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Issue Info: 
  • Year: 

    2018
  • Volume: 

    26
  • Issue: 

    4
  • Pages: 

    286-293
Measures: 
  • Citations: 

    0
  • Views: 

    479
  • Downloads: 

    0
Abstract: 

Introdution: Ischemic mitral regurgitation (IMR) remains one of the most complex and unresolved aspects of ischemic heart disease that the impact of percutaneous coronary intervention (PCI) on improvement of intensity of ischemic mitral regurgitation is not well clarified. Patients with coronary artery diseases and ischemic mitral regurgitation have a worse prognosis than the patients with coronary artery disease (CAD) and those without ischemic mitral regurgitation. We sought to investigate the impact of complete revascularization by percutaneous coronary intervention PCI on improvement of IMR in patients with CAD and comparisons of echocardiography indices in patients with and without improvement of ischemic mitral regurgitation. Methods: In this cross sectional retrospective study, echocardiographic reports in pre-percutaneous coronary intervention time and 12 months after PCI of patients with moderate (≥ 2+) ischemic mitral regurgitation who underwent complete revascularization by percutaneous coronary intervention from Farvardin 1391 to Esfand 1393 were included in the study. Then, echocardiographic data of the patients with improved ischemic mitral regurgitation compared with the patients with non-improved ischemic mitral regurgitation. Results: Comparison of echocardiographic indices before and after percutaneous coronary intervention revealed that after percutaneous coronary intervention (P = 0. 002) in 15 patients (16%), improvement in ischemic mitral regurgitation was occurred. Also, left ventricular ejection fraction (P = 0. 010), left ventricular end-diastolic (P = 0. 003) and end-systolic diameters (P < 0. 001), wall motion score index (P = 0. 003), left atrial area (P = 0. 001) and systolic pulmonary artery pressure (P = 0. 046) in pre-percutaneous coronary intervention echocardiography were different between improved and none-improved IMR group. Conclusion: Although, percutaneous coronary intervention can lead to improvement of ischemic mitral regurgitation but most patients did not show improvement of ischemic mitral regurgitation after percutaneous coronary intervention. The structural abnormality of left ventricle and atrium were different between improved and none-improved IMR group.

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

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Author(s): 

Journal: 

JOURNAL OF HEART

Issue Info: 
  • Year: 

    1398
  • Volume: 

    95
  • Issue: 

    -
  • Pages: 

    1343-1349
Measures: 
  • Citations: 

    1
  • Views: 

    213
  • 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: 

    2007
  • Volume: 

    65
  • Issue: 

    12
  • Pages: 

    84-90
Measures: 
  • Citations: 

    0
  • Views: 

    718
  • Downloads: 

    0
Abstract: 

Background: Despite recent improvement in coronary intervention, there are many controversies about its results in diabetic patients. The goal of this study is comparison of in hospital outcome of diabetics after coronary intervention with nondiabetics.Methods: In this study 115 diabetic and 115non diabetic patients who admitted for coronary intervention in our center during 1383&84 were entered in an analytic study of Cohort type. Datas about clinical, aniographic, procedural and post procedural (24hours) characteristics were entered in each patient’s form. Independent T test,chi-square and Fisher’s exact test were used for analyzing datas.Results: The Diabetic Patients were most often older men, and they had higher angina class, more co-risk factors and lower ejection fractions. Diabetic’s lesions were longer and more located in proximal portion of vessels. But success rate, major complication (death, revascularization, Q Wave MI and CVA), and minor complications (coronary/peripheral arteries complication, pulmonary edema, ischemic ECG) had no significant differences between two groups.Conclusion: Diabetes mellitus does not affect short outcomes of coronary intervention as an independent factor. So intervention could be done in these patients with considering favorable outcomes.

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: 

    11
  • Issue: 

    2
  • Pages: 

    133-152
Measures: 
  • Citations: 

    0
  • Views: 

    232
  • Downloads: 

