موقعك الحالي:صفحة رئيسية>المنتجات
2013-1-1 Abstract. Close to the bone mineral phase, the calcic bioceramics, such as hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP), are commonly used as substitutes or filling materials in bone surgery. Besides, calcium carbonate (CaCO3) is also used for
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Close to the bone mineral phase, the calcic bioceramics, such as hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP), are commonly used as substitutes or filling materials in bone surgery. Besides, calcium carbonate (CaCO3) is also used for their excellent biocompatibility and bioactivity. However, the problem with the animal-origin aragonite ...
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Close to the bone mineral phase, the calcic bioceramics, such as hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP), are commonly used as substitutes or filling materials in bone surgery. Besides, calcium carbonate (CaCO3) is also used for their excellent biocompatibility and bioactivity. However, the problem with the animal-origin aragonite demands the new technique to synthesize pure ...
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2011-7-12 Monohydrocalcite (MHC) and hydrated amorphous calcium carbonate (ACC) indicate many similarities in chemical composition, precipitation condition, and thermal behavior, from which the comparable thermodynamic state of these hydrated calcium carbonates can be deduced.
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Calcite is the most stable modification of calcium carbonate (CaCO 3). As such, it is an important rock-forming mineral and the most abundant carbonate in the earth crust. 18 It plays a major role in many geochemical, biological, as well as industrial 19 processes. Calcite is involved in the earth’s carbonate cycle and, thus, for example, also crucial for storing anthropogenic carbon dioxide.
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2015-12-14 Reduced cell proliferation but higher ALP activity of MG-63 cell line was reported on a calcium carbonate coating on titanium surface when compared to uncovered titanium.14 The death of cells observed in our experiments in the static culture, may be related to elution of calcium ions from the residuals which may appear as a result of the intrasintering microdisintegration. Such residuals are
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Although a wide variety of biomaterials have been already proposed for use in bone tissue engineering, there is still need for man-made materials, which would combine support for osteogenesis with simplicity desirable for upscaling and costs reduction. In this study we have shown that synthetic calcite may serve as a scaffold for human osteoblasts transplantation.
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2018-5-10 Calcite formed in a reef aquarium can often have a lot more magnesium in it than does aragonite, but that's not the difference that defines the name calcite compared to aragonite. All forms have 1:1 moles of calcium and carbonate, except to the
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2011-5-1 calcium carbonate is conventionally used in paper industry as a filler or a coating pigment because it exists a lot in nature and harmless to a human body. But, vaterite has been hardly used in industry because of rarity in nature. So, in this study, calcium carbonate in the form of vaterite was evaluated as a coating pigment for ink-jet.
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2018-7-1 The common morphologies of the polymorphs of calcium carbonate are rhombohedral calcite, needle- or rod-like aragonite, and spherical vaterite. Calcite is the stable form under ambient conditions, while aragonite is metastable . The rod-like morphology belongs to whisker, which is a type of inorganic single crystal with a diameter of 0.5~2 μm and length of 20~60 μm.
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2015-12-14 First data on synthetic calcium carbonate characteristics with regard to the cell response were published by F. Monchau et.al only in 2013.20 The authors have shown that proliferation and viability of mouse osteoblasts line MC3T3-E1 on the calcite substrate significantly diminished on day 3 and 6 as compared to the culture dish conditions but ...
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2017-3-23 bone substitute biomaterials from bovine sources and bone-like minerals (calcium carbonate) derived from corals or avian eggshells, have been preferred due to their biodegradability, abundance and lower price in comparison with synthetic biomaterials [5-9]. The coral-line calcium carbonate (calcite
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2011-1-20 The coralline calcium carbonate (calcite), which is totally resorbable and biocompatible and shows good osteoconductivity, has been used as an effective bone substitute in the natural form or converted to hydroxyapatite (HA) in bone healing in dentistry and orthopedic [4, 10–14].
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2018-5-10 The three dimensional arrangement of calcium and carbonate ions All forms of calcium carbonate can have some amount of magnesium and strontium in them. Calcite formed in a reef aquarium can often have a lot more magnesium in it than does aragonite, but that's not the difference that defines the name calcite compared to aragonite.
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2018-12-12 Aragonite, as a metastable polymorph of Ca carbonate, was replaced via a dissolution in the hydrothermal water coupled with immediate reprecipitation of the ions as the thermodynamically stable polymorph calcite [68], which involved an increase in molar volume by about 8.0% (disregarding the solubility of calcite in the hydrothermal fluid).
