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Search Results: 1 - 10 of 20029 matches for " Chakraborty U "
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Acupuncture as a Modality in Buerger’s Disease
Ghatak RK,Chakraborty U
Indian Journal of Physical Medicine and Rehabilitation , 2009,
Abstract: A 32 yrs male patient presented with history ofclaudication pain and ulcers on left great and 2nd toes.He was a smoker. He was diagnosed as having Buerger’sdisease. The patient was treated with acupuncturetherapy, with remarkable subjective and objectiveimprovement. It is felt that acupuncture could be triedas a therapy in Buerger’s disease.
On slightly b-continuous functions
U. S. Chakraborty
International Journal of Contemporary Mathematical Sciences , 2012,
Abstract:
SynthesisofColloidalCuO/γ-Al2O3byMicroemulsionandItsCatalyticReductionofAromaticNitroCompounds
Sachin U. NANDANWAR,Mousumi CHAKRABORTY
催化学报 , 2012, DOI: 10.1016/S1872-2067(11)60433-6
Abstract: ?Monodispersedcolloidalcopperoxidenanoparticlesweresynthesizedbywater-in-oilmicroemulsionusingCuCl2·H2OandNaOH.TheeffectonCuOparticlesizewasstudiedbyvaryingthewater-to-surfactantmolarratio,precursorconcentrationandmolarratioofNaOHtoCuCl2.Themorphology,sizeandsizedistributionoftheparticleswerestudiedbytransmissionelectronmicroscopyanddynamiclightscattering.DispersiondestabilizationofthecolloidalcopperoxidenanoparticleswasdetectedbyaTurbiscanapparatus.CuO/γ-Al2O3catalystswerepreparedbydispersinghighlystableCuOnanoparticlesonγ-aluminabymechanicalstirring.Thecatalystswereanalyzedbyscanningelectronmicroscopy,transmissionelectronmicroscopy,X-rayphotoelectron,andX-raydiffraction,whichconfirmedtheuniformdispersionofCuOonthesupport.Thereductionofthenitroaromaticcompounds,4-nitrophenol,3-nitrophenol,and2-nitrophenol,werestudied.TheCuO/γ-Al2O3catalystswereactiveforthereductionofthesenitroaromaticcompounds.
Biochemical responses of tea plants induced by foliar infection with Exobasidium vexans
B.N. CHAKRABORTY, S. DUTTA and U. CHAKRABORTY
Indian Phytopathology , 2012,
Abstract: Biochemical response of tea plants growing in Darjeeling hills exposed to biotic stress due to blister blight infection caused by Exobasidium vexans Massee in the levels of proteins, proline, phenols and enzyme activities such as phenyl alanine ammonia lyase, polyphenol oxidase and peroxidase were studied. Activity of phenylalanine ammonia lyase registered a decline in infected leaves whereas peroxidase and poly phenol oxidase activity was higher. Analysis of peroxidase isozymes by polyacrylamide gel electrophoresis using benzidine as substrate showed four isozymes in healthy and five in infected leaves. One of the most significant changes was observed in proline content which increased markedly in blister infected leaves. Protein showed a decline at very early stages of infection. SDS-PAGE analysis revealed the loss of several proteins following infection. Total phenols were significantly higher in the infected leaves in comparison to the healthy ones. Antifungal activity of phenols from both healthy and blister infected leaves were detected following agar cup bioassay. Antifungal activity was higher in healthy leaves. HPLC analysis of catechin extract from healthy and infected leaves showed little qualitative difference but, some quantitative changes.
Stability and Equilibrium Analysis of Laneless Traffic with Local Control Laws
Rakesh U. Chavan,Debraj Chakraborty,D. Manjunath
Computer Science , 2015,
Abstract: In this paper, a new model for traffic on roads with multiple lanes is developed, where the vehicles do not adhere to a lane discipline. Assuming identical vehicles, the dynamics is split along two independent directions: the Y-axis representing the direction of motion and the X-axis representing the lateral or the direction perpendicular to the direction of motion. Different influence graphs are used to model the interaction between the vehicles in these two directions. The instantaneous accelerations of each car, in both X and Y directions, are functions of the measurements from the neighbouring cars according to these influence graphs. The stability and equilibrium spacings of the car formation is analyzed for usual traffic situations such as steady flow, obstacles, lane changing and rogue drivers arbitrarily changing positions inside the formation. Conditions are derived under which the formation maintains stability and the desired intercar spacing for each of these traffic events. Simulations for some of these scenarios are included.
