Gore tex medialization thyroplasty- A case series

Unilateral vocal fold paralysis classically presents with voice change, aspiration of ingested materials and cough. Medialization thyroplasty has become treatment of choice for un recovering vocal fold palsy. Still the ideal implant has not been defined in the surgical medialization of vocal folds. We present our experience of gore tex as the implant material.

HAIR DYE POISONING (An emerging emergency for airway surgeon- a case report)

Super-Vasmol, a cheap, freely-available hair dye isemerging as a major cause of suicidal poisoning in India. It contains potential toxins including paraphenylene diamine, resorcinol, sodium ethylenediaminetetraacetic acid and propylene glycol which can result in multiorgan dysfunction2 .This case report is an attempt to throw light on this emerging problem.

Fracture zygoma and its management our experience

Zygoma is a very crucial component which maintains facial contour. Fractures involving zygoma isvery common, in fact it is the second most common facial bone to the fractured following facialtrauma (next only to nasal bones). Fractures involving maxilla not only creates cosmeticdeformities, it also causes disruption of ocular and mandibular functions too. This article attemptsto discuss in detail the etiopathogenesis and the various management options available. It alsoincludes our 3 years experience in treating these patients at Stanley Medical College Chennai.During the period of 3 years between 2010 - 2012 about 82 patients got treated in our institution forfaciomaxillary trauma.

Inclusion control in steel castings

“Non-metallic inclusions are mainly comprised of oxides, sulfides, and nitrides, and are formed in liquid steel during the melting and refining process, as a result of reoxidation, worn-out refractories, or entrained slag. The notch toughness of high strength steels is particularly susceptible to the type, number, size, and distribution of non-metallic inclusions. High manganese and aluminum austenitic steels, or Fe-Mn-Al steels, have gained much interest in the military and automotive sector because of their excellent combinations of high strength and toughness. However, these steels are subject to both oxide bifilms and aluminum nitride, AlN, inclusions which form during melting and casting. During the casting process, the gating system plays an important role in determining the casting quality and the overall level of inclusions and bifilm defects. Two solutions to control inclusions during mold filling include molten metal filtration and design of novel “naturally pressurized” gating systems that control metal flow into the casting cavity and reduce air entrainment. However, the use of filters and these naturally pressurized gating systems add an additional cost and generally reduce casting yield. In the current study, the effects of filtration and gating design on reduction of bifilms and inclusions in Fe-Mn-Al steel were determined using two novel mold designs. A parallel gating study involving an aluminum deoxidized, cast composition of SAE 8630 was also performed. The results of this study showed that ceramic foam filters were more effective at removing solid oxide bifilms and aluminum nitride inclusions from Fe-Mn-Al steel castings than the naturally pressurized gating systems. Future studies should be directed at developing naturally pressurized gating systems with filters”--Abstract, page iv

Effect of Grinding on Strength and Durability of GGBFS - based Concrete

This paper presents laboratory investigations on the use of ultra fine ground granulated blast furnace slag (UFGGBFS) as a mineral admixture in concrete and cement mortar cubes. Ground granulated blast furnace slag (GGBFS) is available in plenty as a waste product resulting from steel industries and posing disposal problems subsequently leading to environmental problems. GGBFS obtained in the present work was subjected to grinding for two hours using agate pestle mortar and the effect of grinding on size was monitored by testing particle size with the help of a particle size analyzer, where reduction in size was observed. The sample was later used as a partial substitute to cement. A high strength concrete mix with a characteristic compressive strength of 40 MPa was selected for the present study, and cement was replaced with UFGGBFS in three different percentages; namely 3, 5 and 7%. Compressive strength of mortar and strength and sorptivity characteristics of concrete made with UFGGBFS were studied. Test results showed that replacement of cement with 5% UFGGBFS yielded better resistance to compression and sorption in normal and aggressive environments compared to control specimens

RELAXATION THYROPLASTY – A CLASSICAL SURGICAL APPROACH FOR PUBERPHONIA

The persistence of adolescent voice even after puberty in the absence of organic cause is known as puberphonia. 1,2,3The condition is commonly seen in males.1-7 . This case report illustrates a novel surgical method “Retrusionthyroplasty” in the management of puberphonia.

Lingual thyroid our experience

Lingual thyroid is an uncommon congenital disorder of thyroid gland development, resulting in alack of descend of the gland from foramen caecum to its normal prelaryngeal location. In this paperwe discuss a series of cases of ectopic thyroid gland its incidence, clinical presentation, sex ratio,age group, endocrine status, radiological features and appropriate surgical approaches. 

Padina boergessenii ameliorates carbon tetrachloride induced nephrotoxicity in Wistar rats

AbstractThis research investigates the ameliorative effect of brown alga Padina boergessenii against CCl4-induced nephrotoxicity in rats. Twenty-four Wistar albino rats were divided into four groups as follows: control group (saline), CCl4 group, CCl4+P. boergessenii extract group and P. boergessenii extract alone group. At the end of the experimental period, the animals are sacrificed and tissue samples (kidney) were collected. CCl4 at a dose of 2mL/kg, administered subcutaneously, produced significantly decreased activities of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and catalase (CAT). Histopathological examinations showed massive centrilobular necrosis and fat accumulation in CCl4-induced animals. In the protective test, especially in animals pretreated with P. boergessenii (150mg/kg) extract, there was a significant increase in antioxidant enzyme levels although there was no sign of abnormality in the kidney of rats pretreated with extract as evidenced by histopathological sections against CCl4-induced decrease of lipid peroxidation (TBARS). The ameliorative effect may be due to the presence of various bioactive compounds in alga. These results suggest that an extract of P. boergessenii is able to significantly alleviate the nephrotoxicity induced by CCl4 in Wistar rats

Sonochemical synthesis of CuO nanostructures and their morphology dependent optical and visible light driven photocatalytic properties

A controlled synthesis of CuO nanostructures with various morphologies were successfully achieved by presence/absence of low frequency (42 kHz) ultrasound with two different methods. The size, shape and morphology of the CuO nanostructures were tailored by altering the ultrasound, mode of addition and solvent medium. The crystalline structure and molecular vibrational modes of the prepared nanostructures were analysed through X-ray diffraction and FTIR measurement, respectively which confirmed that the nanostructures were phase pure high-quality CuO with monoclinic crystal structure. The morphological evaluation and elemental composition analysis were done using TEM and EDS attached with SEM, respectively. Furthermore, we demonstrated that the prepared CuO nanostructures could be served as an effective photocatalyst towards the degradation of methyl orange (MO) under visible light irradiation. Among the various nanostructures, the spherical shape CuO nanostructures were found to have the better catalytic activities towards MO dye degradation. The catalytic degradation performance of MO in the presence of CuO nanostructures showed the following order: spherical\nanorod \layered oval \nanoleaf \triangular \shuttles structures. The influence of loading and reusability of catalyst revealed that the efficiency of visible light assisted degradation of MO was effectively enhanced and more than 95 % of degradation was achieved after 3 cycle