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نشریه: 

جغرافیا

اطلاعات دوره: 
  • سال: 

    1396
  • دوره: 

    15 (دوره جدید)
  • شماره: 

    53
  • صفحات: 

    165-180
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1532
  • دانلود: 

    339
چکیده: 

شهرگریزی با تعاریف گوناگون در ادبیات پژوهش مطرح شده و تعریف آن بر افزایش جمعیت شهرهای کوچک(small cities)  در فرایند رشد و توسعه شهرها دلالت دارد. در این پژوهش، براساس داده های جمعیتی، مهاجرتی، آمدوشدهای روزانه (commuting) و محرک های مهاجرتی، سعی شده است با بهره گیری از روشی اکتشافی به بررسی پدیده شهرگریزی در منطقه کلانشهری اصفهان پرداخته شود. نتایج نشان می دهد که افزایش جمعیت در طی دورهای مختلف از شهرهای بزرگ به نفع شهرهای کوچک و خارج از محدوده کلانشهری تغییر جهت داده است. به صورتی که در فواصل نزدیک به شهر اصلی رشد جمعیت کمتری در طی دهه اخیر مشاهده می شود. با توجه به مهاجرت و اثربخشی مهاجرت  (migration effectiveness)بر جمعیت و همچنین محرک های مهاجرتی در منطقه می توان بیان داشت که عواملی مانند دستیابی به مسکن بهتر و شغل از جمله مهمترین محرک ها در افزایش جمعیت شهرهای کوچک در پیرامون شهر اصلی بوده است. همچنین کاهش آمدوشد روزانه جمعیت با فاصله گرفتن از شهر اصلی نشان می دهد که شهرهای با فاصله گرفتن از شهر مرکزی از استقلال عملکردی بیشتر برخوردارند. همچنین براساس مدل برگشت تمرکز  (polarization reversal)و بررسی فرایندهای تحولات جمعیتی در منطقه کلانشهری، تحولات جمعیتی از مرکز به پیرامون مشاهده می شود که در هر دوره به کاهش جمعیت شهر اصلی و افزایش جذب جمعیت در شهرهای کوچک منجر شده است. در مجموع می توان بیان داشت که منطقه کلانشهری اصفهان از یک مرحله شهرنشینی به مرحله شهرگریزی وارد شده است.

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

بازدید 1532

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesدانلود 339 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesاستناد 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resourcesمرجع 1
اطلاعات دوره: 
  • سال: 

    1403
  • دوره: 

    13
  • شماره: 

    4
  • صفحات: 

    103-118
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    38
  • دانلود: 

    15
چکیده: 

As a part of the human society, children have formed the future generation of every country, and the child's interaction with the surrounding environment requires his physical and mental development. Therefore, it is important to pay attention to the environment that promotes mental and physical development of the child. In order to check the suitable environment for children, the initiative of the child-friendly city has been taken into consideration. The general purpose of this research is to improve the status of two cities from the perspective of a child-friendly city and to identify the appropriate indicators of a child-friendly city and to make a comparative comparison in the two metropolises of Tehran and ISFAHAN. The current research is developmental in terms of the combined method and in terms of the goal, and it is based on library and documentary studies, field surveys and interviews. Yeoman-Whitney test was used to analyze the indicators. The results of the evaluation show that in the comparison of the two cities of Tehran and ISFAHAN in terms of the examined indicators (social and physical, economic, environmental, urban management and leisure), Tehran city in the variable of safety and protection with an average of 3.09 and ISFAHAN city in Participation and citizenship variables with an average of 3.22 have a favorable level. Although Tehran is in a better condition compared to ISFAHAN in other indicators, in general, both cities are far apart in terms of standard indicators, and suggestions have been made in this regard.

