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Earth and Planetary Physics 2025年第1期9卷 159-170页

作者： AoJun Ren Jiang yu Jing Wang ZuZheng chen XiaoMan Liu Planetary Environmental and Astrobiological Research Laboratory(PEARL) School of Atmospheric SciencesSun Yat-sen UniversityZhuhai Guangdong 519000China

Theoretical analysis has demonstrated that the dispersion relation of chorus waves plays an essential role in the resonant interaction and energy transformation between the waves and magnetospheric *** quantitative analyses often simplified the chorus dispersion relation by using the cold plasma ***,the applicability of the cold plasma assumption is doubtful,especially during geomagnetic *** here present a systematic statistical analysis on the validity of the cold plasma dispersion relation of chorus waves based on observations from the Van Allen Probes over the period from 2012 to *** statistical results show that the observed magnetic field intensities deviate substantially from those calculated from the cold plasma dispersion relation and that they become more pronounced with an increase in geomagnetic activity or a decrease in background plasma *** region with large deviations is mainly concentrated in the nightside and expands in both the radial and azimuthal directions as the geomagnetic activity increases or the background plasma density *** addition,the bounce-averaged electron scattering rates are computed by using the observed and cold plasma dispersion relation of chorus *** with usage of the cold plasma dispersion relation,usage of the observed dispersion relation considerably lowers the minimum resonant energy of electrons and lowers the scattering rates of electrons above tens of kiloelectronvolts but enhances those ***,these differences are more pronounced with the enhancement of geomagnetic activity or the decrease in background plasma density.

关键词： chorus waves cold plasma approximation dispersion relations scattering rates

谷氨酰胺对饥饿大鼠内毒素移位和肠黏膜免疫功能的影响

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世界华人消化杂志 2006年第20期14卷 1982-1986页

作者：张小平程爱国陈玉红华北煤炭医学院附属医院麻醉科河北省唐山市063000 华北煤炭医学院附属医院骨外科河北省唐山市063000 华北煤炭医学院附属医院骨外科研究生河北省唐山市063000

目的：探讨饥饿后大鼠肠黏膜形态学结构的变化规律,并动态观察GLN肠内补充对饥饿大鼠内毒素移位和肠黏膜免疫功能的影响.方法：采用饥饿大鼠模型,将90只3月龄♂SD大鼠随机分为正常对照组N：(给予正常饮食n =10)、饥饿组A(n=40)、谷氨酰... 详细信息

目的：探讨饥饿后大鼠肠黏膜形态学结构的变化规律,并动态观察GLN肠内补充对饥饿大鼠内毒素移位和肠黏膜免疫功能的影响.方法：采用饥饿大鼠模型,将90只3月龄♂SD大鼠随机分为正常对照组N：(给予正常饮食n =10)、饥饿组A(n=40)、谷氨酰胺组B(n= 40)3个大组,分别于饥饿后3,5,7,9d,取门静脉血测血浆内毒素的变化,在光镜下观察肠组织的组织形态学改变,利用免疫组化技术检测肠黏膜组织中SIgA的表达和CD4^+、CD8^+T细胞的数量.结果：A组大鼠饥饿后,3d可见小肠黏膜明显萎缩,绒毛变短、变稀.部分黏膜上皮细胞变性、坏死、脱落,绒毛横径增宽,高度缩短；至饥饿后9d上述变化更加明显.B组在饥饿后3d较同时间点A组肠黏膜损伤有明显的改善,小肠的黏膜厚度、绒毛数量、高度增加,至饥饿后5d基本恢复至N组水平.随着饥饿时间的延长小肠黏膜再次出现黏膜萎缩、绒毛变短、变稀,黏膜上皮细胞变性、坏死、脱落.但明显轻于同时间点的A组.饥饿后各时间点血浆内毒素与N组相比明显升高,A,B组均在饥饿后7d达到高峰,B组在饥饿后3,5,7,9d较A组降低且有非常显著性差异(322.4±65.1,389.4±32.6,464.4±76.6,413.7±67.2EU/L vs 527.1±74.9,546.3±65.7,623.9±85.9,587.5±140.8EU/L,均P＜0.01).与N组比较,A组大鼠肠黏膜SIgA及CD4^+,CD8^+T细胞数量明显减少,差异有显著性性(P＜0.05,P＜0.01).补充GLN后,SIgA及CD4^+,CD8^+T细胞数量明显升高,B组与A组比较差异非常显著(P＜0.01).结论：大鼠饥饿后早期确有肠黏膜组织结构受损,发生内毒素移位,同时伴有肠黏膜免疫学屏障受损.早期给予GLN可减轻肠黏膜的受损,明显降低内毒素移位,增强肠黏膜的免疫功能发挥肠黏膜的保护作用.

