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Review on formation mechanism analysis method and control strategy of urban haze in China

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Chinese Journal of Chemical Engineering 2019年第7期27卷 1572-1577页

作者： Weiqing Huang Lirong Cai Haifeng Dang zhe jiao Hongbo Fan Faliang Cheng School of Environment and Civil Engineering Guangdong Engineering and Technology Research Center for Advanced NanomaterialsDongguan University of TechnologyDongguan 523808China Guangdong Provincial Key Lab of Green Chemical Product Technology South China University of TechnologyGuangzhou 510640China

Due to the rapid urbanization and industrialization,and excessive consumption of fossil fuel,haze weather characterized by PM2.5 has become a severe pollution problem in major Chinese cities recently,which has harmful effect on the air quality,visibility,clime system and human *** indicate suitable directions for the prevention and control of haze pollution,the pollutant source apportionment and formation mechanism of urban haze should be figured out *** this work,we briefly review the frequently-used methods for PM2.5 source apportionment and formation mechanism analysis of urban haze based on normal perspective in recent ***,based on the new perspective of systematic methodology,the utilization of fault tree approach for the causation mechanism analysis of urban haze is significantly introduced and ***,the recent progress on controlling strategies of urban haze in China is also synoptically introduced and *** is expected that more effective tool/method can be found,developed and employed for the causation mechanism analysis and risk management of urban haze in China.

关键词： Urban haze Fossil fuel Formation Sustainability

Cementitious property of NaAlO2-activated Ge slag as cement supplement

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International Journal of Minerals,Metallurgy and Materials 2019年第12期26卷 1594-1603页

作者： Hua-zhe jiao Shu-fei Wang Ai-xiang Wu Hui-ming Shen Jian-dong Wang International Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention Henan Polytechnic UniversityJiaozuo 454000China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China

Germanium(Ge),a waste residue leaching from zinc(Zn)smelting process,has potential cementitious properties and could be recycled as a cement supplement activated by chemical *** this work,a test was conducted to determine the hydration properties of Ge slag-cement-based composites with Ge slag(GS)/ordinary Portland cement(PC)contents of 0wt%,5wt%,10wt%,15wt%,20wt%,and 25wt% and water-to-binder ratio(w/b)of *** activators Ca(OH)2,AlCl3,NaAlO2,and Na2CO3 were mixed under 1wt%,2wt%,3wt%,and 4wt% dosages of GS *** composition and microstructure of the hydration products were investigated by the combined approaches of X-ray diffraction(XRD),thermogravimetry-differential scanning calorimetry(TG-DSC),scanning electron microscopy(SEM),and energy-dispersive X-ray spectroscopy(EDS).First,the GS cementitious property is attributed to the high content of CaSO4·***,the activators affected the acceleration performance in the following order:NaAlO2,Na2CO3,AlCl3,and Ca(OH)*** importantly,the 28-day unconfined compressive strength(UCS)is 45.34 MPa at the optimum formula of 0.6wt% NaAlO2,15wt% GS,and 85wt% PC,which is 9.16% higher than the ***,NaAlO2 is beneficial for the ettringite(AFt)generation,resulting in the C-S-H structure ***,the Zn^2+ residue inhibited the AFt formation,representing an important challenge to the strength growth with curing ***,the GS could be recycled as a supplement to the cement under the activator NaAlO2.

关键词： Ge slag from zinc process recycling activator cement supplements strength

Disease and Economic Burden of Kashin-Beck Disease—China,2021

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China CDC weekly 2024年第2期6卷 40-44页

作者： Silu Cui Wenjun Que zhe jiao Qing Deng Xufeng Zhang Yanhong Cao Ning Liu Ailin Li Alphonse Sowanou zhe Li Tuo Wang Yang Li Jun Yu Junrui Pei NHC Key Laboratory of Etiology and Epidemiology(Harbin Medical University) Key Laboratory of Etiology and EpidemiologyEducation Bureau of Heilongjiang ProvinceInstitute of Kashin-Beck Disease ControlCenter for Endemic Disease ControlChinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin CityHeilongjiang ProvinceChina NHC Key Laboratory of Etiology and Epidemiology(Harbin Medical University) Heilongjiang Provincial Key Laboratory of Trace Elements and Human HealthKey Laboratory of Etiology and EpidemiologyEducation Bureau of Heilongjiang ProvinceInstitute of Endemic Fluorosis ControlCenter for Endemic Disease ControlChinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin CityHeilongjiang ProvinceChina

What is already known about this topic?Kashin-Beck disease(KBD)is a chronic and degenerative osteoarthropathy characterized by cartilage *** is an endemic disease that is highly prevalent among the Chinese population and poses a significant health *** is added by this report?This is the first national report on the economic burden of KBD in *** to the data from 2021,KBD has caused significant disease and economic *** most substantial reduction in healthy life expectancy was observed among patients with degree II severity and those aged 60 years and older,resulting in a total indirect economic burden of 112.74 million Chinese Yuan(CNY).What are the implications for public health practice?The results of this study will contribute to informing the development of tailored prevention and control strategies by the *** strategies will include targeted policies and recommendations for appropriate healthcare and financial subsidies,which will be based on the demographic characteristics of the endemic areas.

