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新疆煤矿工人职业紧张和心理健康现状及其影响因素分析

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工业卫生与职业病 2024年第5期50卷 415-419,429页

作者：李欣泽付爱玲刘昕樊永勇刘继文新疆医科大学公共卫生学院新疆乌鲁木齐830011 国家能源集团新疆能源有限责任公司乌东煤矿

目的调查新疆煤矿工人心理健康和职业紧张现状,并分析煤矿工人心理健康的影响因素。方法采用分层整群抽样的方法纳入大、中型煤矿煤矿工人1400名,通过课题组自设的“一般情况调查问卷”、工作要求-自主(job demand-control,JDC)模式问... 详细信息

目的调查新疆煤矿工人心理健康和职业紧张现状,并分析煤矿工人心理健康的影响因素。方法采用分层整群抽样的方法纳入大、中型煤矿煤矿工人1400名,通过课题组自设的“一般情况调查问卷”、工作要求-自主(job demand-control,JDC)模式问卷、心理健康状况自评量表(SCL-90)对研究对象进行现状调查。结果参与调查的1349名煤矿工人中职业紧张452人,检出率为33.5%,心理问题246人,检出率为18.2%;有职业紧张、男性、工龄增加、高学历、井下作业、吸烟和饮酒的煤矿工人心理问题检出率增加,差异均有统计学意义(χ^(2)=16.967、18.337、7.642、14.568、4.556、4.192、20.189,P0),与社会支持呈负相关关系(r30年(OR=1.975,95%CI:1.029~3.788),高中或大专学历(OR=1.485,95%CI:1.091~2.021)、本科及以上学历(OR=1.894,95%CI:1.149~3.121),饮酒(OR=1.726,95%CI:1.201~2.481),有职业紧张(OR=1.822,95%CI:1.362~2.438),井下作业(OR=1.647,95%CI:1.112~2.440)的煤矿工人更易出现心理问题(P<0.05);女性(OR=0.108,95%CI:0.026~0.449)相较于男性不易出现心理问题。结论研究表明新疆煤矿工人职业紧张和心理问题的检出率较高,性别、工龄、学历、工种、饮酒和职业紧张对心理问题的发生有影响。

关键词：心理健康职业紧张煤矿工人影响因素

分布式能源并网对电网运行控制的局部影响分析

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通信电源技术 2024年第16期41卷 115-117页

作者：刘继文俞海良樊卡国网浙江海宁市供电有限公司浙江嘉兴314000

随着分布式能源的快速发展,分布式能源并网对传统电网运行控制造成了显著影响。文章系统分析了分布式能源并网对电网运行的局部影响,重点探讨了电压稳定性、频率控制以及电流质量管理等方面的问题。研究表明,分布式能源并网在提高能源... 详细信息

随着分布式能源的快速发展,分布式能源并网对传统电网运行控制造成了显著影响。文章系统分析了分布式能源并网对电网运行的局部影响,重点探讨了电压稳定性、频率控制以及电流质量管理等方面的问题。研究表明,分布式能源并网在提高能源利用效率和减少环境污染的同时,给电网运行稳定性和安全性带来了新的挑战。针对这些挑战,提出相应的调节和控制策略,包括电压调节、频率调频及电流谐波滤波等,以确保电网的安全、稳定及高效运行。

关键词：分布式能源并网电压稳定性频率控制电流质量电网运行控制

A New Genetic Algorithm Based on Niche Technique and Local Search Method

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Journal of University of Science and Technology Beijing 2001年第1期8卷 63-68页

作者： Jinwu Xu, jiwen liu Mechanical Engineering School, University of Science and Technology Beijing, Beijing 100083, China Mechanical Engineering School Univ. of Sci. and Technology Beijing Beijing 100083 China

The genetic algorithm has been widely used in many fields as an easy robust global search and optimization method. In this paper, a new generic algorithm based on niche technique and local search method is presented under the consideration of inadequacies of the simple genetic algorithm. In order to prove the adaptability and validity of the improved genetic algorithm, optimization problems of multimodal functions with equal peaks, unequal peaks and complicated peak distribution are discussed. The simulation results show that compared to other niching methods, this improved genetic algorithm has obvious potential on many respects, such as convergence speed, solution accuracy, ability of global optimization, etc.

