Effect of sunscreen on vitamin D

effect of oral presentation on development of l2 learners grammar

this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...

The effect of vitamin D supplementation on the size of uterine leiomyoma in women with vitamin D deficiency

Effect of Latitude on Vitamin D Levels.

Context Vitamin D levels have been linked to bone health and to numerous diseases; however, an element that lacks substantial direct data and limits the evidence basis regarding whom to screen for vitamin D deficiency is the effect of latitude on vitamin D levels. Objectives To determine whether latitude influences vitamin D levels and to investigate the influence of other factors that may af...

Effect of Vitamin D Therapy on Hashimoto's Thyroiditis in Children with Hypovitaminosis D

Background Hashimoto's thyroiditis (HT) is a common cause of thyroid diseases in children and the role of vitamin D (VD) is controversial. Therefore, the aim of this study was to investigate the influence of VD therapy on HT in children with hypovitaminosis D.<br...

the effect of explicit teaching of metacognitive vocabulary learning strategies on recall and retention of idioms

چکیده ندارد.