Read More2011-5-1 calcium carbonate is conventionally used in paper industry as a filler or a coating pigment because it exists a lot in nature and harmless to a human body. But, vaterite has been hardly used in industry because of rarity in nature. So, in this study, calcium carbonate in the form of vaterite was evaluated as a coating pigment for ink-jet.
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2020-1-10 In marine glass sponge spicules, organic molecules act as templates for either silica or calcium carbonate (calcite) mineralization 7,8. The organic matrix of
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2018-9-8 Reduction or prevention of scaling is commonly achieved by injecting scaling inhibitors into the geothermal circuit. Inhibitor-efficiency tests can be carried out in static or dynamic experiment set-ups allowing measurements at high pressures and high temperatures (HPHT). For these measurements, suitable analytical methods have to be selected depending on the nature of the scales and the ...
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Three commercially available artificial bone substitutes with different compositions, hydroxyapatite (HAp; Neobone®), carbonate apatite (CO₃Ap; Cytrans®), and β-tricalcium phosphate (β-TCP; Cerasorb®), were compared with respect to their physical properties and tissue response to bone, using hybrid dogs. Both Neobone® (HAp) and Cerasorb® (β-TCP) were porous, whereas Cytrans ...
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2011-11-4 The key difference between gypsum and limestone is that the calcium sulfate is the main constituent in gypsum whereas calcium carbonate is the main constituent of limestone.. Limestone and gypsum are minerals that form from calcium salts; limestone contains calcium carbonate while gypsum contains CaSO 4 2H 2 O. However, their properties and usages are different from each other.
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Calcium supplements are generally made with one of two sources of elemental calcium: either calcium carbonate or calcium citrate. Calcium carbonate, the form of calcium found in Caltrate, is the most concentrated form and is commonly found in food and drug stores. Most formulas supply calcium in the form of calcium carbonate.
Read More2015-12-14 First data on synthetic calcium carbonate characteristics with regard to the cell response were published by F. Monchau et.al only in 2013.20 The authors have shown that proliferation and viability of mouse osteoblasts line MC3T3-E1 on the calcite substrate significantly diminished on day 3 and 6 as compared to the culture dish conditions but ...
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Calcium Carbonate is the carbonic salt of calcium (CaCO3). Calcium carbonate is used therapeutically as a phosphate buffer in hemodialysis, as an antacid in gastric hyperacidity for temporary relief of indigestion and heartburn, and as a calcium supplement for preventing and treating osteoporosis. (NCI04)
Read More2011-5-1 calcium carbonate is conventionally used in paper industry as a filler or a coating pigment because it exists a lot in nature and harmless to a human body. But, vaterite has been hardly used in industry because of rarity in nature. So, in this study, calcium carbonate in the form of vaterite was evaluated as a coating pigment for ink-jet.
Read More
2018-7-8 The key difference between calcium carbonate and calcium bicarbonate is that the calcium carbonate molecule consists of Ca, C, and O chemical elements whereas calcium bicarbonate consists of Ca, C, O, and H chemical elements.. Calcium carbonate is a carbonate of calcium that has the chemical formula CaCO 3.It occurs naturally and appears as a white solid.
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2020-10-13 Calcium carbonate supplements tends to be the best value, because they contain the highest amount of elemental calcium (about 40% by weight). Because calcium carbonate requires stomach acid for absorption, it's best to take this product with food. Most people tolerate calcium carbonate well, but some people complain of mild constipation or ...
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2021-2-5 Calcite dissolution and Ca–Mg ion exchange on carbonate rock surfaces have been proposed as potential mechanisms occurring during smart waterflooding in carbonate reservoirs. However, there is still a lack of fundamental understanding of these reactions to quantitatively evaluate their effects in the reservoir flooding process. Especially, the data on precipitation and dissolution kinetics ...
Read More2020-1-10 In marine glass sponge spicules, organic molecules act as templates for either silica or calcium carbonate (calcite) mineralization 7,8. The organic matrix of
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The influence of calcium carbonate (CaCO 3 ) with different polymorphs (calcite and aragonite) and morphologies (granular and rod-like) on mechanical and crystallization properties of polypropylene (PP) was investigated. Meanwhile, these CaCO 3 fillers coated with oleic acid were added in different contents to PP. The results indicate that the tensile strength, flexural strength, modulus, and ...
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الصين -تشنغ تشو -المنطقة الوطنية للتنمية الصناعية للتكنولوجيا المتطورة، جادة العلوم رقم 169.
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