oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 13 )

2018 ( 25 )

2017 ( 43 )

2016 ( 47 )

Custom range...

Search Results: 1 - 10 of 4084 matches for " Seyed Jamal Sheikh Zakariaei "
All listed articles are free for downloading (OA Articles)
Page 1 /4084
Display every page Item
Investigation of Petrophysical Parameters of Kangan Reservoir Formation in One of the Iran South Hydrocarbon Fields  [PDF]
Mostafa Kiakojury, Seyed Jamal Sheikh Zakariaei, Mohammad Ali Riahi
Open Journal of Yangtze Oil and Gas (OJOGas) , 2018, DOI: 10.4236/ojogas.2018.31004
Abstract: This article studies the properties of k4 Kangan reservoir Formation zone in one of hydrocarbon fields in south of Iran. To do this, some petrophysical parameters such as porosity and permeability in sedimentary facies, porosities and diagenesis of k4 Kangan Formation were measured and the quality of k4 Kangan Formation is studied through analyzing petrophysical data. This study investigates the role of sedimentary facies, types of porosity and controlling diagenetic evolution on k9 Kangan reservoir Formation in one of hydrocarbon fields of south of Iran. In this study, macroscopic and microscopic studies are done on thin sections of Kangan Formation (k4) and the facies and sedimentary environment affecting reservoir formation in two wells of South Pars field. In order to study the microscopy of 166 thin sections, two wells (2 × 3) are used from core of the South Pars. Using polarized microscopy, allochems, the major complications of diagenesis and facies are investigated and dolomite rock textures are classified. The average total porosity and effective porosity of Kangab well are 20.47% and 19.21%. The results show that saturation, porosity and lithology, k4 zone of Kangan Formation reservoir has good conditions.
The Petrography, Mineralography and Microprobe Analysis on New Exploratory Excavation Phase in Sarcheshmeh Copper Mine Pit and Comparing Them with Existing Data from the Other Area in South West Sarcheshmeh  [PDF]
Mehdi Abdollahy Riseh, Mansur Vosooghi Abedini, Mohammad Hashem Emami, Seyed Jamal Sheikh Zakariaei
Open Journal of Geology (OJG) , 2017, DOI: 10.4236/ojg.2017.72011
Abstract: Kerman region where Sarcheshmeh zone is located includes the end part of Uremia-Dokhtar Zone. Extrusive igneous group in Sarcheshmeh is as follows: 1) andesite and 2) rhyodacite. The group of intrusive igneous rocks includes 1) porphyry granite, 2) porphyry granodiorite, and 3) porphyry diorite. Nochoon mine is located at 4 km of southwest of Sarcheshmeh copper mine and it comprises of a group of extrusive igneous rocks as follows: 1) andesite, and 2) dacite. Based on results of microprobe analysis, pyroxene mineral’s composition in these rocks of diopside and augite indicates amphiboles of composite zone of magnesium hosting type and existing plagioclases in regional rock for labradorite and bitonit composition. The most common compounds are chlorite with formula among antigorite and amosite. Comparison of magnetite mineralization in Sarcheshmeh and Nochoon indicates vein mineralization in Nochoon and disseminated granulation in Sarcheshmeh and particularly concerning to chalcopyrite, Nochoon includes more veins than Sarcheshmeh.
Petrology and Geochemical Properties of the Granitoid Complex of Chahar-Gonbad, Southeast Iran  [PDF]
Abdolhamid Ansari, Seyed Jamal Sheikh Zakariaii, Sara Dargahi, Mohsen Arvin
Open Journal of Geology (OJG) , 2017, DOI: 10.4236/ojg.2017.76058
Abstract: The Chargonbad batholite is located in Sirjan and southeast of magmatic zone of Urumieh-Dokhtar. The main volume of this rocks consisted of Granodiorite and Monzogranite, but it’s also consists of Quartzdiorite, Tonalite and Syenogranite. They have allotrimorphic granular texture with subordinate porphyritic texture. Their enclaves consist of: xenoliths enclaves, microgranular mafic enclaves (Diorite to Quartzdiorite in composition) and autolite enclaves (Tonalite, granodiorite and monzogranite in composition). The Chargonbad batholite rocks are also cut by different types of dykes which are mainly consisted of dykes and veins of pegmatic stage, microgranular dykes (andesit and andesit basaltic in composition) and microgranular dykes that are similar to mafic enclaves. Evidence shows that regional examples represent properties of granitoids type I. As well as, Granite of Granitoid body of this area has magnesium nature and shows the cordellarian granites features. Based on the tectonomagmatic environment determination diagrams, all samples from the Chahargonbad study area located in the arc island setting due to subduction and show the characteristic of active continental margin setting.
Estimating Strain Changes in Concrete during Curing Using Regression and Artificial Neural Network
Kaveh Ahangari,Zahra Najafi,Seyed Jamal Sheikh Zakariaee,Alireza Arab
Journal of Construction Engineering , 2013, DOI: 10.1155/2013/380693
Abstract: Due to the cement hydration heat, concrete deforms during curing. These deformations may lead to cracks in the concrete. Therefore, a method which estimates the strain during curing is very valuable. In this research, two methods of multivariable regression and neural network were studied with the aim of estimating strain changes in concrete. For this purpose, laboratory cylindrical specimens were prepared under controlled situation at first and then vibration wire strain gauges equipped with thermistors were placed inside each sample to measure the deformations. Two different groups of input data were used in which variables included time, environment temperature, concrete temperature, water-to-cement ratio, aggregate content, height, and specimen diameter. CEM I, 42.5?R was utilized in set (I) and strain changes have been measured in six concrete specimens. In set (II) CEM II, 52.5?R was employed and strain changes were measured in three different specimens in which the diameter was held constant. The best multivariate regression equations calculated the determined coefficients at 0.804 and 0.82 for sets (I) and (II), whereas the artificial neural networks predicted the strain with higher of 1 and 0.996. Results show that the neural network method can be utilized as an efficient tool for estimating concrete strain during curing. 