关键词：饥饿谷氨酰胺内毒素移位肠黏膜屏障

Preparation of Modified Composite Nanofiltration Membrane Synergistically Using Carboxylic Multi- walled Carbon Nanotube and β-cyclodextrin

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 232-239页

作者： LIU Peng MAO Junpeng FANG Yanfeng yu yunwu chen Changxiu TANG Ning WAN Ye GU Yaxin LIU yunxue WANG Lihua School of Materials Science and Engineering Shenyang Jianzhu UniversityShenyang 110168China

A new modified blend ultrafiltration(UF)membrane with good hydrophilicity,high porosity and excellent anti-fouling performance was developed by using carboxylic multi-walled carbon nanotube(CMWCNT)as casting solution ***,a composite nanofiltration(NF)membrane with large water flux and good retention rate was fabricated by using the PVDF/CMWCNT blend UF membrane as the substrate,and polyvinyl alcohol(PVA),β-cyclodextrin(β-CD)and polyethylenimine(PEI)as the coating *** results show that with the appropriate addition of CMWCNT in the casting solution,the surface roughness,porosity and recovery rate of the PVDF/CMWCNT blend UF membrane is obviously *** water flux of blend UF membrane is significantly improved when the CMWCNT content increases from 0 wt%to 0.2 wt%.The water flux of blend UF membrane with 0.2 wt%CMWCNT is 162.7 L/(m^(2)·h),which is 44.3%higher than that of the pure PVDF ***β-CD content is 0.8 wt%,the retention rate of Congo red by PVDF/CMWCNT/β-CD composite NF membrane reaches 98.7%,which is 28.3%higher than that of single PVA/PEI modified *** research will provide a new idea and simple method for developing novel high-performance composite NF membranes.

关键词： CMWCNT cyclodextrin nanofiltration membrane

锌诱导的蛋白合成增加可抵抗链佐霉素所致的胰岛细胞损伤

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生理学报 1989年第4期41卷 375-380页

作者：屠亚红朱文玉李承红北京医科大学基础医学研究所消化生殖生理研究室

本工作在离体细胞水平观察ZnGl_2对链佐霉素(STZ)诱发的胰岛β细胞损伤的保护作用,并分析其可能的作用机制。结果如下:向培养的胰岛细胞中加入生理盐水和STZ(3mmol/L),孵育12h后,活细胞数由实验前的70万个/ml降至43.93±1.16万个/ml;将Z... 详细信息

本工作在离体细胞水平观察ZnGl_2对链佐霉素(STZ)诱发的胰岛β细胞损伤的保护作用,并分析其可能的作用机制。结果如下:向培养的胰岛细胞中加入生理盐水和STZ(3mmol/L),孵育12h后,活细胞数由实验前的70万个/ml降至43.93±1.16万个/ml;将ZnCl_2(0.25、0.5、1.0mmol/L)和相同剂量的STZ一同加入细胞,可不同程度地缓解STZ对胰岛的破坏作用,在含不同浓度ZnCl_2的培养液中活细胞数分别恢复至47.39±0.88,58.06±2.29,67.72±1.48万个/ml,与STZ破坏组相比,分别具有显著差异,并呈量效关系。在给予ZnCl_2(1.0mmol/L)的同时,向细胞中加入蛋白合成抑制剂亚胺环已酮(100μg/ml),可翻转ZnCl_2的作用,活细胞数由63.17±2.15万个/ml,又重新减至45.77±0.76万个/ml。单独加亚胺环己酮对活细胞数目无明显影响。用~3H-亮氨酸掺入实验观察ZnCl_2对胰岛细胞蛋白合成的影响发现,单独给予ZnCl_2(1.0mmol/L)仅使蛋白合成轻微增加,与盐水对照组无显著差异;在给ZnCl_2的同时加入STZ,则蛋白合成明显增多,保护组与STZ破坏组比较,差异显著。上述结果表明,增加细胞内蛋白合成,以加强细胞自身对外来损伤的修复力,可能是ZnCl_2保护胰岛细胞的机制之一。

