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Issue Info: 
  • Year: 

    2001
  • Volume: 

    11
  • Issue: 

    -
  • Pages: 

    3348-3348
Measures: 
  • Citations: 

    1
  • Views: 

    158
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2022
  • Volume: 

    1
  • Issue: 

    68
  • Pages: 

    109-128
Measures: 
  • Citations: 

    0
  • Views: 

    97
  • Downloads: 

    0
Abstract: 

Knowing the components of economic education provides the dynamic background of education in this field. The aim of the current research is to investigate the indicators and components of the economic education curriculum. The approach of the current research is qualitative and its method is research SYNTHESIS. The research community is all the articles (211 articles) that have been presented from 1390 to 1401 AD and from 2010 to 2022 AD regarding economic education in curricula. The sample of the research is 32 articles, which were selected based on thematic monitoring, theoretical data saturation, and purposefully. The research data were collected from the qualitative analysis of the studied articles. By analyzing the data, the dimensions of vitality in the curriculum of the elementary school in 4 factors and 55 categories including the dimension of individual factors (including indicators and components related to personality characteristics); The dimension of culture and economic ethics (economic fields in the society); The dimension of economic concepts and knowledge (indices in economic education) and the dimension of collective and communication concepts (communication and interaction indicators in education) were classified. Economic education is dependent on internal and external components in educational systems, which requires macro-planning in this field.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2017
  • Volume: 

    6
  • Issue: 

    3
  • Pages: 

    79-85
Measures: 
  • Citations: 

    0
  • Views: 

    1095
  • Downloads: 

    0
Abstract: 

In this study the effect of sintering parameters on the microstructure and electrical properties of the barium strontium titanate sputtering target is investigated. For optimizing the sintering temperature, BST compacts sintered at various temperatures ranging from 1200 to 1400 oC for 2 hours. The sintered Barium Strontium Titanate sputtering target comprising with a high density, purity and a fine-grained microstructure has been also fabricated. Optimized calcining and sintering condition was obtained by controlling sintering temperature and time to fabricate single phase, high relative density sintered body. A relative density of up to 95% and mean grain size of 8 μm were reached at the sintering temperature of 1250oC. The relative permittivity of thin films at 10 KHz was around 4400. Also the thin film bandgap was around 3.2 eV. The densities of the sintered samples were measured using the Archimedes method.Characteristics of the body were analyzed by X-ray diffraction (XRD), optical microscopy. Dielectric permittivity (er) were measured with an HP 4192A impedance analyzer and thin film bandgap was analyzed by UV-Vis method.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    1387
  • Volume: 

    1
Measures: 
  • Views: 

    1296
  • Downloads: 

    0
Abstract: 

متان یکی از منابع اصلی انرژی و از اجزای اصلی گاز طبیعی است. تبدیل متان به عنوان یک گاز گلخانه ای به SYNTHESIS-gas (H2CO) و هیدروکربن های با ارزش بالاتر متان را تبدیل به یک محصول ارزشمند و بدون اثر گلخانه ای می کند. همچنین syngas تولید شده می تواند به سوخت های مایع و ترکیبات شیمیایی با ارزش توسط فرایند Fischer-Tropsch تبدیل شود. بهینه سازی متان با اکسیژن به syngas یکی از روش های این تبدیل است. در بین روشهای موجود یکی از روش های مطلوب، تبدیل پلاسمایی متان است که در آن دما بر خلاف روش های کاتالیستی بالا نیست. در این مطالعه، یک راکتور پلاسمایی به جای روش های کاتالیستی رایج برای تولید syngas طراحی و آزمایش می شود. راکتور پلاسمایی شامل منبع پلاسمای مایکروویو، لوله گازی، سرد کننده و قسمت نمونه گیری برای تولید موثر syngas از متان، اکسیژن و آرگون می باشد. آزمایش ها توسط یک سیستم غیر کاتالیستی و تحت فشار اتمسفر انجام می شود. توان منبع پلاسمای مایکروویو در گستره 100 تا 300 وات ثابت نگه داشته می شود. پس از آن که گاز تولید شده از قسمت سرد کننده عبور می کند، مخلوط گاز سنتز شده توسط سرنگ گازی، GC “Gas Cromatography” و یک سل گازی برای آنالیز FT-IR”Fourier Transform infrared Spectroscopy” جمع آوری می گردد. بهینه کردن شرایط انجام واکنش به کمک تغییر فشار جزیی گازهای ورودی، زمان انجام واکنش گازها و تغییر توان منبع مایکروویو مورد بررسی قرار می گیرد.

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

Issue Info: 
  • Year: 

    2022
  • Volume: 

    202
  • Issue: 

    -
  • Pages: 

    113974-113974
Measures: 
  • Citations: 

    1
  • Views: 

    23
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2021
  • Volume: 

    12
  • Issue: 

    2
  • Pages: 

    33-74
Measures: 
  • Citations: 

    0
  • Views: 

    232
  • Downloads: 

