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Search Results: 1 - 10 of 200846 matches for " P. Gangopadhyay "
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Bacillary angiomatosis in an immune-competent patient
Gangopadhyay Ashok,Sharma P
Indian Journal of Dermatology, Venereology and Leprology , 2001,
Abstract: Bacillary angiomatosis is reported in a 65- year- old man. He was immunocompetent and the lesions subsided following treatment with oral erythromycin.
Klinefelter's syndrome with myopathy-A case report
Gangopadhyay P,Guha Debasish
Neurology India , 2004,
Cystathionine beta-synthase T833C/844ins68 polymorphism and stroke
Chandra G,Pal S,Gangopadhyay P
Neurology India , 2006,
Spacetime Dependent Lagrangians and Electrogravity Duality
Debashis Gangopadhyay,R. Bhattacharyya,L. P. Singh
Physics , 2007,
Abstract: We apply the spacetime dependent lagrangian formalism [1] to the action in general relativity. We obtain a Barriola-Vilenkin type monopole solution by exploiting theelectrogravity duality of the vacuum Einstein equations and using a modified definition of empty space. An {\it upper bound} is obtained on the monopole mass ${\tt M}$, ${\tt M}\leq e^{(1-\alpha)/\alpha}/(1-\alpha)^{2}{\tt G}$ where $\alpha = 2k $ is the global monopole charge. Keywords: global monopole, electrogravity duality, holographic principle. PACS: 11.15.-q, 11.27.+d, 14.80.Hv, 04.
Spacetime Dependent Lagrangians and the Barriola-Vilenkin Monopole Mass
Debashis Gangopadhyay,Rajsekhar Bhattacharyya,L. P. Singh
Physics , 2002,
Abstract: This paper has been withdrawn by the authors in order to replace it with a more correct treatment. The basic results remain the same but the treatment is more rigorously correct.
Effect of Exposure on Respiratory Function Status of Firefighters in an Accidental Fire in a Chemicals Warehouse
Chattopadhyay B.P.,Gangopadhyay P.,Alam J.,Roychowdhury A
Indian Journal of Occupational and Environmental Medicine , 2004,
Development of a High-Resolution Multiscale Modeling and Prediction System for Bay of Bengal, Part II: An Application to October 2008  [PDF]
Arun Chakraborty, Avijit Gangopadhyay
Open Journal of Marine Science (OJMS) , 2016, DOI: 10.4236/ojms.2016.61012
Abstract: A high-resolution (10 km × 10 km) multiscale ocean modeling system was developed for the Bay of Bengal (BOB) region for short-term ocean hindcasts/forecasts. A physical validation of this system that was based on climatological initialization and short-term simulations was presented in Part I of this series of studies. Realistic structures for prevalent eddies, fronts and gyres were reasonably reproduced and validated for three individual months (February, June and October). In this study, we present an application and synoptic validation of the system for October 2008 in a hindcast mode. The system is based on the Regional Ocean Modeling System (ROMS), which assimilates satellite andin-situmeasurements within the background climatology using an objective analysis to produce the synoptic initial condition for the model and/or to produce an estimation of the current ocean state. A meteorological forecast is then input into this synoptic three-dimensional ocean model to produce the ocean hindcast/forecast. The high-density Array for Real-time Geotropic Oceanography (ARGO) observations, and the Tropical Rain Measuring Mission (TRMM) satellite’s microwave imager (TMI) passes during the beginning of the month of October 2008, provided a unique opportunity for the system to assimilate thesein-situobservations at initialization. Then, the ARGO and TMI observations during the later part of October 2008 were used for the statistical validation of the system’s fidelity. The validation shows that the hindcast/forecast system can reasonably predict the ocean currents, temperature and salinity. The forecast error increases as the forecast time window increases, although the system has a reasonable predictability for up to seven to ten days. The assimilation of both
Development of a High-Resolution Multiscale Modeling and Prediction System for Bay of Bengal, Part I: Climatology-Based Simulations  [PDF]
Arun Chakraborty, Avijit Gangopadhyay
Open Journal of Marine Science (OJMS) , 2016, DOI: 10.4236/ojms.2016.61013
