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Armarium facilitating angina management post myocardial infarction concomitant with coronavirus disease 2019

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Journal of Geriatric Cardiology 2020年第4期17卷 217-220页

作者： Xiao-Qing CAI Pi-Qi JIAO Tao WU Fu-Ming CHEN Bao-shi HAN Jiu-Cong ZHANG Yong-Jiu XIAO Zhi-Feng CHEN jun LI Yu-Ying ZHAO Ling ma Yan LIU Ya-jun shi Pei-jun DAI Yun-Dai CHEN Department of Cardiology the 940th Hospital of Joint Logistics Support Force of Chinese PLALanzhouChina Department of Cardiology the First Medical Center of Chinese PLA General HospitalBeijingChina Department of Cardiology the 980th Hospital of Joint Logistics Support Force of Chinese PLAShijiazhuangChina Department of Infectious Diseases Huoshenshan HospitalWuhanChina

The outbreak and spread of coronavirus disease 2019(COVID-19)are not only a disaster of people’s life and health over the world,[1–3]but also the challenge for medical practitioner in clinical *** to many diagnostic instruments are not suitable or convenient to use any more in contagious ward considering the risk of cross infections,such as traditional stethoscope or electrocardiogram(ECG).In this scenarios,wireless and digital equipment are optimal choices for epidemic management in order to exert rapid diagnosis and disease ***,we reported a case of the patient suffering both COVID-19 and myocardial infarction,for which the tele-ECG and wireless stethoscope facilitated the accurate diagnosis and instant management.

关键词： Acute myocardial infarction Angina Coronavirus disease 2019 Electrocardiogram Stethoscope

高质量发展视角下湖南武陵山片区人地关系协调与空间协调研究

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人文地理 2024年第1期39卷 113-121页

作者：李振民石磊中南大学建筑与艺术学院长沙410083 中南林业科技大学风景园林学院长沙410004

区域的高质量发展必须解决两个关键问题:一是推动人与自然间的协调共生,二是促进区域的空间协调。本研究先从供需视角对湖南武陵山片区各区县进行人地耦合协调评价,再利用优化的引力模型和社会网络分析方法进行空间协调分析。结果表明:... 详细信息

区域的高质量发展必须解决两个关键问题:一是推动人与自然间的协调共生,二是促进区域的空间协调。本研究先从供需视角对湖南武陵山片区各区县进行人地耦合协调评价,再利用优化的引力模型和社会网络分析方法进行空间协调分析。结果表明:在人地关系协调上,湖南武陵山片区各县区呈现西部、东北相对协调,东南失调,濒危失调“S”型分布的空间格局,整体处于勉强协调状态,需求滞后型数量最多;在空间协调上,县区发展质量梯度效应显著,呈东高西低的格局特征,形成了“核心—半核心—边缘”的空间联系网络结构,但密度低、传递与交互的功能较弱、联动效应不足。基于上述分析结果,本研究提出了4个优化建议,以期实现湖南武陵山片区的高质量发展。

关键词：人地协调空间协调高质量发展湖南武陵山片区

重返具身社交:数字时代实体游戏的再中介化——以线下剧本杀为例

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中南民族大学学报（人文社会科学版） 2024年第2期44卷 72-80,184页

作者：朱丽丽施展南京大学新闻传播学院江苏南京210008

剧本杀实体社交游戏的兴起反映了互联网时代对于具身关系的一种新需求。通过深入访谈和参与式观察的质化方法,可有效探究实体游戏如何重新以身体为中介转换及建构媒介规则与逻辑。借助“再中介化”和“具身性”理论框架分析发现:线下剧... 详细信息

剧本杀实体社交游戏的兴起反映了互联网时代对于具身关系的一种新需求。通过深入访谈和参与式观察的质化方法,可有效探究实体游戏如何重新以身体为中介转换及建构媒介规则与逻辑。借助“再中介化”和“具身性”理论框架分析发现:线下剧本杀从网络游戏中引入剧本,运用技术逻辑搭建现实的游戏时空,伴随式构建规则体系,进程与自生两种叙事机制并行。玩家秉持代入与旁观两种角色扮演观念,以剧本预先编写的社交逻辑展开人际互动,尝试将角色关系延伸到现实。再中介化的身体保留着被技术驯化的痕迹,玩家戴上角色面具缓解社交焦虑,通过沉浸时空与主角暗示完成对游戏世界的体认。线下剧本杀反映了被数字技术长期隔离的“网生代”,渴望挣脱屏幕束缚,通过具身社交的交互游戏回归线下的需求,也映射了网生代青年一种独特的再中介化的具身社交实践。

关键词：线下剧本杀实体游戏再中介化具身社交

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Achieving food and nutritional security through agroforestry: a case of Faidherbia albida in sub-Saharan Africa

