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Search Results: 1 - 10 of 423227 matches for " S K PANDA "
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Seronegative necrolytic acral erythema: A distinct clinical subset?
Panda S,Lahiri K
Indian Journal of Dermatology , 2010,
Abstract: A patient was referred to us with asymptomatic, erythematous, nonitchy, scaly lesions present bilaterally on the dorsa of his feet and toes since the last 2 months. Both the legs had pitting edema as well. There were hyperkeratosis, focal parakeratosis, acanthosis and scattered spongiosis in the epidermis, and proliferation of capillaries with perivascular infiltration of lymphomononuclear cells in the dermis. There was no serological evidence of hepatitis C virus. Laboratory investigations revealed hypoalbuminemia and low-normal serum zinc. On clinicopathological correlation, we made a diagnosis of necrolytic acral erythema (NAE). The lesions responded dramatically to oral zinc sulfate and topical clobetasol propionate within 3 weeks with disappearance of edema and scaling and only a minimal residual erythema. This is the first reported case of NAE from Eastern India. NAE with negative serology for hepatitis C may be viewed as a distinct subset of the condition that had been originally described.
Beneficiation of Synthetic Iron Ore Kaolinite Mixture Using Selective Flocculation  [PDF]
Lopamudra Panda, S.K. Biswal, Vilas Tathavadkar
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2010, DOI: 10.4236/jmmce.2010.911070
Abstract: High demand of steel necessitates the use of low and lean grade iron ores by beneficiating them. However the fines, slimes and tailings generated in the process of beneficiating these low grade iron ores contains good amount of iron values. These iron values can be recovered by further beneficiating the fines, slimes and tailing by selective flocculation, which is defined as the selective agglomeration of iron ore particles using flocculant. In the present study an attempt has been taken to study the applicability of selective flocculation to Indian iron ore using corn starch as flocculant. A detail mineralogical and chemical characterization of iron ore and kaolinite were performed; in addition to this the flocculant was characterized by FTIR which gives an idea about the functional groups present in the flocculant. Different experiments were performed to optimize the operating parameters of the selective flocculation process. It was observed that product grade and recovery was strongly affected by pH of slurry and solid concentration compared to the flocculant dose. It was also found that the iron value can be upgraded to 63-66.9 % from the feed iron value of 37.65-55.33 % with the recovery of 63-90 %.
A Comparative Study of the Inclusion Complexes of 2-[5'-benzylidene-2'-phenyl-4'-oxo-1', 3'-thiazolidine]-1, 3-benzothiazole and 2-[5'-(p-N,N-dimethylamino- benzylidene)-2'-phenyl-4'-oxo-1', 3'-thiazolidine]-1, 3-benzothiazole withβ-Cyclodextrin
S. Panda,S. K. Dash
Journal of Chemistry , 2011, DOI: 10.1155/2011/265484
Abstract:
BOTANICAL STUDIES OF PLANTS SOLD IN MARKET AS ‘SAFED MUSLI’
S.K.Panda
International Journal of Pharmaceutical Research and Development , 2011,
Abstract: Six crude drug samples claimed as ‘Safed Musli’ were collected from different sources and studied for their botanical characters for proper identification. The botanical studies dealt with exomorphology of plant, morphological & microscopical root tuber characters and reported. Based on these observations, it is suggested that there is a need for the authentication of sample of the crude drug purchased from market at any form or stage under the trade name ‘Safed Musli’ before their utilization.
Simulation and RTDS Hardware Implementation of SHAF for Mitigation of Current Harmonics with p-q and Id-Iq Control Strategies Using PI Controller
S. Mikkili,A. K. Panda
Engineering, Technology & Applied Science Research , 2011,
Abstract: Control strategies for extracting the three-phase reference currents for shunt active power filters are compared, evaluating their performance under different source conditions in MATLAB/Simulink environment and also with Real Time Digital Simulator (RTDS) Hardware. When the supply voltages are balanced and sinusoidal, the two control strategies are converging to the same compensation characteristics but when the supply voltages are distorted and/or un-balanced sinusoidal, these control strategies result in different degrees of compensation in harmonics. The p-q control strategy is unable to yield an adequate solution when source voltages are not ideal. Extensive Simulations are carried out with PI controller for both p-q and Id-Iq control strategies for different voltage conditions and adequate results were presented. The 3-ph 4-wire SHAF system is also implemented on RTDS Hardware to further verify its effectiveness. The detailed simulation and RTDS Hardware results are included.
