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相位角在血液透析患者中与不同营养不良评定工具的相关性研究

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中华临床营养杂志 2024年第2期32卷 117-121页

作者：林晓倩林钇汐刘红陈曦黄娟杨剑重庆医科大学附属第三医院临床营养科重庆401120 重庆医科大学公共卫生学院重庆401331

目的探讨生物电阻抗相位角在维持性血液透析(maintenance hemodialysis,MHD)患者营养不良评定中的应用及其与不同营养不良评定工具的相关性。方法研究采用横断面研究设计,选取MHD患者151例。利用生物电阻抗分析对患者进行人体成分检测... 详细信息

目的探讨生物电阻抗相位角在维持性血液透析(maintenance hemodialysis,MHD)患者营养不良评定中的应用及其与不同营养不良评定工具的相关性。方法研究采用横断面研究设计,选取MHD患者151例。利用生物电阻抗分析对患者进行人体成分检测。采用体重指数(body mass index,BMI)、营养风险筛查2002(nutritional risk screening 2002,NRS 2002)评分和全球营养领导层诊断营养不良标准(global leadership initiative on malnutrition,GLIM),比较不同标准对MHD患者营养不良患病检出率。分析相位角与MHD患者营养相关指标如内脏脂肪面积、体重、骨骼肌、血清白蛋白等的相关性,并检验相位角与其他营养不良评定工具结果的相关性。结果BMI、NRS 2002评分和GLIM标准检出患者营养不良检出率分别为9.27%、27.81%和54.97%。MHD患者相位角与BMI呈正相关(P<0.01)、与NRS 2002评分呈负相关(P<0.01),与GLIM标准也具有相关性(P<0.001)。进一步研究发现,其相位角与体重、骨骼肌、血清白蛋白呈正相关(P<0.01);与内脏脂肪面积、细胞外水分比率呈负相关(P<0.01)。结论MHD患者营养不良患病率高,通过对比不同标准下的营养不良患病率,发现相位角与BMI、NRS 2002评分、GLIM标准具有较好的相关性。提示相位角在MHD患者营养不良评定中具有一定研究价值,其在临床应用中的价值还需要进一步大规模研究数据作为支撑。

关键词：维持性血液透析营养不良身体成分相位角

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固体电解质界面层锂合金相的高通量筛选与界面离子输运研究

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物理化学学报 2024年第3期40卷 50-59页

作者：窦智段慧宇林奕希夏颖慧郑明波许真铭南京航空航天大学材料科学与技术学院江苏省高效电化学储能技术重点实验室南京210016

固体电解质界面层(SEI)对锂离子电池的电化学性能有着重要影响,理想的SEI层应同时具备良好的电子绝缘性、较高的离子电导率,以及一定的界面机械强度来承受锂沉积/剥离行为所伴随的体积变化和抑制锂枝晶形成。构筑LiF基人工SEI层已被证... 详细信息

固体电解质界面层(SEI)对锂离子电池的电化学性能有着重要影响,理想的SEI层应同时具备良好的电子绝缘性、较高的离子电导率,以及一定的界面机械强度来承受锂沉积/剥离行为所伴随的体积变化和抑制锂枝晶形成。构筑LiF基人工SEI层已被证明是保护固态锂离子电池负极界面的有效策略。本工作通过材料数据库挖掘技术、高通量第一性原理计算和从头算分子动力学模拟对若干锂合金进行相图计算、扩散能垒计算,以评估其热力学稳定性和锂离子扩散能力,最终筛选出27种可用于LiF基人工SEI层锂离子导电相的锂合金材料。同时,对若干锂合金的晶体结构-扩散性质进行构效关系分析发现,锂合金晶体结构类型对锂离子扩散能力的影响比其元素组分更加显著,即I43d和Fm3m族群结构的锂合金具备非常优异的锂离子输运性能,而Pm3m和F43m族群结构的锂合金扩散通道狭窄,锂离子输运性能差。此外,本计算工作发现锂离子在LiF晶体中扩散迁移是极其困难的,而在LiF晶界和LiF/LiM合金界面迁移扩散阻力极小,藉此获得人工SEI界面层中锂离子输运的物理图像。

