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准分子激光加工工艺参数与修饰表面形貌参数的关系

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润滑与密封 2006年第5期31卷 47-49页

作者：李小兵刘莹南昌大学机电工程学院江西南昌330029

表面微观形貌修饰是改善和控制表面微摩擦性能的一种方法。采用准分子激光表面形貌修饰技术在A l2O3陶瓷材料表面构建微观形貌,通过改变准分子激光加工工艺参数,探讨了准分子激光加工表面形貌参数(包括粗糙度参数和分形参数)与加工工艺... 详细信息

表面微观形貌修饰是改善和控制表面微摩擦性能的一种方法。采用准分子激光表面形貌修饰技术在A l2O3陶瓷材料表面构建微观形貌,通过改变准分子激光加工工艺参数,探讨了准分子激光加工表面形貌参数(包括粗糙度参数和分形参数)与加工工艺参数的相关关系。研究表明:准分子加工工艺参数与表面形貌参数之间存在相关性,轮廓高度算术平均值、轮廓高度均方根值、坡度均方根值和分形维数与激光能量密度成正比,承载量系数与激光能量密度成反比;随着激光能量密度的增大,表面形貌的起伏程度和致密程度增大、陡峭程度有细微的变化、承载面积比减小。

关键词：准分子激光加工工艺参数表面形貌参数 Al2O3陶瓷

不同材料的准分子激光修饰表面形貌的分形表征

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润滑与密封 2005年第6期30卷 49-51,54页

作者：李小兵刘莹南昌大学机电工程学院南昌330029

采用准分子激光加工方法,在相同的工艺参数下加工了脆性材料(A l2O3陶瓷)和塑性材料(不锈钢、Q235钢)试件。采用分形理论研究了准分子激光加工的不同材料表面的分形特征,通过结构函数法计算了表面微观形貌的分形维数。结果表明:准分子... 详细信息

采用准分子激光加工方法,在相同的工艺参数下加工了脆性材料(A l2O3陶瓷)和塑性材料(不锈钢、Q235钢)试件。采用分形理论研究了准分子激光加工的不同材料表面的分形特征,通过结构函数法计算了表面微观形貌的分形维数。结果表明:准分子激光加工的不同材料的表面形貌具有不同的分形特性,在相同的加工条件下A l2O3陶瓷材料表面的分形维数大于不锈钢、Q235钢等塑性材料表面的分形维数,表明脆性材料和塑性材料具有不同的准分子激光加工属性;准分子激光加工表面的分形维数随着激光扫描速度的增大而减小,随放大器电压和脉冲频率的增大而增大,表明可以通过改变加工参数得到不同的分形维数表面。

关键词：准分子激光加工工艺参数表面形貌分形表征

PPA@UiO-66破乳剂的制备及在油-水分离中的应用

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中国矿业大学学报 2023年第5期52卷 990-1001页

作者：吴勉梁星李小兵中国矿业大学化工学院江苏徐州221116 中国矿业大学国家煤加工与洁净化工程技术研究中心江苏徐州221116

针对含油废水中微细粒级油滴难分离,以金属有机框架UiO-66、聚醚聚季铵盐(PPA)为原料制备了一种新型的UiO-66负载的聚醚聚季铵盐(PPA@UiO-66)破乳剂.采用傅里叶变换红外光谱、扫描电镜、热重分析等手段探究了破乳剂的微观性质.考察了吸... 详细信息

针对含油废水中微细粒级油滴难分离,以金属有机框架UiO-66、聚醚聚季铵盐(PPA)为原料制备了一种新型的UiO-66负载的聚醚聚季铵盐(PPA@UiO-66)破乳剂.采用傅里叶变换红外光谱、扫描电镜、热重分析等手段探究了破乳剂的微观性质.考察了吸附剂投加量、处理时间及处理温度等因素对油滴去除率的影响.建立吸附动力学和等温吸附模型对吸附过程进行了分析.结果表明:当吸附剂投加量为0.4 g/L,处理温度和处理时间分别为60℃和50 min时,除油率可达87.33%.吸附过程符合准一级动力学模型和Langmuir等温吸附模型,吸附容量可达589 mg/g.破乳脱稳后,经旋流-静态微泡浮选柱进一步分离,除油率高达95.65%.

