Objective To investigate the current status of job satisfaction，occupational burnout and turnover intention among rural doctors，analyze differences based on demographic variables and explore the relationship between the three，and propose practical measures and strategies to improve job satisfaction，reduce occupational burnout，and alleviate turnover intention among rural doctors. Methods From February to May 2024，a stratified cluster sampling method was used to select 251 rural doctors from three counties and four districts in Huizhou City as survey subjects. The t-tests and ANOVA were performed for inter-group comparisons，and correlation and multiple linear regression analysis were used for multifactor analysis. Results The overall job satisfaction score of the surveyed rural doctors was（63.77±8.54）points，indicating a moderate level of satisfaction. The overall job burnout score was （43.17±18.69）points，indicating a low level of job burnout. The turnover intention score was （8.10±4.16）points，indicating a moderate level of turnover intention. The comparison of job satisfaction scores and occupational burnout scores among rural doctors with different health conditions showed statistically significant differences（both P<0.05）. There was a statistically significant difference in the turnover intention scores of rural doctors with different income levels（P<0.05）. The five dimensions of job satisfaction were negatively correlated with the three dimensions of occupational burnout，and negatively correlated with turnover intention（all P<0.05）. The three dimensions of job burnout were positively correlated with turnover intention（all P<0.05）. Multiple linear regression analysis showed that overall satisfaction，welfare satisfaction，and career development satisfaction predicted occupational burnout（all P<0.05），welfare satisfaction had predictive effects on turnover intention（P<0.05），and depersonalization and low sense of accomplishment within occupational burnout had predictive effects on turnover intention（both P<0.05）. Conclusion The rural doctors in Huizhou City have a moderate level of job satisfaction，low occupational burnout，and a moderate level of turnover intention. The job satisfaction is negatively correlated with occupational burnout and turnover intention，while occupational burnout is positively correlated with turnover intention. Overall satisfaction，welfare satisfaction，and career development satisfaction are the main dimensions affecting occupational burnout. Welfare satisfaction，depersonalization，and low sense of accomplishment are important dimensions affecting turnover intention.

Objective To monitor the current status of occupational disease hazards in the workplaces of key industries in Hainan Province from 2019 to 2023，and provides a scientific basis for the formulation of prevention and control policies for occupational disease in Hainan Province. Methods The monitoring data on workplace occupational hazards in key industries in Hainan Province from 2019 to 2023 were collected，the trend chi-square test was used to analyze the trend of their occupational disease hazards monitoring，enterprise occupational hygiene training status，workers' occupational health examinations，personal protective equipment and enterprise occupational disease hazards testing. Results A total of 1 088 enterprises were monitored from 2019 to 2023，of which the scale of enterprises was mainly small and micro，accounting for 53.95% and 41.18%，respectively. The over-standard rate of occupational hazards monitoring in enterprises was 54.32%，and the exposure rate of occupational hazards was 36.99%. The over-standard rate in different years showed an increasing trend year by year，while the exposure rate showed a decreasing trend year by year（both P<0.05）. The training rates of enterprise leaders，occupational health managers and workers receiving occupational health-related training were 74.45%，73.07% and 77.87%，respectively，and the training rates showed an increasing trend year by year（all P<0.05）. The abnormal rates of noise，dust and chemical factors in occupational health examinations were 2.52%，2.42% and 0.40%，respectively. The abnormal rates of various health examinations showed an increasing trend（all P<0.05）. The distribution rates of dust masks，noise-proof earplugs or earmuffs and gas masks or masks in enterprises were 84.72%，76.38% and 47.34%，respectively，and the distribution rates showed an increasing trend year by year（all P<0.05）. The setting rates of dust-proof facilities，gas-proof facilities and noise-proof facilities in enterprises were 89.68%，51.60% and 71.51%，respectively，and the setting rates showed an increasing trend year by year（all P<0.05）. The dust monitoring over-standard rate in key industries workplaces and posts/types of work and the noise monitoring over-standard rate in posts/types of work had been decreasing year by year（all P<0.05）. Conclusion The exposure rate of dust and noise in key industries workplaces and the abnormal rate of occupational health examinations in Hainan Province are relatively high，and the hazards of chemical factors in the workplace cannot be ignored. Strengthening occupational health training and regular monitoring of occupational disease hazards in enterprises throughout the province can reduce the risk of occupational diseases.

Objective To investigate the current situation and influencing factors of job burnout among nursing staff in grade-A tertiary hospitals in Hunan Province，and to propose targeted and practical solutions，providing reference for assisting medical institutions to formulate intervention measures and management mechanisms. Methods From September to December 2023，1 752 nursing staff from 20 grade-A tertiary hospitals in Hunan Province were randomly selected as the survey subjects. A general information questionnaire and Maslach burnout inventory（MBI） were used for the questionnaire survey，and the data were analyzed. Results The detection rate of job burnout among 1 752 nurses was 67.58%，and the prevalence rates for mild，moderate，and severe job burnout were 12.44%，20.78%，and 34.36%，respectively. Age，educational level，marital status，quantity of children，monthly income，department，weekly working time，self-rated health，occupational environment were the important factors affecting whether or not nurses had emotional exhaustion（all P<0.05）. Form of employment，self-rated health，fringe benefits were the key influencing factors of low sense of personal accomplishment（all P<0.05）. Monthly income，self-rated health，fringe benefits，salary return were the essential influencing factors of depersonalization（all P<0.05）. Conclusion The detection rate of job burnout among nurses in grade-A tertiary hospitals in Hunan Province is high，especially in the aspect of emotional exhaustion，and self-rated health is the most important influencing factor.

