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Storage, form, and influencing factors of karst inorganic carbon in a carbonate area in China

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Science China Earth Sciences 2024年第3期67卷 725-739页

作者： Chaochao DU Xiaoyong BAI Yangbing li Qiu TAN Cuiwei ZHAO Guangjie LUO Luhua WU Fei CHEN Chaojun li Chen RAN Sirui ZHANG lian XIONG Fengjiao SONG Biqin XIAO zilin li Yingying XUE Mingkang LONG Qing LUO Xiaoyun ZHANG Minghui li Xiaoqian SHEN Shu YANG State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China School of Geography and Environmental Sciences Guizhou Normal UniversityGuiyang 550001China CAS Center for Excellence in Quaternary Science and Global Change Xi'an 710061China Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed Guizhou Normal CollegeGuiyang 550018China College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China

Carbonate rock chemical weathering carbon sinks reduce the rate of increase of the atmospheric CO_(2) concentration and global warming. However, uncertainty still exists in the estimation results of carbonate rock chemical weathering carbon sink fluxes(CCSF), and the contributions of climate change and ecological restoration to the CCSF are not clear. To this end, we compiled published site data on ion concentrations in different watersheds in China and used a classical thermodynamic dissolution model to reassess the potential and spatial and temporal patterns of the CCSF in China from 1991 to 2020. We quantified the contributions of temperature(MAT), precipitation(MAP), evapotranspiration(ET), soil water(SM), and the normalized difference vegetation index(NDVI) to the CCSF. The results revealed that(1) China's CCSF was 22.76 t CO_(2)km^(-2)yr^(-1), which was higher than the global average(15.77 t CO_(2)km^(-2)yr^(-1)). The total carbonate rock chemical weathering carbon sink(CCS) was 4772.67×10^(4)t CO_(2), contributing 14.91% of the global CCS through a carbonate rock area of 252.98×10^(4)km^(-2).(2) China's CCSF decreased gradually from southeast to northwest, with values of 33.14, 12.93, and7.27 t CO_(2)km^(-2)yr^(-1)in the southern karst, Qinghai-Tibetan karst, and northern karst regions, respectively.(3) The overall CCSF in China exhibited an increasing trend from 1991 to 2020, with a rate of increase of 0.16 t CO_(2)km^(-2)yr^(-1).(4) The contributions of the MAP, MAT, ET, SM, and NDVI to the CCSF were 63.3%, 3.02%, 27.5%, 3.1%, and 3.05%, respectively. Among them, the increase in precipitation was the main contributor to the increase in the CCSF in China over the last 30 years, while the enhancement of ET offset part of the positive contribution of the increase in precipitation to the CCSF. In conclusion, the results of this study provide a systematic quantification of the magnitude, the patterns, and the influencing factors of CCS over a long time series in

关键词： Carbonate rocks Carbon sinks Patterns Influencing factors Thermodynamic dissolution modeling

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Nano friction behaviour between magnetic materials and copper considering the inter-diffusion effect

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Friction 2024年第7期12卷 1532-1547页

作者： zilin li lisha DOU Shiyu YANG Huajiang OUYANG Qichen ZHU Xiaoyang CHEN Xin JIA Shuaiwei DOU Xiaolong CUI Yudong ZHANG Jingjiang QIU Guochen QI Bangbang NIE Pan liU Ronghan WEI School of Mechanics and Safety Engineering Zhengzhou UniversityZhengzhou 450001China Engineering Technology Research Center of Henan Province for MEMS Manufacturing and Application Zhengzhou UniversityZhengzhou 450001China Institute of Intelligent Sensing Zhengzhou UniversityZhengzhou 450001China School of Engineering University of LiverpoolLiverpool L693GHUK School of Cyber Science and Engineering&Hanwei Institute of Internet of Things Zhengzhou UniversityZhengzhou 450001China

