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Showing 34 results for عبداللهی

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Volume 1, Issue 1 (Spring 2008)
Abstract

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Volume 2, Issue 5 (9-2004)
Abstract

Both Jalal-e-Ale Ahmad and Ebrahim-e-Golestan belong to the second generation of Iranian writers. Their close relationships and common experiences in youth have created similarities, especially in the early stories, in their stories. Ale Ahmad expressed his thoughts much earlier than Golestan; however, Ebrahim-e-Golestan has been more accurate and more successful in expressing the same ideas in his fiction. The following paper tries to study these two writers’ works from two dimensions of contexts and techniques. There are many similarities between the contents of their works especially in the first period of writing story.
The similarities between the first series of the stories are of such level that perhaps it can bee said that they were influenced by party-related ideas. From the story techniques, Ale-Ahmad was influenced at the first stage by the French writers in the 19th century and Golestan was influenced by the American writers such as Hemingway and Twin and Bek who were the recently known writers. The closer their physical relation, the more the differences in their stories is.

 

Volume 3, Issue 2 (9-2013)
Abstract

Error management culture is emerging concept which facilitates transferring and sharing the knowledge which obtained from organizational errors among employees and organizational units. This culture leads to improve learning processes among organizational units which denotes the concept of absorptive capacity. Knowledge gained from errors leads to improve organizational innovation which upgrade long-term organizational performance. This study examined the relationship between error management culture and organizational performance with consideration of the absorptive capacity role and innovative performance. All managers of pharmaceutical companies listed in Tehran Stock Exchange were selected as statistical society for this survey. Hypotheses were tested based on 153 collected questionnaires by structural equation modeling and regression analysis. Findings prove a positive relationship between variables. Absorptive capacity and innovative performance play the roles of mediators between error management culture and organizational performance.    
 

Volume 4, Issue 2 (12-2016)
Abstract

Time is an abstract concept standing beside others such as the location and human. Time, in human experience, has two aspects of outer time and inner time. The outer time is indeed that real time which the human being is unable to change its circumstances, while the inner time is the creation of the man’s mind. The present research deals with the examination of the concept of time in the poems of Mahmoud  Darwish and Gheisar Aminpour so as to specify the utilization of the time element by these two poets. This article, at first, has set to define the time lexically and the main opinions stated about time .Then, presenting a definition of outer time and inner time, it studies the thoughts of these two poets on the element of time. This research shows that Mahmoud Darwish and Gheisar Aminpour, for achieving eternity and escape from death, have had recourse to modes like return to past, myth and love, indicating the common view of these two poets on the element of time.    

Volume 4, Issue 3 (12-2015)
Abstract

The present study was conducted to evaluate the efficacy of the pH-shift process in protein recovery from whole and gutted common kilka and characteristics of the produced gel compared with muscle surimi obtained with the conventional method. Although both acidic and alkaline methods reduced total pigment (TP) in isolates obtained from the whole and gutted fish, the alkaline version was more effective and the lowest amount of TP was observed in the isolate from gutted fish using alkaline version. The last sample also contained the lowest amount of TCA soluble peptide which was significantly lower than the others. Also, gel produced from the isolate recovered form gutted kilka with the alkaline version had significantly higher water holding capacity and gel hardness but it was weaker than the sample obtained with conventional method. The results were supported with higher relative amount of actomyosin and actin in the structure of the gels produced from the gutted fish isolate and surimi from fish muscle, as reflected in SDS-PAGE. Nevertheless, the whiteness of the samples recovered with pH-shift process was quite lower than the muscle surimi which reveals the necessity of more research in this area.    

Volume 4, Issue 8 (Fall & Winter 2018)
Abstract

Over time, the words change meaning. According to linguistic studies, the most important types of this semantic change are: semantic generalization, semantic appropriation, metaphor and semantic degradation or promotion. This rule also applies to the vocabulary of Arabic; and some of the terms used in the Quran have undergone a semantic transformation. Unfortunately, a number of contemporary Persian translators have neglected this and translated some of the terms in the common and contemporary meaning. This function can seriously damage the Quranic concepts. Since the main religious teachings of the Muslims are taken from the Quran, the slightest error should not occur in the transfer of Quranic concepts to another language. Since some Quran translators have failed to do so in some cases, we have reviewed the errors found in some translations. With the search method in the sources of the vocabulary and the interpretation of the old period, and contemporary dictionaries, we will show the semantic change brought to some Quranic words. Twelve words that have undergone a semantic change have been investigated in 29 Persian translations of the Qur'an and it has been concluded that some translators mistakenly translated those words into contemporary sense.



