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Biomedical subjects

A Selvam

Publications and source records attributed to A Selvam.

11 recordsLinked to original sources
PubMed2006

Phytoremediation and rehabilitation of municipal solid waste landfills and dumpsites: A brief review.

Environmental problems posed by municipal solid waste (MSW) are well documented. Scientifically designed landfills and/or open dumpsites are used to dispose MSW in many developed and developing countries. Non-availability of land and need to reuse the dumpsite space, especially in urban areas, call for rehabilitation of these facilities. A variety of options have been tried to achieve the goals of rehabilitation. In the last couple of decades, phytoremediation, collectively referring to all plant-based technologies using green plants to remediate and rehabilitate municipal solid waste landfills and dumpsites, has emerged as a potential candidate. Research and development activities relating to different aspects of phytoremediation are keeping the interest of scientists and engineers alive and enriching the literature. Being a subject of multi-disciplinary interest, findings of phytoremediation research has resulted in generation of enormous data and their publication in a variety of journals and books. Collating data from such diverse sources would help understand the dynamics and dimensions of landfill and dumpsite rehabilitation. This review is an attempt in this direction.

Biodegradation, Environmental↗
PubMed2005

Speciation of heavy metals during co-composting of sewage sludge with lime.

During composting the humification of organic matter will have a significant effect on the physicochemical form of existence of heavy metals. Therefore the present study was conducted to investigate the effect of co-composting sewage sludge with lime on heavy metal speciation and the changes in DTPA extractable metals. Metal speciation was conducted to evaluate the redistribution of Cu, Mn, Ni, Pb and Zn in sewage sludge composted with lime. Sewage sludge was mixed with sawdust in 2:1 (w/w fresh weight) and then composted with lime at 0%, 0.63%, 1% or 1.63% (dry weight) for 100 days. The lime addition did not cause any changes in the different forms of Cu and Mn, but the composting process caused transformations of residual form of Cu and Mn into oxidizable and reducible form, respectively. For Ni, the reducible form was mainly transformed into residual form and lime addition decreased this transformation. Major transformation of different forms of Pb was not found, however the residual form of Pb increased with lime addition. The predominant residual form of Zn was mainly transformed into oxidizable form and the lime addition reduced this transformation. Addition of lime to sewage sludge during composting resulted in lower DTPA extractable metal contents. Therefore, lime is a suitable material to co-compost with sewage sludge to reduce the availability of heavy metals.

Calcium Compounds↗
PubMed2001

The state of the health care workforce.

The shortage of health care workers has emerged as one of the field's biggest long-term challenges. The number of nurses, technicians, pharmacists and even housekeeping staff is on the way down, and worker dissatisfaction is on the way up. The health care workforce is slowly vanishing, and those workers who remain are unhappy. In this special fold-out section, Hospitals & Health Networks looks at this complex problem by analyzing how serious it really is and how bad it's going to get, taking a look at workers' frustration, and offering tips and resources to start to fix it.

Data Collection↗
PubMed1984

Spleno-gonadal fusion. A case report.

Examination of a two-year-old boy with bilateral inguinal hernia revealed a firm, smooth, non-tender mass continuous with the upper pole of the testis and extending upwards to the inguinal canal. Histological examination revealed splenic tissue. The article describes the details of this case of splenogonadal fusion and quotes 50 further references from literature.

Child, Preschool↗
PubMed1979

Leiomyoma of the duodenum presenting as a pyogenic liver abscess.

Leiomyoma of the duodenum is a rare condition which is most often diagnosed only as an incidental finding at post-mortem. It may present clinically with pain or haemorrhage. A case is described of degeneration of a leiomyoma of the fourth part of the duodenum giving rise to pyogenic liver abscess. There is no previous report of this association in the literature.

Duodenal Neoplasms↗
PubMed1977

Topical thrombin and control of wound haematoma.

The frequency of wound haematoma was investigated in 45 prophylactically heparinised patients undergoing abdominal surgery. Thrombin was applied locally to the wound in 15 patients, and in these patients wound haematoma was significantly less common than in the controls.

Abdomen↗