关键词：固态电池人工SEI界面锂合金第一性原理计算界面离子扩散

Texture Evolution Induced by Deformation in Aluminum Alloy

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上海交通大学学报 2004年第z2期38卷 206-211页

作者： Zhao yixi lin zhongqin Li shuhui Yu zhongqi School of Mechanical Engineering Shanghai Jiaotong Univ. Shanghai200030 China School of Mechanical Engineering Shanghai Jiaotong Univ. Shanghai200030 China School of Mechanical Engineering Shanghai Jiaotong Univ. Shanghai200030 China School of Mechanical Engineering Shanghai Jiaotong Univ. Shanghai200030 China

The lower formability of aluminum alloy sheets is the inherent characteristic of the material. During material forming processes the material undergoes a complex strain history. In this paper, the effect of crystallographic texture induced by deformation in aluminum sheet is studied. The transformation of crystallographic textures induced by uniaxial tensile, cup drawing and bulge tests was measured through X-ray diffraction and analyzed. The author studied the texture evolution rule under different strain paths. A qualitative relationship between the deformation and texture evolution has been founded.

关键词： texture evolution aluminum alloy deformation strain path

Machine learning molecular dynamics simulation identifying weakly negative effect of polyanion rotation on Li-ion migration

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npj Computational Materials 2023年第1期9卷 1276-1286页

作者： Zhenming Xu Huiyu Duan Zhi Dou Mingbo Zheng yixi lin Yinghui Xia Haitao Zhao Yongyao Xia College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics210016 NanjingChina Center for Intelligent and Biomimetic Systems Shenzhen Institutes of Advanced Technology(SIAT)Chinese Academy of Sciences(CAS)518055 ShenzhenChina Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New EnergyiChEm(Collaborative Innovation Center of Chemistry for Energy Materials)Fudan University200433 ShanghaiChina

Understanding the physical picture of Li ion transport in the current ionic conductors is quite essential to further develop lithium superionic conductors for solid-state *** traditional practice of directly extrapolating room temperature ion diffusion properties from the high-temperature(>600 K)ab initio molecular dynamics simulations(AIMD)simulations by the Arrhenius assumption unavoidably cause some ***,the ultralong-time molecular dynamics simulation based on the machine-learning interatomic potentials(MLMD)is a more suitable tool to probe into ion diffusion events at low temperatures and simultaneously keeps the accuracy at the density functional theory ***,by the low-temperature MLMD simulations,the non-linear Arrhenius behavior of Li ion was found for Li3ErCl6,which is the main reason for the traditional AIMD simulation overestimating its ionic *** 1μs MLMD simulations capture polyanion rotation events in Li_(7)P_(3)S_(11) at room temperature,in which four[PS_(4)]^(3−)tetrahedra belonging to a part of the longer-chain[P_(2)S_(7)]4−group are noticed with remarkable rotational motions,while the isolated group[PS_(4)]^(3−)does not ***,no polyanion rotation is observed in Li10GeP_(2)S12,β-Li3PS_(4),Li3ErCl6,and Li3YBr6 at 300 K during 1μs simulation ***,the ultralong-time MLMD simulations demonstrate that not only there is no paddle-wheel effect in the crystalline Li_(7)P_(3)S_(11) at room temperature,but also the rotational[PS_(4)]^(3−)polyanion groups have weakly negative impacts on the overall Li ion *** ultralong-time MLMD simulations deepen our understanding of the relationship between the polyanion rotation and cation diffusion in ionic conductors at room environments.

关键词： rotation dynamics effect

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妊娠期膳食模式与早产风险的meta分析

现代医药卫生 2024年第11期40卷 1909-1916页

作者：刘星宇李世文林钇汐李继斌重庆医科大学公共卫生学院营养与食品卫生教研室重庆400016

目的评估妊娠期膳食模式对早产发生风险的影响,为降低早产发生率提供膳食指导依据。方法系统检索PubMed、Web of Science、知网等数据库关于妊娠期膳食模式和早产关联的相关研究,将膳食模式按照食物成分相似性,分为“健康”“不健康”... 详细信息

