The porosity of calcium phosphate cements has an impact on several important parameters, such as strength, resorbability and bioactivity. A model to predict the porosity for biomedical cements would hence be a useful tool. At the moment such a model only exists for Portland cements. The aim of this study was to develop and validate a first porosity prediction model for calcium phosphate cements...

These investigations were undertaken to test the hypothesis, of the authors, that there is a relationship between the inorganic composition of teeth and the fluid from which the tooth salts precipitate and that the composition of this jluid in turn is related to the blood serum. If this hypothesis is valid, it should be possible to vary the composition of teeth (during the period of active lime...

[1] In order to better constrain the rate of oxygen isotope exchange between water and phosphate via biochemical reactions a set of controlled experiments were conducted in 1988 at the Aquaculture Plant in Elat, Israel. Different species of algae and other organisms were grown in seawater tanks under controlled conditions, and the water temperature and oxygen isotopic composition (dOw) were mon...

2 Yolk protein chemistry 90 2.1 Table of yolk protein properties 90 2.2 Vitellin, the major yolk protein 90 2.2.1 Vitellogenin amino acid composition 91 2.2.2 Vitellogenin peptide compositions 94 2.2.3 Vitellogenin oligosaccharide 95 2.2.4 Microheterogeneity of vitellin oligosaccharide 96 2.2.5 Vitellogenin lipids 97 2.2.6 Vitellin phosphate 98 2.3 Lipophorin 98 2.3.1 Lipophorin properties 98 2...

Currently, knowledge about the impact of long-term intake of high resistant starch diet on pig hindgut microbiota and metabolite profile is limited. In this study, a combination of the pyrosequencing and the mass spectrometry (MS)-based metabolomics techniques were used to investigate the effects of a raw potato starch (RPS, high in resistant starch) diet on microbial composition and microbial ...

THE fact that the hexosediphosphate which is produced by the action of yeast preparations on a mixture of a hexose and a phosphate is accompanied by a monophosphate renders it necessary to reconsider the equation originally proposed by Harden and Young [1906] to represent the reaction: 2C6HJ206 + 2Na2HPO4= C6H1004(PO4Na2)2 + 2CO2 + 2C2H60 + 2H20. This equation was originally established on the ...

Reduction of phytate is a major goal of plant breeding programs to improve the nutritional quality of crops. Remarkably, except for the storage organs of crops such as barley, maize and soybean, we know little of the stereoisomeric composition of inositol phosphates in plant tissues. To investigate the metabolic origins of higher inositol phosphates in photosynthetic tissues, we have radiolabel...

The main composition and availability of fly ash cause this waste which has potential as an adsorbent to remove ammonium phosphate in water. Difference will different removal efficiency. purposes from research are determine optimal condition for removing concentration the source great solution. conditions were carried out by varying pH solution dosages concentrations initial concentrations. Opt...

Sodium saccharin, ascorbate and other sodium salts fed at high doses to rats produce urinary bladder urothelial cytotoxicity with consequent regenerative hyperplasia. For sodium salts that have been tested, tumor activity is enhanced when administered either alone or after a brief exposure to a known genotoxic bladder carcinogen. These sodium salts alter urinary composition of rats resulting in...