Volume 4, Issue 15 (6-2007)
Abstract


 Abdollahian.H.,PH.D.
Abstract
 
There are, still, many unmentioned subjects in the Persian rich literature, deserving careful consideration and discussion. Line-story is a fictional form that has been exercised in Persian poetry from the ancient periods up to now. As far as the writer knows, this form has not been examined up to now, while it is worthy of paying attention as a kind of fictional form, having special features. Line-story, as its name indicates, is a complete story which is narrated in one line and has the essential elements of a story. Considering the fact that it is not possible to elaborate a story within a line, the fundamental narrative features should be recognized. As the sources reveal, plot, character, action, time and place are the basic components of a story, and each line, having these elements, can be considered as a line-story as well. To give some examples to support his argument, the writer has found 22 line-stories in both old and contemporary Persian poetry. The techniques for developing plot, character, action, time, place and atmosphere are studied in this tiny form as well. Line-story, on the one hand, is like Japanese Haiku because of its brevity, and on the other hand, it is close to the American Minimalism due to succinctness and avoiding description.
 
 

Volume 6, Issue 11 (Spring & Summer 2019)
Abstract

Due to the formation of numerous translations of the Qur'an and the important role of translation in relation of all sections of society with the teachings of the Holy Qur'an, scholarly criticism of the translations of the Holy Qur'an has emerged as one of the areas of Qur'anic studies in contemporary period. The importance of research in this field is understood when we see translational errors leading to differences in the perceptions of the Qur'an among the general public. Studies of the criticism of the translations of the Qur'an have sought to establish a critical mechanism for evaluating the translations of the Qur'an and hence, it introduces the translators slip places. The present study, through a descriptive and critical analysis, has investigated " Assumming different words as one due to negligence " as one of the slips of the Persian translators of the Holy Qur'an. Enumerating different types of assumming different words as one due to negligence, the two types of " Negligence in diagnosing the root of the words"and “Negligence in pay attention to the differences between similar constructions” have introduced and gave them 12 examples. Statistical reports of translators' performance in the studied samples indicate that translations of Ansarian, Bahrampour, Safavid Mousavi Garmaroudi and Ali Akbar Taheri's have the lowest Negligence. On the other hand, the translations of Mohammad Ebrahim Boroujerdi (9 slips), Mohammad Kazem Arfa (7 slips), Ibrahim Ameli (6 slips), Mohammad Kazem Moezzi (6 slips) have had less success in staying away from Assumming different words as one due to negligence.



 

Volume 6, Issue 12 (Fall & Winter 2020)
Abstract

Translation of the Holy Qur'an is a way to establish a connection to Holy Qur'an for non-Arabic people, therefore analyzing and criticizing the translations of the Holy Qur'an is necessary to understand the merits and shortcomings of previous translations and to obtain a favorable translation. One of the common languages for the translation of the Holy Qur'an is the Russian language. Using a descriptive-analytical approach, this paper examines five prominent translations of the Holy Qur'an into Russian including the first verse of Surah Alaq by “Mohammed Nuri Usmanov”, “Valeria Prokhorova”, “Ignati Krachkowski”, “Elmir Kuliyev” and “Betsy Shidfar”. In this study, in addition to presenting a history of the translation of the Holy Qur'an into Russian, these translations were examined on the first verse of Surah Alaq, and their strengths and weaknesses were explained with reference to interpretive, literary, and historical evidence and finally, a relatively appropriate translation of the verse mentioned is presented in Russian language using the appropriateness of the verses in Surah Alaq.



