Concave grating spectrometer Patent

Concave grating spectrometer for use in near and vacuum ultraviolet region

Factor analysis of diversity in the genus sorghum

This article does not have an abstract

Computer programmes for some problems in Biometrical Genetics. I. Use of Mahalanobis' D<SUP>2</SUP> in classificatory problems

This article does not have an abstract

Kinetics of Oxidation of Methyl Orange & Methyl Red by V(V)*

16-1

Laser microprobe for the study of noble gases and nitrogen in single grains: a case study of individual chondrules from the Dhajala meteorite

A laser microprobe capable of analysing nitrogen and noble gases in individual grains with masses less than a milligram is described. It can be used in both continuous wave (CW) mode, useful for stepwise heating of an individual grain, as well as in pulsed mode, useful for ablating material from a small selected area of a sample, for gas extraction. We could achieve low blanks (in ccSTP units) for 4He(4.8 &#215; 10{-12}),22Ne(1.0 &#215; 10{-12}),36Ar(1.0 &#215; 10 -13),84Kr(2.9 &#215; 10{-14}),132 Xe(2.6 &#215; 10{-14}), and N (87 pg), using this system. Preliminary data for individual chondrules from the Dhajala meteorite show that noble gases and nitrogen from grains as small as 170 microgram can be analysed using the present laser microprobe setup. The amount of trapped neon in Dhajala chondrules is very small, and nitrogen in the chondrules is isotopically heavier as compared to the bulk meteorite

Multivariate analysis of genetic divergence in Eu sorghums

A study of the nature of genetic divergence in Sorghum by multivariate analysis was undertaken to examine the nature of differentiation within this genus and to improve the existing criteria of its classification. Forty-six populations of Eu-Sorghum representing its different series and sub-series were selected. Based on Mahalanobis D2-statistic, the population could be grouped into 15 clusters. The spatial disposition of the clusters and their relative divergence was in broad agreement with that of Snowden in seven clusters, but only in partial agreement in the other cases with the phylogenetic relations indicated by him. The grouping was confirmed by canonical analysis. After a comparison of the present results with those reported by others, the sub-genus Eu-Sorghum could be divided into nine species

Sub-specific differentiation in Nicotiana rustica

This article does not have an abstract

Some three dimensional elasto-dynamic solutions of layered shells

Three dimensional solutions for natural frequencies and mode shapes of layered composite shells obtained by using the finite layer method, are presented in this paper. Higher order theories for laminated shells are discussed

Model simulation of tide-induced currents in Gauthami-Godavari estuary

Predictive spatial distribution of flow field has been simulated from the time series data on currents and tides during dry season (11-19, February, 2009) in the Gauthami-Godavari Estuary utilizing TIDAL model. A 2D-Tidal Estuarine model has been considered (instead of 3D model) due to well-mixed type system and its circulation is dominated by tides during the observational period. The model forcing functions consist of wind and tidal elevations along the open boundaries and no fresh water inflow from the main stream and no land flood in river system. The bathymetry data of the river basin has been collected and supplemented to the model as one of the rigid boundary conditions to evaluate integration. The bottom roughness length (K) was adjusted to achieve model calibration and verification in model simulations of flow field. The model simulation results are in qualitative agreement with the observational data with calibrated bottom roughness length which is about 0.085 m. Model results reveal that the majority of flow was found to be along the channel axis (i.e. high iso-bath contour). During flood time, flow is south-west direction and it is changed to northeast direction during ebb period which is indicating that the model results resemble flow in the real eastern system