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Underground Space 2019年第4期4卷 340-347页

作者： Pei-Chen Wu Jian-Hua Yin wei-qiang feng Wen-Bo Chen Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina

Geosynthetics and deep cement mixed(DCM)soil columns have been widely used to improve soft soil grounds in many countries and *** paper presents an experimental study on a geosynthetic-reinforced sand fill over marine clay with or without DCM columns under different *** tests were conducted on the sand fill reinforced with fixed-end and free-end geosynthetics over marine clay under three-stage local loading to investigate the effects of the boundary conditions of geosynthetic reinforcement on reducing *** is observed that the fixed-end geosynthetic sheet is more effective in reducing settlements than the free-end condition under identical local *** test was conducted on the fixed-end geosynthetic-reinforced sand fill over the marine clay improved by DCM columns under single-stage uniform *** vertical stresses on the marine clay and on the DCM columns,as well as the tensile strains of the geosynthetic sheet in the overlying sand fill,were *** results revealed that the stress concentration ratio increases with an increase in consolidation settlements,and the maximum tensile strain of the geosynthetic sheet occurs near the edge rather than at the center of the top surface of the DCM columns.

关键词： Settlement Geosynthetic Reinforcement Deep cement mixed soil columns

立足两个课堂服务一个中心——货币银行学课程教学模式的探索与实践

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云南电大学报 2009年第2期11卷 83-87页

作者：强伟锋西安广播电视大学财经教学部陕西西安710002

课程设计是课程教学的关键环节,开放教育的教学环境和教学对象和普通高校有着不同特点,如何针对教学环境和教学对象各自特点,结合各课程的教学目标不断满足学生自主性学习的要求,是一个非常有研究价值的课题。货币银行学课程教学模式依... 详细信息

课程设计是课程教学的关键环节,开放教育的教学环境和教学对象和普通高校有着不同特点,如何针对教学环境和教学对象各自特点,结合各课程的教学目标不断满足学生自主性学习的要求,是一个非常有研究价值的课题。货币银行学课程教学模式依据对话理论的基本原理,结合不断提高学生的个性化、自主性学习的教学目标,立足"实时"和"非实时"两个课堂,把教学资源溶解其中,结合多种媒体的教学手段,实现师生之间的有效互动,促进教学活动有效展开。

关键词：教学模式货币银行探索

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紫外可见分光光度计高精度信号采集与处理

仪表技术与传感器 2012年第7期 16-17页

作者：马佳佳任芊强伟峰北京理工大学化工与环境学院北京100081 北京普析通用仪器有限责任公司模拟数字部北京101200

紫外可见分光光度计测量信号由于受噪声、偏置、温漂、背景光等干扰,测量精度受影响会降低。文中采用了以混合信号微处理器C8051F340单片机与24位AD转换器ADS1255为核心的双路数据采集系统,实时动态采集样品、参比与暗信号,经过相应数... 详细信息

紫外可见分光光度计测量信号由于受噪声、偏置、温漂、背景光等干扰,测量精度受影响会降低。文中采用了以混合信号微处理器C8051F340单片机与24位AD转换器ADS1255为核心的双路数据采集系统,实时动态采集样品、参比与暗信号,经过相应数据处理,可有效滤除干扰,提高分光光度计的测量精度、稳定性以及重复性。

关键词：紫外可见分光光度计 ADS1255 C8051F340 信号采集与处理

Interaction of major facilitator superfamily domain containing 2A with the blood-brain barrier

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Neural Regeneration Research 2025年第8期20卷 2133-2152页

作者： Yilun Ma Taiwei Dong Fei Luan Juanjuan Yang feng Miao Peifeng wei College of Pharmacy and First Clinical Medical College Shaanxi University of Chinese MedicineXianyangShaanxi ProvinceChina National Drug Clinical Trial Agency The Second Affiliated Hospital of Shaanxi University of Chinese Medicine/Xixian New District Central HospitalXi′anShaanxi ProvinceChina

