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Localization and validation of an urbanized high-resolution land data assimilation system(u-HRLDAS)

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Science China Earth Sciences 2013年第6期56卷 1071-1078页

作者： MENG ChunLei zhang chaolin MIAO ShiGuang CHEN Fei Institute of Urban Meteorology China Meteorological Administration Department of Earth Sciences National Natural Science Foundation of China National Center for Atmospheric Research BoulderColorado 80301USA

This paper uses an urbanized high-resolution land data assimilation system(u-HRLDAS) to parameterize the urban land surface *** u-HRLDAS model is localized and developed in order to satisfy the need of the weather forecast in Beijing,*** remote sensing data used to localize and drive u-HRLDAS include the soil type data and MODIS retrieved leaf area index(LAI) *** evaporation and water depth for impervious surface in urban area are developed to improve the simulation of *** result of the urban weather forecast is used for the comparison based on the rapid update cycle system at Beijing Meteorological Bureau(BJ-RUC) without coupled with *** land surface temperature,land surface fluxes,and first layer soil moisture in several single sites and urban Beijing region by BJ-RUC are compared with u-HRLDAS after localization and *** off-line simulation results indicate that compared with BJ-RUC,after the localization and development,u-HRLDAS can improve the simulation of land surface parameters and fluxes definitely.

关键词： u-HRLDAS localization urban land surface parameters

Regression analysis of major parameters affecting the intensity of coal and gas outbursts in laboratory

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International Journal of Mining Science and Technology 2017年第2期27卷 327-332页

作者： Geng Jiabo Xu Jiang Nie Wen Peng Shoujian zhang chaolin Luo Xiaohang State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China State and Local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam Chongqing UniversityChongqing 400044China

Estimating the intensity of outbursts of coal and gas is important as the intensity and frequency of outbursts of coal and gas tend to increase in deep mining. Fully understanding the major factors contributing to coal and gas outbursts is significant in the evaluation of the intensity of the outburst. In this paper, we discuss the correlation between these major factors and the intensity of the outburst using Analysis of Variance(ANOVA) and Contingency Table Analysis(CTA). Regression analysis is used to evaluate the impact of these major factors on the intensity of outbursts based on physical experiments. Based on the evaluation, two simple models in terms of multiple linear and nonlinear regression were constructed for the prediction of the intensity of the outburst. The results show that the gas pressure and initial moisture in the coal mass could be the most significant factors compared to the weakest factor-porosity. The P values from Fisher's exact test in CTA are: moisture(0.019), geostress(0.290), porosity(0.650), and gas pressure(0.031). P values from ANOVA are moisture(0.094), geostress(0.077), porosity(0.420), and gas pressure(0.051). Furthermore, the multiple nonlinear regression model(RMSE: 3.870) is more accurate than the linear regression model(RMSE: 4.091).

关键词： Coal and gas outburst Gas pressure Regression analysis ANOVA CTA

Characteristics of coal resources in China and statistical analysis and preventive measures for coal mine accidents

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International Journal of Coal Science & Technology 2023年第2期10卷 45-57页

作者： chaolin zhang Peizhong Wang Enyuan Wang Dapeng Chen Chao Li Key Laboratory of Gas and Fire Control for Coal Mines Ministry of EducationSchool of Safety EngineeringChina University of Mining and TechnologyXuzhou 221116JiangsuChina State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116JiangsuChina Shaanxi Coal Chemical Industry Technology Research Institute Co. LTDXi'an 710054ShaanxiChina

In the process of green and smart mine construction under the context of carbon neutrality,China's coal safety situation has been continuously improved in recent *** order to recognize the development of coal production in China and prepare for future monitoring and prevention of safety incidents,this study mainly elaborated on the basic situation of coal resources and national mining accidents over the past five years(2017-2021),from four dimensions(accident level,type,region,and time),and then proposed the preventive measures based on accident statistical *** results show that the storage of coal resources has obvious geographic characteristics,mainly concentrated in the Midwest,with coal resources in Shanxi and Shaanxi accounting for about 49.4%.The proportion of coal consumption has dropped from 70.2%to 56%between 2011 and 2021,but still accounts for more than half of the ***,the accident-prone areas are positively correlated with the amount of coal *** different levels of coal mine accidents,general accidents had the highest number of accidents and deaths,with 692 accidents and 783 deaths,accounting for 87.6%and 54.64%*** frequency of roof,gas,and transportation accidents is relatively high,and the number of single fatalities caused by gas accidents is the largest,about *** terms of geographical distribution of accidents,the safety situation in Shanxi Province is the most *** the time distribution of coal mine accidents,the accidents mainly occurred in July and August,and rarely occurred in February and ***,the"4+4"safety management model is proposed,combining the statistical results with coal production in *** on the existing health and safety management systems,the manage-ments are divided into four sub-categories,and more specific measures are suggested.

