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| 1 | Surveillance of Noise Exposure Level in the Manufacturing Industry—China,2020显示文摘Introduction:Occupational noise exposure is a widespread issue in the manufacturing industry in China.Since 2019,the National Surveillance System for Occupational Hazards in the workplace was established to understand different occupational hazards,especially occupational noise,in workplaces in China.Methods:Both environmental and individual noise exposure levels were measured for 19,378 enterprises according to the Work Plan for Surveillance of Occupational Hazards in the Workplace(2020)issued by National Health Commission of the People’s Republic of China.Median and interquartile range(IQR)were calculated to describe the distribution of the noise exposure level by industry classification,enterprise-scale,and ownership type of the enterprise.Results:Overall,25.14%of the individual noise exposure samples exceeded the Chinese national standard among the selected enterprises.The overall median of environmental noise exposure level was 82.8 dB(A)in selected enterprises,while the median of individual noise exposure level was 81.3 dB(A).The individual noise exposure level in the manufacture of metal products,manufacture of motor vehicles,minisized enterprises,collective enterprises and private enterprises was relatively high.Conclusion:Occupational noise is still one of the occupational hazards that cannot be ignored in the manufacturing industry,especially in mini-sized and private enterprises.The risk of noise exposure in the target industry is still high and will pose a threat to the health of workers. | Jinnan Zheng Siyu Zhang Hongfei Wang Yue Yu Weijiang Hu | 2021 | China CDC weekly2021，3，43： | 9 |
| 2 | The Role of the Kurtosis Metric in Evaluating the Risk of Occupational Hearing Loss Associated with Complex Noise—Zhejiang Province,China,2010−2019显示文摘Summary What is already known about this topic?Occupational noise-induced hearing loss(NIHL)has been the second most common occupational disease in China.Noise energy is the main risk factor for occupational NIHL.Evidence shows the temporal structure of noise(as indicated by kurtosis metric)contribute to the development of NIHL.However,the role of the kurtosis metric in evaluating the risk of occupational NIHL associated with complex noise has been rarely reported. | Meibian Zhang Xiangjing Gao Wei Qiu Xin Sun Weijiang Hu | 2021 | China CDC weekly2021，3，18： | 4 |
| 3 | Epidemiological Characteristics of Occupational Cancers Reported—China,2006−2020显示文摘Introduction:Occupational cancers are a major threat to workers’health in China.The latest version of the Classification and Catalogue of the Occupational Diseases includes 11 occupational cancers.This study analyzed the epidemiological characteristics of occupational cancers in China reported to the National Occupational Disease Reporting System during 2006−2020.Methods:Occupational cancers reported during 2016−2020 were obtained from the National Occupational Disease Reporting System.Epidemiological characteristics were analyzed by year,region,industry,gender,age at diagnosis,and exposure duration to occupational hazards.Results:Overall,a total of 1,116 cases of occupational cancers were reported between 2006 and 2020.The main types reported were leukemia caused by benzene exposure(511,45.79%),lung cancer caused by coke oven exhaust exposure(266,23.84%),and lung cancer and mesothelioma caused by asbestos exposure(226,20.25%).There were 6 provincial-level administrative divisions(PLADs)that had reported over 50 new cases in the last 15 years.Most cases(913,81.18%)were distributed in the manufacturing industry.There were 870(77.96%)male cases and 246(22.04%)female cases.The average age at diagnosis of all reported cases was 51.91±15.85 years,and the median exposure duration to occupational hazards was 12(5.29−23.25)years.Conclusions:There is a large discrepancy between the high morbidity of occupational cancers and a low number of cases diagnosed and reported cases.Occupational cancers in China may be underestimated,and comprehensive measures should be taken to improve the diagnosis and reporting of occupational cancers. | Xinxin Li Dan Wang Anqi Liu Weijiang Hu Xin Sun | 2022 | China CDC weekly2022，4，17： | 2 |
