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Correlation between Neutrophil Percentage-to-albumin Ratio and Coronary Heart Disease Complicated with Diabetes Mellitus

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Medicinal Plant 2024年第2期15卷 43-47页

作者： Wenjing ZHANG Yuhong SHI Guilan ZHANG Minghui ZHANG Zhoukai CUI Jiaying wang anjun ZHU Pingquan County Hospital Pingquan 067500China

[Objectives]This study was conducted to explore the relationship between neutrophil percentage-to-albumin ratio(NPAR)and coronary heart disease complicated with diabetes.[Methods]A total of 603 patients with coronary heart disease who underwent coronary angiography in Pingquan County Hospital from January,2023 to December,2023 and met the inclusion criteria were included as the research object.All the patients were divided into a coronary heart disease complicated with diabetes group(CAD+T2DM group)(n=298 cases)and a control group(CAD group)(n=305 cases),according to patients medical history,heart color ultrasound and biochemical test results.The clinical data,biochemical test results and coronary artery imaging data of patients were recorded,and the Gensini score was calculated.The neutrophil percentage(NEUT%)and albumin count were determined to calculate NPAR.[Results]The NPAR value of the coronary heart disease complicated with diabetes mellitus group was(1.6±0.42),which was significantly higher than that of the control group(1.47±0.49),and the difference was statistically significant(P<0.05).The area under the ROC curve was 0.619(95%CI:0.591-0.675,P<0.05),and the prediction of coronary heart disease complicated with diabetes using NPAR showed a Youden index of 0.31,a sensitivity of 60.4%,a specificity of 40.3%,and a best cut-off score of 1.4506.[Conclusions]The neutrophil percentage-to-albumin ratio(NPAR)is closely related to coronary heart disease complicated with diabetes mellitus,and NPAR has clinical application value in the diagnosis of coronary heart disease complicated with diabetes mellitus.

关键词： Neutrophil percentage-to-albumin ratio(NPAR) Gensini score Coronary heart disease Coronary angiography

Preparation of N-doped porous carbons via high internal phase emulsion template

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Progress in Natural Science:Materials International 2021年第2期31卷 270-278页

作者： Yulai Zhao Zhikui Zhao Zhongzheng Zhu anjun wang Linxi Hou Department of Materials-Oriented Chemical Engineering College of Chemical Engineering Fuzhou University

Heteroatom doped porous carbon materials have great application prospects in supercapacitors. In the present study, an approach of preparing N-doped porous carbon（NPC） was proposed from porous poly（resorcinolformaldehyde-melamine） monoliths which were prepared by high internal phase emulsion（HIPE） template.Melamine was dissolved in the external phase and copolymerized, acting as the N source and porous structure regulator to provide micropore-dominant NPCs. The structure, morphology, specific surface area（SSA）, and chemical composition of the samples were systematically studied. With melamine content increasing, N-doping content in NPC increased while the SSA of NPC increased at first and then decreased. When the content of N is 8.42 wt%, the obtained NPC showed the highest SSA of about 1670 m;g;. Furthermore, high N doping content could improve the electronic conductivity and provide additional pseudocapacitance of NPC. Under the combined influences of proper N content and high porosity, the prepared NPC electrodes revealed excellent specific capacitance(228.0 Fg;at 1.0 A g;, favorable circling stability, and prominent rate capability in a threeelectrode system with 6 M KOH solution as the electrolyte.

关键词： High internal phase emulsion N-doped porous carbon Melamine Supercapacitor

典型喀斯特区域土地利用变化对生态系统服务价值的响应情景模拟

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水土保持研究 2024年第4期31卷 308-315,325页

作者：王丹兰安军范泽孟邹永偲李文艳王仁儒贵州师范大学地理与环境科学学院贵阳550025 中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室北京100101 中国科学院大学资源与环境学院北京100039

[目的]模拟喀斯特地区土地利用变化引起的生态系统服务价值变化,分析土地利用变化对生态系统服务价值的响应关系,为区域可持续发展和生态安全保护提供科学依据。[方法]以生态环境脆弱的喀斯特地区贵州省为例,基于2000年、2010年及2020年... 详细信息

