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Biomedical and Environmental Sciences 2022年第5期35卷 453-457页

作者： WANG Chuan He HAN Su TONG Fei li Ying li zhi chao SUN zhi Jun Department of Cardiology Shengjing Hospital of China Medical UniversityShenyang 110022LiaoningChina

Heart failure(HF)is a serious and advanced stage of heart disease that has remained a major public health threat despite advances in medical therapy.HF prevalence in developed countries is 1.5%–2.0%and significantly ... 详细信息

关键词： Serum prevalence Patients

Shock Index,Modified Shock Index,and Age-Adjusted Shock Index in Predicting the In-Hospital Mortality in Patients with Heart Failure and Chronic Kidney Disease

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Biomedical and Environmental Sciences 2023年第3期36卷 279-283页

作者： HAN Su WANG Chuan He TONG Fei li Ying li zhi chao SUN Zhao Qing SUN zhi Jun Cardiovascular Medicine Department Shengjing Hospital of China Medical UniversityShenyang 110022LiaoningChina

Patients with heart failure(HF)often have a poor prognosis,with high morbidity and mortality.In the Chinese adult population,the prevalence of HF increased by 44%in the past 15 years,which was1.3%[1].HF is often assoc... 详细信息

关键词： Kidney Patients mortality

Structure and Physical Properties and Charge Ordering in La2-xSrxMnO4 （1.125 ≤x≤2.0）

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Chinese Physics Letters 2004年第1期21卷 187-190页

作者： Feng Zhen-Jie Dong Cheng li zhi-chao li Jian-Qi National Laboratory for Superconductivity Institute of Physics and Center for Condensed Matter Physics Chinese Academy of Sciences Beijing 100080 Department of Material Science Liaoning Technical University Fuxin 123000 Beijing Laboratory of Electron Microscopy Institute of Physics and Center for Condensed Matter Physics Chinese Academy of Sciences Beijing 100080

Structural measurements have revealed nonlinear changes of lattice parameters in the layered-perovskite manganites La2−xSrxMnO4 with increasing Sr content; these changes can be well understood by means of interactions among the charge, crystal lattice and the orbital degree of freedom in this strongly correlated system. A probably spin-glass transition was detected for the first time in the x = 1.75 sample at the temperature of around 44K. Fundamental properties of charge ordering appearing in the range of 1.5≤x≤1.75 have been observed at low-temperatures and are interpreted in terms of the Mn3+-dz2 orbital ordering.

关键词： Perovskite

Effect of Finishing Rolling Temperature on Microstructure and Mechanical Properties of Microalloyed TRIP Steels

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Journal of Iron and Steel Research(International) 2013年第10期20卷 75-80页

作者： MI Zhen-li JIANG Hai-tao li zhi-chao CHEN Mei-fang WANG zhi-gang National Engineering Research Center for Advanced Rolling Technology University of Science and Technology Beijing

Different samples of TRIP （transformation induced plasticity） steel obtained by two different hot rolling schedules are investigated by using a SEM （scanning electron microscope）. The microstructure is characterized by using an OM （optical microscope） for phase distribution and by EBSD （electron backscatter diffraction） for texture and phase mapping. ODF （orientation distribution function） graphs are used to investigate the effect of recrystallization behavior of the hot-deformed austenite on phase transformation during the controlled cooling process. The mechanical behavior is interpreted in terms of the strength of both hard and soft phases, in combination with the quantity, loca- tion and transformation kinetics of the mechanically induced martensite （TRIP effect）. The results show that more austenite grains exist in the steels obtained at finishing rolling temperature （FRT） of 750 ℃, which inherited the de- formation structure after the hot-rolling process. The instantaneous n value （ni） of those steels is kept high during a large range of strain before failure, while the tensile strength and total elongation of the steels with respect to the dif- ferent finishing rolling temperatures do not show any significant differences.

关键词： TRIP hot rolling） multiphase mierostructure） mechanical behavior EBSD

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化知识为素养的教学实践探析

教学与管理 2024年第6期 1-5页

作者：江文静李志超山东师范大学教育学部济南250014

发展学生核心素养并不是对知识的否定,而是知识的深化。素养的生成以“强有力”的知识为基础,以动态开放的知识运用为过程。素养对知识的超越表现为素养是知识文化性的表达、知识实践属性的体现以及知识德性智慧的彰显。由于学生核心素... 详细信息

发展学生核心素养并不是对知识的否定,而是知识的深化。素养的生成以“强有力”的知识为基础,以动态开放的知识运用为过程。素养对知识的超越表现为素养是知识文化性的表达、知识实践属性的体现以及知识德性智慧的彰显。由于学生核心素养发展的教学过程是基于知识、运用知识的教学实践,化知识为素养的教学需要遵循教育性、实践性和整体性的基本原则。这就需要教学过程中贯彻素养导向的育人价值理念,突出课程内容的结构化关系,注重学思结合的学习过程以及关注过程性的学生本位评价。

