Results 271 to 280 of about 1,747,741 (337)
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Calcium Phosphate in Catheter Encrustation
British Journal of Urology, 1987Summary— 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. +4 more
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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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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, 1984In 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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The importance of being amorphous: calcium and magnesium phosphates in the human body.
Advances in Colloid and Interface Science, 2019This article focuses on the relevance of amorphous calcium (and magnesium) phosphates in living organisms. Although crystalline calcium phosphate (CaP)-based materials are known to constitute the major inorganic constituents of human hard tissues ...
Rita Gelli, Francesca Ridi, P. Baglioni
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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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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, 1979SUMMARYCalorimetric 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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Silica Gel Template for Calcium Phosphates Crystallization
, 2009 Synthetic calcium phosphates exhibit good properties as biomaterials, such as biocompatibility, bioactivity, and osteoconductivity, and they have important applications in the fields of bone tissue engineering and orthopedic therapies. In this work, we
M. Iafisco +5 more
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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 +2 more
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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 +2 more
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Calcium phosphate ceramics with sodium‐rich calcium phosphate phases at the surface
Materialwissenschaft und Werkstofftechnik, 2013AbstractCalcium phosphate was prepared by aqueous wet‐chemical precipitation from sodium phosphate and calcium nitrate under standard conditions. By incomplete removal of the mother liquor, the by‐product sodium nitrate remained in the dried powder. Upon annealing at 1150°C, the sodium‐rich phases β‐rhenanite (NaCaPO4) and Na3Ca6(PO4)5 were formed.
Zyman, Zoltan Z. +3 more
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XRD Analysis of Calcium Phosphate and Biocomposite Calcium Phosphate/Bioresorbable Polymer
Materials Science Forum, 2006Composite biomaterials based on calcium phosphate ceramic due to their high bioactivity are of interest for biological application and bone tissue repair. Structural and microstructural parameters of inorganic constituent of these materials are very important for the synthesis and characterization of composites.
Kandić, Ljiljana +2 more
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