Copper,permalloy,cobalt,and silicon are the materials that have been widely utilised in magnetic *** the size of interest is down to the nanoscale,the inter-diffusion between certain materials becomes *** paper studies the nanoscale friction characteristics between frictional pairs with and without inter-diffusion properties through the atomic force *** distinct evolution features of nanoscale friction force when inter-diffusion is involved are discovered experimentally,which is also confirmed through theoretical ***,through the thin film deposition method,four pairs of contact materials(Cu–Ni_(81)Fe_(19),Si–Ni_(81)Fe_(19),Cu–Co,Cu–Si)are designed for friction tests,in which diffusion occurs at the interface of Cu–Ni_(81)Fe_(19)***,the effects of sliding velocity and loading force on the nano friction of each pair are *** is found that regardless of the diffusion phenomenon:(1)the adhesion force values exhibit a notable correlation to the values of the friction force;(2)the friction force in all four material pairs consistently increases with the growth of the normal loading force,although the growth rate may *** terms of the sliding velocity effect,the friction forces of immiscible materials(Si–Ni_(81)Fe_(19),Cu–Co,and Cu–Si)are found to increase with the increasing sliding ***,the friction force of Cu–Ni_(81)Fe_(19),decreases with the increasing sliding ***,a compositive friction model considering both the velocity and the normal force effect was proposed,which shows good agreement with the experimental results and explains the nano friction behaviour of both miscible and immiscible metals.

关键词： atomic force microscope friction force normal load sliding velocity

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不同烤烟品种烟叶质量对比分析

现代农业科技 2024年第2期 136-139页

作者：李自林秦娜云南省烟草公司丽江市公司云南丽江674200 中国移动通信集团云南有限公司西双版纳分公司云南西双版纳666199

本文采用田间随机区组试验设计,结合数学统计分析方法,分析比较了云烟97、云烟121、秦烟96、NC71共4个烤烟品种在丽江烟区的烟叶质量,包括农艺性状、外观质量和化学成分,以期筛选出适宜丽江烟区栽培的烤烟品种。结果表明:云烟121的农艺... 详细信息

本文采用田间随机区组试验设计,结合数学统计分析方法,分析比较了云烟97、云烟121、秦烟96、NC71共4个烤烟品种在丽江烟区的烟叶质量,包括农艺性状、外观质量和化学成分,以期筛选出适宜丽江烟区栽培的烤烟品种。结果表明:云烟121的农艺性状、外观质量、化学成分最佳;4个烤烟品种各等级烟叶总氮含量偏低,总糖、还原糖含量均偏高,烟碱、氯、钾含量均在优质烟叶适宜范围。

关键词：烤烟品种烟叶质量农艺性状外观质量化学成分

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Portable spirometer-based pulmonary function test willingness in China: A nationwide cross-sectional study from the "Happy Breathing Program"

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中华医学杂志(英文版) 2024年第14期137卷 2024 Jul 2页

作者： Qi Weiran Huang Ke Chen Qiushi Jiao lirui Yu Fengyun Yu Yiwen Niu Hongtao li Wei Fang Fang Lei Jieping Chu Xu li zilin Geldsetzer Pascal B?rnighausen Till Chen Simiao Yang Ting Wang Chen Department of Health Economics and Health Policy School of Population Medicine and Public Health Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China Department of Pulmonary and Critical Care Medicine National Center for Respiratory Medicine State Key Laboratory of Respiratory Health and Multimorbidity National Clinical Research Center for Respiratory Diseases Institute of Respiratory Medicine Chinese Academy of Medical Sciences Center of Respiratory Medicine China-Japan Friendship Hospital Beijing China The Harold and Inge Marcus Department of Industrial and Manufacturing Engineering The Pennsylvania State University University Park PA USA Department of Health Policy and Management Gillings School of Global Public Health University of North Carolina at Chapel Hill Chapel Hill NC USA Heidelberg Institute of Global Health (HIGH) Faculty of Medicine and University Hospital Heidelberg University Heidelberg Germany Administration Office of Medical Reform and Development China-Japan Friendship Hospital Beijing China Data and Project Management Unit Institute of Clinical Medical Sciences China-Japan Friendship Hospital Beijing China Department of Statistics School of Mathematics and Statistics Northeast Normal University Changchun Jilin China Chan Zuckerberg Biohub Stanford University School of Medicine San Francisco CA USA Division of Primary Care and Population Health Department of Medicine Stanford University School of Medicine Stanford CA USA Harvard Center for Population and Development Studies Harvard T.H. Chan School of Public Health Harvard University Cambridge MA USA