关键词： Resource characteristics Coal mine accidents Security situation Safety 4+4 model Preventive measures

Special issue on RNA processing and regulation

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Frontiers of Electrical and Electronic Engineering in China 2018年第3期6卷 193-194页

作者： Xinshu Xiao chaolin zhang Department of Integrative Biology and Physiology Bioinformatics Interdepartmental ProgramMolecular Biology InstituteUniversity of California Los AngelesLos AngelesCA 90095USA Department of Systems Biology Department of Biochemistry and Molecular BiophysicsCenter for Motor Neuron Biology and DiseaseColumbia UniversityNew YorkNY 10032USA

This year （2018） marks the 60th anniversary of the ＂central dogma＂, summarized as ＂DNA makes RNA makes protein＂, which was originally proposed by Francis Crick in 1958. Three years later, messenger RNA was identified as the template of protein synthesis. After 60 years of discovery, including discovery of the split nature of eukaryotic genes （Le., splicing）, it becomes evident that messenger RNAs are not merely messengers, but a hub of co- and post-transcriptional regulation, which is fundamental to amplify the complexity encoded in the genome of higher eukaryotic organisms. The mature forms of RNA of protein-coding genes and their abundance have to be tightly regulated through multiple steps of sophisticated processing, including capping, splicing and polyadenylation. In addition, their function also critically depends on proper localization -- sometimes trafficking to the remote parts of the cell such as dendrites and axons of neurons -- and proper control of their stability. Furthermore, thousands of long and small noncoding RNAs are produced to play a wide range of roles in gene regulation. From our perspective, two overarching goals for RNA biology include （i） characterizing the spatial-temporal regulation of various RNA species and elucidating the underlying regulatory mechanisms; （ii） understanding the functional impact of such regulation on human physiology and disease.

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Molecular Epidemiology of Porcine Circovirus Type 3 Infection in Swine Herds in China

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Virologica Sinica 2018年第4期33卷 373-377页

作者： Xiangdong Li chaolin zhang Mingming Qiao Jiangsong Guo Guangyuan Xing Chunxia Jins Juan Wang Ming Sun Kegong Tian College of Animal Science and Veterinary Medicine Henan Agricultural University Zhengzhou 450002 China National Research Center for Veterinary Medicine High-Tech District Luoyang 471003 China Beijing Anheal Laboratories Co. Ltd. Beijing 100094 China Pulike Bio-engineering Co. Ltd. Luoyang 471003 China Sino Science Gene Technology Co. Ltd. Luoyang 471003 China

Dear Editor,Porcine circovirus type 3(PCV3)is a new-emerging circovirus belonging to the genus Circovirus in the family Circoviridae in which PCV type 1(PCV1)and PCV type 2(PCV2)were well documented(Palinski et al.2017).PCV1 is a cell culture-derived virus and is considered to be nonpathogenic for swine,whereas PCV2 is the primary etiological agent of porcine circovirus-associated

关键词：类型传染病学猪中国分子感染 PCV2 经济损失

Micromorphology of landslide soil Case study on the Jibazi landslide in Yunyang in the Three Gorges Region, China

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Journal of Mountain Science 2006年第2期3卷 147-157页

作者： HE Yurong CUI Peng LIAO chaolin zhang Baohua ZHAO Yu Chengdu Institute of Mountain Hazards and Environment Chinese Academy of Science ＆ Ministry of Water Conservation Chengdu 610064 China

