检索结果-南通市图书馆

A prospective cohort of men with localized prostate cancer on active surveillance protocol in Hong Kong,China:what did we learn?

引用

Asian Journal of Andrology 2024年第3期26卷 245-249页

作者： Xiaobo Wu Ivan Ching-Ho Ko Cindy Yeuk-Lam Hong Samuel Chi-Hang Yee Jeremy Yuen-Chun Teoh samson yun-sang chan Ho-Man Tam Chi-Kwok chan Chi-Fai Ng Peter Ka-Fung Chiu SH Ho Urology Centre Department of SurgeryFaculty of MedicineThe Chinese University of Hong KongHong KongChina

This study aimed to report the outcomes of active surveillance(AS)in the management of low-risk prostate cancer(PCa).It recruited87 men who were prospectively followed up according to the Prostate Cancer Research International Active Surveillance(PRIAS)protocol with local adaptation at SH Ho Urology Centre,Prince of Wales Hospital,Hong Kong,*** investigated the predictorsof disease progression and found that baseline prostate-specific antigen density(PSAD)and the presence of the highest ProstateImaging-Reporting and Data System(PI-RADS)score 5 lesion on magnetic resonance imaging(MRI)are significantly correlatedwith disease ***,men with PSAD>0.2 ng ml^(−2)or PI-RADS 4 or 5 lesions had significantly worse upgradingfree survival compared to those with PSAD≤0.2 ng ml−2 and PI-RADS 2 or 3 *** study concludes that AS is a safe andeffective management strategy for selected patients to defer radical treatment and that most disease progression can be detectedafter the first repeated *** combination of PSAD>0.2 ng ml^(−2)and PI-RADS 4 or 5 lesions may serve as a useful predictorof early disease progression and provide a guide to optimize follow-up protocols for men in different risk groups.

关键词： active surveillance cohort localized prostate cancer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

LLC Resonant Converter Topologies and Industrial Applications-A Review

引用

Chinese Journal of Electrical Engineering 2020年第3期6卷 73-84页

作者： Junming Zeng Guidong Zhang samson Shenglong Yu Bo Zhang yun Zhang School of Automation Guangdong University of TechnologyGuangzhou 510600China School of Engineering Deakin UniversityVictoria 3216Australia School of Electric Power South China University of TechnologyGuangzhou 510640China

Owing to the advantages of high efficiency,high energy density,electrical isolation,low electromagnetic interference(EMI)and harmonic pollution,magnetic integration,wide output ranges,low voltage stress,and high operation frequency,the LLC resonant converters are widely used in various sectors of the electronics-based *** history and development of the LLC resonant converters are presented,their advantages are analyzed,three of the most popular LLC resonant converter topologies with detailed assessments of their strengths and drawbacks are ***,an important piece of research on the industrial applications of the LLC resonant converters is conducted,mainly including electric vehicle(EV)charging,photovoltaic systems,and light emitting diode(LED)lighting drivers and liquid crystal display(LCD)TV power ***,the future evolution of the LLC resonant converter technology is discussed.

关键词： Electrical isolation high energy density LLC resonant converter zero-current switching(ZCS)turn-off zero-voltage switching(ZVS)turn-on

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Review of Isolated Bidirectional DC-DC Converters for Data Centers

引用

Chinese Journal of Electrical Engineering 2023年第4期9卷 1-22页

作者： Shuohang Chen Guidong Zhang samson S.Yu Yi Mei yun Zhang School of Automation Guangdong University of TechnologyGuangzhou 510600China School of Engineering Deakin UniversityMelbourne 3125Australia Global Data Services Holdings Ltd. Guangzhou 510600China

In today’s fast-paced,information-driven world,data centers can offer high-speed,intricate capabilities on a larger scale owing to the ever-growing demand for networks and information *** data centers process and transmit information,stability and reliability are *** center power supply architectures rely heavily on isolated bidirectional DC-DC converters to ensure safety and *** the smooth operation of a data center,the power supply must be reliable and *** this study,we summarize the basic principle,topology,switch conversion strategy,and control technology of the existing isolated bidirectional DC-DC ***,existing research results and problems with isolated bidirectional DC-DC converters are ***,future trends in the development of isolated bidirectional DC-DC converters for data centers are presented,which offer valuable insights for solving engineering obstacles and future research directions in the field.

关键词： Data centers isolated bidirectional DC-DC converters power electronics topology control strategy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

蝉花菌丝体粉胶囊的质量标准研究

引用

中成药 2009年第9期31卷 1379-1382页

作者：周靖张乐乐邵燕孔德云上海医药工业研究院中药研究室上海200040

目的:制定蝉花菌丝体粉胶囊的质量标准。方法:采用TLC法对蝉花菌丝体粉胶囊中的氨基酸、腺嘌呤、腺苷和尿苷进行定性鉴别;采用HPLC法对腺苷进行了含量测定,色谱条件:采用Inertsil C18(4.6 mm×250 mm,5μm)色谱柱,流动相为甲醇-0.05 mo... 详细信息

目的:制定蝉花菌丝体粉胶囊的质量标准。方法:采用TLC法对蝉花菌丝体粉胶囊中的氨基酸、腺嘌呤、腺苷和尿苷进行定性鉴别;采用HPLC法对腺苷进行了含量测定,色谱条件:采用Inertsil C18(4.6 mm×250 mm,5μm)色谱柱,流动相为甲醇-0.05 mol/L磷酸二氢钾水溶液(15∶85),流速:1.0 mL/min,于260 nm处用外标法检测。结果:腺苷在0.007 475～2.99μg范围内线性关系良好,r=0.999 9,平均回收率为99.60%,RSD为0.62%。结论:建立的方法简便,准确,重复性好,能有效控制蝉花菌丝体粉胶囊的质量。

关键词：蝉花菌丝体粉胶囊薄层鉴别腺苷含量测定

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

淡紫拟青霉的固定化研究

引用

武夷科学 2011年第1期27卷 100-103页

作者：史怀肖马云刘波福建省农业科学院农业生物资源研究所福建福州350003

对淡紫拟青霉的固定化方法进行了研究。结果表明,用海藻酸钠包埋淡紫拟青霉的成球性能好,成球强度高。淡紫拟青霉固定化的最佳条件为:淡紫拟青霉含量25%、海藻酸钠含量4%、CaCl2含量12%、包埋时间2 h。淡紫拟青霉在固定化小球中能够很... 详细信息

对淡紫拟青霉的固定化方法进行了研究。结果表明,用海藻酸钠包埋淡紫拟青霉的成球性能好,成球强度高。淡紫拟青霉固定化的最佳条件为:淡紫拟青霉含量25%、海藻酸钠含量4%、CaCl2含量12%、包埋时间2 h。淡紫拟青霉在固定化小球中能够很好地存活,保存30 d时,活菌数从最初的2.63×107 cfu.g-1增加至22×107 cfu.g-1,保存60 d时活菌数为5.5×107 cfu.g-1。

关键词：淡紫拟青霉固定化包埋

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：