Ginkala Venkateswarlu

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The effect of different organic nitrogen compounds on the production of rifamycin SV by Amycolatopsis mediterranei MV35R and their optimum concentrations have been described. Results obtained indicate that rifamycin SV production increased from 4020 mg l-1 to 4575 mg l-1 when organic nitrogen compound uracil was added at 0.2% (w/v) concentration to the(More)
A dry ashing procedure is developed for the determination of As in organic rich matrices such as wheat flour, lichen and tobacco leaves. The volatility of As during dry ashing is avoided by the addition of palladium nitrate [Pd(NO(3))(2)]. The recovery of both As(III) and As(V) is found to be near quantitative. The residue after dry ashing is dissolved in(More)
In the image processing scenario the image enhancement takes high importance .Among so many image enhancement techniques the image enhancement is one of the main way. Visual information transmitted in the form of digital images is becoming a major method of communication in the modern age, but the image obtained after transmission is often corrupted with(More)
Studies were performed on the production of rifamycin SV, an ansamycin compound, extensively used for curing tuberculosis, leprosy and several other mycobacterial infections, using a strain of Amycolatopsis mediterranei MTCC17 in solid cultures. Wheat bran was employed as a solid substrate. The culture produced 4 g of rifamycin SV/kg of substrate.(More)
This paper deals with the effect of process parameters on the peak load and the energy absorption of the expansion of thin walled tubes using a die. The energy absorption and peak load during the expansion process were calculated for various punch angles (α) and with different expansion ratios (rp/ro) at different temperatures (T) by finite element analysis(More)
The applicability of polyaniline (PANI) for the on-line preconcentration and recovery of palladium from various water samples has been investigated. Batch experiments were performed to optimize conditions such as pH and contact time to achieve quantitative separation of Pd spiked at high (microg ml(-1)) and low levels (ng ml(-1)). During all the steps of(More)
Ionosphere plays a prominent role in satellite communications. The spatiotemporal variations of the ionosphere are identified by its Total Electronic Content (TEC) that can be estimated by using dual frequency GPS receiver's observations. To investigate the variability of ionospheric TEC, four slots of data each with two hours duration are considered. Four(More)
The energy storage devices are better in a motor drive system. The power distribution strategy for energy source, and energy storage, electric motor under various operation modes. This paper develops energy storage not implementing harmonic compensation in whole operating condition, also consisting peak power during acceleration absorbing regenerative power(More)
This paper described for computing the generalized cyclic convolution is also applied for the linear convolution by the modified Fermat number transform (FNT) number system. The Code conversion method and butterfly operation are proposed to perform both FNT and its inverse (IFNT) to their final stage in the convolution. The crosswise and vertical(More)