关键词：知识素养核心素养教学理路

黄河流域农业高质量发展的时空特征与影响因素

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湖北农业科学 2024年第3期63卷 129-136,204页

作者：张卓康李志超延安大学政法与公共管理学院陕西延安716000 延安大学经济与管理学院陕西延安716000

基于新发展理念构建农业高质量发展水平评价指标体系,以2008—2019年黄河流域内72个市(州、盟)数据,运用熵值法、标准差椭圆、Moran’s I指数和空间计量模型等方法揭示黄河流域农业高质量发展水平的时空演变特征和影响因素。结果表明,... 详细信息

基于新发展理念构建农业高质量发展水平评价指标体系,以2008—2019年黄河流域内72个市(州、盟)数据,运用熵值法、标准差椭圆、Moran’s I指数和空间计量模型等方法揭示黄河流域农业高质量发展水平的时空演变特征和影响因素。结果表明,考察期内黄河流域农业高质量总体发展水平持续提升,但仍存在结构性问题,创新发展水平和开放发展水平是薄弱环节;农业高质量发展水平呈现空间非均衡分布,逐渐由“东高中西低”转变为“东西高中低”的特征;区域农业发展有空间相关性,并呈现高-高集聚和低-低集聚状态;社会经济发展水平和基础设施促进农业高质量发展,人口城镇化对农业高质量发展有负向效应。由此得出黄河流域要以深化农业供给侧改革、发展差异化农业模式、发挥区域农业辐射效应、充分利用社会经济因素推进农业高质量发展。

关键词：农业高质量发展黄河流域时空特征影响因素

OsPDR20 is an ABCG metal transporter regulating cadmium accumulation in rice

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Journal of Environmental Sciences 2024年第2期136卷 21-34页

作者： He li chao li Di Sun zhi Min Yang Department of Biochemistry and Molecular Biology College of Life SciencesNanjing Agricultural UniversityNanjing 210095China

Cadmium(Cd)is a non-essential toxic heavy metal,seriously posing high environmental risks to human health.Digging genetic resources relevant to functional genes is important for understanding the metal absorption and accumulation in crops and bioremediation of Cd-polluted environments.This study investigated a functionally uncharacterized ATP binding cassette transporter G family(ABCG)gene encoding a Pleiotropic Drug Resistance 20(PDR20)type metal transporter which is localized to the plasma membrane of rice.OsPDR20 was transcriptionally expressed in almost all tissues and organs in lifespan and was strongly induced in roots and shoots of young rice under Cd stress.Ectopic expression of OsPDR20 in a yeast mutant ycf1 sensitive to Cd conferred cellular tolerance with less Cd accumulation.Knockdown of OsPDR20 by RNA interference(RNAi)moderately attenuated root/shoot elongation and biomass,with reduced chlorophylls in rice grown under hydroponic medium with 2 and 10μmol/L Cd,but led to more Cd accumulation.A field trial of rice grown in a realistic Cd-contaminated soil(0.40 mg/kg)showed that RNAi plants growth and development were also compromised compared to wild-type(WT),with smaller panicles and lower spikelet fertility but little effect on yield of grains.However,OsPDR20 suppression resulted in unexpectedly higher levels of Cd accumulation in rice straw including lower leaves and culm and grain.These results suggest that OsPDR20 is actively involved in Cd accumulation and homeostasis in rice crops.The increased Cd accumulation in the RNAi plants has the potential application in phytoremediation of Cd-polluted wetland soils.

关键词： Rice ABCG transporter Cadmium accumulation Phytoremediation

重症肺部感染相关脓毒症预后不良的预测模型及其预测效能

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中华医院感染学杂志 2024年第9期34卷 1286-1289页

作者：周江伟韩贝贝隋海洋李志超张鹏飞忽新刚三门峡市中心医院急诊科河南三门峡472000 河南省人民医院呼吸科河南郑州450000

目的构建重症肺部感染相关脓毒症预后不良的预测模型,并评估模型的预测效能。方法收集2018年4月-2021年2月三门峡市中心医院收治的165例重症肺部感染相关脓毒症患者临床资料,其中28 d治疗后生存58例(预后良好组)、死亡107例(预后不良组)... 详细信息

