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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Particle Science & Technology
- نوع مقاله: Journal Article
- کلمات کلیدی: Electrophoretic deposition,Aluminum coating,AZ91D magnesium alloy,Coating morphology,Suspension stability
- چکیده:
- چکیده انگلیسی: Aluminum coating was prepared on AZ91D magnesium alloy substrate using the electrophoretic deposition (EPD) method in absolute ethanol solvent. In order to determine the optimal concentration of AlCl3.6H2O additive, the zeta potential and size of particles in the suspension were measured in the presence of different concentrations of AlCl3.6H2O. The results showed that an appropriate coating is obtainable in the presence of 0.6 mM AlCl3.6H2O as an additive. The effects of applied voltage, deposition time, and additive concentration on deposition weight, deposition thickness, and coating morphology were also studied. A uniform coating with smaller pores and higher density was obtained at the additive concentration of 0.6 mM, deposition time of 18 min, and applied voltage of 70 V. The thickness of this coating was measured at about 256.91 µm. According to the results of corrosion behavior studies, the corrosion current density was measured at 29.16 and 12.85 µA/cm2 for uncoated and aluminum-coated AZ91D alloy, respectively.
- انتشار مقاله: 26-09-1396
- نویسندگان: Hossein Aghajani,Maryam Pouzesh
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Social Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: participation,Mass Media,religiosity,group bonds,social alienation
- چکیده:
- چکیده انگلیسی: This study aims to have a sociological explanation of the different forms of participation among Khalkhal citizens and the factors affecting it. In this study, the important issue is attention to dimensions of participation. The theoretical framework and model were presented by using the theory of Talcott Parsons, Lipset, Habermas, De Tocqueville, Lerner, and Rostow. This research was a survey and the structural validity and reliability were tested through Cronbach's alpha coefficient. The statistical population consisted of over 18 year old citizens of Khalkhal who were 36,000 according to the Census Bureau. Through a multi-stage cluster sampling method, 380 people were selected as a sample. To analyze the data, two methods of descriptive and inferential statistics and SPSS and Amos graphics softwares were used. After preparing the matrix, onedimensional and two-dimensional information tables were set. This study aims to explain the different kinds of participation (social, cultural, psychological, economical and political) among the Khalkhal adult population. The results indicate that the independent variables of group bonds, social alienation, mass media and socioeconomic status had significant relationship with participation as the dependent variable. Also, the results of Structural Equation Model show that all model fitness indices were over 0.90. It means that, based on the defined measures, the model has moved away from the dependent model and become closer to a saturated model. Since that AGFI=0.904, TLI=0.911 and IFI =0.915 are close to one, it shows the fitness of the model and RMSEA=0.078 shows the weak performance of the residuals in the model.
- انتشار مقاله: 07-12-1395
- نویسندگان: Eghbaleh Aziz Khani,Alireza Mohseni Tabrizi,Hossein Aghajani
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Social Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Social Capital,economic capital,cultural capital,Active aging,Esfahan city
- چکیده:
- چکیده انگلیسی: This article is aimed to explain sociologically active aging with emphasizing the social capital in Esfahan. The present research is a survey and in terms of purpose is a practical type of cross-sectional study. The population is all elderly over 60 years in Esfahan in 2015. The sample size is selected by using Cochran Formula to 384 subjects and a quota sampling method is done by focusing the gender, residential area and livelihood status. A searched-made questionnaire is used to collect data and the face validity and construct validity are applied to validate validity and the reliability is determined by Cronbach's alpha. In order to analyze the data, the descriptive and inferential statistics are used by utilizing SPSS and Amos Graphics Software. Results of research show indicate that there is a statistical meaningful relationship between social, economic, cultural capital and active aging. Also the results of structural equation modeling indicate that most comparative indices of model are higher than 0.90, i.e. the model is going away from an independence and approaching to a saturated model based on the defined criteria for them. Therefore, basic attention to increase the social capital in society is essential, especially among the elderly to achieve active aging along with maximizing the health, safety and participation of elderly.
- انتشار مقاله: 04-10-1395
- نویسندگان: Batool Aminjafari,Hossein Aghajani,Ali Hashemianfar
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Advanced Biological and Biomedical Research
- نوع مقاله: Journal Article
- کلمات کلیدی: concentration,Heavy metal,Landfill,Wells
- چکیده:
- چکیده انگلیسی: This study at first level focused on definitions and descriptions of some landfills and landfills sites all around the world and survey on how important they are for regional governments and responsible in duty as a very important responsibility for locals and their health. At the second level we had a look on heavy metals concentration which are by many definitions as follows: lead, nickel, chromium, copper and cadmium, of course it should be mentioned that this study has been done only by archive and library studies. At the third level we go to compare the heavy metal concentration in mashhad landfill site with others mentioned in this paper as examples, of course we have had lots of limitation in this study, this is only start point. The results showed that indeed there are not many differences between mashhad and others as a whole.
- انتشار مقاله: 09-05-1393
- نویسندگان: Hossein Aghajani,Hossein Aghajani,Hossein Aghajani
- مشاهده
- جایگاه : پژوهشی
- مجله: Asia Pacific Journal of Medical Toxicology
- نوع مقاله: Journal Article
- کلمات کلیدی: Iran,Poisoning,Spatial analysis,Spatial Autocorrelation
- چکیده:
- چکیده انگلیسی: Background: Geospatial distribution analysis is a highly useful tool, especially in the field of health research and health economics. We aimed to study the geospatial distribution of poisoned patients and the risk factors in Mashhad, Iran.
Methods: This was a retrospective cross-sectional study of patients treated at the Medical Toxicology Center, Imam Reza Hospital, Mashhad, Iran, which is the only referral center in northeast of Iran, in 2013. Negative binomial and Poisson approach via generalized linear mixed models were performed to investigate the association between socio-demographic characteristics with the number of reported cases of poisoning.
Results: A total of 5064 poisoned patients (52% females) were included. Most of the poisoned patients were within the age group of 20-29 years old (41.4%). Pharmaceutical agents were the most common cause of poisonings (64.6%). The local test of spatial autocorrelation (Moran’s I) confirms that the poisoning had cluster pattern in Mashhad. Number of poisoning events were found to be associated with population density (RR= 1.00011; 95% CI 1.0001-1.00013), and the frequency of people with less than high school education (RR=1.49; 95% CI 1.32-1.68).
Conclusion: The geospatial factors may have impact on the number of acute poisoning events in a city. Some parts of a city may exhibit spatial clustering in poisoning events. Once clusters are found, interventions can be focused to specific geographic locations and would be helpful for healthcare policymakers to focus on prevention programs.- انتشار مقاله: 14-02-1398
- نویسندگان: Mohammad Taghi Shakeri,Seyed Ehsan Saffari,Bita Dadpour,Hossein Aghajani,Ali Hadianfar,Reza Afshari
- مشاهده