Background: Understanding willingness to undergo pulmonary function tests (PFTs) and the factors associated with poor uptake of PFTs is crucial for improving early detection and treatment of chronic obstructive pulmonary disease (COPD). This study aimed to understand willingness to undergo PFTs among high-risk populations and identify any barriers that may contribute to low uptake of ***: We collected data from participants in the "Happy Breathing Program" in China. Participants who did not follow physicians’ recommendations to undergo PFTs were invited to complete a survey regarding their willingness to undergo PFTs and their reasons for not undergoing PFTs. We estimated the proportion of participants who were willing to undergo PFTs and examined the various reasons for participants to not undergo PFTs. We conducted univariable and multivariable logistic regressions to analyze the impact of individual-level factors on willingness to undergo ***: A total of 8475 participants who had completed the survey on willingness to undergo PFTs were included in this study. Out of these participants, 7660 (90.4%) were willing to undergo PFTs. Among those who were willing to undergo PFTs but actually did not, the main reasons for not doing so were geographical inaccessibility (n = 3304, 43.1%) and a lack of trust in primary healthcare institutions (n = 2809, 36.7%). Among the 815 participants who were unwilling to undergo PFTs, over half (n = 447, 54.8%) believed that they did not have health problems and would only consider PFTs when they felt unwell. In the multivariable regression, individuals who were ≤54 years old, residing in rural townships, with a secondary educational level, with medical reimbursement, still working, with occupational exposure to dust, and aware of the abbreviation "COPD" were more willing to undergo ***: Willingness to undergo PFTs was high among high-risk populations. Policymakers may consider implementing strategies suc

关键词： Chronic obstructive pulmonary disease Pulmonary function tests Willingness to undergo pulmonary function tests Population medicine

主动脉腔内全程重塑装置(AERD)治疗Stanford B型主动脉夹层术后远端残余夹层临床效果

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中华胸心血管外科杂志 2024年第6期40卷 331-334页

作者：张静隆陈佳李超孙子兰李子林左健空军军医大学西京医院心血管外科西安710032

目的评估主动脉腔内全程重塑装置(aortic endovascular remodeling device,AERD)在Stanford B型主动脉夹层术后远端残余夹层治疗中的安全性和有效性。方法采用前瞻性队列研究设计,根据入排标准,纳入2022年1月至2023年12月,共60例Stanfor... 详细信息

目的评估主动脉腔内全程重塑装置(aortic endovascular remodeling device,AERD)在Stanford B型主动脉夹层术后远端残余夹层治疗中的安全性和有效性。方法采用前瞻性队列研究设计,根据入排标准,纳入2022年1月至2023年12月,共60例Stanford B型主动脉夹层胸主动脉腔内修复术(TEVAR)术后患者,利用AERD进行治疗,收集术前术后CTA影像资料,采用计算机三维重建流体力学进行分析,评估术后远端主动脉重塑情况。结果术后30天内无主要不良事件发生,无与主动脉夹层相关死亡。术后短期结果显示,应用AERD治疗Stanford B型主动脉夹层术后远端残余夹层是安全的。AERD治疗明显增加夹层段真腔体积,增幅达到88.44%,同时AERD治疗明显减少夹层段假腔体积,减幅达到61.04%,效果显著。AERD治疗除对支架远端主动脉真腔最长径和肠系膜上动脉上缘主动脉真腔最长径无明显影响外,相比于主动脉真腔最长径的变化,主动脉真腔最短径的变化更为显著,支架远端主动脉真腔最短径增幅32.29%,主动脉短径最窄处真腔最短径增幅204.15%,肠系膜上动脉上缘主动脉真腔最短径增幅80.76%,肾动脉下缘主动脉真腔最短径增幅115.26%,左髂动脉开口处真腔最短径增幅152.01%,右髂动脉开口处真腔最短径增幅144.21%,AERD显著促进Stanford B型主动脉夹层术后远端主动脉良性重塑。结论AERD在Stanford B型主动脉夹层术后远端残余夹层治疗中安全有效,术后早期就能促进真腔扩张、假腔缩减,促进Stanford B型主动脉夹层TEVAR术后主动脉远端良性重塑。

