The calcium phosphate composite octacalcium / calcite was obtained at pH 5–7 from the CaCO 3 /Ca(H 2 PO 4 ) aqueous suspension in a galvanostatic mode current density of 20 mA/cm for min. Drying 80 °C without precipitate maturation stage led to powder formation consisting brushite, and small amount phosphate. Prolonged air months hydrolytic transformation brushite into stabilized by calcite. us...

Abstract Background and Objective: Vascular abnormality and dysfunction plays an important role in the pathogenesis of vascular disease in diabetic state. In this study, we aimed to investigate whether an in vitro exposure of endothelium-intact aortic rings to Melissa officinalis (lemon balm, MO) aqueous extract could have a beneficial effect in rats with subchronic diabetes. Materials and Meth...

The waste tyres represent a source of energy and valuable hydrocarbon products. Waste tyres were pyrolysed catalytically in a batch reactor under atmospheric pressure. The effects of basic catalysts (MgO and CaCO3) were studied on the pyrolysis products. The distribution ratio of gas, liquid and char with MgO and CaCO3 were 24.4:39.8:35.8 wt % and 32.5:32.2:35.2 wt % r...

Calcium oxalate crystals are responsible for formation of urinary calculi. Traditional therapy based on plants and herbal resources have found beneficial treatment kidney stones. The present study aimed to screen antilithiatic antioxidant potential Polyalthia Longifolia leaves methanolic extract. extract was evaluated the presence secondary metabolites, total phenolic content flavonoid contents...

This study explores the potential of titanium oxide impregnated on calcium oxide (CaO-TiO2) as catalyst in transesterification of vegetable palm oil (VPO) to produce biodiesel. The biodiesel yield increased with catalyst calcination temperature and reaction time, and the usage of CaO-TiO2 led to higher biodiesel production when compared to reaction catalyzed by CaO. Biodiesel yield of 93.33% wa...

Oil palm ash (OPA), a bio-agricultural waste from oil palm mills, was subjected to high-energy ball milling for 30 h and was converted into a nano-structured material. The nano-structured OPA was characterized for its particle size and crystallinity index by using Transmission Electron Microscopy (TEM) and X-ray Diffraction (XRD) analysis. The crystallite size obtained from TEM and XRD was foun...

Abstract Nitric oxide plays a crucial role in the human body, due to its regulatory effect on vascular tone, cell adhesion, permeability, etc. The introduction of nitric into calcium phosphate coatings can increase bioactivity significantly. This article proves possibility deposition oxide-containing titanium substrates. Therefore, various argon-nitrogen working gas mixtures were used reactive ...

Calcium oxide is one of the appropriate catalysts for biodiesel production. In this study, cheap and compatible with environment catalyst has been used. Mussel shell of Persian Gulf coast is one of the sources of calcium carbonate that is converted to calcium oxide at calcination temperature up to 950°C. Transesterification reaction was carried out at optimum condition of our previous study...

Parthenogenetic activation of mammalian oocytes with artificial stimuli is commonly applied in various reproductive biotechniques, e.g. cloning using nuclear transfer. For this reason, many studies focus on oocyte activation in vitro. Recently we have described the activation of pig oocytes using nitric oxide. This activating stimulus is very specific in many aspects. However, it does not provi...