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功能磁共振对经颈静脉肝内门体分流术术前轻微肝性脑病诊断的研究进展

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中华介入放射学电子杂志 2024年第2期12卷 171-175页

作者：邵小桐张琦昱马惠军徐蕾赵晓慧牛洪涛河北医科大学放射医学教研室河北石家庄050000 承德医学院放射医学教研室河北承德067000 河北省秦皇岛市第一医院介入治疗科河北秦皇岛066000

肝性脑病是经颈静脉肝内门体分流术的并发症之一,常会恶化患者的生活质量和身体状况。轻微肝性脑病是其早期阶段,常在术前就已经出现,但是目前尚缺乏特异度及灵敏度均较高的诊断方法。文章旨在综述经颈静脉肝内门体分流术术前发生轻微... 详细信息

肝性脑病是经颈静脉肝内门体分流术的并发症之一,常会恶化患者的生活质量和身体状况。轻微肝性脑病是其早期阶段,常在术前就已经出现,但是目前尚缺乏特异度及灵敏度均较高的诊断方法。文章旨在综述经颈静脉肝内门体分流术术前发生轻微肝性脑病诊断学方法,以期提高临床早期对肝性脑病的发现概率。

关键词：经颈静脉肝内门体分流肝性脑病轻微肝性脑病合成磁共振诊断

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晚期心力衰竭患者安宁疗护的研究进展

临床医学研究与实践 2024年第21期9卷 181-185页

作者：陈文博张奇钰牛少琼李雪阳刘瑞卿李转珍河南科技大学护理学院河南洛阳471003 吉林大学第一医院吉林长春130012 河南科技大学第一附属医院河南洛阳471003

心力衰竭是威胁全球公众健康的主要疾病之一,且随着人口老龄化加剧,该病的患病人数逐年增加,约有5%~10%的心力衰竭患者将进入晚期心力衰竭阶段,出现一系列顽固性症状导致生活质量大大降低。安宁疗护对缓解晚期心力衰竭患者的身心症状、... 详细信息

心力衰竭是威胁全球公众健康的主要疾病之一,且随着人口老龄化加剧,该病的患病人数逐年增加,约有5%~10%的心力衰竭患者将进入晚期心力衰竭阶段,出现一系列顽固性症状导致生活质量大大降低。安宁疗护对缓解晚期心力衰竭患者的身心症状、提高生存质量有着重要意义,然而实际接受安宁疗护的患者较少。本文综述晚期心力衰竭患者安宁疗护的需求、实施模式、影响因素及促进措施,以期为我国开展晚期心力衰竭患者安宁疗护提供参考。

关键词：晚期心力衰竭安宁疗护生存质量

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海口市12所中小学校教学环境卫生现状调查

中国初级卫生保健 2024年第2期38卷 93-95页

作者：杨海霞牛永茂江祈雨裴正春曾小蝶黄婧王晓花海口市疾病预防控制中心海南海口570311

目的:了解海口市中小学校教学环境卫生状况,促进教学卫生条件改善。方法:2021年9月在海口市随机抽取12所中小学校的72间教室,按照《学校卫生综合评价》(GB/T 18205-2012)等标准进行教学环境卫生监测。结果:72间教室的黑板面平均照度合... 详细信息

目的:了解海口市中小学校教学环境卫生状况,促进教学卫生条件改善。方法:2021年9月在海口市随机抽取12所中小学校的72间教室,按照《学校卫生综合评价》(GB/T 18205-2012)等标准进行教学环境卫生监测。结果:72间教室的黑板面平均照度合格率最低,仅为1.4%;黑板反射比、课桌面平均照度、教室人均面积合格率分别为19.4%、26.4%和34.7%;课椅分配符合率为53.3%,高于课桌(48.5%);噪声合格率为68.1%;黑板尺寸、黑板面照度均匀度和课桌面照度均匀度合格率较高,分别为70.8%、93.1%和88.9%。市区教室黑板面照度均匀度、课桌面平均照度和课桌面照度均匀度均高于郊区教室,郊区教室课桌和课椅分配符合率均高于市区教室,差异有统计学意义(χ^(2)值分别为10.746、9.152、5.080、41.932和21.112,P值均<0.05)。结论:海口市抽样学校教室、宿舍、食堂、厕所等硬件设施建设较好,配套比较齐全,但还存在教学环境卫生未达标的情况,黑板面平均照度、黑板反射比、课桌面平均照度、教室人均面积、课桌椅分配符合率等指标合格率较低,应引起相关部门的重视,加强学校卫生标准宣传,改进教学环境卫生,为学生创造良好的学习生活环境。