关键词： Stanford B型主动脉夹层残余夹层主动脉腔内重塑装置远端主动脉重塑

基于人工蜂群算法的温差发电阵列最优重构方法

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上海交通大学学报 2024年第1期58卷 111-126页

作者：杨博胡袁炜骥郭正勋束洪春曹璞璘李子林昆明理工大学电力工程学院昆明650031 香港理工大学电机工程系中国香港999077

在新能源发电技术快速发展的背景下,温差发电(TEG)技术能够很好地利用新能源发电中产生的废热.然而,温度分布的变化会使得TEG阵列的输出特性恶化、发电效率降低.提出基于人工蜂群(ABC)算法的TEG阵列重构方法,在3种不同温度分布情况下,利... 详细信息

在新能源发电技术快速发展的背景下,温差发电(TEG)技术能够很好地利用新能源发电中产生的废热.然而,温度分布的变化会使得TEG阵列的输出特性恶化、发电效率降低.提出基于人工蜂群(ABC)算法的TEG阵列重构方法,在3种不同温度分布情况下,利用ABC在对称9×9和不对称10×15两种TEG阵列进行动态重构.将所提算法与遗传算法、粒子群优化算法和秃鹰搜索优化算法3种启发式算法作对比,并给出由ABC重构后的TEG阵列温度分布图.结果表明:ABC能够提高TEG阵列的输出功率,输出功率-电压曲线均趋向呈现出单个峰值.此外,利用基于RTLAB平台上的硬件在环实验验证了硬件可行性.

关键词：温差发电人工蜂群算法动态重构硬件在环实验

苦胆草多糖抗氧化及抗人宫颈癌HeLa细胞的作用及机制

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中国实验方剂学杂志 2024年第18期30卷 80-88页

作者：黄丽金李自霖杨紫焰王涵陈贵元大理大学基础医学院云南大理671000 云南省昆虫生物医药研发重点实验室云南大理671000

目的:探讨苦胆草多糖(APP)抗氧化及抗人宫颈癌HeLa细胞的作用及机制。方法:细胞功能试验通过细胞增殖与活性检测法(CCK-8)、划痕试验、Transwell试验检测APP(400、450、500 mg·L^(-1))对HeLa细胞的增殖、迁移、侵袭的作用;分子机制实... 详细信息

目的:探讨苦胆草多糖(APP)抗氧化及抗人宫颈癌HeLa细胞的作用及机制。方法:细胞功能试验通过细胞增殖与活性检测法(CCK-8)、划痕试验、Transwell试验检测APP(400、450、500 mg·L^(-1))对HeLa细胞的增殖、迁移、侵袭的作用;分子机制实验通过流式细胞术、实时荧光定量聚合酶链式反应(Real-time PCR)和蛋白免疫印迹法(Western blot)检测APP对HeLa细胞凋亡及周期相关调控mRNA及蛋白表达的影响;DPPH^(+)、OH^(-)、还原力实验检测APP的抗氧化活性。结果:与空白组比较,APP(400、450、500 mg·L^(-1)),均能明显抑制HeLa细胞的迁移、增殖、侵袭能力,具有时间、浓度依赖(Plin B_(1))、B细胞淋巴瘤-2(Bcl-2)mRNA和蛋白表达均下降,胱天蛋白酶(Caspase)-3、Caspase-8、Caspase-9、Bcl-2相关X蛋白(Bax) mRNA和蛋白表达明显升高(P<0.05,P<0.01),以上指标均具有浓度依赖性,与流式细胞结果一致;体外抗氧化实验,APP(50~1 000 mg·L^(-1))具有清除DPPH^(+)、OH^(-)的能力,具有一定的抗氧化活性。结论:APP具有抗氧化活性并能够抑制HeLa细胞的活性,促进HeLa细胞凋亡的能力。

关键词：苦胆草多糖宫颈癌HeLa细胞抗肿瘤抗氧化凋亡

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中国式现代化的主体逻辑:基于工农联盟的考察

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河北农业大学学报（社会科学版） 2024年第1期26卷 1-8页