1. Introduction Due to increasing use of high-performance concrete, early-age concrete behavior is a problem of great concern. Concrete at early ages experiences thermal deformations due to the heat generation caused by the cement hydration reactions. These deformations may lead to cracking of concrete. So, one of the most important parameters in studying concrete behavior is deformation or strain [1]. Considering that the major difficulty with early-age concrete monitoring relates to measurement of strains [2, 3]. Diagnosing the strain during hydration is one of the fundamental problems [1]. Also, measuring concrete strain during curing requires precise instruments and high costs. A practical and accurate measurement of this parameter is faced with major problems [1]. Therefore, utilizing a method that estimates strain during curing is very beneficial. ASTM C827 is the only standardized test to measure early-age shrinkage of concrete. This test method is limited as only vertical movement can be measured [4]. Jensen and Hansen have devised a method for measuring linear autogenous shrinkage of cement paste [5]. This method uses sealed soft plastic tubes that are partially fixed to a rigid frame. If autogenous shrinkage
Experimental and Numerical Analysis of Forming Limit Diagram (FLD) and Forming Limit Stress Diagram (FLSD)  [PDF]
Mehdi Safari, Seyed Jamal Hosseinipour, Hamed Deilami Azodi
Materials Sciences and Applications (MSA) , 2011, DOI: 10.4236/msa.2011.25067
Abstract: In this work, forming limit diagram for aluminum alloy 3105 is performed experimentally and forming limit based on stress (FLSD) calculated from strains that resulted from experimental procedure. In addition, numerical prediction by ductile fracture criteria using simulation is considered and it is shown that they are well suited with the experimental results. The strain paths from finite element simulations are found fairly acceptable to represent both sides of the FLD.
The Nuée Ardentes of Sabalan Volcano in Iran  [PDF]
Reza Fahim Guilany, Ali Darvishzadeh, Seyed Jamal Sheikhzakariaee
Open Journal of Geology (OJG) , 2016, DOI: 10.4236/ojg.2016.612110
Abstract: This article deals with the introduction and explanation of the two nuéeardentes of “Mue’el Valley” and “Shirvandareh Valley” which are one type of the pyroclastic flows of Sabalan volcano. One of the features of nuéeardente in these two valleys is the presence of large blocks in upstream of valley and the abundance of ash in downstream which it has happened in one stage in Mue’el and in several stages in Shirvandareh Valley. Considering the antiquity of the great Sabalan volcano and numerous changes that have happened during these long years in the region, determining the temperature of nuéeardente was impossible. But what could be mentioned as a sign of high temperature because of nuéeardente is the presence of rust ground mass on piece levels which indicate hot water steam (500°C to 600°C). Also puzzle breakings like those in these rocks should be the result of severe explosion blast and very fast movements of nuéeardente that has broken these rocks instantly. These nuéeardentes are peléan type and they are more or less synchronous, and the main reason could be the huge explosion which happened because of the second caldra’s subsidence. By comparing deposits of the two nuéeardentes of Mue’el Valley and Shirvandareh Valley, it is observed that the extent, thickness, and size of blocks are higher in Shirvandareh than those in Mue’el Valley. Also considering higher levels of pieces’ adherence and hardness of deposits, it can be concluded that the temperature of this complex was higher than that of Mue’el Valley, and in general the power of Shirvandareh’s nuéeardente is more than the Mue’el Valley’s.
Markedness in Writing: A Case of EFL Students
Seyed Foad Ebrahimi,Seyed Jamal Ebrahimi
Theory and Practice in Language Studies , 2012, DOI: 10.4304/tpls.2.4.773-777
Abstract: Theme is the element which serves as the point of departure of the message; it is that which the clause is concerned (Halliday, 1994). One of the themes in Halliday’s (1994) model is marked theme in which there are some elements put in the theme position that frequently indicate notions such as validation of internal evidence; location in discourse time/space and writer viewpoint (Davies, 1989 as cited in Gosden, 1992). Such fronted elements, often at sentence boundaries, commonly have the function of textual organization by signaling changes and turns in real-world and discourse circumstances. This study made frequency and functional analysis of marked theme used in students’ composition writings. This study was carried out on the corpus of 180 compositions come from narrating three pictorial by sixty students- 20 sophomore, 20 junior, and 20 senior- majoring in Teaching English as Foreign Language. Students narrated these stories in three sessions of 45 minutes. The gathered data, 180 compositions, were analyzed in terms of marked theme based on Halliday’s (1994) model of thematic organization. The results illustrated significant differences between the three groups regarding their use of marked theme.
To Determine the Challenges in Commercialization of Nanotechnology in Agricultural Sector of Iran
Seyed Jamal Hosseini,Somaeih Esmaeeli
Research Journal of Biological Sciences , 2012, DOI: 10.3923/rjbsci.2010.448.451
Abstract: Faculty members in agricultural colleges and research centers in the Mazandaran Province were surveyed in order to explore their perception about the challenges influencing the commercialization of the data was analyzed by using ordinal factor analysis technique. Based on the perception of the respondents and ordinal factor analysis, factors were categorized into eight challenges namely, infrastructural, production, business, management, economic, technical, social/cultural and research challenges nanotechnology in agricultural sector in Iran. The challenges were then ordered by the magnitude of their impact.
Petrography, Temperature Measurement, and Economic Evaluation of Granitoid Pluton of Qohrud-Kashan Using EPMA, XRD, and XRF Analysis  [PDF]
Afshin Ashja Ardalan, Mina Khodadady, Mohammad Hashem Emami, Jamal Sheikh Zakariaie, Mohammad Hosein Razavi, Abdollah Yazdi
Open Journal of Geology (OJG) , 2014, DOI: 10.4236/ojg.2014.48032
Abstract:

