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China CDC weekly 2022年第27期4卷 593-600页

作者： Heming Pei Ning Kang Fan yang Xinming Song Gong Chen dongmin Wang Institute of Population Research/Institute on Aging Peking UniversityBeijingChina Department of Physical Education Peking UniversityBeijingChina.

Summary What is already known about this topic?Available evidence suggested that 31%of the world’s population do not meet the minimum recommendations for physical activity.What is added by this report?The latest findings showed that physical activity level(PAL),metabolic equivalents(MET)in min/week with<4,500(low),4,500–6,000(moderate)and≥6,000(high)accounted for 45.72%,25.62%,and 28.66%of middle-aged and elderly population in Changchunyuan Community,Weixiuyuan Community,Zhongguanyuan Community,Yanbeiyuan Community,Kangzeyuan Community,and Xima Community,respectively.The moderate and high PAL was associated with a decreased risk of hypertension,cardiovascular disease,dyslipidemia,and poor sleep.What are the implications for public health practice?More attention should be given to the middle-aged population who may be at high risk of insufficient physical activity in urban environments as it is of public health significance for improving the community population health.

关键词： Population Beijing Middle

Microbial community structure analyses and cultivable denitrifier isolation of Myriophyllum aquaticum constructed wetland under low C/N ratio

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Journal of Environmental Sciences 2023年第5期127卷 30-41页

作者： Jialiang Zuo Lina Xu Jianlin Guo Shengjun Xu Shuanglong Ma Cancan Jiang Dongmin Yang Danhua Wang Xuliang Zhuang Key Laboratory of Environmental Biotechnology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Sino-Danish Center University of Chinese Academy of SciencesBeijing 101408China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100101China College of Resources and Environmental Sciences Henan Agricultural UniversityZhengzhou 450002China Ningxia Zhongke Jingke Testing Technology Company Yinchuan 750000China

With the rapid expansion of livestock production,the amount of livestock wastewater accumulated rapidly.Lack of biodegradable organic matter makes denitrification of livestock wastewater after anaerobic digestion more difficult.In this study,Myriophyllum aquaticum constructed wetlands(CWs)with efficient nitrogen removal performance were established under different carbon/nitrogen(C/N)ratios.Analysis of community composition reveals the change of M.aquaticum CWs in microbial community structure with C/N ratios.The proportion of Proteobacteria which is one of the dominant phyla among denitrifier communities increased significantly under low C/N ratio conditions.Besides,to obtain cultivable denitrifier that could be added into CWs in situ,33 strains belonging to phylum Proteobacteria were isolated from efficient M.aquaticum CWs,while the best-performing denitrification strain M3-1 was identified as Bacillus velezensis JT3-1(GenBank No.CP032506.1).Redundancy analysis and quadratic models showed that C/N ratio had significant effects on disposal of nitrate(NO_(3)^(−)-N)and the strains isolated could perform well in denitrification when C/N ratio is relatively low.In addition,they have relatively wide ranges of carbon sources,temperature and a high NO_(3)^(−)removal rate of 9.12 mg/(L·hr)at elevated concentrations of 800 mg/L nitrate.Thus,strains isolated from M.aquaticum CWs with low C/N ratio have a practical application value in the treatment of nitrate-containing wastewater.These denitrifying bacteria could be added to CWs to enhance nitrogen removal efficiency of CWs for livestock wastewater with low C/N ratio in the future.

关键词： Myriophyllum aquaticum constructed wetlands Denitrification Microbial community structure Bacillus velezensis

Three-dimensional morphological and fluorescent imaging of zebrafish with a continuous-rotational light-sheet microscope

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Journal of Innovative Optical Health Sciences 2024年第2期17卷 59-66页

作者： dongmin Zhang Guang yang Yao Tan Chong Chen Jie Zhang Hui Li School of Biomedical Engineering(Suzhou)Division of Life Sciences and Medicine University of Science and Technology of China Hefei 230041 P.R.China Suzhou Institute of Biomedical Engineering and Technology Chinese A cademy of Sciences Suzhou Jiangsu 215163P.R.China

Light-sheet fluorescence microscopy(LSFM)has been widely used to image the three-dimensional(3D)structures and functions of various millimeter-size bio-specimen such as zebrafish.However,the sample adsorption and scattering cause shading of the light-sheet illumination,preventing the even 3D image of thick samples.Herein,we report a continuous-rotational light-sheet microscope(CR-LSM)that enables simultaneous 3D bright-field and fluorescence imaging.With a high-accuracy rotational stage,CR-LSM records the outline projections and the fluorescent images of the sample at multiple rotation angles.Then,3D morphology and fluorescent structure were reconstructed with a developed algorithm.Using CR-LSM,zebrafish’s whole-fish contour and blood vessel structures were obtained simultaneously.

