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团簇NiPS_(3)异构转化热力学与动力学分析

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原子与分子物理学报 2024年第4期41卷 83-90页

作者：宋静丽方志刚刘立娥魏代霞原琳辽宁科技大学化学工程学院鞍山114051

为了探究团簇NiPS_(3)的稳定性和异构转化机理,本文利用密度泛函理论,在B3LYP/def2-tzvp的量化水平下,对团簇NiPS_(3)的初始构型进行优化分析和异构化计算,得到了10种优化构型和7种异构转化类型.从化学反应的热力学和动力学对异构转化... 详细信息

为了探究团簇NiPS_(3)的稳定性和异构转化机理,本文利用密度泛函理论,在B3LYP/def2-tzvp的量化水平下,对团簇NiPS_(3)的初始构型进行优化分析和异构化计算,得到了10种优化构型和7种异构转化类型.从化学反应的热力学和动力学对异构转化反应进行讨论分析,得出了以下结论:团簇NiPS_(3)的异构转化反应依赖于非金属-金属和非金属-非金属之间的成键与断键;反应物与产物稳定性差别越大,反应进行的越彻底;除反应2((2))→1((4))外,其他的异构化反应在低温下更加易于自发进行;异构化反应趋向于正向进行,即能量高的构型向能量低的构型转换更容易;构型1((2))、构型2((2))和构型1((4))是团簇NiPS_(3)异构转化的最终产物,进行相关材料的研究、开发和生产时,可优先考虑.

关键词：团簇NiPS_(3) 密度泛函理论异构转化过渡态理论范特霍夫方程

Development and validation of a nomogram predicting oneyear mortality in patients undergoing percutaneous coronary intervention

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Journal of Geriatric Cardiology 2022年第12期19卷 960-969页

作者： jing-jing song Yu-Peng LIU Wen-Yao WANG Jie YANG Jun WEN jing CHEN Jun GAO Chun-Li SHAO Yi-Da TANG Department of Cardiology State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Cardiology Guangdong Cardiovascular InstituteGuangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhouChina Department of Cardiology and Institute of Vascular Medicine Peking University Third Hospital/Key Laboratory of Molecular Cardiovascular ScienceMinistry of EducationBeijingChina

OBJECTIVE To formulate a nomogram to predict the risk of one-year mortality after percutaneous coronary intervention(PCI)based on a large-scale real-world Asian *** This study cohort included consecutive patients undergoing PCI in the National Center for Cardiovascular Diseases of *** endpoint was all-cause *** absolute shrinkage and selection operator Cox regression and backward stepwise regression were used to select potential risk factors.A nomogram based on the predictors was accordingly constructed to predict one-year *** performance of the nomogram was *** were stratified into low-,intermediate-and high-risk groups according to the tertile points in the nomogram and compared by the Kaplan-Meier *** A total of 9603 individuals were included in this study and randomly divided into the derivation cohort(60%)and the validation cohort(40%).Six variables were selected to formulate the nomogram,including age,renal insufficiency,cardiac dysfunction,previous cerebrovascular disease,previous PCI,and TIMI 0–1 before *** area under the curve of this nomogram regarding one-year mortality risks were 0.792 and 0.754 in the derivation cohort and validation cohort,***-Meier curve successfully stratified the patients according to three risk *** nomogram calibrated well and exhibited satisfactory clinical utility in the decision curve *** This study developed and validated a simple-to-use nomogram predicting one-year mortality risk in Asian patients undergoing PCI and could help clinicians make risk-dependent decisions.

关键词： patients nomogram mortality

基于人工智能的篮球罚球动作技术分析与应用研究进展

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四川体育科学 2024年第3期43卷 77-82页

作者：李鸣曦宋静贾谊张澜川赵泽西中北大学体育学院山西太原030051 西南交通大学数学学院四川成都610031 四川省体育科学研究所(四川省反兴奋剂中心) 四川成都610093 成都体育学院运动医学与健康学院四川成都610041

随着篮球比赛的激烈化,罚篮决胜负的作用日益凸显,如何提高罚篮命中率已成为现代篮球训练的目标之一。人工智能技术在运动训练领域的应用带来了革命性变革,通过传感器及影像技术,采用机器学习、深度学习和大数据分析等技术,AI系统已经... 详细信息

随着篮球比赛的激烈化,罚篮决胜负的作用日益凸显,如何提高罚篮命中率已成为现代篮球训练的目标之一。人工智能技术在运动训练领域的应用带来了革命性变革,通过传感器及影像技术,采用机器学习、深度学习和大数据分析等技术,AI系统已经能够在优化篮球运动员的罚篮技术动作改进和辅助训练方法等方面显示出其显著效果。本文综述了基于人工智能分析罚球动作技术在罚篮身体姿态和动作技术方面如何帮助运动员精准掌握投篮动作,优化身体姿态,以及在技术层面上实现稳定性,以及利用人工智能技术进行罚篮技术训练的应用。同时还探讨了人工智能技术在实际训练中的局限性,并展望了人工智能在篮球罚球应用前景。

