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Search Results: 1 - 10 of 306843 matches for " K.D.Syam Prasad "
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Application of STATCOM for Transient Stability Improvement and Performance Enhancement for a Wind Turbine Based Induction Generator
CH.Appala Narayana,D.V.N.Ananth,K.D.Syam Prasad,CH. Saibabu
International Journal of Soft Computing & Engineering , 2013,
Abstract: Voltage stability is a key issue to achieve theuninterrupted operation of wind farms equipped with squirrel cageinduction generators (SCIG) during grid faults. A StaticSynchronous Compensator (STATCOM) is applied to a powernetwork which includes a SCIG driven by a wind turbine, for steadystate voltage regulation and transient voltage stability support. TheSTATCOM is controlled by using PQ controller technique withvoltage regulation as basic scenario. The system is implementedusing MATLAB/ SIMULINK. Results illustrate that the STATCOMimproves the transient voltage stability and therefore helps the windturbine generator system to remain in service during grid faults.The time to reach steady state torque and speed without usingvector control or direct torque control can also be achieved by usingthis STATCOM control technique.
Dancing around the same spot? land reform and Ngos in Zimbabwe – ! e case of sos children’s villages
K.D Helliker
African Sociological Review / Revue Africaine de Sociologie , 2009,
Abstract: ! is paper discusses the rural-based operations of an international NGO in Mashonaland Central province, Zimbabwe. ! e aim is to highlight the contingent variation of NGO practices within de" ned limits. It does this through ‘thick description’ of the NGO of focus, the SOS Children’s Village, and compares its ‘handling‘ of the transforming countryside with the response of two other NGOs. It concludes by suggesting some conceptual points in understanding organizational dispositions of NGOs.
Die Kerkhervorming in Hongarye
K.D. Papp
HTS Theological Studies/Teologiese Studies , 2009, DOI: 10.4102/hts.v59i4.690
Abstract: The Reformation in Hungary This article focuses on a description of the Reformation in Hungary. Research into the historical backgrounds of the South-African clerical family Papp (of which the progenitor, the Reverend Kálmán Papp, is the only Hungarian immigrant to date to have become a minister in the reformed churches of South Africa), provided the stimulus for the exploration of this topic. The article briefly describes the political and ecclesiastical circumstances in Hungary prior to the Reformation, the course thereof, with specific reference to the most prominent Hungarian reformers, the outcome of the Reformation, as well as the birth of the Reformed Church of Hungary. The influence of Heinrich Bullinger, whose Confessio Helvetica Posterior was accepted as an official article of faith of this church in 1567, is dealt with in more detail. The article concludes with a few cursory remarks on the effects of the ecclesiastical and political developments in Hungary on the church in the sixteenth century and also provides some statistical data with regard to the present situation.
Indian Streams Research Journal , 2013,
Abstract: The present work in relation to occurrence of Deuteromycotinous fungal flora over the groundnut fields (Arachis hypogaea L.) was carried out in winter and summer seasons of the years 2009-10 and 2010-11 using continuous Volumetric Tilak air sampler. Results revealed that the spores of Aspergillus and Cercospora occurred predominantly. Aspergillus spores contributed 8.24% and 4.31% in I and II winter seasons and 3.67% and 4.08% during I and II summer seasons respectively. Cercospora spores contributed 7.85% and 7.02% in I and II winter seasons and 2.85% and 3.97% during I and II summer seasons respectively. Curvularia spores contributed 0.62% and 1.22% during I and II winter seasons and 0.32% and 0.98% during I and II summer seasons respectively. Cladosporium spores contributed 1.54% and 1.56% in I and II winter seasons and 1.35% and 1.73% in I and II summer seasons respectively.
Indian Streams Research Journal , 2013,
Abstract: During present studies total 9 types of Ascomycotina flora were identified over groundnut field by using Volumetric Tilak Air Sampler, Bitrimonospora contributed maximum of all spores 1.01% and 1.29% in I and II winter seasons respectively. Cucurbitaria contributed 0.42% and 0.17% during I and II winter seasons respectively. Nodulosphaeria occurred in 0.74% and 0.43% during I and II winter seasons respectively and Sporormia contributed 0.20% and 9.28% during I and II winter seasons respectively.
