The leaching studies carried out after treatment with 20% formic acid at room temperature showed a remarkable increase in dissolution efficiencies to 97% Pt, 94% Pd and 90% Rh.
ConclusionsA process for the leaching of PGMs using electro-generated chlorine showed almost total dissolution of PGMs in hydrochloric acid solution after pretreatment of the spent automotive catalyst with formic acid. The proposed leaching system is eco-friendly and has high leaching ability for PGMs from spent materials.
(c) 2013 Society of Chemical Industry”
“Objective. The primary aim of this study was to compare the incidence of catheter- associated bacteriuria with a noble metal alloy-coated latex catheter or a non-coated silicone catheter in patients undergoing find more elective orthopaedic surgery with shortterm catheterization. Secondary objectives included identifying risk factors for bacteriuria and catheter-associated urinary tract symptoms. Material and methods. The study compared 217 patients randomized to and receiving a silicone catheter with 222 patients treated with a coated latex catheter. Before removal of the catheter a sample for urinary culture was obtained. Bacteriuria was defined as the growth of >= 100 000 cfu/ml. A logistic regression model was used to identify risk groups for bacteriuria. Patients were interviewed about urinary tract symptoms Autophagy Compound Library cell line during and after catheterization. Results. The incidence of bacteriuria was 1.5% with
the coated latex catheter and 5.5% selleck chemicals llc with the silicone catheter (p = 0.027) after a mean period of 2 days’ catheterization time. Female gender (odds ratio 6.02) and obesity (odds ratio 5.08) were significant risk factors for bacteriuria. A quarter of the patients reported at least one symptom from the urinary tract during and after catheterization. Most patients defined the symptoms as “”yes, a little”" and a few consulted a healthcare professional because of the symptoms. Conclusion. This study confirmed previous results that the noble metal alloy coating significantly reduces the risk of catheterassociated bacteriuria in short-term catheterization
(1-3 days). Female gender and obesity were significant risk factors for developing bacteriuria, while the use of an open drainage system and insertion of the catheter on the ward were not.”
“Study Design. Retrospective review of a series of adolescent idiopathic scoliosis patients.
Objective. To perform a 3-dimensional (3D) analysis of patients with thoracic scoliosis to identify differences in the thoracic sagittal alignment measured from the standard lateral projection as compared to the “”true lateral”" view.
Summary of Background Data. It has been difficult to clinically obtain radiographs in the planes of maximum spinal deformity. Recently, 3D models of the spine have been developed using biplanar radiographic reconstructions that allow a more accurate assessment of spinal alignment.
Methods.