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بازدید 38

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اطلاعات دوره: 
  • سال: 

    1402
  • دوره: 

    11
  • شماره: 

    2
  • صفحات: 

    175-193
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    169
  • دانلود: 

    23
چکیده: 

ABSTRACT The purpose of this research is to compile effective scenarios for improving the resilience of new Habitations in ISFAHAN. This research is applied in terms of purpose and in terms of method; it is a combination of documentary and survey methods and future research. Investigations have shown that based on possible situations, 10,040 scenarios have been identified to study the resilience of new Habitations in the Metropolitan ISFAHAN ISFAHAN against the risk of earthquakes. Of these scenarios, 9999 weak scenarios, 36 high compatibility or believable scenarios and 5 strong scenarios have been identified. Thirty-six scenarios with high compatibility can be divided into four groups according to their proximity, and each group includes several scenarios with almost common characteristics despite the small difference in one or more situations among the 15 key factors. These four groups represent the general framework of the situations governing the future resilience of the studied habitations. According to the results of the examination of different groups of scenarios in this research, scenario number 1 in the first group of scenarios has been introduced as a favorable scenario due to having favorable and complete conditions. Also, among the key factors studied, the collective justice factor, with an average of -4 and a total score of -144, is the most critical key factor in the studied scenarios   Extended Abstract Introduction The inability to accurately predict the future, as well as the complexities of increasing change, has led researchers to take advantage of the emerging knowledge of future studies and bring the issue of foresight into the heart of planning activities and to predict scientific and technological developments.The appropriate effectiveness of today's decision-making is related to recognizing the future situation and how planners deal with it. Accurate knowledge of the future also depends on a suitable method for discovering the future. Today, with traditional planning methods, including outsourcing in the past, it is unlikely to generate reliable foresight in the medium and long term. Futuristic science approaches in planning to find the key factors and drivers of development in the planning space emphasize that in this way, the planner with the lever of control and management of the future to plan optimally for the future. In the urban area of ISFAHAN, the evolution of industry has played an important role in changing the economic structure and the emergence of a new hierarchy of residential areas and population concentration, especially in ISFAHAN. In order to overcome the problems caused by urban development, especially to reduce the housing problem and prevent population explosion, reduce the destruction of agricultural land, preserve the cultural texture and control construction, new habitations in ISFAHAN Metropolitan have been thought and built. Existence of numerous problems and issues, such as active faults with the ability to cause extensive human and financial losses, construction of high-level units outside the rules, weakness of infrastructure services such as medical centers, transportation, etc., extensive migration from inside and outside the province to these habitations, the establishment of heavy industries around these habitations, regardless of the characteristics of the structure, the high age of the building in some of the studied habitations, etc., has increased attention to the issue of resilience in these habitations. Given the importance of futurism has a significant impact on reducing the human and financial losses of human habitations, the question has been raised: What is the most desirable scenario to improve the resilience of new urban habitations in the ISFAHAN Metropolitan?   Methodology The present research is applied in terms of purpose and in terms of nature, based on the new method of futurology, analytical-structural. Interaction / structural analysis is a method for analyzing the possible occurrence of an issue in a predicted set. Judgments about the potential for interaction between the predicted topics can adjust the probabilities of this. In this study, using 87 variables in the form of 6 dimensions, the interaction of the studied variables has been analyzed, and finally, using the identified key factors, scenarios affecting the resilience of new urban habitations in ISFAHAN urban area have been developed.   Results and discussion In this research, 54 possible situations have been proposed for 15 key factors. The number of states of selected key factors is between 3-4 possible states for each factor. From a total of 540 possible situations in the table of scenarios with high compatibility in this research, 99 favorable situations (18.33 percent), 69 static situations (12.78 percent), 124 situations on the verge of crisis (22.96 percent), and 248 crises (93.45 percent). The results of the application of Scenario Wizard software in this research have shown that there are 10040 scenarios for studying the resilience of new habitations in ISFAHAN urban area against the risk of earthquakes, and it is possible to use this number of extracted scenarios to forecast the resilience of the studied habitations. It is not acceptable, and they can only be used statistically. The extracted scenarios can be categorized into three general sections as scenarios with strong compatibility, weak scenarios, and incompatible scenarios. Out of the 10040 scenarios obtained in this research, 9999 weak scenarios, 36 incompatible scenarios and 5 strong scenarios have been identified. In order to determine the optimal scenario among the strong scenarios, an action has been taken. According to the conditions governing the 3 mentioned scenarios, scenario number 1 can be introduced as the optimal scenario in this research because it has 100% suitable conditions.   Conclusion According to the grouping of compatible scenarios, selecting the best scenario from 3 scenarios should be done. As mentioned in the previous topics, the scenarios of the second and third groups cannot be considered and cited due to having many problems; therefore, they should be removed from the review cycle at this stage. The only remaining group of scenarios is the first group, or the group of golden scenarios, which is in the best condition in terms of desirability. Since there is only one scenario in the golden scenario group, scenario number 1 of this research can be introduced as a favorable scenario for the resilience foresight of new urban habitations in the ISFAHAN Metropolitan. By examining the situation of scenario number 1 in the table of compatible scenarios, this result has been obtained that out of 15 situations, the development of geographical perspectives, increasing the level of awareness about the seismicity of the place of residence, identifying and dealing with dangerous factors, population density of 0-70 people, improving the level of social participation of citizens, increasing the level of social justice among citizens, the dynamism and development of economic and social activities, the development of intellectual and financial support for economic activities, the development of social capital, the improvement of the level of compensation capacities, the greater role of people compared to centers government during an earthquake, reducing damage caused by an earthquake, improving the level of performance of city managers during an earthquake, having a strong urban information bank and a large urban distribution have 100% favorability.   Funding There is no funding support.   Authors’ Contribution Authors contributed equally to the conceptualization and writing of the article. All of the authors approved thecontent of the manuscript and agreed on all aspects of the work declaration of competing interest none.   Conflict of Interest Authors declared no conflict of interest.   Acknowledgments  We are grateful to all the scientific consultants of this paper.