| 4 | Musk secretion in muskrats(Ondatra zibethicus L.):association with lipid and cholesterol metabolism-related pathways显示文摘Male muskrats(Ondatra zibethicus L.)secrete musk from their scent glands during musk secretion season.Musk plays an important role as a communication pheromone during the breeding season.In this study,gas chromatography–mass spectrometry(GC–MS)was used to analyze the main components of musk.The GC–MS results after methyl esterification showed that 71.55%of the musk is composed of fatty acids.The other components of muskrat musk include cholesterol(9.31%)and other organics.Transcriptome comparison between musk secretion and non-secretion seasons showed significant changes in the scent glands for 53 genes involved in fatty acid and cholesterol synthesis and metabolism regulatory pathways,which include fatty acid biosynthesis,elongation,and metabolism;steroid biosynthesis;steroid hormone biosynthesis pathways.A reverse transcription–polymerase chain reaction analysis confirmed these detected changes.Overall,our results indicated that lipid synthesis and metabolism play important roles in musk compound synthesis by providing energy for musk production,and the produced musk provides a mechanism for male muskrats to communicate with females during the breeding season. | TIANXIANG ZHANG MEISHAN ZHANG MINGHUI SHI WEIJIANG JIN SHUMIAO ZHANG MENGYUAN FAN YIMENG LI YUPING MENG XUELIN TIAN SHUQIANG LIU DEFU HU | 2021 | BIOCELL2021，45，2： | 2 |
| 5 | Association between the Apolipoprotein E4 and Postoperative Cognitive Dysfunction in Elderly Patients Undergoing Intravenous Anesthesia and Inhalation Anesthesia显示文摘 | Yingmin Cai Haitao Hu Pengbin Liu Gaifeng Feng Weijiang Dong Bing Yu Yulin Zhu Jinxin Song Minggang Zhao | 2012 | Anesthesiology2012，，1： | 1 |
| 6 | Noise Exposure Level of Coal-Fired Thermal Power Stations in Different Scales--China,2017−2019显示文摘What is already known about this topic?China is a country mainly based on thermal power generation.Noise is one of the most critical occupational hazards among thermal power stations.What is added by this report?The proportion of detected environmental noise that exceeded 85 dB(A)is 69.6%,and the median of its noise level was 88.4 dB(A).The proportion of detected individual noise that exceeded 85 dB(A)was 52.6%,and the median of its noise level was 85.4 dB(A).The overall environmental noise exposure levels rose with the increase in the scales of coal-fired thermal power stations,while the individual noise exposure levels were contrary.What are the implications for public health practice?Workers in coal-fired thermal power stations are exposed to noise at a significantly high level,more than half of the environmental and individual exposure level were above 85 dB(A),which could impair workers’hearing capacity.Specific intervention is required to protect workers from exposure to noise at the workplace and eliminate the adverse health effects. | Xin Wang Siyu Zhang Ning Kang Weijiang Hu | 2020 | China CDC weekly2020，2，32： | 1 |
| 7 | Application of the Kurtosis Metric to the Assessment of Hearing Loss Associated with Occupational Noise Exposure显示文摘It is well known that high-level noise exposure can lead to hearing loss.Noise-induced hearing loss(NIHL)continues to be one of the major occupational health hazards.An underlying assumption in current noise standards,e.g.,ISO 1999:2013(1),is that hearing loss is related to the total energy of the exposure.Thus,the risk of NIHL can be predicted according to the ISO 1999 prediction model.Unfortunately,the validity of the prediction model to correctly predict the NIHL for all types of noise exposure is still under question,especially for complex noise of impulsive character. | Wei Qiu Meibian Zhang Weijiang Hu Xin Sun | 2021 | China CDC weekly2021，3，18： | 1 |