作者：袁富民李字琳中国农业大学马克思主义学院北京100083

中国式现代化是以人民为中心的现代化。聚焦工农联盟诠释中国式现代化的主体逻辑,既能呈现中国式现代化人民性的内在结构,又能全面展现中国式现代化之政治、经济、文化、社会、生态文明“五位一体”的人民力量。工农联盟确立了民族独立... 详细信息

中国式现代化是以人民为中心的现代化。聚焦工农联盟诠释中国式现代化的主体逻辑,既能呈现中国式现代化人民性的内在结构,又能全面展现中国式现代化之政治、经济、文化、社会、生态文明“五位一体”的人民力量。工农联盟确立了民族独立、人民解放的政治现代化基础,完成了社会主义工业化等经济现代化的基本条件,深化了全体人民公共精神在文化现代化中的整体表达,完善了经济快速增长同时社会有序发展的社会现代化进程,推进了人与自然和谐共生的生态文明现代化全面展开。工农联盟以不同维度深深嵌入中国式现代化历史进程,以其主体性视角彰显了中国式现代化的社会主义本质,丰富了世界现代化理论与实践。

关键词：中国式现代化主体逻辑工农联盟社会主义

新型全腔内经股动脉三分支覆膜支架系统治疗主动脉弓部病变的FIM研究

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中国普通外科杂志 2024年第6期33卷 894-900页

作者：左健刘金成俞世强易蔚张静隆陈佳李超孙子兰李子林中国人民解放军空军军医大学第一附属医院心血管外科陕西西安710032

背景与目的:目前,主动脉弓部病变还是以常规全弓置换为主要治疗手段。常规全弓置换术需要在开胸及深低温体外循环状态下完成,手术时间可达10余小时,是名副其实的“血战、夜战、死战”手术。由于主动脉弓部特殊的解剖结构,使其长期被视... 详细信息

背景与目的:目前,主动脉弓部病变还是以常规全弓置换为主要治疗手段。常规全弓置换术需要在开胸及深低温体外循环状态下完成,手术时间可达10余小时,是名副其实的“血战、夜战、死战”手术。由于主动脉弓部特殊的解剖结构,使其长期被视为腔内治疗的“禁区”。虽然主动脉弓部腔内技术日新月异,但其瓶颈问题始终无法突破,目前仍很难在临床上广泛应用。本文报告笔者中心采用一款新型全腔内经股动脉三分支覆膜支架系统治疗主动脉弓部病变的first-in-man(FIM)研究结果,初步评价其应用效果与安全性。方法:分析2023年10月—2023年12月中国人民解放军空军军医大学第一附属医院采用新型全腔内经股动脉三分支覆膜支架系统为3例主动脉弓部存在病变的患者实施治疗的临床结果。采集患者基本信息及病变特点、术中相关指标、术后主动脉弓部修复及相关并发症情况。结果:3例患者均为男性,年龄50~74岁。手术全部成功,无短期术后并发症及死亡。3例患者包括主动脉弓部夹层动脉瘤1例,主动脉弓部瘤伴溃疡2例;其中2例患者因胸痛就诊,1例为体检发现。3例患者均合并高血压,合并糖尿病1例。2例患者病变位于1~3区,累及左颈总动脉;1例患者病变位于0~3区,累及无名动脉和左颈总动脉。平均手术时间125 min。1例带管入重症监护室(ICU),其余2例均于手术室内拔管。术中无脑部缺血过程,未出现心脑血管并发症。术中支架均由股动脉入路导入,支架植入顺利,术中行数字减影血管造影提示支架位置、形态良好,血流通畅,病变区域完全隔绝,无内漏及分支动脉狭窄的不良事件出现。ICU平均停留时间31 h。术后复查主动脉血管成像显示主体及分支支架位置良好,瘤体隔绝良好,无内漏及分支血管狭窄闭塞等情况。术后无心脑血管并发症出现。结论:应用新型全腔内经股动脉三分支覆膜支架系统治疗主动脉弓部病变,术中无脑缺血过程,输送系统均由股动脉入路,操作更加简便,创伤进一步减小。手术过程平顺,手术效果良好,术后短期疗效满意,具有较好的临床应用前景。

关键词：主动脉疾病主动脉,胸血管内操作支架三分支重建