The effects of different aluminum species on malate dehydrogenase (MDH) activity were investigated by monitoring amperometric i-t curves for the oxidation of NADH at low overpotential using a functionalized multi-wall nanotube (MWNT) modified glass carbon electrode (GCE). The results showed that Al(III) and Al(13) can activate the enzymatic activity of MDH, and the activation reaches maximum le...

High energetic aluminum nanoparticles are mainly used as additive in solid rocket propellants. However, fabrication of these aluminized energetic materials is associated with decreasing the burning rate of propellants due to problems such as oxidation and agglomeration of nanoparticles. In this study, to improve combustion performance of aluminum nanoparticles, coating by metallic Ni shell...

400 300 I 7⁄8 iE 200 D100 Fig. 1. Change in serum intact PTH concentration. minum accumulation, for the treatment of mild to moderate secondary HPT. Five patients whose parathyroid hormone (PTH) concentration before hemodialysis was between 200 and 400 pg/ml were selected. All patients were hemodialyzed for 5 h three times weekly, employing a dialysate calcium concentration of 3,5 mEq/1. The ag...

Zn-Al layered double hydroxide (LDH) nanoparticles with carbonate as the charge balancing anion in the interlayer space were synthesized using co-precipitation method. Then, the carbonate base Zn-Al LDH nanoparticles were doped with phosphate ion via anion-exchange reaction to synthesize Zn-Al-[PO43-]-[CO32-]. The structure and composition were characterized by X-ray diffraction (XRD), Fourier ...

The occurrence of allophane and ferrihydrite in volcanic ash soils contributes to the high P sorption capacity soils. objective this study was investigate distribution phosphate between systems their mixtures as a function sorbed aqueous citrate concentrations. results were compared with those from rich ferrihydrite. Phosphate adsorption isotherm for allophane–ferrihydrite described linear comb...

The Pampa’s rangeland in South America is underused or replaced by annual crops forest cultivation with higher economic returns. Our goal was to test the long term effects of phosphorus fertilizer and limestone applications on P availability, aluminum neutralization deep soil layer productivity. For this, three rates sources combined were applied a 21 year field trial. dry matter (between 2016 ...

Mesoporous aluminum oxyhydroxides composed of nanoflakes were prepared via a water-in-oil microemulsion-assisted hydrothermal process at 50 °C using aluminum salts as precursors and ammonium hydroxide as a precipitating agent. The microstructure, morphology, and textural properties of the as-prepared materials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM)...

Phosphate control is still a great challenge in chronic kidney disease (CKD), and in spite of the great improvements in dialysis techniques, achievement of the goals for mineral metabolism control is still far from ideal. Aluminum hydroxide has been largely abandoned due to the high risk of aluminum toxicity, while the use of calcium-based phosphate binders may cause hypercalcemia, overzealous ...

The characteristics of inorganic particles generated in glass vials filled with phosphate buffer solutions were investigated. During storage, particles were visually detected in the phosphate buffer solution in particular glass vials which pass compendial tests of containers for injectable drugs. These particles were considered to be different from ordinal glass delamination, which has been rep...

Introduction: One of the ways of human exposure to aluminum (Al) is Al food packaging materials and cookwares. Although many studies have examined the biotic influence of nanoparticles or ionic form of heavy metals, there are limited studies conducted on the possible health risks of metals in the form of alloy used for making utensils. In this study, the effect of water boiled in Al cookwares w...