Objective To deeply analyze the dynamic changes in psychological resilience of newly diagnosed pneumoconiosis patients using the latent class growth model（LCGM），and explore its influencing factors，in order to assist clinical identification of individuals with potential low resilience. Methods A total of 278 newly diagnosed pneumoconiosis patients from a grade-A tertiary hospital in Hunan Province，diagnosed between January and December 2023，were selected as the research subjects. The general information survey questionnaire，the social support rating scale（SSRS），the family care index scale（APGAR）， the simplified coping style questionnaire（SCSQ），and the 10-item Connor-Davidson resilience scale（CD-RISC-10） were administered to patients within 24 hours of admission（T0），1 month after diagnosis（T1），3 months after diagnosis（T2），and 6 months after diagnosis（T3）. Ordinal multivariate logistic regression analysis was employed to investigate the differences in psychological resilience changes among newly diagnosed pneumoconiosis patients with different demographic characteristics. Results The results of LCGM revealed that the trajectories of psychological resilience changes in newly diagnosed pneumoconiosis patients could be categorized into three types：psychological resilience growth type，psychological resilience stability type，and psychological resilience decline type. Among the 278 newly diagnosed pneumoconiosis patients，68（24.5%） exhibited resilience growth，163（58.6%） exhibited resilience stability，and 47（16.9%） exhibited resilience decline. The results of multiple ordinal logistic regression analysis showed that the differences were statistically significant（all P<0.05）. Conclusion The psychological resilience of newly diagnosed pneumoconiosis patients can be categorized into three trajectories：psychological resilience growth type，psychological resilience stability type，and psychological resilience decline type，with the majority of patients falling into the resilience stability category. Healthcare providers should give sufficient attention to these patients and actively implement psychological interventions to enhance the psychological resilience of newly diagnosed pneumoconiosis patients，ensuring both physical and mental well-being.

Objective To understand the current situation of occupational noise hazards in key industry enterprises in a certain district of Shenzhen，laying a scientific foundation for formulating targeted preventive and control countermeasures. Methods From 2022 to 2024，370 key industry enterprises with noise hazards were selected as the research objects. By collecting basic enterprise information，implementing hygienic surveys，noise operation post detections and evaluations on the production site in accordance with various industry standards，and comprehensively evaluating the use of personal protective equipment according to relevant guidelines. Results From 2022 to 2024，the rate of enterprises with excessive noise was 45.68%，and the rate of excessive noise points was 29.82%. The differences in the rate of excessive noise points among enterprises in different years were statistically significant（χ²=20.101，P<0.01）. Large/medium-sized enterprises had the most serious excessive noise situation，and the differences in the rate of enterprises with excessive noise and the rate of excessive noise points among enterprises of different scales were both statistically significant（χ²=20.911，41.190，both P<0.01）. The furniture manufacturing industry and the metal manufacturing industry had the highest levels of excessive noise，and the differences in the rate of enterprises with excessive noise and the rate of excessive noise points among enterprises of different industry categories were both statistically significant（χ²=45.253，407.060，both P<0.01）. Enterprises from Hong Kong，Macao，and Taiwan had the highest rate of excessive noise and the lowest rate of excessive noise points，and the differences in the rate of excessive noise points among enterprises of different economic types were statistically significant（χ²=11.422，P<0.01）. In addition，16.78% of the monitoring points did not have protective facilities installed，and 22.68% of the workers at noise-exposed positions did not receive or wear ear protectors. Conclusion The noise hazards in key industry enterprises in a certain district of Shenzhen cannot be ignored. There are differences in noise over-standard situations and the implementation of protective measures among enterprises of different scales，industry categories and economic types. It is necessary to formulate targeted noise prevention and control strategies and strengthen occupational health management.

Objective To establish a graphite furnace atomic absorption method for the determination of bismuth telluride in the workplace environment. Methods Preparation of microporous filter membrane samples using bismuth telluride standard material. After treatment，palladium nitrate and magnesium nitrate were used as matrix modifiers for graphite furnace atomic absorption spectroscopy to measure bismuth atomic content and calculate bismuth telluride. Results The linear relationship between 0-100 μg/L was good，the correlation coefficient（r） was 0.999 3，and the detection limit of the method was 3.252 μg/L. Based on the collecting of 75 L of air sample，the minimum detection concentration was 0.83 μg/m³，the recovery rate was 96.8% to 103.2%，the relative standard deviation was less than 5% and the sample can be stored for at least 7 days under sealed conditions at room temperature. Conclusion This method uses low toxicity bismuth instead of toxic tellurium for detection to reduce the risk of poisoning for experimental personnel，avoid interference from coexisting tellurides in the sampling site，and does not require the use of expensive inductively coupled plasma emission spectrometers，making it easy to popularize and apply. This method has a small sample requirement，low detection limit，sensitivity and accuracy that meet methodological requirements，the instrument has a high degree of automation，and the operation is simple，which can be used for the detection of bismuth telluride in the workplace environment.

