中华劳动卫生职业病杂志最新文献

{"title":"[Analysis of the improvement effect of DR high kilovoltage chest radiography image quality control in Tianjin City from 2022 to 2023].","authors":"N Wang, L Liu, W Chen, Y Liang, L Huang, D Y Wang","doi":"10.3760/cma.j.cn121094-20231227-00168","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20231227-00168","url":null,"abstract":"<p><p><b>Objective:</b> To analyze the main effect of improving the image quality of digital radiography (DR) high kilovoltage chest radiography in Tianjin, and to provide reference for the implementation of quality control work. <b>Methods:</b> In November 2023, the image quality evaluation results of DR high kilovoltage chest radiographs submitted for approval by Tianjin Occupational Health Inspection Institutions from 2022 to 2023 were analyzed. According to the results of the image quality review in 2022, the outstanding problems, causes and improvement plans were summarized, and the contents of the image quality improvement projects in 2023 were determined. χ(2) test was used to compare the evaluation results of DR high kilovoltage chest radiograph image quality and the differences among various specific evaluation indicators before and after the improvement, and to compare the differences of image quality evaluation results among groups participating in different quality control improvement projects after the improvement. <b>Results:</b> Compared with 2022, after the implementation of the quality control improvement projects in 2023, the rate of level 1 film (excellent film) and level 2 film (good film) of DR high kilovoltage chest radiographs increased by 3.7% and 20.0%, respectively, and the rate of level 4 film (waste film) decreased by 30.0%. After the implementation of the improvement projects, the non-conformity rate and the serious non-conformity rate of 7 indicators were significantly reduced (<i>P</i><0.05). The medical institutions participating in the two quality control improvement projects of related training and on-site guidance increased the rate of level 2 film (good film) and decreased the rate of level 4 film (waste film) compared with the medical institutions participating in the one improvement project of related training (χ(2)=14.78, <i>P</i><0.05) . <b>Conclusion:</b> The quality control improvement projects can improve the image quality of Tianjin DR high kilovoltage chest radiography, and the combination of relevant training and on-site guidance may have better improvement effect.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"852-857"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Structural equation model study on the correlation between sense of coherence, job stressors and mental health of nurses practitioners].","authors":"H Y Zhang, X L Long, Y Zhou, J Du","doi":"10.3760/cma.j.cn121094-20231113-00110","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20231113-00110","url":null,"abstract":"<p><p><b>Objective:</b> To investigate the sense of coherence, job stressors and mental health status of nurses practitioners, and analyze the correlation among them. <b>Methods:</b> In September 2020, nurses practitioners in Chengdu City, Sichuan Province were selected as the research objects by convenience sampling method. The Sense of Coherence Scale, Nurses' Job Stressors Scale and SCL-90 were used to investigate their sense of coherence, job stressors and mental health status, respectively. Pearson correlation test was used to analyze the correlation among them, and the structural equation model was constructed to explore the mechanism of them. <b>Results:</b> A total of 1693 nurse practitioners were included. The total scores of sense of coherence, job stressors and SCL-90 were (65.00±14.01) points, (69.08±18.38) points and (129.68±52.99) points, respectively. The mean scores of all dimensions of sense of coherence of nurse practitioners were negatively correlated with the mean scores of all dimensions of job stressors and SCL-90 (<i>P</i><0.001). And there were positive correlations between the mean scores of all dimensions of job stressors and the mean scores of all dimensions of SCL-90 (<i>P</i><0.001). The structural equation model fitted well. The path coefficient between job stressors and sense of coherence was -0.372 (<i>P</i><0.001), and the path coefficient between sense of coherence and SCL-90 score was -0.647 (<i>P</i><0.001) . <b>Conclusion:</b> The sense of coherence plays a significant buffering role in job stressors and mental health of nurses practitioners. Nursing managers should be committed to improving the level of sense of coherence of nurses, enhance the happiness of nurses at work, and improve their mental health level.