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通辽市大学生饮食行为与体质量指数分析

中国学校卫生 2009年第6期30卷 493-494页

作者：李华夏春丽吉利利内蒙古民族大学生命科学院通辽028042

目的了解通辽市大学生饮食习惯、膳食结构和体质状况,为改进学校膳食管理和培养学生良好的饮食习惯提供依据。方法随机抽取内蒙古民族大学和通辽职业学院2006级大学生113名,采用问卷调查、24h膳食回顾和体质量指数计算相结合的方法进行... 详细信息

目的了解通辽市大学生饮食习惯、膳食结构和体质状况,为改进学校膳食管理和培养学生良好的饮食习惯提供依据。方法随机抽取内蒙古民族大学和通辽职业学院2006级大学生113名,采用问卷调查、24h膳食回顾和体质量指数计算相结合的方法进行膳食状况调查和身高、体重测量。结果通辽市男、女大学生不常吃早餐的比例分别为18.4%和17.2%,50.0%以上的学生坚持常喝牛奶,女生常常晚餐节食的比例高达46.9%。男、女大学生谷类、畜禽肉类摄入量均明显高于建议量,摄入量与建议量的比值男生分别为157.1%和118.7%,女生分别为116.7%和122.0%;水产品、水果、蛋类、蔬菜、豆类及豆制品摄入量均低于建议量,其中男、女生水产品摄入量仅为建议量的16.0%和14.7%。男、女生平均体质量指数均在正常范围之内,但超重或肥胖以及消瘦或营养不良均占有一定的比例,且后者比例高于前者。结论男、女大学生的膳食结构、膳食习惯和体质状况均存在一定的问题,需要学校有关部门和学生共同采取措施予以解决。

关键词：饮食习惯人体质量指数膳食调查学生

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从恒天然事件探讨我国食品召回制现状

食品工业 2014年第8期35卷 225-227页

作者：夏春丽卢日刚广西中医药大学南宁530001 广西壮族自治区食品药品检验所南宁530001

据中国餐饮网报道,2013年8月,恒天然公司在一份声明中说,在其旗下一个工厂去年5月生产的3个批次乳清蛋白浓缩物中检测含有肉毒。"肉毒中毒门"事件爆发,许多品牌的奶粉受到影响。当时,恒天然表示,该问题的出现与生产环境的污染和管道清... 详细信息

据中国餐饮网报道,2013年8月,恒天然公司在一份声明中说,在其旗下一个工厂去年5月生产的3个批次乳清蛋白浓缩物中检测含有肉毒。"肉毒中毒门"事件爆发,许多品牌的奶粉受到影响。当时,恒天然表示,该问题的出现与生产环境的污染和管道清洁不彻底有关。8月29日,新西兰初级产业部发表了一份声明,8月初,恒天然奶粉污染事件是一个假警报。最终确认测试,恒天然3批细菌乳清蛋白粉对普通肉毒梭状杆菌,而不是高致病性。恒天然奶粉事件持续发酵,因为病原体严重,涉及许多企业,在社会引起广泛关注。此外,关注此事件进展的同时,更多的消费者期盼着食品召回制能在我国范围内尽快的执行。

关键词：食品召回美国监管措施

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拱桥汽车设计荷载标准分析

交通运输工程学报 2017年第1期17卷 53-61页

作者：胡大琳惠小记夏春梅李影张航长安大学公路学院陕西西安710064 江苏省交通技师学院道路桥梁工程系江苏镇江212028 威斯康星大学麦迪逊分校土木与环境工程系威斯康星麦迪逊53706

分析了超载车辆对桥梁的影响与现行规范即《公路桥涵设计通用规范》(JTG D60—2015)中的汽车荷载标准对公路上运营车辆荷载的适用性,研究了广深高速公路车辆荷载的动态称重系统(WIM)实测数据,利用Monte Carlo方法模拟随机车辆荷载和随... 详细信息