关键词：胰岛细胞锌链佐霉素

计算机辅助基因克隆的Oracle数据库系统

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吉林大学学报（理学版） 2002年第2期40卷 204-208页

作者：王伟王玉宏陈宇李惟吉林大学生命科学学院长春130023

计算机辅助基因克隆的 Oracle数据库系统利用 Swiss Prot数据库获取已知的基因 ,用Blast程序从人类基因组序列中搜索与该基因同源的染色体 DNA片段 ,并将 Blast返回的结果存储于 Oracle数据库 .使用者选择所感兴趣的 Blast结果 ,用本文... 详细信息

计算机辅助基因克隆的 Oracle数据库系统利用 Swiss Prot数据库获取已知的基因 ,用Blast程序从人类基因组序列中搜索与该基因同源的染色体 DNA片段 ,并将 Blast返回的结果存储于 Oracle数据库 .使用者选择所感兴趣的 Blast结果 ,用本文所提供的算法及前端程序合成这些 DNA片段。

关键词： Oracle数据库系统 GenBank数据库 SwissProt JAVA数据库生物信息学计算机辅助基因克隆 Blas程序

Fisl phosphorylation by Met promotes mitochondrial fission and hepatocellular carcinoma metastasis

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Signal Transduction and Targeted Therapy 2022年第1期7卷 200-214页

作者： Yan yu Xiao-Dan Peng Xiao-Jun Qian Kai-Ming Zhang Xiang Huang yu-hong chen yun-Tian Li Gong-Kan Feng Hai-Liang Zhang Xue-Lian Xu Shun Li Xuan Li Jia Mai Zhi-Ling Li yun Huangj Dong Yang Li-Huan Zhou Zhuo-Yan Zhong Jun-Dong Li Rong Deng Xiao-Feng Zhu State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer MedicineGuangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapySun Yat-Sen University Cancer CenterGuangzhou 510060China The First Affiliated Hospital of USTC Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui 230001P.R.China Department of Medical Bioinformatics Zhongshan School of MedicineSun Yat-Sen UniversityGuangzhou 510080China fe First Affiliated Hospital of Xinxiang Medical College WeihuiHenan 453100China Department of Gynecological Oncology Sun Yat-Sen University Cancer CenterGuangzhou 510060China

Met tyrosine kinase,a receptor for a hepatocyte growth factor(HGF),plays a critical role in tumor growth,metastasis,and drug *** are highly dynamic and undergo fission and fusion to maintain a functional mitochondrial *** mitochondrial dynamics are responsible for the progression and metastasis of many ***,using structured illumination microscopy(SIM)and high spatial and temporal resolution live cell imaging,we identified mitochondrial trafficking of receptor tyrosine kinase *** ton tacts betwee n activated Met kinase and mitochondria formed dramatically,and an intact HGF/Met axis was necessary for dysregulated mitochondrial fission and cancer cell ***,we found that Met directly phosphorylated outer mitochondrial membrane protein Fis1 at Tyr38(Fisl pY38).Fisl pY38 promoted mitochondrial fission by recruiting the mitochondrial fission GTPase dynamin-related protein・1(Drp1)to *** mitochondria fueled actin filament remodeling and lamellipodia or invadopodia formation to facilitate cell metastasis in hepatocellular carcinoma(HCC)cells both in vitro and in *** findings reveal a novel and noncanonical pathway of Met receptor tyrosine kinase in the regulation of mitochondrial activities,which may provide a therapeutic target for metastatic HCC.

