نتایج جستجو برای: d case
تعداد نتایج: 1879484 فیلتر نتایج به سال:
ویتامین d ویتامین محلول در چربی و یکی از ویتامین های لازم برای بدن است .با توجه به نقش اساسی این ویتامین در مینرالیزاسیون استخوان های در حال رشد،کمبود این ویتامین موجب اختلال رشد استخوانی وبیماری های متابولیک استخوان از جمله راشیتیسم در نوزادان و شیرخواران ودر بزرگسالان موجب نرمی استخوان می شود و نیز می تواند خطر ابتلا به آسم،بیماری های قلبی،عفونت های تنفسی،دیابت،افسردگی،انواع سرطان ها و... را ...
Background: Vitamin D deficiency is a common disorder in elderly, previously suggested to be associated with cognitive impairment. This study was aimed to determine the association between 25(OH) vitamin D and cognitive impairment in the elderly. Methods: In this case-control study, 35 individuals who met criteria of cognitive impairment were examined against 35 individuals who did not have co...
Background and Objective: Seborrheic dermatitis is one of the most common inflammatory skin diseases that affect the sebaceous glands. Although the exact role of vitamin D in this disease is still not clearly understood, some studies have shown lower serum levels of vitamin D in seborrheic dermatitis patients. This study aimed to investigate the correlation between vitamin D deficiency and sebo...
We study the Lp-approximation problem (1 ≤ p < ∞) for infinitely differentiable d-variate functions with respect to the worst case error. In particular, we correct a mistake in the argumentation of Novak and Woźniakowski [2], who showed that the problem is intractable. The main ingredients are arguments from convex geometry, as well as a probabilistic calculation.
the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...
Background: Evidence suggests hypovitaminosis D is associated with increased risk of coronary artery disease (CAD) and its extent and related risk factors. However, some investigations have produced contrary results. Therefore, we aimed to evaluate the association between serum vitamin D levels and the severity of premature coronary artery involvement. Methods: This randomized prospective, cas...
The present study used Flow-3D to investigate the effect of installing netted collars with different shapes on bridge piers. The results showed that installing netted triangular, circular, square, and rectangular collars with a hole diameter of 0.1 (d/D) reduced scouring by 49.5, 52.2, 52.7, and 56.5 percent, respectively, compared to the case with no collars. A hole diameter of 0.15 (d/D) for ...
Background and Objective: Inadequate vitamin D (insufficiency and deficiency) has been reported as one of the most important factors that might contribute to the increased occurrence of pediatric LRTI. This study was carried out to find the rate of vitamin D deficiency in children with acute lower respiratory infections. Materials and Methods: This case- control study was implemented on 2 to 60...
Objective: Bladder cancer is one of the most common cancers in the world. In some studies, the vitamin D deficiency in these patients has been reported. Vitamin D deficiency may increase the risk of bladder cancer by interrupting bladder cell reactions against abnormal cells. Material and methods: In this case-control study, 226 patients with Gross Hematuria who referred to the urology clinic...
Background 25-hydroxy vitamin D [25(OH) VitD] deficiency is a highly prevalent condition, present in approximately 30% to 50% of the general population. A growing body of data suggests that low 25(OH) VitD levels may adversely affect cardiovascular health. The present study aimed to measure the serum levels of 25(OH) Vit D in Congenital heart disease (CHD) children compared to healthy children....
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