关键词： genetic algorithm (GA) niche technique local search method

Phylotype resolved spatial variation and association patterns of planktonic Thaumarchaeota in eastern Chinese marginal seas

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Marine Life Science & Technology 2023年第2期5卷 257-270页

作者： jiwen liu Fuyan Huang Jiao liu Xiaoyue liu Ruiyun Lin Xiaosong Zhong Brian Austin Xiao-Hua Zhang Frontiers Science Center for Deep Ocean Multispheres and Earth System and College of Marine Life SciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Ecology and Environmental Science Laoshan LaboratoryQingdao 266237China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationQingdao 266100China Institute of Aquaculture University of StirlingStirling FK94LAScotlandUK

The majority of marine ammonia oxidizers belong to Thaumarchaeota,a phylum of Archaea,which is distributed throughout the water *** surface waters contain distinct thaumarchaeotal phylotypes compared to the deeper ocean,but spatial dynamics of the surface-associated lineages are largely *** study of 120 seawater samples from the eastern Chinese marginal seas identifed contrasting distribution and association patterns among thaumarchaeotal phylotypes across diferent ***,Nitrosopumilus-like and Nitrosopelagicus-like phylotypes dominated the surface water(3 m)of the Yellow Sea(YS)and East China Sea(ECS),respectively,along with increased abundance of total free-living Thaumarchaeota in *** compositional changes were observed in the surface *** spatial heterogeneity of particle-attached Thaumarchaeota was less clear in surface microlayers than in surface ***,the Nitrosopelagicus-like phylotype increased in abundance from surface to 90 m in ECS,which led to an increase in the proportion of Thaumarchaeota relative to total *** occurred mainly in the free-living *** results indicate a clear size-fractionated niche partitioning,which is more pronounced at lower depths than in the surface water/surface *** addition,associations of Thaumarchaeota with other microbial taxa varied between phylotypes and size *** results show that a phylotype-resolved and size-fractionated spatial heterogeneity of the thaumarchaeotal community is present in surface oceanic waters and a vertical variation of the Nitrosopelagicus-like phylotype is present in shallow shelf waters.

关键词： Thaumarchaeota Phylotype Association pattern Spatial variation Surface microlayer Chinese marginal seas

Diversity of culturable heterotrophic bacteria from the Mariana Trench and their ability to degrade macromolecules

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Marine Life Science & Technology 2020年第2期2卷 181-193页

作者： Xiuxiu Zhao jiwen liu Shun Zhou Yanfen Zheng Yanhong Wu Kazuhiro Kogure Xiao-Hua Zhang MOE Key Laboratory of Marine Genetics and Breeding College of Marine Life SciencesOcean University of China.Qingdao 266003China Laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China Atmosphere and Ocean Research Institute The University of Tokyo5-1-5.Kashiwanoha.KashiwaChiba 277-8564Japan

The Mariana Trench is the deepest location on earth and harbors unique microbial communities as evidenced by 16S rRNA gene amplicon and metagenomic *** culturable microorganisms from the Mariana Trench will contribute to a further understanding of hadal biogeochemical processes and act as a unique microbial reservoir with potential ***,825 bacterial strains,identified by 16S rRNA gene sequencing,were isolated from 12 water depths(0-10,400 m)of the Mariana Trench with 2216E and R2A media at 4℃ or 28℃ on four cruises during *** bacteria belong to four phyla,nine classes,27 orders,45 families and 108 ***,Gammaproteobacteria,Actinobacteria_c,Bacilli and Flavobacteriia were the most abundant classes,accounting for 37.9%,33.0%,11.8%,8.6%and 8.0%of the total bacterial isolates,respectively.2216E and R2A media were found to have a better selectivity to Bacilli and Flavobacteriia,*** strains were potential novel bacterial species with a 16S rRNA gene similarity<98.65%,and a higher percentage of novel strains were obtained from R2A than 2216E ***,301(150 species)out of 354 strains(178 species)selected from each depth could degrade at least one of the ten kinds of macromolecules *** results indicate that there is a high diversity of culturable bacteria in the Mariana Trench and they can produce a variety of extracellular *** study provides a valuable resource of microorganisms for investigating their biogeochemical roles in the Mariana Trench and for industrial applications.

关键词： Diversity Heterotrophic bacteria The Mariana Trench Macromolecule Water column

新疆地区生物安全实验室人员职业紧张及其与工作相关肌肉骨骼疾患关系研究

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职业卫生与应急救援 2024年第4期42卷 421-426页

作者：巨珂珂吴瑞凯余婧吴丽刘继文卢耀勤陕西省人民医院陕西西安710086 新疆医科大学第一附属医院新疆乌鲁木齐830011 新疆医科大学护理学院新疆乌鲁木齐830011 乌鲁木齐市疾病预防控制中心新疆乌鲁木齐830000

目的了解新疆地区生物安全实验室(biosafety laboratory,BSL)工作人员职业紧张现况,分析其可能的影响因素及其与工作相关肌肉骨骼疾患(work-related musculoskeletal disorders,WMSDs)的关系。方法2021年5月,采用整群抽样方法,对新疆各... 详细信息

