نتایج جستجو برای: nano calcium carbonate

تعداد نتایج: 234184  

2003
YUNUS DOGAN SULEYMAN BASLAR HALIL AYDIN HASAN HUSEYIN MERT

This study was undertaken with the aim of illuminating the soil-plant interactions of Pistacia lentiscus L., which is a Mediterranean sclerophylleous coastal zone plant in the Western Anatolian part of Turkey. The soil analysis data showed that this plant grows on different kinds of soils such as sandy-clayey-loam, clayey-loam, sandy-loam and loamy texture. Soils are not saline, with pH moderat...

Journal: :International Journal of Eco-Innovation in Science and Engineering 2022

ZA fertilizer waste (Ammonium sulfate) is generated from the industrial process of producing fertilizer. The contains very high calcium and has potential to be used as a raw material in manufacture Precipitated Calcium Carbonate (PCC). PCC with certain qualities can developed field advanced materials, size modification into nanoparticles. One method produce nanoparticles using coprecipitation m...

2017
Paula A P de Oliveira Maria Mariana B M da Silveira Maria E Bandeira Ana C P Montenegro Francisco A Bandeira

Results: The rise in serum calcium observed after ingestion of calcium carbonate with a calcium peak of 0.56 mg/dl (p=0.032), and it was higher when compared to SFM 0.26 mg/dl (p=0.284). There was no significant elevation of serum calcium after ingestion of SFM. The calcium responses were negative after the administration of omeprazole in comparison with the use of calcium carbonate and SFM, re...

2017
Akira Onodera Katsutoshi Yayama Hideto Morosawa Yukina Ishii Yasuo Tsutsumi Yuichi Kawai

Several studies have reported that amorphous nano-silica particles (nano-SPs) modulate calcium flux, although the mechanism remains incompletely understood. We thus analyzed the relationship between calcium flux and particle surface properties and determined the calcium flux route. Treatment of Balb/c 3T3 fibroblasts with nano-SPs with a diameter of 70 nm (nSP70) increased cytosolic calcium con...

Fereshteh Motiee, Mercedeh Malekzadeh Saeed Taghvaei-Ganjali Zeynab Abdollahzadeh

Calcium carbonate is a cheap and readily available filler used in rubber industry. This material is not compatible with rubber matrix, so many researchers have tried to modify its surface with various materials in order to increase its hydrophobicity and improve compatibility with the rubber matrix. In this effort, surface modification of calcium carbonate was carried out by 1.5%, 3% and 4% ste...

Journal: :Sao Paulo medical journal = Revista paulista de medicina 2000
E J d'Almeida Filho E A da Cruz M Hoette F Ruzany L N Keen J R Lugon

CONTEXT Hyperphosphatemia has an important role in the development of bone and mineral abnormalities in end-stage renal disease (ESRD). OBJECTIVE To compare the phosphorus binding power and the hypercalcemic effect of calcium acetate and calcium carbonate in hemodialysis patients. TYPE OF STUDY Crossover, randomized, double-blind study. PLACE A private hospital dialysis center. PARTICIP...

2018
Fumihiko Koiwa Keitaro Yokoyama Masafumi Fukagawa Tadao Akizawa

Introduction In this phase III, open-label, single-arm, multi-center 12-week study, we evaluated the efficacy and safety of combination therapy with sucroferric oxyhydroxide (PA21) and calcium carbonate for hemodialysis patients with hyperphosphatemia. Methods We enrolled 35 subjects aged ≥ 20 years with end-stage kidney disease and serum phosphorus 3.5-6.0 mg/dl who were undergoing hemodialy...

Journal: :iranian journal of oil & gas science and technology 2014
azizollah khormali dmitry gennadievich petrakov georgy yuryevich shcherbakov

a fundamental study of scale formation of calcium carbonate (caco3) for producing oil wells hasbeen carried out. this article presents the study of the prediction of salt deposition in two differentsynthetic formation waters and investigates the effects of temperature and pressure on calciumcarbonate precipitation. the dependence of the induction period of the precipitation of calciumcarbonate ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مراغه - دانشکده فنی 1392

پلی آمید در گروه ترموپلاستیک های مهندسی قرار داشته و دارای ساختار نیمه کریستالی است. این پلیمر دارای مقاومت حرارتی و مقاومت سایشی خوب و خواص عمومی مناسب می باشد. با این حال، پلی آمید دارای معایبی مانند جذب رطوبت بالا، پایداری ابعادی ضعیف، دمای تغییر شکل حرارتی (hdt) پایین و مقاومت به ضربه کم می باشد. برای جبران این معایب لازم است به پلی آمید افزودنی ها یا تقویت کننده هایی افزوده شود. الیاف شیشه...

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