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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Geopersia
- نوع مقاله: Journal Article
- کلمات کلیدی: Heavy metal,Enrichment factor,Contamination,Chah-shalgami
- چکیده:
- چکیده انگلیسی: The Chah-Shaljami polymetal ore deposit contains heavy metal anomalies in various mineralization zones. Geochemical distribution and correlation of elements in surficial soilsindicate that sulfide, sulfate, sulfosalt and silicate mineral occurrences (e.g. Pyrite, chalcopyrite, galena, sphalerite, molybdenite, enargite, hornblend and biotite) in mineralization and stockwork zones resulted in the strong correlation between some elements such as Fe, Mn, Mg, Ni, Pb, Zn, Cr, Sn. In addition, there is a relatively strong correlation between Cd, Ti, Ba, Al which may be related to the vein-veinlets and the intrusives. Contamination indexes (enrichment factor, geoaccumulation index (Igeo), contamination factor and modified contamination degree) were used to assess the soil and sediment enrichment in Chah-Shaljami ore deposit. These indexes indicate enrichment of S, Sb, Mn, Pb. Sulfide, sulfate and sulfosalt minerals cause strong sulfur enrichment. Cadmium is weakly contaminated as can be inferred from its paragenetic association with Pb-Zn minerals in polymetal ore deposits.
- انتشار مقاله: 23-03-1397
- نویسندگان: Rahim Dabiri,Heydar Hagdoust,Reza Arjmandzadeh
- مشاهده
- جایگاه : پژوهشی
- مجله: Sociological of Studies of youth
- نوع مقاله: Journal Article
- کلمات کلیدی: Spiritual Needs,Andimeshk,Religious Missionaries,Tendency to religion,Religion updating,Religious orders
- چکیده:
- چکیده انگلیسی: Nowadays the global changes process and various developments in various fields of economic, social and cultural rights at the national level have led to present the issue of religion in the country as a sub-category alongside other categories. The aim of this study is to investigate the methods of tendency to religion and effective factors on it among high school students in Andimeshk. The data collection instrument is a questionnaire. In analyzing the data, the authors used Kendall's correlation coefficient, chi-square, multiple regression analysis and path analysis software SPSS. The results show that the mean of the rate of trend towards religion is in the average. There is a direct relationship between the variables of religious missionaries' role and the role of religion in signifying the life, the role of religion in meeting the spiritual needs and the attitude towards updating the religion. Regression analysis showed that 54 percent of the change in the attitude towards religion is related to the independent variables. According to the results of the analysis, the total amount of direct influence of independent variables on the dependent variable equals to 0.9 and according to the results of regression analysis; the variable amount of attitudes towards updating the religion is 0.57.
- انتشار مقاله: 03-03-1396
- نویسندگان: Issaq Arjmand Siahpoush,Hassan Arjmandi,Bahareh Arjmand Siahpoush,Ali Arjmand,Ahmad Reza Arjmandi
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Renewable Energy and Environment
- نوع مقاله: Journal Article
- کلمات کلیدی: Prediction Model,Greenhouse gases,Renewable energy,Electricity consumption,Carbon tax
- چکیده:
- چکیده انگلیسی: Climate change refers to any significant and long-term alterations in global or regional weather conditions. The impact of climate change on the industrial plans is enormous, while the water supply sector has been challenged to examine how it could continuously operate in the current situation. Optimization of energy consumption and reduction of Greenhouse Gases (GHG) emissions are some of the priorities of water companies. The objective of the study is to propose a novel evaluation approach to the feasibility of using renewable energies (solar, wind, and biomass) in the water and wastewater industry. Tehran Water and Wastewater Company consists of six regional districts and forecasting of its energy consumption, power costs, and carbon tax rates for the next ten years was done by using the regression model. The results indicated that increase in water supply and electricity consumption was evidenced by the increase in Tehran's annual population. GHG emissions were calculated in two scenarios, the first of which is based on the total supply of required electricity from conventional power plants and the second is on the generation of approximately one-third by renewable energies. In addition to the higher emissions of carbon dioxide (CO2) from diesel and oil power plants than the natural gas-fueled plants, by increasing the carbon tax to more than 30 USD per tonne of CO2, it is expected that the emissions will be reduced by 30 % in all fossil-fueled power plant types. Results showed that a small amount of tax was not effective in reducing GHG emissions.