分析了超载车辆对桥梁的影响与现行规范即《公路桥涵设计通用规范》(JTG D60—2015)中的汽车荷载标准对公路上运营车辆荷载的适用性,研究了广深高速公路车辆荷载的动态称重系统(WIM)实测数据,利用Monte Carlo方法模拟随机车辆荷载和随机车辆间距,编制了随机车队加载效应计算程序,计算了无铰拱跨中和拱脚截面的弯矩效应,采用极大值分布原理求得荷载效应在设计基准期内的标准值,给出基于WIM实测数据的汽车荷载标准模型,并与现行规范中的设计荷载标准进行对比。计算结果表明:推荐车道荷载作用效应对实测荷载效应包容性和适用性良好,拱桥跨中弯矩误差小于7%,当跨径为25~65、110、120m时,拱脚弯矩误差为5%~11%,其余跨径时的拱脚弯矩误差小于5%;基于广深高速公路实测荷载推定的荷载标准与现行规范中公路-Ⅰ级车道荷载在无铰拱上产生弯矩效应的比值为1.24~2.18,平均比值为1.80,说明广深高速交通量大,车辆超载超限严重,根据实测车辆荷载推断的荷载标准与现行规范荷载标准出现了较大偏差,广深高速桥梁设计荷载标准应在现有规范基础上适当提高。

关键词：桥梁工程拱桥超载随机车队荷载效应荷载标准

CN bond orientation in metal carbonitride endofullerenes：A density functional theory study

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Chinese Physics B 2017年第12期26卷 210-215页

作者：张竹霞张勇薛文华贾伟张彩丽李春霞崔鹏 Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education Taiyuan University of Technology Taiyuan 030024 China Research Center of Advanced Materials Science and Technology Taiyuan University of Technology Taiyuan 030024 China Collaborative Innovation Center for Shanxi Advanced Permanent Magnetic Materials and Technology Linfen 041004 China School of Electronic Information Engineering Yangtze Normal University Chongqing 408100 China School of Information Guizhou University of Finance and Economics Guiyang 550025 China

The geometric and electronic structures of scandium carbonitride endofullerene Sc3CN@C2n （2n=68, 78, 80, 82, and 84） and Sc（Y）NC@C76 have been systematically investigated to identify the preferred position of internal C and N atoms by density functional theory （DFT） calculations combined with statistical mechanics treatments. The CN bond orientation can generally be inferred from the molecule stability and electronic configuration. It is found that Sc3CN@C2n molecules have the most stable structure with C atom locating at the center of Sc3CN cluster. The CN bond has trivalent form of[CN]3- and connects with adjacent three Sc atoms tightly. However, in Sc（Y）NC@C76 with[NC]-, the N atom always resides in the center of the whole molecule. In addition, the stability of Sc3CN@C2n has been further compared in terms of the organization of the corresponding molecular energy level. The structural differences between Sc3CN@C2n and Sc3NC@C2n are highlighted by their respected infrared spectra.

关键词： geometric and electronic structures metal carbonitride endofullerenes theoretical calculations CN bond orientation

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淋巴细胞性垂体炎五例临床诊疗分析

中国全科医学 2017年第2期20卷 224-227页

作者：王志芳崔西春张丽侠栗夏莲郑丽丽郑州大学第一附属医院内分泌科河南省郑州市450052 郑州大学第一附属医院小儿外科河南省郑州市450052

目的通过分析淋巴细胞性垂体炎(Ly H)患者临床资料探讨其诊治方法,提高对其临床认识和诊治水平。方法选取2015年郑州大学第一附属医院临床诊断为Ly H患者5例,收集临床表现、内分泌及影像学检查结果、治疗、转归等临床资料。结果 5例患... 详细信息