关键词： Light-sheet microscope zebrafish blood vessels morphology

Prediction of geotemperatures in coal-bearing strata and implications for coal bed methane accumulation in the Bide-Santang basin,western Guizhou,China

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International Journal of Mining Science and Technology 2020年第2期30卷 235-242页

作者： Chen Guo Yong Qin dongmin Ma Zhaobiao yang Lingling Lu College of Geology and Environment Xi’an University of Science&TechnologyXi’an 710054China Stations for Post-doctoral Research of Geological Resources and Geological Engineering Xi’an University of Science and TechnologyXi’an 710054China Key Laboratory of CBM Resources and Reservoir Formation Process Ministry of EducationChina University of Mining&TechnologyXuzhou 221116China

The geothermal fields of coal-bearing strata have become a key topic in geological research into coal and coal bed methane(CBM).Based on temperature data from 135 boreholes that penetrate the Upper Permian coal-bearing strata in the Bide-Santang basin,western Guizhou,the precisions of geothermal predictions made using a geothermal gradient model and a gray sequence GM(1,1)model are analyzed and compared.The results indicate that the gray sequence GM(1,1)model is more appropriate for the prediction of geothermal fields.The GM(1,1)model is used to predict the geothermal field at three levels with depths of 500,1000,and 1500 m,as well as within the No.6,No.16,and No.27 coal seams.The results indicate that the geotemperatures of the 500 m depth level are between 21.0 and 30.0°C,indicating no heat damage;the geotemperatures of the 1000 m depth level are between 29.4 and 44.7°C,indicating the first level of heat damage;and the geotemperatures of the 1500 m depth level are between35.6 and 63.4°C,indicating the second level of heat damage.The CBM contents are positively correlated with the geotemperatures of the coal seams.The target area for CBM development is identified.

关键词： Geotemperature Gray sequence Geothermal gradient Heat damage Coal Coal bed methane

An Experimental Study on the Conductivity Changes in Coal during Methane Adsorption-Desorption and their Influencing Factors

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Acta Geologica Sinica(English Edition) 2019年第3期93卷 704-717页

作者： CHEN Yue MA dongmin GUO Chen yang Fu MU Tian GAO Zheng College of Geology and Environment Xi'an University of Science and TechnologyXi'an 710054ShaanxiChina Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Land and ResourcesXi'an 710021ShaanxiChina Post-doctorate R&D Base of Geological Resources and Geological Engineering Xi'an University of Science and TechnologyXi'an 710054ShaanxiChina Geological Research Institute for Coal Green Mining Xi'an University of Science and TechnologyXi'an 710054ShaanxiChina

During the processes of methane adsorption and desorption,the internal structure of coal changes,accordingly leading to changes in electrical conductivity.In this paper,using low rank coal seams of the Yan'an Formation in the Dafbsi field as the research subject,the relationship between coal resistivity,methane adsorption quantity,and equilibrium pressure is analyzed through proximate analysis,mercury injection tests,low temperature liquid nitrogen adsorption tests,and coal resistivity measurements during methane adsorption and desorption.The results show that during the process of pressure rise and methane adsorption,the conductivity of coal increases,resulting from heat release from methane adsorption,coal matrix swelling and adsorbed water molecules replaced by methane,but the resistivity reduction gradually decreases.The relationship between coal resistivity and methane adsorption quantity and equilibrium pressure can be described by a quadratic function.During the processes of depressurization and desorption,the resistivity of coal rebounds slightly,due to decalescence of methane desorption,coal matrix shrinkage and water-gas displacement,and the relationship coincides with a linear function.Methane adsorption leads to irreversible changes in coal internal structure and enhances the coal conductivity,and resistivity can not be restored to the initial level even after methane desorption.The resistivity and reduction rate of durain are higher than those of vitrain,with relatively greater homogeneous pore throat structure and fewer charged particles in the double electric layer.In addition,moisture can enhance the conductivity of coal and makes it change more complexly during methane adsorption and desorption.

