Results 251 to 260 of about 492,665 (311)

Calcium Phosphate Mineralization

Connective Tissue Research, 1989
Although it is often assumed that the thermodynamically most stable hydroxyapatite is a suitable prototype for biological minerals, it is now generally accepted that other phases such as dicalcium phosphate dihydrate and octacalcium phosphate as well as defect apatites and carbonated apatites may participate.
G H, Nancollas, S J, Zawacki
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Calcium Phosphate Transfection

Current Protocols in Neuroscience, 1997
AbstractThis unit presents two methods of calcium phosphate‐based eukaryotic cell transfection that can be used for both transient and stable transfections. In these protocols, plasmid DNA is introduced to monolayer cell cultures via a precipitate that adheres to the cell surface.
R E, Kingston, C A, Chen, H, Okayama
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Determination of calcium in official calcium phosphates

Journal of Pharmaceutical Sciences, 1967
The assay of official calcium phosphates for calcium can be brought into the general method for calcium determination by titration with EDTA using hydroxynaphthol blue indicator by dissolving the sample in a strictly limited amount of hydrochloric acid, passing an aliquot of the solution through a column of anion-exchange resin in the chloride form ...
J S, Kim, M M, Tuckerman
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Calcium oxalate: calcium phosphate transformations

Urological Research, 2010
Knowledge of the physical-chemical mechanisms responsible for the crystal growth and dissolution events involved in stone formation might enable the manipulation of thermodynamics in such a way as to increase the solubility of sparingly soluble phases (such as calcium oxalates and phosphates), thereby reducing the driving force for stone formation ...
George H, Nancollas, Zachary J, Henneman
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Calcium Phosphate in Catheter Encrustation

British Journal of Urology, 1987
Summary— Encrusted catheters from nine female patients were the source of samples of deposits which were examined by X‐ray diffraction, atomic absorption spectroscopy, infra‐red spectroscopy and extended X‐ray absorption fine structure (EXAFS) spectroscopy. In eight samples the only crystalline phase which could
Cox, A. J., Harries, J. E., Hukins, D. W L, Kennedy, A. P., Sutton, T. M.   +4 more
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Calcium and phosphate testing

British Journal of Hospital Medicine, 2009
Calcium and phosphate usually form part of a ‘bone’ profile of tests that also includes measurement of serum albumin and alkaline phosphatase levels. Most laboratories report total calcium concentration in serum. This is influenced in particular by serum albumin concentration, and the total calcium is therefore also adjusted for the serum albumin ...
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Tympanoplasty With Calcium Phosphate

Archives of Otolaryngology - Head and Neck Surgery, 1984
In 35 patients, with an average follow-up period of 2 1/2 years, the middle ear was reconstructed with prostheses of hydroxyapatite, which is the main substance of living bone tissue. In case of a missing incus, an interposition prosthesis of dense hydroxyapatite was used.
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Amorphous Calcium Phosphate

2001
ACP is a unique calcium phosphate in that it lacks long-range crystalline order. Yet the constancy in the composition of ACP over a wide range of solution conditions suggests a well-defined local structural unit. Although this order within disorder is the most distinguishing feature of ACP, the solution instability of ACP and its ready transformation ...
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The Equilibria of Calcium and Phosphate Ions with the Micellar Calcium Phosphate of Cow's Milk

Canadian Institute of Food Science and Technology Journal, 1979
SUMMARYCalorimetric measurements of the heat of solution of micellar Ca phosphate suggest that this material more closely resembles OH-apatite than amorphous Ca phosphate or any other crystalline form. Preliminary computer calculations of the ionic equilibria of milk salt solutions indicate that, over a wide range of pH and temperature, such solutions ...
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Effect of the calcium to phosphate ratio of tetracalcium phosphate on the properties of calcium phosphate bone cement

Journal of Biomedical Materials Research Part A, 2007
AbstractSix different tetracalcium phosphate (TTCP) products were synthesized by solid state reaction at high temperature by varying the overall calcium to phosphate ratio of the synthesis mixture. The objective was to evaluate the effect of the calcium to phosphate ratio on a TTCP‐dicalcium phosphate dihydrate (DCPD) cement.
Elena F, Burguera, Francisco, Guitian, Laurence C, Chow   +2 more
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