Ultrasonographic phases in gap healing following Ponseti-type Achilles tenotomy.

Background: The Ponseti technique is well established in the management of clubfoot deformity, and an Achilles tenotomy is frequently performed to facilitate dorsiflexion of the foot. This report describes the ultrasonographic phases of healing of the tendon gap created by the Achilles tenotomy and how the healing varies, if at all, with patient age.

Methods: A prospective ultrasonographic study of gap healing following a Ponseti-type tenotomy in twenty-seven tendons in twenty patients with idiopathic congenital clubfoot was performed.

Barium borosilicate glass as a matrix for the uptake of dyes.

Barium borosilicate (BBS) and sodium borosilicate (SBS) glass samples, prepared by the conventional melt-quench method, were used for the uptake of Rhodamine 6G dye from aqueous solution. The experimental conditions were optimized to get maximum uptake and was found to be 0.4 mg of dye per gram of BBS glass sample.

Removal of radioactive caesium from low level radioactive waste (LLW) streams using cobalt ferrocyanide impregnated organic anion exchanger.

The volumes of low level waste (LLW) generated during the operation of nuclear reactor are very high and require a concentration step before suitable matrix fixation. The volume reduction (concentration) is achieved either by co-precipitating technique or by the use of highly selective sorbents and ion exchange materials. The present study details the preparation of cobalt ferrocyanide impregnated into anion exchange resin and its evaluation with respect to removal of Cs in LLW streams both in column mode and batch mode operations.

The effect of local anesthetics administered via pain pump on chondrocyte viability.

Background: Chondrolysis initiated by postoperative, intra-articular pain pumps has recently been described by multiple institutions.

Purpose: To evaluate the in vitro chondrotoxicity of anesthetic formulations commonly used in pain pumps.

Study Design: Controlled laboratory study.

Potential of Chromolaena odorata for phytoremediation of (137)Cs from solution and low level nuclear waste.

Potential of Chromolaena odorata plants for remediation of (137)Cs from solutions and low level nuclear waste was evaluated. When plants were exposed to solutions spiked with three different levels of (137)Cs, namely 1 x 10(3) kBqL(-1), 5 x 10(3) kBqL(-1) and 10 x 10(3) kBqL(-1), 89%, 81% and 51% of (137)Cs was found to be remediated in 15 d, respectively. At the lowest Cs activity (1 x 10(3) kBqL(-1)), accumulation of Cs was found to be higher in roots compared to shoots, while at higher Cs activities (5 x 10(3) kBqL(-1) and 10 x 10(3) kBqL(-1)), Cs accumulation was more in shoots than roots.

Ionic transport behavior of BaO containing sodium borosilicate glasses.

The present manuscript describes the preparation, characterization and electrical behavior of sodium borosilicate glasses with varying concentrations of BaO, while maintaining the SiO(2):B(2)O(3):Na(2)O ratios constant for all the samples. The effect of BaO substitution on the ionic conductivity of glasses was studied by ac impedance analyzer, below the glass transition temperature. The diffusion coefficient (D) of each sample has been determined from the values of electrical conductivity and density.

Effect of barium on diffusion of sodium in borosilicate glass.

Diffusion coefficients of sodium in barium borosilicate glasses having varying concentration of barium were determined by heterogeneous isotopic exchange method using (24)Na as the radiotracer for sodium. The measurements were carried out at various temperatures (748-798 K) to obtain the activation energy (E(a)) of diffusion. The E(a) values were found to increase with increasing barium content of the glass, indicating that introduction of barium in the borosilicate glass hinders the diffusion of alkali metal ions from the glass matrix.

Borosilicate glasses modified with organic ligands: a new selective approach for the removal of uranyl ion.

Barium borosilicate glass was found to have high uptake capacity for many cations. To improve its selectivity, surface modification was carried out. In order to make the glass selective towards uranyl ion, organic ligands like tri-n-octylphosphine oxide (TOPO) and 8-hydroxy quinoline (Oxine) were used.

Phytoremediation of 137cesium and 90strontium from solutions and low-level nuclear waste by Vetiveria zizanoides.

Vetiver grass (Vetiveria zizanoides) L. Nash plantlets when tested for their potential to remove (90)Sr and (137)Cs (5 x 10(3) k Bq l(-1)) from solutions spiked with individual radionuclide showed that 94% of (90)Sr and 61% of (137)Cs could be removed from solutions after 168 h. When both (90)Sr and (137)Cs were supplemented together to the solution, 91% of (90)Sr and 59% of (137)Cs were removed at the end of 168 h.

Phytoremediation of radiostrontium ((90)Sr) and radiocesium ((137)Cs) using giant milky weed (Calotropis gigantea R.Br.) plants.

Potential of plants to remove radionuclides/toxic elements from soils and solutions can be successfully applied for removal of important radionuclides such as strontium-90 ((90)Sr) and cesium-137 ((137)Cs). When uptake of (137)Cs and (90)Sr by Calotropis gigantea plants incubated in distilled water spiked with the radionuclides either alone or in combination was studied, it was found to have a high efficiency for the removal of (90)Sr, with 90% being removed from solutions (5 x 10(3)kBql(-1)) within 24h of incubation. However, in case of (137)Cs, about 44% could be removed from solutions (5 x 10(3)kBql(-1)) at the end of 168h of incubation.

Early and late outcome after off-pump coronary artery bypass graft surgery with coronary endarterectomy: a single-center 10-year experience.

Background: We aimed to review the early and late results of off-pump coronary artery bypass graft surgery (OPCABG) with coronary endarterectomy in patients undergoing surgical revascularization at our institution.

Methods: Between 1995 and 2004, of 680 OPCABG patients in a single surgeon's practice (W.R.