نتایج جستجو برای: p ca10
تعداد نتایج: 1269879 فیلتر نتایج به سال:
in the present work, the effect of ca(no3)2.4h2o and (nh4)2hpo4 primary solutions as the beginning materials in synthesis of a calcium phosphate phase, was examined. so, we investigated the wet chemical reactions in solution at different temperatures by a hydrothermal condition aimed at hydroxyapatite (ca10(po4)6(oh)2); (hap) synthesis. the powders were investigated by xrd,sem, fe-tem, hrtem, e...
information about forms of phosphorus (p) is important for the evaluation of p status in soil and also understanding of the soil fertility and plant nutrition. to obtain such information and to determine the relationship between the p forms from soil characteristics, amount of different organic and inorganic p forms of 20 soil composite samples of eastern azerbaijan province, iran were determin...
Hydroxyapatite (HA), which is represented by the formula Ca10(PO4)6(OH)2, is one of the inorganic components of the hard tissues of living bodies such as bones, teeth, etc. HA is a calcium phosphate-based bioceramic, which has been used in medicine and dentistry for more than 20 years because of its excellent biocompatibility with human tissues. The precipitation process, considered here, ...
BACKGROUND OA is a complex disease caused by environmental and genetic risk factors. The purpose of this study is to identify candidate copy number variations (CNVs) associated with OA. METHODS We performed a genome-wide association study of CNV to identify potential loci that confer susceptibility to or protection from OA. CNV genotyping was conducted using NimbleGen HD2 3 × 720K comparative...
In order to directly control the premixed combustion phasing, a Jet Controlled Compression Ignition (JCCI) for diesel premixed compression ignition systems is investigated. Experiments were conducted on a single cylinder natural aspirated diesel engine without EGR at 3000 rpm. Numerical models were validated by load sweep experiments at fixed spark timing. Detailed combustion characteristics we...
The synthesis of low-temperature belite (C2S) clinker from wastes autoclaved aerated concrete and limestone was studied in the presence CaCl2 as a mineralizing agent. Synthetic chlorellestadite (SCE; Ca10(SiO4)3(SO4)3Cl2) forms experiments at temperatures between 700 1200 °C. Samples were investigated by X-ray diffraction Raman spectroscopy. In general, amount SCE depends mainly on sulfate cont...
شناخت شکلهای مختلف فسفر در خاک برای ارزیابی وضعیت فسفر و نیز حاصلخیزی خاک و تغذیة گیاه اطلاعات مفیدی در اختیار میگذارد. برای اطلاع از چگونگی توزیع شکلهایمعدنی و آلی فسفر تعیین همبستگی بین این شکلها با ویژگیهای فیزیکی و شیمیایی خاک و ایجاد معادلههایی برای پیشبینی شکلهای فسفر با بهرهگیری از ویژگیهای خاک در خاکهای آهکی استان آذربایجان شرقی بیست نمونه خاک سطحی از مناطق عمدة کشاورزی اس...
The nucleotide sequences of the 27,939-bp-long upstream and 9,448-bp-long downstream regions of the carAaAaBaBbCAc(ORF7)Ad genes of carbazole-degrading Pseudomonas sp. strain CA10 were determined. Thirty-two open reading frames (ORFs) were identified, and the car gene cluster was consequently revealed to consist of 10 genes (carAaAaBaBbCAcAdDFE) encoding the enzymes for the three-step conversio...
Background and Objective: Hydroxyapatite (Ca10(PO4 )6(OH)2) is an important biomaterial in medical and dental applications. Due to low solubility of its particles, it has had little application in bone reformation. For this reason, nanohydroxyapatite (Nano-HA) with a higher surface area and higher solubility has attracted the attention of researchers as an effective strategy for bone grafting ...
هیدروکسی آپاتیت به فرمول شیمیایی ca10(po4)6(oh)2 و ساختار کریستالی هگزاگونال، ترکیب بازی کلسیم فسفات می باشد که در بدن تشکیل دهنده اصلی بافت استخوان و دندان می باشد . این ترکیب به علت سازگاری خیلی خوب با بافت بدن و ایجاد پیوند مستحکم با استخوان هم اکنون در ساخت پروتز بطور گسترده مورد استفاده قرار می گیرد. بدین منظور بررسی فیزیکی و شیمیایی هیدروکسی آپاتیت دمای بالا جهت ساخت قطعات زینتر شده ح...
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