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1. The influence of sires on gestation periods ofAmrit Mahal, Gir, Hallikar, Kangayam,Kankrej, Ongole, Sindhi (2 herds) andTharparker breeds of Indian cattle was studied from the records of 45 sires maintained at different farms in India. Only gestation periods terminating in normal births were considered and only bulls with a minimum of 2 calves of the(More)
We report here fabrication of interdigitated photoconductive antenna (iPCA) terahertz (THz) emitters based on plasmonic electrode design. Novel design of this iPCA enables it to work without microlens array focusing, which is otherwise required for photo excitation of selective photoconductive regions to avoid the destructive interference of emitted THz(More)
We report here a photoconductive material for THz detection with sub-picosecond carrier lifetime made by C(12) (Carbon) irradiation on commercially available semi-insulating (SI) GaAs. We are able to reduce the carrier lifetime of SI-GaAs down to sub-picosecond by irradiating it with various irradiation dosages of Carbon (C(12)) ions. With an increase of(More)
The emergence of high position resolution (∼10 μm) silicon detectors in recent times have highlighted the urgent need for the development of new automated optical scanners of micron level resolution suited for characterizing microscopic features of these detectors. More specifically, for the newly developed silicon photo-multipliers (SiPM) that are compact,(More)
In an attempt further to test Berg’s inference that there are “much more numerous sterility mutations in theX-chromosome than in the second chromosome and possibly more than in all the autosomes taken together”, experiments were devised to find the frequency of the “male-specific”. (producing sterility in the males only, leaving the females fertile) and(More)
We demonstrate continuous wave (CW) terahertz generation from antennas fabricated on C12-irradiated semi-insulating (SI) GaAs substrates. The dark current drawn by the antennas fabricated on irradiated substrates is ∼3 to 4 orders of magnitude lower compared to antennas fabricated on un-irradiated substrates, while the photocurrents decrease by only ∼1.5(More)
1. An investigation was carried out inDrosophila melanogasler to find out the effect of an unchanged chromosome II and changing the remaining chromosomes on the fecundity and hatchability. The stocks selected differed distinctly from each other in respect of both the traits. They were N-2 which was a normal wild type strain maintained in the laboratory and(More)
The structure and several spectroscopic features along with reactivity parameters of the compound 4-(6-methoxy-2-naphthyl)-2-butanone (Nabumetone) have been studied using experimental techniques and tools derived from quantum chemical calculations. Structure optimization is followed by force field calculations based on density functional theory (DFT) at the(More)