- انتشار مقاله: 24-01-1399
- نویسندگان: Ensieh Ozgoli,Younes Noorollahi,Reza Arjmandi,Ali Mohammadi
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Pertussis,Pertussis Vaccine,Whooping cough
- چکیده:
- چکیده انگلیسی: Background: It seems that the incidence of pertussis-like illnesses is considerably increasing despite the wide coverage of immunization with the whole cell pertussis vaccine. We aimed to investigate the occurrence of pertussis in vaccinated children by measuring anti-pertussis antibodies. Methods: In this cross-sectional study, blood samples were taken from vaccinated children aged 2, 4, 6, 12, 18, and 72 months. Anti-pertussis IgG and IgA were measured by ELISA. P<0.05 was considered significant. Results: 725 children were enrolled in the study. Geometric mean titers for IgG that showed a slight decease after 2 months of age and increased distinctly in children aged 72 months. The frequency of the individuals whose IgG was above the determined cut-off (derived from mean+2SD) was observed in 1% of the 2, 4, and 6-month-old infants, 6% of the 12 and 18-month-olds and 12% of the 6-year -old children. Positive IgA titers were detected in 5, 9, 6, 23, 11, and 8% of children aged 2, 4, 6, 12, 18, and 72 months, respectively. Conclusion: Since a considerable percentage of children had high levels of anti-pertussis IgG antibodies (≥2 SD), positive anti-pertussis IgA, and most importantly an increased level of anti-pertussis IgG geometric mean titer at 6 years of age, further investigations regarding the protection provided by the presently used pertussis vaccine seems necessary.
- انتشار مقاله: 13-09-1392
- نویسندگان: Abdollah Karimi,Anahita Sanaei Dashti,Reza Arjmand,Mohsen Moghadami,Taherh Kheirkhah,Farideh Shiva,Zari Gholinejad,Hassan Joulaei
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Gastrointestinal,Zygomycosis,Mucormycosis
- چکیده:
- چکیده انگلیسی: Fungal infections of the gastrointestinal tract are not common in children, especially in immunocompetent ones. In this case report we describe a child who was presented with abdominal pain and mass, bloody diarrhea and fever. He was treated for amebiasis, but due to treatment failure and deterioration of his condition, he underwent a laparatomy. Histologic examination of the excised bowel in the second look revealed Basidiobolomycosis, a fungus belonging to the order Entomophthorales. The signs, symptoms, treatment and diagnosis of the present case indicate that fungal infections must be considered not only in immunocompromised patients with abdominal pain and mass, but also in apparently immunocompetent ones.
- انتشار مقاله: 11-09-1392
- نویسندگان: Anahita Sanaei Dashti,Reza Arjmand,Abdollah Karimi,Maryam Kadivar
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Earth Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Tous fault,Marly bedrock,Mashhad Plain aquifer,Active Fault
- چکیده:
- چکیده انگلیسی: Mashhad Plain affects by a series of active faults in the northern margin of the Binalud and the southern margin of the Kopet-Dagh mountain ranges. The activity of these faults forms the morphology of the stepped bedrock of the Plain. In addition, the faults’ activities in the Quaternary period are the main effective parameters in thickness and texture of aquifer deposits in Mashhad Plain. In this regard, one of the active and important faults in Mashhad Plain is Tous fault, which runs from the northwest of Mashhad Plain into the city of Mashhad. The present research aims to analyze the effect of this fault on groundwater resources in the north of Mashhad Plain. For this purpose, ancient geoelectric studies and many well logs data are gathered, interpreted and by the combination of all of the geology information a new model for groundwater resource of the area proposed. The results of this study indicate that activities of Tous fault results to the uplifting of the Neogene Marly bedrock of Mashhad Plain, which such as a barrier prevents the flow of groundwater from the northern plain to the main aquifer of Mashhad Plain, and practically has divided the alluvial aquifer of Mashhad Plain into two parts. The maximum sediment thickness can be seen adjacent to the fault in the north of the Tous region and the tomb of Ferdowsi.
