فهرست مطالب

Journal of Health Reports and Technology
Volume:2 Issue: 1, Jul 2016

  • تاریخ انتشار: 1395/10/23
  • تعداد عناوین: 7
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  • Saeb Ahmadi*, Kamil Rozrokh Pages 1-5
    The main objective of this work was to determine the adequacy of Response Surface Methodology (RSM) in optimizing conditions for copper solubilization from a con-verter slag using sulfuric acid and to test the polynomial model associated with RSM. RSM was applied for optimization of the main factors, including initial pH, initial temperature, and pulp density. The maximum copper recovery was 100% under the optimal conditions of initial pH of 3, 1.4 g/100mL initial density, and 55°C. The con-firmation test showed that the model can predict conditions accurately.
    Keywords: Leaching, Converter slag, Response Surface Methodology, Optimization
  • Masoud Moradi, Meghdad Pirsahe, Touba Khosravi, Ali Azari, Kiomars Sharafi*, Hooshmand Sharafi Pages 6-14
    Nickel and chromium are toxic heavy metals that have serious adverse effects on human health and the environment. The removal efficiency of nickel and chromium from aqueous solution was evaluated using pumice powder as an adsorbent. After preparing pumice powder, batch experiments were performed at different times and adsorbent dosages (pH=7, heavy metals concentrations = 50 mg/L, and stirring/minute= 200rpm). Obtained products were adsorbed using Langmuir and Freundlich isotherms, pseudo-first order and second-order models, intra-particle diffusion, and Elovich kinetics. Results indicate that nickel adsorbs more than chromium and adsorption of both nickel and chromium follows the Freundlich model. Correlation coefficients obtained from Freundlich model and pseudo-second order kinetic are R2=0.995, R2=0.996 and R2=0.999, respectively, which shows that the Freundlich expression and the kinetics of pseudo second order provided a better fit to the experimental data of pumice powder. Also, the removal efficiency was increased significantly by increasing the adsorbent dose and contact time (R2
    Keywords: Adsorbent, Chromium, Nickel Pumice Powder, Removal
  • Hossein Ashtarian, Masoud Ghanbari*, Ashrafbanoo Moradi, Leila Baigi Pages 15-20
    Self-efficacy is an inflectional factor in pregnancy, and high self-efficacy can prevent many pregnancy-related health hazards. The present study was an attempt to determine the self-efficacy levels in pregnant women and examine the factors related to self-efficacy in pregnant women who were referred to the health centers in Delfan. The current study is a cross-sectional study carried out on 100 pregnant women in Delfan in 2016, using a multistage sampling procedure. Questionnaires were used to collect demographic and self efficacy related information. To analyze the collected data, SPSS software version 18, T test, one- way ANOVA, and Spearman’s correlation were employed. The mean age and self-efficacy score in the participants were estimated to be 26.48 ± 6.08 years and48.12 ± 7.70 (range 17–68), respectively. A stastically significant relationship was found between self-efficacy in pregnant women and the variables of age (p = 0.04), educational level (p = 0.02), economic status (p = 0.01), and educational level of the husband (p = 0.04). In the multi-variable regression analysis of self-efficacy, the variables of age (B = −2.24, p = 0.01), number of children (B = 0.95, p = 0.03), educational level (B = 2.03, p = 0.02), employment (B = 2.08, p = 0.01), and economic status (B = 2.70, p = 0.01) were significant. Considering various self-efficacy related factors in pregnant women, and the cumulative effects of these factors on self-efficacy, it can be concluded that improving modifiable influential factors, including economic status, educational level, and employment, can have a direct impact on the self-efficacy of pregnant women.
    Keywords: Pregnant women, Self-efficacy, Delfan
  • Mohammad Hosein Baghianimoghadam, Nooshin Rouhani Tonkaboni, Mahdi Haghi, Malek Naz Baghianimoghadam, Nahid Ardian* Pages 21-26
    Low physical activity and poor diet among teenagers is increasing. These unhealthy behaviors are related to increases in overweight in adolescence with type II diabetes, hypertension, and heart disease. Frequent consumption of fast food with high energy consumption is associated with low intake of saturated fat, sodium, and low intake of nutrients. The aim of this study was to determine the predictive factors of consumption of fast food in female high school students of Yazd city based on the theory of planned behavior. This was a descriptive and analytic study that was done on 186 female students in Yazd city of Iran in 2014. The variables under study were demographic variables behavior of fast food consumption and structures of theory of planned behavior, including attitudes, subjective norms, perceived behavioral control and also variables of intention and. Data collected was analyzed using SPSS 16 using descriptive and analytical statistics. Fast food consumption of students was influenced by children’s parents. Results of the present study showed that structures of attitudes, subjective norms and perceived behavioral control predicted 20.1% of variance intention All variables of theory predicted 15.8% of the variance of behavior of eating of fast food. The findings of this study show that the theory of planned behavior is useful for predicting the intention of fast food consumption.
    Keywords: Fast food, High school students, Theory of planned behavior, Predictive factors
  • Abdollah Dargahi, Mitra Mohammadi, Ali Almasi*, Ali Azizi Pages 27-31
    Phenol is toxic, carcinogenic, and carcinogenic, and a teratogenic. Therefore, removephenol from oil refinery wastewater before it is discharged. The main objective of the present investigation was to evaluate the effect of temperature and phenol concentration on anaerobic waste stabilization pond (WSP) efficiency for the treatment of oil refinery wastewater. In this study, phenol concentrations of 100, 200, 300, and 400 mg/L and a temperature range of 10°C–13°C were surveyed. Parameters such as phenol, COD, and BOD pH were investigated. Out of these parameters, phenol concentration and temperature were found to affect WSP efficiency. The efficiency of the anaerobic WSP increased when the phenol concentration decreased. Results also showed that the efficiency of the anaerobic WSP in low temperatures decreased. Hence, the efficiency of anaerobic ponds for the the removal of phenol from oil refinery wastewater is improved when temperatures are high and phenol concentrations are low.
    Keywords: Phenol, Stabilization Pond, Oil Refinery
  • Yahya Pasdar, Gholamreza Bahrami, Shokoufeh Alghasi, Mitra Darbandi, Abbas Hemati Azandaryani, Soheila Bahrami, Puneh Rahemi, Elham Mirtaheri Pages 32-41
    Effects of dietary fatty acids on health status depend on types and amounts of consumed fatty acids. Trans fatty acid intake is directly associated with increased risk of coronary heart disease. This study was aimed to determine the amount of fatty acids in some consumed snacks and dairy products in Kermanshah, I. R. Iran. 19 different types of foods including cakes, sweets, and dairy products were randomly purchased from all five regions of Kermanshah city. The fatty acids were extracted using the Folch method and then were analyzed using gas chromatography. The results showed that snacks, coffee mate, biscuits and cakes contained the highest levels of trans fatty acids, ranging from 6.95 % to 13.94 %. Among dairy products, trans fatty acid content of ice cream samples was remarkable. The highest levels of saturated fatty acids were observed in coffee mate, chocolate, and subsidized milk. The lowest short-chain fatty acid contents were found in ice cream and yogurt respectively. In conclusion, the results of the present study revealed that dietary trans fatty acid levels are relatively high in foods, which could be due to the hydrogenated oils used in food preparation.
    Keywords: Trans fatty acids, TFA, Dairy products, Folch method, Snacks, GC
  • Hooshyar Hossini, Abbas Rezaee, Meghdad Pirsaheb, Marius Sebastian Secula, Yahya Pasdar, Hiwa Hossaini* Pages 42-44