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The CDM:How Could China Utilize It to Finance Energy Efficiency?

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China's Foreign Trade 2009年第16期000卷 32-34页

作者： huo da School of Banking and Finance,University of International Business and Economics

Prelude of Copenhagen In the first round of China-US Strategic & Economic Dialogue, America's most senior climate-change officials were meeting their Chinese *** two countries are by far the world's biggest emitters of greenhouse *** will determine whether a worthwhile global treaty to limit emissions can be concluded as planned in Copenhagen in December.

关键词：清洁发展机制能源效率中国财务哥本哈根

High performance photodegradation resistant PVA@TiO_(2)/carboxyl-PES self-healing reactive ultrafiltration membrane

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Chinese Journal of Chemical Engineering 2024年第2期66卷 31-39页

作者： Yu Liang Yuanfang Fan Zhongmin Su Mingxin huo Xia Yang Hongliang huo Chi Wang Zhi Geng College of Environment Engineering Research Center of Low-Carbon Treatment and Green Development of Polluted Water in Northeast ChinaMinistry of EducationNortheast Normal UniversityChangchun 130117China School of Science Hainan UniversityHaikou 570225China

The occurrence of ultrafiltration(UF)membrane fouling frequently hampers the sustainable advancement of UF *** self-cleaning UF membranes can effectively alleviate the problem of membrane ***,the self-cleaning process may accelerate membrane *** these concerns,we present an innovative design concept for composite self-healing materials based on self-cleaning UF *** begin,TiO_(2)nanoparticles were incorporated into the polymer molecular structure via molecular design,resulting in the synthesis of TiO_(2)/carboxyl-polyether sulfone(PES)hybrid ***,the nonsolvent-induced phase inversion technique was employed to prepare a novel of UF ***,a polyvinyl alcohol(PVA)hydrogel coating was applied to the hybrid UF membrane surface to create PVA@TiO_(2)/carboxyl-PES self-healing reactive UF *** establishing a covalent bond,the TiO_(2)nanoparticles were effectively and uniformly dispersed within the UF membrane,leading to exceptional self-cleaning ***,the water-absorbing and swelling properties of PVA hydrogel,along with its capacity to form hydrogen bonds with water molecules,resulted in UF membranes with improved hydrophilicity and active self-healing *** results demonstrated that the water contact angle of PVA@5%TiO_(2)/carboxyl-PES UF membrane was 43.1°.Following a 1-h exposure to simulated solar exposure,the water flux recovery ratio increased from 48.16%to 81.03%.Moreover,even after undergoing five cycles of 12-h simulated sunlight exposure,the UF membranes exhibited a consistent retention rate of over 97%,thus fully demonstrating their exceptional self-cleaning,antifouling,and selfhealing *** anticipate that the self-healing reactive UF membrane system will serve as a pioneering and comprehensive solution for the self-cleaning antifouling challenges encountered in UF membranes while also effectively mitigating the aging effects of reactive

关键词： Ultrafiltration membrane Self-cleaning Self-healing Poly(aryl ether sulfone)

血清内脂素作为人体衰老生物学标志物的相关性研究

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医学研究杂志 2024年第4期53卷 29-34页

作者：刘媛媛王瑶霍达李雪飞曾律滔范国庆张立群庞婧张铁梅蔡剑平崔菊北京医院、国家老年医学中心、国家卫生健康委北京老年医学研究所、国家卫生健康委北京老年医学重点实验室、中国医学科学院老年医学研究院 100730 中国科学院深圳先进技术研究院、深圳合成生物学创新研究院、中国科学院定量工程生物学重点实验室 518055

目的探讨血清内脂素水平作为评估人体衰老程度的生物学标志物的潜力。方法共招募248例年龄25~90岁的受试者,采用酶联免疫吸附试验测定血清内脂素水平,结合各项身体指标进行统计学分析。结果 Spearman相关性分析结果显示,血清内脂素水... 详细信息