Objective To develop an efficient sequencing method for directly obtaining the whole-genome sequence of human coronavirus OC43（HCoV-OC43） from clinical samples，providing a critical technical means for genome sequencing and phylogenetic analysis of HCoV-OC43. Methods Specific primers were designed for different subtypes of HCoV-OC43 by using amplicon-based sequencing technology，patch primers were further optimized to compensate for missing regions，enabling the amplification of two overlapping segments to reconstruct the full genome sequence，and quality control was performed on both primers and sequencing data. Additionally，the effects of different amplification reaction systems and viral loads on amplification efficiency and sequencing quality were compared. Results The established method efficiently retrieved whole-genome sequences of HCoV-OC43，achieving genome coverage ≥98% and an average sequencing depth of ≥1 500×，with high specificity and sensitivity. Among 41 HCoV-OC43-positive clinical samples，31 genome sequences were successfully obtained，including 22 whole-genome sequences，8 N gene sequences，and 1 S gene sequence. Phylogenetic analysis revealed discrepancies between classifications based on different sequence fragments. Conclusion The proposed sequencing method is suitable for obtaining whole-genome sequences from HCoV-OC43-positive clinical samples with Ct values <32，which provides technical support and scientific data for molecular surveillance and the prevention and control of respiratory viruses.

Objective To understand the content of mercury in common freshwater fish and snails in aquatic products from the tributaries of Yongjiang in Guangxi，and to evaluate the health risks. Methods From August to December 2024，461 samples of 10 species of freshwater fish and snail were collected from two tributaries of the Yongjiang river in Guangxi Zhuang Autonomous Region. The mercury content in the edible parts of aquatic products was determined using the direct mercury analyzer method. The pollution level and health risk were evaluated using the single factor pollution index method and target hazard quotient，and the correlation analysis between mercury content and weight in some fish species was conducted. Results The highest content of mercury among the 11 aquatic products from the Yongjiang in Guangxi Zhuang Autonomous Region was topmouth culter，but the mercury content in all aquatic products did not exceed the standard. The single pollution index showed that 4.4% of silver carps and 100.0% of topmouth culters were mildly polluted by mercury，while the rest of the fish species were at normal background levels. The health risk assessment results indicate that the target hazard quotient for topmouth culters was greater than 1，while the target hazard quotients for the other ten types of aquatic products were less than 1. According to correlation analysis，it was found that there was a significant correlation between the levels of mercury and weight in the dorsal muscles of silver carp and mirror carp. Conclusion All aquatic products sourced from Yongjiang in Guangxi in this collected samples exhibited no instances of mercury exceeding safe limits，with the mercury contamination in the samples remaining at a relatively low level. With the exception of carnivorous fish like the predatory carp，the prolonged consumption of the remaining ten species of aquatic products from Yongjiang in Guangxi poses no significant risk to human health.

Objective To investigate the current status of boundary flexibility，work-family conflict and work-family balance of obstetrics and gynecology nurses，and to analyze the impact of boundary flexibility and work-family conflict on work-family balance. Methods From September to October 2024，184 obstetrics and gynecology nurses from 9 grade-A tertiary hospitals in Shanghai were selected as the survey subjects by simple random sampling. The boundary flexibility scale，work-family conflict scale and work-family balance scale were used to evaluate the impact of boundary elasticity and work-family conflict on work family-balance levels. Pearson correlation analysis was used to analyze the correlation between boundary elasticity，work-family conflict，and work-family balance among obstetrics and gynecology nurses. The mediation effect test method was used to analyze the mediating effect of work-family conflict on the boundary elasticity and work-family balance of obstetrics and gynecology nurses. Results The boundary flexibility score of obstetrics and gynecology nurses was （48.33±8.84）points，the work-family conflict score was （52.48±9.64）points，and the work-family balance score was （55.86±9.37）points. The influencing factors of work-family balance of obstetrics and gynecology nurses were age，years of work experience，professional title，marital status，average monthly income，and average number of night shifts per month（all P<0.05）. There was a positive correlation between boundary flexibility and work-family balance among obstetric and gynecological nurses（r=0.608，P<0.01），a negative correlation between work-family conflict and work-family balance（r=-0.542，P<0.01），and a negative correlation between boundary flexibility and work-family conflict（r= -0.584，P<0.01）. Work-family conflict played a partial mediating role between boundary flexibility and work-family balance among obstetric and gynecological nurses，with a mediating effect value of 0.254，accounting for 42.55% of the total effect. Conclusion Work-family conflict played a partial mediating role between boundary flexibility and work-family balance among obstetric and gynecological nurses. Improving the level of boundary flexibility of obstetric and gynecological nurses and reducing their level of work-family conflict are conducive to improving their work-family balance.