Abstract: A high-resolution (10 km × 10 km) multiscale ocean modeling system was developed for short-term (1 - 2 weeks) ocean state hindcasting/forecasting in the Bay of Bengal (BOB) region. This paper is Part I of a two-part series of studies. The Regional Ocean Modeling System (ROMS) was implemented and initialized with Levitus 1/4° climatological fields for short-term forecasting. The results from these climatology-based model simulations for three representative months (February, June and October) in three different seasons (winter, summer and autumn) are discussed herein. This high-resolution model implementation simulates most of the observed dominant circulation features. The multiscale features during February include an anticyclonic basin-scalegyre with a strong western boundary current (WBC) in the western basin, the formation of several shallow mesoscale eddies in the head of the Bay and a cyclonic sub-basin-scale Myanmar Gyre in the northeast. During June, no well-defined boundary current is simulated along the Indian coast; instead, alternating cyclonic and anticyclonic eddies appear along the east coast with cross-basin eastward flow to support a deep cyclonic Andaman Gyre. In October, a basin-scale cyclonic gyre with a continuous well-defined East India Coastal Current (EICC), weak inflow from the Malacca Strait to the Andaman Sea and advection of BOB water into the Arabian Sea via the Palk Strait are simulated well by the model. A number of mesoscale eddies appear on the eastern half of the basin during October. Physical pattern of simulated eddies and transports across selected sections are validated against available drifter climatology, ARGO data and previous observations. Application of this system to synoptic short-term predictions for October 2008 will be presented in
High anorectal malformation in a five-month-old boy: a case report
Anand Pandey, Ajay N Gangopadhyay, Vijayendra Kumar, Shiv P Sharma
Journal of Medical Case Reports , 2010, DOI: 10.1186/1752-1947-4-296
Abstract: A five-month-old baby boy of Indian origin and nationality presented with anal atresia and associated rectourethral prostatic fistula. The anatomy of the malformation and our patient's good condition permitted a primary definitive repair of the anomaly. A brief review of the relevant literature is included.Delayed presentation of a patient with high anorectal malformation is rare. The appropriate treatment can be rewarding.Anorectal malformation (ARM) is one of the most common congenital defects having an incidence of between one per 1500 and one per 5000 live births [1,2]. This anomaly is characterized by an absent anal opening: the rectum may either communicate with the urinary tract by a fistula or end blind.ARM may present with a wide spectrum of defects, ranging from relatively low malformations to very complex high defects [2]. ARMs are usually diagnosed at birth. If not, almost all male patients present within the first few days of life with obstructive symptoms because of absent or narrow fistula. We present a male patient of high ARM, who exceptionally presented at the age of five months.A five-month-old baby boy of Indian origin and nationality presented to the department of Pediatric Surgery at the Institute of Medical Sciences, Banaras Hindu University with absent anal opening, along with passage of flatus and feces through the urethra since birth without any problem (Figures 1 and 2). On examination, his abdomen was soft and the right undescended testis was palpated in the inguinal canal. He was also passing clear urine intermittently. No other anomalies were noticed. Abdominal ultrasound showed normal findings. The babygram revealed no bony abnormality. Bowel gas was seen up to the pelvis.Our patient was planned for the primary posterosagittal anorectoplasty (PSARP). Intra-operatively, a large rectourethral prostatic fistula was found and closed. The post-operative period was uneventful (Figure 3) and the patient was discharged in a satisfactory condit
Effects of thermal treatments and germination on physico-chemical properties of corn flour
P Bhattacharyya, U Ghosh, H Gangopadhyay, U Raychaudhuri
African Journal of Biotechnology , 2007,
Abstract: Certain physico-chemical properties including viscoelasticity, crystallinity and maltose content of corn depends on the gelatinization of starch under different treatments. Three different treatments were performed; boiling in water, steam heating, and germination. The effects of gelatinization on viscoelastic property of corn starch were measured and the morphological changes of corn after different treatments were determined by scanning electron microscope (SEM). Various grooves and fissures on the exterior surface of the granules were noticed in the treated sample compared to control. The crystallinity of corn after different treatments was determined by X-ray diffraction studies (XRD). The control showed higher crystallinity than that of thermal treated samples.
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