P. K. Vijayan

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Studies on plankton of river Cauvery water, Mettur, Salem District, Tamil Nadu was made to assess the pollution of water from January 2003 to December 2003. The qualitative and quantitative evaluation of the variation in river water showed high quantity of phytoplankton and zooplankton population throughout the study period and rotifers formed dominated(More)
The most important evolutionary event in the success of commercial tea cultivation outside China in ~30 countries came about by the origin of India hybrid tea in India, derived from the extensive spontaneous hybridization that took place between the Assam type tea growing in the forest regions of Assam, North-East India and China type tea introduced from(More)
While synchrotron radiation is a powerful tool in material and biomedical sciences, it is still underutilized in plant research. This mini review attempts to introduce the potential of synchrotron-based spectroscopic and imaging methods and their applications to plant sciences. Synchrotron-based Fourier transform infrared spectroscopy, X-ray absorption and(More)
Heat exchanger CFD or computational fluid dynamics Conjugate heat transfer Heat transfer correlation a b s t r a c t Enhancement in heat transfer due to helical coils has been reported by many researchers. While the heat transfer characteristics of double pipe helical heat exchangers are available in the literature, there exists no published experimental or(More)
Phytoplankton biodiversity in the Parambikulam-Aliyar irrigational canals (Latitude 10º15'and 10º30' N and Longitude 76º50' and 77º10' E), Tamilnadu, South India were studied at five stations (S1-S5), Kulanaickenpatti canal (S1), Seelakkampatti canal (S2), Poosaripatti canal (S3), Kongalnagaram canal (S4) and Pethappampatti canal (S5). Totally 22 species of(More)
The present study estimates biological half-life (BHL) of tritium by analysing routine bioassay samples of radiation workers. During 2007-2009 year, 72,100 urine bioassay samples of the workers were analysed by liquid scintillation counting technique for internal dose monitoring for tritium. Two hundred and two subjects were taken for study with minimum 3(More)
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