Brooding Space and Phase Feeding Strategies for White Pheasants
K.D. Roberson
International Journal of Poultry Science , 2005,
Abstract: Two experiments were conducted during a growout of male and female white pheasants to evaluate brooding space needed the first 6 wk and appropriate phase feeding strategies in the growing-finishing stages of growth. One-day-old chicks were placed into brooder pens with stocking rates of 150, 200 or 250 chicks/pen. Individual body weight and feed conversions for each pen were measured at 3 and 6 wk of age and litter moisture was measured at 3 wk. Birds were separated by gender at 6 wk and fed a common grower diet to 12 wk of age. At 12 wk, approximately half of the birds of each gender were fed either the grower diet or a finisher diet containing about 5 percentage units less crude protein than the grower diet. Body weight and feed conversion were measured on a pen basis at 12 wk for all birds, 17 wk for cockerels and 20 wk for hens. At market age, a sample of birds from each pen was selected to measure carcass yield and proximate analysis. There were no effects on body weight, coefficient of variation of body weight within pen, or feed conversion in the brooding period. High stocking density (250 chicks/pen) increased litter moisture at 3 wk. There were no dietary treatment effects on growth performance or carcass traits for either gender in the growing-finishing phases. The results showed that dietary protein could be reduced by 23% in a finisher diet fed after 12 wk of age to white pheasants.
Pakistan Journal of Botany , 2008,
Abstract: Eighteen genotypes including two check varieties were compared for yield and yield components. In this yield comparison lines 04 and 08 had the highest grain yield per plot. The subsequent line which had higher grain yield was 06. The possible reasons for the highest grain yield in line 04 could be due to the longest spike length, the highest number of spikelets per spike, higher number of grains per spike, higher grain yield of main spike and higher grain weight. Correlations were calculated for pooled yield and yield components data of various genotypes. Plant height showed positive and highly significant correlation with spike length, number of spikelets per spike, number of grains per spike and main spike grain yield but no correlation with number of grains per spikelet. Main spike grain yield exhibited positive and highly significant correlation with plant height, spike length, number of spikelets per spike, number of grains per main spike and number of grains per spikelet.
Optimal Parameter Updating in Assisted History Matching Using Streamlines as a Guide Mise à jour optimale des paramètres dans un processus de calage d’historique en s’aidant des lignes de courants
Kazemi A.,Stephen K.D.
Oil & Gas Science and Technology , 2013, DOI: 10.2516/ogst/2012071
Abstract: It is becoming more and more common to use assisted history matching methods to find different combinations of reservoir simulation models that agree with production data. Models with a large number of cells contain millions of unknown parameters and selecting the correct property values can be difficult. In practice, not all are important but finding which parts of the reservoir require updating is a challenge. In this work, we investigate methods of history matching by focusing on sub-sets of the full array model parameters and we use streamlines to help us choose where the model requires change. We identify localities in the reservoir that affect particular wells and we update reservoir properties (net:gross and permeability) within. We control changes using the pilot point method combined with a Neighbourhood Algorithm. We apply these approaches to the Nelson field (North Sea, UK) where uncertainty of the shale distribution controls predictions. The field is divided into localities based on the performance of the worst well predictions. We history match to improve production rates. The localities that require change are sufficiently separate that we can modify them one at a time. We also compare our result with a more ad hoc approach where the whole area around the well is modified. We find that, for the wells of interest, the streamline guided approach gives a 70% improvement in the history match from our starting model and around 40% reduction of misfit in prediction. This improvement is twice that of modifying the properties all around the well. L’utilisation de méthodes de calage d’historique assisté est de plus en plus fréquente pour déterminer différentes combinaisons de modèles de réservoir reproduisant les données