检索结果-南通市图书馆

Tribological evaluation of thermoplastic polyurethane-based bearing materials under water lubrication:Effect of load,sliding speed,and temperature

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Friction 2024年第8期12卷 1801-1815页

作者： shaoli jiang Janet SSWONG Debashis PUHAN Tian YUAN Xiuqin BAI Chengqing YUAN State Key Laboratory of Maritime Technology and Safety Wuhan University of TechnologyWuhan 430063China Department of Mechanical Engineering Imperial College LondonLondon SW72AZUK Yusuf Hamied Department of Chemistry University of CambridgeLensfield RoadCambridge CB21EWUK

Polymers are widely used in bearing *** the case of water-lubricated stern tube bearings,thermoplastic polyurethane(TPU)-based composites are used due to their excellent wear resistance,corrosion resistance,and tunable mechanical *** tribological performance,however,depends on operating *** this work,TPU was blended with carbon fiber,graphene platelet,and ultra-high molecular weight polyethylene(UHMWPE).Friction tests of TPU based-composites against copper countersurface were carried out in water to mimic the actual operating conditions of the *** of the resulting contacts were in the boundary lubrication regime,in which friction was attributed to both contact mechanics of asperities as well as water *** results show that the viscoelasticity of TPU has a considerable impact on its tribological *** lubrication at 50°C promotes the softening of polymer surface material during sliding,resulting in higher fluctuation in the coefficient of friction and wear *** is attributed to the reduced thermomechanical *** addition,Schallamach waviness is observed on worn *** tribological properties of TPU are significantly improved by the inclusion of carbon fiber,graphene platelet,and *** formation of graphene transfer-layers and UHMWPE transfer film reduces friction and wear loss,while the inclusion of carbon fiber enhances wear resistance due to improved mechanical properties and load bearing capacity.

关键词： friction thermoplastic polyurethane(TPU) water-lubricated bearings graphene platelet carbon fibers ultra-high molecular weight polyethylene(UHMWPE)

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Borehole stability in naturally fractured reservoirs luring production tests

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Petroleum Science 2008年第3期5卷 247-250页

作者： Zhang Fuxiang Zhang shaoli jiang Xuehai Lu Rende Chen Mian Tarim Oil Field Company PetroChina Korla Xinjiang 834000 China PetroChina Company Limited Beijing 100011 China School of Petrnleuln Engineering China University of Petroleum Beijing 102249 China

Based on the plane of weakness theory, a model for predicting borehole stability in fractured reservoirs under different stress states was estiblisted and the equations for solving borehole stability were developed. The minimum downhole pressures required to maintain borehole stability under different natural fracture occurrences were calculated by using the data from a well in the Tazhong （central Tarim） area, Tarim Basin, west China. Several conclusions were drawn for naturally fractured reservoirs with a dip angle from less than 10° to greater than 30°. Application in three wells in the Tazhong area indicates that this model is practically useful.

关键词： Production test fractured reservoir borehole stability fracture dip azimuth of fracture

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嘉惠后学的《书舶庸谭》——董康东洋访书记的文献学价值

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新世纪图书馆 2018年第4期 17-21页

作者：江少莉北京大学信息管理系

董康是我国近代著名的藏书家、刻书家。论文结合《书舶庸谭》一书,介绍了董康的藏书、刻书、访书生涯,重点评价了董康搜访、著录、影刊流传到日本的汉籍的贡献,指出《书舶庸谭》是研究民国时期中日书籍文化交流的珍贵资料。

关键词：董康《书舶庸谭》中日书籍文化交流

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在书城里做中国书文化的学问——从《沧桑书城》到《苍茫书城》

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新世纪图书馆 2005年第4期 67-69页

作者：江少莉南京大学信息管理系 2004级硕士研究生210093

徐雁先生梳理“中国藏书史”、呼吁“救救古旧书业”、呼唤“图书馆学优秀教育传统”的回归,体现了他书城中的“文化保守主义”观。

关键词：书城学问文化保守主义中国藏书史古旧书业教育传统图书馆学桑徐雁

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旧书文化与国学研究精神

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新世纪图书馆 2006年第1期 72-75页

作者：江少莉南京大学信息管理系 2004级硕士研究生210093

古旧书历来被认为是一个民族文化宝库中的重要知识资源,也是我国古典藏书楼和近现代图书馆所关注的珍品。 2005年6月28日下午,在南京饭店紫金楼会议室里,举办了南京大学信息管理系徐雁教授所著《中国旧书业百年》(科学出版社2005年5月版... 详细信息

