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Association between childhood obesity and gut microbiota:16S rRNA gene sequencing-based cohort study

World Journal of Gastroenterology 2024年第16期30卷 2249-2257页

作者： xu-ming li Qing Lv Ya-Jun Chen Lu-Biao Yan Xin Xiong Laboratory Department Nanjing Medical University Affiliated Obstetrics and Gynecology Hospital(Nanjing Maternal and Child Health Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Pediatrics Shenzhen University General HospitalShenzhen 518055Guangdong ProvinceChina Department of Inspection Division Women’s Hospital of Nanjing Medical University(Nanjing Maternity and Child Health Care Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Pediatrics Women’s Hospital of Nanjing Medical University(Nanjing Maternity and Child Health Care Hospital)Nanjing 210004Jiangsu ProvinceChina Department of Neonatology Chenzhou First People’s HospitalChenzhou 423000Hunan ProvinceChina

BACKGROUND This study aimed to identify characteristic gut genera in obese and normal-weight children(8-12 years old)using 16S rDNA *** research aimed to provide insights for mechanistic studies and prevention strategies for childhood *** normal-weight and thirty age-and sex-matched obese children were *** and body measurements were collected,and fecal samples underwent 16S rDNA *** differences in body mass index(BMI)and body-fat percentage were observed between the *** of gut microbiota diversity revealed lowerα-diversity in obese *** in gut microbiota composition were found between the two *** and Firmicutes were more abundant in the obese group,while Bacteroides and Sanguibacteroides were more prevalent in the control *** To identify the characteristic gut genera in obese and normal-weight children(8-12-year-old)using 16S rDNA sequencing,and provide a basis for subsequent mechanistic studies and prevention strategies for childhood *** Thirty each normal-weight,1:1 matched for age and sex,and obese children,with an obese status from 2020 to 2022,were included in the control and obese groups,*** information was collected through questionnaires and body measurements were obtained from both obese and normal-weight *** samples were collected from both groups and subjected to 16S rDNA sequencing using an Illumina MiSeq sequencing platform for gut microbiota diversity *** Significant differences in BMI and body-fat percentage were observed between the two *** Ace and Chao1 indices were significantly lower in the obese group than those in the control group,whereas differences were not significant in the Shannon and Simpson ***-Wallis tests indicated significant differences in unweighted and weighted UniFrac distances between the gut microbiota of normal-weight and obese children(P<0.01),suggest

关键词： Childhood obesity Gut microbiota 16S rDNA sequencing Diversity analysis Genus identification Body mass index

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刮刷组合式葡萄藤防寒土清土机设计与试验

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吉林大学学报（工学版） 2024年第1期54卷 294-312页

作者：马帅徐丽明许述财牛丛闫成功谭好超中国农业大学工学院北京100083 清华大学汽车安全与节能国家重点实验室北京100084

针对我国北方露地葡萄藤防寒土春季清除机械化作业清土不彻底、易伤藤和机具适应差等问题,设计了一种刮刷组合式葡萄藤防寒土清土机。该机采用双翼式刮土板部件、刚性叶轮部件和柔性刷丝部件分别将葡萄藤的上方防寒土、侧边外围防寒土... 详细信息

针对我国北方露地葡萄藤防寒土春季清除机械化作业清土不彻底、易伤藤和机具适应差等问题,设计了一种刮刷组合式葡萄藤防寒土清土机。该机采用双翼式刮土板部件、刚性叶轮部件和柔性刷丝部件分别将葡萄藤的上方防寒土、侧边外围防寒土和根部附近防寒土一次性清除。对关键部件进行设计,搭建基于STM32F103的控制系统,实现双翼式刮土板部件的自动避障和机具的自动调平。调平性能试验表明,当调平机架向左倾斜到最大角度或向右倾斜到最大角度时,均能在1 s内完成自动调平过程,且没有明显的超调量;当拖拉机行驶在不平整的葡萄行间时,即使拖拉机车身发生较大的倾斜变化,挂接在后侧机具上的清土部件仍能保持期望的水平状态(±2°以内)进行作业;田间清土试验表明,各清土部件运行稳定,不存在相互作业干涉的情况,清土作业后的清土率约为81.96%,葡萄藤损伤率约为1.67%,满足我国北方露地葡萄藤防寒土清除作业要求。

关键词：农业机械化葡萄藤防寒土刮刷组合式清土机

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基于植被状态指数的中国干旱演变特征及遥相关驱动研究

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水电能源科学 2024年第4期42卷 20-24,19页

作者：徐明立王飞徐菲贾敏敏河南省济源水文水资源测报分中心河南济源459099 华北水利水电大学河南郑州450046 河南省濮阳水文水资源测报分中心河南濮阳457099

干旱会引发植被绿度下降、农作物减产、生物栖息地破坏等诸多问题,对人类和自然环境均具有显著影响。以植被状态指数作为干旱指标,利用极点对称模态分解EPSMD方法对1999~2019年全国植被状态指数序列进行周期与趋势识别,采用网格化趋势... 详细信息