    30
Abstract: 

ABSTRACT The attention of contemporary planners to environmental factors and increasing awareness and communication of man with his surrounding environment has increased the layers and defining factors of design and planning concepts. In such a way, a common problem with the issue of environmental capabilities to respond was put in front of the planners. The collection of ideas presented in this era was in the form of responsive planning, focusing on the maximum use of environmental capabilities. The necessity of the emergence of a comprehensive discourse to overcome the plurality of factors, definitions and design methods in the environmental fields has been given less attention. Based on this, the current research aims to organize the leading theories in this field in a targeted manner and seeks to improve them based on their synergy. The structural question of this research is the meanings, examples and meaningful contexts of flexibility in various aspects and scales of urban planning. The research method used is qualitative thematic analysis with the help of artificial intelligence in MAXQDA software in a 6-step processing process. The important application of this research is to structure the minds of the planners of this field to reduce the scattered and interdisciplinary problems of the resources. The results of this research revealed dimensions such as identification and recognizability, diversity and changeability, adaptability and expandability, distribution, separation and continuity, organization and compatibility in the field of flexibility and related to the corresponding parts in urban planning   Extended Abstract Introduction Responsiveness-based design and planning emphasizing the maximum use of environmental capacities to meet users' needs implicitly cause a targeted improvement of environmental quality. As the environmental awareness of contemporary man has expanded and the platforms have become more diverse, many challenges are raised in the field of environment-oriented in the field of infrastructure quality and service provision. Urban developments and new developments in cities should be interpreted with integrated conceptualization. The conceptualization of interpretive flexibility in the planning and designing of public spaces in the city is used as an interdisciplinary perspective in urban space design to open and discuss its connection and potential as an approach to strengthening social cohesion and inclusion. The general definition of flexibility is that it can create places with new forms of meaning and be used for different groups to strengthen its coherence and multidisciplinary inclusion in terms of design and planning of space and body. On this basis, the concept of flexibility is proposed as a principle in the context of design and planning due to its wide range of effects on background phenomena. The history of such a role can be seen in the diversity of users' needs. In such a way, it is impossible to express the specific time and area of the need to pay attention to this concept. This is in line with Oldenburg's theory of "social public spaces," in which being in public space, communicating with people and the environment through observing the streets, sidewalks, squares, and parks of the city is a necessary step for people as a part of their social life. The meaningfulness of the design of the artificial environment was considered. In any case, in the contemporary era, on the one hand, at the same time as the quantitative and qualitative increase of human environmental awareness, there is no longer any phenomenon in the eyes of contemporary man arising from a unique aspect and range of factors. On the other hand, his life needs in the individual and collective dimensions have seen a high diversity, which has led to the formation of multiple semantic domains of past flexibility. The meaning of flexibility in such an interdisciplinary platform and basic design refers to the concept of understanding and responding quickly and efficiently to environmental changes. Such a holistic definition for this broad field of environmental design means the implicit acceptance of the role of scale in the meaningful domain of these concepts. On a macro scale, it means making design options to increase the presence, participation, and power of choices of users of the environment in participatory urban planning and design methods, and on a small scale, it means making design options to increase spatial quality and, as a result, the quality of activities. The daily activities of environmental users are through selection against the "dominant space." Flexibility at different scales is crucial for dimensional optimization, shaping, and structuring spatial features, leading to improved performance of space components and spaces. The development of the concept of "flexibility" from various studies in metropolitan to micro scales, such as interior architecture, allows it to pass the discourse of responsiveness to provide a broad approach to environmental design in which different values, interests, and priorities are prioritized. As a result, the issue of flexibility in environmental design has been raised as a multi-dimensional field in the design and planning of the basic environment. The breadth and complexity of this concept have made the researchers of this field deal with it in one or more ways, and it has been avoided to provide a comprehensive framework about the nature and structuring processes. The current research presents a structured view of flexibility in architecture and urban planning with an environmental approach.   Methodology The methodology to achieve this goal is to use the macro research method and achieve a comprehensive framework by combining categorized interpretations. In such a way that by sorting and categorizing these concepts and bases in a new way, he has found a new level of theoretical findings, which will be a suitable answer for the gaps in scientific knowledge and scientific methods created in this field. In this context, the research method "thematic analysis" has been used with a qualitative approach and the use of library resources. Also, to overcome the breadth and complexity of these concepts and the multi-layer networking of concepts in this research method, artificial intelligence has been used in MAXQDA research assistance software.   Results and discussion In the meantime, attention should also be paid to the fields of influence and application of the results of this research because designers refer to flexibility as the creator of environmental qualities, including dynamism. Also, since flexibility, along with the principles of readability and adaptability, affect the lifestyle and behavioral patterns of the audience of environmental design in architecture and urban planning, it will also be effective in dealing with the challenge of complexity in environmental design factors. One of the key questions for achieving research goals on this issue is how flexibility in environmental design impacts the relationship between flexibility and scale.   Conclusion The most important finding of this research suggests that first, it requires a focus on the conditions under which the processes of perceiving human abilities and discovering the needs of the human audience can manifest. The theoretical framework arises from a comparative approach between design disciplines. These conditions are independent of the final state of the design product, and strengthening the environmental capacities will lead to a direction and an area that includes environmental flexibility. By responding to new situations, the construction of the space and the body within a space building can be adapted to various configurations. Even though the environment may remain constant, the designed place will continue functioning as a strong living system over time.  It also seems that the nature of issues related to flexibility has complexity. Considering that the quality of flexibility in urban planning and architecture is significant in multilevel and multifaceted scales from micro to macro, it is important to pay attention to the scale of different variables. In order to reduce this problem, the consistency and adjustment of the scale of the variables measured in a specific analysis should be considered in the first step.   Funding There is no funding support.   Authors’ Contribution All of the authors approved the content of the manuscript and agreed on all aspects of the work.   Conflict of Interest Authors declared no conflict of interest.   Acknowledgments We are grateful to all the scientific.

