Content analysis of secondary school chemistry textbooks based on components of resistance economy: Shannon Entropy Methodod

Background and Objectives:The present study aims to analyze the content of second grade chemistry textbooks based on the emphasis on the goals of resistance economy. Methods: The research method in this study was descriptive content analysis. In this study, after collecting quantitative data, Shannon entropy technique was used for anarysis. The statistical population of this study formed the content of all secondary high school chemistry textbooks. The sampling method in this study was census; Therefore, all second grade chemistry textbooks were analyzed. The registration unit in this study was the subject. In this study, the frequency of components and themes of resistance economy in chemistry curricula were examined. Findings: The findings of the content analysis showed that in secondary high school chemistry books, the most attention was paid to the goals of resistance economy in the field of consumption the field of skills and the field of production attitude. Conclusion: From the present study, it can be concluded that in the second grade chemistry textbooks, very little attention has been paid to the goals of the resistance economy. Also, in secondary school chemistry curricula, little attention has been paid to the goals and components of the resistance economy and the amount of attention to the goals of the resistance economy do not have a normal distribution and only some components of the resistance economy in the second secondary school (three dimensions and three areas) are consi dered

Trout farms and other human activities effects on Cheshmehkileh river ecosystem in Tonekabon

Cheshmehkileh River and adjacent mountainous streams, play a strategic role as a historical axis for anthropogenic civilization, human welfare also habitat and migration pathway of commercial – biologic valuable fishes e.g. Caspian trout, Caspian kuttum, members of Cyprinidae family in south Caspian Sea drainage. Treats such as overfishing of Caspian trout and Red spotted trout stocks in mountainous headwaters, barriers construction and manipulations those are out of river carrying capacity developed by human activities, affected normal function of river as well. Sand mining big factories establishment next to the river, legal and illegal trade of river sediments, direct entry of Tonekabon landfill leakage into the river, development of Rainbow trout farms since 3 decades and huge effluents into the river containing dead fish and types of solids, escapement of cultured Rainbow trouts into the river, … are major minimum factors which needs basic information for integrating inclusively drainage management system. Cheshmehkileh River contains Headwaters of Dohezar (Daryasar & Nusha), Sehezar and Valamroud rivers during 13 monthly sampling phases between September 2009 and October 2010 based on macrozoobenthoses investigations by EPT, EPT/C EPA protocols, measurements of nominated physic-chemical and microbiologic parameters. Probability of Rainbow trouts escapement and invasion, existence, nutrition in Cheshmehkileh environment indeed investigated. Data analysis explained significant differences (P<0.05) between groups of measured parameters in different sampling stations. Dendogram of clustered analysis based on consolidation of major biologic/ physic-chemical and microbiologic parameters, separated stations No. 1, 3, 2, 4 in one group and remained classified in different groups. Station 8 and 9 similarly separated which expressed general similarities according to Sehezar river environment which were differs in comparison with other stations. Station 11 separated according to its natural quality of water and environment. Similarities between station 10 to Sehezar river stations 8 and 9 expressed general influence of Sehezar River more than Dohezar River in Cheshmehkileh condition especially in station No. 10. High scores of EPT and EPT/C indices in upstream stations 1, 3 and 8 also low score of indices in stations 7, 13 and 6 expressed levels of environment quality between these groups of stations. Maximum average biomass of macroinvertebrates belongs to Trichoptera order in Cheshmehkileh River. Significant decrease of biomass in stations 11, 12 and 13 in comparison with other stations stated environment degradation in mentioned stations relevant to excessive sand mining as well. Pollution resistant groups of invertebrates significantly increased in downstreams against upstream stations. Also disappearing of Plecoptera order in station No. 7, 9, 10 and 13 stated low quality of environment in comparison with upstream stations. Confirmation of effects quality and quantity for point and non-point sources of imported pollutants require specific management considerations in order to present exploitations, pollutants control and emergencies for river monitoring in forthcoming years

Improvement of Fracture Network Modeling in Fractured Reservoirs Using Conditioning and Geostatistical Method