干旱会引发植被绿度下降、农作物减产、生物栖息地破坏等诸多问题,对人类和自然环境均具有显著影响。以植被状态指数作为干旱指标,利用极点对称模态分解EPSMD方法对1999~2019年全国植被状态指数序列进行周期与趋势识别,采用网格化趋势检验法揭示网格化的干旱趋势特征,运用多变量小波相干方法探讨干旱与多种遥相关因素的内在关系。结果表明,1999~2019年基于植被状态指数的全国干旱大体呈减轻趋势,植被状态指数的线性倾向率为0.044/10a;不同分区的干旱变化特征各不相同,其中黄土高原区的干旱减轻趋势最为明显,植被状态指数线性倾向率为0.215/10a;网格尺度的植被状态指数趋势特征Z均值在春季、夏季、秋季、冬季分别为0.41、0.79、0.50、0.11,各季度旱情均呈减轻态势;遥相关因素组合PNA-ENSO对全国干旱的影响最为明显。未来可将PNA、ENSO作为干旱预警输入因子提高干旱预报精度。

关键词：干旱植被状态指数遥相关因素演变特征

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基于植被健康指数的中国干旱动态变化及其对大气环流因子的响应研究

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水电能源科学 2024年第7期42卷 1-5页

作者：贾敏敏王飞徐明立宋一鸣河南省济源水文水资源测报分中心河南济源459099 华北水利水电大学水利学院河南郑州450046

为明晰中国干旱时空变化特征及大气环流因子对干旱的驱动机制,基于全国1982~2020年遥感植被健康指数(VHI)数据,采用极点对称模态分解方法(EPSMD)分析干旱动态变化特征,结合像元尺度趋势检验方法(PMK)挖掘干旱趋势特征,运用交叉小波技术... 详细信息

为明晰中国干旱时空变化特征及大气环流因子对干旱的驱动机制,基于全国1982~2020年遥感植被健康指数(VHI)数据,采用极点对称模态分解方法(EPSMD)分析干旱动态变化特征,结合像元尺度趋势检验方法(PMK)挖掘干旱趋势特征,运用交叉小波技术揭示干旱与大气环流因子间响应关系。结果表明,1982~2020年全国干旱整体呈减轻趋势;研究时段内干旱最严重的年份为1989年,该年度夏季干旱程度较轻,冬季干旱相对较重,VHI均值分别为0.47、0.38;春季、夏季、秋季和冬季VHI的趋势特征值分别为0.70、0.48、0.59、0.48,春季干旱的减缓趋势最为明显;厄尔尼诺和南方涛动(ENSO)对干旱的影响最显著。研究结果可为中国干旱成因机制的进一步研究提供参考。

关键词：干旱植被健康指数大气环流因子交叉小波中国

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基于YOLOv5全局注意力和上下文增强的遥感图像目标检测方法

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西华师范大学学报（自然科学版） 2024年第3期45卷 321-326页

作者：杨新秀徐黎明冯正勇西华师范大学物理与天文学院四川南充637009 西华师范大学计算机学院四川南充637009 西华师范大学电子信息工程学院四川南充637009

针对遥感图像目标密集排列,提出一种基于YOLOv5的全局注意力和上下文增强的遥感图像目标检测算法。首先,在主干网络CSPDarknet53的尾部将C3模块替换为Transformer Encoder模块,利用全局注意力捕获目标和周围环境信息;再引入上下文增强模... 详细信息

针对遥感图像目标密集排列,提出一种基于YOLOv5的全局注意力和上下文增强的遥感图像目标检测算法。首先,在主干网络CSPDarknet53的尾部将C3模块替换为Transformer Encoder模块,利用全局注意力捕获目标和周围环境信息;再引入上下文增强模块,利用不同的分支结构获得侧重于大、中、小目标的特征信息;后处理中将NMS替换为DIoU_NMS,有效去除密集排列目标的冗余框,改善检测效果。在RSOD数据集对网络进行测试,与原网络相比,精度提升了13.9%,在飞机数据集进行了消融试验,验证了模块的有效性。

关键词：遥感目标检测 YOLOv5算法上下文增强 Transformer模块

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Integrated Chinese and Western medicine in the treatment of a patient with podocyte infolding glomerulopathy:A case report

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World Journal of Clinical Cases 2023年第19期11卷 4684-4691页

作者： Mei-Ying Chang Yu Zhang ming-xu li Fang xuan Department of Nephrology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing 100091China Department of Nephrology First Medical Center of Chinese PLA General HospitalNephrology Institute of the Chinese People’s Liberation ArmyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijing Key Laboratory of Kidney Disease ResearchBeijing 100853China

BACKGROUND Podocyte infolding glomerulopathy(PIG)is a newly described and rare glomerular *** date,only approximately 40 cases have been reported *** SUMMARY A 26-year-old female patient presented to our hospital with a complaint of intermittent edema of both lower limbs over the past 2 *** patient was diagnosed with *** was prescribed corticosteroid therapy in other hospitals during the initial stage,to which she had responded poorly and had developed femoral head ***,we administered immunosuppressants,reninangiotensin system inhibitors,combined with traditional Chinese *** patient was followed for 1 year,during which her clinical condition *** Integrated Chinese and Western medicine may be effective for PIG treatment,which requires active intervention to improve prognosis.