| 8 | Occupational Dust Hazards and Risk Assessment of Coal-Fired Thermal Power Plants of Different Capacities—China,2017–2019显示文摘Summary What is already known about this topic?Silica dust and coal dust are the main occupational hazards in coal-fired thermal power plants,which mainly exist in coal transportation workplaces,combustion milling workplaces,and ash removal workplaces.What is added by this report?The overall environmental and personal dust exposure levels decrease with an increase in the capacity of coalfired thermal power plants. | Xin Wang Weijiang Hu Siyu Zhang Ning Kang Hongfei Wang Yiwen Dong Hongying Bian Ye Meng | 2021 | China CDC weekly2021，3，43： | 1 |
| 9 | Methods for alleviation of impacts of axial diffusion on decomposition products monitoring in gas‐insulated transmission lines显示文摘Considering the long length of gas‐insulated transmission lines(GILs),novel methods are required to alleviate the impacts of axial diffusion on decomposition products'moni-toring.The diffusion process of two typical decomposition products,SO2 and SO2F2,was studied.During the diffusion experiments,SO2 and SO2F2 were generated by partial discharges.Based on Fick’s law,an axial diffusion model of SO2 and SO2F2 was proposed.By combining the experiment and simulation results,it was found that the diffusion coefficient of SO2 was greater than that of SO2F2.In addition,the concentration variation at different positions would experience some delay and decay in axial direction.The delay and decay were inversely related to the diffusion coefficient and increased with prolongation of the distance.Based on the diffusion characteristics determined,methods for optimising the monitoring positions,correcting concentration,and using the concentration ratio and generation rate were proposed to alleviate the impacts of diffusion.The methods could allow the decomposition products to be monitored in 1 month and reduce the monitoring error to 10%or less.The diffusion model and the methods could be useful for monitoring decomposition products in GILs. | Rui Qiu Weijiang Chen Wenjun Zhou Ming Liu Jianming Zou Yu Zheng Han Li Shizhuo Hu Jianhui Yu | 2022 | High Voltage2022，7，1： | 0 |
| 10 | Trend Analysis of Occupational Lung Cancer from Coke Oven Emission Exposure-China,2008-2019显示文摘Summary What is already known about this topic?Coke oven emissions are a complex mixture of particulate matter and gases,some with carcinogenicity,released during coke production.Lung cancer caused by coke oven emissions has been listed as a statutory occupational cancer in China and many countries.What is added by this report?In this study,coke oven emissions-induced lung cancer was mainly found in the manufacturing industries.Coke oven workers exposed to higher levels of polycyclic aromatic hydrocarbons in different workplaces had a high risk of occupational lung cancer.What are the implications for public health practice?It is necessary to take efforts to greatly reduce emissions from coke production and effectively monitor the health of workers. | Alimire Abulikemu Dan Wang Weijiang Hu Meili Shen Xin Sun Huawei Duan | 2022 | China CDC weekly2022，4，17： | 0 |
| 11 | History of the Development of the Reporting System of Occupational Diseases and Occupational Disease List in China显示文摘Overview An occupational disease reporting system has been developed starting from a paper-based reporting system to a network-based direct reporting system.The reporting system has been linked with more than 43,300 users from 25,000 agencies at the national,provincial,municipal,and county levels in a unified vision to report individual cases of occupational diseases and chemical poisonings.Following the establishment of the reporting system of occupational diseases,the list of occupational diseases has been published since the 1950s,beginning with 14 diseases and revised by recognition and establishment of more occupational diseases in accordance with scientific advancements in medical science.The list of occupational diseases represents increasing knowledge on the development of medical sciences and disease diagnosis technologies and it plays a dual role in prevention and compensation of occupational diseases. | Dan Wang Anqi Liu Siyu Zhang Yue Yu Weijiang Hu Xin Sun | 2020 | China CDC weekly2020，2，18： | 0 |