The fracture network in hydrocarbon reservoirs plays a major role in reservoir fluid transfer to production wells. Modeling of fracture in fractured reservoir is often done randomly. Modelling is based on image logs and core information. Because the information is available in a small number of wells, the model is not reliable and this problem makes it impossible to predict the correct flow rate and the amount of wells produced. In this study, an algorithm based on primary and secondary data for fracture network modelling in one of the southwest fields of Iran has been presented. The initial data include aperture fracture and fracture density, and secondary data includes petrophysical data, i.e. electrical resistance and resistance logs used to scale-up characteristics of fracture in wells. In this study, we tried to increase the accuracy of modelling by using modelling conditionality on existing and constructed data. Gaussian conditional simulation produces a set of realizations on which non-linear statistics can be readily available. In this way, information was entered into the model in areas where fracture was predicted to exist. Using the turning bands co-simulation method in geostatistic, the fracture characteristics were simulated in wells that were not available. Using the results of the 3D model, the fracture of the reservoir was re-constructed. The results showed that the modelling performed in this study has been able to increase the fracture prediction accuracy and their properties in fracture density by about 9% and in the fracture opening by about 5%

Domestic Violence Among Iranian Women: A Systematic Review and Meta-Analysis

Context: Violence against women, or domestic violence, is both a physical and mental health issue that is rampant in many societies. It undermines the personal health of those involved by inflicting physical, sexual, and psychological damage. The purpose of the present systematic review and meta-analysis is to assess the prevalence of domestic violence in Iranian society. Evidence Acquisition: A total of 31 articles published between 2000 and 2014 in Iranian and international databases (MagIran, IranMedex, SID, Google Scholar, Science Direct, PubMed, Pre Quest, and Scopus) were examined. The data collected from the articles were analyzed through a meta-analysis using a random effects model. The heterogeneity of the articles was examined using the I2 index, and the analyses were performed with STATA software version 11.2. Results: Based on the 31 articles, which represent a sample size of 15,514 persons, we estimated the prevalence of domestic violence to be 66 (CI 95: 55-77). The geographical classification showed that the prevalence of domestic violence was 70 (CI 95: 57-84) in the east of the country, 70 in the south (CI 95: 32-100), 75 in the west (CI 95: 56-94), 62 in the north (CI 95: 37-86), and 59 in the center (CI 95: 44-74). Conclusions: The results of the study showed a high prevalence of domestic violence in Iran, which requires the adoption of appropriate measures and the initiation of effective interventions by the legal authorities. These measures and interventions should aim to determine the causes of domestic violence and to develop ways of controlling and reducing this destructive phenomenon

8-hydroxy-2’-deoxyguanosin in peripheral leukocyte associated with HBsAg in patients with chronic hepatitis B

Background: Chronic hepatitis B (CHB), with accumulation of Hepatitis B surface Antigen (HBsAg) in hepatocytes, linked to the immune-mediated hepatic inflammation and induction of oxidative stress. 8-Hydroxyl-2’-deoxyguanosine (8-OHdG) is a useful biomarker for measuring the adverse effects of exogenous infectious agents in oxidative damage to DNA. Objectives: The current study aimed at investigating the possible oxidative adverse effects of HBsAg and systemic DNA damage in patients with CHB, and supporting the host-viral interaction in immune-mediated inflammatory. Methods: Thirty patients with CHB who had undergone liver biopsies for therapeutic purposes and 30 matched controls from a healthy population were randomly selected in the present study for assessment of 8-OHdG levels in peripheral blood leukocytes DNA by 32P-postlabeling analysis. Expression of HBsAg in hepatocytes was evaluated immunohistochemically in liver biopsies of patients with CHB. The effect of 8-OHdG and 95% confidence interval (CI), adjusted by relevant confounders, were assessed on hepatitis B virus (HBV) infection. Results: Experimental investigation showed increased levels of DNA adduct 8-OHdG compared with healthy individuals (mean ± standard deviation, 1456±1275 vs. 402±271; P < 0.001). The logistic regression with continuous and dichotomous models revealed the strong impact of 8-OHdG on CHB infection (OR = 1.20; 95%CI: 1.01 -1.44, P = 0.043) and (OR = 7.18; 95%CI: 1.32 -39.02, P = 0.022). HBV DNA and hepatic expression of HBsAg had a borderline association with DNA adduct 8-OHdG (r = 0.35, P = 0.054 and r = 0.36, P = 0.05). Conclusions: The current study showed that the adduct of 8-OHdG in peripheral blood cells DNA increased in patients with CHB compared with healthy carriers and the pathophysiologic role of HBsAg in oxidative stress in patients with CHB. Nonetheless, the lack of efficient DNA repair enzymes activity as well as a proper diet with antioxidant agents in CHB need to be clarified in future studies. © 2017, Ahvaz Jundishapur University of Medical Sciences