Objective To investigate the effect of age，period，cohort and geographical space on the incidence and death of pulmonary tuberculosis，and to provide a reference basis for tuberculosis prevention and treatment efforts in China. Methods Age-period-cohort model was used to analyze changes in incidence and mortality of tuberculosis by age，period and cohort，and spatial statistical method was used to explore the spatial clustering of tuberculosis incidence and death. Results From 2005 to 2019，the incidence and mortality of pulmonary tuberculosis in China showed a decreasing trend year by year. The analysis results of age-period-cohort（APC） model showed that the incidence and mortality of pulmonary tuberculosis in Chinese people aged 10 years and older increased with age，and the incidence increased from 54.552/100 000 in the group aged 10-<15 years to 2 688.965/100 000 in the group aged ≥85 years（χ²_trend=1495.365，P<0.01），the mortality rate increased from 0.063/100 000 in the 10-<15 year old group to 46.882/100 000 in the ≥85 years group（χ²_trend=640.712，P<0.01）. Using 2010-2014 as the reference group，the rate ratio（RR） values of incidence and mortality of pulmonary tuberculosis among people aged 10 years and over in China showed a decreasing trend with the advance of time in 2005-2009 and 2015-2019. Using the 1965-1969 cohort as a reference，the RR for pulmonary tuberculosis incidence and mortality was significantly higher in those born before 1965 compared with those born after 1969，with increasing RR for incidence and mortality in those born 1934 and before，peaking in those born 1930-1934. Geographic information system（GIS） analysis results showed spatial clustering of tuberculosis incidence and death in China from 2005 to 2019，with Moran's Ⅰ>0 and Z>1.96，P<0.05. Local autocorrelation results showed that high tuberculosis incidence and mortality were concentrated in Xinjiang Uygur Autonomous Region and Xizang Autonomous Region，and low-low incidence was concentrated in the east and central regions. Conclusion Age-period-cohort is important factors affecting the incidence and mortality of tuberculosis，and there is a spatially clustering in the tuberculosis incidence and death. Therefore，it is necessary to increase screening of the elderly population，conduct tuberculosis knowledge campaigns，and increase the awareness rate of population health knowledge，while increasing economic aids in Xizang Autonomous Region and Xinjiang Uygur Autonomous Region to promote equity and accessibility in health resource allocation and protect population health.

Objective To understand the current status and influencing factors of the health emergency response capacity of emergency responders in primary disease control and prevention institutions（CDC） in Tianjin after natural disasters，so as to make suggestions for the improvement of emergency response capacity. Methods From July to September 2024，a convenience sampling method was used to select 955 emergency personnel from CDC in 16 districts of Tianjin for a questionnaire survey to understand their emergency response capabilities after natural disasters，and the data were analyzed. Results The overall score of the emergency response ability of 955 emergency responders from primary CDC in each district of Tianjin was （83.26±19.42）points. The number of times participating in natural disaster emergency response capacity training，the number of times participating in natural disaster emergency response exercises，and whether or not they had experience in on-site investigation and disposal were the main influencing factors of the health emergency response capacity of emergency responders from primary CDC in Tianjin after natural disasters（all P<0.05）. Conclusion The post-disaster health emergency response capacity of emergency personnel for natural disasters should be improved by increasing the intensity of natural disaster health emergency response capacity training and drills.

Objective To investigate the current status of occupational happiness among young and middle-aged doctors in grade-A tertiary hospitals in Heilongjiang Province，and provide reference for improving the level of occupational happiness among young and middle-aged doctors. Methods From March to May 2024，a convenience sampling method was used to select 320 middle-aged and young doctors from grade-A tertiary hospitals in Heilongjiang Province as the research subjects. A general information questionnaire and a medical worker occupational happiness scale were used for the questionnaire survey，and the data were analyzed. Results The occupational happiness score of young and middle-aged doctors in three grade-A tertiary hospitals in Heilongjiang Province was （59.40±8.20）points，with an average score of （2.48±0.34）points for each item. The results of independent sample t-test and analysis of variance showed that there were statistically significant differences in the scores of occupational happiness among middle-aged and young doctors of different ages，number of children，years of employment，professional title，night shift situation，and monthly income（all P<0.05）. The number of children（B=-2.798，P<0.01，VIF=1.147），years of employment（B=1.531，P<0.05，VIF=3.713），professional title（B=1.137，P<0.05，VIF=2.606），and monthly income（B=1.713，P<0.05，VIF=2.029） were the influencing factors of their level of occupational happiness. Conclusion The occupational happiness level of young and middle-aged doctors in grade-A tertiary hospitals in Heilongjiang Province is relatively low. Hospital managers should develop plans and strategies to improve their occupational happiness level based on the specific situation of young and middle-aged doctors.