关键词：中小学校教学环境卫生调查

Integration of rhythmic metabolome and transcriptome provides insights into the transmission of rhythmic fluctuations and temporal diversity of metabolism in rice

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Science China(Life Sciences) 2022年第9期65卷 1794-1810页

作者： Junjie Zhou Chengyuan Liu qiyu Chen Ling Liu Shuying niu Ridong Chen Kang Li Yangyang Sun Yuheng Shi Chenkun Yang Shuangqian Shen Yufei Li Junwei Xing Honglun Yuan Xianqing Liu Chuanying Fang Alisdair R.Fernie Jie Luo College of Tropical Crops Hainan UniversityHaikou 570288China National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research(Wuhan) Huazhong Agricultural UniversityWuhan 430070China Sanya Nanfan Research Institute of Hainan University Hainan Yazhou Bay Seed LaboratorySanya 572025China Max-Planck-Institute of Molecular Plant Physiology Potsdam-Golm 144776Germany Center of Plant System Biology and Biotechnology Plovdiv 4000Bulgaria

Various aspects of the organisms adapt to cyclically changing environmental conditions via transcriptional ***,the role of rhythmicity in altering the global aspects of metabolism is poorly ***,we subjected four rice(Oryza sativa)varieties to a range of metabolic profiles and RNA-seq to investigate the temporal relationships of rhythm between transcription and *** than 40%of the rhythmic genes and a quarter of metabolites conservatively oscillated across four rice *** with the metabolome,the transcriptome was more strongly regulated by rhythm;however,the rhythm of metabolites had an obvious opposite trend between day and *** association analysis,the time delay of rhythmic transmission from the transcript to the metabolite level was~4 h under long-day conditions,although the transmission was nearly synchronous for carbohydrate and nucleotide *** rhythmic accumulation of metabolites maintained highly coordinated temporal relationships in the metabolic network,whereas the correlation of some rhythmic metabolites,such as branched-chain amino acids(BCAAs),was significantly different *** further demonstrated that the cumulative diversity of BCAAs was due to the differential expression of branched-chain aminotransferase 2 at *** research reveals the flexible pattern of rice metabolic rhythm existing with conservation and diversity.

关键词： Oryza sativa diurnal cycle metabolome time delay rhythmic diversity

Edible mushrooms as a potent therapeutics of subclinical thyroid dysfunction among adults,especially in obese individuals:a prospective cohort study

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Food Science and Human Wellness 2023年第1期12卷 295-302页

作者： Juanjuan Zhang Sabina Rayamajhi Amrish Thapa Ge Meng Qing Zhang Li Liu Hongmei Wu Yeqing Gu Shunming Zhang Tingjing Zhang Xuena Wang Zhixia Cao Jun Dong Xiaoxi Zheng Xu Zhang Xinrong Dong Xing Wang Shaomei Sun Ming Zhou qiyu Jia Kun Song Kaijun niu Nutritional Epidemiology Institute and School of Public Health Tianjin Medical UniversityTianjin 300070China Department of Toxicology and Sanitary Chemistry School of Public HealthTianjin Medical UniversityTianjin 300070China Health Management Centre Tianjin Medical University General HospitalTianjin 300070China Nutrition and Radiation Epidemiology Research Center Institute of Radiation MedicineChinese Academy of Medical Sciences&Peking Union Medical CollegeTianjin 300192China Tianjin Key Laboratory of Environment Nutrition and Public HealthTianjin 300070China Center for International Collaborative Research on Environment Nutrition and Public HealthTianjin 300070China