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بازدید 169

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

Baghbani-Arani Abolfazl | Adavi Zohrab

اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    52
  • شماره: 

    2
  • صفحات: 

    83-95
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    165
  • دانلود: 

    20
چکیده: 

To investigate the effect of vermicompost, N fertilizer and their integration on growth, biological and essential yields oil and its components in two populations (Varamin and ISFAHAN), an experiment was conducted in a randomized complete block design with three replications in the field of ISFAHAN Medicinal Plants Research Center in 2016. Fertilizer treatments including 100% urea, vermicompost 33.3 and urea 66.6%, vermicompost 66.6 and urea 33.3%, 100% vermicompost and control treatment (without fertilizer) as the first factor and Varamin and ISFAHAN populations as the second factor were selected. The results showed that the interaction effects of nitrogen fertilizer and populations on all studied traits were significant. In both populations, nitrogen fertilizer improved height, biological and essential oil yields, content of essential oil compounds (d-Carvone and its yield, α-phellandrene and linalool; except p-Cymene and Limonene in ISFAHAN population). Since in medicinal plants, the quantity (biological yield) and quality (essential oil and d-Carvone; the most important ingredient and the highest amount of essential oil in this experiment), 66.6% vermicompost + 33.3% urea in Varamin population, was the best treatment in the experiment. In addition an in the direction of human health and sustainable agriculture, it is possible to reduce 33% of chemical fertilizers application and pollution; however, in terms of other essential oil contents (α-phellandrene, Linalool and p-Cymene), 100% vermicompost fertilizer treatment was superior in ISFAHAN population.

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بازدید 165

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اطلاعات دوره: 
  • سال: 

    1403
  • دوره: 

    786
  • شماره: 

    3
  • صفحات: 

    869-875
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    20
  • دانلود: 

    0
چکیده: 

مقاله پژوهشیمقدمه: پرتودرمانی، یکی از روش های اصلی درمان سرطان پستان است. عوارض دهان و حلق از جمله چالش های مهم در این درمان به شمار می رود. هدف از این مطالعه، مقایسه ی عوارض دهان و حلق در بیماران تحت پرتودرمانی با دو تکنیک کانونشنال (Conventional) و هایپوفرکشن (Hypofractionated) می باشد.روش ها: در این مطالعه تحلیلی- مقطعی، 70 بیمار مبتلا به سرطان پستان در سال 1403 در بیمارستان سیدالشهدا اصفهان مورد بررسی قرار گرفتند. بیماران به دو گروه پرتودرمانی کانونشنال (5000 سانتی گری در 25 جلسه) و هایپوفرکشن (4250 سانتی گری در 16 جلسه) تقسیم شدند. عوارض حلق و گلو در طول درمان و تا 60 روز پس از آن بر اساس معیارهای CTCAE V5 در هر دو گروه ارزیابی و مقایسه شد.یافته ها: یافته های این پژوهش نشان داد که بروز عوارض حاد دهان و حلق در گروه بیماران تحت پرتودرمانی کانونشنال به طور معنی داری بیشتر از گروه پرتودرمانی هایپوفرکشن بود (1/15 = P). به طور دقیق تر، شیوع عوارض با شدت متوسط (درجه 2) و شدید (درجه 3) در گروه کانونشنال به ترتیب 17/1 و 8/5 درصد و در گروه هایپوفرکشن 14/2 و 0 درصد گزارش شد. تحلیل داده ها حاکی از آن است که متغیرهای بالینی سن، شاخص توده ی بدن (Body mass index) BMI و دریافت همزمان شیمی درمانی نیز به طور معنی داری بر شدت عوارض دهان و حلق در هر دو گروه درمانی تأثیرگذار بوده اند (0/05 > P).نتیجه گیری: در این مطالعه ی بالینی از نظر بروز عارضه نشان داده شد که بیماران تحت پرتودرمانی با تکنیک هایپوفرکشن عارضه ی حلق و گلو کمتری نسبت به درمان با تکنیک کانونشنال برخوردارند.