Objective To investigate the current status of knowledge，attitude，practice of medical staff on the occupational protection of chemotherapeutic drugs，and analyze its influencing factors，so as to provide reference for the management of occupational protection of clinical chemotherapeutic drugs. Methods Convenience sampling was used to conduct a survey of medical staff in a grade-A tertiary comprehensive hospital in Shenzhen City from November to December 2023，using a general information questionnaire and a clinical chemotherapeutic drugs occupational protection knowledge，attitude，practice questionnaire. Univariate analysis and multiple linear regression were used to analyze the factors influencing the knowledge，attitude，and practice level in chemotherapy drug occupational protection among medical staff. Results A total of 339 medical staff were ultimately included，with a questionnaire response rate of 98.3%. The scores for knowledge，attitude，and practice regarding occupational protection against chemotherapy drugs among medical staff were （29.01±2.68），（12.62±1.52） and （21.07±2.05）points，respectively，with corresponding awareness rates of 80.6%，positive attitude rates of 78.9%，and health-promoting behavior rates of 75.3%. Quarterly training positively influenced the scores for knowledge，attitude，and practice dimensions，while non-oncology departments negatively influenced these dimensions（both P<0.05）. Years of work in the pharmacy intravenous admixture service（PIVAS） positively influenced the knowledge dimension score，belonging to the pharmacy department and years of work positively influenced the attitude dimension score，belonging to the pharmacy department positively influenced the practice dimension score，while educational level negatively influenced the practice dimension score（all P<0.05）. Conclusion The knowledge，attitude and practice of medical staff in a grade-A tertiary hospital in Shenzhen City on occupational protection against chemotherapy drugs are at a medium level，and need to be improved. We should give full play to the support of departmental resources，carry out effective training and reasonably utilize the method of transferring and assisting to improve the level of occupational protection against chemotherapeutic drugs of medical staff，so as to protect the occupational health of medical staff.

Objective To analyze the current situation of non-compliant tasks，psychological detachment and work-family conflict of nurses in trauma emergency surgery department，and to study the mediating role of psychological detachment between non-compliant tasks and work-family conflict. Methods From August to September 2024，a convenience sampling method was used to select 186 nurses from the trauma emergency surgery departments of 10 grade-A tertiary comprehensive hospitals in Hebei Province as the survey subjects. The non-compliant task scale，psychological detachment scale，and work-family conflict scale were used for investigation and analysis. Results The scores of non-compliant tasks，psychological detachment and work-family conflict of nurses in trauma emergency surgery department were （27.39±5.48），（12.43±2.46） and （60.58±12.42）points. The influencing factors of non-compliant task scores of nurses in trauma emergency surgery department included age，professional title，nursing experience，marital status，average monthly income and average monthly number of shifts（all P<0.05）. The influencing factors of psychological detachment scores of trauma emergency surgery nurses were gender，age，professional title，nursing experience，marital status，number of children，average monthly income，and average monthly number of shifts（all P<0.05）. The influencing factors of work-family conflict scores of trauma emergency surgery nurses were age，professional title，nursing experience，marital status，number of children，average monthly income，and average monthly number of shifts（all P<0.05）. There was a positive correlation between non-compliant tasks and work-family conflict among trauma emergency surgery nurses（r=0.604，P<0.01）. Psychological detachment of trauma emergency surgical nurses was negatively correlated with work-family conflict and non-compliant tasks（r= -0.584，-0.512，both P<0.01）. Psychological detachment of trauma emergency surgery nurses partially mediated the relationship between non-compliant tasks and work-family conflict，with a mediating effect value of 0.250，accounting for 42.81% of the total effect. Conclusion Psychological detachment plays a partial mediating role between non-compliant tasks and work-family conflict in trauma emergency surgery nurses. Reducing the level of non-compliant tasks and increasing the level of psychological detachment can help alleviate the level of work-family conflict in trauma emergency surgery nurses.

Objective To investigate the current status of professional adaptability among newly-recruited civilian personnel in the military，analyze its relationship with organizational identity，and explore the mediating effect of work engagement between the two，providing a reference for strengthening the modernization of the military. Methods From September to November 2024，a convenient sampling method was used to select 268 civilian personnel participating in initial training for medical positions in a certain military unit as the study subjects. Questionnaires were conducted using the organizational identity scale，work engagement scale and professional adaptability scale，and the data were analyzed. Results The total average score for professional adaptability among the 268 newly-recruited civilian personnel was （5.80±0.76）points，indicating an above-average level. There was a significant positive correlation between organizational identity，work engagement，and professional adaptability among the newly-recruited civilian personnel. Work engagement had a partial mediating effect between organizational identity and professional adaptability，with a mediation effect of 50.05%（P<0.05），accounting for 54.62% of the total effect. Conclusion Military managers should create a favorable organizational environment and improve the level of work engagement among newly-recruited civilian personnel to facilitate their better integration into military life.

