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ELECTROCHEMICAL Co 3 O 4 NANOPOROUS THIN FILMS SENSOR FOR HYDROGEN PEROXIDE DETECTION
GUANG SHENG CAO,RUILIN WANG,PEILONG WANG,XIN LI,YUE WANG,JUNPING LI,GUILONG WANG 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.4
The nanoporous Co 3 O 4 thin ¯lms were prepared on indium tin oxide (ITO) glasses by anelectrodeposition method. The surface morphology and composition of the nanoporous Co 3 O 4¯lms were characterized by scanning electron microscopy (SEM), energy-dispersive X-rayanalysis (EDS) and X-ray photoelectron spectroscopy (XPS). The results show that the as-deposited nanoporous Co 3 O 4 ¯lm is constructed by many interconnected nano°akes withthickness of about 40 nm. The cyclic voltammetry (CV) measurement indicates that thenanoporous Co 3 O 4 ¯lms exhibit remarkable electrocatalytic activities for the hydrogen peroxide(H 2 O 2 ) reduction which shows that it is a good candidate to be employed as electrode materialsfor electrochemical sensing of H 2 O 2 . Further analysis indicated that the detection sensitivityof the sensor was 1.357 mA mM? 1 cm? 2 and the detection limit was estimated to be about0.2 mM.
Han Zhang,Qi Zhang,Tingting Gao,Yixi Kong,Zeying Qin,Yueyang Hu,Ruilin Cao,Songli Mei 대한신경정신의학회 2019 PSYCHIATRY INVESTIGATION Vol.16 No.5
Objective: This study aims to examine the parallel multiple mediators of depressive symptoms and sleep quality in the relations between stress and physical health-related quality of life (PHQOL)/mental health-related quality of life (MHQOL) among the women in late pregnancy. Methods: Of 1120 pregnant women participated in the cross-sectional study which consisted of Perceived Stress Scale, Edinburgh Postnatal Depression Scale, Pittsburgh Sleep Quality Index and MOS 12-item Short Form Health Survey. Parallel multiple mediator models were used to analyze the relations between stress, depressive symptoms, sleep quality and PHQOL/MHQOL. Results: The effect of perceived stress on PHQOL was partially through the indirect path of sleep quality (β=-0.061). But in the model for MHQOL, depressive symptoms and sleep quality played parallel mediators, and the indirect path effect of depressive symptoms (β=-0.179) was higher than sleep quality (β=-0.029). Conclusion: The findings contributed to the understanding about the influential mechanism of stress on PHQOL/MHQOL. And it reminded the importance of sleep quality and depressive symptoms for improving QOL in late pregnancy.