Abstract： Landslide is one of natural catastrophes affecting national economy and people＇s livelihood. There are many reports on the forming mechanism and control of landslide, but the studies on micromorphology of landslide soil are few. There are many potential landslides in the Three Gorges Region in China. In this paper, the micromorphologic features of the Jibazi landslide soil in Yunyang in the Three Gorges Region of the Yangtze River were studied using routine methods, that is, soil micromorphology, X-ray diffraetometer and scanning electron microscope. The main conclusions are as follow：（1） The basic micromorphologic characteristics of the landslide soil are that the fine soil particles are commonly cohesive matrix, finer and lower content of skeleton grains, the microstructures are mainly types of phenocrystal gelatinization, densely chap and fissure structure. As a result, these micromorphologic features affect the discharging of soil water, favor the movement of landslide body and provide an internal basis of materials for the formation of landslide. （2） The concept on the forming material of landslide was proposed, and types of optical beamed clay aggregates, Fe-Mn isolates and glassy material were found in landslide-belt soil, which were remarkably different from the natural soil formation, and had some scientific significance in analyzing the forming mechanism of landslide and distinguishing me landslide-belt soil. （3） Some special micromorphologic and sub-micromorphologic characteristics, such as fingerprint microstructure, clay beamed bedding microstructure, oppressive microstructure, moulage microstructure and extending hole microstncture, could bring useful micromorphologic evidences for the observation and forecasting of landslide. The results mentioned above will bring helpful micromorphologic evidences for distinguishing slide soil, analyzing the formation mechanism of landslide, and monitoring and forecasting the occurrence of landslide.

关键词： Landslide Microstructure forming material of landslide Three Gorges Region China

RR1 and RR2 gene deletion affects the immunogenicity of a live attenuated pseudorabies virus vaccine candidate in natural pig host

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Frontiers of Agricultural Science and Engineering 2016年第1期3卷 81-86页

作者： Shijun YAN He YAN chaolin zhang Tongyan WANG Qingyuan YANG Zhe SUN Yan XIAO Feifei TAN Xiangdong LI Kegong TIAN National Research Center for Veterinary Medicine College of Animal Science and Veterinary Medicine Henan Agricultural University

As virulence-determining genes, RR1 and RR2 encode the small subunit and large subunit of viral ribonucleotide reductase(RR) in pseudorabies virus which have been extensively studied in mice. However,their role in pigs has not been adequately investigated. In this study, we deleted RR1 and RR2 genes based on a TK/g E/g I triple gene-deleted pseudorabies virus and tested its efficacy in pigs as a vaccine candidate. The rescued virus showed similar growth properties and plaque size in vitro as its parent strain. In an animal study, the virus could elicit humoral immune responses shown by generation of g B-specific antibodies and virus neutralizing ***, vaccination could not provide protection against virulent pseudorabies virus challenge since vaccinated pigs showed clinical pseudorabies-specific syndromes. The deficiency in protection may due to the generation of late and low levels of gB antibodies and virus neutralizing antibodies.

关键词： pseudorabies virus RR1 and RR2 ribonucleotide reductase vaccine candidate

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我国硫酸工业的发展趋势

化工进展 2007年第10期26卷 1363-1368页

作者：张超林中国石化南化集团研究院江苏南京210048

介绍了2004年至今中国硫酸产量位居世界首位,2006年中国硫酸产量达50.43 Mt,逐渐形成了以硫磺、硫铁矿和冶炼烟气为主的原料结构。改革开放以来,中国硫酸行业的产业集约化程度大幅提高,单系列硫酸装置的最大规模分别为硫铁矿制酸400 kt/... 详细信息

介绍了2004年至今中国硫酸产量位居世界首位,2006年中国硫酸产量达50.43 Mt,逐渐形成了以硫磺、硫铁矿和冶炼烟气为主的原料结构。改革开放以来,中国硫酸行业的产业集约化程度大幅提高,单系列硫酸装置的最大规模分别为硫铁矿制酸400 kt/a、硫磺制酸1000 kt/a、冶炼烟气制酸600 kt/a。还指出今后中国硫酸工业的发展趋势是:装置进一步大型化,产业集约化程度继续提高,全方位提升技术装备水平,加大节能减排力度,提高废热回收利用率,走循环经济的发展道路,实现可持续发展。

关键词：硫酸工业产量装置工艺

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硝基苯法制对氨基二苯胺的研究进展

化工进展 2008年第2期27卷 180-183页

作者：张超林南化集团研究院江苏南京210048

介绍了硝基苯法制对氨基二苯胺合成工艺及原理,分析了制备工艺中有机溶剂、碱的选择,温度、水分的控制,加氢催化剂、反应器的选择等的研究进展,评述了硝基苯法的改进——碳酰苯胺法制对氨基二苯胺工艺,论述了该工艺的优点。

关键词：硝基苯苯胺对氨基二苯胺