古旧书历来被认为是一个民族文化宝库中的重要知识资源,也是我国古典藏书楼和近现代图书馆所关注的珍品。 2005年6月28日下午,在南京饭店紫金楼会议室里,举办了南京大学信息管理系徐雁教授所著《中国旧书业百年》(科学出版社2005年5月版)的首发座谈会。《中国旧书业百年》是三年前中共中央统战部“华夏英才基金”委员会经严格评审反复遴选以后,决定资助出版的党外专家学术著作。全书分为九个单元,问世后被业内评价为是“我国第一部系统探讨近现代中国古旧书业发展历史和经营业态的原创型学术专著”。《光明日报》书评称该书“为读者展示出百余年来中国旧书业的发展面貌,系统探讨了近现代中国古旧书业发展历史和经营业态,从而高水准地一举填补了中国书业史研究的长期学术空白。”当日,江苏省政协副主席冯健亲、统战部副部长李熙诚等到会祝贺,南京大学资深教授周勋初、卞孝萱、董健等在宁专家学者到场畅谈了“旧书文化与国学精神”这一重要话题,有关言论极具启发意义。

关键词：民族文化旧书业研究精神国学南京大学现代图书馆科学出版社书评信息管理系知识资源藏书楼徐雁《中国旧书业百年》

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“白看？不白看!”--白化文先生读书随笔《退士副墨》编后记

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新世纪图书馆 2017年第4期 16-17,36页

作者：江少莉江少莉北京大学北京100871

《退士副墨》的作者白化文先生曾任北京大学信息管理系教授,多年从事佛教、敦煌学、目录学等学科的研究工作,造诣颇深。论文简要回顾了白先生著书、做学问的经历,介绍了白先生的随笔集——《退士副墨》的主要内容和写作特点。

关键词：白化文读书随笔北京大学

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Systemic therapy in gastrointestinal stromal tumors

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Oncology and Translational Medicine 2024年第3期10卷 110-118页

作者： shaoli Li Hui Wang Xiaogang Wang Rui Bai Qunan Sun Sujing jiang Lifeng Sun Youping Wang Ying Dong Department of Medical Oncology the Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Cancer Institute Key Laboratory of Cancer Prevention and InterventionMinistry of Educationthe Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Cancer Center Zhejiang UniversityHangzhou 310009China Department of Pathology the Cancer Hospital of the University of Chinese Academy of Sciences(Zhejiang Cancer Hospital)Institute of Basic Medicine and Cancer(IBMC)Chinese Academy of SciencesHangzhou 310022China Department of Pathology the Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Department of Respiratory and Critical Care Medicine the Fourth Affiliated Hospital of Zhejiang University School of MedicineYiwuChina Colorectal Surgery and Oncology the Second Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China.

Gastrointestinal stromal tumors(GISTs)are the most common type of soft tissue sarcoma in the gastrointestinal *** GISTs have been attributed to activated gain-of-function mutations in either KIT or platelet-derived growth factor receptorα,making these molecular features essential targets for therapeutic *** surgery is the standard treatment for localized GISTs,patients often experience relapse and disease progression even after *** recent years,targeted therapy has significantly improved the prognosis of patients with advanced *** mesylate,a KIT inhibitor,is the first-line treatment for advanced GISTs and has revolutionized the treatment of this ***,drug resistance remains a major issue with imatinib treatment,as a significant majority of patients become resistant to imatinib either after initiation or after 2–3 years of ***,novel tyrosine kinase inhibitors such as sunitinib,regorafenib,ripretinib,and avapritinib have been introduced to address drug *** has emerged as a potential approach for the treatment of advanced *** review comprehensively summarizes the pathogenesis of GISTs and the development of targeted therapies and immunotherapies,provides an overview of the emergence of drug resistance in advanced GISTs,and discusses the challenges and prospects associated with the treatment of GISTs.

关键词： Gastrointestinal stromal tumors Pathogenesis Systemic therapy Drug resistance

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古都型历史文化名城价值认知研究——以西安为例

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西安建筑科技大学学报（自然科学版） 2024年第3期56卷 456-465页

作者：姜岩杨斯亮潘少立西安建筑科技大学建筑学院陕西西安710054 西安市城市规划设计研究院陕西西安710082

当前历史文化价值成为历史文化名城保护体系、历史文化名城申报认定的重要内容,合理认知价值是保护文化遗产、传承历史文脉的前提条件.古都型历史文化名城在我国中华文明发展进程中占据重要地位,是我国名城的重要类型之一.当前古都型历... 详细信息

当前历史文化价值成为历史文化名城保护体系、历史文化名城申报认定的重要内容,合理认知价值是保护文化遗产、传承历史文脉的前提条件.古都型历史文化名城在我国中华文明发展进程中占据重要地位,是我国名城的重要类型之一.当前古都型历史文化名城存在保护认识不足、保护传承与城市建设割裂等问题,其深层原因之一就是缺乏对价值的深入认知.本文在剖析古都型历史文化名城的内涵特征的基础上,基于历史城镇景观学、历史地理学和文化生态学理论,通过时间-空间-文化维度,揭示古都型历史文化名城时间动态性、空间关联性、文化系统性特征,从历史脉络发展、区域空间关联、文化功能建设方面构建内容体系并梳理价值载体,全面认知古都型历史文化名城的历史文化价值.

