نتایج جستجو برای: barrier

تعداد نتایج: 89945  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1390

پنل های خورشیدی بخش کمی از تشعشع خورشید را به الکتریسیته تبدیل می کنند، قسمت اعظم تشعشع باقی مانده به گرما تبدیل شده و دمای پنل را افزایش می دهد. با افزایش دمای سلول فتوولتائیک، بازده کاهش می یابد. در این پایان نامه برای کاهش دمای ماژول فتوولتائیک، یک واحد گرمایی با سیال عامل هوا، ساختار مارپیچ و سطح مقطع مستطیلی طراحی و ساخته می شود. واحد گرمایی در پشت پنل نصب می شود و سیستم فتوولتائیک /گرمای...

Journal: :تحقیقات نظام سلامت 0
آذر طل دکتری تخصصی، گروه آموزش بهداشت و ارتقای سلامت، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران فرشته مجلسی استاد، گروه آموزش بهداشت و ارتقای سلامت، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران عباس رحیمی فروشانی دانشیار، گروه آمار و اپیدمیولوژی، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران داود شجاعی زاده استاد، گروه آموزش بهداشت و ارتقای سلامت، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران بهرام محبی استادیار، گروه قلب و عروق، دانشکده پزشکی، دانشگاه علوم پزشکی تهران، تهران ، ایران

background: psychological and behavioral domains are important in coping with type ii diabetes. this study was conducted to assess supportive and coping obstacles in living with type ii diabetes among patients who visited hospitals affiliated to tehran university of medical sciences (tums). methods: this was a cross-sectional study with 600 subjects who participated in the study. data collectio...

Journal: :jundishapur journal of health sciences 0
zahra khalili department of clinical affairs, ardabil university of medical sciences, ardabil, ir iran ali sadrollahi disaster and emergency medical service management center, department of clinical affairs, golestan university of medical sciences, gorgan, ir iran; disaster and emergency medical service management center golestan, department of clinical affairs, golestan university of medical sciences, gorgan, ir iran. tel: +98-9382626127 masoumeh hosseinian department of medical surgical nursing, trauma nursing research center, kashan university of medical sciences, kashan, ir iran negin masoudi alavi department of medical surgical nursing, trauma nursing research center, kashan university of medical sciences, kashan, ir iran

conclusions the influences of various facilities and barriers were different in the physical activity of elderly in kashan. the promotion of active life style should be a part of health care planning in elderly. background the supplements and decreasing the limitations are important for suitable physical activity. these factors are different in various environments. objectives the current study...

Bai, Lesaja, Mansouri, Roos, Zangiabadi,

 Many efficient interior-point methods (IPMs) are based on the use of a self-concordant barrier function for the domain of the problem that has to be solved. Recently, a wide class of new barrier functions has been introduced in which the functions are not self-concordant, but despite this fact give rise to efficient IPMs. Here, we introduce the notion of locally self-concordant barrier functio...

Journal: :علوم 0

in this research work, alpha particle detector is made using semi-insulating gaas. a surface barrier detector with a semi-insulating gaas substrate at room temperature with pressure of 10-4 torr under -particle radiation with 5.48 mev of am241 source, have been under investigation. energy resolution of 2 and 3 mm schottky diameter have been matured and compared with the effect of voltage varia...

Journal: :health in emergencies and disasters quarterly 0
mohammadkarim bahadori health management research centre, baqiyatallah university of medical sciences, tehran, iran. hamid reza khankeh department of health in disasters and emergencies, university of social welfare & rehabilitation sciences, tehran, iran. rouhollah zaboli health management research centre, baqiyatallah university of medical sciences, tehran, iran. mohammad raiszadeh department of surgery, school of medicine, baqiyatallah university of medical sciences, tehran, iran. isa malmir health management research centre, baqiyatallah university of medical sciences, tehran, iran.

background: coordination is a critical factor in successful organization and appropriate response to disasters. in this regard, a centralized coordination mechanism is the first step towards an effective, efficient, and sustainable response in order to be ensured of the short- and long-term recovery. thus, this study aimed to identify and prioritize the barriers and facilitators of coordination...

Journal: :نشریه پرستاری ایران 0
صغری کهنسال kohansal s شفیقه هرو آبادی heroabadi sh فاطمه دباغی dabaghi f پرویز کمالی kamali p

this field study was conducted  to investigate barriers to applying principles of management in wards of tehran university on medical science hospitals: head nurses' viewpoints .75 hednurses who  were working  in selected hospitals affiliated to tehran university of medical sciences. the data collection tool was a questionnaire that  it,s validity and reliability was obtained using content...

Journal: :iranian journal of basic medical sciences 0
christoph kellinghaus department of neurology, klinikum osnabrück, am finkenhügel 1, 49076 osnabrück, germany ali gorji institute of neurophysiology, university of münster, robert-koch-str. 115, 48149 münster, germany. department of neurology and department of neurosurgery, university of münster, albert-schweitzer-campus a1, 48029 münster, germany. shefa neuroscience center, khatam hospital, rashid yasemi st., valiasr ave, tehran, iran.

objective(s):protective effects of diuretics, particularly of hydrochlorothiazide (hct), for the development of seizure attacksepilepsy have been described in vivo. however, itsthe mechanism of action of hct is unknownneeds to be elucidated. materials and methods: extracellular field potentials were recorded from the ca1- and ca3-subfields of the hippocampus of rats. epileptiform discharges wer...

Journal: :مجله علوم اعصاب شفای خاتم 0
soheila seddighi student research committee, faculty of medicine, mashhad university of medical sciences, mashhad, iran

cerebral palsy (cp) is the most common motor disability in children, usually occurring during fetal development; before, during, or shortly after birth, or during infancy. cp takes place in about 2.1 per 1,000 live births .there is no exact reason but birth injury or inflammation of the central nervous system, infections and hypoxia are related risk factors of this disease. often, symptoms incl...

Journal: :iranian red crescent medical journal 0
ali sadrollahi msc geriatric nursing, faculty of medical surgical nursing, bandargaz branch, islamic azad university, bandargaz, ir iran zahra khalili msc geriatric nursing, khalkhal branch, islamic azad university, khalkhal, ir iran; msc geriatric nursing, khalkhal branch, islamic azad university, khalkhal, ir iran. tel: +98-9355980622 robab pour nazari ardabil university of medical sciences, ardabil, ir iran majid mohammadi iran university of medical sciences, tehran, ir iran maryam ahmadi khatir disaster and emergency medical service management center, department of clinical affairs, mazandaran university of medical sciences, sari, ir iran najima mossadegh department of clinical affairs, golestan university of medical sciences, gorgan, ir iran

conclusions decreasing barriers to physical activity among the elderly causes physical activities to increase; therefore, energy expenditure is increased. decreasing social and environmental problems for the elderly is effective in increasing physical activity and energy expenditure. results the average age among the study population was 67.6 ± 6.8 years median, and the interquartile range (iqr...

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