List of Articles سرب

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  1 - Mineralogy and mode occurrence of sulfides, sulfates and carbonates in fluorite mines of East Mazandaran province
  شهربانو  Zabihitabar بهنام  شفیعی
  Upper parts of Elika carbonate Formation belonging to middle Triassic in central part of structural- sedimentary zone of Alborz in East of Mazandaran province (Savadkuh, Khatirkuh and Kiasar regions) are hosted some of important F-Pb-Ba ore deposits contain of PachiMian More

  Upper parts of Elika carbonate Formation belonging to middle Triassic in central part of structural- sedimentary zone of Alborz in East of Mazandaran province (Savadkuh, Khatirkuh and Kiasar regions) are hosted some of important F-Pb-Ba ore deposits contain of PachiMiana, SheshRudbar, Era(Alikola) and Kamarposht. Based on of field observations in study, main localization of ore bodies within carbonate rocks are as acrostic, irregular, and discordant respect to bedding that are displayed in fractures and/or karstic cavities in the form of vein, lenses and bodies. Mineralogy in studied ore deposits generally is simple and mainly composed of galena, barite, fluorite, calcite and minor sphalerite. Macroscopic and microscopic observations are shown variety of syngenetic and epigenetic structures and textures. Disseminate, stylolite and micro-veinlet textures of galena and calcite with or without other mainly minerals are recognized as syn-genetic textures respect to host rocks. Epigenetic structures and textures as open space filling type such as vein-veinlet, zebra, lamination, primary replacement and colloform are dominant textures of high-grade ores that formed main and economic zones of ore body concentration in deposits. Existence of secondary textures such as curvature and wind in triangle cleavage of coarse-grained galenas and also replacement of galena by cerussite and covellite show deformation and supergene oxidation after the main stage of mineralization. Based on current research, mineralization in F-Ba-Pb ore deposits of central Mazandaran is formed and evolved at two steps (1) primary or syn-diagenetic, and (2) main or epigenetic. According to structural signatures of ore body appearance in deposits environment and also textural evidences in macroscopic and microscopic scales, the main and economic stage of mineralization in studied ore deposits is introduced as epigenetic. Manuscript profile
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  2 - Investigation effect of pH, adsorbent dosage and initial concentration on lead adsorption of contaminated water by goethite and Hormoz Island ochre
   Mahmudy Gharaie  Mazaheri  Ahmadpour  Savabi سیده منیره  حسینی
  Adsorption is one of the effective and frugal methods that used for removal of toxic metals-such as lead- from wastewater. In this paper, effect of three parameters including pH, adsorbent dosage and initial concentration of lead has been studied by two inexpensive adso More

  Adsorption is one of the effective and frugal methods that used for removal of toxic metals-such as lead- from wastewater. In this paper, effect of three parameters including pH, adsorbent dosage and initial concentration of lead has been studied by two inexpensive adsorbents including natural goethite and Hormoz island ochre. The effect pH on lead adsorption by each of adsorbents shows that lead adsorption percent increase with pH increasing to 5%. On the other hand, experiments showed that with increasing adsorbent dosage, adsorption percent increase in both adsorbents. But ochre unlike goethite has high ability for lead adsorption even in adsorbent dose 2 g/L. Investigations showed that in high lead concentrations ochre toward goethite is more effective adsorbent for lead. So that ochre under condition with initial concentration 150 mg/L, ambient temperature (23.5◦C), pH=5, adsorbent dose 6g/L, reaction time 60 min and particle size smaller than 230 mesh removes 97.57% of lead. Goethite removes 78.53% of lead at the same condition. In this condition, maximum lead adsorption capacity for ochre and goethite is 24.39 and 19.63mg/g respectively. Initial concentration and adsorption percent shows direct relation for ochre, but reverse for goethite. Langmuir and Frundlich adsorption isotherms show that goethite follows Langmuir model with correlation coefficient of 0.995, but ochre almost follows both models of Langmuir and Frundlich. Manuscript profile
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  3 - Geochemistry of ore facies and alteration zoning pattern of the Varandan Ba-Pb-Cu volconogenic massive sulfide deposit, southwest of Qamsar
  Fayegh  Hashemi Fardin Mousivand Mahdi Rezaei-Kahkhaei
  The Varandan Ba-Pb-Cu deposit is located in southwest of Qamsar which is part of Urumieh-Dokhtar magmatic-arc zone. Mineralozation occurred as four sub-horizons in the unit1 of volcaniclastics and volcanics (acidic tuff and andesite) of Middle-Late Eocene. Each sub-hori More