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"845-851"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Investigation and analysis of work-related musculoskeletal disorders among scientific researchers in computer workstation of an aerospace high-tech enterprise].","authors":"Y W Cui, H J Zhang, S M Lin, J Bao, S H Han, H N Wang","doi":"10.3760/cma.j.cn121094-20231213-00152","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20231213-00152","url":null,"abstract":"<p><p><b>Objective:</b> To analyze the current situation and influencing factors of work-related musculoskeletal disorders (WMSDs) among scientific researchers in a computer workstation of a high-tech aerospace enterprise, and to provide data support for the improvement of occupational health management policies in this type of enterprise. <b>Methods:</b> From March to April 2023, using convenient sampling method, 1398 scientific researchers using computer workstations in an aerospace high-tech enterprise in Beijing were selected as the research subjects. The incidence of WMSDs in various parts of the body was investigated by using the Musculoskeletal Disorders Questionnaire, and the influencing factors of WMSDs in neck, lower back, shoulder and upper back were analyzed by logistic regression. <b>Results:</b> The total incidence of WMSDs was 55.4% (774/1398) in the scientific researchers who used computer workstations. The top 4 body parts in WMSDs incidence were neck (24.3%, 340/1398), lower back (20.4%, 285/1398), shoulder (18.7%, 262/1398), upper back (12.7%, 177/1398). The results of multivariate logistic regression analysis showed that feeling slightly tired and tired after work, setting a rest/break time of 10 to 15 min before the next continuous job, and operating computer for 2 to 4 hours and >4 hours were the influencing factors for the occurrence of neck WMSDs (<i>OR</i>=3.08, 1.90, 0.60, 2.00, 1.49, <i>P</i><0.05). Female, 5-<10 years of working experience, feeling slightly tired, tired and very tired after work, operating computer for 6-<8 hours and 8-10 hours a day were all the influencing factors for the occurrence of WMSDs in the lower back (<i>OR</i>=1.82, 0.64, 2.95, 1.80, 1.61, 1.82, 1.73, <i>P</i><0.05). Female, feeling slightly tired and tired after work were the influencing factors of shoulder WMSDs occurrence (<i>OR</i>=2.42, 2.09, 2.00, <i>P</i><0.05). Female, 5-<10 years, 10-15 years of working age, 1-3 times of physical exercise/quarter, feeling slightly tired, tired and very tired after work were the influencing factors for the occurrence of upper back WMSDs (<i>OR</i>=2.76, 2.19, 2.78, 0.48, 4.20, 2.66, 2.19, <i>P</i><0.05) . <b>Conclusion:</b> The incidence of WMSDs among scientific researchers in computer workstations of aerospace high-tech enterprises is high, which is closely related to individual characteristics and workstation usage characteristics. Measures should be taken to prevent and improve the WMSDs status of scientific researchers.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"837-844"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Protective effect of astaxanthin on acute liver injury induced by α-amanitin in mice].","authors":"Y P Luo, J J Zhong, Q M Yao, Z X Geng, C G Chen, C M Yu","doi":"10.3760/cma.j.cn121094-20231127-00133","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20231127-00133","url":null,"abstract":"&lt;p&gt;&lt;p&gt;&lt;b&gt;Objective:&lt;/b&gt; To explore the protective effect of astaxanthin on acute liver injury induced by α-amanitin in mice. &lt;b&gt;Methods:&lt;/b&gt; In June 2023, 42 healthy SPF male Kunming mice were selected. The mice were divided into blank control group, model (0.45 mg/kg α-amanitin) group, olive oil (10 ml/kg olive oil) group, low dose (20 mg/kg) astaxanthin group, medium dose (40 mg/kg) astaxanthin group, high dose (80 mg/kg) astaxanthin group and silybin (20 mg/kg) group by random number table method. Each group had 6 animals. Mice in the blank control group were intraperitoneally injected with 10 ml/kg normal saline, and mice in the other group were injected with α-amanitin. After that, the blank control group and model group were infused with 10 ml/kg normal saline, olive oil group and astaxanthin groups were given olive oil and astaxanthin according