关键词：破乳剂油-水分离 UiO-66 吸附浮选柱

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政府信息公开法的制定对电子文件利用的影响

北京档案 2006年第10期 27-29,36页

作者：李小冰广西财经学院

政府信息是指各级人民政府及其职能部门以及依法行使职权的组织在其管理或提供公共服务过程中制作、获得或拥有的信息.政府信息公开是对法治政府的一个要求,世界上法治国家的政府都重视政府信息公开,目前我国也正着手制定政府信息公开法.

关键词：政府信息公开法《上海市政府信息公开规定》文件利用电子依法行使职权服务过程职能部门人民政府

Developing land use scenario dynamics model by the integration of system dynamics model and cellular automata model

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Science China Earth Sciences 2005年第11期48卷 1979-1989页

作者： HE Chunyang, SHI Peijun, CHEN Jin, li xiaobing, PAN Yaozhong, li Jing, li Yuechen & li Jinggang Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University College of Resources Science & Technology, Beijing Normal University, Beijing 100875, China Key Laboratory of Environmental Change and Natural Disaster Ministry of Education of China Beijing Normal University China College of Resources Science & Technology Beijing Normal University Beijing China

Modeling land use scenario changes and its potential impacts on the structure and function of the ecosystem in the typical regions are helpful to understanding the interactive mechanism between land use system and ecological system. A Land Use Scenario Dynamics (LUSD) model by the integration of System Dynamics (SD) model and Cellular Automata (CA) model is developed with land use scenario changes in northern China in the next 20 years simulated in this paper. The basic idea of LUSD model is to simulate the land use scenario de-mands by using SD model at first, then allocate the land use scenario patterns at the local scale with the considerations of land use suitability, inheritance ability and neighborhood effect by using CA model to satisfy the balance between land use scenario demands and supply. The application of LUSD model in northern China suggests that the model has the ability to reflect the complex behavior of land use system at different scales to some extent and is a useful tool for assessing the potential impacts of land use system on ecological system. In addition, the simulated results also indicate that obvious land use changes will take place in the farming-pastoral zone of northern China in the next 20 years with cultivated land and urban land being the most active land use types.

关键词： system dynamics, cellular automata, scenario, land use, model

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资本主义文化矛盾与哲学非理性主义

中共中央党校学报 2010年第6期14卷 94-97页

作者：李小兵中共中央党校哲学教研部北京海淀100091

当代资本主义的文化矛盾导致日益一体化的社会政治经济系统与日益萎缩的个人生活世界的分裂,显露经济成就和科技文明的现实世界与人类生存面临困境的价值世界的分裂。资本主义文化危机的基础是资本主义基本矛盾引发的生产劳动危机。非... 详细信息

当代资本主义的文化矛盾导致日益一体化的社会政治经济系统与日益萎缩的个人生活世界的分裂,显露经济成就和科技文明的现实世界与人类生存面临困境的价值世界的分裂。资本主义文化危机的基础是资本主义基本矛盾引发的生产劳动危机。非理性主义思潮是当代资本主义文化矛盾的理论核心。存在主义是其中的主要哲学流派。它批判资本主义社会,却反对客观实在、科学思维方式、历史发展的客观规律,对人类前途持总体悲观的态度。

关键词：资本主义文化矛盾非理性主义存在主义西方哲学

Mechanisms of resistance to trastuzumab in HER2-positive gastric cancer

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Chinese Journal of Cancer Research 2024年第3期36卷 306-321页

作者： Zhifei li Huan Zhao Huihui Hu Haili Shang Yongjing Ren Wenhui Qiu Hao Su Huifang Lyu xiaobing Chen Department of Oncology the Affiliated Cancer Hospital of Zhengzhou University&Henan Cancer HospitalHenan Engineering Research Center of Precision Therapy of Gastrointestinal CancerZhengzhou Key Laboratory for Precision Therapy of Gastrointestinal CancerZhengzhou 450008China Henan University of Traditional Chinese Medicine Zhengzhou 450046China State Key Laboratory of Esophageal Cancer Prevention&Treatment Key Laboratory of Advanced Drug Preparation TechnologiesMinistry of EducationSchool of Pharmaceutical SciencesZhengzhou UniversityZhengzhou 450001China The First Affiliated Hospital of Xinxiang Medical University Xinxiang 453000China Department of Oncology the Affiliated Cancer Hospital of Zhengzhou University&Henan Cancer HospitalZhengzhou 450008China