- انتشار مقاله: 29-05-1397
- نویسندگان: Mohammadreza Arjmand,Abbas Kangi,Naser Hafezi Moghaddas
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Earth Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Quchan fault,drainage pattern,Landsat-8,Thermal Anomaly
- چکیده:
- چکیده انگلیسی: The Quchan fault is located in Quchan - Shirvan area which is a part of Chenaran- Bojnourd plain in Kopeh-Dagh zone, NE Iran. The Quchan active fault with northwest – southeast trending is one of the most important strike-slip faults in the area which its activity led to the numerous historical and instrumental earthquakes. The Neo-tectonic activities of this fault are investigated by the drainage patterns, displacement of the waterways, the impact on the alluvial fan deposits and the Quaternary sediments cutting. Here, we aim to employ instrumental seismicity along with satellite imagery data, thermal images, shuttle radar topography mission (SRTM) data plus field observations to explain the mechanism and active tectonics of the southeast Quchan fault termination. Processing Landsat-8 image synchronous with the maximum micro-seismic occurrences reveals that thermal anomaly is positive and corresponds to the major lineaments. Thermal anomaly images have also revealed three hidden faults which have not yet been distinguished in the field surveys. The continuous strike slip activity of the Quchan fault over the time resulted in the formation of compression zone and new thrusts along the southeastern end. By continuance of thrust activity, the anticline starts to accrete and the older thrusts are covered with folding sedimentary rocks, thus thrust loader continues until now. This research is the first successful attempt in Iran to detect hidden active faults and investigate fault termination by employing satellite thermal surveys.
- انتشار مقاله: 22-12-1395
- نویسندگان: Reza Arjmandzadeh,Vahid Shafiei Rashvanlou,Rahim Dabiri,Alireza Almasi
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Apoptosis,Toxoplasma gondii,Gene expression,In vitro,Spermatogonia
- چکیده:
- چکیده انگلیسی: Objective(s): The protozoan Toxoplasma gondii as an intracellular protozoan is widely prevalent in humans and animals. Infection generally occurs through consuming food contaminated with oocysts and tissue cysts from undercooked meat. The parasite is carried in sexual fluids like semen but there is little information about the effect of T. gondii on the male reproductive system. In this study, we examined the effect of T. gondii tachyzoites on apoptosis induction in type B spermatogonia (GC-1) cells.
Materials and Methods: Fresh tachyzoites taken of infected BALB/c mice, GC-1 spg cells were infected with increasing concentrations of tachyzoites of T. gondii, then apoptotic cells were identified and quantified by flow cytometry. The genes associated with apoptosis were evaluated by RT2 Profiler PCR Array.
Results: PCR array analysis of 84 apoptosis-related genes demonstrated that 12 genes were up-regulated at least 4-fold and that one gene was down-regulated at least 2-fold in the T. gondii infection group compared with levels in the control group. The number of genes whose expression had increased during the period of infection with T. gondii was significantly higher than those whose expressions had decreased (18 versus 1) and Tnfrsf11b had the highest rate of gene expression.
