نتایج جستجو برای: اثر arch
تعداد نتایج: 169927 فیلتر نتایج به سال:
وجود تغییرات ساختاری در سریهای زمانی مالی از عواملی است که موجب میشود مدلهای خطی برای تحلیل این سریها مناسب نباشند. نادیده گرفتن این تغییرات در سطح میانگین و واریانس سریهای زمانی اثرات نامطلوبی روی تحلیلها خواهد گذاشت. در بسیاری از سریهای زمانی مالی و اقتصادی فرض ثابت بودن واریانس برقرار نیست که در این شرایط مدلهای خانواده اتورگرسیو ناهمواریانس شرطی میتوانن نتایج مطلوبی ارائه دهند. در ای...
Background For the flat foot deformity, the custom made foot orthosis supported medial longitudinal arch using the navicular pad. And we experienced many cases that addition the metatarsal pad which supported transverse arch of the forefoot was more effective treatments. However, the flexibility of the transverse arch in the flat foot deformity was unclear. The aim of this study was to clarify ...
Isolated atresia of the aortic arch is rare. In aortic arch atresia the arch is continuous, yet a segment of it is atretic so that apart from a collateral circulation, communication with the lower aortic segment is absent. Haemodynamically, the condition is similar to complete interruption of the aortic arch. To our knowledge only 10 cases of isolated aortic arch atresia or interruption have be...
Aortic arch anomalies refer to congenital abnormalities of the position or branching pattern, or both of the aortic arch. Although aortic arch anomalies are not uncommon, reports on their prenatal diagnosis are scarce. Insight into the hypothetical arch model is crucial to understanding anomalies of the aortic arch in the fetus. Recognition of the trachea, three major vessels, ductus arteriosus...
Introduction & Objective: The study of monozygotic twins is a valuable method for distinguishing the genetic and environmental etiologic factors. The purpose of this study was comparison between occlusal indices and dental arch dimensions in monozygotic twins. Materials & Methods: This descriptive study was preformed on 40 monozygotic twins that their permanent teeth were fully erupted. The ...
The objective of the present study was to comparatively analyze the clinical status of the lower limbs in healthy subjects and subjects with back pain. Forty three (43) male and female subjects with average age of 36.91± 3.97 were selected as the statistical sample of the study. This population was recognized intelligently by utilizing the Nordic Musculoskeletal Questionnaire (NMQ). Furthermo...
BACKGROUND AND AIM: Existence of developmental spaces during the primary dentition period is essential for the permanent dentition period and results in regular eruption of permanent teeth. The wide class of different occlusion and dental arch types during the primary dentition period, based on factors such as race, conducted to research the prevalence of these...
Introduction With the advancement in imaging technology, 3D dental computed tomography plays a very significant role in orthodontic treatment and diagnosis. Aim To evaluate dental crowding in relation to the mesiodistal crown widths and arch dimensions and also to determine the differences of dental crowding among males and females, in Southern Indian population. Materials and Methods A tot...
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