目的探讨血清内脂素水平作为评估人体衰老程度的生物学标志物的潜力。方法共招募248例年龄25~90岁的受试者,采用酶联免疫吸附试验测定血清内脂素水平,结合各项身体指标进行统计学分析。结果 Spearman相关性分析结果显示,血清内脂素水平与年龄呈负相关(r=-0.186,P=0.003)。将受试者按年龄分为3个区间,采用方差分析或秩和检验结果显示,年龄与血清内脂素水平、估算肾小球滤过率、胰岛素样生长因子1、免疫球蛋白M呈负相关;与体重指数、腰臀比、全身脂肪质量、全身脂肪质量指数、D-3羟基丁酸、游离脂肪酸、空腹血糖、胰岛素、胰岛素抵抗指数、胆碱酯酶、乳酸脱氢酶、谷丙转氨酶、谷草转氨酶、谷氨酰转肽酶、血清肌酐、血尿素氮、胱抑素C、血清同型半胱氨酸呈正相关。将受试者按血清内脂素水平分为3个区间,采用方差分析或秩和检验结果显示,血清内脂素水平与血清同型半胱氨酸(P=0.001)呈负相关,与IgM (P=0.013)呈正相关。结论血清内脂素水平随年龄增加而降低,是一种潜在的衰老生物学标志物。

关键词：内脂素衰老生物学标志物细胞因子酶联免疫吸附试验

管理层能力与企业环境信息披露——基于权力距离与市场化进程调节作用视角

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上海财经大学学报（哲学社会科学版） 2018年第3期20卷 79-92页

作者：李虹霍达天津理工大学管理学院天津300384

文章以2011–2016年沪深两市重污染行业上市公司作为研究样本,建立DEA–Tobit模型来衡量管理层能力并进行实证研究,结果表明管理层能力与企业环境信息披露质量正相关。进一步研究发现,基于中国文化情境提出的权力距离会对管理层能力与... 详细信息

文章以2011–2016年沪深两市重污染行业上市公司作为研究样本,建立DEA–Tobit模型来衡量管理层能力并进行实证研究,结果表明管理层能力与企业环境信息披露质量正相关。进一步研究发现,基于中国文化情境提出的权力距离会对管理层能力与企业环境信息披露质量相关性起调节作用,当董事长—总经理权力距离较高时,会显著抑制管理层能力对企业环境信息质量的提升作用。同时,中国各地区市场化程度不均衡,在市场化进程较快的情境下,管理层能力对企业环境信息披露质量的正向作用更加明显。通过检验企业内外部因素对管理层能力与环境信息披露相关性的调节作用研究,以期能够为激励和约束企业履行环境责任、提高环境信息披露质量提供对策建议。

关键词：企业环境信息披露管理层能力权力距离市场化进程

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复合矿物质超细粉对水泥石自收缩影响效应

北京工业大学学报 2008年第3期34卷 288-291页

作者：李悦郭毅霖霍达北京工业大学城市与工程安全减灾省部共建教育部重点实验室北京100022 交通部公路科学研究院北京100088

为了探讨复合矿物质超细粉对水泥石自收缩的影响规律,将硅灰与粉煤灰、磨细矿渣与粉煤灰2种复合掺合料分别加入水泥浆体中,通过改变粉煤灰与硅灰的质量比、粉煤灰与磨细矿渣的质量比。测量其自收缩量,发现粉煤灰能抑制自收缩,磨细矿渣... 详细信息

为了探讨复合矿物质超细粉对水泥石自收缩的影响规律,将硅灰与粉煤灰、磨细矿渣与粉煤灰2种复合掺合料分别加入水泥浆体中,通过改变粉煤灰与硅灰的质量比、粉煤灰与磨细矿渣的质量比。测量其自收缩量,发现粉煤灰能抑制自收缩,磨细矿渣和硅灰促进自收缩,当粉煤灰与硅灰或磨细矿渣复配时.抑制自收缩的作用和硅灰与粉煤灰的质量比或硅灰与磨细矿渣的质量比显著相关.

关键词：复合矿物质超细粉自收缩粉煤灰磨细矿渣硅灰

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数值模拟软夹层对基岩上覆土层破裂的影响

北京工业大学学报 2007年第3期33卷 289-292页

作者：赵雷李小军霍达中国地震局工程力学研究所哈尔滨150080 北京工业大学建工学院北京100022

为了了解软夹层对基岩上覆土层破裂的影响,确定土层的破裂范围,采用平面应变有限元法,模拟了有软夹层的上覆土层在断层错动时的破裂过程．从模拟的结果看出,软夹层对上覆土层破裂有一定的阻碍作用;当软弱层埋置较深时,一旦上覆土层破裂... 详细信息

