BACKGROUND AND PURPOSE In patients with metal-on-metal (MoM) hip prostheses, pain and joint effusions may be associated with elevated blood levels of cobalt and chromium ions. Since little is known about the kinetics of metal ion clearance from the body and the rate of resolution of elevated blood ion levels, we examined the time course of cobalt and chromium ion levels after revision of MoM hi...

Previous research has shown an increase in chromosomal aberrations in patients with worn implants. The type of aberration depended on the type of metal alloy in the prosthesis. We have investigated the metal-specific difference in the level of DNA damage (DNA stand breaks and alkali labile sites) induced by culturing human fibroblasts in synovial fluid retrieved at revision arthroplasty. All si...

In the different compartments of the environmental chromium occurs mainly in the oxidation states (III) and (VI). Although Cr(III) is an essential trace element for humans, Cr(VI) is highly cancerogenic and mutagenic. It is, therefore, necessary for risk assessment not only to determine total chromium, but also to determine chromium species, especially Cr(VI). Hexavalent chromium can be determi...

Biosorption is a process, which represents a biotechnological innovation as well as a cost effective excellent tool for removing heavy metals from aqueous solutions. The kinetics and equilibrium of the biosorption of Chromium (VI) from aqueous solution were investigated using immobilized mixed biosorbents of Annona squamosa seeds and Aspergillus niger in a batch system. The biosorption characte...

Focused ion beams (FIBs) are an invaluable tool for the creation and observation of materials with nanoscale feature sizes, providing key capabilities in integrated circuit sectioning, critical dimension measurement, and circuit repair. However, ion sources capable of both high brightness and low emittance operation are difficult to realize, with practical sources limited to very few atomic spe...

In ecological risk assessment for chemical pollutants, it is important to quantify the concentrations of freely dissolved substances in aqueous samples for approximate characterization of the bioavailable fraction. Such measurements are important because the concentration and toxicity of a chemical in an organism’s body are linked to the bioavailable fraction and its chemical form within the su...

Background: Orthodontics is a part of dentistry that includes preventive methods and correction of dental irregularities that need to be repositioned by functional and mechanical tools to provide an ideal occlusion and a beautiful face for patients. There are currently four metal arch wires used in orthodontic treatment: stainless steel alloy, cobalt-chromium alloy, nickel-titanium alloy, and b...

The chromium (III) metformin hydrochloride complex as a diabetic drug model was synthesised by the chemical reaction between chromium (III) chloride hexahydrateand metforminHCl (Mfn.HCl) in methanol solvent. The [Cr(Mfn-HCl)2(Cl)2].Cl.6H2O complex was characterized using microanalytical measurements, molar conductance, spectroscopic (infrared, and UV-vis.), effective magnetic moment, and therma...

Abstract In Malaysia, water pollution due to the various heavy metal contaminants has become a serious issue that needs be concerned. Among treatment methods, adsorption method been considered one of most efficient wastewater techniques. This study was done find out capacity orange peel (OP) by different pre-treatment in removing copper, chromium, and nickel ion from aqueous. OP powder divided ...