    28
Abstract: 

Abstract: This study sought to answer the question of what are the causes of marital infidelity in the Iranian family. To Answer the Research Question, Qualitative Meta-SYNTHESIS (QMS) Method Were Used. Then, 78 Scientific Papers Which Were Considered Marital Infidelity in Iran were identified and were Analyzed. The results showed that the factors of infidelity in Iran can be classified into 9 main categories, including: 1. Social factors, 2. Psychological factors, 3. Cultural factors, 4. Family factors, 5. Personal factors, 6. Relational factors, 7. Economic factors, 8. Media factors, 9. Contextual factors. Each of the main Categories is divided into Different Subcategories. The Social Factors of infidelity were including “Infidelity Opportunities”, “Friend groups” and “Environmental Conditions”. Psychological Factors of Infidelity Were Including “Personality Type”, “Attachment Styles”, and their “Love Schema”. Cultural Factors have Pointed to “Change in Beliefs and values” and “the level of Religious Education” of people. The Family Factors were including “Inappropriate Marriage”, “Family Conflict” and “the Kind of Family Background of people”. The Personal Factors are “Sexual Dissatisfaction”, “Emotional Dissatisfaction”, “the Feeling of Loneliness”, “the Spouse Unavailability”, “Weakness in Controlling Spouse”, “Domestic Violence”, “Revenge of the Spouse” and “the Role of the Third Person in the Relationship”. The Economic factors are including “the Economic Status of the person”, “the Role of Economic Problems”, “the motivation of entering into infidelity under the Pretext of Job promotion”. The media Factors Were Emphasized on “weakening Iranian Values through Social Media Networks and Foreign Satellite Channels” and “Producing of New Needs by Media”. Finally, the Contextual Factors were including the Role of “Age” and “Gender” in the Infidelity. Findings showed that Infidelity Occurred in the group of men and youth in Iran, more than other Social Groups.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

Ghaderzadeh Omid

Issue Info: 
  • Year: 

    2022
  • Volume: 

    13
  • Issue: 

    1
  • Pages: 

    5-42
Measures: 
  • Citations: 

    0
  • Views: 

    138
  • Downloads: 

    9
Abstract: 

Considering the importance of solidarity as a theoretical and political structure and its connection with social harmony, acceptability and political legitimacy, the present research has conceptualized and formulated the problem of solidarity in the context of Iran's multi-ethnic society through the mediation of existing studies. . In the current research, the hybrid method has been used. The sample and statistical population of the research includes selected qualitative studies that have investigated the issue of solidarity and its dimensions in Iran from different aspects and perspectives in the period from 1372 to 1398. After searching in different databases, 500 related articles, books and research reports were identified and finally 54 sources were selected to perform the meta-combination method. Based on the SYNTHESIS of studies, solidarity in the multi-ethnic society of Iran has found a problematic situation. The results of the research confirm that the coordinates of solidarity in Iranian society are based on structural contexts and conditions. The main field in which the issue of solidarity in Iran should be established is the acceptance of a reality called "reliability and stability of cultural diversity". Based on the meta-combination of studies, the coordinates of solidarity in Iran's multi-ethnic society, due to "intercultural affinities", "disruption and non-inclusion in ethnic policies", "instability and imbalance of development", "inefficiency of ethnic political management" and "identification disorder". In the meantime, "cultural globalization", "taking role models from ethnic elites", "geopolitics of ethnic areas and transnational interventions" and "ethnic extension" are considered as intervening conditions. Despite the fact that ethnic and religious diversity is recognized as a central sign in the constitution, with this definition, political agents have sometimes resorted to strategies that social suffering and extroversion has formed in ethnic communities.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2023
  • Volume: 

    17
  • Issue: 

    45
  • Pages: 

    72-89
Measures: 
  • Citations: 

    0
  • Views: 

    149
  • Downloads: 

    21
Abstract: 

In Kant and the Problem of Metaphysics (KPM), Heidegger shows how the initial image-making power of the imagination is pictorial in the pure image of time. He further clarifies the recognized link between the syntheses and the time-visualizing power of images which is pictorial formative power, which can visualize time. The three syntheses of imagination are replaced with the modes of existence of Dasein. Three kinds of photographs resemble the images produced when the transcendental imagination functions as Dasein. We can address the ways to visualize time by considering Dasein with a photographic preoccupation through 1. A possible look in the form of presentation (a photograph shows an immediate look of a house or person as intuitable this-here); 2. An immediate look of the thing, house, or deceased person, as well as a copy or its reproduction as a death mask; and, 3. The manner of contemplation of a likeness is an immediate look of a being present in the form of representation.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2019
  • Volume: 

    38
  • Issue: 

    1
  • Pages: 

    65-74
Measures: 
  • Citations: 

    0
  • Views: 

    525
  • Downloads: 

    0
Abstract: 

The SYNTHESIS of calcium tetraborate was investigated in a temperature ranging from 800℃ to 900℃ using the SOLIDSTATE reaction method. The SYNTHESIS was done using ammonium tetraborate tetrahydrate as the source of boron. At temperatures of 800 ℃ and 880 ℃ , the mixed phases from different compounds were formed. At the optimum temperature of 840℃ , the mixed phase was only composed of meta and tetraborate phases. A 2wt% excess of ammonium tetraborate tetrahydrate led to the calcium tetraborate phase formation. X-ray diffraction analysis (XRD) confirmed the monoclinic structure at the optimum temperature of 840℃ and by 2wt% excess of ammonium tetraborate tetrahydrate. Formation of BO3 and BO4 units in calcium tetraborate anionic group was tested by Fourier transform infrared (FTIR) and Raman spectroscopy. Elemental composition and morphology of the prepared sample were studied by Field emission scanning electron microscopy (FE-SEM). The stoichiometry of the prepared powders was almost the same as the theoretical amounts, and powder particles exhibited some monoclinic characteristics.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    2
  • Issue: 

    4
  • Pages: 

    505-508
Measures: 
  • Citations: 

    0
  • Views: 

    338
  • Downloads: 

    91
Abstract: 

In this paper, CuO nanoparticles have been synthesized via SOLIDSTATE thermal decomposition using copper(II) Schiff base complexes as new precursors at 6000C under air atmosphere for 3 h. Surface morphology of the products were characterized by Fourier transform  infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and scanning electron microscopy (SEM).

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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