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Forestry Studies in China 2011年第2期13卷 123-131页

作者： Neo C. MOKGOLODI Moffat P. SETSHOGO shi Ling-ling LIU Yu-jun ma Chao National Engineering Laboratory for Tree Breeding College of Biological Sciences and Biotechnology Beijing Forestry University Beijing 100083 E R. China Department of Biological Sciences University of Botswana Private Bag UB00704 Gaborone Botswana

Faidherbia albida is an ideal agroforestry tree commonly intercropped with annual crops like millet and groundnuts in the dry and densely populated areas of Africa. With its peculiar reverse phenology, it makes growth demands at a different time from that of crops. In addition, it deposits great amount of organic fertilizer on food crops. Leaves entering soils are comparable to fertilization of almost 50 t·ha^-1year^-1 of manure in dense stands of 50 large trees per ha. These nutrients help maximize agricultural production and reduce the need for a fallow period on poorer soils. Research has shown that millet grown under F. albida yielded 2.5 and 3.4 fold increases in grain and protein, respectively. Animals eat pods which contain mean amounts of crude protein of 20.63% and carbohydrate of 40.1% in seeds. Moreover, the continued existence ofF. albida in agroforestry parklands as in Ethiopia and mali signifies the success of traditional conservation measures. Modem scientists have also developed much interest in the role of agroforestry in maintaining long-term biological balance between agriculture and livestock production systems. To ensure food security, which still remains a major challenge in sub-Saharan Africa, and concurrently minimize environmental degradation, promotion of agroforestry that specifically involves indigenous trees is crucial. We discuss the prospective role ofF. albida in alleviating poverty while simultaneously protecting the environment from factors associated with, for example, deforestation and loss of biodiversity. The overall aim is to promote wide-scale adoption ofF. albida as a valuable tree crop in farming systems, particularly in those areas where it remains unexploited.

关键词： agroforestry Faidherbia albida food security fodder nitrogen fixation sub-Saharan Africa

单时相GnRH激发试验对不同体重指数女童中枢性性早熟诊断价值的研究

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中国当代儿科杂志 2024年第6期26卷 592-598页

作者：王伟王一凡肖雅张红如孙俊史文慧李锦波郑州大学第三附属医院/河南省妇幼保健院儿科河南郑州450052

目的探讨单时相促性腺激素释放激素(gonadotropin-releasing hormone,GnRH)激发试验对不同体重指数(body mass index,BMI)女童中枢性性早熟(central precocious puberty,CPP)的诊断价值。方法回顾性分析2017年1月—2023年8月在郑州大学第三附属医院就诊的7.5岁前出现乳房发育的760例女童数据。根据GnRH激发试验结果和临床表现综合诊断,分为CPP组(n=297)和非CPP组(n=463)。再根据体重指数(body mass index,BMI)分为正常体重组(n=540)、超重组(n=116)及肥胖组(n=104)。采用受试者操作特征曲线分析单时相GnRH激发试验对不同BMI女童CPP的诊断价值。结果 GnRH激发后30 min黄体生成素(luteinizing hormone,LH)/卵泡刺激素诊断CPP的曲线下面积为0.985,高于0、60、90 min LH/卵泡刺激素的曲线下面积(P0.05)。30 min LH与BMI及BMI-Z值呈负相关(P<0.05)。30 min LH在正常体重、超重、肥胖女童中诊断CPP的曲线下面积分别为0.952、0.965、0.954 (P<0.05)。结论 30 min GnRH激发试验对不同BMI女童CPP均有较好的诊断价值,有望替代传统的GnRH激发试验,但应注意BMI对LH水平的影响。

关键词：中枢性性早熟体重指数黄体生成素促性腺激素释放激素激发试验女童

Effects of Ta on the solidification behavior and microstructure of a rhenium-containing hot corrosion resistant single crystal

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International Journal of Minerals,Metallurgy and materials 2019年第7期26卷 901-907页

作者： shi-hua ma Hong-quan Hao Dong Wang Lang-hong Lou Jian Zhang Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China School of materials Science and Engineering University of Science and Technology of China Shenyang 110016 China National Natural Science Foundation of China Beijing 100085 China

The effects of Ta on the solidification microstructure of the Re-containing hot corrosion resistant Ni-base single crystal were investigated. Results showed that Ta addition significantly modified the solidification behavior and further influenced the as-cast microstructure. Ta addition changed the solidification characteristic temperatures and decreased the segregation of refractory elements (Re and W) as well as increased the solidification temperature range from 39.0 to 61.8℃ as Ta addition increased from 2wt% to 8wt%. The integration of these two factors increased the primary dendrite arm spacing and changed the morphology and size of γ′ precipitates. With increasing Ta addition from 2wt% to 8wt%, the size of γ′ precipitates in the dendrite core increased substantially from 0.24 to 0.40 μm, whereas the γ′ precipitates in the interdendritic region decreased slightly from 0.56 to 0.47 μm. This paper then discussed the mechanism of these “Ta effects”.