Objective To investigate the current status of occupational stability among primary medical staff and analyze its influencing factors. Methods A questionnaire survey was conducted among 608 medical personnel from all primary healthcare institutions（7 community health service centers and 57 community health service stations） in Pukou District of Nanjing City from February to March 2022. The occupational stability was measured using a turnover intention scale，and the data were analyzed. Results The occupational stability score of 608 primary medical staff in Pukou District was （2.04±0.06）points. The comparison of occupational stability scores among primary medical staff of different ages，educational backgrounds，years of work experience，average monthly income，and job characteristics showed statistically significant differences（all P<0.05）. Age，working hours，career prospects，and hospital culture were factors that affected the occupational stability of primary medical staff（all P<0.05）. Conclusion The overall occupational stability of primary medical staff in Pukou District of Nanjing City is relatively good，but there is a low willingness to invest in work. After excluding the effects of general demographic factors，working hours，career prospects，and hospital culture emerged as the key hygiene factors influencing the occupational stability of primary medical staff.

Objective To investigate the current health related quality of life（HRQoL） status of the occupational population in Nanjing City，and provide some reference for improving the HRQoL of the occupational population. Methods A multi-stage random sampling method was used to randomly select permanent residents aged 30-<60 years in five administrative districts of Nanjing City in 2023 for investigation. The social demographic information，lifestyle and behavior，major chronic disease history，and family history of the survey subjects were collected. The SF-12 scale was used to measure the HRQoL for each participant，and multi factor analysis of variance was introduced to compare the differences in HRQoL between different occupations. Results The average scores of SF-physical component summary（PCS） and SF-mental component summary（MCS） for 22 340 study subjects were （55.94±4.90） and （40.44±4.79）points，respectively. There were statistically significant differences in SF-PCS scores between different age，gender，place of residence，education level，marital status，and body mass status（all P<0.05），while no statistically significant differences in SF-MCS scores between these variables（all P>0.05）. The SF-PCS scores for unemployed or domestic workers，industrial workers，business or service industry practitioners，government officials，and technical personnel were （54.02±6.30），（56.36±4.48），（56.33±4.51），（56.03±4.65） and （56.16±4.71）points，respectively，and multivariate analysis of variance showed that there was a statistically significant difference in SF-PCS scores among different occupational categories（F=50.176，P<0.01）. Meanwhile，the SF-MCS scores for unemployed or domestic workers，industrial workers，business or service industry practitioners，government officials，and technical personnel were （40.65±5.12），（40.65±4.85），（40.42±4.89），（40.20±4.65） and （40.48±4.56）points，respectively，with statistically significant differences（F=6.738，P<0.01）. Conclusion In 2023，the overall HRQoL of the occupational population in Nanjing City is in a moderate to low state，and different occupational groups have different scores.

Objective To understand the current situation of psychological violence，work withdrawal，and team psychological safety climate among emergency nurses in Nantong City，and to explore the mediating effect of team psychological safety climate on the relationship between psychological violence and job withdrawal behavior among emergency nurses. Methods From March to July 2024，286 emergency nurses in Nantong City were selected by convenience sampling method as research subjects. The general information questionnaires，workplace psychologically violent behaviors instrument，team psychological safety climate scale，and job withdrawal behavior scale were used for questionnaire surveys，and the data were analyzed. Results The psychological violence score of 286 emergency nurses in Nantong was （28.09±8.60）points，the team psychological safety climate score was （55.77±9.55）points，and the job withdrawal behavior score was （21.06±5.02）points. The team psychological safety climate of the emergency nursing team was negatively correlated with psychological violence and job withdrawal behavior（r=-0.412，-0.528，both P<0.01），while psychological violence was positively correlated with job withdrawal behavior（r=0.488，P<0.01）. The team psychological safety climate partially mediates the relationship between psychological violence and job withdrawal behavior among emergency nurses，and the mediating effect was 0.145，accounting for 29.35% of the total effect. Conclusion Psychological violence among emergency nurses in Nantong can directly affect their job withdrawal behavior，and can also indirectly affect job withdrawal behavior through the team psychological safety climate.

Objective To understand the activity of total α and β radiation in surface and groundwater in Qiqihar City，and to analyze the overall water quality situation，so as to achieve long-term monitoring and early warning，and ensure water safety for residents. Methods In the dry season from January to March and the wet season from June to August in 2024，the surface water and groundwater were collected respectively. The water samples were acidified，concentrated，charred，ashes，ground and coated，and compared with the standard materials. The dual-channel FYFS-400X low background α and β measuring instrument was used for analysis. Results A total of 162 water samples were collected from 27 sampling sites in Qiqihar City，and the total α and β activity concentrations ranged from 0.016-0.086 and 0.050-0.182 Bq/L，respectively. Among them，the share of Class Ⅰ water sources was 42.9%，and the share of Class Ⅱ water sources was 57.1%. Conclusion In 2024，the total α and β radioactivity of the water samples of Nenjiang River，Namur River，Uyur River，Yaru River and 15 water plants in Qiqihar City meet the relevant requirements，and meet the standards for drinking water.