SHAF for Mitigation of Current Harmonics Using p-q Method with PI and Fuzzy Controllers
S. Mikkili,A. K. Panda
Engineering, Technology & Applied Science Research , 2011,
Abstract: Commencing with incandescent light bulb, every load today creates harmonics. Unfortunately, these loads vary with respect to their amount of harmonic content and response to problems caused by harmonics. Issue of Harmonics are of a greater concern to engineers, building designers and in industrial applications because they do more than distort voltage waveforms, they can overheat the building wiring, cause nuisance tripping, overheat transformer units, and cause random end-user equipment failures. Thus power quality has become more and more serious with each passing day. As a result active power filter (APF) gains much more attention due to excellent harmonic compensation. But still the performance of the active filter seems to be in contradictions with different control techniques. The main objective of this paper is to analyse shunt active filter with fuzzy and pi controllers. To carry out the analysis, we consider active and reactive power method (p-q). Extensive simulations were carried out; simulations were performed with balance, unbalanced and non sinusoidal conditions. Simulation results validate the dynamic behaviour of fuzzy logic controller over pi controller.
Electronic Structure and magnetism in Ir based double-perovskite Sr$_2$CeIrO$_6$
S. K. Panda,I. Dasgupta
Physics , 2013, DOI: 10.1142/S0217984913500413
Abstract: The electronic structure and magnetism of Sr$_2$CeIrO$_6$, an Ir-based double perovskite system has been investigated using first-principles calculations. We found that a strong spin-orbit coupling dictate the electronic and magnetic properties of this system. A small value of $U$ along with SOC could open up a gap at the Fermi level, offering the possibility of novel J$_{eff}$ = 1/2 Mott quantum state. Our calculations reveal that the magnetic ground state is antiferromagnetic in agreement with the magnetization data and provide the value of spin and orbital moment for this system which is in agreement with the other isostructural Ir-based compound.
Novel 1,3,4-(thiadiazol-2-ylamino) methyl-5-(pyridin-4-yl)-1,3,4-oxadiazol-2-thiones: synthesis, docking and antimycobacterial testing  [PDF]
Trupti S. Chitre, Santosh Panda, Shital M Patil, Aparna S. Chothe, G Vignesh, M. K. Kathiravan
Advances in Biological Chemistry (ABC) , 2011, DOI: 10.4236/abc.2011.12002
Abstract: In the present study, a novel series of Mannich bases of 3-substituted 5-(pyridin-4-yl)-1,3, 4-oxadiazol-2-thione derivatives were synthesized. Docking study was performed to rationalize the possible interactions between the synthesized com-pounds and active site of 14DM. The test compounds were screened for antimycobacterial activity using Middlebrook 7H9 medium against M. tuberculosis H37Rv (ATCC 27294) as well as Isoniazid (INH) resistant clinical strain. Among the series 5c and 5a are found to be most potent (susceptible) while the compound 5f did not show activity against M. tuberculosis H37Rv (resistant). The SAR study reveals the importance of substitutions at para position for good activity.
Chromium stress in plants
Panda, S.K.;Choudhury, S.;
Brazilian Journal of Plant Physiology , 2005, DOI: 10.1590/S1677-04202005000100008
Abstract: the article presents an overview of the mechanism of chromium stress in plants. chromium is known to be a toxic metal that can cause severe damage to plants and animals. chromium-induced oxidative stress involves induction of lipid peroxidation in plants that causes severe damage to cell membranes. oxidative stress induced by chromium initiates the degradation of photosynthetic pigments causing decline in growth. high chromium concentration can disturb the chloroplast ultrastructure thereby disturbing the photosynthetic process. like copper and iron, chromium is also a redox metal and its redox behaviour exceeds that of other metals like co, fe, zn, ni, etc. the redox behaviour can thus be attributed to the direct involvement of chromium in inducing oxidative stress in plants. chromium can affect antioxidant metabolism in plants. antioxidant enzymes like sod, cat, pox and gr are found to be susceptible to chromium resulting in a decline in their catalytic activities. this decline in antioxidant efficiency is an important factor in generating oxidative stress in plants under chromium stress. however, both metallothioneins and organic acids are important in plants as components of tolerance mechanisms and are also involved in detoxification of this toxic metal.
STUDY OF ANTIULCER ACTIVITY OF ROOTS OF ALANGIUM SALVIFOLIUM LINN. IN PYLORUS LIGATED RATS
Mohanty P.K.,Panda S.K.,Mishra S.K.,Panda P.K.
International Research Journal of Pharmacy , 2011,
Abstract: Different extracts of Alangium salvifolium Linn. roots were tested for its antiulcer activity in aspirin induced and pylorus ligated rats model. The effect was assessed by parameters like Total acidity(TA),Free acidity(FA),Peptic activity(PA), Ulcer Index(UI) .The antiucler activity of all extracts were compared to the standard drug ranitidine. The study showed that all extracts were showing reductions TA, PA, FA and UI among which the extract of petroleum ether showed significant reduction upon those parameters. Alangium salvifolium Linn (400mg/kg) (PE extracts) shows complete inhibition ulceration and results are at par with (5mg/kg) of ranitidine.
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