为了了解软夹层对基岩上覆土层破裂的影响,确定土层的破裂范围,采用平面应变有限元法,模拟了有软夹层的上覆土层在断层错动时的破裂过程．从模拟的结果看出,软夹层对上覆土层破裂有一定的阻碍作用;当软弱层埋置较深时,一旦上覆土层破裂,失效土体的范围较大;软弱夹层的厚薄对上覆土层的破裂进程和破裂范围也有影响．

关键词：断层错动有限元地震作用软夹层上覆土层

环境激励下桥梁结构模态识别与损伤检测的新方法

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公路交通科技 2005年第5期22卷 93-96页

作者：李大军霍达北京工业大学建筑工程学院北京100022

已有的环境激励下模态参数识别的方法对模态频率的识别精度相对较高,而对位移模态的识别则误差较大。本文提出一种利用移动质量块在不同位置时对桥梁的模态频率进行多次测量,用各次测得的频率值确定位移模态的新方法,使得位移模态识别... 详细信息

已有的环境激励下模态参数识别的方法对模态频率的识别精度相对较高,而对位移模态的识别则误差较大。本文提出一种利用移动质量块在不同位置时对桥梁的模态频率进行多次测量,用各次测得的频率值确定位移模态的新方法,使得位移模态识别的精度接近频率识别的精度,推导了频率与位移模态关系的理论公式,并给出利用以曲率形式表示的单元模态应变能对结构进行损伤标定的基本方法。最后,通过数值模拟对该方法的有效性进行说明。

关键词：桥梁模态识别损伤诊断环境激励

Robust Interval State Estimation for Distribution Systems Considering Pseudo-measurement Interval Prediction

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Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 179-188页

作者： Xu Zhang Wei Yan Meiqing huo Hui Li the School of Electrical Engineering Chongqing UniversityChongqing 400044China

Interval state estimation(ISE)can estimate state intervals of power systems according to confidence intervals of predicted pseudo-measurements,thereby analyzing the impact of uncertain pseudo-measurements on ***,predicted pseudo-measurements have prediction errors,and their confidence intervals do not necessarily contain the truth values,leading to estimation biases of the *** solve this problem,this paper proposes a pseudo-measurement interval prediction framework based on the Gaussian process regression(GPR)model,thereby improving the prediction accuracy of pseudo-measurement confidence ***,a weight assignment strategy for improving the robustness of weighted least squares(WLS)ISE is *** strategy quantifies the deviation between the pseudo-measurement intervals and their estimated intervals and assigns smaller weights to the pseudo-measurement intervals with larger deviations,thereby improving the estimation accuracy and robustness of the *** paper adopts the data from the supervisory control and data acquisition(SCAda)system of the New York Independent System Operator(NYISO).It verifies the advantages of the GPR method for pseudo-measurement interval prediction by comparing it with the quantile regression and neural network *** addition,this paper demonstrates the effectiveness of the proposed weight assignment strategy through the IEEE 14-bus ***,the differences in the estimation accuracy and the bad data identification between the robust interval state estimation and deterministic state estimation are discussed.

关键词： Interval state estimation interval analysis pseudo-measurement Gaussian process regression(GPR)

Moving Epidemic Method for Surveillance and Early Warning of Hand, Foot, and Mouth Disease in Beijing, China

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Biomedical and Environmental Sciences 2023年第12期36卷 1162-1166页

作者： DONG Shuai Bing WANG Yu huo da ZHAO Hao LIU Bai Wei LI Ren Qing GAO Zhi Yong WANG Xiao Li ZHANG dai Tao WANG Quan Yi JIA Lei YANG Peng Institute of Infectious and Endemic Diseases Control Beijing Center for Disease Prevention and ControlBeijing 100013China School of Public Health Capital Medical UniversityBejjing 100069China Beijing Office of Center for Global Health Beiing Center for Disease Prevention and ControlBeijing 100013China

Hand,foot,and mouth disease (HFMD) is an acute infection caused by enteroviruses that is commonly seen in children^([1]).High infectivity,large number of asymptomatic infections,complex transmission routes,and rapid spread make it difficult to control *** 2008,China has reported> 23 million HFMD cases,including>0.15million severe cases^([2]).HFMD tops the list of notifiable infectious diseases in terms of case number and incidence rate,leading to a huge disease burden^([3]).Timely and accurate assessment of HFMD epidemics is essential for a holistic understanding of the outbreaks and for effective prevention and control ***,there are no quantitative indicators to determine the duration and intensity of HFMD epidemics in Beijing.

关键词： prevention acute diseases