| 12 | Cognitive function correlations with apolipoprotein Eε4 single nucleotide polymorphism in 1000 elderly patients following general anesthesia A randomized controlled study显示文摘BACKGROUND:Cognitive dysfunction occurs in elderly patients following general anesthesia, and this might be associated with genetics.Studies have shown that theε4 allele gene is closely associated with senile dementia. OBJECTIVE:To compare and analyze the correlations between cognitive dysfunction and single nucleotide polymorphism of apolipoprotein E(ApoE) following inhalation or intravenous anesthesia. DESIGN,TIME AND SETTING:A randomized,controlled study was performed.The patients were recruited from the Department of Anesthesia,Second Affiliated Hospital,Medical College, Xi'an Jiaotong University,China between May 2005 and December 2008.Genetic analyses were conducted at the Departments of Neuroanatomy and Forensic Medicine,Medical College,Xi'an Jiaotong University,China. PARTICIPANTS:A total of 1 000 patients of ASAⅠ-Ⅱgrade,without genetic connection,were enrolled in this study,comprising 520 males and 480 females,aged(70.1±4.6) years and weighing(57.3±7.5) kg.No patients suffered from cognitive dysfunction. METHODS:The patients were equally and randomly divided into intravenous anesthesia and gas anesthesia groups.Total intravenous anesthesia and inhaled anesthesia were used.Genomic DNA from whole blood was extracted.The ApoE gene was amplified by PCR.Restriction fragment length polymorphism of ApoE gene was analyzed.Cognitive function was evaluated by Mini-Mental State Examination(MMSE).Patients scoring<25 points were diagnosed with cognitive dysfunction. MAIN OUTCOME MEASURES:Correlation of ApoE gene frequency and ApoEε4 allele to MMSE scores was measured. RESULTS:MMSE scores in patients from the gas anesthesia group significantly decreased 3 days after surgery,compared with the intravenous anesthesia group.The proportion of patients that scored<25 points was significantly greater in the gas anesthesia group compared with the intravenous anesthesia group 3 days after surgery.Reduced MMSE scores closely correlated with expression of the ApoEε4 allele in the gas anesthesia group(odds ratio = 2.83;95%confidence interval was 1.25-6.39,P<0.05).However,decreased MMSE scores did not closely correlated with expression of the ApoEε4 allele in the intravenous anesthesia group(odds ratio = 0.96;95% confidence interval was 0.37-2.39,P>0.05). CONCLUSION:Results demonstrated a correlation between cognitive dysfunction and ApoE single nucleotide polymorphism in elderly patients after gas anesthesia.However,no relationship between cognitive dysfunction and ApoE single nucleotide polymorphism was determined in elderly patients following intravenous anesthesia.Therefore,elderly patients,especially those expressing the ApoEε4 gene,should be cautiously exposed to gas anesthesia. | Yingmin Cai Haitao Hu Rongliang Xue Pengbin Liu Gaifeng Feng Weijiang Dong Bin Yu Minggang Zhao | 2009 | Neural Regeneration Research2009，4，4： | 0 |
| 13 | Design and preparation of an ultra-high temperature ceramic by in-situ introduction of Zr_(2)[Al(Si)]_(4)C_(5) into ZrB_(2)-SiC:Investigation on the mechanical properties and oxidation behavior显示文摘Novel ZrB_(2)-matrix composites were designed and prepared by in-situ introducing SiC and Zr_(2)[Al(Si)]_(4)C_(5) simultaneously for the first time.The obtained composites were dense and showed good mechanical properties,especially the strength and toughness,706 MPa and 7.33 MPa·m^(1/2),respectively,coupled with high hardness of 21.3 GPa,and stiffness of 452 GPa.SiC and Zr_(2)[Al(Si)]_(4)C_(5) constituted a reinforcing system with synergistic effects including grain refinement,grain pull-out as well as crack branching,bridging,and deflection.Besides,the oxidation results of the composites showed that the oxidation kinetics followed the parabolic law at 1600℃,and the oxidation rate constants increased with the increase of Zr_(2)[Al(Si)]_(4)C_(5) content.The formation and evolution model of the oxidation structure was also investigated,and the oxide scale of the composite exhibited a three-layer structure. | Lei YU Hui LIU Yaohui FU Weijiang HU Zhefei WANG Quan LIU Bo WEI Jian YANG Tai QIU | 2021 | Journal of Advanced Ceramics2021，10，5： | 0 |
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