نتایج جستجو برای: p ca8
تعداد نتایج: 1269723 فیلتر نتایج به سال:
43Ca nuclear magnetic resonance (NMR) spectroscopy has been extensively applied to the detailed study of octacalcium phosphate (OCP), Ca8(HPO4)2(PO4)4.5H2O, and hybrid derivatives involving intercalated metabolic acids (viz., citrate, succinate, formate, adipate). Such phases are importance in development a better understanding bone structure. High-resolution magic angle spinning (MAS) experime...
abstract in order to assess the availability of phosphorous (p), different methods have been proposed in the last decades. the results of these methods in soils with various ph, calcium carbonate, organic matter, al and fe oxides and hydroxides and other properties especially in iranian soils can not be used. in addition, knowledge about transformation of p forms is necessary for perception of ...
Calcium-containing crystal deposition diseases represent a group of clinically heterogeneous calcific diseases that are a significant source of morbidity.1 Phosphorylated carboxylic acids are powerful inhibitors of biological crystallization as it relates to those diseases.2 Phosphocitrate (PC), a naturally occurring compound (Chart 1),3 is particularly potent. It has been demonstrated to inhib...
رفتار شیمیایی فسفر در خاک تابعِ پیچیده ای از عوامل مختلف از جمله اکسیدهای آهن است. هدف این پژوهش بررسی تأثیر اندازه (نانو و غیر نانو) و غلظت ذرات اکسید آهن بر گونه بندی و فراهمی فسفر برای گیاه بود. پژوهش به صورت طرح آزمایشی فاکتوریل در قالب طرح پایة کاملاً تصادفی در چهار تکرار و پنج سطح اکسید آهن غیر نانو و پنج سطح اکسید آهن نانو (0، 500، 1000، 5000، 10000 mgkg-1) انجام پذیرفت. گونه بندی فسفر به ...
The biological basis for the development of the cerebro-cerebellar structures required for posture and gait in humans is poorly understood. We investigated a large consanguineous family from Turkey exhibiting an extremely rare phenotype associated with quadrupedal locomotion, mental retardation, and cerebro-cerebellar hypoplasia, linked to a 7.1-Mb region of homozygosity on chromosome 17p13.1-1...
Newly-formed nanometer-sized particles have been observed at coastal and marine environments world wide. Organic species have so far not been detected in those newly-formed nucleation mode particles. In this study, we applied the ultrafine organic tandem differential mobility analyzer method to study the possible existence of an organic fraction in recently formed coastal nucleation mode partic...
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