Objective To investigate the annual dynamic changes of formaldehyde and benzene series in indoor air of hotels in Nanjing City，and assess the potential health risks for employees，providing data support and reference for the hotel industry to develop more effective hygiene management strategies and measures. Methods During 2021 to 2024，18 hotels will be randomly selected from various districts of Nanjing each year，totaling 72 hotels. A total of 287 air samples were collected to detect the concentrations of formaldehyde，benzene，toluene，and xylene in the hotel air. The Kruskal-Wallis H rank sum test was used to compare the concentrations of four air pollutants in different levels of hotel and different years. Further，according to the health risk assessment model recommended by the US National Environmental Protection Agency and the methods in WS/ T777-2021 "Technical Guidelines for Assessing Environmental Health Risks Posed by Chemical Substances"，the carcinogenic risk and non-carcinogenic risk assessment of the four pollutants were carried out in combination with the actual work environment exposure of employees obtained through a questionnaire survey. Results The overall pass rates were 91.30% for formaldehyde，100.0% for benzene，100.0% for toluene，and 100.0% for xylene. In 2021，2023，and 2024，the median mass concentrations of formaldehyde，benzene，and xylene showed a trend of M（express hotels）>M（hotels below three stars）>M（hotels above three stars）（P<0.05）. The median mass concentration of formaldehyde showed an overall upward trend from 2021 to 2024，the median mass concentrations of benzene，toluene，and xylene showed an overall downward trend. The carcinogenic risk value of formaldehyde was 6.97×10^-6-3.00×10^-4，and the carcinogenic risk value of benzene was 4.18×10^-7-1.25×10^-5. The median non-carcinogenic risk value of formaldehyde was greater than 1，while the non-carcinogenic risk values of benzene，toluene，and xylene were all less than 1. Conclusion From 2021 to 2024，there is a phenomenon of excessive formaldehyde concentration in the air of some hotels in Nanjing. Exposure to formaldehyde and benzene poses different risks to the health of hotel employees. Therefore，further in-depth analysis is needed and attention should be paid to it.

Objective To explore the influence of trait anxiety on choice deferral and the moderating role of information overload perception. Methods A total of 724 college students from two universities in Guizhou Province from September to December 2023 were selected as the survey subjects by convenience sampling method. General situation questionnaire，trait anxiety scale，information overload perception scale and choice deferral questionnaire were used to investigate，and the data were analyzed. Results The average scores of trait anxiety，information overload perception and choice deferral among 724 college students from two universities in Guizhou Province were （2.13±0.38），（1.51±0.54） and （4.43±1.57）points，respectively. Trait anxiety was positively correlated with choice deferral（r=0.225，P<0.01），information overload perception was positively correlated with choice deferral（r=0.111，P<0.01）. Trait anxiety could positively predict individuals' tendency towards choice deferral（β=0.230，P<0.01），and information overload perception negatively moderated the effect of trait anxiety on delay choice（β=-2.996，P<0.01）. Conclusion Trait anxiety can affect individuals' tendency to delay choice，and this influence is negatively regulated by information overload perception，that is，individuals with high trait anxiety have a stronger tendency to delay choice if they have a lower perception of information overload.

Objective To conduct a meta-analysis on the current status of psychological detachment and its influencing factors among nurses in China. Methods Relevant studies on the influencing factors of psychological detachment among nurses in China were searched in China National Knowledge Infrastructure，VIP Database，Wanfang Database，China Biomedical Literature Service System，PubMed，Embase，Cochrane Library，Web of Science，and other databases. The search period was from the inception of the databases to September 15，2024. Two analysts independently screened the literature，extracted data，and conducted quality assessments. Meta-analysis was performed using Stata 17.0 and RevMan 5.4 software. Results A total of 30 articles were included，involving 11 436 nurses，and 17 influencing factors of psychological detachment were ultimately extracted. The meta-analysis results showed that the psychological detachment score of Chinese nurses was 10.13（95%CI：9.30-10.97）points，and marital status，age，education level，weekly overtime hours，work shift system，years of work experience，professional burnout，work engagement，recovery experience，professional grief，job flourishing，sleep disorders，work-family conflict，relaxation experience，control experience，mastery experience，and workload were the main influencing factors of psychological detachment among nurses（all P<0.05）. Conclusion The level of psychological detachment among nurses in China is relatively low，and hospital managers can develop targeted intervention measures based on different influencing factors.

