Assessment of groundwater potential using geospatial techniques for urbanized Mambakkam mini-watershed, Kancheepuram district, India

1856-1865Evaluation of groundwater potential and mapping using geospatial platform is crucial especially for semi-arid hard rock and coastal adjoining terrain to identify the zones of very good, good, moderate and poor groundwater potential. The Mambakkam mini watershed, Tamil Nadu (India) is situated towards the southern part of Chennai city. It is experiencing commercial development of groundwater in addition with escalating domestic and industrial demands. The present study is aimed to develop the mapping of groundwater potential zones for the selected urbanized watershed by using the remote sensing and geospatial techniques. Data like water level, water quality, rainfall, climatology and geophysical resistivity from various sources and satellite imageries have been used for this study to observe the changes on the sources of water resource system. The Inverse Distance Weighted (IDW) method was used for generating the thematic layers of rainfall, depth to bed rock, weathered rock, jointed rock and water levels. The generated village wise groundwater potential map has shown a vast spatial variability of ground water potential and the area that belongs to the “very good” potential category is quite less in the entire study area (12 %) which alarms the development of existing groundwater resource. The study concluded that considerable falling trend of groundwater level during pre-monsoon showing the alarming threat for further development. Thus the presented study identified the risk of groundwater development and provides guidelines to water resource mangers and village officials to recommend conservation and protection strategies against the uncontrolled commercial development especially on the identified poor groundwater potential zones

The peri-urban to urban groundwater transfer and its societal implications in Chennai, south India – A case study

The aquifer of the peri-urban/rural areas of Chennai Metropolitan Area in Tamil Nadu acts as a source of informal water market, and a huge amount of water is transferred and marketed by entrepreneurs, such as private water suppliers and packaged water industries. Water transfer from agricultural to non agricultural uses is not only common in India but most of the water starved developing countries experience it. It leads to temporal and spatial changes in the groundwater quantity and quality, and generates the inequity and affordability issues in accessing the water especially to the peri-urban poor. The paper analyzed the above issue with a case study conducted at Perumbakkam, a Chennai peri-urban village. The multivariate statistical analysis of field findings has been conducted in the peri-urban village for understanding the socio-economic implications of the groundwater market. The study identifies the major findings due to the prevailing informal groundwater market and emphasizes the institutional mechanism through regulatory and legal measures to protect the resource base and conservation and restoration mechanism to replenish the depleting resources.</jats:p

An evaluation of starch obtained from plantain <i>Musa paradisiaca</i> as a binder and disintegrant for compressed tablets

Abstract The binding and disintegrant properties of plantain starch obtained from Musa paradisiaca, family Musaceae, have been evaluated. Its effect in tablets of paracetamol and chloroquine phosphate on their physical properties such as hardness, friability and disintegration time was compared with tablets prepared with maize starch. The results show that plantain starch can be used both as a tablet binder and disintegrant in the preparation of tablets and the indication is that plantain starch has about twice the binding efficiency and about half the disintegrant power of maize starch.</jats:p

A Child’s Search for a Diagnosis-A Case Report of Subcutaneous Zygomycosis

Basidiobolus species are filamentous fungi belonging to the order Entomophthorales. Unlike other zygomycetes, Basidiobolus species can cause subcutaneous zygomycosis in healthy individuals.Basidiobolus ranarum was first described as an isolate from frogs in 1886 and was later cultured from the intestinal contents and the excreta of frogs[2]. It is commonly found in soil, decaying vegetable matter, and the gastrointestinal tracts of amphibians, reptiles, fish and bats.3 Basidiobolus is endemic in Uganda and certain areas of Africa, India and other parts of Asia</jats:p

Studies in N-Haloarenesulphonamides & Their Salts & Chloramines: Part III-Potentiometric Titrations of Some Reductants Against Chloramine T & Chloramine B

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