目的构建重症肺部感染相关脓毒症预后不良的预测模型,并评估模型的预测效能。方法收集2018年4月-2021年2月三门峡市中心医院收治的165例重症肺部感染相关脓毒症患者临床资料,其中28 d治疗后生存58例(预后良好组)、死亡107例(预后不良组),采用Logistics回归分析法构建预后不良的预测模型,Hosmer-Lemeshow检验评估模型的拟合度,受试者工作特征(ROC)曲线评估模型的预测效能。结果与预后良好组比较,预后不良组患者合并急性肾损伤占比较高(P<0.05);白细胞计数、尿素氮、血肌酐、总胆红素、谷草转氨酶、谷丙转氨酶、C-反应蛋白、降钙素原、急性生理学与慢性健康状况Ⅱ(APACHEⅡ)评分、全身感染相关性器官功能衰竭评价(SOFA)评分均升高(P<0.05);前白蛋白及24 h乳酸清除率降低(P<0.05);Logistic回归分析结果显示,合并急性肾损伤及APACHEⅡ评分、SOFA评分均为重症肺部感染相关脓毒症预后不良独立危险因素(P<0.05),24 h乳酸清除率为独立保护因素(P<0.05);多元Logistic回归方程获得重症肺部感染相关脓毒症预后不良的预测模型,Hosmer-Lemeshow检验显示模型拟合度较好(χ^(2)=12.691,P=0.124),ROC曲线分析显示模型的预测效能较高[曲线下面积(AUC)值为0.881,95%CI:0.814~0.949]。结论应用Logistic回归分析法构建预测模型能综合评估重症肺部感染相关脓毒症的不良预后,模型拟合度满意,预测效能较高,可为脓毒症诊疗提供指导数据。

关键词：重症肺部感染脓毒症预后预测模型 Logistics回归分析预测效能

共振激励和重力作用下一维水平弦垂直振动驻波理论与实验研究

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大学物理 2024年第1期43卷 31-36页

作者：蔡为睿李智超沈韩王猛方奕忠中山大学物理学院广东广州510275 中山大学物理学国家级实验教学示范中心广东广州510275

本文用本征函数展开法和拉普拉斯变换求解了重力作用下水平放置的一端固定、另一端以极小振幅作垂直简谐振动的一维弦的竖向振动波动方程,得出解析解,得到弦(弹性绳)共振形成驻波时的所有本征频率,且本征频率和驻波波腹大小、位置均与... 详细信息

本文用本征函数展开法和拉普拉斯变换求解了重力作用下水平放置的一端固定、另一端以极小振幅作垂直简谐振动的一维弦的竖向振动波动方程,得出解析解,得到弦(弹性绳)共振形成驻波时的所有本征频率,且本征频率和驻波波腹大小、位置均与重力无关.实验上测量了驻波波腹的数目随共振频率变化的关系,利用理论推导出的波动方程中波速的表达式及测量弹性绳振动时的张力和绳子的长度,算出绳子的质量线密度,与实验值吻合,从另一角度验证了一维弦的横振动所满足的波动方程理论的正确性.

关键词：重力作用一维水平弦本征函数展开法拉普拉斯变换驻波

Diagnosis and treatment experience of atypical hepatic cystic echinococcosis type 1 at a tertiary center in China

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World Journal of Gastroenterology 2024年第5期30卷 462-470页

作者： Yu-Peng li Jie Zhang zhi-De li chao Ma Guang-Lei Tian Yuan Meng Xiong Chen zhi-Gang Ma Department of Hepatobiliary Surgery People's Hospital of Xinjiang Uygur Autonomous RegionUrumqi 830000Xinjiang Uygur Autonomous RegionChina

BACKGROUND Some hydatid cysts of cystic echinococcosis type 1(CE1)lack well-defined cyst walls or distinctive endocysts,making them difficult to differentiate from simple hepatic cysts.AIM To investigate the diagnostic methods for atypical hepatic CE1 and the clinical efficacy of laparoscopic surgeries.METHODS The clinical data of 93 patients who had a history of visiting endemic areas of CE and were diagnosed with cystic liver lesions for the first time at the People's Hospital of Xinjiang Uygur Autonomous Region(China)from January 2018 to September 2023 were retrospectively analyzed.Clinical diagnoses were made based on findings from serum immunoglobulin tests for echinococcosis,routine abdominal ultrasound,high-frequency ultrasound,abdominal computed tomography(CT)scan,and laparoscopy.Subsequent to the treatments,these patients underwent reexaminations at the outpatient clinic until October 2023.The evaluations included the diagnostic precision of diverse examinations,the efficacy of surgical approaches,and the incidence of CE recurrence.RESULTS All 93 patients were diagnosed with simple hepatic cysts by conventional abdominal ultrasound and abdominal CT scan.Among them,16 patients were preoperatively diagnosed with atypical CE1,and 77 were diagnosed with simple hepatic cysts by high-frequency ultrasound.All the 16 patients preoperatively diagnosed with atypical CE1 underwent laparoscopy,of whom 14 patients were intraoperatively confirmed to have CE1,which was consistent with the postoperative pathological diagnosis,one patient was diagnosed with a mesothelial cyst of the liver,and the other was diagnosed with a hepatic cyst combined with local infection.Among the 77 patients who were preoperatively diagnosed with simple hepatic cysts,4 received aspiration sclerotherapy of hepatic cysts,and 19 received laparoscopic fenestration.These patients were intraoperatively diagnosed with simple hepatic cysts.During the followup period,none of the 14 patients with CE1 experienced recurrence or implantation of hydatid sc

关键词： Hepatic echinococcosis Hepatic cystic echinococcosis type 1 Hepatic cyst Color Doppler ultrasound Laparoscopy