关键词：历史文化名城价值古都

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Can patients with mild non-neoplastic lesions diagnosed at baseline screening be safely exempt from surveillance: evidence from multicenter community-based cohorts

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Science China Life Sciences 2024年

作者： Siyi He Zhiyi Zhang Guohui Song Zhenhai Wang Chunyun Dai Shipeng Yan Kun jiang Bingbing Song He Li Maomao Cao Dianqin Sun Fan Yang Xinxin Yan shaoli Zhang Yi Teng Qianru Li Changfa Xia Wanqing Chen Office of Cancer Screening National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Department of Gastroenterology Gansu Wuwei Tumor Hospital Cixian Cancer Institute Linzhou Cancer Hospital Center for Disease Control and Prevention of Sheyang County Department of Cancer Prevention and Control Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine Central South University Luoshan Center for Disease Control and Prevention Office for Cancer Control and Research Affiliated Cancer Hospital of Harbin Medical University

Surveillance recommendations for gastric cancer(GC) in current guidelines focused on advanced precancerous lesions and were based on precise diagnosis of severity/extent of baseline lesions. We aimed to develop a less endoscopy-related equipment-dependent risk-stratification tool, and assessed whether mild-precursor-lesion patients can be safely exempt from surveillance. In the multicenter communitybased cohort, 75,051 participants receiving baseline endoscopy were enrolled during 2015–2017 and followed-up until 2021. Cumulative incidence rates(CIRs) of GC for precancerous-conditions were calculated by Kaplan-Meier method and compared by Log-rank tests. Mixedeffects Cox regression models were used to detect potential factors for progression towards GC. A risk score was calculated as counts of selected factors. An independent cohort, including 26,586 participants was used for external validation. During a median follow-up of6.25 years, CIRs of GC were 0.302%, 0.436%, and 4.756% for normal group, non-neoplastic(atrophic gastritis/intestinal metaplasia) and neoplastic lesions(low-grade/high-grade dysplasia), respectively(Ptrend<0.001). Four predictors, including male, ≥60 years, smoking, and limited vegetable consumption, were selected for risk-stratification. High-risk patients(≥3 risk factors) with non-neoplastic lesions showed higher GC risks(adjusted HR=7.73, 95%CI: 4.29–13.92), and their four-year CIR reached the one-year CIR of neoplastic lesions. Further categorizing non-neoplastic lesions by histological grade, both patients with moderate-to-severe lesions(aHR=3.07, 95%CI: 1.67–5.64) and high-risk patients with mild lesions(aHR=7.29, 95%CI: 3.58–14.86) showed higher risks. Consistent trends were observed in validation cohort. High-risk mild-precursor-lesion patients should receive surveillance within 3–5 years after baseline screening. Our study provides evidence on supplementing current guideline recommendations.

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添加剂对聚氨酯材料摩擦性能的影响

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润滑与密封 2019年第8期44卷 37-41,48页

作者：谢心郭智威蒋劭力袁成清武汉理工大学能源与动力工程学院湖北武汉430063 国家水运安全工程技术研究中心可靠性工程研究所湖北武汉430063

为改善聚氨酯水润滑轴承材料的性能,在聚氨酯预聚体中分别添加不同含量的润滑脂、消泡剂和合成蜡,制备3种聚氨酯复合材料;利用CBZ-1型船舶轴系摩擦磨损试验机测试复合材料在不同工况下的摩擦学性能,利用激光干涉位移表面轮廓仪和超景深... 详细信息

为改善聚氨酯水润滑轴承材料的性能,在聚氨酯预聚体中分别添加不同含量的润滑脂、消泡剂和合成蜡,制备3种聚氨酯复合材料;利用CBZ-1型船舶轴系摩擦磨损试验机测试复合材料在不同工况下的摩擦学性能,利用激光干涉位移表面轮廓仪和超景深显微镜观察不同聚氨酯复合材料对摩副的表面形貌,探讨材料在水润滑条件下的磨损机制。结果表明:润滑脂和消泡剂的添加提高了聚氨酯材料的稳定性,再添加合成蜡有效地改善其在高压工况下的润滑状态;在高压工况下,与纯聚氨酯材料对摩的铸铜盘磨损后出现犁沟现象,表现出磨粒磨损的特征并伴随着黏着磨损,而与复合聚氨酯材料对摩的铸铜盘磨损后仅出现黏着磨损的特征。润滑脂、消泡剂和合成蜡能有效提高聚氨酯材料的耐磨性以及降低对摩副的磨损损耗,从而提高了聚氨酯材料作为水润滑轴承的安全性和可靠性。

关键词：聚氨酯水润滑表面形貌摩擦学性能

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