Background:Mushrooms are a good source of many nutrients which are potentially beneficial for chronic *** speculated that due to its abundant nutrients edible mushrooms might have a beneficial effect on the prevention of subclinical thyroid dysfunction(SCTD).Therefore,we designed a large-scale cohort study to examine whether mushrooms consumption is a protective factor for SCTD in ***:This prospective cohort study investigated 6631 participants(mean age:(45.0±10.2)years;55.1%men).Edible mushrooms consumption was measured at baseline using a validated food frequency *** was defined as abnormal serum thyroid-stimulating hormone levels and normal free *** proportional hazards regression models were used to examine the association of edible mushrooms consumption with incident ***:During follow-up period,a total of 262 new cases of SCTD were identified,the incidence rate of subclinical hypothyroidism was 8.9/1000 person-years and subclinical hyperthyroidism was 7.2/1000 *** adjusting potential confounding factors,the multivariable hazard ratios(95%confidence intervals)for subclinical hypothyroidism were 1.00(reference)for almost never,0.53(0.29,0.97)for 1-3 times/week and 0.30(0.10,0.87)for≥4 times/week(P for trend=0.02).It also showed edible mushrooms consumption was inversely associated with subclinical hypothyroidism in obese individuals but not non-obese individuals,the final hazard ratios(95%confidence intervals)were 0.14(0.03,0.73)(P for trend<0.01).Conclusions:This population-based prospective cohort study has firstly demonstrated that higher edible mushrooms consumption was significantly associated with lower incidence of subclinical hypothyroidism among general adult population,especially in obese individuals.

关键词： Edible mushrooms Subclinical thyroid dysfunction Obese individuals Cohort study

Boosting reversible anionic redox reaction with Li/Cu dual honeycomb centers

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eScience 2023年第5期3卷 93-104页

作者： Xiaohui Rong Dongdong Xiao Qinghao Li Yaoshen niu Feixiang Ding Xueyan Hou qiyu Wang Juping Xu Chenglong Zhao Dong Zhou Ruijuan Xiao Xiqian Yu Wen Yin Lin Gu Hong Li Xuejie Huang Liquan Chen Yong-Sheng Hu Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesLaboratory for Advanced Materials&Electron MicroscopyBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100190China Yangtze River Delta Physics Research Center Co.Ltd Liyang 213300China Huairou Division Institute of PhysicsChinese Academy of SciencesBeijing 101400China Spallation Neutron Source Science Center Dongguan 523803China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Advanced Science Facilities ShenzhenGuangdong 518107PR China

The anionic redox reaction(ARR)is a promising charge contributor to improve the reversible capacity of layeredoxide cathodes for Na-ion batteries;however,some practical bottlenecks still need to be eliminated,including a low capacity retention,large voltage hysteresis,and low rate ***,we proposed a high-Na content honeycomb-ordered cathode,P2–Na_(5/6)[Li_(1/6)Cu_(1/6)Mn_(2/3)]O_(2)(P2-NLCMO),with combined cationic/anionic *** powder diffraction and X-ray diffraction of P2-NLCMO suggested P2-type stacking with rarely found P6322 *** addition,advanced spectroscopy techniques and density functional theory calculations confirmed the synergistic stabilizing relationship between the Li/Cu dual honeycomb centers,achieving fully active Cu^(3+)/Cu^(2+) redox and stabilized ARR with interactively suppressed local *** a meticulously regulated charge/discharge protocol,both the cycling and rate capability of P2-NLCMO were significantly.

关键词： Anionic redox reaction Layered-oxide cathode Honeycomb Na-ion batteries

DC-DC变换器并联系统无源控制及大信号稳定性研究

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中国电机工程学报 2022年第18期42卷 6789-6802页

作者：王勉唐芬陈麒宇吴学智牛靖凯北京交通大学国家能源主动配电网技术研发中心北京市海淀区100044 中国电力科学研究院有限公司北京市海淀区100192

由于恒功率负载的负阻特性,导致DC-DC变换器难以在期望工作点上稳定工作,从而影响变换器并联系统稳定性。针对此问题,基于欧拉–拉格朗日模型,采用互联和阻尼注入的方法,设计改进的无源控制器,实现了变换器并联系统在大信号扰动下的稳... 详细信息

由于恒功率负载的负阻特性,导致DC-DC变换器难以在期望工作点上稳定工作,从而影响变换器并联系统稳定性。针对此问题,基于欧拉–拉格朗日模型,采用互联和阻尼注入的方法,设计改进的无源控制器,实现了变换器并联系统在大信号扰动下的稳定工作,但在大信号扰动下存在稳态误差。针对该问题,采用虚拟直流电机补偿控制,为变换器提供额外的惯性和阻尼,增强并联系统在大信号扰动时的鲁棒性,提升改进无源控制器的适应性。最后仿真和实验结果表明所提控制策略在实现变换器并联系统在大信号扰动下稳定工作的同时,能有效抑制输出电压的波动和稳态误差。相较于应在并联系统中的互联和阻尼分配的无源控制(interconnection and damping assignment passivity-based control,IDA-PBC),所提控制策略具有电压超调小,调节速度快及更好的动态特性。

