In the previous paper it was suggested that information concerning the permeability of the pancreatic tissue to the constituents of the blood serum could best be studied by determining the composition of pancreatic juice and serum during experimental variation in the composition of the latter. In that paper experiments were reported, in which acid and alkaline solutions were injected intravenou...

The state of the electrochemical behaviour Al electrode in aqueous solutions containing Na2MoO4 + H3PO4 chitosan was investigated by methods currentless chronopotentiometry, chronoamperometry, optical and scanning electron microscopy. modification surface polymolybdate phosphate layers carried out a potentiostatic mode potentials range from ?1 to ?3 V polarization time (from 15 90 min). element...

Microscope, cathodoluminescence, chemical and oxygen isotope studies have been conducted to determine the original mineralogy diagenetic alteration of phosphatic grasping spines Cambrian chaetognaths. The obtained data, along with a comparison composition conodont apatite, show presence few generations phosphate phases. A thin, outer layer is composed very early phosphate, which incrusted cutic...

Synthetic grafting materials, such as calcium phosphates (hydroxyapatite, HA; tricalcium phosphate, TCP), polymers, or composites thereof, can be used as osteoconductive scaffolds and delivery vehicles for osteoinductive growth factors. Carrier materials must be engineered to deliver these factors in a controlled fashion at a rate and dose consistent with the biological need and responsiveness ...

Gallstone disease is a major surgical problem in many populations; it is probably related to diet, especially excessive consumption of meat. The objective of this study was to determine the chemical composition of gallstones and their association with neoplastic changes including cholangiocarcinomas in cholecystectomised patients. The chemical composition of gallstones from 40 patients (8 males...

Three dimensional printing was investigated for fabricating hydroxyapatite (HA) and tricalcium phosphate ( -TCP) composite scaffolds using calcium phosphate based ceramics and calcium phosphate cement chemistry. Scaffolds were formed by printing an aqueous sodium phosphate solution on the powder bed consisting of a mixture of dicalcium phosphate anhydrous (DCPA) and calcium hydroxide powders. T...

In the previous paper it was suggested that information concerning the permeability of the pancreatic tissue to the constituents of the blood serum could best be studied by determining the composition of pancreatic juice and serum during experimental variation in the composition of the latter. In that paper experiments were reported, in which acid and alkaline solutions were injected intravenou...

Phosphate coating hazardous wastes originated from the automotive industry were efficiently encapsulated by an acid-base reaction between phosphates present in the sludge and calcium aluminate cement, yielding very inert and stable monolithic blocks of amorphous calcium phosphate (ACP). Two different compositions of industrial sludge were characterized and loaded in ratios ranging from 10 to 50...

The development of PEO surface treatments for Nb (niobium) provides a possibility to produce functionalized coatings with combination new compositions and phases. In the frame this work, on pure are produced in three electrolytes containing aluminate, phosphate silicate. Furthermore, influence electrolyte composition process microstructure, properties were studied. It was observed that most coa...

535.Ship I. I. and Mickelsen 0. 1964. The effects of calcium andphosphate on dental caries in children: a controlled clini-cal trial. J. dealt. Rcs. 43, 1144 1149.Stephen K. W., Beeley J. A., MacFadyen E. and Bowen W. H. 1973. The effect of calcium glycerophosphate tablets on the composition of plaque from school children. He/u.odont. Acta 17. 54. Abstract.Stookey G. K.,...