Volume 8, Issue 1 (Winter 2019)
Abstract

In this study, the physical and mechanical properties of tragacanth film incorporated with different antioxidant compounds including Hypericum perforatum extract, Ferulago angulata extract and vitamin C 25% (w/v) were studied. Adding Hypericum perforatum extract, Ferulago angulata extract and vitamin C reduced the moisture content and the solubility of the tragacanth film (p<0.05). The lowest amount of the solubility was observed in the tragacanth film containing vitamin C (51.59%) and Hypericum perforatum extract (52.05%). The amount of water vapor permeability (WVP) decreased in the tragacanth film containing vitamin C (1.68±0.06×10-7 gs-1m-1Pa-1 ), and in the films containing extracts increased significantly (p<0.05). Adding both extract and vitamin C to the tragacanth film decreased the mechanical properties of the film. Also, the lowest amounts of opacity were observed in the tragacanth film and tragacanth film containing vitamin C 1.72 and 0.98, respectively (p<0.05). The lowest amount of light transmission was observed in the tragacanth film containing Hypericum perforatum and Ferulago angulata extract (p<0.05).


Volume 9, Issue 3 (8-2020)
Abstract

The aim of this study was to produce protein isolates from rainbow trout (Oncorhynchus mykiss) and to investigate its nutritional, structural, functional and sensory properties. Fish protein isolates were produced by pH change method using alkaline and acidic pHs (2.5, 3.5, 11 and 11.5). The extracted proteins were evaluated for nutritional value, and functional properties, sensory properties, color, and structural changes of proteins. The extracted proteins showed relatively high nutritional value in the amount of essential amino acids. The solubility, gelling and foaming capacity of the proteins depended significantly on its extraction pH. So that the percentage of solubility and foaming capacity of proteins extracted under alkaline conditions showed a higher rate than acidic conditions while the least gelation concentration was related to pH 11.5. Examination and comparison of color (L, a, b and whiteness) and sensory properties of isolated proteins showed that proteins at acidic pH had a brighter and whiter color and better sensory properties than those from alkaline pH. The change in pH caused extensive protein degradation as shown by FTIR and SEM. The above results showed that the protein isolated from rainbow trout waste has good functional and nutritional properties in alkaline conditions, while the sensory properties and color of acidic conditions showed better results.

Volume 10, Issue 2 (Spring 2019)
Abstract

The production of double haploid plants can be used as an effective method for plant breeding. In this research, in order to produce chickpea haploid plants, 1mm-long anthers of Bivanij cultivar containing the microspores at uni-nucleate stage were isolated from suitable buds (3mm in length) and exposed to different centrifuge (150g, 300g and 600g each for 3, 6 and 10 minutes) and electrical shock pretreatments (0, 100, 150 and 200V) in the 2ml microtubes containing 1.5ml of RM-IK medium. The treated anthers were then cultured in an EDM culture medium containing 10mg/l 2, 4-D and 10mg/l silver nitrate to induce callus and embryos. Results showed significant differences between different levels of centrifugation, different levels of electric shock and their interactions for the studied traits. The highest percentage of embryogenesis was observed in centrifuge pretreatments of 150g for 6 minutes, 300g for 3 minutes, 150g for 3 minutes in combination with 150V electrical shock, 300g for 6 and 10 minutes and combination of 150g centrifuge pretreatment for 3 minutes with electric shock of 200V, while the highest percentage of plant regeneration was obtained from centrifuge pretreatment of 300g for 6 minutes and also the combination of centrifuge pretreatment of 150g for 3 minutes with electric shock of 150V.