[目的]模拟喀斯特地区土地利用变化引起的生态系统服务价值变化,分析土地利用变化对生态系统服务价值的响应关系,为区域可持续发展和生态安全保护提供科学依据。[方法]以生态环境脆弱的喀斯特地区贵州省为例,基于2000年、2010年及2020年3期土地利用数据,通过PLUS模型预测了不同情景下土地利用情况,并进一步从空间分布上分析了多情景下ESV的变化特征。[结果](1)4种预设情景中,自然发展情景耕地面积与林地面积呈现大量减少的趋势,分别减少了101676,208481 hm^(2);(2)在4种预设情景下,研究区2030年ESV耕地与生态双保护情景(488.694亿元)>生态保护情景(488.524亿元)>自然发展情景(486.435亿元)>耕地保护情景(479.087亿元)。(3)在4种预设情景下,研究区2020年及多情景模拟下单位面积ESV的空间分布特征较为相似。但自然发展情景下其ESV在空间分布上高值区域明显减少。[结论]ESV与土地利用变化息息相关,对未来土地利用进行合理规划是保证良好的生态环境质量最直接的原因,从可持续发展角度来看,耕地与生态保护情景下的经济发展才是土地利用的最佳模式。

关键词：生态系统服务情景模拟土地利用 PLUS模型贵州省

T cells in health and disease

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Signal Transduction and Targeted Therapy 2023年第7期8卷 3296-3345页

作者： Lina Sun Yanhong Su anjun Jiao Xin wang Baojun Zhang Department of Pathogenic Microbiology and Immunology School of Basic Medical SciencesXi’an Jiaotong UniversityXi’anShaanxi 710061China Institute of Infection and Immunity Translational Medicine InstituteXi’an Jiaotong University Health Science CenterXi’anShaanxi 710061China Key Laboratory of Environment and Genes Related to Diseases Ministry of EducationXi’anShaanxi 710061China Xi’an Key Laboratory of Immune Related Diseases Xi’anShannxi 710061China

T cells are crucial for immune functions to maintain health and prevent disease.T cell development occurs in a stepwise process in the thymus and mainly generates CD4^(+)and CD8^(+)T cell subsets.Upon antigen stimulation,naïve T cells differentiate into CD4^(+)helper and CD8^(+)cytotoxic effector and memory cells,mediating direct killing.

关键词： stimulation maintain stepwise

Design optimization of guide vane for mitigating elbow erosion using computational fluid dynamics and response surface methodology

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Particuology 2022年第4期20卷 83-94页

作者： anjun Li Zhenbo wang Liyun Zhu Zengli wang Jingyuan Shi Wensan Yang School of New Energy China University of Petroleum(East China)266580 ShandongChina CNPC East China Design Institute Co. Ltd.266071 ShandongChina

A90°elbow equipped with guide vanes was developed with the intent of reducing elbow erosion.Numerical models were formed to predict the maximum erosion rate of elbow and Face-1,and the response surface methodology was used to study the relationship between the erosion rate and structural parameters of guide vane.A second-order response surface model was established to determine the relationship between R and variables,and a reduced cubic(RC)polynomial model was obtained to reveal the relation-ship between R2 and the three factors.The numerical results show that the low-speed region is expended and the maximum discrete particle matter(DPM)concentration is reduced after installing the guide vane.This internal component provides a shelter for the elbow from the direct impact of high-speed solids.

关键词： Elbow Particle erosion Guide vane Response surface methodology

Optima of Trypsin-Catalyzed Hydrolysis and Its Inhibition Determined by SDS-PAGE

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Advances in Enzyme Research 2016年第1期4卷 1-6页

作者： Xueke Zhou Tingting wang anjun wang Renqiang Li Department of Biotechnology Jinan University Guangzhou China

SDS-PAGE was applied to determine trypsin activity and inhibition. After the hydrolysis by trypsin to substrate bovine serum albulnin (BSA) under different temperatures and pH, the hydrolysis degree of BSA was conducted using SDS-PAGE. From the quantitative analysis to the electrophoresis bands of BSA and its hydrolysis products in SDS-PAGE pattern, the change of trypsin activity was determined, and then the optimum temperature at 40°C and the optimum pH at pH 8.5 - 8.7 for trypsin activity were obtained. All the target bonds in BSA molecule could be hydrolyzed at the same time by trypsin. The inhibition was due to the binding of inhibitor to trypsin, which made it impossible for trypsin to touch the substrate protein. SDS-PAGE was demonstrated to be also an effect method for assaying the characteristics of trypsin activity and its inhibition.