关键词： superalloys tantalum solidification behavior microstructure

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基于深度强化学习的多目标跟踪技术研究

无线电通信技术 2024年第1期50卷 187-192页

作者：杨麒霖刘俊管坚莫倩倩陈华杰谷雨石义芳杭州电子科技大学通信信息传输与融合技术国防重点学科实验室浙江杭州310018

在随机有限集多目标跟踪过程中,由于跟踪问题的复杂性,会耗费大量的计算成本,特别是在目标和杂波密集的复杂情况中,计算成本呈指数增长。随机有限集中通常采用的分配算法——例如Murty算法的时间复杂度为滤波器生成的代价矩阵规模的三... 详细信息

在随机有限集多目标跟踪过程中,由于跟踪问题的复杂性,会耗费大量的计算成本,特别是在目标和杂波密集的复杂情况中,计算成本呈指数增长。随机有限集中通常采用的分配算法——例如Murty算法的时间复杂度为滤波器生成的代价矩阵规模的三次方。为了减少跟踪耗时,结合组合优化的思想,将代价矩阵重定义为二分图,采用了一种基于深度强化学习的二分图匹配算法,取代传统随机有限集中的分配算法,并通过仿真实验验证了所提方法的可行性。实验表明,所提方法在保证跟踪性能的前提下减少了跟踪耗时,提升了跟踪实时性。

关键词：随机有限集强化学习组合优化

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Distinct immune response induced by peptidoglycan derived from Lactobacillus sp

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World Journal of Gastroenterology 2005年第40期11卷 6330-6337页

作者： Jin Sun Yong-Hui shi Guo-Wei Le Xi-Yi ma the Key Laboratory of Food Scienceand Security Ministry of Education Southern Yangtze UniversityWuxi 214036 Jiangsu Province China Institute of FoodNutrition and Safety School of Food Science and TechnologySouthern Yangtze University Wuxi 214036 Jiangsu Province China

AIM： To analyze the distinct immune responses induced by Lactobacillus peptidoglycan （PG）. METHODS： BALB/c mice were intraperitoneally injected with PG once a day for three consecutive days, Peritoneal macrophage and splenocyte mRNA was extracted and the gene expression profile was studied using high-density oligonudeotide microarrays. Inhibitory effects of Lactobacillus PG on colon tumor tissue were studied in vitro and in vivo, RESULTS： The gene expression profiles revealed that the TLR-NF-kB and Jak-STAT signaling pathways were highly activated. An inflammatory phenotype was induced when peritoneal macrophages were initially exposed to Lactobacillus PG and switched to a more complex phenotype when BALB/c mice were treated with three doses of Lactobacillus PG. A protective physiological inflammatory response was induced after three consecutive days of PG treatment. It was tending toward Thl dominant immune response. Lactobacillus PG also appeared to induce a significant in vivo anti-colon tumor effect. CONCLUSION： Lactobacillus PG is responsible for certain immune responses induced by Lactobacilli. Anti-tumor effects of Lactobacilliare likely to attribute to the activation of macrophages by PG expressed on the bacterial cell surface.

关键词： Lactobacillus peptidoglycan Gene expression Immune response

高管贫困经历与企业内部薪酬差距缩小:自我约束效应和移情效应的共同作用

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改革 2024年第4期 126-143页

作者：魏建李世杰山东大学人文社科期刊社山东大学中泰证券金融研究院山东大学经济学院

使用2011—2021年沪深A股上市公司相关数据,探究高管贫困经历对企业内部薪酬差距的影响。研究发现,企业管理层的贫困经历能够缩小企业内部薪酬差距。机制分析表明,总经理的贫困经历可以通过“自我约束效应”降低在职消费水平,减少管理... 详细信息

使用2011—2021年沪深A股上市公司相关数据,探究高管贫困经历对企业内部薪酬差距的影响。研究发现,企业管理层的贫困经历能够缩小企业内部薪酬差距。机制分析表明,总经理的贫困经历可以通过“自我约束效应”降低在职消费水平,减少管理层薪酬;董事长贫困经历具有“移情效应”,能够提高企业职工薪酬占比,但同时董事长贫困经历也会削弱企业内部薪酬差距的激励作用,降低企业收入绩效,导致其对普通员工薪酬发挥的作用有限。对企业异质性特征的分析发现,总体而言,管理层贫困经历在非国有企业、员工议价能力较低企业、劳动密集型企业样本中发挥了更为积极的缩小企业内部薪酬差距的作用。

关键词：高管贫困经历内部薪酬差距管理层特征双重机器学习