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Issue Info: 
  • Year: 

    2024
  • Volume: 

    14
  • Issue: 

    3
  • Pages: 

    96-109
Measures: 
  • Citations: 

    0
  • Views: 

    4
  • Downloads: 

    0
Abstract: 

In this study, weather conditions such as air humidity, temperature air, and wind speed were investigated in relation to wind turbine efficiency with the approach of an exergy study. In this study, the wind speed has been investigated in two different climatic regions of Iran with an approximate distance of 1200 km, in the names of Ardabil and Marvast. The amount of wind density of Ardabil is equal to 66 (kW/m2) and Marvast is equal to 123 (kW/m2). Power production using a 10 (Kw) wind turbine in the Ardabil region is 2.3 (MWh) and in the Marvast region is 3.2 (MWh) per year. The highest wind turbine exergy efficiency is 0.48 in the Ardabil region, and the highest exergy efficiency in the Marvast region is 0.18. The amount of reduction of CO2 gas production, using wind turbines in comparison to gas and diesel power plants in Ardabil, are 1.1 and 2.1 tons and in Marvast are 1.5 and 2.9 tons per year. This reduction in CO2 greenhouse gas per year is equal to using a forest region of 1000 (m2) to 3000 (m2). The use of wind turbines reduces the fuel consumption of diesel power plants in the Ardabil region for the amount of 797.4 liters and in the Marvast region for the amount of 1244 liters of diesel per year. According to this review, it can be concluded that in addition to wind speed, air humidity plays a significant role in the selection, installation, and commissioning of wind turbines in the region. According to this survey, it can be seen that in the Ardabil region, the wind speed of the wind turbine has a higher exergy efficiency than in the Marvast region, and it can be concluded that the wind turbine has performed better in the Ardabil region.

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

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Issue Info: 
  • Year: 

    1384
  • Volume: 

    3
Measures: 
  • Views: 

    850
  • Downloads: 

    0
Abstract: 

طی دهه گذشته عدم انجام مطالعات ارزیابی محیط زیستی برای پروژه های عمرانی و توسعه ای کشور بعنوان یک چالش اساسی از اهمیت قابل تاملی برای سیاستگزاران مرتبط با صنعت و محیط زیست برخور دار گردید و در نتیجه آن، الزامات متعددی جهت انجام این مطالعات در زمان آغاز پروژه های جدید در بخشهای مختلف ایجاد شد. این اقدامات ضمن ایجاد پتانسیل مناسب برای پیشگیری از پیامدهای منفی، نیازمند ایجاد ظرفیت های جدید در حوزه های مهندسی و مدیریت محیط زیست در بخشهای مختلف کشور می باشد و بنظر می رسد موفقیت این حرکت در گرو ایجاد سیستم هوشمند و یکپارچه پایش محیط زیستی و نظارت بر تعهدات مندرج در این مطالعات برای زمان احداث و بهره برداری خواهد بود.دومین چالش اساسی در زمینه عملکرد محیط زیستی صنایع و معادن، واحدهایی می باشند که در حال حاضر موجود و در حال بهره برداری هستند و برای آنها این مطالعات و یا اساسا هیچگونه مطالعه محیط زیستی صورت نپذیرفته و بالطبع مشخص نخواهد بود که حجم پیامدهای بالفعل و بالقوه محیط زیستی این واحدها به چه میزانی است و آنها چگونه باید در مسیر اصولی کنترل و پایش محیط زیستی قرار گیرند.در این مقاله ضمن مروری بر وضع موجود، نقاط قوت و ضعف و همچنین فرصت ها و محدودیتهای این چالش مورد تجزیه و تحلیل قرار گرفته است. سپس با توجه به اینکه انجام ارزیابی در این مقوله از یکسو نیاز به سرعت و دقت و امکان اجرای حداقل یکبار در سال می باشد و از سوی دیگر بدلیل تعداد بسیار زیاد واحدهای صنعتی و معدنی فعال و تنوع ابعاد و فعالیت آنها و علاوه بر آن پیامدهای مستقیم و غیر مستقیم اقتصادی این مساله برای واحدها و کشور، نیازمند ارایه یک مکانیسم جدید ارزیابی دارد، چارچوب کلی روش پیشنهادی برای عملیاتی نمودن این موضوع که نیاز همکاری مشترک بخش صنعت و معدن، سطوح مختلف سازمان حفاظت محیط زیست، انجمن های تخصصی محیط زیستی، دانشگاههای مرتبط، متخصصان صنعت و محیط زیست و شرکتهای مهندسی مشاور دارد با عنوان ارزیابی سریع محیط زیستی ERA ارایه گردیده است.