关键词： Trypsin-Catalyzed Hydrolysis Trypsin Inhibitor Optimum Condition SDS-PAGE Assay Method

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应用于胶囊机器人的分块内存传输方法

医疗装备 2024年第7期37卷 32-35,44页

作者：张垚夏安俊汪凤翔福建农林大学机电工程学院福建福州350100 中国科学院海西研究院泉州装备制造研究中心福建泉州362200

控制器的存储空间在胶囊机器人的图像数据传输中起决定性作用。随机存取存储器(RAM)存储空间的大小与胶囊机器人系统中硬件体积有关,受限于胶囊机器人系统的体积尺寸,小内存RAM无法完成大容量图像数据的采集和发送。该研究提出了一种分... 详细信息

控制器的存储空间在胶囊机器人的图像数据传输中起决定性作用。随机存取存储器(RAM)存储空间的大小与胶囊机器人系统中硬件体积有关,受限于胶囊机器人系统的体积尺寸,小内存RAM无法完成大容量图像数据的采集和发送。该研究提出了一种分块内存传输方法,首先采用光学镜头OV5640采集图像数据,并对RAM内存进行分块管理,将图像数据存储到分块内存块,最后通过无线通信模块循环发送内存块中的数据,实现边采集边存储边发送的功能,达到采用小内存完成大容量图片的采集和发送的目的。搭建胶囊机器人系统模拟平台,用于验证数据传输实验。实验结果表明,相距2 m距离时,上位机系统可以接收到由胶囊机器人系统模拟平台传输过来的图像。该研究提出的方法能够在有限的RAM内存中实现对大容量图片的采集和发送,提高了胶囊机器人系统的图片拍摄效率。

关键词：胶囊机器人光学镜头OV5640 无线通信分块内存

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银粉对硅异质结太阳电池用低温银浆的影响综述

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太阳能学报 2024年第2期45卷 489-498页

作者：王光远韩安军刘文柱赵文婕王栋良敖毅伟冈本珍范孟凡英刘正新中国科学院上海微系统与信息技术研究所新能源技术中心上海200050 常州聚和新材料股份有限公司常州213000

银浆是硅异质结太阳电池的重要材料,更低的体积电阻率和接触电阻、良好的附着力、优良的细线印刷性能及组件栅线抗腐蚀老化是其不断改进的方向。作为导电相,银粉的性能和含量对银浆有着至关重要的影响。该文基于低温固化银浆导电机理以... 详细信息

银浆是硅异质结太阳电池的重要材料,更低的体积电阻率和接触电阻、良好的附着力、优良的细线印刷性能及组件栅线抗腐蚀老化是其不断改进的方向。作为导电相,银粉的性能和含量对银浆有着至关重要的影响。该文基于低温固化银浆导电机理以及SHJ电池对银浆性能的追求,综述了银粉的振实密度、形貌、粒径、表面处理剂及其与有机物的适配。进一步探讨了纳米银粉和银包铜粉在SHJ太阳电池用低温银浆中的应用。

关键词：硅异质结太阳电池低温银浆银粉表面处理振实密度银包铜

基于简化空间矢量调制的三电平整流器级联式无差拍控制策略

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微特电机 2024年第3期52卷 33-40页

作者：孙晓伟夏安俊汪凤翔福建农林大学机电工程学院福州350100 中国科学院海西研究院泉州装备制造研究中心泉州362216

为解决有限控制集模型预测控制(FCS-MPC)运行过程中计算强度过大与计算时间过长的问题,提出了一种基于简化空间矢量调制的三电平整流器级联式无差拍控制策略,通过构建特定扇区选出最佳电压矢量。为建立精确的系统模型,深入分析三电平整... 详细信息

为解决有限控制集模型预测控制(FCS-MPC)运行过程中计算强度过大与计算时间过长的问题,提出了一种基于简化空间矢量调制的三电平整流器级联式无差拍控制策略,通过构建特定扇区选出最佳电压矢量。为建立精确的系统模型,深入分析三电平整流器,构建二维离散系统数学模型,基于无差拍控制理念设计了一套功率内环与电压外环的双环控制方案,并建立Luenberger观测器对电力扰动及负载变化进行精确估测与补偿,使无功功率与有功功率快速解耦和响应。结合上述系统架构,分别建立常规、单预测、简化预测FCS-MPC模型,并证明其等效性。分析不同约束变量对电压矢量决策的影响,并构建特定选择扇区设计简化的空间矢量调制策略。实验结果表明,所提控制控制策略能够在多重约束条件下改进性能,并且在保持控制效果不变的前提下,大幅度减少计算量。

关键词：级联无差拍控制 Luenberger观测器扇区简化技术三电平整流器有限控制集模型预测控制