Results 21 to 30 of about 372,352 (192)

Calcium carbonate-calcium phosphate mixed cement compositions for bone reconstruction [PDF]

open access: yes, 2006
The feasibility of making calcium carbonate-calcium phosphate (CaCO3-CaP) mixed cements, comprising at least 40 % (w/w) CaCO3 in the dry powder ingredients, has been demonstrated.
Arnaud   +55 more
core   +2 more sources

Study on Calcified Alkali Leaching of Vanadium-Extracted Tailings and Preparation of Barium Orthovanadate

open access: yesNanomaterials
While vanadium-extracted tailings contain valuable components, their utilization is difficult due to their high sodium content. In this work, a new oxygen-pressure calcification and alkaline leaching strategy to achieve barium orthovanadate vanadium ...
Jinwei Qu, Yiqiu Wang, Xinyu Hao, Na Ma
doaj   +1 more source

Calcite moonmilk of microbial origin in the Etruscan Tomba degli Scudi in Tarquinia, Italy [PDF]

open access: yes, 2018
A white deposit covering the walls in the Stanza degli Scudi of the Tomba degli Scudi, Tarquinia, Italy, has been investigated. In this chamber, which is still preserved from any kind of intervention such as cleaning and sanitization, ancient Etruscans ...
Arrighi, Chiara   +10 more
core   +3 more sources

Current Situation of Vanadium Resources and New Process Progress of Vanadium Extraction from the Stone Coal Vanadium Ore

open access: yesKuangchan zonghe liyong
The main occurrence minerals of vanadium include vanadium titanomagnetite, stone coal vanadium and vanadium lead ores. At present, the vanadium extraction processes of stone coal vanadium ore are mainly sodium roasting-water leaching and calcification ...
Jinwei QU   +4 more
doaj   +1 more source

Impact of Temperature and Substrate Type on the Optical and Structural Properties of AlN Epilayers: A Cross-Sectional Analysis Using Advanced Characterization Techniques

open access: yesMolecules
AlN, with its ultra-wide bandgap, is highly attractive for modern applications in deep ultraviolet light-emitting diodes and electronic devices. In this study, the surface and cross-sectional properties of AlN films grown on flat and nano-patterned ...
Wenwang Wei   +4 more
doaj   +1 more source

Ca2+ addition facilitates the shell repair with eggs production of Pomacea canaliculata through biomineralization and food intaking regulation

open access: yesScientific Reports, 2023
Pomacea canaliculata was by far one of the most harmful invasive organisms in the world, causing serious harm to aquatic crops and ecosystem. Calcium carbonate is a common component of aquatic environment, which is important for the growth of Pomacea ...
Yingtong Chen   +5 more
doaj   +1 more source

The influence of type of calcium carbonate fillers on the performance AKD and mechanical properties of printing and writing paper [PDF]

open access: yesIranian Journal of Wood and Paper Industries, 2016
This study aimed at evaluating effect of sizing agent and various fillers on properties of printing and writing paper. Therefore, sizing agent (AKD) in 1.5% level and fillers including precipitated calcium carbonate (PCC), ground calcium carbonate (GCC ...
mohammad taghi manghuli   +3 more
doaj  

Use of eggshells as a raw material for production of calcium preparations

open access: yesCzech Journal of Food Sciences, 2016
The kinetics of calcium release from tablets obtained from modified eggshells in the form of calcium citrate and calcium carbonate was investigated. Calcium release showed the first-order kinetics.
Barbara Dolińska   +3 more
doaj   +1 more source

A comparison between the combined effect of calcium carbonate with sucroferric oxyhydroxide and other phosphate binders: an in vitro and in vivo experimental study

open access: yesBMC Nephrology, 2019
Background Approximately 30% of patients on dialysis received combination therapy for their phosphate binder prescription; however, few studies for combined effects of phosphate binders are reported.
Atsushi Yaguchi   +7 more
doaj   +1 more source

Co-Deposition Mechanisms of Calcium Sulfate and Calcium Carbonate Scale in Produced Water

open access: yesCrystals, 2021
Co-precipitation of mineral-based salts during scaling remains poorly understood and thermodynamically undefined within the water industry. This study focuses on investigating calcium carbonate and calcium sulfate mixed precipitation in scaling.
Yan Yan   +6 more
doaj   +1 more source

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