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机构投资者持股会影响企业ESG表现吗?——来自中国上市公司的证据

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湖南师范大学自然科学学报 2024年第3期47卷 120-127,136页

作者：邓楚瑶林志军张启迪澳门科技大学商学院中国澳门999078 湖南人文科技学院商学院娄底417000

在“双碳”目标下,推行“环境、社会责任和公司治理”(ESG)是企业实现可持续发展的重要途径。机构投资者是资本市场的重要力量,积极参与公司治理,有助于企业ESG的建设与实践。本文以2010—2021年间我国上市公司的数据作为研究样本,探索... 详细信息

在“双碳”目标下,推行“环境、社会责任和公司治理”(ESG)是企业实现可持续发展的重要途径。机构投资者是资本市场的重要力量,积极参与公司治理,有助于企业ESG的建设与实践。本文以2010—2021年间我国上市公司的数据作为研究样本,探索机构投资者持股与企业ESG表现之间的影响机制。研究结果表明,机构投资者持股与企业ESG表现之间呈显著正相关,而且对环境(E)、社会责任(S)和公司治理(G)3个维度表现均有显著的促进作用,支持机构投资者“有效监督假说”。机构投资者异质性分析表明,稳定型机构投资者和专注型机构投资者更积极发挥监督和治理职能,与企业ESG表现呈显著正向关系。本文研究结论为培育长期稳定的机构投资者,改善上市公司ESG表现,实现企业、社会和环境的可持续发展提供实践指导。

关键词：机构投资者持股企业ESG表现公司治理

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Gaseous metabolites as therapeutic targets in ulcerative colitis

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World Journal of Gastroenterology 2023年第4期29卷 682-691页

作者： chu K yao Chen Sarbagili-Shabat Department of Gastroenterology Monash UniversityMelbourne 3004Australia Pediatric Gastroenterology Unit PIBD Research CenterWolfson Medical CenterHolon 5822012Israel

Diet therapies are currently under-utilised in optimising clinical outcomes for patients with active ulcerative colitis(UC).Furthermore,existing dietary therapies are framed by poorly defined mechanistic targets to warrant its *** is good evidence to suggest that microbial production of gaseous metabolites,hydrogen sulfide(H2S)and nitric oxide(NO)are implicated in the development of mucosal inflammation in *** a cellular level,exposure of the colonic epithelium to excessive concentrations of these gases are shown to promote functional defects described in ***,targeting bacterial production of these gases could provide an opportunity to formulate new dietary therapies in *** the paucity of evidence,there is epidemiological and clinical data to support the concept of reducing mucosal inflammation in UC via dietary strategies that reduce *** dietary components,namely sulphurcontaining amino acids and inorganic sulphur have been shown to be influential in enhancing colonic H2S *** recent data suggests increasing the supply of readily fermentable fibre as an effective strategy for H2S ***,very little is known regarding how diet alters microbial production of ***,the current evidence suggest that a whole diet approach is ***,biomarkers for assessing changes in microbial gaseous metabolites in response to dietary interventions are very much *** conclusion,this review identifies a great need for high quality randomised-controlled trials to demonstrate the efficacy of a sulphide-reducing dietary therapy for patients with active UC.

关键词： Diet Ulcerative colitis Hydrogen sulfide Nitric oxide Sulphide-reducing diet

2005—2021年区域和省级电网碳排放因子研究

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气候变化研究进展 2024年第3期20卷 337-350页

作者：魏夕凯谭效时阮嘉桐林明秦露孙国立向可祺褚曜珲中国船舶集团有限公司第七一四研究所北京100020 中国人民大学环境学院北京100872 广船国际有限公司广州511466 山东大学计算机科学与技术学院青岛250101

区域和省级电网碳排放因子是企业用电间接碳排放核算的重要基础,但官方数据存在时间不连续和较长滞后的问题。文中采用国家发改委公布的区域和省级电网碳排放因子计算方法,对2005—2021年电网碳排放因子进行计算。通过对比官方数据,验... 详细信息

区域和省级电网碳排放因子是企业用电间接碳排放核算的重要基础,但官方数据存在时间不连续和较长滞后的问题。文中采用国家发改委公布的区域和省级电网碳排放因子计算方法,对2005—2021年电网碳排放因子进行计算。通过对比官方数据,验证了计算结果准确性,深入研究电网碳排放因子的分布特征、变化趋势及其差异,并对两种电网碳排放因子进行应用场景分析。结果表明,区域电网碳排放因子的空间分布呈东北高、西南低,省级电网碳排放因子的空间分布呈东部高、中西部低,2005—2021年整体呈下降趋势,但地区间低碳发展的不均衡加剧。各省发电结构与输入电力来源不同导致省级电网碳排放因子与所在区域电网的碳排放因子存在较大差异,东部和中部省份的省级电网碳排放因子显著高于区域电网,西部省份相反。为提升行业企业电力碳排放核算准确度,优先选择省级电网碳排放因子;为评估同一区域内各行业企业的减排成效,应避免各省电力差异导致的不公平问题,优先选择区域电网碳排放因子。