The area which is being studied is located in northwest of Isfahan, 30 kilometers south of Kashan, and southern section of Qmasar. The longitude of the area of study is 51°19'13\"E to 51°26'26\"E and its latitude is 33°34'24\"N to 33°44'24\"N. Based on microscopic observations, modal analysis, and also based on their location in the Streckeisen [QAPF], both the stones of the Qohrud batholitic mass themselves and its enclaves are more in quartz monzonite ranges. Granitoid also have quartz monzonite enclaves. These enclaves are from both microgranular mafic and Autolith types which indicate the mixing of two magmas. At the center of the pluton, there are indications of existence of main magma reservoir and magma mixing. In terms of mineralogy, the granitoid rocks of the area very much resemble I-type. The zoning of the plagioclases is both the normal kind and variation invert and has andesine general composition. The probed biotite sample contains iron and belongs to a granitic sample from the center of the mass. Also, the ranking graph indicates biotite as the source of recrystallization for the analyzed points. The probed biotite sample of the Qohrud area showed formation temperature of 730 degrees centigrade. According to the Rb and Sr contents, the source of the rocks is at depths of 20 to 30 kilometers from the earth’s surface that are depending on the subduction zone. The formation temperature of the specimens of the Qohrud batholithic mass is mostly between 900 to 1000 degrees centigrade. [At] the center of the mass (around Qahrud), the amount of molybdenum is higher than the economic limit.

Mineral Chemistry in Volcanic Rocks of Ore Deposit Nochun and Sarcheshmeh Copper Mine, Iran  [PDF]
Mehdi Abdollahi Riseh, Mansur Vosughi Abedini, Mohammad Hashem Emami, Seysd Jamal Sheikh Zakariaii
Open Journal of Geology (OJG) , 2017, DOI: 10.4236/ojg.2017.73018
Abstract: This paper studies on clinopyroxene, plagioclase of andesitic to dacite rocks of Nochun area to understand the geotectonic and geothermobarometry conditions. Eocene calc-alkaline volcanic rocks are exposed in Nochun that are near the Sarcheshmeh cooper mine. Volcanic rocks consist of andesitic to dacite rocks. Minerals in the volcanic rocks exhibit degrees of disequilibrium features. Plagioclase as dominant mineral in these rocks generally displays oscillatory zoning; sieves or dusty, cores are usually Ca-rich. Petrographic evidence and varying anorthite content (10% to 90%) of plagioclase and temperature estimates of clinopyroxene indicated fractional crystallization condition later than hydrothermal alteration and partial metasomatism occurred. The varying content indicates that the parent’s magma was generated from subalkaline composition and then hydrothermal alteration affected phenocryst minerals and matrix of andesitic to dacite rocks. The equilibration temperatures of clinopyroxene showed (800°C - 1200°C). Thus, in mafic minerals development of sieve textures in plagioclase, reaction rims, zoning and heterogeneity of plagioclase phenocrysts, the resorbed and embayed phenocrysts, unique composition of clinopyroxene phenocrysts; support fractional crystallization at deep reservoir and high pressure condition as an important process in the evolution of these rocks.
Page 1 /4084
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.