to dose by gavage, and silybin group was injected with silybin by dose. The drug was administered once every 12 h for a total of 4 doses. After 60 h, the mice were killed, the liver weight was weighed, and the liver index was calculated. The contents of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) in serum of mice were detected, and the contents of superoxide dismutase (SOD), reduced glutathione (GSH), catalase (CAT), malondialdehyde (MDA) in liver tissues were also detected. One-way analysis of variance (ANOVA) was used to compare the difference of indexes among each group, and pairwise comparison was performed by Dunnett-&lt;i&gt;t&lt;/i&gt; test. &lt;b&gt;Results:&lt;/b&gt; The mice in the blank control group had smooth hair color, good spirit and normal behavior, while the mice in the other groups showed varying degrees of retardation and decreased diet, and no death occurred in each group. Body mass[ (26.67±1.51) g] and liver mass[ (1.23±0.14) g] in model group were significantly lower than those in blank control group [ (33.50±2.43) g and (1.87±0.16) g], and the differences were statistically significant (&lt;i&gt;P&lt;/i&gt;&lt;0.05). The liver index [ (5.39±0.32) %, (5.83±0.30) %, (5.75±0.24) % and (5.78±0.16) %] in low, medium and high dose astaxanthin groups and silybin group were significantly higher than those in model group [ (4.61±0.12) %], and the differences were statistically significant (&lt;i&gt;P&lt;/i&gt;&lt;0.05). Serum ALT and AST contents in model group [ (153.04±13.96) U/L and (59.08±4.03) U/L] were significantly higher than those in blank control group [ (13.77±1.29) U/L and (10.21±0.35) U/L], and the differences were statistically significant (&lt;i&gt;P&lt;/i&gt;&lt;0.05). The contents of CAT, GSH and SOD in liver tissues of model group [ (9.40±2.23) U/mgprot, (3.09±0.26) μmol/gprot and (48.94±3.13) U/mgprot] were significantly lower than those of blank control group [ (26.36±2.92) U/mgprot, (6.76±0.71) μmol/gprot and (89.89±4.17) U/mgprot], the differences were statistically significant (&lt;i&gt;P&lt;/i&gt;&lt;0.05). MDA content[ (6.33±0.24) nmol/mgprot] in liver tissue of model group was significantly higher than that of blank c","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"801-806"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Study on serum proteomic characteristics of workers with rare earth samarium oxide pneumoconiosis].","authors":"X H Wang, R X Ding, T Ma, Y N Bi, H J Yin","doi":"10.3760/cma.j.cn121094-20230512-00170","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20230512-00170","url":null,"abstract":"<p><p><b>Objective:</b> To screen differential proteins in the serum of workers with rare earth samarium oxide pneumoconiosis, in order to provide new ideas for finding its early diagnostic biomarkers. <b>Methods:</b> In April 2019, three male workers diagnosed with samarium oxide pneumoconiosis at a rare earth factory in Baotou City, Inner Mongolia Autonomous Region were selected as the observation group, and three male workers who were not exposed to dust were selected as the control group. The serum was sequenced using the Label-free proteomic method to screen for differentially expressed proteins, followed by cluster of orthologous groups of proteins (COG) annotation, gene ontology (GO) enrichment analysis, and Kyoto encyclopedia of genes and genomes (KEGG) pathway analysis. The interaction gene library retrieval tool database and Cytoscape 3.9.1 software were used to draw protein-protein interaction networks. CytoHubba plugin was used to screen for differentially expressed proteins with high scores, and real-time fluorescence quantitative polymerase chain reaction (RT/q-PCR) was used to validate the proteomic sequencing results. <b>Results:</b> A total of 45 up-regulated differentially expressed proteins and 5 down-regulated differentially expressed proteins were screened out in the serum of workers with rare earth samarium oxide pneumoconiosis. In the COG functional classification, post-translational modifications, protein turnover, and chaperones were the most numerous. GO enrichment included 25 entries for biological processes such as complement activation (classical pathways), 15 entries for cellular components such as extracellular recombinants, and 10 entries for molecular functions such as protein binding. The pathways identified by KEGG enrichment analysis mainly included infectious diseases, immune system, signal transduction, and immune related diseases. The