Volume 10, Issue 20 (Supplementary Issue (Tome 46)- 2006)
Abstract

Results of the studies done by the Soco - economic Research Division of the former ministry of agriculture [1, p. 3-82] in mid - 1990s indicate that weaknesses of management system in rural areas specially after the 1962 land reform have created a number of pathological problems in agricultural production and rural social relations. These weaknesses have also brought about damaging consequences to the country's development process and to the agricultural production of Iran villages. For this reason, this paper funded by Institute for Planning and Agricultural Economy, is an attempt to design a measuring tool (through transformation of socio - economic variables to mathematical elements in a universal formula) to measure the functions of rural management based on the economic activity of the village so that through a periodical application of the formula one can identify the weak points of the rural management and use the necessary variables to repair the weak points. In order to design this mathematical tool, we will first identify the factors that cause any fluctuation in effectiveness of rural management by using a theoretical and psycho - sociological approach and then we will classify these factors with an analytical model. This approach was empirically validated through an explorative study done in areas such as Shahmeerzad, Sargost of Bandar- Abbas, northern strip from Noor to Ramsar, Zarrin- dasht of Firuzkooh and rural areas of Shahroud and Kelardasht. The theoretical elements were then transformed to measurable variables along with their indicators. The operational precedence of this model and its formulae is that in the process of its application if any changes in socio - political, cultural and economic indicators occurs, one can replace the new indicators with the previous ones. So, this model and its measuring tools have a distinctive feature of being self- modifying and cannot be affected by elements of time, space, the geographical dimension of its application, or type of the economic activity of the village under consideration. Hence, after a tentative application of this model for a period of three to five years and after modification of its elements, it can be used in any socio - economic setting compatible with rural characteristics.

Volume 13, Issue 1 (4-2013)
Abstract

In this paper, the Meshless Local Petrov-Galerkin (MLPG) method is used to analyze the fracture of an isotropic FGM plate. The stress intensity factor of Mode I and Mode II are determined under the influence of various non-homogeneity ratios, crack length and material gradation angle. Both the moving least square (MLS) and the direct method have been applied to estimate the shape function and to impose the essential boundary conditions. The enriched weight function method is used to simulate the displacement and stress field around the crack tip. Normalized stress intensity factors (NDSIF) are calculated using the path independent integral, J*, which is formulated for the non-homogeneous material. The Edge-Cracked FGM plate is considered here and analyzed under the uniform load and uniform fixed grip conditions. To validate results, at first, homogeneous and FGM plate with material gradation along crack length was analyzed and compared with exact solution. Results showed good agreement between MLPG and exact solution.

Volume 13, Issue 13 (First Special Issue 2014)
Abstract

In this paper, exact closed-form solutions in explicit forms are presented to investigate small scale effects on the buckling of Lévy-type rectangular nanoplates based on the Reddy’s nonlocal third-order shear deformation plate theory. Two other edges may be restrained by different combinations of free, simply supported, or clamped boundary conditions. Hamilton’s principle is used to derive the nonlocal equations of motion and natural boundary conditions of the nanoplate. Two comparison studies with analytical and numerical techniques reported in literature are carried out to demonstrate the high accuracy of the present new formulation. Comprehensive benchmark results with considering the small scale effects on buckling load ratios and non-dimensional buckling loads of rectangular nanoplates with different combinations of boundary conditions are tabulated for various values of nonlocal parameters, aspect ratios and thickness to length ratios. Due to the inherent features of the present exact closed-form solution, the present findings will be a useful benchmark for evaluating the accuracy of other analytical and numerical methods, which will be developed by researchers in the future. Also, the present study may be useful for static and dynamic analysis of thicker nano scale plate-like structures, multi-layer graphene and graphite as composite or sandwich structures.

Volume 14, Issue 1 (4-2014)
Abstract

In this research, grey cast iron scraps were recycled into powders and were then used in combination with iron powder for producing iron based powder metallurgy parts. Design of experiments was conducted by response surface method for both the green and sintered parts. For the green properties, the parameters cast iron powder percentage and compaction pressure, and for the sintered parts, the mentioned parameters in addition to sintering temperature and sintering time were selected each in five levels as the input process parameters. Transverse rupture strength and elastic modulus were measured as the responses. Regression analysis and analysis of variance were used to investigate the effect of input parameters, develop the mathematical models and evaluate the validity of the models. Scanning electron microscopy and optical microscopy micrographs were provided to better understanding. The obtained results, in addition to determine the effects of the input parameters, demonstrated the adequate mechanical properties of the produced parts in industrial scales and the validity of the proposed models. Also, the proposed method demonstrated its good capability for estimation of elastic modulus of powder metallurgy parts.