  The Varandan Ba-Pb-Cu deposit is located in southwest of Qamsar which is part of Urumieh-Dokhtar magmatic-arc zone. Mineralozation occurred as four sub-horizons in the unit1 of volcaniclastics and volcanics (acidic tuff and andesite) of Middle-Late Eocene. Each sub-horizon consists of five ore facies including: 1) stringer zone, 2) vent complex zone, 3) massive zone, 4) bedded-banded zone and 5) hydrothermal-exhalative sediments of Fe and Mn bearing. Main wall rock alterations in the deposits include chloritic-quartz and quartz-sericitic. Alteration zoning is observed in the deposit as chloritic-quartz at the core and quartz-serisitic in the margins of the footwall of the ore sub-horizon. Electron microprob analysis (EPMA) on the chlorite in stringer zones of the second and third sub-horizons show that these chlorites are Fe-rich chlorite and close to the clinochlor field. Geochemical studies indicate that grades of Ag, As, Cu, Sb and Sr in the stratiform ore (bedded-banded and massive) of the third sub-horizon are much higher than the other sub-horizons, and are 41, 273, 1945, 390 and 1013 ppm, respectively. All geochemical studies show that metal zoning in this deposit is clear, this is characteristic of VMS deposits. Development of zone-refining and over refining processes caused leaching of Cu from the stringer zone and vent complex facies and its later precipitation in the bedded ore facies. Among across to different sub-horizons in the Varandan deposit, third sub-horizon is recognized as economic for Ag extraction . Manuscript profile
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  4 - Formation of calamine in Ahmadabad Zn (Pb) Non-sulfide deposit (Northeast of Bafq)
  Sara Amani Lari Iraj Rassa Ali Amiri
  Ahmadabad calamine deposit is located in Posht-e Badam block, 80 km of northeast of Bafgh. The dolomitic unit of Shotori Formation is Middle Triassic age and is ore deposit host rock. Primary non-sulfide mineralization belongs to the Upper Triassic to Jurassic and inclu More

  Ahmadabad calamine deposit is located in Posht-e Badam block, 80 km of northeast of Bafgh. The dolomitic unit of Shotori Formation is Middle Triassic age and is ore deposit host rock. Primary non-sulfide mineralization belongs to the Upper Triassic to Jurassic and includes galena, sphalerite and pyrite since being affected by subsequent tectonic phases- are crushed, uplifted, weathered and oxidized and produced non-sulfide minerals. Calamine, Cerussite, wulfenite, iron oxide and hydroxide are the most abundant non-sulfide minerals in the region. Mineralogical and field observations revealed that calamine is formed in two ways, i.e. direct replacement and wall- rock replacement. Direct replacement calamine is formed at the site of primary sulfide mineralization and has more mineralogical variability compared with the wall-rock replacement type. Mineralogical characteristics of the minerals revealed, metal-rich solutions perform non-sulfur mineralization in the unsaturated zone, within the porous host rock and the type of mineral is affected by changes in carbon dioxide pressure and ambient pH. The average values of the oxygen stable isotope data of hydrozincite is 25.5‰; therefore, the average temperature for the formation of this mineral is 29 ºC. Chemical analysis showed that the direct replacement calamine has more lead and the other type has more zinc, and due to the high concentration of arsenic and cadmium in the mineral composition of the area, more attention should be paid to the environmental issues. Manuscript profile
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  5 - Using Radio Frequency IDentification (RFID) a Mechanism for Management of Perishable Products Supply Chain
  Fatemeh  Zabihi Morteza  Khakzar Bafrue
  10.7508/jstpi.2015.04.002
  Radio Frequency Identification (RFID), a leading technology could be useful for reducing the supply chain food. The RFID can be effective with receiving product information and reducing costs. The greatest challenges are the supply chain management of perishable goods, More