关键词：区域电网省级电网碳排放因子碳排放核算电力碳排放

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Highly Durable and Fast Response Fabric Strain Sensor for Movement Monitoring Under Extreme Conditions

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Advanced Fiber Materials 2023年第1期5卷 223-234页

作者： Dongxing Lu Shiqin Liao yao chu Yibing Cai Qufu Wei Kunlin Chen Qingqing Wang Key Laboratory of Eco‑Textiles Ministry of EducationJiangnan UniversityWuxi 214122China Jiangxi Centre for Modern Apparel Engineering and Technology Jiangxi Institute of Fashion TechnologyNanchang 330201China

The exploration of smart electronic textiles is a common goal to improve people’s quality of ***,current smart e-textiles still face challenges such as being prone to failure under humid or cold conditions,lack of washing durability and chemical ***,a multifunctional strain sensor with a negative resistance change was developed based on the excellent elasticity of knitted fabrics.A reduced graphene oxide(rGO)conductive fabric was first obtained by electrostatic self-assembly of chitosan(CS).Then a strain sensor was prepared using a dip-coating process to adsorb nanoscale silica dioxide and poly(dimethylsiloxane)(PDMS).A broad working range of 60%,a fast response time(22 ms)and stable cycling durability over 4000 cycles were simultaneously achieved using the prepared ***,the sensor showed excel-lent superhydrophobicity,photothermal effects and UV protection,as graphene,silica and PDMS acted in *** multifunctional sensor could be mounted on human joints to perform tasks,including activity monitoring,medical rehabili-tation evaluation and gesture recognition,due to its superior electromechanical *** on its multiple superior properties,this sensor could be used as winter sportswear for athletes to track their actions without being impacted by water and as a warmer to ensure the wearer's comfort.

关键词： Multifunctional strain sensor Fabric surface modification Superhydrophobicity Photothermal Human movement detection

Role of intrinsic defects on carbon adsorbent for enhanced removal of Hg^(2+)in aqueous solution

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Chinese Journal of Chemical Engineering 2023年第9期61卷 129-139页

作者： Liu He Yiyang Qiu chu yao Guojun Lan Na Li Huacong Zhou Quansheng Liu Xiucheng Sun Zaizhe Cheng Ying Li Institute of Industrial Catalysis Zhejiang University of TechnologyHangzhou 310058China Inner Mongolia Key Laboratory of High-Value Functional Utilization of Low Rank Carbon Resources Huhhot 010051China

Carbon is a normally used adsorbent for removal of heavy metal ion in aqueous solutions,but the efficient adsorbent needs intensive modification by heteroatom doped or supported noble metals that cause severe pollution and easy leaching of active components during *** this paper,the role of intrinsic defects on Hg^(2+)adsorption for carbon adsorbent was *** maximum adsorbing capacity of defectrich carbon has been improved up to 433 mg·g^(-1)which is comparable to most of the modified carbon adsorbents via supported metal chloride or noble metal *** basicity is increased with the content of defective sites and the strong chemical bonding can be formed via electron transformation between the defect sites with adsorbed Hg^(2+).The present study gives a direction to explore cheap and easily scale-up high-performance mercury adsorbents by simply tuning the intrinsic defective structure of carbon without the necessity to support metal or other organic compounds.

关键词： Mercury-ion removal Adsorption Carbon adsorbent Defect sites

快速过滤净化-UPLC-MS/MS同时测定畜禽肉中12种兽药残留

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化学试剂 2024年第1期46卷 83-90页

作者：李楚瑶唐俊万亮郭雪梅陈春艳王姝南昌市检验检测中心南昌市保健食品及其接触材料质量安全风险评估重点实验室江西南昌330096

采用功能化聚苯乙烯/苯聚合物为填料的快速过滤净化柱萃取畜禽肉中的兽药,再结合超高效液相色谱-串联质谱(UPLC-MS/MS)高通量分析,建立了一种可同时测定12种兽药残留的方法。通过正交试验设计筛选前处理的最佳条件,样品经pH 4.0的EDTA-M... 详细信息

采用功能化聚苯乙烯/苯聚合物为填料的快速过滤净化柱萃取畜禽肉中的兽药,再结合超高效液相色谱-串联质谱(UPLC-MS/MS)高通量分析,建立了一种可同时测定12种兽药残留的方法。通过正交试验设计筛选前处理的最佳条件,样品经pH 4.0的EDTA-Mcllvaine缓冲液提取,按压式固相过滤柱快速净化,UPLC-MS/MS检测,外标法定量。结果表明,12种兽药在较宽的线性范围内拟合良好,相关系数均大于0.99,方法检出限0.3~3μg/kg,定量限1.0~10μg/kg。在3个不同添加水平下,猪肉、鸡肉、牛肉样品中的回收率分别为82.8%~110.4%、80.2%~108.4%、75.8%~107.1%,RSDs为0.51%~10.23%。该方法用于市售猪肉中的兽药检测,其中恩诺沙星、环丙沙星、金霉素、土霉素、四环素和强力霉素被检测出,与国标方法的测定结果相一致。该方法简单、快速、准确,适合多种兽药残留的同步筛查和准确定量。