目的通过分析淋巴细胞性垂体炎(Ly H)患者临床资料探讨其诊治方法,提高对其临床认识和诊治水平。方法选取2015年郑州大学第一附属医院临床诊断为Ly H患者5例,收集临床表现、内分泌及影像学检查结果、治疗、转归等临床资料。结果 5例患者中男3例,女2例;年龄17~41岁;病程7 d^9年。4例患者出现多饮、多尿,2例出现恶心、呕吐,2例出现性欲减退,1例出现闭经,1例出现头晕、头痛。2例患者促肾上腺皮质激素-皮质醇(ACTH-COR)水平正常,3例ACTH-COR水平降低;2例患者泌乳素(PRL)水平升高,2例PRL水平降低,1例PRL水平正常;2例患者促黄体生成素(LH)、卵泡刺激素(FSH)水平正常,3例LH、FSH水平降低;2例患者甲状腺功能减退。垂体磁共振成像(MRI)示5例患者垂体柄增粗,3例垂体弥漫性增大,2例累及视交叉,2例神经垂体高信号消失。4例多饮、多尿患者行禁水加压试验均符合中枢性尿崩症,其中2例患者垂体MRI示神经垂体高信号存在。患者均给予不同剂量和疗程糖皮质激素治疗,甲状腺功能减退者给予左甲状腺素钠片,中枢性尿崩症患者给予醋酸去氨加压素片。患者症状均有不同程度的缓解,但均未恢复至正常,1例出现股骨头坏死。结论 Ly H主要影像学特点为垂体柄增粗,MRI是该疾病诊断和评估治疗效果简单、有效的方法,中枢性尿崩症有助于与垂体瘤鉴别,糖皮质激素治疗对该疾病有效,但应警惕其不良反应。

关键词：垂体疾病垂体柄尿崩症,神经性磁共振成像糖皮质激素类

Perilipin-2 mediates ferroptosis in oligodendrocyte progenitor cells and myelin injury after ischemic stroke

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Neural Regeneration Research 2025年第7期20卷 2015-2028页

作者： Jian Yang Jiang Wu Xueshun Xie Pengfei xia Jinxin Lu Jiale liu Lei Bai xiang li Zhengquan Yu Haiying li Department of Neurosurgery&Brain and Nerve Research Laboratory The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Stroke Research Soochow UniversitySuzhouJiangsu ProvinceChina

Differentiation of oligodendrocyte progenitor cells into mature myelin-forming oligodendrocytes contributes to *** of remyelination due to oligodendrocyte progenitor cell death can result in severe nerve *** is an iron-dependent form of regulated cell death caused by membrane rupture induced by lipid peroxidation,and plays an important role in the pathological process of ischemic ***,there are few studies on oligodendrocyte progenitor cell *** analyzed transcriptome sequencing data from GEO databases and identified a role of ferroptosis in oligodendrocyte progenitor cell death and myelin injury after cerebral *** analysis suggested that perilipin-2(PliN2)was involved in oligodendrocyte progenitor cell ***2 is a lipid storage protein and a marker of hypoxia-sensitive lipid droplet *** further investigation,we established a mouse model of cerebral ischemia/*** found significant myelin damage after cerebral ischemia,as well as oligodendrocyte progenitor cell death and increased lipid peroxidation levels around the infarct *** ferroptosis inhibitor,ferrostatin-1,rescued oligodendrocyte progenitor cell death and subsequent myelin *** also found increased PliN2 levels in the peri-infarct area that co-localized with oligodendrocyte progenitor ***2 knockdown rescued demyelination and improved neurological *** findings suggest that targeting PliN2 to regulate oligodendrocyte progenitor cell ferroptosis may be a potential therapeutic strategy for rescuing myelin damage after cerebral ischemia.

关键词： bioinformatics bulk RNA sequencing ferroptosis ischemic stroke myelin injury oligodendrocyte progenitor cell perilipin-2 single-cell RNA sequencing

Deciphering Water Oxidation Catalysts:The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

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Nano-Micro Letters 2025年第3期17卷 340-354页

作者： li An Jianyi li Yuanmiao Sun Jiamin Zhu Justin Zhu Yeow Seow Hong Zhang Nan Zhang Pinxian Xi * Zhichuan JXu chun‑Hua Yan State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑life lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang li Wen‑xia Su Jia‑Min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous li deposition and highly reversible li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous li+flux lithium metal battery

Study on Power-enhanced Technology of Global Navigation Satellites

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Study on Power-enhanced Technology of Global Navigation Sate...