Distribution of potentially pathogenic enteric bacteria in coastal sea waters along the Southern Kerala Coast, India.

This study evaluated the relationship between the traditional indicators of faecal pollution, total coliforms (TC), faecal coliforms (FC) and Faecalstreptococci (FS), and the presence of few potentially pathogenic enteric bacteria, Vibrio cholerae (VC), Vibrio parahaemolyticus (VP), Shigella spp. (SH) and Salmonella spp. (SL) in coastal sea water.

Seasonal dynamics of dissolved metals in surface coastal waters of southwest India.

Spatial and temporal variations in concentration of dissolved metals viz. Copper (Cu), Lead (Pb), Chromium (Cr), Nickel (Ni), Zinc (Zn), Cadmium (Cd) and Mercury (Hg) in surface waters of southwest coast of India were studied. Concentrations of metals showed an aberration both temporally and spatially.

Zooplankton's role in the distributional status of autochthonous Vibrio cholerae: a case study using principal component analysis.

Miscellaneous statistical approaches were applied to illustrate the influence exerted by different zooplankton groups on the survival and distributional status of autochthonous Vibrio cholerae in two diverse marine environments, Veli and Kochi, former with low nutrient loading and later with high nutrient loading. The data set has been factorised using principal component analysis (PCA) for extracting linear relationships existing among a set of variables. Box plots were derived from the PCA data and were graphically represented.

Graphene nanoribbons exfoliated from graphite surface dislocation bands by electrostatic force.

We have developed a novel technique to produce long and narrow graphene ribbons with smooth edges. This technique is free of any chemical treatments and involves a combination of two steps: (i) creation of surface dislocation ribbons by high velocity clusters impacting the graphite surface and (ii) electrostatic transferring of the dislocation ribbons to a desired substrate. The width of the ribbons can be controlled by varying the impact velocity of a cluster jet stream from a gas jet impactor.

Assessment of water quality using principal component analysis--a case study of the Mangalore coastal region, India.

Miscellanies of statistical approaches were employed to illustrate the real picture of quality environmental variables observed in a nationalized monitoring programme. The interpretation and evaluation of the quality data, that was observed, were made very easier by utilizing the wide scope of spectacular statistical software, SPSS 11.0 through the Principal Component Analysis (PCA).

Electrostatic deposition of graphene in a gaseous environment: a deterministic route for synthesizing rolled graphenes?

The synthesis of single-wall carbon nanotubes of desired diameters and chiralities is critical to the design of nanoscale electronic devices with desired properties. The existing methods are based on self-assembly, therefore lacking control over the diameters and chiralities. The present work reports a direct route for rolling graphene.

Electrostatic deposition of graphene.

Loose graphene sheets, one to a few atomic layers thick, are often observed on freshly cleaved HOPG surfaces. A straightforward technique using electrostatic attraction is demonstrated to transfer these graphene sheets to a selected substrate. Sheets from one to 22 layers thick have been transferred by this method.

Determination of the specific gravity of human pineal.

Specific gravity values for the pineal gland in any species are lacking. These data are necessary for calculating and interrelating pineal weight and volume. This report deals with the specific gravity of human pineal gland.