The functional and structural integrity of the blood-brain barrier is crucial in maintaining homeostasis in the brain microenvironment;however,the molecular mechanisms underlying the formation and function of the blood-brain barrier remain poorly *** major facilitator superfamily domain containing 2A has been identified as a key regulator of blood-brain barrier *** plays a critical role in promoting and maintaining the formation and functional stability of the blood-brain barrier,in addition to the transport of lipids,such as docosahexaenoic acid,across the blood-brain ***,an increasing number of studies have suggested that major facilitator superfamily domain containing 2A is involved in the molecular mechanisms of blood-brain barrier dysfunction in a variety of neurological diseases;however,little is known regarding the mechanisms by which major facilitator superfamily domain containing 2A affects the blood-brain *** paper provides a comprehensive and systematic review of the close relationship between major facilitator superfamily domain containing 2A proteins and the blood-brain barrier,including their basic structures and functions,cross-linking between major facilitator superfamily domain containing 2A and the blood-brain barrier,and the in-depth studies on lipid transport and the regulation of blood-brain barrier *** comprehensive systematic review contributes to an in-depth understanding of the important role of major facilitator superfamily domain containing 2A proteins in maintaining the structure and function of the blood-brain barrier and the research progress to *** will not only help to elucidate the pathogenesis of neurological diseases,improve the accuracy of laboratory diagnosis,and optimize clinical treatment strategies,but it may also play an important role in prognostic *** addition,the effects of major facilitator superfamily domain containing 2A on blood-brain barrier lea

关键词： blood-brain barrier(BBB) caveolin-1 central nervous system docosahexaenoic acid endothelial cells lysophosphatidylcholine major facilitator superfamily domain containing 2A(MFSD2A) transcytosis

Integration of perioperative features and intragraft TCF7L2 expression to predict lipid metabolic disorder in liver transplant recipients

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Science China Life Sciences 2025年第1期 297-299页

作者： Junbin Zhou Rongli wei Guanghan Fan Zhengxing Lian Xuanyu Zhang Linsong Tang Zhetuo Qi Haiyang Xie Shusen Zheng qiang wei Xiao Xu Department of Hepatobiliary and Pancreatic Surgery People's Hospital of LishuiAffiliated Lishui Hospital of Wenzhou Medical UniversityThe First Affiliated Hospital of Lishui University NHFPC Key Laboratory of Combined Multi-Organ Transplantation Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province Department of Hepatobiliary and Pancreatic SurgeryHangzhou First People's Hospital Department of Hepatobiliary and Pancreatic Surgery The First Affiliated HospitalZhejiang University School of Medicine Department of Urology The Second Affiliated HospitalZhejiang University School of Medicine Department of Hepatobiliary and Pancreatic Surgery Department of Liver TransplantationShulan (Hangzhou) Hospital Hangzhou Medical College Zhejiang University School of Medicine

Dear Editor, Liver transplantation(LT) is the only curative therapy for patients with endstage liver disease(He et al., 2023; Ling et al., 2022). Post-transplant hypertriglyceridemia(PTHT), which has an incidence of up to 32.8% in 6 months after LT, is one of the major post-transplant complications(Toshima et al., 2020).

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Depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： feng Zhang Chenyang Zhang Linlin Wu wei Sun Hongliang Zhang Jianhua Chen Yong Pei Songjiang Li Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key Laboratory of Mineral Processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key Laboratory of Micro&Nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO_(3)in *** hydrophilic PbSO_(3)was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb^(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

有机磷酸酯阻燃剂的环境暴露、环境行为和毒性效应研究进展

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环境工程 2018年第9期36卷 180-184,35页

作者：李素珍付卫强冯承莲中冶建筑研究总院有限公司北京100088 北京铁路电气化学校北京102202 中国环境科学研究院环境基准与风险评估国家重点实验室北京100012

有机磷酸酯(organophosphate esters,OPEs)是一种新型有机磷阻燃剂,已逐渐成为传统溴代阻燃剂的替代品,其产量和使用量逐年增加。已有研究表明:有机磷酸酸酯在环境介质中广泛存在,可以在不同介质中进行迁移转化,而且具有神经、生殖等生... 详细信息

