The simple titration method for the determination of organic acids in urine, described by Van Slyke and Palmer (I), has in many circumstances proved satisfactory. A more extended employment of the method to determine organic acids in pathological urines has brought to light limitations and sources of error which need consideration. The organic acids present in urine, both free and as salts, are...

Gallstones are classified into three types based on their composition as cholesterol, pigment and mixed stones, with each type having different epidemiology and risk factors. Additionally, each type of these stones is formed in a different site. Cholesterol stones and pigment stones are predominantly found in the gall bladder and bile canaliculi of liver respectively, while mixed stones occur a...

The simple titration method for the determination of organic acids in urine, described by Van Slyke and Palmer (I), has in many circumstances proved satisfactory. A more extended employment of the method to determine organic acids in pathological urines has brought to light limitations and sources of error which need consideration. The organic acids present in urine, both free and as salts, are...

The widespread use of clhronic dialysis and renal homotransplantation, while prolonging the lives of patients with chronic renal failure, have concomitantly resulted in the appearance of severe disorders of calcium and phosphorus metabolism and disabling renal osteodystrophy (retardation of growth and dwarfism, osteitis fibrosa, rickets or osteomalacia and, at times, osteosclerosis). Furthermor...

A poly(ethylene glycol) (PEG) decorated bis(terpyridine) zinc coordination polymer acts as an anion-responsive material in 100% aqueous solution. Depending on the binding and association constants to Zn(II), the addition of different anions leads to increased emission intensity and/or a shift of the emission wavelength. The sensor was addressed with a collection of common salts to survey the se...

Bone tunnel healing is an important consideration after anterior cruciate ligament (ACL) replacement surgery. Recently, a variety of materials have been proposed for improving this healing process, including autologous bone tissue, cells, artificial proteins, and calcium salts. Amongst these materials are calcium phosphates (CaPs), which are known for their biocompatibility and are widely comme...

Oxides (such as SiO₂, TiO₂, ZrO₂, Al₂O₃, Fe₂O₃, CeO₂) have often been used to prepare supported Pt catalysts for CO oxidation and other reactions, whereas metal phosphate-supported Pt catalysts for CO oxidation were rarely reported. Metal phosphates are a family of metal salts with high thermal stability and acid-base properties. Hydroxyapatite (Ca10(PO₄)₆(OH)₂, denoted as Ca-P-O here) also has...

In a previous paper, Chapman & Campbell (1957) reported that the addition of relatively large amounts of bone meal to bread diets low in iron retarded haemoglobin regeneration in anaemic rats. In view of the contradictory reports in the literature, mentioned by these authors, about the effect of calcium and phosphorus on the utilization of iron, it was considered desirable to extend this work t...

The simple titration method for the determination of organic acids in urine, described by Van Slyke and Palmer (I), has in many circumstances proved satisfactory. A more extended employment of the method to determine organic acids in pathological urines has brought to light limitations and sources of error which need consideration. The organic acids present in urine, both free and as salts, are...