نتایج جستجو برای: سامانه 137
تعداد نتایج: 22285 فیلتر نتایج به سال:
The tooth structure preservation is the best way to postpone more invasive therapies. Especially in young patients more conservative techniques should be applied. Bonded porcelain veneers and even more the direct composite restorations, are the two therapeutic procedures that require the fewer sacrifice of dental tissue, finalized to the optimal recovery of aesthetic and functional outcome. Alt...
Background: There is some evidence suggesting a close relationship between polyunsaturated fatty acids (PUFAs) and renal inflammation and fibrosis, which are crucial stages in chronic kidney disease. Methods: To verify the role of PUFAs in renal fibrosis processes, we investigated the effects of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and arachidonic acid (AA) on the gene expres...
A range of individual nutrients and foods have been suggested to increase obesity risk in childhood, but the evidence is inconsistent. Dietary patterns that summarise the whole diet may, however, be more informative. The aim of the present paper was to systematically review the current evidence pertaining to overall dietary patterns in childhood and later obesity risk. Studies eligible for revi...
Volume 29, Number 3, May/June 1997 1980, the rate increased by 61% among adolescents, by 69% among women aged 20–24, by 67% among 25–29 year-olds and by 82% among women aged 30–34.2 Indeed, the rates for these latter groups have continued to rise since 1991, even as the birthrate among adolescents has stabilized and turned slightly downward. As a result of these trends, nonmarital births now ac...
1. Galilean Relativity and Newtonian Determinacy: 1/7/13 1 2. The Euler-Lagrange Equation: 1/9/13 3 3. Suddenly, Riemannian Geometry: 1/14/13 5 4. Examples of Natural Systems: 1/16/13 8 5. More on the Kepler Problem: 1/23/13 10 6. Rigid Bodies I: 1/28/13 12 7. Rigid Bodies II: 1/30/13 14 8. Rigid Bodies III: 2/4/13 15 9. The Legendre Transform and Projective Duality: 2/6/13 17 10. The Least Act...
ThehumanpregnaneX receptor (hPXR) is a xenobiotic-sensing nuclear receptor that transcriptionally regulates drug metabolism–related genes. The aim of the present study was to elucidate the mechanism by which hPXR is regulated through threonine-408. A phosphomimetic mutationat threonine-408 (T408D) reduced the transcriptional activity of hPXR and its protein stability in HepG2 and SW480 cells in...
A four year-old-girl with Diamond-Blackfan anemia (DBA) that was resistant to corticosteroid treatment and transfusion dependent underwent (bone marrow transplantation) BMT from HLA identical sibling. The patient was conditioned with busulfan and cyclophosphamide and achieved complete marrow engraftment and mixed chimerism in DNA analysis. For the following 13 months she was not transfusion dep...
بعد از حادثه چرنوبیل در سال 1986، تراکم بالای رادیونوکلئیدها در مواد غذایی و محیط اطراف گزارش شد و دیده شد که قارچ ها پتانسیل خوبی برای جمع آوری رادیونوکلئیدها در قسمت های خوراکیشان دارند و همچنین می توانند عناصر سمی که شامل رادیونوکلئیدهای طبیعی می باشند را نیز جمع آوری کنند. در ایران اطلاعاتی راجع به میزان رادیونوکلئیدهای طبیعی و مصنوعی در قارچ های خوراکی و وحشی وجود ندارد. هدف این مطالعه ان...
فرسایش بادی یکی از اصلی ترین فرآیندهای تخریب اراضی و یکی از جدی ترین مشکلات محیط زیست در مناطق خشک و نیمه خشک است. نسبت سطوح مناطق تحت تأثیر فرسایش بادی در ایران بیش از 6 برابر متوسط جهانی است. بنابراین کنترل فرسایش بادی در مناطق خشک ایران که مشکلات محیط زیست جدی دارند سخت است. در این تحقیق روش سزیم-137 برای محاسبه نرخ فرسایش بادی استفاده شد. سزیم-137 یک عنصر رادیواکتیو مصنوعی باتشعشع گاما و نی...
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