目的评估妊娠期膳食模式对早产发生风险的影响,为降低早产发生率提供膳食指导依据。方法系统检索PubMed、Web of Science、知网等数据库关于妊娠期膳食模式和早产关联的相关研究,将膳食模式按照食物成分相似性,分为“健康”“不健康”和“混合”3种膳食模式,运用RevMan5.4软件对纳入研究中妊娠期膳食最高和最低依从性的结局效应进行meta分析,并进行亚组分析和敏感性分析。结果最终纳入23篇文献,总样本量312892例。对其中18篇文献进行meta分析结果显示,健康膳食模式依从性高可降低早产发生风险[OR=0.82,95%CI(0.76,0.89)],进行亚组分析和敏感性分析后结局稳定。纳入文献中的健康膳食模式漏斗图不对称,存在发表偏倚。不健康膳食模式和混合膳食模式与早产发生风险之间未发现显著相关性。结论不同的膳食模式对早产的发生风险具有较大影响,妊娠期高摄入水果、蔬菜、全谷物、低脂乳制品、豆类、植物油和鱼类等健康膳食模式可降低早产发生风险。

关键词：膳食模式妊娠早产 meta分析

Study on green power supply modes for heavy load in Remote Areas

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Global Energy Interconnection 2024年第4期7卷 475-485页

作者： Yu Li yixi Cuomu Yiming Gao Guoqin Lv Weiwei lin Sirui Li Changchun Zhou State Grid Xizang Electric Power Co. Ltd.Lhasa 850010Tibet Autonomous RegionP.R.China Global Energy Interconnection Development and Cooperation Organization Beijing 100031P.R.China State Grid Fujian Power Economic Research Institute Fuzhou 350012P.R.China Eindhoven University of Technology Eindhoven.5621 AENetherlands

In this study,the present situation and characteristics of power supply in remote areas are *** studying the cases of power supply projects in remote areas,the experience is analyzed and described,and the applicability of related technologies,such as grid-forming storage and power load management,is studied,including grid-connection technologies,such as grid-forming converters and power load *** this basis,three power-supply modes were *** application scenarios and advantages of the three modes were compared and *** on the local development situation,the temporal sequences of the three schemes are described,and a case study was *** study of the heavy-load power supply mode in remote areas contributes to solving the problem of heavy-load green power consumption in remote areas and promoting the further development of renewable energy.

关键词： Remote area Renewable energy Grid-forming storage Power load management Power supply mode

Harnessing cytokine-induced killer cells to accelerate diabetic wound healing:an approach to regulating post-traumatic inflammation

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Regenerative Biomaterials 2024年第2期3卷 88-99页

作者： yixi Yang Cheng Zhang Yuan Jiang Yijun He iawei Cai lin Liang Zhaohuan Chen Sicheng Pan Chu Hua Keke Wu Le Wang Zhiyong Zhang Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University Guangdong Province Engineering Research Center for Biomedical EngineeringState Key Laboratory of Respiratory DiseaseDepartment of Orthopaedic SurgeryMedical Technology and Related Equipment Research for Spinal Injury TreatmentCity Key LaboratoryThe Third Affliated Hospital of Guangzhou Medical UniversitySchool of Biomedical EngineeringGuangzhou MedicalUniversityGuangzhouGuangdong510150P.R.China Department of Osteoarthropathy and Sports Medicine Panyu Central HospitalGuangzhou 511400P.R.China

Impaired immunohomeostasis in diabetic wounds prolongs infiammation and cytokine dysfunction,thus,delaying or pre-venting wound-surface *** clinical studies have been conducted on cytokine-induced killer(CIK)cells recently,as they can be easily proliferated using a straightforward,inex-pensive ***,the function of CIK cells in regulat-ing inflammatory environments has been drawing attention for clinical *** the current investigation,we discovered the regenerative capacity of these cells in the chal-lenging environment of wounds that heal poorly due to *** demonstrated that the intravenous injection of CIK cells can re-establish a proregenerative inflammatory *** *** accelerateskin healing in diabetic *** results indicated that CIK cell treatment affects macrophage polarization and restores the function regenerative cells under hyperglycemic *** novel cellular therapy offers a promising intervention for clinical applic tions through specific inflammatory regulation functions.