关键词： coal reservoir adsorption-desorption electric resistivity lithotype moisture

Single-cell RNA sequencing reveals B cell-T cell interactions in vascular adventitia of hyperhomocysteinemia-accelerated atherosclerosis

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Protein & Cell 2022年第7期13卷 540-547页

作者： Xiaolong Ma Jiacheng Deng Lulu Han Yuwei Song Yutong Miao Xing Du Guohui Dang Dongmin Yang Bitao Zhong Changtao Jiang Wei Kong Qingbo Xu Juan Feng Xian Wang Department of Physiology and Pathophysiology School of Basic Medical SciencesKey Laboratory of Molecular Cardiovascular ScienceMinistry of EducationPeking UniversityBeijing 100191China Cardiovascular Division BHF Center of Vascular RegenerationKing's College LondonLondonUK Department of Clinical Laboratory Beijing Chao-Ya ng HospitalCapital Medical UniversityBeijing 100020China Department of Cardiology The First Affiliated HospitalZhejiang UniversityHangzhou 310003China

Dear Editor Cardiovascular disease(CVD)is the leading cause of death around the world(Truelsen,et al.,2015).Atherosclerosis,the dominant underlying cause of CVD,is a chronic inflam-matory disease characterized by lipid accumulation and immune cell infiltration in plaques and vessels(Weber,et al.,1950).The immune microenvironment is critical for the development of atherosclerosis.Homocysteine(Hcy)is an intermediate product of methionine metabolism,and its ele-vation in plasma(>15μmol/L),known as hyperhomocys-teinemia(HHcy),is an independent risk factor for atherosclerosis.HHcy is more common in Asia because of genetic factors and dietary habits(Huo,et al.,2015).folic acid supplement is one of the most important way to treat HHcy in clinic.Although HHcy potentiates atherosclerosis mainly through endothelial injury and inflammatory activa-tion(Luo,et al.,2016),a comprehensive understanding of the immune microenvironment and potential mechanisms in HHcy-accelerated atherosclerotic aortas(HHcy-AA)is still lacking.

关键词： atherosclerosis al. metabolism

MTI教育与翻译资格考试的衔接:现状与建议

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北京第二外国语学院学报 2023年第2期45卷 48-59页

作者：杨冬敏陕西师范大学外国语学院 710062

作为一种专业学位教育,MTI教育需要加强与翻译行业及语言服务业的联系,而翻译资格考试在翻译行业中的地位和作用决定了在MTI教育和翻译资格考试之间建立衔接机制的必要性。本研究调研分析了国内外专业翻译人才培养和翻译资格考试的衔接... 详细信息

作为一种专业学位教育,MTI教育需要加强与翻译行业及语言服务业的联系,而翻译资格考试在翻译行业中的地位和作用决定了在MTI教育和翻译资格考试之间建立衔接机制的必要性。本研究调研分析了国内外专业翻译人才培养和翻译资格考试的衔接现状,在此基础上,提出我国MTI教育和翻译资格考试的衔接机制应当由保障机制、执行机制和奖惩机制3个部分组成,要求MTI教育和翻译资格考试的组织与管理部门、MTI培养单位以及MTI专业教师积极行动起来,共同促进两者的衔接,从而保证MTI教育培养目标的实现,促进翻译资格考试的健康发展,并最终推动我国翻译行业和语言服务业的职业化进程。

关键词： MTI教育翻译资格考试全国翻译专业资格(水平)考试衔接机制

Synergistic effect of W and P on ZSM-5 and its catalytic performance in the cracking of heavy oil

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Journal of Energy Chemistry 2014年第4期23卷 519-526页

作者： dongmin Han Nannan Sun Jianwei Liu Chunyi Li Honghong Shan Chaohe yang State Key Laboratory of Heavy Oil Processing China University of Petroleum (East China)

In order to develop the conversion of heavy oil with a high yield of propylene in the catalytic cracking process, ZSM-5 zeolite was modified by tungsten and phosphorus, which was proved to be an effective method. Characterization results show that the improvement of catalytic performance could be correlated to the interaction of phosphorus and tungsten species on ZSM-5. P inhibited the aggregation of tungsten species on ZSM-5 and was conductive to convert the tungsten species with octahedral coordination into tetrahedral coordination. And this ultimately led to that more acid sites were reserved after hydrothermal treatment in the tungsten and phosphorus co-modified ZSM-5 catalyst. Phosphorus species played an important role to restrain the dehydrogenation activity of tungsten. In addition, a model reflecting the interaction between tungsten species and ZSM-5 framework was proposed.

