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品管圈活动缩短妇产科腹部手术后尿管留置时间的应用效果

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中华医院感染学杂志 2024年第2期34卷 288-293页

作者：李玲玲彭飞顾春怡任雪宁杨秋雨张群上海长征医院妇产科上海200003 上海长征医院护理部上海200003 复旦大学附属妇产科医院护理部上海200011 上海长征医院疾病预防控制科上海200003

目的探讨品管圈活动(QCC)在缩短妇产科腹部手术患者尿管留置时间中的作用,评价降低导尿管相关性尿路感染的效果。方法分别选取海军军医大学第二附属医院妇产科收治的品管圈活动开展前后行腹部手术住院患者为研究对象,其中2020年12月10日... 详细信息

目的探讨品管圈活动(QCC)在缩短妇产科腹部手术患者尿管留置时间中的作用,评价降低导尿管相关性尿路感染的效果。方法分别选取海军军医大学第二附属医院妇产科收治的品管圈活动开展前后行腹部手术住院患者为研究对象,其中2020年12月10日—2020年12月30日收治的59例为实施QCC活动前,2021年5月13日—2021年6月2日收治的61例为实施QCC活动后,比较两组患者术后尿管留置时间、导尿管相关性尿路感染(CAUTI)发生情况、术后首次下床时间和术后住院天数。结果实施QCC活动后,腹部手术患者尿管留置时间由(34.84±8.74)h缩短至(21.54±4.92)h,比较差异有统计学意义(P<0.05);QCC活动前,3例患者发生CAUTI,QCC活动后未发生CAUTI;与QCC活动前比较,患者首次下床时间缩短(P<0.05),术后住院天数比较无统计学差异;QCC活动后,圈员的解决问题能力、责任心、沟通协调、自信心、团队凝聚力、积极性、品管手法和和谐度均呈正向提升。结论品管圈活动有效缩短了腹部手术患者的尿管留置时间,缩短了患者术后首次下床时间,整个活动过程增强了医护团队凝聚力,规范了CAUTI医院感染防控流程。

关键词：品管圈腹部手术尿管留置时间导尿管相关性尿路感染

纳米氧化锌粒子薄膜的场效应载流子迁移率特性的研究

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黑龙江大学工程学报（中英俄文） 2024年第1期15卷 21-26页

作者：杨秋雨王秀秀覃斑李辰砂黑龙江大学化学化工与材料学院哈尔滨150080

将纳米氧化锌粒子制备纳米膜,研究其场效应性能与载流子迁移性能。通过在有机溶剂介质中热分解油酸锌配合物,合成出尺寸均匀的六方相氧化锌纳米晶粒子。以沉积了铝钛氧化物层与铟锡氧化物层的玻璃为载体,通过旋涂工艺将纳米氧化锌粒子... 详细信息

将纳米氧化锌粒子制备纳米膜,研究其场效应性能与载流子迁移性能。通过在有机溶剂介质中热分解油酸锌配合物,合成出尺寸均匀的六方相氧化锌纳米晶粒子。以沉积了铝钛氧化物层与铟锡氧化物层的玻璃为载体,通过旋涂工艺将纳米氧化锌粒子涂覆于其表面,制备出场效应薄膜晶体管。通过工艺优化,制成的半导体纳米氧化锌薄膜晶体管具有优异的可控结构及致密分布的氧化锌纳米晶体,表现出优异的场效应性能与载流子迁移性能。这种直接由氧化锌纳米晶制备的薄膜晶体管具有非毒性、好的透明性以及优越而稳定的场效应半导体器件性能。该技术可高效,便利且低成本大批量地制备氧化锌薄膜晶体管,便于后续在电子等领域的应用。

关键词：氧化锌纳米粒子薄膜晶体管热分解半导体

Intraspecific floral colour variation in three Pedicularis species

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Plant Diversity 2024年第2期46卷 274-279页

作者： qiu-yu Zhang Zhe Chen Hang Sun yang Niu State Key Laboratory of Plant Diversity and Specialty Crops Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina University of Chinese Academy of Sciences Beijing 100049China

Flower constancy describes the phenomenon that pollinators tend to successively visit flowers of a single species during foraging,reducing reproductive interference in natural *** extent of flower constancy is largely determined by the floral traits of co-flowering *** higher inter-specific and lower intraspecific differences of floral traits should contribute to a higher level of flower ***,previous studies mainly focused on interspecific difference,and the intraspecific variation(consistency)of floral traits received much less *** hypothesise that selection may favour lower intraspecific floral trait variation in communities composed of multiple co-flowering *** investigated the floral colour variation of three focal Pedicularis species that share pollinators in 19communities composed of either single or multiple Pedicularis *** was quantified using image-based colour analysis as perceived by *** found that most of the intrapopulation floral colour variation was below the colour discrimination threshold of bumblebees,implying strongly constrained by the visual selection by *** to the hypothesis,there is no significant difference in intraspecific floral colour variation between different community *** may be due to the relatively large interspecific floral colour differences of most co-flowering *** influence of community context on intraspecific variation may be reflected in floral traits other than colours.