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

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Author(s): 

LIPPMAN S.A. | DONINI A. | DIAZ J.

Issue Info: 
  • Year: 

    2010
  • Volume: 

    100
  • Issue: 

    -
  • Pages: 

    216-223
Measures: 
  • Citations: 

    1
  • Views: 

    115
  • Downloads: 

    0
Keywords: 
Abstract: 

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

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Author(s): 

KARAMI SAMIRA | MAROFI MARYAM

Issue Info: 
  • Year: 

    2018
  • Volume: 

    25
  • Issue: 

    6
  • Pages: 

    505-508
Measures: 
  • Citations: 

    0
  • Views: 

    136
  • Downloads: 

    77
Abstract: 

Background: Due to the importance of sleep in brain development of infants, this study was designed to compare the effects of environmental and behavioral Interventions on sleep cycle of preterm infants in NICU. Methods: In this prospective crossover clinical trial, 40 preterm infants with fetal age of 32 to 36 weeks hospitalized in NICU were selected. Infants were randomly divided into the two groups of environmental-behavioral intervention and behavioral-environmental intervention, based on the order of the performed interventions. The study included three courses of control, first intervention and second intervention each held for 2 hours. Sleep states were assessed by Prechtl sleeping and waking assessment tool. Results: Mean of quiet sleep time in three different courses showed significant differences and in behavioral intervention course was more in comparison to the two other courses (p<0. 05). Mean of active sleep time in the behavioral course was significantly less than that in other courses. But, there was no significant difference between the control and environmental courses. Conclusion: Both behavioral and environmental interventions can increase total time of sleep and quiet sleep but behavioral intervention has more effect on quiet sleep. Therefore, infants sleep in NICU can be improved by behavioral interventions.

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: 

    2020
  • Volume: 

    72
  • Issue: 

    -
  • Pages: 

    0-0
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: 

    2024
  • Volume: 

    12
  • Issue: 

    1
  • Pages: 

    47-62
Measures: 
  • Citations: 

    0
  • Views: 

    154
  • Downloads: 

    4
Abstract: 

2Background and Objectives: Theory-based educational interventions are a logical approach in order to improve pro-environmental behaviors. This study was conducted with the aim of investigating the effectiveness of the educational intervention based on the extended theory of planned behavior on pro-environmental behaviors in residents of Qazvin city. Materials & Methods: Using a multi-stage random sampling method, 120 citizens referring to Qazvin health care centers participated in a quasi- experimental study in 2022-2023. Targeted educational content was provided through what’s APP and online training (4 sessions) in the form of lectures and group discussions along with educational pamphlets and text messages for the experimental group. Data were collected before and 3 months after the Theory based education using demographic questionnaires, Pro-environmental Knowledge, moral commitment, Self- identity, TPB subscales, and pro-environmental behavior questionnaires, and were analyzed with SPSS 25.0 software and chi-square, independent and paired T-tests, ANOVA and ANCOVA were analyzed. Results: The mean of pro-environmental awareness (from 5.2±1.3 to 10.9±2.1), attitude (from 17.5±2.5 to 34.7±6.1), subjective norms (from 8.9±1.8 to 14.9±1.3), self-identity (from 8.8±1.7 to 12.7±2.1), moral commitment (from 10.9±1.4 to 15.0±2.1), behavioral control (from 15.7±1.6 to 24.9±3.5) and behavioral intention (from 7.4±2.2 to 11.2±9) significantly improved in the experimental group after theory based education (P<0.001). Also, the mean of pro-environmental behaviors improved significantly after controlling the effect of the pre-test variable in the experimental group (36.4±9.5 to 52.2±8.7, P<0.001). Conclusion: The implementation of educational interventions based on the extended theory of planned behavior can encourage pro-environmental behaviors in citizens by improving psychological factors.

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