关键词： ZSM-5 tungsten phosphorus catalytic cracking propylene

Sensitivity evaluation of the flash flood warning system introduced to ungauged small mountainous basins in Korea

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Journal of Mountain Science 2019年第5期16卷 971-993页

作者： YOO Chulsang LEE Jinwook CHANG Kwonhee yang dongmin School of Civil Environmental and Architectural Engineering College of Engineering Korea University NOAA SNC Co. Ltd.

This study evaluates the uncertainty involved in the determination of the flash flood guidance(FFG) of the flash flood warning system(FFWS) for a small mountainous region(FFWS_MR)in Korea. The sensitivity is evaluated both at each step to determine the FFG and for all steps together. The results show that the relative difference of the FFG is about 50% of the current system, most of which involves the channel width. Especially, the use of some specific empirical equations to estimate the major parameters results in a considerable amount of the relative difference of the FFG. In addition, though only four basins were field-surveyed, it is found that the indirect estimation of the major parameters always introduces some amount of additional uncertainty. In conclusion, accurate estimation of the major parameters must be the most important procedure to derive an accurate FFG, among which the channel cross-section at the exit of the basin lies at the center.

关键词： Flash flood warning system Flash flood guidance Sensitivity analysis

B cell-derived anti-beta 2 glycoprotein I antibody mediates hyperhomocysteinemia-aggravated hypertensive glomerular lesions by triggering ferroptosis

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Signal Transduction and Targeted Therapy 2023年第4期8卷 1926-1941页

作者： Xing Du Xiaolong Ma Ying Tan Fangyu Shao Chun Li yang Zhao Yutong Miao Lulu Han Guohui Dang Yuwei Song Dongmin Yang Zhenling Deng Yue Wang Changtao Jiang Wei Kong Juan Feng Xian Wang Department of Physiology and Pathophysiology School of Basic Medical SciencesKey Laboratory of Molecular Cardiovascular ScienceMinistry of EducationPeking University100191 BeijingP.R.China Department of Nephrology Peking University First Hospital100034 BeijingP.R.China Department of Rheumatology and Immunology Peking University People’s HospitalBeijingChina Department of Laboratory Medicine Peking University Third Hospital100083 BeijingP.R.China Department of Nephrology Peking University Third Hospital100083 BeijingP.R.China

Hyperhomocysteinemia(HHcy)is a risk factor for chronic kidney diseases(CKDs)that affects about 85%CKD patients.HHcy stimulates B cells to secrete pathological antibodies,although it is unknown whether this pathway mediates kidney injury.In HHcytreated 2-kidney,1-clip(2K1C)hypertensive murine model,HHcy-activated B cells secreted anti-beta 2 glycoprotein I(β2GPI)antibodies that deposited in glomerular endothelial cells(GECs),exacerbating glomerulosclerosis and reducing renal function.Mechanistically,HHcy 2K1C mice increased phosphatidylethanolamine(PE)(18:0/20:4,18:0/22:6,16:0/20:4)in kidney tissue,as determined by lipidomics.GECs oxidative lipidomics validated the increase of oxidized phospholipids upon Hcy-activated B cells culture medium(Hcy-B CM)treatment,including PE(18:0/20:4+3[O],PE(18:0a/22:4+1[O],PE(18:0/22:4+2[O]and PE(18:0/22:4+3[O]).PE synthases ethanolamine kinase 2(etnk2)and ethanolamine-phosphate cytidylyltransferase 2(pcyt2)were increased in the kidney GECs of HHcy 2K1C mice and facilitated polyunsaturated PE synthesis to act as lipid peroxidation substrates.In HHcy 2K1C mice and Hcy-B CM-treated GECs,the oxidative environment induced by iron accumulation and the insufficient clearance of lipid peroxides caused by transferrin receptor(TFR)elevation and down-regulation of SLC7A11/glutathione peroxidase 4(GPX4)contributed to GECs ferroptosis of the kidneys.In vivo,pharmacological depletion of B cells or inhibition of ferroptosis mitigated the HHcy-aggravated hypertensive renal injury.Consequently,our findings uncovered a novel mechanism by which B cell-derived pathogenic anti-β2GPI IgG generated by HHcy exacerbated hypertensive kidney damage by inducing GECs ferroptosis.Targeting B cells or ferroptosis may be viable therapeutic strategies for ameliorating lipid peroxidative renal injury in HHcy patients with hypertensive nephropathy.

关键词： hypertensive glomerular peroxidation