关键词： metastasis hepatocellular illumination

Thermally triggered topological polymerization in diacetylene-functionalized covalent organic framework toward enhanced memristive properties

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Science China Chemistry 2025年

作者： Panke Zhou yuxing Huang Ziyue yu Cong Zhang Qian chen Yiping Li Chao Lin Xiong chen State Key Laboratory of Photocatalysis on Energy and Environment Key Laboratory of Advanced Carbon-Based Functional MaterialsCollege of Chemistry Fuzhou University

The development of stimuli-responsive switching memory devices and the elucidation of their switching mechanisms in specific environments are crucial for advancing the field of molecular electronics. Herein, we propose two distinct two-dimensional covalent organic frameworks (COFs), namely Py-EDA and Py-BDA, incorporating acetylene (-C≡C-) or diacetylene(-C≡C-C≡C-) moieties, respectively, targeting fabricate memory devices exhibiting stimuli-responsive switching *** findings demonstrate that the incorporation of acetylene units effectively modulates the electronic band structure and enhances the degree ofπ-conjugation, resulting in devices that exhibit typical bipolar nonvolatile memory performance. Notably,upon thermal treatment, the memory behavior of the ITO/Py-BDA/Ag device transitions to a write-once-read-many-times(WORM) mode, displaying decreased SET voltage, increased ON/OFF current ratio, and remarkable retention reliability and cycle stability. This switching behavior is attributed to the occurrence of interlayer solid-state topological polymerization at 350℃, leading to the transformation of diacetylene columnar arrays into enyne chains within Py-BDA, thereby further promoting interlayer charge transfer and separation.

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Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang chen Yongyue Zhuang Yanxin Qiao yu Zhang Aihua yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

Skeletal muscle-specific Bambi deletion induces hypertrophy and oxidative switching coupling with adipocyte thermogenesis against metabolic disorders

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Science China Life Sciences 2025年

作者： Xiangping Yao Xudong Mai Ye Tian Yifan Liu Guanghui Jin Ze Li Shujie chen Xiaoshuang Dai Liujing Huang Zijing Fan Guihua Pan Xiaohan Pan Xiangmin Li Michael C yu Jia Sun Jingxing Ou hong chen Liwei Xie College of Life and Health Sciences Guangdong Industry Polytechnic Department of Endocrinology and Metabolism Zhujiang Hospital Southern Medical University State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Open Laboratory of Applied MicrobiologyInstitute of Microbiology Guangdong Academy of Sciences Institute of Aging Research Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics School of Medical Technology Guangdong Medical University Department of Hepatic Surgery and Liver transplantation Center of the Third Affiliated Hospital Organ Transplantation Institute Sun Yat-sen University Organ Transplantation Research Center of Guangdong ProvinceGuangdong province engineering laboratory for transplantation medicine Guangdong Provincial Key Laboratory of Liver Disease Research School of Public Health Xinxiang Medical University BGI Institute of Applied Agriculture BGI-Shenzhen Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Department of Biological Sciences State University of New York at Buffalo Department of Internal Medicine Shunde Women and Children's Hospital (Maternity and Child Healthcare Hospital of Shunde Foshan) Guangdong Medical University

Skeletal muscle plays a significant role in both local and systemic energy metabolism. The current investigation aims to explore the role of the Bambi gene in skeletal muscle, focusing on its implications for muscle hypertrophy and systemic metabolism. We hypothesize that skeletal muscle-specific deletion of Bambi induces muscle hypertrophy, improves metabolic performance, and activates thermogenic adipocytes via the reprogramming of progenitor of i WAT, offering potential therapeutic strategies for metabolic syndromes. Leveraging the Chromatin immunoprecipitation(ChIP)-seq and bioinformatics analysis, Bambi gene is shown to be a direct target of HIF2α, which is further confirmed by ChIP-qPCR and promoter luciferase assay. Skeletal muscle-specific Bambi deletion led to significant muscle hypertrophy and improved metabolic parameters, even under high-fat diet conditions. This deletion induced metabolic reprogramming of stromal vascular fractions(SVFs) into thermogenic adipocytes, contributing to systemic metabolic improvements, potentially through the secretory ***, mice with skeletal muscle-specific Bambi deletion demonstrate resistance to high-fat diet-induced metabolic disorders, highlighting a potential therapeutic pathway for metabolic syndrome management. Thus, skeletal muscle-specific deletion of Bambi triggers muscle growth, enhances metabolic performance, and activates thermogenic adipocytes. These findings suggest Bambi as a novel therapeutic target for metabolic syndromes, providing new insights into the interaction between muscle hypertrophy and systemic metabolic improvement. The study underscores the potential of manipulating muscle physiology to regulate whole-body metabolism, offering a novel perspective on treating metabolic disorders.

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