目的了解新疆地区生物安全实验室(biosafety laboratory,BSL)工作人员职业紧张现况,分析其可能的影响因素及其与工作相关肌肉骨骼疾患(work-related musculoskeletal disorders,WMSDs)的关系。方法2021年5月,采用整群抽样方法,对新疆各地区BSL工作人员进行调查。采用付出回报-失衡调查表(effort-reward imbalance,ERI)调查职业紧张情况,《中国肌肉骨骼疾患调查问卷》调查WMSDs情况。采用多因素logistic回归模型分析职业紧张的影响因素;采用倾向性匹配法对是否患WMSDs员工的人口学变量和工作相关因素进行匹配后,再以多因素logistic回归模型分析职业紧张与BSL工作人员WMSDs发生风险的关系。结果纳入BSL工作人员7924人,职业紧张检出率为83.38%(6607人),WMSDs患病率为69.16%(5480人)。多因素logistic回归分析结果显示:BSL等级为二级的实验室工作人员发生职业紧张的风险是BSL等级为一级的工作人员的1.219倍(P0.05)。匹配后的多因素logistic回归分析显示:ERI量表中付出维度、回报维度和超负荷维度得分与BSL工作人员出现WMSDs的风险为正相关关系(OR=1.06、1.01、1.06,均P<0.001)。结论职业紧张和WMSDs在BSL工作人员中较为普遍,职业紧张可能增加发生WMSDs的风险。应根据工作人员能力的不同,合理地分配工作任务,建立标准化的工作流程,定期开展健康教育,及时安排心理咨询和指导,积极预防BSL工作人员心理问题的发生。

关键词：职业紧张工作相关肌肉骨骼疾患生物安全实验室工作能力倾向评分法

新疆生物安全实验室人员焦虑现况与影响因素分析

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职业卫生与应急救援 2024年第1期42卷 15-20页

作者：巨珂珂吴瑞凯陈昱名吴丽刘继文卢耀勤新疆医科大学公共卫生学院新疆乌鲁木齐830054 新疆医科大学护理学院新疆乌鲁木齐830054 乌鲁木齐市疾病预防控制中心新疆乌鲁木齐830026

目的分析新疆生物安全实验室(biosafety laboratory,BSL)人员焦虑现况及其影响因素。方法于2021年,采用整群抽样的方式,选取新疆106个县的各相关疾控中心单位实验室、医院检验科等部门的8 500名BSL工作人员为研究对象,采用《焦虑自评... 详细信息

目的分析新疆生物安全实验室(biosafety laboratory,BSL)人员焦虑现况及其影响因素。方法于2021年,采用整群抽样的方式,选取新疆106个县的各相关疾控中心单位实验室、医院检验科等部门的8 500名BSL工作人员为研究对象,采用《焦虑自评量表》(Self-Rating Anxiety Scale,SAS)进行问卷调查;采用logistic回归模型分析焦虑的可能影响因素。结果回收有效问卷7 924份,有效回收率为93.2%。焦虑检出率为34.93%(2 768/7 924)。其中轻度焦虑检出率为19.95%,中度焦虑检出率为8.99%,重度焦虑检出率为5.99%。logistic回归分析结果显示:女性相对于男性发生焦虑的风险更大(OR=1.418,P <0.05);相比<24岁者,30~44、≥50岁者更容易发生焦虑(OR=1.298、1.482,P <0.05);相比未婚,已婚者发生焦虑的风险上升(OR=1.159,P <0.05);相比无请假者,有请假者发生焦虑的风险升高(OR=1.228~4.405,P <0.05);相比工龄≤5年者,工龄6年及以上发生焦虑危险性升高(OR=1.444、2.002,P <0.05);相比实验技术人员,后勤、工程人员发生焦虑危险性上升(OR=1.280,P <0.05);相比固定白班者,倒班者发生焦虑的危险性上升(OR=2.051,P <0.05);患冠心病、消化性溃疡者发生焦虑危险性上升(OR=1.848、2.951,P <0.05);相比中专及以下学历者,本科及以上学历者发生焦虑的危险性降低(OR=0.685,P <0.05);相比不运动者,每周运动者发生焦虑的危险性降低(OR=0.708~0.775,P <0.05);相比睡眠质量差者,睡眠质量良好者发生焦虑的危险性降低(OR=0.201,P <0.05);相比月均收入3 000元以下者,月收入≥4 000元者发生焦虑的危险性降低(OR=0.685~0.771,P <0.05)。结论新疆BSL工作人员焦虑发生率较高,影响因素是多方面的,应重视对其的评估与干预。相关部门应从多个层面加以干预,减少员工焦虑情绪的发生。

关键词：生物安全实验室焦虑现况分析影响因素

Vertical variation in Vibrio community composition in Sansha Yongle Blue Hole and its ability to degrade macromolecules