关键词： Corticosteroid therapy Immunosuppressive agents Podocyte-infolding glomerulopathy Renin-angiotensin system Traditional Chinese medicine Case report

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Experimental realization of deterministic joint remote preparation of an arbitrary two-qubit pure state via GHZ states

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Science China(Information Sciences) 2024年第3期67卷 317-318页

作者： Nachuan li Lu xu Jin-ming liU State Key Laboratory of Precision Spectroscopy School of Physics and Electronic ScienceEast China Normal University Hefei Origin Quantum Computing Technology Co. Ltd.

Quantum teleportation(QT) [1] enables secure transfer of an unknown quantum state between remote locations without physically transmitting the initial state. Unlike QT,with the sender possessing complete knowledge of the initial state, remote state preparation(RSP) [2] exhibits a tradeoff between the amount of the entanglement resource used and the classical communication cost.

关键词： Quantum communication

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Quantum support vector machine for multi classification

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Communications in Theoretical Physics 2024年第07期76卷 59-64页

作者： li xu Xiao-yu Zhang ming li Shu-qian Shen College of Science China University of Petroleum

Classical machine learning algorithms seem to be totally incapable of processing tremendous data, while quantum machine learning algorithms could deal with big data unhurriedly and provide exponential acceleration over classical counterparts. In this paper, we propose two quantum support vector machine algorithms for multi classification. One is the quantum version of the directed acyclic graph support vector machine. The other one is to use the Grover search algorithm before measurement, which amplifies the amplitude of the phase storing of the classification result. For k classification, the former provides quadratic reduction in computational complexity when classifying. The latter accelerates the training speed significantly and more importantly, the classification result can be read out with a probability of at least 50% using only one measurement. We conduct numerical simulations on two algorithms,and their classification success rates are 96% and 88.7%, respectively.

关键词： Grover search algorithm quantum feature mapping quantum support vector machine

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Microstructure and property of laser additive manufactured alloy Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si after aged at different temperatures

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Rare Metals 2024年第5期43卷 2275-2281页

作者： Guo-Chao li xu Cheng Hua-ming Wang National Engineering Laboratory of Additive Manufacturing for Large Metallic Components and Engineering Research Center of Ministry of Education on Laser Direct Manufacturing for Large Metallic Components School of Materials Science and EngineeringBeihang UniversityBeijing 100191China

The solid solution and aging treatment for conventional manufacturing processes might not be suitable for laser additive manufactured titanium alloys due to the different lamellar *** this study,the influence of aging temperatures(600,700 and 800°C)on microstructure and mechanical properties of titanium alloy Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si was *** results indicate that after solid solution treatment at 970°C followed by water quenching,the alloy mainly consists of coarsening lamellar a phase in martensite α' *** at 600°C will not change the size of primary lamellar α phase but lead to huge amount of secondary a phases(α_(s))generating with very fine *** increasing the aging temperature,the number of α_(s) decreases but with coarsened *** aged at 800°C,the width of the asphase reaches 350 nm,almost 7 times wider than that aged at 600°*** changing size of α_(s) obviously influences the property of the *** fine α_(s) leads to high strength and microhardness but low plasticity,and specimen aged at 700°C with suitable assize has the best comprehensive properties.

关键词： α+βtitanium alloy Laser additive manufacturing Solid solution and aging treatment Microstructure Room temperature tensile property

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Thermodynamic geometry of the RN-Ad S black hole and non-local observables

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Communications in Theoretical Physics 2024年第2期76卷 137-144页

作者： Chao Wang Bin Wu Zhen-ming xu Wen-li Yang Institute of Physics Shaanxi University of TechnologyHanzhong 723000China School of Physics Northwest UniversityXi'an 710127China Institute of Modern Physics Northwest UniversityXi'an 710127China Shaanxi Key Laboratory for Theoretical Physics Frontiers Xi'an 710127China Peng Huanwu Center for Fundamental Theory Xi'an 710127China

This paper studies the thermodynamic geometry of the Reissner–Nordstr?m-anti-de Sitter(RN-AdS)black hole via detection of the non-local observables in the dual field theory,including the entanglement entropy and equal-time two-point correlation *** the dimensional analysis,we construct the principle of corresponding states of black hole *** a result,our findings can be applied to black holes with different Ad S *** this sense,the probe of the thermodynamic geometry of the RN-Ad S black hole though the non-local observables in dual field theory has been confirmed numerically.

关键词： black hole thermodynamic thermodynamic geometry phase transition non-local observables

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