Serological cross reactivity between Glomerella cingulata and Camellia sinensis
U. CHAKRABORTY, R. DAS, P. BASU, S. GUHA and B.N. CHAKRABORTY*
Indian Phytopathology , 2012,
Abstract: Pathogenicity of G/omerella cingulata (Stoneman) Spauld and Schrenk, causal agent of brown blight disease, tested under identical conditions following detached leaf and cut shoot inoculation techniques against fourteen varieties of tea [Camellia sinensis (L.) a.Kuntze] revealed that CP-1 and TV-26 were resistant, while TV-18 and Teen Ali-17/1/54 were susceptible. Polyclonal antisera were raised separately against antigen preparations from mycelia and cell wall of G. cingulata (isolate Gc-1), mycelia of F. oxysporum and leaf antigens of TV-18 and CP-1. Cross reactive antigen (CRA) were found among the susceptible varieties of tea and isolates of G. cingulata (Gc- 1, 2 and 3). Such antigens were not detected between resistant varieties of tea and isolates of G. cingulata (Gc-1, Gc-2 & Gc-3 ); non-pathogen (Fusarium oxysporum) and tea varieties; isolates of G. cingulata and F. oxysporum and between non-host (Glycine max, Cicer arietinum and Camellia japonicum) and G. cingulata. Antisera raised against cell wall preparations gave better recognition than that against mycelial preparations as observed in ELISA test with antigens of tea leaves of different ages.
Incorporation of turmeric-lime mixture during the preparation of tomato puree
C Dutta, BR Chowdhury, R Chakraborty, U Raychaudhuri
African Journal of Biotechnology , 2007,
Abstract: New types of tomato puree products were developed by blanching matured tomatoes (Lycopersicon esculentum) for 1 min, 2 min and 3 min individually with or without addition of the mixture of turmeric and lime during the blanching time. Soluble solid content and pH of the puree products were in therange of 11 - 12.6 Brix and 4.32 - 4.68 respectively. Total Hunt er Lab colour difference (DE) of treated sample following 2 min and 3 min blanching significantly (P < 0.05) higher than corresponding control samples. Again, 2 min- and 3 min-blanched treated samples did not have significantly different (P >0.05) Lab values (L, brightness; a, redness and b, yellowness). Also, yield stress (measure of flow behaviour) of 2 min-blanched samples (both treated and control) were the maximum among other corresponding puree samples. Thus, 2 min blanching time may be preferred for the preparation of this new type of turmeric-lime treated tomato puree product.
Synthesis of Colloidal Ruthenium Nanocatalyst by Chemical Reduction Method
R. G. Patharkar,S. U. Nandanwar,M. Chakraborty
Journal of Chemistry , 2013, DOI: 10.1155/2013/831694
Abstract:
Cognitive Radio Sensor Node Empowered Mobile Phone for Explosive Trace Detection  [PDF]
Swagata Roy Chatterjee, Mohuya Chakraborty, Jayanta Chakraborty
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2011, DOI: 10.4236/ijcns.2011.41004
Abstract: Usefulness of sensor network applications in human life is increasing day by day and the concept of wireless connection promises new application areas. Sensor network can be very beneficial in saving human life from terrorist attacks causing explosion in certain areas leading to casualties. But realization of the sensor network application in explosive detection requires high scalability of the sensor network and fast transmission of the information through real time monitoring and control. In this paper a novel mechanism for explosive trace detection in any populated area by the use of mobile telephony has been described. The aim is to create a system that will assure common men, local population and above all the nation a secured environment, without disturbing their freedom of movement. It would further help the police in detection of explosives more quickly, isolation of suicide bombers, remediation of explosives manufacturing sites, and forensic and criminal investigation. To achieve this, the paper has projected an idea that can combine the strength of the mobile phones, the polymer sensor and existing cellular network. The idea is to design and embed a tiny cog-nitive radio sensor node into the mobile phone that adapts to the changing environment by analyzing the RF surroundings and adjusting the spectrum use appropriately. The system would be capable of detecting explo-sives within a defined territory. It would communicate the location of the detected explosives to the respec-tive service provider, which in turn would inform the law and enforcement agency or Police.
Neural Network Approach to Response of Buildings Due to Earthquake Excitation  [PDF]
Sayantan Chakraborty, Prashant Kumar, Swapan Kumar Chakraborty
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.33063
Abstract: The present article investigates the physical phenomena associated with the wave passage effect into a building considering the ground floor as the soft floor with the conformity of the up-to-date scenario of the construction of high rise buildings, due to shear excitation of the base. The aim of the study is to analyse the post-earthquake situation of the building in respect to its health. With this vision, the ensuing problem on two-dimensional building models, non-incorporating soil-structure interaction, is being tackled by both analytical and neural network approaches. Computational results from both ends (of the approaches) show that the wave energy does not always propagate from the ground into the building, but for lower frequency range it sails to the building without any disturbances. However, for higher frequency range, the computational results show that the building experiences large “torsional” deformations, as a result the building may collapse. Finally, both the approaches maintain a good agreement among themselves. The present investigation may lead to a long way in contributing to better and more rational, simplified design criteria.
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