关键词：人工智能罚篮篮球机器学习动作分析

Immunomodulation:The next target of mesenchymal stem cell-derived exosomes in the context of ischemic stroke

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World Journal of Stem Cells 2023年第3期15卷 52-70页

作者： Xiao-Qian Shan Yong-Yin Luo Jun Chang jing-jing song Nan Hao Lan Zhao First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Tianjin 300381China National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion Tianjin 300381China

Ischemic stroke(IS)is the most prevalent form of brain disease,characterized by high morbidity,disability,and ***,there is still a lack of ideal prevention and treatment measures in clinical ***,the trans-plantation therapy of mesenchymal stem cells(MSCs)has been a hot research topic in ***,there are risks associated with this cell therapy,including tumor formation,coagulation dysfunction,and vascular ***,a growing number of studies suggest that the therapeutic effect after transplantation of MSCs is mainly attributed to MSC-derived exosomes(MSC-Exos).And this cell-free mediated therapy appears to circumvent many risks and difficulties when compared to cell therapy,and it may be the most promising new strategy for treating stroke as stem cell replacement *** suggest that suppressing inflammation via modulation of the immune response is an additional treatment option for ***,MSC-Exos mediates the inflam-matory immune response following IS by modulating the central nervous system,the peripheral immune system,and immunomodulatory molecules,thereby promoting neurofunctional recovery after ***,this paper reviews the role,potential mechanisms,and therapeutic potential of MSC-Exos in post-IS inflammation in order to identify new research targets.

关键词： Mesenchymal stem cells Exosomes Ischemic stroke Immunomodulation Inflammation Exosome therapy

护士长授权赋能行为与临床护士工作繁荣的相关性研究

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临床医学研究与实践 2024年第12期9卷 18-21页

作者：宋晶王萍萍任立彦于桂玲青岛大学山东青岛266034 青岛市妇女儿童医院山东青岛266000

目的了解护士长授权赋能行为现状,探讨护士长授权赋能行为与临床护士工作繁荣的关系。方法选取青岛市4所三级甲等医院373名临床护士为研究对象,采用一般资料调查表、护士长授权赋能行为量表、工作繁荣量表对其进行问卷调查。结果护... 详细信息

目的了解护士长授权赋能行为现状,探讨护士长授权赋能行为与临床护士工作繁荣的关系。方法选取青岛市4所三级甲等医院373名临床护士为研究对象,采用一般资料调查表、护士长授权赋能行为量表、工作繁荣量表对其进行问卷调查。结果护士长授权赋能行为量表得分(185.48±36.23)分,临床护士工作繁荣量表得分(36.12±5.78)分。临床护士工作繁荣量表及其2个维度得分和护士长授权赋能行为量表及其5个维度得分均呈正相关(P<0.01)。逐步回归分析显示,护士长授权赋能行为量表的提升工作意义维度是临床护士工作繁荣的影响因素(P<0.001)。结论护士长授权赋能行为对临床护士工作繁荣有直接预测作用,医院管理者应注重在日常工作中培养护理管理者授权型管理方式,营造正性工作氛围,以激发护士临床工作中的学习和活力水平。

关键词：护士授权赋能工作繁荣相关性

Hipro-HoneyBadgerBFT:一种基于并行运行机制的高性能异步共识算法

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化工自动化及仪表 2024年第2期51卷 243-254页

作者：宋静柏粉花张晓晖张弛昆明理工大学信息工程与自动化学院

在大数据时代,信息流通数量极速增长。区块链技术非常适用于数据共享系统。目前数据共享系统搭建在区块链网络中会出现一些性能方面的瓶颈。为此,在HoneyBadgerBFT共识算法的基础上,提出一种更加高效的异步拜占庭共识算法——Hipro-Hone... 详细信息

在大数据时代,信息流通数量极速增长。区块链技术非常适用于数据共享系统。目前数据共享系统搭建在区块链网络中会出现一些性能方面的瓶颈。为此,在HoneyBadgerBFT共识算法的基础上,提出一种更加高效的异步拜占庭共识算法——Hipro-HoneyBadgerBFT。该算法在不牺牲安全性的前提下,可以降低系统的计算资源,提升算法的共识效率。实验结果表明:Hipro-HoneyBadgerBFT共识算法的时延约为HoneyBadgerBFT共识算法时延的1%,吞吐量提升了7倍,CPU利用率则减少了54.09%。