  Radio Frequency Identification (RFID), a leading technology could be useful for reducing the supply chain food. The RFID can be effective with receiving product information and reducing costs. The greatest challenges are the supply chain management of perishable goods, especially the food. Variation in the number of goods, tracking and follow-up the flow of goods throughout the supply chain, low life expectancy, high volume products requiring temperature control in the supply chain is some of the challenges. The risk of food at each stage of the supply chain of food can occur, resulting in the definition of management to obtain information, ingredients, date of production (sales, consumption), etc., and provide it in a transparent manner to provide supply chain suppliers and consumers is necessary. One of the best possible solutions is using of RFID that help the supply chain management in perishable goods logistics. This paper examines the business model of the financial implementation of RFID in tracking food. To clarify the subject, a case study RFID system using in Taiwan welfare chain stores has been providing. In this case by introducing two upgrade projects 4 and 6 years old, profit and costs associated with the implementation of RFID for manufacturers, distributors and retailers in the supply chain of convenience stores have been analyzed. Manuscript profile
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  6 - Comparison resilience and coping strategies between volunteers and soldiers who participated in the war against ISIS
  زانا ضالح
  Abstract The aim of this research is to compare resilience and stress coping strategies among Volunteers participated in anti-ISIS warfare and soldiers. The research method is descriptive and causal-comparative type. The statistical population of the study is all Kurd More

  Abstract The aim of this research is to compare resilience and stress coping strategies among Volunteers participated in anti-ISIS warfare and soldiers. The research method is descriptive and causal-comparative type. The statistical population of the study is all Kurdish soldiers and volunteers in three provinces of Halabja, Sulaimani and Erbil in the region of Kurdistan/Iraq who participated in ISIS warfare. In this study, 180 men, aged 20-50 years old, are selected as samples, they are divided into two groups of 90 (90 soldiers) and (90 volunteers), then the Conner and Davidson’s resilience questionnaire and Andler & Parker’s are used to show stress coping strategies. The data are collected and analyzed by t-test and multivariate analysis of variance (MANOVA). The results shows that on resilience scale, the significant level between volunteers and soldiers is bigger than 0.01, which means that there is no difference in terms of resilience between volunteers and soldiers. But there is a significant difference between volunteers and soldiers in coping strategies (p0/01). The problem-oriented style is (P = 0.01 and F = 8.474) and the avoidance-oriented style is (p = 0.01 and F = 6.751). But the F value obtained for emotion-oriented is (0/008) and the significance level is 930/0. Therefore, there is no difference in the emotion-focused. The conclusion of the main findings of this research confirms that organizing special training courses to enhance resilience and helping volunteers and soldiers to reduce war stress is recommended. Considering that the health of soldiers is important for working in the security places and their major role in dealing with enemies and protecting the country. Planning to train the appropriate coping methods and encouraging all soldiers to use the appropriate approach to deal with stress situations is beneficial. Manuscript profile
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  7 - Comparison of Resilience and Stress Coping Strategies between Volunteers and Soldiers who Participated in the War Against ISIS
  Zana Nasih Salih Qadir Fariba Hassani
  The aim of the current research is to determine the difference between resilience and coping strategies among volunteers and soldiers who participated in the war against ISIS. The research method was descriptive and causal-comparative. The population of interest in this More