Association of socio-economic status with injuries in children andadolescents: The CASPIAN-IV study

Background:Childhood and adolescence injuries are still frequently occuring in developing countries. This study aims to assess the association of socio-economic status (SES) with injuriesin Iranian children and adolescents. Materials and Methods: This multicentricsurvey was part of a national surveillance program, which was conducted in 2011-2012 amongst 14,880 students aged6-18 years. Participants were randomly selected from urban and rural areas of 30 provinces in Iran. Socio- economic status (SES) of participants was categorized to "low", "middle", and "high" by using principle component analysis method by considering parental job and education as well as family assets. Prevalence, types and places of injuries were based on the questionnaire of the World Health Organization- Global School-based student Health Survey (WHO-GSHS).Multivariate modelwas used for comparison of variables between SES groups. Results: Overall, 13486 out of 14880 invited students (response rate: 90.6) participated in this study.Their mean (SD) age was12.47 (3.36) years.Boys and urban residents constituted the majority of participants (50.8 and 75.6, respectively). Compared with low SES group, odds of sport injury was higher in students with middle (OR=1.44; 95CI: 0.92-2.26) and highSES (OR=1.96; 95CI: 1.27-3.01). Compared to participants withlow SES,odds of home injuries was significantly lower in high SES group (OR=0.78; 95CI: 0.64-0.95). Conclusion: This study revealedconsiderable differences in injuries of children and adolescents according to their SES, with higher prevalence of home injuries in low SES families and higher prevalence of sport injuries in middle and high SES levels. When implementing injury prevention programs, such differences should be taken into account

Association of socio-economic status with injuries in children andadolescents: The CASPIAN-IV study

Background:Childhood and adolescence injuries are still frequently occuring in developing countries. This study aims to assess the association of socio-economic status (SES) with injuriesin Iranian children and adolescents. Materials and Methods: This multicentricsurvey was part of a national surveillance program, which was conducted in 2011-2012 amongst 14,880 students aged6-18 years. Participants were randomly selected from urban and rural areas of 30 provinces in Iran. Socio- economic status (SES) of participants was categorized to "low", "middle", and "high" by using principle component analysis method by considering parental job and education as well as family assets. Prevalence, types and places of injuries were based on the questionnaire of the World Health Organization- Global School-based student Health Survey (WHO-GSHS).Multivariate modelwas used for comparison of variables between SES groups. Results: Overall, 13486 out of 14880 invited students (response rate: 90.6) participated in this study.Their mean (SD) age was12.47 (3.36) years.Boys and urban residents constituted the majority of participants (50.8 and 75.6, respectively). Compared with low SES group, odds of sport injury was higher in students with middle (OR=1.44; 95CI: 0.92-2.26) and highSES (OR=1.96; 95CI: 1.27-3.01). Compared to participants withlow SES,odds of home injuries was significantly lower in high SES group (OR=0.78; 95CI: 0.64-0.95). Conclusion: This study revealedconsiderable differences in injuries of children and adolescents according to their SES, with higher prevalence of home injuries in low SES families and higher prevalence of sport injuries in middle and high SES levels. When implementing injury prevention programs, such differences should be taken into account