de production. Les modèles comprenant un grand nombre de cellules contiennent des millions de paramètres inconnus, et leur attribuer des valeurs appropriées peut s’avérer difficile. En pratique, tous les paramètres n’ont pas la même importance, et identifier les zones du réservoir où les paramètres doivent être mis à jour est un défi. Dans cette étude, nous étudions les méthodes de calage d’historique en nous concentrant sur les sous-ensembles des paramètres du modèle, et nous utilisons les lignes de courant pour choisir les zones du modèle qui doivent être modifiées. Nous identifions les régions du réservoir affectant des puits particuliers et nous y ajustons les propriétés du réservoir (fraction de roche réservoir et perméabilité). Les changements sont réalisés à partir de la méthode des points pilotes associée à un algorithme d’o
Influence of Ethylenediaminetetraacetic Acid (EDTA) on the Ability of Fatty Acids to Inhibit the Growth of Bacteria Associated with Poultry Processing
A. Hinton,K.D. Ingram
International Journal of Poultry Science , 2011,
Abstract: The effect of Ethylenediaminetetraacetic Acid (EDTA) on the bactericidal activity of Fatty Acids (FA) was examined. A 0.5 M concentration of caproic, caprylic, capric, or lauric acid in 1.0 M Potassium Hydroxide (KOH) was supplemented with 0, 5, or 10 mM of EDTA and adjusted to pH 11.0 with citric acid. FA-KOH-EDTA was added to wells in agar seeded with 106 cfu/ml of Acinetobacter calcoaceticus, Aeromonas hydrophila, Campylobacter jejuni, Enterococcus faecalis, Escherichia coli, Listeria monocytogenes, Pseudomonas fluorescens, Salmonella typhimurium, or Staphylococcus simulans. Agar plates were incubated aerobically at 35C for 24 h, except for C. jejuni plates which were incubated microaerophilically at 42C for 48 h and zones of inhibition around the wells were measured. Results indicated that although caproic acid-KOH inhibited growth of C. jejuni only, caproic acid-KOH supplemented with EDTA produced significantly (p<0.05) larger zones of C. jejuni as well as zones of inhibition of A. calcoaceticus, E. faecalis and P. fluorescens. Caprylic acid-KOH produced zones of inhibition of all isolates except A. calcoaceticus, L. monocytogenes and S. simulans, but supplementation with EDTA produced zones of inhibition of the 3 isolates in addition to increases in the size of zones of inhibition of E. faecalis and Salmonella Typhimurium. Capric acid-KOH and lauric acid-KOH inhibited all isolates and supplementing both mixtures with EDTA generally produced larger zones of inhibition. Findings indicate that the addition of EDTA to formulations of FA-KOH may increase the ability of these sanitizers to reduce contamination of poultry processing operations.
Distribution of Vibrio parahaemolyticus in Marine Water, Sediments and Marine Invertebrates Collected from Rameswaram Island, Tamil Nadu, India
M. Kandhasamy,K.D. Arunachalam
Current Research in Bacteriology , 2008,
Abstract: Samples of seawater, sediments and invertebrates like bivalve (Dona faba and Scapharca inegerivalis) and gastropod (Littorina scabra and Cerithium trailli) were collected from the bathing place, Agnitheertham (AT) and Sewage Mixing Place (SMP) of Rameswaram island from August 2006 to July 2007. A total of twelve seawater samples and twelve sediments samples and 312 marine invertebrates were analyzed to detect the occurrence of Vibrio parahaemolyticus. V. parahaemolyticus was isolated from all the samples throughout the year. No seasonal variation in the counts of V. parahaemolyticus in water, sediments and marine invertebrates was observed. Water samples of SMP showed low density of V. parahaemolyticus compared to seawater of AT. Sediments of both AT and SMP contained high counts of V. parahaemolyticus compared to water samples. Invertebrates collected from both AT and SMP showed high counts of V. parahaemolyticus, compared to other samples. Invertebrates collected from SMP showed high density of V. parahaemolyticus. Among the marine invertebrates, bivalves at both AT and SMP showed high counts of V. parahaemolyticus. Bivalves collected from SMP showed high counts of V. parahaemolyticus compared to bivalves collected from AT. Occurrences of high counts of V. parahaemolyticus in marine organisms are dependent on the nature of feeding habits and the habitats from where the animals have been collected. Proper monitoring and attention should be given to the pilgrim town, Rameswaram, otherwise marine organisms may be infected by these pathogens, which may cause health hazards to the consumers.
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