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In order to clarify questions raised from a recent study on the polymer/cerium (IV) oxide (CeO2) system, polystyrene/CeO2 was prepared by melt blending, which produces only microscale dispersed CeO2. The incorporation of CeO2 moderately enhances the thermal stability of the composites. Because of the limited surface area of microscale CeO2 particles compared with nanoscale particles, the microscale dispersed CeO2 induces negligible peak heat release rate reduction in cone calorimetry. Combination of CeO2 with organoclay does not show any advantages with either microdispersion of nanodispersion of CeO2 in polystyrene and polymethylmethacrylate matrices. In summary, the nanodispersion (i.e. surface area) of CeO2 particles is a critical factor in fire retardancy of the composites. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Objective: To investigate the effects of intrauterine perfusion with granulocyte colony-stimulating factor (G-CSF) on the endometrial thickness, volume, and blood flow parameters of patients with thin endometrium and their clinical outcomes., Methods: We designed a prospective non-randomized synchronous controlled trial and recruited patients with thin endometrium who underwent frozen-thawed embryo transfer (FET) at Mianyang Central Hospital between September 1, 2021 and September 1, 2023. They were divided into two groups, an experimental group of patients who received the experimental treatment of intrauterine perfusion with G-CSF and a control group of patients who did not receive the experimental treatment. The general data and the clinical outcomes of the two groups were analyzed and compared. The endometrial thickness, volume and blood flow parameters of patients in the experimental group before and after intrauterine perfusion with G-CSF were analyzed., Results: The clinical data of 83 patients were included in the study. The experimental group included 51 cases, while the control group included 31 cases. There were no significant differences in the baseline data between the two groups. The clinical pregnancy rate of the experimental group (56.86%) was higher than that of the control group (50.00%) and the rate of spontaneous abortion in the experimental group (27.59%) was lower than that in the control group (37.50%), but the differences were not statistically significant ( P >0.05). In the experimental group, the postperfusion endometrial thickness ([0.67±0.1] cm) was greater than the preperfusion endometrial thickness ([0.59±0.09] cm), the postperfusion ([1.84±0.81] cm 3 ) was greater than the preperfusion endometrial volume ([1.54±0.69] cm 3 ), and the postperfusion vascularization flow index (VFI) (1.97±2.82) was greater than the preperfusion VFI (0.99±1.04), with all the differences being statistically significant ( P <0.05)., Conclusion: Intrauterine perfusion with G-CSF can enhance the endometrial thickness, volume, and some blood flow parameters in patients with thin endometrium., Competing Interests: 利益冲突　所有作者均声明不存在利益冲突, (© 2024《四川大学学报（医学版）》编辑部 版权所有Copyright ©2024 Editorial Office of Journal of Sichuan University (Medical Sciences).)

Objective: To investigate the status of subjective well-being (SWB) for medical staffs who contact with patients directly in a tertiary hospital.
, Methods: Staffs from a tertiary hospital in Hunan province were investigated the SWB Scale (SWBS-cc20) from 2012 to 2014.
, Results: The scores of SWB for medical staffs are high (81.67±12.33). Among the 10 sub-dimensions of SWB, medical staffs performed the best in family atmosphere, personal growth, and interpersonal adaptation, while performed the worst in physical health, mental health and material contentment. Title, job nature, education and occupation significantly affected the status of SWB. Staffs who directly connected with patients have less scores of SWB than those who do not (t=-4.80, P<0.001). Moreover, they perform better in contentment (OR=0.079, 95% CI 1.278 to 2.214, P<0.001), but worse in mental health (OR=1.315, 95% CI 1.023 to 1.690, P<0.05) and physical health (OR=1.313, 95% CI 1.029 to 1.677, P<0.05).
, Conclusion: Medical staffs have high scores of SWB. Staffs who directly connected with patients have less scores of SWB than those who do not. Moreover, they perform better in contentment, but worse in mental health and physical health.