top 10 scoring proteins were haptoglobin, complement C1r subcomponent, complement C1s subcomponent, apolipoprotein C-Ⅲ, apolipoprotein A-Ⅱ, prothrombin, afamin, complement component C8 gamma chain, complement component C6, complement component C7. The RT/q-PCR validation results showed that the mRNA expression levels of haptoglobin, prothrombin and complement C1s subcomponent in the observation group were significantly higher than those in the control group, and the differences were statistically significant (<i>P</i><0.05) . <b>Conclusion:</b> Ten differentially expressed proteins in the serum of workers with rare earth samarium oxide pneumoconiosis are screened, which provides a good idea for the screening of biomarkers for early diagnosis of samarium oxide pneumoconiosis.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"807-814"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[The prognostic value of BAP1 protein loss in patients with malignant mesothelioma].","authors":"Y Q Chen, Z B Gao, W Shen, S B Ying, X L He, X Zhang, Z Q Jiang, J L Lou","doi":"10.3760/cma.j.cn121094-20240112-00016","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20240112-00016","url":null,"abstract":"<p><p><b>Objective:</b> To explore the prognostic value of BRCA1-associated protein 1 (BAP1) expression loss in patients with malignant mesothelioma (MM) . <b>Methods:</b> A total of 82 MM patients from January 1998 to December 2017 in Zhejiang Province were selected to detect the expression of BAP1 protein by immunohistochemical analysis. Kaplan-Meier method was used to draw the survival curve, and multivariate Cox proportional risk model was used to analyze the factors affecting the survival rate. <b>Results:</b> Among 82 MM patients, 61 (74.4%) were female, aged (57±11) years. BAP1 protein expression was deficient in 39 patients (47.6%). The survival rate was correlated with the loss of BAP1 protein expression and age (χ(2)=5.27, 5.66, <i>P</i>=0.022, 0.017). Subgroup analysis showed that loss of BAP1 protein expression was associated with better prognosis in MM patients <57 years of age, female, pleural MM, epithelial MM, and treated with drugs or surgery (<i>P</i><0.05). Multivariate model results showed that positive expression of BAP1 protein (<i>HR</i>=3.75, 95%<i>CI</i>: 2.23-6.30, <i>P</i><0.001) and age ≥57 years (<i>HR</i>=1.66, 95% <i>CI</i>: 1.01-2.72, <i>P</i>=0.049) were risk factors for survival in patients with MM. <b>Conclusion:</b> Loss of BAP1 protein expression may be an independent prognostic factor in patients with MM, which is associated with longer survival.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"815-820"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Analysis of the influencing factors of abnormal blood pressure and electrocardiogram in occupational motor vehicle drivers].","authors":"Y M Zheng, S Q Li, Z M Zhao, L X Guo, Y H Li, L Guan","doi":"10.3760/cma.j.cn121094-20240103-00002","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20240103-00002","url":null,"abstract":"<p><p><b>Objective:</b> To explore the influencing factors of abnormal blood pressure and electrocardiogram (ECG) in occupational motor vehicle drivers. <b>Methods:</b> In January 2024, a cluster sampling method was used to study 606 occupational motor vehicle drivers from a transportation service enterprise in Beijing who completed occupational health examination in 2023 in Peking University Third Hospital as observation group and 596 non-occupational motor vehicle drivers as control group. The data of personal history, occupational history, blood pressure and ECG were collected, and the effects of occupational motor vehicle driving on hypertension and ECG were analyzed by multivariate logistic regression. <b>Results:</b> The age of workers in the observation group was (34.1±7.8) years old, and the length of service was (7.0±7.1) years. The age of the control group was (33.8±7.6) years old, and the working age was (7.7±6.5) years. There was no significant difference in age and length of service between the two groups (<i>t</i>=0.62, -1.90, <i>P</i>=0.538, 0.057). Systolic blood pressure (133.0±14.7) mmHg, diastolic blood pressure (83.7±11.6) mmHg, hypertension detection rate of 33.0% (200/606), ECG abnormality detection rate of 39.9% (242/606). They were significantly higher than those in the control group [ (127.8±14.4) mmHg, (77.5±11.0) mmHg, 24.7% (147/596), 31.0% (185/596) ], and the differences were statistically significant (<i>P</i><0.05). Multivariate logistic regression analysis showed that occupational motor vehicle driving were risk factors for hypertension and abnormal ECG (<i>OR</i>= 1.210, 1.578; 95% <i>CI</i>: 1.145-1.231, 1.237-2.012; <i>P</i><0.001) . <b>Conclusion:</b> Occupational motor vehicle driving may increase the risk of hypertension and abnormal ECG in workers.