Objective To understand the allocation and utilization of radiological diagnosis and treatment resources in Dongcheng District of Beijing City，and provide reference for the rational allocation of radiological diagnosis and treatment resources by health administrative departments. Methods Based on the Beijing radiation health monitoring information system，a general survey was conducted in all radiological diagnosis and treatment institutions（excluding military hospitals and dental clinics） in Beijing Dongcheng District from April 1，2022 to March 31，2023.The investigation convered the following aspects：The allocation of four types of radiological diagnosis and treatment equipment，namely radiodiagnosis，radiotherapy，nuclear medicine and interventional radiology，the distribution of radiological workers and the frequency data of radiological diagnosis and treatment. The number and frequency of radiological diagnosis and treatment were calculated by the total number of permanent residents by the end of 2023 in Beijing Dongcheng District. Results There were 57 hospitals equipped with radiation-generating medical devices in Beijing Dongcheng District in 2023，with an average of 7.72 devices and 24.11 staff in each hospital. The personnel and equipment configuration of tertiary medical institutions were better than those of secondary and primary medical institutions，and the difference was statistically significant（H=22.463，24.480，both P<0.01）. 100.00% of the nuclear medicine equipment，81.25% of the radiotherapy equipment，and 84.85% of the interventional radiology equipment were concentrated in tertiary medical institutions，while primary and lower level institutions did not have nuclear medicine，radiation therapy，and breast X-ray detection equipment. There were 625 radiological diagnosis and treatment equipment per million population，including 78.13 CT machines，46.88 interventional radiology equipment，19.89 breast X-ray equipment，22.73 radiotherapy equipment，and 19.89 nuclear medicine related equipment. The total frequency of radiation exposure was 2 193 710，mainly focused on plain radiographs and computed tomography（CT） examinations，accounting for 41.73% and 49.70%，respectively. The annual frequency of examinations was 1 300.34 times/1 000 population and 1 548.59 times/1 000 population，respectively. The total frequency of medical radiological examinations was 3 116.07 times/1 000 population. Conclusion The application frequency of radiological diagnosis and treatment in Dongcheng District of Beijing City belongs to the level of level I healthcare，and the allocation of radiological diagnosis and treatment resources is relatively high，but the distribution is uneven in different levels of medical institutions. The health administrative department should fully utilize the advantages of medical consortia，effectively implement graded diagnosis and treatment，and improve the overall utilization rate of resources.

The prevalence and risk factors of work-related musculoskeletal disorders（WMSDs） have been extensively studied. However，research conclusions on the association between prolonged sitting/standing work and WMSDs are inconsistent，necessitating further analysis. This article summarizes the results of multi-factor logistic regression studies on the risks of prolonged sitting/the protective effects of prolonged standing，the protective effects of prolonged sitting/the risks of prolonged standing，and the lack of findings indicating that prolonged sitting/prolonged standing are influencing factors. Although most studies report negative results，prolonged sitting is more likely to be a risk factor for neck and shoulder WMSDs，while prolonged standing is more likely to be a risk factor for lower limb WMSDs. Therefore，it is essential to strengthen health protection for specific body regions among occupational groups with prolonged sitting/standing based on industry/job characteristics to curb the prevalence of WMSDs.

Pneumoconiosis is one of the serious occupational diseases in China，which is a systemic disease mainly caused by diffuse fibrosis of lung tissue due to long-term inhalation of large amounts of dust. Pneumoconiosis often does not have obvious symptoms and signs in the early stages，but as the condition progresses，the emergence of complications worsens the condition，seriously damaging the physical and mental health of patients and exacerbating their economic burden. The "Chinese Expert Consensus on the Treatment of Pneumoconiosis（2021 Edition）" points out that patients with pneumoconiosis generally face obstacles in terms of exercise ability，physical function，respiratory ability，as well as psychological and social adaptation ability during the continuous treatment process. By adopting appropriate rehabilitation intervention plans and integrating them into the daily life of patients，long-term adherence to implementation will effectively improve the quality of life of patients，enabling them to better return and adapt to society. At present，the main treatment methods for pulmonary rehabilitation in clinical practice include respiratory training，respiratory muscle training，traditional Chinese medicine rehabilitation，psychological intervention，exercise rehabilitation treatment，health education，etc. This article summarizes the research progress of the main rehabilitation strategies for pneumoconiosis and provides suggestions for future development.

As a part of healthy lifestyle，reasonable diet is an important measure for the prevention and treatment of nutrition-related chronic diseases. With increasing evidence supporting the role of nutrition and diet in the onset and progression of chronic disease，there has been a call for greater attention to nutritional literacy. However，there is no unified definition of nutrition literacy，and research on nutrition literacy assessment tools for patients with nutrition-related chronic diseases are still relatively limited. Therefore，this study aims to clarify the boundaries of different assessment tools by combing and summarizing domestic and foreign studies on the definition of nutritional literacy and nutritional literacy assessment tools for patients with nutrition-related chronic diseases，so as to provide reference and guidance for the formation of a clear and rigorous definition of nutritional literacy，the development of nutritional literacy assessment tools for patients with nutrition-related chronic diseases，and the corresponding clinical research.

This article introduces the selection principles，mechanisms of action，development trends，and application examples of isotope internal standards in biological sample detection. It elucidates the important role of this method in improving the sensitivity，accuracy，eliminating and reducing the loss of analyte and matrix interference caused by sample pretreatment. This article reviews the current application status of isotope dilution mass spectrometry in food safety，environmental health and biomedicine，and lists the detection examples of this method in different types of complex biological materials such as serum，whole blood and urine. It fully demonstrates the important role that this method will play in the detection of biomaterial chemicals in the future，providing data and technical support for the monitoring of human biological samples in China.