory study of food safety and food handling: Examining ready-to-eat foods in independent delicatessen operations

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Advances in Bioscience and Biotechnology 2013年第3期4卷 430-436页

作者： Douglas Murray Charles Feldman lee lee Casey Schuckers Department of Biology and Molecular Biology Montclair State University Montclair USA Department of Health and Nutrition Sciences Montclair State University Montclair USA

The US Center for Disease Control and Prevention (CDC, 2009) reports that each year 76 million cases of foodborne illness occur with over 300,000 people hospitalized and 5000 deaths. This study, phase I of a continuing study, identifies key areas for food safety improvement. This study is designed as an exploratory evaluation of independently owned and operated delicatessen operations, using Escherichia coli and Staphylococcus aureus as indicators to assess food handling and the public’s risk for pathogenic contamination from commonly served ready-to-eat/take-away foods. The analysis consisted of a comprehensive strategy of laboratory testing of samples for pathogenic contamination, informal field observation of food handling procedures, and the examination of the most recent health inspection reports for each of the 18 operations visited. The deli turkey, cream cheese and lettuce were tested using bacteria indicator plates. The results showed widespread levels of contamination. Of the 54 samples tested for Escherichia coli, 26 showed positive results which are ~45% for E. coli contamination. Of the 54 samples tested for Staphy-lococcus aureus, 31 showed positive results which are ~57% for S. aureus contamination. One issue discovered while conducting the study was the lack of consistent uniform international standards of contamination tolerance levels. The informal field observations and health report analyses revealed widespread temperature violations and numerous instances of poor food handling. The study offers independent practitioners a strategy designed to improve their health inspections scores, food handling, and mitigation of operator liability. Independent operators traditionally do not enjoy the resources of centralized supervision and expert on-staff training;yet in aggregate they account for significant volume in both dollars and the quantity of product served. This study adds needed scrutiny to this important food niche.

关键词： Food Safety Food Handling E. coli S. aureus Public Health Ready-To-Eat Foods

Improving toughness of medium-Mn steels after friction stir welding through grain morphology tuning

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Journal of Materials Science & Technology 2022年第23期118卷 243-254页

作者： Mun Sik Jeong Tak Min Park Dong-Il Kim Hidetoshi Fujii Hye Ji Im Pyuck-Pa Choi Seung-Joon lee Jeongho Han Division of Materials Science and Engineering Hanyang UniversitySeoul 04763Republic of Korea Department of Advanced Materials Engineering Korea Polytechnic UniversitySiheung 15073Republic of Korea Joining and Welding Research Institute Osaka UniversityOsaka 567-0047Japan Department of Materials Science and Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Department of Materials Science and Engineering Northwestern UniversityEvanstonIL 60208USA

This work demonstrated the viability of friction stir welding for the welding of medium-Mn steels when used as cryogenic vessel materials for liquefied gas *** used an intercritically annealed Fe-7 Mn-0.2 C-3 Al(wt.%)steel with a dual-phase(α'martensite andγ_(R) retained austenite)nanolaminate structure as a base material and systematically compared its microstructure and impact toughness after friction stir and tungsten inert gas *** friction stir welded specimen exhibited a large amount ofγ_(R) phase owing to a relatively low temperature during welding,whereas the tungsten inert gas welded specimen comprised only theα'***,the friction stir welded steel exhibited a tuned morphology of nanoscale globular microstructure at the weld zone and did not exhibit any prior austenite grain boundary due to active recrystallization caused by deformation during *** preserved fraction ofγ_(R) and morphological tuning in the weldment improved the impact toughness of the friction stir welded steel at low *** the steel processed by tungsten inert gas welding,the notch crack propagated rapidly along the prior austenite grain boundaries-weakened by Mn and P segregations-resulting in poor impact ***,the friction stir welded steel exhibited a higher resistance against notch crack propagation due to the slow crack propagation along the ultrafine ferrite/ferrite(α/α)interfaces,damage tolerance by the active transformation-induced plasticity from the large amount ofγR,and enhanced boundary cohesion by suppressed Mn and P segregations.

关键词： Charpy impact test Transformation-induced plasticity Friction stir welding Phase stability Medium-Mn steel

RIVER DEEP,MOUNTAIN HIGH Yangshuo's serene natural sites

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城市漫步（GBA版） 2014年第9期 24-25页

作者： TOM lee 不详

Take a look at the back of any RMB20 note and yoifll see an enchanting nature *** the foreground,a man wearing a rice paddy hat is punting down a river on a bamboo *** him,a majestic range of karst mountains rise out ... 详细信息

关键词： paddy karst mountains

China’s Festive Goods are Popular Around the World

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China's Foreign Trade 2024年第6期 39-40页

作者： Joyce lee 不详

Nowadays,the connection between culture and commerce has become increasingly *** a manufacturing powerhouse,China has ridden the fast train of cultural exchange,allowing the festive goods industry to grow rapidly.