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Marine Life Science & Technology 2020年第1期2卷 60-72页

作者： Bei Li jiwen liu Shun Zhou Liang Fu Peng Yao Lin Chen Zuosheng Yang Xiaolei Wang Xiao-Hua Zhang College of Marine Life Sciences Ocean University of China5 Yushan RoadQingdao 266003China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Sansha Track Ocean Coral Reef Conservation Research Institute Sansha 573199China Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education/Institute for Advanced Ocean StudyOcean University of ChinaQingdao 266100China College of Marine Geosciences Ocean University of China.Qingdao 266100China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China

With the advantages of wide distribution,fast growth,and broad metabolic spectrum to organic carbon compounds,Vibrio may play an important role in organic carbon ***,the ecological roles of Vibrio in many marine environments have not been ***,the world's deepest'blue hole',the Sansha Yongle Blue Hole(SYBH)in the South China Sea,which is a geographically semi-enclosed environment featuring unique chemical characters,was *** abundance,diversity and carbon source utilization capability of Vibrio were studied by quantification and high-throughput sequencing of Vibrio specific 16S rRNA genes and cultivation *** abundance of Vibrio in water column of the SYBH ranged from 3.78×10^4 to 7.35×10^616S rRNA gene copies L_***-living Vibrio was more abundant than particle-associated Vibrio(~1.20×10^6 versus-2.68×10^5 gene copies L_1),indicating that Vibrio prefers a free-living life *** Vibrio assemblages showed clear vertical stratification and could be divided into three groups:aerobic-transition,middle anaerobic and bottom anaerobic *** oxygen(DO),temperature,pH and salinity were the main environmental factors affecting the abundance and community *** Vibrio demonstrated a degrading capability to various macromolecular substrates,including starch,Tween 20/40/80,DNA,gelatin,alginate,casein,chitin,lecithin,K-carrageenan,mannan,xylan and hyaluronic *** suggests that Vibrio could produce a variety of highly active extracellular *** study provides new insights into the distribution pattern and possible role in carbon cycle of Vibrio in the unique environment of a"blue hole'.

关键词： Vibrio community Vertical stratification Carbon source utilization Sansha Yongle Blue Hole

Exploring the dynamic three-dimensional chromatin architecture and transcriptional landscape in goose liver tissues underlying metabolic adaptations induced by a high-fat diet

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Journal of Animal Science and Biotechnology 2024年第4期15卷 1494-1511页

作者： Guangliang Gao Rui liu Silu Hu Mengnan He Jiaman Zhang Dengfeng Gao Jing Li Jiwei Hu jiwen Wang Qigui Wang Mingzhou Li Long Jin Livestock and Poultry Multi‑Omics Key Laboratory of Ministry of Agriculture and Rural Affairs College of Animal Science and TechnologySichuan Agricultural UniversityChengdu 611130China Chongqing Engineering Research Center of Goose Genetic Improvement Institute of Poultry ScienceChongqing Academy of Animal SciencesRongchang DistrictChongqing 402460China

Background Goose, descendants of migratory ancestors, have undergone extensive selective breeding, resulting in their remarkable ability to accumulate fat in the liver and exhibit a high tolerance for significant energy intake. As a result, goose offers an excellent model for studying obesity, metabolic disorders, and liver diseases in mammals. Although the impact of the three-dimensional arrangement of chromatin within the cell nucleus on gene expression and transcriptional regulation is widely acknowledged, the precise functions of chromatin architecture reorganization during fat deposition in goose liver tissues still need to be fully *** In this study, geese exhibited more pronounced changes in the liver index and triglyceride(TG) content following the consumption of the high-fat diet(HFD) than mice without significant signs of inflammation. Additionally, we performed comprehensive analyses on 10 goose liver tissues(5 HFD, 5 normal), including generating highresolution maps of chromatin architecture, conducting whole-genome gene expression profiling, and identifying H3K27ac peaks in the livers of geese and mice subjected to the HFD. Our results unveiled a multiscale restructuring of chromatin architecture, encompassing Compartment A/B, topologically associated domains, and interactions between promoters and enhancers. The dynamism of the three-dimensional genome architecture, prompted by the HFD, assumed a pivotal role in the transcriptional regulation of crucial genes. Furthermore, we identified genes that regulate chromatin conformation changes, contributing to the metabolic adaptation process of lipid deposition and hepatic fat changes in geese in response to excessive energy intake. Moreover, we conducted a cross-species analysis comparing geese and mice exposed to the HFD, revealing unique characteristics specific to the goose liver compared to a mouse. These chromatin conformation changes help elucidate the observed characteristics of fat

关键词： Compartment A/B Goose fatty liver Promoter-enhancer interactions Regulation of gene expression