  The aim of the current research is to determine the difference between resilience and coping strategies among volunteers and soldiers who participated in the war against ISIS. The research method was descriptive and causal-comparative. The population of interest in this study was all Kurdish volunteers and soldiers in all three provinces of Halabja, Sulaimaniyah and Erbil of Iraqi Kurdistan who participated in the war against ISIS. The sample of this study was selected through available sampling. Then, data were collected using Connor-Davidson Resilience Scale ( CD-RISC) and Endler and Parker’s Coping Inventory for Stressful Situations and analyzed by multivariate analysis of variance (MANOVA). The results of this study showed that there was no difference in resilience between volunteers and soldiers, but there was a significant difference in coping with stress scale. In terms of problem-oriented style and avoidance-oriented style, the difference was significant. Therefore, it turns out that there is no difference in emotion-focused coping. The main findings of this study confirm that special training courses are recommended to enhance resilience and help volunteers and soldiers to exprince reduce warfare stress. Manuscript profile
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  8 - Explaining and Presenting Superintendent Competency Model for Iran’s General Inspection Office: with Grounded Theory Approach
    Manijeh Ahmadi   Ali  Delaware
  The main objective of this paper is the presentation of superintendent competency model for Iran’s General Inspection Office. Thus exploratory mixed method was used and the qualitative research methods is based on grounded theory approach. Data collection tool was Inter More

  The main objective of this paper is the presentation of superintendent competency model for Iran’s General Inspection Office. Thus exploratory mixed method was used and the qualitative research methods is based on grounded theory approach. Data collection tool was Interview (structured and semi-structured) with 15 managers and superintendents that were selected using snowball sampling and the method for data analysis is content analysis. Competency codes and components (155 key concept, 33 sub-categories, 11 main categories) were extracted from interviews and a conceptual grounded model was developed. The central concept is "personal characteristics of the superintendents" in the four dimensions of characteristics: personality, moral, insight and analysis. The model was prepared and completed according to causal conditions (personal factors, organizational factors), contextual conditions (individual conditions, organizational conditions), intervening conditions (constraints, environmental conditions), strategies (superintendent’s personal development, organizational development) and consequences (superintendent competency development at the individual level, improving the quality of the organization). With use of the Delphi research methodology, a questionnaire was designed and the model was modified and approved by experts. The test for research hypotheses were formulated and the tested questionnaire was designed and completed by 170 managers and superintendent and the collecting and analyzing of the data and testing of the hypotheses were done by using confirmatory factor analysis and path analysis using SPSS, and PLS. The results of the quantitative phase showed that the relations in the model were confirmed with a satisfactory impact coefficient except 4 out of 16 cases as follows: the impact of the organizational factors on the personal factors, impact of the personal factors on the organization development strategies, personal conditions on the personal development of the superintendents, and environmental conditions on the organizational development strategies. Therefore, the above mentioned factors were not significant and these routes were not consistent with the designed model in the quality department and was not verified as for the quantitative aspect. Manuscript profile
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  9 - Removal of lead with metallic organic nanostructures of iron and benzene tricarboxylate from aqueous solution
  reza alizadeh
  Heavy metals are not chemically degraded, in order to prevent the entry and accumulation of this toxic pollutant along with factory effluents into the environment, so far, different methods have been used, but finding new methods with more efficiency in this area is nec More