Volume 14, Issue 7 (10-2014)
Abstract

In this paper, exact closed-form solutions in explicit forms are presented to investigate small scale effects on the transverse vibration behavior of Lévy-type rectangular nanoplates based on the Reddy’s nonlocal third-order shear deformation plate theory. Two other edges may be restrained by different combinations of free, simply supported, or clamped boundary conditions. Hamilton’s principle is used to derive the nonlocal equations of motion and natural boundary conditions of the nanoplate. Two comparison studies with analytical and numerical techniques reported in literature are carried out to demonstrate the high accuracy of the present new formulation. Comprehensive benchmark results with considering the small scale effects on frequency ratios and non-dimensional fundamental natural frequencies of rectangular nanoplates with different combinations of boundary conditions are tabulated for various values of nonlocal parameters, aspect ratios and thickness to length ratios. Due to the inherent features of the present exact closed-form solution, the present findings will be a useful benchmark for evaluating the accuracy of other analytical and numerical methods, which will be developed by researchers in the future. Also, the present study may be useful for static and dynamic analysis of thicker nano scale plate-like structures, multi-layer graphene and graphite as composite or sandwich structures.

Volume 14, Issue 11 (2-2015)
Abstract

In this research, the machinability of iron-recycled grey cast iron powder metallurgy parts is investigated. For this purpose, grey cast iron swarfs were transformed to powders by target jet milling method and were then used to prepare powder metallurgy parts in combination with commercial iron powder. Green compacts were prepared with the variables of cast iron powder percentage and compaction pressure. Design of experiments was conducted by response surface method for sintered parts with the variables of cast iron powder percentage, compaction pressure, sintering temperature and sintering time each in five levels. Regression analysis and analysis of variance were used to investigate the effect of input parameters, develop the mathematical models and evaluate the validity of the models. In the green section, machinability was qualitatively investigated in drilling. For sintered parts, machinability was evaluated by measuring the thrust and torque forces and the obtained surface finish in drilling. The obtained results certificated the accuracy of the extracted regression equations for predicting the machining properties of the parts. Also, the results demonstrated that the addition of jet milled grey cast iron improves the machinability of iron-based powder metallurgy parts.

Volume 15, Issue 11 (1-2016)
Abstract

In this paper, the effect of processing temperature on the elastic and viscoelastic properties including storage modulus, loss modulus and damping value of PVC/plain weave fiberglass composites laminates was investigated. For this, composite samples with [0/90]10 lay ups were produced in three different temperatures including 160 ᵒC, 200 ᵒC and 230 ᵒC using film stacking procedure. Firstly, the flexural strength and modulus of the samples were measured using three points bending test according to ASTM D790-07 standard. Then, viscoelastic properties of the samples were measured in the temperature range of 25 ᵒC up to 220 ᵒC using Dynamic Mechanical Thermal Analysis (DMTA) and the effect of temperature on the viscoelastic properties was studied. Also, the effect of fiber/ matrix impregnation quality on the thermal and dynamic properties of the samples was evaluated using optical microscope images. It was concluded that the temperature of 230 ᵒC is proper to achieve high quality impregnation, according to both DMTA and three points bending test. Also, it was seen that increase of processing temperature up to 230 ᵒC increases the storage modulus; however, processing temperature doesn’t affect the glass transition temperature of the samples.

Volume 16, Issue 2 (4-2016)
Abstract

Boiling heat transfer is one of the most applicable heat transfer processes within the industry. In this paper, the pool boiling heat transfer of Fe3O4 /water nanofluid (ferrofluid) in atmospheric pressure has been analyzed, experimentally. The nanofluid in this study, has been synthesized in a single step and retains high stability. The replication and accuracy of the testing machine has been studied for deionized water for three times, indicating an appropriate concordance with the literature. Considering different volume concentrations of the nanofluid has revealed that boiling heat transfer in high concentrations decreases with an increase of concentration, while it rises with the increase of concentration in low concentrations. Hence, boiling heat transfer coefficient in 0.1% volume concentration nanofluid has been measured to be the optimum value which increases up to 43%. The roughness of boiling surface was varied with the deposition of nanoparticles in various conditions of nanofluid concentration, and heat flux. It is noteworthy that in the present research, the effects of surface roughness changes due to nanoparticles deposition and the impact of passing time on boiling process have been investigated, for the first time. Therefore, several experiments have been designed in order to study the change of nanoparticles deposition due to the change of nanofluid concentration and boiling surface heat flux. The results indicate that boiling heat transfer of deposited surfaces at low heat fluxes decreases; while it rises at high heat fluxes.

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