Gastric cancer is one of the most prevalent cancers worldwide,and human epidermal growth factor receptor 2(HER2)-positive cases account for approximately 20%of the total ***,trastuzumab+chemotherapy is the recommended first-line treatment for patients with HER2-positive advanced gastric cancer,and the combination has exhibited definite efficacy in HER2-targeted ***,the emergence of drug resistance during treatment considerably reduces its effectiveness;thus,it is imperative to investigate the potential mechanisms underlying *** the present review article,we comprehensively introduce multiple mechanisms underlying resistance to trastuzumab in HER2-positive gastric cancer cases,aiming to provide insights for rectifying issues associated with resistance to trastuzumab and devising subsequent treatment strategies.

关键词： HER2 gastric cancer trastuzumab drug resistance

MoS_(2) nanoflowers and PEDOT:PSS nanocomposite enabling wearable dual-mode pressure sensors

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Science China(Technological Sciences) 2024年第6期67卷 1737-1747页

作者： WANG FengMing YANG WeiJia MA Ke SHEN GengZhe SU DaoJian li BaiJun WANG ShuangPeng QIN BoLong ZHANG Chi XIN Yue CAO xiaobing HE Xin School of Applied Physics and Materials Wuyi UniversityJiangmen529020China Biomaterials R&D Center Zhuhai Institute of Advanced TechnologyChinese Academy of SciencesZhuhai519003China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao999078China

A versatile sensing platform employing inorganic MoS_(2) nanoflowers and organic poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)has been investigated to develop the resistive and capacitive force-sensitive *** microstructure of the sensing layer heightens the sensitivity and response time of the dual-mode pressure sensors by augmenting electron pathways and inner stress in response to mechanical ***,the capacitive and resistive sensors exhibit sensitivities of 0.37 and 0.12 kPa^(-1),respectively,while demonstrating a remarkable response time of approximately 100 ***,it is noteworthy that the PEDOT:PSS layer exhibits excellent adhesion to polydimethylsiloxane(PDMS)substrates,which contributes to the development of highly robust force-sensitive sensors capable of enduring more than 10000loading/unloading *** combination of MoS_(2)/PEDOT:PSS layers in these dual-mode sensors has shown promising results in detecting human joint movements and subtle physiological ***,the sensors have achieved a remarkable precision rate of 98%in identifying target *** outcomes underscore the significant potential of these sensors for integration into applications such as electronic skin and human-machine interaction.

关键词： MoS_(2)/PEDOT:PSS nanocomposite force-sensitive sensor multi-scaled microstructure physiological signals monitoring object grasping recognition

Atom substitution of the solid-state electrolyte li_(10)GeP_(2)S_(12)for stabilized all-solid-state lithium metal batteries

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Journal of Energy Chemistry 2024年第1期88卷 28-38,I0002页

作者： Zijing Wan Xiaozhen Chen Ziqi Zhou Xiaoliang Zhong xiaobing Luo Dongwei Xu State Key Laboratory of Coal Combustion School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina

Solid-state electrolyte li_(10)GeP_(2)S_(12)(LGPS)has a high lithium ion conductivity of 12 mS cm^(-1)at room temperature,but its inferior chemical stability against lithium metal anode impedes its practical *** all solutions,Ge atom substitution of the solid-state electrolyte LGPS stands out as the most promising solution to this interface problem.A systematic screening framework for Ge atom substitution including ionic conductivity,thermodynamic stability,electronic and mechanical properties is utilized to solve *** fast screening,an enhanced model Dop Net FC using chemical formulas for the dataset is adopted to predict ionic ***,li_(10)SrP_(2)S_(12)(LSrPS)is screened out,which has high lithium ion conductivity(12.58 mS cm^(-1)).In addition,an enhanced migration of lithium ion across the LSr PS/li interface is ***,compared to the LGPS/li interface,LSrPS/li interface exhibits a larger Schottky barrier(0.134 eV),smaller electron transfer region(3.103?),and enhanced ability to block additional electrons,all of which contribute to the stabilized *** applied theoretical atom substitution screening framework with the aid of machine learning can be extended to rapid determination of modified specific material schemes.

关键词： Atom substitution Solid-state electrolyte Machine learning Stabilized interface