关键词： prevention degeneration burden

Summary Analysis of National Surveillance on Kashin-Beck Disease from 1990 to 2023

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Biomedical and Environmental Sciences 2024年第9期37卷 1056-1066页

作者： Silu Cui Hui Liu Junrui Pei Jiaxin Li zhe jiao Qing Deng Ning Liu Yanhong Cao Jun Yu Center for Endemic Disease Control Chinese Center for Disease Control and PreventionHarbin Medical UniversityHarbin 150081China NHC Key Laboratory of Etiology and Epidemiology(Harbin Medical University) Key Laboratory of Etiology and EpidemiologyEducation Bureau of Heilongjiang ProvinceHarbin Medical UniversityHarbin 150081China

Objective To analyze the epidemiological characteristics and epidemic situation of children with Kashin-Beck disease(KBD)in China,and provide the basis for formulating prevention and control *** Fixed-point monitoring,moving-point monitoring,and full coverage of monitoring were promoted successively from 1990 to *** children(7-12 years old)underwent clinical and right-hand X-ray examinations every *** to the KBD diagnosis criteria,clinical and X-ray assessments were used to confirm the *** In 1990,the national KBD detectable rate was 21.01%.X-ray detection decreased to below 10%in 2003 and below 5%in *** 2010 and 2018,the prevalence of KBD in children was less than 0.4%,which fluctuated at a low level,and has decreased to 0%since *** epidemiological analysis indicated a spatial clustering of adult patients prevalence rate in the KBD *** The evaluation results of the elimination of KBD in China over the last 5 years showed that all villages in the monitored areas have reached the elimination *** the adult KBD patients still need for policy consideration and care.

关键词： Kashin-Beck disease Geographic Information System National surveillance X-ray detective rate

Computational Prediction of the Specificities of Proteasome Interaction With Antigen Protein

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Cellular & Molecular Immunology 2009年第2期6卷 135-142页

作者： Tao Liu Wei Liu zhe Song Chunbo jiao Minghua Zhu Xiaogang Wang College of Advanced Science and Technology Dalian University of Technology Dalian 116023 China

In the processing and presentation of antigenic peptides bound by the major histocompatibility complex （MHC） class I molecule, the ubiquitin-proteasome system of the eukaryotic cells plays an important role in proteolysis and degradation. The ubiquitinated protein substrate is delivered into the 26S proteasome to be digested and degraded. The proteasome degrading substrate is actually protein-protein interactions. Some researches of predicting proteasome cleave site rarely gave the information of the proteasome interacting with its substrate, and so the accuracy and reliability of these proteasome cleavage predictive methods still need to be improved. This paper used support vector machine method （SVM） to predict the proteasomal cleavage sites, and the predictive accuracy of the model was 82.8%. We showed analytically that the cleavage specificities of the cleavage sites ＂ ι＂ and its adjacent positions, and gave the information about the proteasome interacting with its substrate from our research results. It demonstrates that the proteasome cleaving to target protein is selective, but not random.

关键词： proteasome major histocompatibility complex support vector machine

Effects of somatostatin analog on splanchnic hemodynamics and plasma glucagon level in portal hypertensive rats

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World Journal of Gastroenterology 1997年第4期3卷 20-22页

作者： WU ZhiYong, ZHANG XiaoJie, jiao zhe, CHEN ZhiPing and KUANG YaoLing

IM To investigate the effects of somatostatin analog on splanchnic hemodynamics and plasma glucagon level in portal hypertensive rats.METHODS Twentyeight male SpragueDawley rats were divided into two groups: intrahepatic portal hypertension (IHPH, n=14) by injection of CCl4 and prehepatic portal hypertension (PHPH, n=14) by stenosis of the portal vein. Animals of each group were divided into two subgroups: injection of octreotide and injection of normal saline. Seven agematched normal rats served as controls. The mean systemic arterial pressure (MSAP) and free portal venous pressure (FPP) were measured. The splanchnic blood flow was detected by injection of toad blood red cell labelled with 51Cr and 125I·T3. The concentration of plasma glucagon was determined by radioimmunoassay.RESULTS Octreotide significantly decreased both the splanchnic blood flow and FPP in portal hypertensive rats, and markedly increased splanchnic vascular and portal venous resistance. Octreotide did not significantly lower the plasma glucagon levels in both the peripheral and the portal veins.CONCLUSION The decreased splanchnic blood flow induced by octreotide in portal hypertensive rats results mainly from direct vasoconstriction but less from decreased plasma glucagon level.

