Gas separation through polyurethane–ZnO mixed matrix membranes and mathematical modeling of the interfacial morphology

SPE Polymers

article

Afsaneh Fakhar¹  Saeid Maghami¹  Elham Sameti¹  Monireh Shekari¹  Morteza Sadeghi¹ 

[1] Department of Chemical Engineering, Isfahan University of Technology

关键词: gas separation;    interfacial morphology;    membrane;    polyurethane;    ZnO nanocomposite;   

DOI  :  10.1002/pls2.10023

学科分类：社会科学、人文和艺术（综合）

来源: Wiley

【 摘 要 】

Background : Postpartum depression is one of the emotional disturbances that results from failure to postpartum psychological adaptation process. The global prevalence of postpartum depression is 10-15%. This study aimed to analyze the risk factors of pregnancy on the incidence of postpartum depression. Subje cts and Met hod: This was an analytic and observational study with a cross-sectional design. The study was conducted at Dr. Moewardi hospital, from December 2017 to January 2018. A total sample of 150 postpartum mothers was selected for this study by exhaustive sampling. The dependent variable was postpartum depression (PPD). The independent variables were maternal age, stress, parity, unwanted pregnancy, type of labor, family income, family support, and domestic violence. The data were collected by questionnaire and analyzed by path analysis model. Results : Postpartum depression was directly and positively affected by psychological stress (b= 2.15; 95% CI= 1.17 to 3.13; p<0.001), delivery type (b= 1.27; 95% CI= 0.32 to 2.21; p= 0.008), and unwanted pregnancy (b= 1.57; 95% CI= 0.57 to 2.58; p= 0.002). Postpartum depression was directly but negatively affected by family income (b= -1.52; 95% CI= -2.51 to -0.54; p= 0.002), parity (b= -1.24; 95% CI= -2.21 to -0.28; p= 0.011), and family support (b= -1.31; 95% CI= -3.28 to -0.24; p= 0.016). Psychological stress increased with domestic violence (b= 2.68; 95% CI= 0.64 to 4.73; p= 0.010) and decreased with maternal age (b= -0.91; 95% CI= -1.68 to -0.13; p= 0.022). Parity increased with maternal age (b= 1.66; 95% CI= 0.79 to 2.53; p<0.001). Domestic violence decreased with maternal age (b= -1.34; 95% CI= -2.85 to 0.16; p= 0.081). Conslusion : Psychological stress, delivery type, unwanted pregnancy, family income, parity, and family support, are direct risk factors for postpartum depression.

【 授权许可】

CC BY