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تعداد نتایج: 9248544 فیلتر نتایج به سال:
abstract governing was disorganized for years, when mongols attached to iran and it caused to clearing way for interference of mongols princes. dispatching of holaku to the west culminated in establishing iilkhanan government. holakus activities in destruction of abbaasis government and activities which shows his staying in iran, made force oulus juji to comparison against iilkhanis gover...
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
peace and national security protection and ironic solving of international conflicts become the preliminary foundation of the united nations charter and had been considered as the main responsibilities of the security council, after world war ii and the establishment of united nations organization. therefore, the security council enables to analyze every kind of conflicts and challenges which ...
The aims were to: (1) provide word recognition thresholds (WRTs) at 31, 43, and 61 months of age; (2) investigate developmental changes over time; (3) investigate the relationship between OME and WRT, and (4) investigate the relationship between WRT and hearing thresholds. Around 1000 children were tested longitudinally as part of the ALSPAC study, using an adaptive measure of word recognition ...
this research concentrates on the lithostratigraphy, biostratigraphy, microfacies and sedimentary environment of the asmari and gachsaran formations at southwest firuzabad. the thickness of the studied section in all 608.95 meters that 220.8 meters belong to the asmari formation and 387.95 meters belong to the gachsaran formation (champe and mol members). in the study area, the asmari formation...
واحدهای سنگی کرتاسه بالایی تا پالئوژن زیرین در استان خراسان جنوبی (شرق لوت) گسترش دارند. در این مطالعه پنج برش چینه شناسی سیلک، آرک شمالی، بین آباد، آرک جنوبی و کبوده به منظور ارائه مدل رسوبی نمونه برداری و مورد بررسی قرار گرفتند. در مجموع 26 رخساره در تمام برش ها شناسایی گردید که در جایگاه های مختلف یک پلتفرم کربناته از نوع رمپ از مناطق ساحلی تا رمپ خارجی نهشته شده اند. علاوه بر این برای برش ه...
Objectives For earlier detection of infectious disease outbreaks, a digital syndromic surveillance system based on search queries or social media should be utilized. By using real-time data sources, a digital syndromic surveillance system can overcome the limitation of time-delay in traditional surveillance systems. Here, we introduce an approach to develop such a digital surveillance system. ...
We conducted a study of 80 patients to evaluate the accuracy of a commercially available acoustic reflectometer in identifying the presence or absence of otitis media with effusion (OME). This device assesses bilateral tympanic membrane mobility and, by inference, middle ear status. We found that it was most accurate in patients with normal and grossly fluid-filled ears. We recommend screening ...
Conclusions: Once a week middle ear inflation over a 4-week period was efficacious in the treatment of OME in the shortterm but it did not provide satisfactory long-term benefits. Autoinflation may avoid the need for drugs or surgery for middle ear effusion and it may be considered as an alternative to the other choices of treatment of OME. However, further efficacy studies investigating the id...
This statement has been approved by the Council on Child and Adolescent Health. PEDIATRICS (ISSN 0031 4005). Copyright © 1987 by the American Academy of Pediatrics. screening by pure-tone audiometry be used as the primary method of detection of hearing loss in school children; (4) the impedance bridge not be used as a replacement for audiometnic screening, because it will not detect sensory neu...
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