关键词：超高液相色谱-串联质谱快速过滤净化兽药残留畜禽肉同步筛查

A preliminary study on life history of marine red alga Stylonema alsidii(Zandardini)Drew *** Zheng et Li

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Journal of Oceanology and Limnology 2024年第3期42卷 915-922页

作者： Bingxin HUANG yao ZHANG Yue chu Youxuan GUO Junxia LIANG Jianan QIN Lanping DING Tianjin Key Laboratory of Animal and Plant Resistance College of Life SciencesTianjin Normal UniversityTianjin 300387China

Stylonema alsidii(Zandardini)Drew *** Zheng et Li is a common species in the genus Stylonema,but there are limited reports on morphological taxonomy and a lack of studies on life history and the regulation of early *** early development,discoid formation,and erect thallus growth of Stylonema alsidii *** were observed under laboratory *** addition,the influence of main environmental factors such as temperature and light intensity on its development was briefly studied,and various stages of its life history were *** result shows:(1)there are two reproductive modes:asexual reproduction and sexual reproduction;(2)the morphology of this species varies in different degrees under laboratory culture conditions;(3)sexual reproduction and asexual reproduction can coexist under suitable *** pathways of life history were inferred from experimental *** sporophytes form mature gametophytes by producing initially isolated or initially attached monospore,and mature gametophytes form mature sporophytes by fertilization of eggs and *** sexual and asexual reproduction processes of Stylonema alsidii *** were reported for the first time,and this is also the first report on sexual reproduction in the genus Stylonema.

关键词： Stylonema alsidii(Zandardini)Drew f.ramosum Zheng et Li life history environmental factor asexual reproduction sexual reproduction

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高大超长单层钢结构刚架温度分析及优化设计

工程建设与设计 2024年第4期 19-21页

作者：孙必祥贝正其褚姚青郑益锋冉浚宏中机中联工程有限公司重庆400039 宁波方太厨具有限公司浙江宁波315336

通过对某高大超长单层钢结构厂房建筑的主刚架进行温度作用计算及对比分析,解决了高大超长刚架结构设计的温度影响问题,分析了温度作用、风荷载对高大超长单层钢结构刚架设计的主要影响,并根据主要影响因素探讨了不同的结构方案,提出了... 详细信息

通过对某高大超长单层钢结构厂房建筑的主刚架进行温度作用计算及对比分析,解决了高大超长刚架结构设计的温度影响问题,分析了温度作用、风荷载对高大超长单层钢结构刚架设计的主要影响,并根据主要影响因素探讨了不同的结构方案,提出了高大超长单层钢结构刚架的优化设计思路。

关键词：高大超长单层钢结构刚架温度分析优化设计

The Predictability Limit of Oceanic Mesoscale Eddy Tracks in the South China Sea

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Advances in Atmospheric Sciences 2024年第9期41卷 1661-1679页

作者： Hailong LIU Pingxiang chu yao MENG Mengrong DING Pengfei LIN Ruiqiang DING Pengfei WANG Weipeng ZHENG LASG Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Laoshan Laboratory Qingdao 266237China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Marine Science and Technology College Zhejiang Ocean UniversityZhoushan 316022China State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100872China Center for Monsoon System Research(CMSR) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100190China

Employing the nonlinear local Lyapunov exponent (NLLE) technique, this study assesses the quantitative predictability limit of oceanic mesoscale eddy (OME) tracks utilizing three eddy datasets for both annual and seasonal means. Our findings reveal a discernible predictability limit of approximately 39 days for cyclonic eddies (CEs) and 44 days for anticyclonic eddies (AEs) within the South China Sea (SCS). The predictability limit is related to the OME properties and seasons. The long-lived, large-amplitude, and large-radius OMEs tend to have a higher predictability limit. The predictability limit of AE (CE) tracks is highest in autumn (winter) with 52 (53) days and lowest in spring (summer) with 40 (30) days. The spatial distribution of the predictability limit of OME tracks also has seasonal variations, further finding that the area of higher predictability limits often overlaps with periodic OMEs. Additionally, the predictability limit of periodic OME tracks is about 49 days for both CEs and AEs, which is 5-10 days higher than the mean values. Usually, in the SCS, OMEs characterized by high predictability limit values exhibit more extended and smoother trajectories and often move along the northern slope of the SCS.

关键词： predictability mesoscale eddy nonlinear local Lyapunov exponent South China Sea seasonal variability