关键词：恒功率负载变换器并联系统无源控制大信号扰动虚拟直流电机补偿控制

不同蛋白质源饲粮对肉羊生长发育、屠宰性能以及经济效益的影响

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动物营养学报 2021年第9期33卷 5119-5130页

作者：牛明强成述儒王文义马涛崔凯杨东刁其玉甘肃农业大学动物科学技术学院兰州730070 中国农业科学院饲料研究所农业农村部饲料生物技术重点实验室北京100081 巴彦淖尔市农牧业科学研究院巴彦淖尔015000

本试验旨在研究不同蛋白质源饲粮对育肥羊生长性能、屠宰性能、肉品质以及胃肠道发育的影响。试验采用单因素试验设计,选取体重为(20.0±0.6)kg的杜寒杂交肉羊120只,随机分为5组(每组3个重复,每个重复8只羊),分别为豆粕组、棉籽粕组、... 详细信息

本试验旨在研究不同蛋白质源饲粮对育肥羊生长性能、屠宰性能、肉品质以及胃肠道发育的影响。试验采用单因素试验设计,选取体重为(20.0±0.6)kg的杜寒杂交肉羊120只,随机分为5组(每组3个重复,每个重复8只羊),分别为豆粕组、棉籽粕组、菜籽饼组、葵仁饼组以及混合饼粕(棉籽粕、菜籽饼、葵仁饼)组,配制精粗比为65∶35的饲粮。试验预试期20 d,正试期92 d,试验结束时屠宰。结果表明:1)各组之间杜寒杂交肉羊平均日增重、干物质采食量、饲料转化率无显著差异(P>0.05);2)各组之间肉羊的宰前活重、屠宰率、眼肌面积以及GR值均无显著差异(P>0.05);3)各组之间胴体肌肉pH、滴水损失、肉色无显著差异(P>0.05);4)豆粕组肉羊小肠重量显著低于菜籽饼组(P0.05);5)相对于豆粕组,棉籽粕组、菜籽饼组、葵仁饼组和混合饼粕组利润分别提高了1.87%、4.63%、9.35%和6.30%。综上所述,在肉羊育肥阶段,用棉籽粕、菜籽饼、葵仁饼等杂粕代替豆粕作为饲粮中的主要蛋白质源是可行的,且用菜籽饼、葵仁饼以及混合饼粕代替豆粕有更高的养殖效益。

关键词：肉羊蛋白质饲粮育肥屠宰性能肉品质

具有高效电磁屏蔽性能的银纳米线/木棉纤维素纸的制备与研究

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功能材料 2023年第8期54卷 8096-8102页

作者：滕睿张全孙依诺牛卓航刘铭轩曹其宇刘守新李伟东北林业大学材料科学与工程学院哈尔滨150040 生物质材料科学与技术教育部重点实验室哈尔滨150040

以多元醇法制备出的银纳米线作为导电填料,木棉纤维素微纤维作为载体,通过真空抽滤制成导电复合纸,使用扫描电子显微镜、X射线衍射仪、X射线光电子能谱仪、四探针测试仪、矢量网络分析仪对复合纸进行表征,探究了银纳米线含量对其电导率... 详细信息

以多元醇法制备出的银纳米线作为导电填料,木棉纤维素微纤维作为载体,通过真空抽滤制成导电复合纸,使用扫描电子显微镜、X射线衍射仪、X射线光电子能谱仪、四探针测试仪、矢量网络分析仪对复合纸进行表征,探究了银纳米线含量对其电导率与电磁屏蔽效能的影响。结果显示,银纳米线作为一种一维的银单质纳米材料能够均匀地分布在复合纸中,并且形成优异的导电网络。当纯纤维素纸中加入2.5%(质量分数)的银纳米线,纸的电阻由470.57 MΩ•cm骤降至1.26 mΩ•cm。当银纳米线的浓度从2.5%提升至10%后,纸的电导率从793.65 S/cm提升至3039.51 S/cm,电磁屏蔽效能也从38.1 dB提升至61.5 dB。

关键词：木棉纤维素银纳米线电导率电磁屏蔽