Conclusion: T. gondii induce in vitro apoptosis of GC-1 spg cells. This effect shows a trend of concentration-dependent increase so that with an increase in the ratio of parasite burden to spermatogonial cells, in addition to an increase in the number of genes whose expression has changed, the fold of these changes has increased as well.- انتشار مقاله: 09-07-1398
- نویسندگان: Jasem Saki,Mohamad Sabaghan,Reza Arjmand,Ali Teimoori,Mohammad Rashno,Ghasem Saki,Saeedeh Shojaee
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Basic Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Apoptosis,Toxoplasma gondii,Gene expression,In vitro,Spermatogonia
- چکیده:
- چکیده انگلیسی: Objective(s): The protozoan Toxoplasma gondii as an intracellular protozoan is widely prevalent in humans and animals. Infection generally occurs through consuming food contaminated with oocysts and tissue cysts from undercooked meat. The parasite is carried in sexual fluids like semen but there is little information about the effect of T. gondii on the male reproductive system. In this study, we examined the effect of T. gondii tachyzoites on apoptosis induction in type B spermatogonia (GC-1) cells.
Materials and Methods: Fresh tachyzoites taken of infected BALB/c mice, GC-1 spg cells were infected with increasing concentrations of tachyzoites of T. gondii, then apoptotic cells were identified and quantified by flow cytometry. The genes associated with apoptosis were evaluated by RT2 Profiler PCR Array.
Results: PCR array analysis of 84 apoptosis-related genes demonstrated that 12 genes were up-regulated at least 4-fold and that one gene was down-regulated at least 2-fold in the T. gondii infection group compared with levels in the control group. The number of genes whose expression had increased during the period of infection with T. gondii was significantly higher than those whose expressions had decreased (18 versus 1) and Tnfrsf11b had the highest rate of gene expression.
Conclusion: T. gondii induce in vitro apoptosis of GC-1 spg cells. This effect shows a trend of concentration-dependent increase so that with an increase in the ratio of parasite burden to spermatogonial cells, in addition to an increase in the number of genes whose expression has changed, the fold of these changes has increased as well.- انتشار مقاله: 09-07-1398
- نویسندگان: Jasem Saki,Mohamad Sabaghan,Reza Arjmand,Ali Teimoori,Mohammad Rashno,Ghasem Saki,Saeedeh Shojaee
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Biomedicine and Public Health
- نوع مقاله: Journal Article
- کلمات کلیدی: Epidemiology,Malaria,Plasmodium vivax,Ramhormoz
- چکیده:
- چکیده انگلیسی: Introduction: One of the most important infectious diseases, especially in subtropical and tropical regions in developing countries is Malaria.Due to the importance of the infectious disease in these areas, the aim of current study is to evaluate epidemiology of malaria through microscopic evaluation in Ramhormoz County, southwest of Iran, during 2001-2016.
Methods: In this cross-sectional study, the blood specimens were collected from all suspicious malaria individuals referred to the Ramhormoz Healthcare Network. For the preparation of peripheral blood smears, one drop of sample was carefully placed on a microscopic slide and the slide was also stained by the Giemsa staining. In order to the detection of the parasite, the peripheral blood smears were evaluated via optical microscope.
Results: In this study, of 2769, 40 (1.44%) individuals were infected to Plasmodium vivax. The highest frequent of malaria was observed in 2001, 2002 with 13 (8.49%) and 11 (6.79%) cases, respectively as well as the lowest prevalence was seen in 2007, 2010, 2012, 2014 and 2015 with nil case. From a total of 40 malaria confirmed cases during the years, 34 (85%) and 6 (15%) were male and female, respectively. Also, of 40, 34 (85%) and 6 (15%) cases were lived in the rural and urban areas, respectively.
Conclusion: These findings showed a significant decrease in malaria incidence in Ramhormoz County, southwest of Iran during 2001-2016. Based on the climatic status of the County, the risk of malaria epidemics must be considered constantly and the control programs should be continued until the elimination of disease.- انتشار مقاله: 19-10-1396
- نویسندگان: Forough Kazemi,Somayeh Fallahizadeh,Roya Allasvand,Reza Arjmand
- مشاهده