检索结果-南通市图书馆

Does laser surface texturing really have a negative impact on the fatigue lifetime of mechanical components?

Friction 2021年第6期9卷 1766-1775页

作者： Chia-Jui HSU Andreas STRATMANN simon medina Georg JACOBS Frank MÜCKLICH Carsten GACHOT Institute for Engineering Design and Product Development TU WienLehárgasse 6Campus GetreidemarktVienna 1060Austria Chair of Functional Materials Saarland UniversityCampus D3.3Saarbrücken 66123Germany AC2T Research GmbH Viktor-Kaplan-Straße 2/CWiener Neustadt 2700Austria Institute for Machine Elements and Systems Engineering RWTH AachenSchinkelstraße 10Aachen 52062Germany

Laser surface texturing(LST)has been proven to improve the tribological performance of machine *** micro-scale patterns manufactured by LST may act as lubricant reservoirs,thus supplying oil when encountering insufficient ***,not many studies have investigated the use of LST in the boundary lubrication regime,likely due to concerns of higher contact stresses that can occur with the increasing surface *** study aims to examine the influence of LST on the fatigue lifetime of thrust rolling bearings under boundary lubrication.A series of periodic patterns were produced on the thrust rolling bearings,using two geometrically different designs,namely cross and dimple *** oil ISO VG 100 mixed with 0.05 wt%P of zinc dialkyldithiophosphate(ZDDP)was *** bearings with cross patterns reduce the wear loss by two orders of *** patterns not only retain lubricant in the textured pockets but also enhance the formation of an anti-wear *** tribofilm generation may be improved by the higher contact stresses that occur when using the textured ***,in contrast to the negative concerns,the ball bearings with cross patterns were instead found to increase the fatigue life by a factor of three.

关键词： thrust rolling bearing laser surface texturing direct laser interference patterning zinc dialkyldithiophosphate(ZDDP) tribofilm

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

Surgical management of hepato-pancreatic metastasis from renal cell carcinoma

引用

World Journal of Gastrointestinal Oncology 2017年第2期9卷 70-77页

作者： Nikolaos A Chatzizacharias Anais Rosich-medina Khaled Dajani simon Harper Emmanuel Huguet Siong S Liau Raaj K Praseedom Asif Jah Department of HPB and Transplant Surgery Addenbrooke’s HospitalCambridge University Hospitals NHS Foundation TrustCambridgeshire CB2 0QQUnited Kingdom

AIM To investigate the outcomes of liver and pancreatic resections for renal cell carcinoma(RCC) metastatic disease. METHODS This is a retrospective, single centre review of liver and/or pancreatic resections for RCC metastases between January 2003 and December 2015. Descriptive statistical analysis and survival analysis using the Kaplan-Meier estimation were *** Thirteen patients h ad 7 pancreatic and 7 liver resections, with median follow-up 33 mo(range: 3-98). Postoperative complications were recorded in 5 cases, with no postoperative mortality. Three patients after hepatic and 5 after pancreatic resection developed recurrent disease. Median overall survival was 94 mo(range: 23-94) after liver and 98 mo(range: 3-98) after pancreatic resection. Disease-free survival was 10 mo(range 3-55) after liver and 28 mo(range 3-53) after pancreatic resection. CONCLUSION Our study shows that despite the high incidence of recurrence, long term survival can be achieved with resection of hepatic and pancreatic RCC metastases in selected cases and should be considered as a management option in patients with oligometastatic disease.

关键词： Renal cell carcinoma Metastasis Pancreas Liver Surgery

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

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

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

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：