关键词： macrophage diabetic wound post-traumatic inflammation cytokine-induced killer cells vascularization

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珠海地区软土的工程特性及工程建设问题

岩石力学与工程学报 2006年第z2期25卷 3372-3376页

作者：林奕禧艾康洪黄良机珠海市建设工程质量监督检测站广东珠海519015 广东省珠海工程勘察院广东珠海519002

通过收集整理大量的软土测试资料,获得具有代表性的珠海地区软土的物理力学性质指标,指出该地区软土普遍具有含水量大、压缩性高和承载力低等工程特性,而且还具有很强的结构性和欠固结特性。此外,结合珠海地区软土工程建设的成功经验和... 详细信息

通过收集整理大量的软土测试资料,获得具有代表性的珠海地区软土的物理力学性质指标,指出该地区软土普遍具有含水量大、压缩性高和承载力低等工程特性,而且还具有很强的结构性和欠固结特性。此外,结合珠海地区软土工程建设的成功经验和失败教训,对珠海软土地基处理、软土基坑工程和软土桩基工程等有关岩土工程问题进行综述。

关键词：土力学软土地基处理基坑支护桩基础

Himalayas as a global hot spot of springtime stratospheric intrusions:Insight from isotopic signatures in sulfate aerosols

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Research in Cold and Arid Regions 2024年第1期16卷 5-13页

作者： Kun Wang ShiChang Kang Mang lin PengFei Chen ChaoLiu Li XiuFeng Yin Shohei Hattori Teresa L.Jackson JunHua Yang yixi Liu Naohiro Yoshida Mark HThiemens State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of Sciences(CAS)LanzhouGansu 730000China State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryCASGuangzhouGuangdong 510640China University of Chinese Academy of Sciences Beijing 100049China International Center for Isotope Effects Research(ICIER) School of Earth Sciences and EngineeringNanjing UniversityNanjingJiangsu 210023China Frontiers Science Center for Critical Earth Material Cycling State Key Laboratory for Mineral Deposits ResearchSchool of Earth Sciences and EngineeringNanjing UniversityNanjingJiangsu 210023China Department of Chemical Science and Engineering School of Materials and Chemical TechnologyTokyo Institute of Technology4259 Nagatsuta-choMidori-kuYokohamaKanagawa 226-8502Japan Department of Chemistry and Biochemistry University of California San DiegoLa JollaCA 92093-0021USA Earth-Life Science Institute Tokyo Institute of TechnologyMeguro-kuTokyo 152-8551Japan National Institute of Information and Communications Technology KoganeiTokyo 184-8795Japan

Downward transport of stratospheric air into the troposphere(identified as stratospheric intrusions)could potentially modify the radiation budget and chemical of the Earth's surface *** the highest and largest plateau on earth,the Tibetan Plateau including the Himalayas couples to global climate,and has attracted widespread attention due to rapid warming and cryospheric *** studies recognized strong stratospheric intrusions in the Himalayas but are poorly understood due to limited direct evidences and the complexity of the meteorological dynamics of the third ***^(35)S is a radioactive isotope predominately produced in the lower stratosphere and has been demonstrated as a sensitive chemical tracer to detect stratospherically sourced air mass in the planetary boundary ***,we report 6-month(April–September 2018)observation of^(35)S in atmospheric sulfate aerosols(^(35)SO_(4)^(2-))collected from a remote site in the Himalayas to reveal the stratospheric intrusion phenomenon as well as its potential impacts in this *** the sampling campaign,the^(35)SO_(4)^(2-)concentrations show an average of 1,070±980 atoms/m^(3).In springtime,the average is 1,620±730 atoms/m^(3),significantly higher than the global existing data measured so *** significant enrichments of^(35)SO_(4)^(2-)measured in this study verified the hypothesis that the Himalayas is a global hot spot of stratospheric intrusions,especially during the springtime as a consequence of its unique geology and atmospheric *** combined with the ancillary evidences,e.g.,oxygen-17 anomaly in sulfate and modeling results,we found that the stratospheric intrusions have a profound impact on the surface ozone concentrations over the study region,and potentially have the ability to constrain how the mechanisms of sulfate oxidation are affected by a change in plateau atmospheric properties and *** study provides new observational constraints on stra

关键词： Himalayas Stratospheric intrusions Cosmogenic^(35)SO_(4)^(2-) Ozone Atmospheric oxidation