关键词： Flower constancy Floral colour variation Plantepollinator interactions Pollinator vision

Research on the mechanism of the two-dimensional ultrasonic surface burnishing process to enhance the wear resistance for aluminum alloy

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Friction 2024年第3期12卷 490-509页

作者： Zhen-yu ZHOU qiu-yang ZHENG yu LI Cong DING Guang-Jian PENG Zhong-yu PIAO College of Mechanical Engineering Zhejiang University of TechnologyHangzhou 310023China Key Laboratory of Special Purpose Equipment and Advanced Processing Technology Ministry of Education and Zhejiang ProvinceZhejiang University of TechnologyHangzhou 310014China

The gradient nanostructure is machined on the aluminum(Al)alloy by the two-dimensional ultrasonic surface burnishing process(2D-USBP).The mechanism of why the gradient nanostructure enhances wear resistance is *** mechanical properties and microstructure characterization for the gradient nanostructure are performed by operating a nanoindenter,transmission electron microscopy(TEM),and electron backscattered diffraction(EBSD).Dry wear tests are performed on the samples before and after machining to evaluate the wear resistance and *** effect of the gradient nanostructure on the wear resistance is explored by developing the crystal plasticity(CP)finite element and molecular dynamics(MD)*** characterization results show that the 2D-USBP sample prepared a gradient structure of~600μm thick on the aluminum surface,increasing the surface hardness from 1.13 to 1.71 GPa and reducing the elastic modulus from 78.84 to 70.14 *** optimization of the surface microstructure and the increase of the mechanical properties effectively enhance the wear resistance of the sample,with 41.20%,39.07%,and 54.58% of the wear scar areas for the 2D-USBP treated samples to the original samples under 5,10,and 15 N loads,*** gradient nanostructure hinders the slip of dislocations inside the sample during the wear process and reduces the size and scope of plastic deformation;meanwhile,the resistance to deformation,adhesion,and crack initiation and propagation of the sample surface is improved,resulting in enhanced wear resistance.

关键词： structural superlubricity lattice registry elastic deformation strained solitons crystal plasticity molecular dynamics simulations

Research progress of ferroptosis regulating lipid peroxidation and metabolism in occurrence and development of primary liver cancer

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2335-2349页

作者： yu-Jie Shu Bo Lao Ying-yang qiu Department of Gastroenterology Yinzhou District Second HospitalNingbo 315199Zhejiang ProvinceChina Yong Loo Lin School of Medicine National University of SingaporeSingapore 119077Singapore

As a highly aggressive tumor,the pathophysiological mechanism of primary liver cancer has attracted much *** recent years,factors such as ferroptosis regulation,lipid peroxidation and metabolic abnormalities have emerged in the study of liver cancer,providing a new perspective for understanding the development of liver *** regulation,lipid peroxidation and metabolic abnormalities play important roles in the occurrence and development of liver *** regulation of ferroptosis is involved in apoptosis and necrosis,affecting cell survival and *** peroxidation promotes oxidative damage and promotes the invasion of liver cancer *** abnormalities,especially the disorders of glucose and lipid metabolism,directly affect the proliferation and growth of liver cancer *** of ferroptosis regulation and lipid peroxidation may help to discover new therapeutic targets and improve therapeutic *** understanding of metabolic abnormalities can provide new ideas for the prevention of liver cancer,and reduce the risk of disease by adjusting the metabolic *** review focuses on the key roles of ferroptosis regulation,lipid peroxidation and metabolic abnormalities in this process.

关键词： Ferroptosis Lipid peroxidation Primary liver cancer Lipid metabolism Review

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安徽吉阳软岩动力特性的共振柱试验研究

全面腐蚀控制 2024年第7期38卷 26-28页

作者：刘锋王旭宏杨球玉吕涛李昶刘翔宇夏加国中国核电工程有限公司北京100840

安徽吉阳软岩动剪切模量随动剪应变增大非线性减小,而阻尼比随剪应变增大非线性增大,且γ_(d)=1×10^(-4)附近时变化幅度最大。最大动剪切模量受固结压力影响明显,随着固结压力增大,最大动剪切模量值明显增大,且两者之间相关性较好,服... 详细信息

安徽吉阳软岩动剪切模量随动剪应变增大非线性减小,而阻尼比随剪应变增大非线性增大,且γ_(d)=1×10^(-4)附近时变化幅度最大。最大动剪切模量受固结压力影响明显,随着固结压力增大,最大动剪切模量值明显增大,且两者之间相关性较好,服从幂函数分布;最大阻尼比随固结压力增大而减小,但两者不存在明显的相关性。

关键词：吉阳软岩动剪切模量阻尼比动剪应变

Carbon enhanced nucleophilicity of Na_(3)V_(2)(PO_(4))_(3):A general approach for dendrite-free zinc metal anodes

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Journal of Energy Chemistry 2024年第4期91卷 203-212页