关键词： Popular stive culture

Conceptualizing Mining of Firm's Web Log Files

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Journal of Systems Science and Information 2017年第6期8卷 489-510页

作者： Ruangsak TRAKUNPHUTTHIRAK Yen CHEUNG Vincent C.S.lee Faculty of IT Clayton CampusMonash University25 Exhibition WalkClaytonAustralia

In this era of a data-driven society, useful data(Big Data) is often unintentionally ignored due to lack of convenient tools and expensive software. For example, web log files can be used to identify explicit information of browsing patterns when users access web sites. Some hidden information,however, cannot be directly derived from the log files. We may need external resources to discover more knowledge from browsing patterns. The purpose of this study is to investigate the application of web usage mining based on web log files. The outcome of this study sets further directions of this investigation on what and how implicit information embedded in log files can be efficiently and effectively extracted. Further work involves combining the use of social media data to improve business decision quality.

关键词： web usage mining web log files Big Data machine learning business intelligence

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双光子过程中的跃迁截面

光学学报 1998年第8期18卷 1056-1063页

作者：林福成 Jonghoon Yi Yongjoo Rhee Jongmin lee 中国科学院上海光学精密机械研究所韩国原子能研究所量子光学实验室

重新检验了双光子过程中跃迁截面的概念：当密度矩阵中对角元随时间的变化缓慢时，速率方程和相关的跃迁截面是很好的近似。导出速率系数的表达式：在强光场中描述单光子过程中的系数要作很大的修改，而描述双光子过程的系数可从单光子... 详细信息

重新检验了双光子过程中跃迁截面的概念：当密度矩阵中对角元随时间的变化缓慢时，速率方程和相关的跃迁截面是很好的近似。导出速率系数的表达式：在强光场中描述单光子过程中的系数要作很大的修改，而描述双光子过程的系数可从单光子过程的系数导出。激光场的功率分配的最佳化随总功率的强度而激烈变化。当有多个能级或多个激光模式的干涉效应时，利用跃迁截面的计算比直接利用布洛赫方程的计算还要复杂。

关键词：双光子过程速率方程布洛赫方程

Visible light induced catalytic properties of CdSe-graphene nanocomposites and study of its bactericidal effect

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Chinese Chemical Letters 2014年第6期25卷 941-946页

作者： Kefayat Ullah Young-Hee Kim Byung-Eui lee Sun-Bok Jo Lei Zhu Shu Ye Won-Chun Oh Department of Advanced Materials Science﹠Engineering Hanseo University Department of Immunology College of MedicineSoonchunhyang UniversityCheonan 330-721Republic of Korea Department of Chemistry Soonchunhyang UniversityAsanChungnam 336-745Republic of Korea

A novel composite, CdSe-graphene, was synthesized using facile hydrothermal method. The structural characteristics studies of the synthesized composites were investigated by X-ray diffraction （XRD）, scanning electron microscope （SEM）, transmission electron microscope （TEM）, Brunauer, Emmett, Teller specific surface area （BET） and X-ray photoelectron spectroscopy （XPS）. The photocatalytic activity was investigated by the degradation of methylene blue as standard dye. The degradation of M8 was calculated based on the decrease in concentration of the dye with respect to regular time intervals. The reusability tests were done to investigate the stability of the used catalysts. Additionally the antibacterial activity of CdSe-graphene was also investigated using bacterium Streptococcus aureus （S. aureus）.

关键词： Semiconductors Hydrothermal method Antimicrobial Photocatalysis

FROM APARTHEID TO FREEDOM Traveling through time with Ladysmith Btack Mambazo

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城市漫步（GBA版） 2015年第8期 28-29页

作者： TOM lee 不详

There are many roads to worldwide renown,but few of tliem involve being discovered by a 60s musical icon and championed by a Nobel Prize winner That,in a nutshell,is the story of Ladysmith Black Mambazo,an a cappella vo・cal group whose roots lie in the farmlands of South *** that summary only scratches the surface of an astonishing tale that has its beginnings in the apartheid era,when the SA govern-ment ferociously pursued a policy of keeping whites and blacks separate.

关键词： farmland policy smith