有机磷酸酯(organophosphate esters,OPEs)是一种新型有机磷阻燃剂,已逐渐成为传统溴代阻燃剂的替代品,其产量和使用量逐年增加。已有研究表明:有机磷酸酸酯在环境介质中广泛存在,可以在不同介质中进行迁移转化,而且具有神经、生殖等生物毒性。综述了OPEs在不同环境介质中的环境暴露、迁移转化等环境行为及其毒性效应等。最后,针对目前的研究现状,对OPEs的进一步研究方向提出展望,以期为新型有机磷阻燃剂的风险评估和环境监管提供依据。

关键词：有机磷酸酯阻燃剂环境暴露环境行为毒性效应

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棉花黄萎病菌致病力测定及评价方法研究

植物病理学报 2018年第2期48卷 248-255页

作者：袁媛冯自力李志芳赵丽红师勇强魏锋冯鸿杰朱荷琴棉花生物学国家重点实验室中国农业科学院棉花研究所安阳455000

棉花黄萎病菌致病力测定及评价是抗病育种及病害综合防治的基础。本文以我国三大棉区的167个黄萎菌菌株为对象,研究致病力测定及评价中不同批次之间病情指数的校准及致病力类型划分标准等关键技术环节。结果表明,以中等致病力类型菌株Vd... 详细信息

棉花黄萎病菌致病力测定及评价是抗病育种及病害综合防治的基础。本文以我国三大棉区的167个黄萎菌菌株为对象,研究致病力测定及评价中不同批次之间病情指数的校准及致病力类型划分标准等关键技术环节。结果表明,以中等致病力类型菌株Vd076为校正菌株,以感病性稳定的冀棉11为校正鉴别寄主,以校正菌株在校正鉴别寄主上病情指数达到50.0±5.0时的调查结果进行各菌株的致病力评价,可获得较好的校正效果,使不同批次试验数据具有可比性;依据聚类分析结果,制定了致病力类型划分标准,强、中、弱3种致病力类型的平均校正病指分别为﹥40.0、20.1～40.0和20.0;通过对不同鉴别寄主组合的分析,推荐陆地棉中棉所41号、豫棉21、鲁棉研28、中棉所35号、中棉所8号、冀棉11作为鉴别寄主。该研究为棉花黄萎病菌致病力变异等相关研究工作提供了技术支撑。

关键词：棉花黄萎病菌致病力鉴别寄主评价方法

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薄片类零件平面磨削工艺参数优化研究

制造业自动化 2011年第20期33卷 152-153页

作者：宋崇金宋崇寨魏强峰张琳琳同济大学机械工程学院上海201804 郑州煤炭工业集团郑州454000

针对薄片零件平面磨削过程中理论计算温度与实际温度偏差较大的问题,根据移动热源的实际传递规律并结合目前的两种温度场理论计算方法,建立了混合热传导模型,根据此模型用数学的方法解决了工艺优化问题。

关键词：薄片零件平面磨削参数优化

基于80C51型单片机和CH375型接口电路的LPT-USB打印机驱动器的设计与实现

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国外电子元器件 2006年第7期 25-29页

作者：王小芳郑宽磊强伟锋中国地质大学机电学院湖北武汉430074

介绍基于80C51型单片机与CH375型接口电路的LPT-USB打印机驱动器的设计与实现方法,介绍CH375型USB总线通用接口电路的特点及工作原理,给出80C51通过CH375控制USB打印机的硬件设计及其C语言软件。利用该设计能够实现并行打印口数据在USB... 详细信息

介绍基于80C51型单片机与CH375型接口电路的LPT-USB打印机驱动器的设计与实现方法,介绍CH375型USB总线通用接口电路的特点及工作原理,给出80C51通过CH375控制USB打印机的硬件设计及其C语言软件。利用该设计能够实现并行打印口数据在USB打印机直接打印,克服了有些并口仪器必须连接并口打印机才能打印的弊端,给用户提供了方便。

关键词： CH375 LPT USB打印机 80C51