نتایج جستجو برای: hertwigs root sheath
تعداد نتایج: 153555 فیلتر نتایج به سال:
Tooth root formation begins after the completion of crown morphogenesis. At the end edge of the tooth crown, inner and outer enamel epithelia form Hertwig's epithelial root sheath (HERS). HERS extends along with dental follicular tissue for root formation. Ameloblastin (AMBN) is an enamel matrix protein secreted by ameloblasts and HERS derived cells. A number of enamel proteins are eliminated i...
Soil erosion and sand movement is one of environmental threats of the desert areas and vegetation partially prevents the creation of this phenomenon. One of the most important species growing in Sabzevar desert plains and sandy dunes, regarding too dense canopy and their root density, which have a considerable impact on soil protection and prevent movement of sands, is Stipagrostis pennata. ...
Abstract Aims Biopores offer favorable chemical, biological and physical properties for root growth in untilled soil layers. There they are considered as nutrient “hotspots” with preferential growth. However, the literature lacks a quantification of metabolic activity due to acquisition main crops while growing biopore sheath. Methods A pot experiment was performed map roots, indicated by pH ch...
This paper studies the turbulent kinetic energy ($k_\perp$) in 2D isothermal electrostatic interchange-dominated ExB drift turbulence scrape-off layer and its relation to particle transport. An evolution equation for former is analytically derived from underlying equations. Evaluating this shows that dominant source due interchange drive, while parallel current loss sheath constitutes main sink...
هدف از این تحقیق، بررسی و مدلسازی ارتباط جنگل زدایی و متغیرهای انسانی – فیزیوگرافی ر جنگل های فلارد است. جنگل زدایی براساس کاهش درصد تاج پوشش جنگل با استفاده از تفسیر چشمی عکس های هوایی سال های 1334، 1346، 1376 و تصویر ماهواره ای سال 1387 انجام شد. رابطه ساده میزان جنگل زدایی و متغیرهای مستقل (عوامل توپوگرافی، نزدیکترین فاصله به جاده، نزدیکترین فاصله به مناطق مسکونی ، تراکم جاده، جمعیت) با استف...
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