作者： Sijun Wang Lingzi Hu Xiaohui Li Dan qiu Shunhang qiu Qiancheng Zhou Wenwen Deng Xiaoying Lu Ze yang Ming qiu Ying yu Institute of Nanoscience and Nanotechnology School of Physical Science and TechnologyCentral China Normal UniversityWuhan 430079HubeiChina School of Material Science and Engineering Suzhou University of Science and TechnologySuzhou 215000JiangsuChina Faculty of Science and Technology Technological and Higher Education Institute of Hong KongHong KongChina

Zincophilic property and high electrical conductivity are both very important parameters to design novel Zn anode for aqueous Zn-ion batteries(AZIBs).However,single material is difficult to exhibit zincophilic property and high electrical conductivity at the same ***,originating from theoretical calculation,a zincophilic particle regulation strategy is proposed to address these limitations and carbon coated Na_(3)V_(2)(PO_(4))_(3)is taken as an example to be a protective layer on zinc metal(NVPC@Zn).Na_(3)V_(2)(PO_(4))_(3)(NVP)is a common cathode material for Zn-ion batteries,which is *** materials not only offer an electron pathway to help Zn deposition onto NVPC surface,but also enhance the zinc nucleophilicity of Na_(3)V_(2)(PO_(4))_(3).Hence,this hybrid coating layer can tune zinc deposition and resist side reactions such as hydrogen generation and Zn metal ***,a symmetrical battery with NVPC@Zn electrode displays highly reversible plating/stripping behavior with a long cycle lifespan over 1800 h at2 mA cm^(-2),much better than carbon and Na_(3)V_(2)(PO_(4))_(3)solely modified Zn *** the Na_(3)V_(2)(PO_(4))_(3)is replaced with zincophobic Al2O3or zincophilic V2O3,the stability of the modified zinc anodes is also *** strategy expands the option of zincophilic materials and provides a general and effective way to stabilize the Zn electrode.

关键词： Zinc-ion batteries Zinc anode Carbon enhanced nucleophilicity Zincophilic particle regulation

Failure transition of shear-to-dilation band of rock salt under triaxial stresses

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第1期16卷 56-64页

作者： Jianfeng Liu Xiaosong qiu Jianxiong yang Chao Liang Jingjing Dai yu Bian State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu610065China CNPC Key Laboratory of Oil and Gas Underground Storage Engineering Langfang065007China College of Water Resource and Hydropower Sichuan UniversityChengdu610065China

Great potential of underground gas/energy storage in salt caverns seems to be a promising solution to support renewable *** the underground storage method,the operating cycle unfortunately may reach up to daily or even hourly,which generates complicated pressures on the salt ***,the mechanical behavior of rock salt may change and present distinct failure characteristics under different stress states,which affects the performance of salt cavern during the time period of full *** reproduce a similar loading condition on the cavern surrounding rock mass,the cyclic triaxial loading/unloading tests are performed on the rock salt to explore the mechanical transition behavior and failure characteristics under different *** results show that the rock salt samples pre-sent a diffused shear failure band with significant bulges at certain locations in low confining pressure conditions(e.g.5 MPa,10 MPa and 15 MPa),which is closely related to crystal misorientation and grain boundary *** the elevated confinement(e.g.20 MPa,30 MPa and 40 MPa),the dilation band dominates the failure mechanism,where the large-size halite crystals are crushed to be smaller size and new pores are *** failure transition mechanism revealed in the paper provides additional insight into the mechanical performance of salt caverns influenced by complicated stress states.

关键词： Rock salt Cyclic mechanical loading Shear band Dilation band Underground gas storage(UGS)

Understanding livelihood vulnerability:a perspective from Western Sichuan’s ethnic rural settings

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Journal of Mountain Science 2024年第2期21卷 380-396页

作者： yu Yongqian JING Zheng WANG Yan qiu Xiaoping yang Xueting XU yun School of Geography and Resource Science Sichuan Normal UniversityChengdu 610101China Key Laboratory of land Resources Evaluation and Monitoring in Southwest Ministry of EducationSichuan Normal UniversityChengdu 610101China Sichuan County Economic Development Research Center Mianyang Normal UniversityMianyang 621000China Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041China

To explore the livelihood status and key influencing factors of rural households in the minority areas,we collected flat data from 284 rural households in 32 villages across 12 counties of Western Sichuan from 2021 to *** conducted participatory household survey on the livelihood status of the rural households and try to identify the key factors to influence their livelihood vulnerability using multiple linear *** results showed that:the livelihood situation of the rural households is relatively *** vulnerability varies significantly with the income levels,education levels,and income *** vulnerability of farm households,categorized from low to high livelihood types,follows the sequence:non-agricultural dominant households,non-agricultural households,agricultural dominant households,and pure agricultural *** degree of damage to the natural environment,education costs,loan opportunities,the proportion of agricultural income to annual household income,and the presence of sick people in the household have significant positive effects on the livelihood vulnerability index(LVI)of rural households;while help from relatives and friends,net income per capita,household size,household education,agricultural land area,participation in industrial organizations,number of livestock,purchase of commercial houses,drinking water source,and self-supply of food have significant negative *** on the findings,we believe that local rural households operate in a complex livelihood system and recommend continuous interventions targeting key influences to provide empirical research support for areas facing similar situations.

关键词： Livelihood Vulnerability Rural households Ethnic areas