Relationship between occupational stress and sleep quality among locomotive engineers: Mediating role of response strategy and moderating role of overcommitment / 环境与职业医学

Background The occurrences of occupational stress and sleep disorders are closely related. As a high-risk group of occupational stress, the sleep quality of locomotive engineers is of great significance for road traffic safety. Objective To explore the direction and degree of occupational stress affecting the sleep quality among locomotive engineers, and to analyze potential mediating and moderating roles of response strategy and overcommitment in the relationship. Methods From July 1st to July 31st, 2022, a total of 6219 locomotive engineers from three locomotive depots of China Railway Lanzhou Group Corporation were selected. We conducted an online survey on occupational stress, overcommitment, response strategy and sleep quality using the Effort-Reward Imbalance, Personal Resources Questionnaire, and Pittsburgh Sleep Quality Index. Single factor analysis and correlation analysis were conducted using SPSS 25.0 software, mediation and moderation models were constructed using the Process V3.3 macro program plugin, and Harman's single factor test was used for common method bias testing. Results A total of 6219 questionnaires were distributed, and 5738 valid questionnaires were collected, with an effective response rate of 92.27%. The average locomotive engineers' occupational stress score (1.22±0.29), overcommitment score (16.38±3.55), response strategy score (50.00±10.00), and sleep quality score (11.51±3.95) were calculated. The Pearson correlation analysis results showed that occupational stress was positively correlated with overcommitment and sleep quality (r=0.435, 0.321, P<0.01), and negatively correlated with response strategy (r=−0.286, P<0.01); overcommitment was positively correlated with sleep quality (r=0.367, P<0.01), and negatively correlated with response strategy (r=−0.210, P<0.01); there was a negative correlation between response strategy and sleep quality (r=−0.244, P<0.01). Occupational stress positively associated with sleep quality in locomotive engineers (b=3.658, t=21.177, P<0.001); response strategy exhibited a partial mediating role between occupational stress and sleep quality, with an effect size of 0.581, accounting for 15.88% of the total effect; overcommitment presented a significant moderating effect in the first half of the mediating process of "occupational stress-response strategy-sleep quality" (P<0.001). Conclusion Occupational stress has an impact on the sleep quality of locomotive engineers through the mediating effect of response strategy, and the first half of this mediating pathway is moderated by overcommitment.

Construction and discussion of sensitive quality index of blood purification nursing / 中国实用护理杂志

Objective To establish a sensitive quality index system for blood purification nursing, providing reference for the evaluation and monitoring of nursing safety quality in the blood purification room, and providing quality control targets and basis for nursing managers. Methods Set up a research team to analyze the patient data, nursing bad events, draw on the data of the National Nursing Quality Control Center and other research results of nursing experts at home and abroad. The research team conducted analysis and discussion, expert meeting consultation(discussed by professional nursing experts in Beijing and Inner Mongolia), expert letters, screening and final determination of nursing sensitive quality indicators. Results Finally, a set of 13 sensitive quality indicators for specialized care for blood purification was constructed, including 3 structural indicators, 10 outcome indicators and 100 % effective recovery rates for the two rounds of expert questionnaires. The indicators for consultation are 0.12-0 .17 and 0.10-0 .14, respectively, and the expert authoritative coefficients are 0.786 and 0.807, respectively, which are statistically significant (P<0.01). Conclusion The system of sensitive quality index of blood purification nursing is in conformity with the principles of science, reliability and practicality, and can be used as a tool for evaluating the quality of blood purification room nursing safety.