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اطلاعات دوره: 
  • سال: 

    1392
  • دوره: 

    1
تعامل: 
  • بازدید: 

    1065
  • دانلود: 

    197
چکیده: 

آبدزدک، Gryllotalpa ISFAHAN یکی از آفات مهم خاکزی است که باعث صدمه به ریشه ی گیاهان به خصوص چمن می شود. در این پژوهش، اثر دو گونه از نماتدهای انگل حشرات شامل Steinernema carpocapsa و Heterorhabditis bacteriophopra بر کاهش جمعیت آبدزدک ها بررسی های آزمایشگاهی انجام گردید. ...

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

بازدید 1065

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مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
اطلاعات دوره: 
  • سال: 

    1403
  • دوره: 

    786
  • شماره: 

    3
  • صفحات: 

    876-883
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    21
  • دانلود: 

    0
چکیده: 

مقاله پژوهشیمقدمه: هدف از این مطالعه، ارزیابی سطح سرب خون در بیماران مبتلا به دژنراسیون ماکولا وابسته به سن (Age-related macular degeneration ) AMD بود.روش ها: این مطالعه ی مورد- شاهدی، بر روی بیماران مبتلا به AMD و افراد سالم در شهر اهواز استان خوزستان در ایران انجام شد. گروه شاهد به صورت تصادفی از کلینیک سرپایی عمومی انتخاب شدند. دو گروه برای پارامترهای زیر همسان شدند: سن، جنس، مصرف سیگار، پروفایل لیپیدی، بیماری های عروقی گذشته و سابقه ی جراحی چشم.یافته ها: 95 بیمار  AMDمرد (55/8 درصد مرد با میانگین سنی 10/17 ± 69/93 سال) و 95 مورد گروه شاهد (31/6 درصد مرد، میانگین سنی 7/65 ± 65/50 سال) وارد مطالعه شدند. میانگین سطح سرب خون در گروه مورد و شاهد به ترتیب 70/08 ± 25/10 و 74/9 ± 24/25 میکروگرم در دسی لیتر بود (0/46 = P). همچنین پس از تعدیل عوامل مداخله گر، بین سطح سرب خون دو گروه تفاوت معنی داری مشاهده نشد (0/4 = P).نتیجه گیری: بین بیماران مبتلا به AMD و گروه شاهد، تفاوت معنی داری در سطوح سرب خون که نشان دهنده ی مواجهه ی کوتاه مدت است، مشاهده نشد.

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عنوان: 
نویسندگان: 

اطلاعات دوره: 
  • سال: 

    2017
  • دوره: 

    7
  • شماره: 

    1
  • صفحات: 

    43-48
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    146
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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

بازدید 146

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نویسندگان: 

اطلاعات دوره: 
  • سال: 

    2012
  • دوره: 

    8
  • شماره: 

    8
  • صفحات: 

    1122-1128
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    142
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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

بازدید 142

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اطلاعات دوره: 
  • سال: 

    2015
  • دوره: 

    22
تعامل: 
  • بازدید: 

    155
  • دانلود: 

    0
چکیده: 

INTRODUCTION: WITH RESPECT TO THE MUSCARINIC RECEPTORS IN THE RAT ILEUM IN THIS STUDY THE EFFECT OF CARBACHOL (MUSCARINIC RECEPTOR AGONIST) AND SCOPOLAMINE (MUSCARINIC RECEPTOR ANTAGONISTS) OF THE RECEPTORS ON THE ILEUM CONTRACTIONS ADULT MALE RATS WERE STUDIED…

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بازدید 155

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