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"821-825"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research progress on hidden hearing loss].","authors":"B Wang, J Jiao","doi":"10.3760/cma.j.cn121094-20240111-00012","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20240111-00012","url":null,"abstract":"<p><p>Hidden hearing loss (HHL) is a type of hearing impairment characterized by normal pure tone threshold audiometry (PTA) but impaired speech recognition and coding ability in noisy environments. At present, synaptic and nerve damage is the most likely pathological mechanism of HHL. Noise exposure, aging and ototoxic drugs may affect the occurrence of HHL, but its clinical manifestations and routine examinations have no obvious abnormalities, which may easily lead to missed diagnosis of HHL. This article reviews the current research status of HHL, including its possible pathogenesis, influencing factors, clinical diagnosis and treatment methods, and puts forward its future research direction, in order to provide basis for the early prevention, diagnosis and treatment of HHL.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"876-880"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research progress on the Copenhagen Psychosocial Questionnaire in the prevention and control of workplace psychosocial hazards].","authors":"Y M Huang, M Zhang, C N He","doi":"10.3760/cma.j.cn121094-20231016-00088","DOIUrl":"10.3760/cma.j.cn121094-20231016-00088","url":null,"abstract":"<p><p>Workplace psychosocial hazards may be related to job content or work schedule, specific characteristics of the workplace or opportunities for career development. They can lead to significant losses and harm to workplace relationships, labor participation, productivity and quality within the workplace. This article introduces the definition, types and occupational hazards of workplace psychosocial hazards, as well as the theoretical source, main features and update of the version of the assessment tool Copenhagen Psychosocial Questionnaire, and provides suggestions for the assessment, monitoring, and future scientific research on workplace psychosocial hazards in China.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"869-876"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research on optimization technology of ventilation system in an industrial X-ray inspection workshop].","authors":"Y Guan, Z X Guo, X J Zhang, C Wang, X P Li, Q D Wu, S Wang, D L Chai","doi":"10.3760/cma.j.cn121094-20240124-00036","DOIUrl":"https://doi.org/10.3760/cma.j.cn121094-20240124-00036","url":null,"abstract":"<p><p><b>Objective:</b> To investigate the reasonable airflow organization and exhaust system facilities during the operation of the inspection workshop, and solve the problem of the accumulation of harmful gases such as ozone and nitrogen oxides in the workshop. <b>Methods:</b> In May 2023, computational fluid dynamics (CFD) technology was used to numerically simulate the diffusion of ozone and nitrogen oxides generated by industrial radiographic inspection operations, and the comparative detection method was used to analyze the ozone and nitrogen oxides concentrations before and after the renovation of the ventilation system of the inspection workshop. <b>Results:</b> After the renovation of ventilation system, the average concentration of ozone in the inspection workshop decreased from 0.81 mg/m(3) to 0.03 mg/m(3), and the average concentration of nitrogen oxides decreased from 0.42 mg/m(3) to 0.01 mg/m(3), and the differences were statistically significant (<i>t</i>=20.51, 10.38, <i>P</i><0.001) . <b>Conclusion:</b> The ventilation facilities of the inspection workshop are set up in the airflow organization mode of sending up and down the exhaust, and the ventilation pipes are scientifically designed through the calculation of ventilation hydraulic balance, which can effectively control the concentration of harmful gases in the inspection workshop.</p>","PeriodicalId":23958,"journal":{"name":"中华劳动卫生职业病杂志","volume":"42 11","pages":"862-868"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}