Construction and discussion of sensitive quality index of blood purification nursing / 中国实用护理杂志

Objective@#To establish a sensitive quality index system for blood purification nursing, providing reference for the evaluation and monitoring of nursing safety quality in the blood purification room, and providing quality control targets and basis for nursing managers.@*Methods@#Set up a research team to analyze the patient data, nursing bad events, draw on the data of the National Nursing Quality Control Center and other research results of nursing experts at home and abroad. The research team conducted analysis and discussion, expert meeting consultation(discussed by professional nursing experts in Beijing and Inner Mongolia), expert letters, screening and final determination of nursing sensitive quality indicators.@*Results@#Finally, a set of 13 sensitive quality indicators for specialized care for blood purification was constructed, including 3 structural indicators, 10 outcome indicators and 100% effective recovery rates for the two rounds of expert questionnaires. The indicators for consultation are 0.12-0.17 and 0.10-0.14, respectively, and the expert authoritative coefficients are 0.786 and 0.807, respectively, which are statistically significant (P< 0.01).@*Conclusion@#The system of sensitive quality index of blood purification nursing is in conformity with the principles of science, reliability and practicality, and can be used as a tool for evaluating the quality of blood purification room nursing safety.

Clinicopathologic features observation of ovarian transitional cell tumors / 中华病理学杂志

<p><b>OBJECTIVE</b>To assess clinical and pathological features of ovarian transitional cell tumors.</p><p><b>METHODS</b>Fourteen cases of ovarian transitional cell carcinoma (TCC) were selected and investigated for their clinical and pathological features. Their immunohistochemical profiles were compared with 12 cases of serous adenocarcinoma (SC) admixed with TCC and 4 cases of EC admixed with TCC 20 cases of pure high-grade serous adenocarcinoma (HG-SC), 15 cases of endometrioid adenocarcinoma (EC), 6 cases of Brenner tumor (BT, 2 cases of malignant BT and 4 cases of benign BT).</p><p><b>RESULTS</b>The patients' age ranged from 36-63 years (mean, 56 years). All cases underwent surgery and postoperative chemotherapy with TP or CAP program. Clinical follow-up was available in 9 cases, of which 2 patients died. Histologically, all cases showed features of transitional cell carcinoma without BT component. Immunohistochemically, 13 of 14 TCCs were positive for WT-1 and all were positive for CK7, ER, PR and CA125, but negative for Uroplakin III and CK20.Similar immunohistochemical staining patterns were seen in SC admixed with TCC and pure HG-SC. Percentage of the 14 TCC cases were also diffusely positive for BRCA1. All SCs admixed with TCC and pure HG-SCs were diffusely or heterogeneously positive for WT-1, with a sharp contrast and mottled distribution pattern in the heterogeneous cases. All TCCs were diffusely and strongly positive for p53, while 16 of 20 cases of pure HG-SC were positive. The positive ratio of p53 in SCs admixed with TCC cases was 11/12.WT-1 expression in TCCs was significantly higher than BTs, ECs and ECs admixed with TCC (P < 0.01), while no obvious difference was seen when compared with SCs admixed with TCC and pure HG-SCs.SCs admixed with TCC, TCCs and EC were positive for BRCA1 except pure ECs and BTs. The positive rate of Ki-67 of BTs was low, while it was higher in TCCs, SCs admixed with TCC and pure HG-SCs. Only BTs expressed Uroplakin III.</p><p><b>CONCLUSIONS</b>Ovarian TCC has characteristic morphological and immunohistochemical features, similar to SC but different from BT. Therefore, TCC should be considered as a morphological variant of HG-SC.</p>

The comparison of the extraction of beta wave from EEG between FFT and wavelet transform / 生物医学工程学杂志

In order to choose a fast and efficient real-time method in beta wave information extraction, we compared the result and the efficiency of the information separation of both fast Fourier transform (FFT) and wavelet transform of EEG beta band in the present paper. Our work provides the basis for the EEG data come from the real-time health assessment of 3DTV. We took the EEGs of 5 healthy volunteers before, after and during the process of watching 3DTV and meanwhile recorded the results. The trends of the relative energy and the time cost of two methods were compared by using both the FFT and wavelet packet transform (WPT) which was to extract the feature of EEG beta wave. It demonstrated that (1) Results of the two methods were consistent in the trends of watching 3DTV; (2) Results of the differences in two methods were consistent before and after watching 3DTV; (3) FFT took less time than the wavelet transform in the same case. It is concluded that the results of both FFT and Wavelet transform are consistent in feature extraction of EEG, and a fast method to work with the large quantities of EEG data obtained in the experiments can be offered in the future.