关键词： Hipro-HoneyBadgerBFT共识算法数据共享分布式异步共识联盟区块链 ACS协议解耦 ACS协议划分

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壶腹部神经内分泌肿瘤的研究进展

胃肠病学和肝病学杂志 2024年第4期33卷 468-472,477页

作者：陈银泽宋晶刘小敏孙逊孟祥伟河南省胸科医院、郑州大学附属胸科医院消化内科河南郑州450008 吉林大学第一医院胃肠内科吉林大学第一医院病理科

壶腹部神经内分泌肿瘤(ampullary neuroendocrine neoplasm,A-NEN)发病率低、分类复杂且临床病理特点多样。随着A-NEN报道数量的增加,研究者对本病的认识正在不断深化。然而,由于一些临床工作者对A-NEN的认识存在不足,使得部分患者未能... 详细信息

壶腹部神经内分泌肿瘤(ampullary neuroendocrine neoplasm,A-NEN)发病率低、分类复杂且临床病理特点多样。随着A-NEN报道数量的增加,研究者对本病的认识正在不断深化。然而,由于一些临床工作者对A-NEN的认识存在不足,使得部分患者未能获得最佳的诊治。A-NEN发病初期的临床表现不典型,许多患者发现时已处于进展期。提高A-NEN的早期诊断率、明确A-NET的内镜治疗指征,以及寻找更有效的抗肿瘤治疗靶点是目前研究的重点。本文以各种类型A-NEN的临床病理特征为出发点,对诊断及治疗的相关进展进行综述,为A-NEN患者的个体化治疗提供参考依据。

关键词：肝胰管壶腹神经内分泌肿瘤临床病理特点诊断治疗

Softening and melting behaviors of ferrous burden in hydrogen-rich blast furnace cohesive zone

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Journal of Iron and Steel Research(International) 2023年第12期30卷 2366-2377页

作者： Bin-bin Lyu Guang Wang Fan Yang Hai-bin Zuo Qing-guo Xue jing-song Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing100083China

The changes in the softening and melting behaviors of ferrous burden in the cohesive zone and the characteristics of the slag–iron–coke interface in a blast furnace were investigated by simulating an actual blast furnace under hydrogen-rich *** to the variation in the transient shrinkage of the burden under different atmospheres,the shrinkage start temperature of the sinter was higher than that of the *** negative shrinkage rate of the pellets was greater than that of the ***,the softening start temperature in the blast furnace decreased under hydrogen-rich conditions,giving the blast furnace a broader range of softening *** softening start temperatures of the pellets and sinter decreased from 1102 to 949℃ and 1152 to 1080℃,*** hydrogen-rich traditional blast furnace conditions narrowed the melting zone temperature range and shifted it toward the high-temperature zone,significantly improving the burden layer ***,under the hydrogen-rich oxygen blast furnace conditions,there were a decrease in the melting start temperature,a shift of the melting zone location to the low-temperature zone,and an increase in the burden layer permeability and pressure difference.A comparison of the slag–iron–coke interface characteristics under different atmospheric conditions showed that the carbon content in metallic iron decreased under hydrogen-rich traditional blast furnace conditions compared with traditional blast furnace ***,under hydrogen-rich oxygen blast furnace conditions,the carbon content in metallic iron increased compared with oxygen blast furnace *** findings provide guidance for the development of low-carbon ironmaking processes in blast furnaces.

关键词： Ferrous burden-Hydrogen Softening Melting Cohesive zone Slag-iron-coke interface

Effect of atmosphere and basicity on softening-melting behavior of primary slag formation in cohesive zone

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Journal of Iron and Steel Research(International) 2023年第2期30卷 227-235页

作者： Bin-bin Lyu Guang Wang Lian-da Zhao Hai-bin Zuo Qing-guo Xue jing-song Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing100083China

The softening-melting characteristics of ferrous burden play a crucial role in the thickness and position of the cohesive *** influence of the basicity and experimental atmosphere on the softening-melting behavior of primary slag under slag-coke interaction was investigated using in situ visualization *** mechanism was analyzed using the FactSage software,X-ray diffraction,and electron probe *** softening and melting temperatures of the samples increased with increasing basicity under different *** difference between softening and melting temperatures is smaller in a H_(2) atmosphere than in a CO atmosphere;in H_(2) atmosphere,the range of softening zone in the cohesive zone was significantly *** formed low-melting-point FeO-bearing phases decrease when H_(2) was used as the reducing *** addition,according to FactSage calculations,the high content of metallic iron reduced in the H_(2) atmosphere raised the softening temperature of the primary *** also narrowed and moved downward the cohesive zone due to an increase in softening and melting ***,the increase in basicity promoted the decrease in liquid ratio and improved the permeability of cohesive zone.

关键词： Primary slag Cohesive zone Softening-melting behavior Coke bed Interface characteristic