关键词： portal hypertension octreotide glucagon splanchnic hemodynamics somatostatin analog

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高速转动圆盘流动数值模拟研究

计算力学学报 2016年第4期33卷 588-593页

作者：焦哲符松清华大学航天航空学院北京100084

重点研究高速离心压气机叶轮与机匣间的间隙流动及其温度分布。研究将离心压气机简化为高速转动圆盘,搭建了相关实验平台,并开展了相应的数值模拟研究。通过改变转动圆盘的转速和轴向进入的冷却流的流量,研究了转速和流量对于间隙内温... 详细信息

重点研究高速离心压气机叶轮与机匣间的间隙流动及其温度分布。研究将离心压气机简化为高速转动圆盘,搭建了相关实验平台,并开展了相应的数值模拟研究。通过改变转动圆盘的转速和轴向进入的冷却流的流量,研究了转速和流量对于间隙内温度和速度分布的影响。结果显示,转速是影响温度变化的最主要因素,转速越大,温度越高;同等幅度的流量变化对温度的影响则较小。研究发现,在实验和模拟对应的大雷诺数条件下,无量纲的速度分布基本不受到圆盘转速、冷却流量和温度场的影响。

关键词：旋转流动高速压气机来流冷却温度分布

Creation of multi-frequency terahertz waves by optimized cascaded difference frequency generation

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Chinese Physics B 2022年第4期31卷 356-360页

作者： Zhong-Yang Li Jia Zhao Sheng Yuan Bin-zhe jiao Pi-Bin Bing Hong-Tao Zhang Zhi-Liang Chen Lian Tan Jian-Quan Yao College of Electric Power North China University of Water Resources and Electric PowerZhengzhou 450045China College of Precision Instrument and Opto-electronics Engineering Institute of Laser and Opto-electronicsTianjin UniversityTianjin 300072China

A new scheme which generates multi-frequency terahertz(THz)waves from planar waveguide by the optimized cascaded difference frequency generation(OCDFG)is proposed.A THz wave with frequencyω_(T1)is generated by the OCDFG with two infrared pump waves,and simultaneously a series of cascaded optical waves with a frequency intervalω_(T1)is *** THz wave with a frequency of M-timesω_(T1)is generated by mixing the m-th-order and the(m+M)-th-order cascaded optical *** phase mismatch distributions of cascaded difference frequency generation(CDFG)are modulated by changing the thickness of planar waveguide step by step,thereby satisfying the phase-matching condition from first-order to high-order cascaded Stokes process step by *** a result,the intensity of THz wave can be enhanced and modulated by controlling the cascading order of OCDFG.

关键词： multi-frequency terahertz wave optimized cascaded difference frequency generation planar waveguide

高职金融人才“岗课赛证创”综合育人模式功能价值与路径研究--基于“政、企、家、校”协同的视角

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教育理论与实践 2023年第30期43卷 25-29页

作者：焦喆河南经贸职业学院河南郑州450000

“岗课赛证创”综合育人模式的特点是以“点”为融入,匹配岗位需要;以“线”为逻辑,深化赛证融合;以“面”为拓展,培养创新能力。金融专业实践教学改革顺应“岗课赛证创”综合育人的发展趋势,面临数字化金融技能创新的紧迫形势,它是构... 详细信息

“岗课赛证创”综合育人模式的特点是以“点”为融入,匹配岗位需要;以“线”为逻辑,深化赛证融合;以“面”为拓展,培养创新能力。金融专业实践教学改革顺应“岗课赛证创”综合育人的发展趋势,面临数字化金融技能创新的紧迫形势,它是构建五位一体,拓展补充的实践教学体系的必然选择;是加强数字“双师型”师资队伍建设内在要求;是校企资源整合,场地设备更新的现实需要。“岗课赛证创”综合育人模式的实施路径是“课证”融通,加强政策的出台、“岗课”共设,促进企业的参与、“赛创”互促、重视家校的培养、“产教”并举,打造“双师型”师资。

关键词：高职院校金融专业 “岗课赛证创”综合育人模式 “双师型”师资队伍五位一体资源整合