  Heavy metals are not chemically degraded, in order to prevent the entry and accumulation of this toxic pollutant along with factory effluents into the environment, so far, different methods have been used, but finding new methods with more efficiency in this area is necessary. In this research, a new class of compounds called organic metallic materials has been used to remove industrial effluent lead. These organic metallic materials contain iron and benzene tricarboxylate. To identify the characteristics of these materials, electron microscope images and Nitrogen adsorption and desorption isotherms has been used. To determine the optimal conditions for using these materials for lead removal from the effluent, the effect of parameters: time (10-120 min), the amount of adsorbent (0.2-0.5 mg/L), pH (3.5 -12.5) and temperature (10-75 ° C) were evaluated. The results show that the composition of MIL-100 (Fe) has a better performance than the other materials in this study and complete removal of lead was achieved with an initial concentration of 10 mg/l and an adsorbent dose of 0.25 mg / l, at a temperature of 50 ° C, pH =4.3 and contact time of 120 min. Other properties of this material in removal of industrial effluent lead such as magnetic properties, reusability in five consecutive periods, large surface area, low cost, high efficiency and easy to use, make it an ideal option for large-scale use. Manuscript profile
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  10 - Examining the amount of cadmium and lead in the soil downstream of Taybad landfill
  akram ghorbani Mohammad ghafori Mohammad javad alipoor
  The aim of this study was to investigate the emission of heavy metals (cadmium and lead) in the soil around Taybad landfill. For this purpose, 15 stations at a distance of 100 meters from each other to the landfill of Taybad city were selected for sampling. Sampling 5 s More

  The aim of this study was to investigate the emission of heavy metals (cadmium and lead) in the soil around Taybad landfill. For this purpose, 15 stations at a distance of 100 meters from each other to the landfill of Taybad city were selected for sampling. Sampling 5 samples and repeating 3 times from each station, the samples were transferred to the laboratory for analysis to check the level of pollution indicators. Hypotheses were analyzed using one-sample t-test and Pearson's correlation coefficient with spss 24 software. It was found that the average total concentration of lead is equal to 52.04 and the average total concentration of cadmium is equal to 1.748. The concentration of the mentioned metals is significantly higher than the average global soil and earth's crust with 95% confidence. In the case of lead and cadmium, the highest contamination was in station 10 and 4, and the lowest contamination was in station 6 and 12, respectively. It is concluded that the amount of soil contamination does not change significantly with increasing distance, because the volume and concentration of contaminant runoff from the landfill (contaminant) along the path is constant. Therefore, it is better to provide environmental training for municipal municipal personnel and citizens of the region and to invest in the restoration of the environment and its further protection. Manuscript profile
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  11 - Structural evolution of the southern Natanz region and its role in the distribution and concentration of Pb-Zn mineralization
  Firouzeh Shavvakhi Saeed Madanipour M. Tadayon Ebrahim Rastad M.J. Kupaei
  The studied area is structurally located in the western part of the Central Iranian structural zone atthe southwestern termination of the Qom-Zefreh Fault. Our structural data represent the older generation of E-W to NW-SE trending thrust faults that juxtapose Permia More

  The studied area is structurally located in the western part of the Central Iranian structural zone atthe southwestern termination of the Qom-Zefreh Fault. Our structural data represent the older generation of E-W to NW-SE trending thrust faults that juxtapose Permian- Triassic (Nayband and Shotori Formations) over younger rock units. Most of the thrust faults have been crossed cut with the younger generation of the strike-slip fault system. Major thrust faulting of the area occurred during post Late Cretaceous time. The final post Oligocene strike slip faulting related to the activation of the Qom- Zefreh fault overprinted and crossed cut older structural features. Our economic geological studies in the south Natanz area represent syngeneic strati bond or Sedex-Like type Pb-Zn epigenetic occurrence of these deposits in Permian-Triassic carbonates and barite developed in the Lower Cretaceous carbonate and clastics. The ore deposit development in Permian-Triassic Carbonates have occurred along thrust faults and then redistributed along strike slip faults with normal component. Therefore, genetically, stratiform deposits developed in the Lower Cretaceous carbonates and clastics (Yazdan and Pinavand Ore deposit) occurred in a regional early Cretaceous extensional regime. However, epigenetic deposits developed in Permian-Triassic carbonates (Changarzeh deposit) were generated during the regional post Late Cretaceous compressional regime and redistributed during post Oligocene strike slip deformation. Manuscript profile