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Search Results: 1 - 10 of 201331 matches for " Bhattacharyya P "
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Short term adherence to inhalation therapy in asthma treated at a tertiary care clinic
Bhattacharyya P
Lung India , 2007,
Coexisting Order in the Pseudogap State of Cuprates
P. Bhattacharyya
Physics , 2007,
Abstract: A pseudogap is shown to be a magnetic diffuson (MD) in a state with classical localization order coexisting with Quantum Peierls (QP) order. A soft quantum localization mode, a phason, ensures scale invariance with strong correlations among different momentum states seen as a circular Fermi surface with a gap in ARPES when phase fluctuations are random. These correlations imply a state with coexisting order parameters at distinct length scales. Charge quantization and scale invariance accounts for the sharp peak in the excess tunneling current at V=0.
On Production of Hadrons in Proton-Proton Collisions at RHIC and LHC Energies and an Approach  [PDF]
P. Guptaroy, Goutam Sau, S. Bhattacharyya
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.31016
Abstract: From the very early days of Particle Physics, both experimental and theoretical studies on proton-proton collisions had occupied the center-stage of attention for very simple and obvious reasons. And this intense interest seems now to be at peak value with the onset of the Large Hadron Collider (LHC)-studies at TeV ranges of energies. In this work, we have chosen to analyse the inclusive cross-sections, the rapidity density, the and -ratio behaviours and the < pr > -values, in the light of the Sequential Chain Model (SCM). And the limited successes of the model encourage us to take up further studies on several other aspects of topmost importance in particle physics with the same approach.
Dynamic long distance management of patient variables: Application in ameliorating chemotherapy-associated side effects
Parikh P,Bhattacharyya G
Indian Journal of Cancer , 2008,
Production of J/Ψ-Particles at RHIC and LHC Energies: An Alternative “Psi”-Chology  [PDF]
P. Guptaroy, Goutam Sau, S. K. Biswas, S. Bhattacharyya
Open Journal of Microphysics (OJM) , 2012, DOI: 10.4236/ojm.2012.22003
Abstract: We attempt here to understand successfully some crucial aspects of J/Ψ-production in some high energy nuclear collisions in the light of a non-standard framework outlined in the text. It is found that the results arrived at with this main working approach here is fairly in good agreement with both the measured data and the results obtained on the basis of some other models of the ‘standard’ variety. Impact and implications of this comparative study have also been precisely highlighted in the end.
Some theorems on the explicit evaluation of Ramanujan's theta-functions
Nayandeep Deka Baruah,P. Bhattacharyya
International Journal of Mathematics and Mathematical Sciences , 2004, DOI: 10.1155/s0161171204111058
Abstract: Bruce C. Berndt et al. and Soon-Yi Kang have proved many of Ramanujan's formulas for the explicit evaluation of the Rogers-Ramanujan continued fraction and theta-functions in terms of Weber-Ramanujan class invariants. In this note, we give alternative proofs of some of these identities of theta-functions recorded by Ramanujan in his notebooks and deduce some formulas for the explicit evaluation of his theta-functions in terms of Weber-Ramanujan class invariants.
Quadrature Sine Wave Signals Generated by Selection Topology and its Components
P. Arivazhagan,Tarun Kanti Bhattacharyya
Bonfring International Journal of Power Systems and Integrated Circuits , 2012,
Abstract: This paper presents how to generate high frequency quadrature sinewave signals by selection topology and its active and passive components. Also, presents how to choose the value of inductor by different ways followed by performance comparison of various VCO topologies. The overall performance is displayed by all-pMOS VCO in terms of supply voltage and tuning range. The performance comparison of all-pMOS LC-VCO using various capacitive loads is discussed. All-pMOS LC-VCO with MOS capacitor switched capacitor array (SCA) followed by divider using CML latch without fixed tail current source is used for generation of high linearity quadrature signals. A three 2.4/4.8 GHz CMOS Quadrature Voltage Controlled Oscillators (QVCO?s) tuned by a diode varactor, inversion-mode pMOS varactor and an accumulation-mode nMOS varactor, respectively. The performance comparison of different varactors QVCO is simulated in terms of frequency range, tuning range, harmonic distortion and power consumption. The overall performance is displayed by inversion mode pMOS varactor QVCO. However, all the performances of varactor QVCO?s are significantly closer with all-pMOS LC VCO compared with other VCO topologies like all-nMOS LC-VCO and complementary cross coupled LC-VCO, due to low dc impedance path between the varactor to ground terminal. It displayed the power consumption of all varactor QVCO?s are equal. The QVCO?s were implemented in a 0.18 ?m standard CMOS technology as the supply voltage is 1 V. The pre and post layout simulation results are compared in terms of tuning range, phase noise, power dissipation, and harmonic distortion, self oscillation frequency of divider and reference voltage of inversion mode pMOS varctor QVCO.
Pure and Hybrid Evolutionary Computing in Global Optimization of Chemical Structures: from Atoms and Molecules to Clusters and Crystals
Kanchan Sarkar,S. P. Bhattacharyya
Computer Science , 2015,
Abstract: The growth of evolutionary computing (EC) methods in the exploration of complex potential energy landscapes of atomic and molecular clusters, as well as crystals over the last decade or so is reviewed. The trend of growth indicates that pure as well as hybrid evolutionary computing techniques in conjunction of DFT has been emerging as a powerful tool, although work on molecular clusters has been rather limited so far. Some attempts to solve the atomic/molecular Schrodinger Equation (SE) directly by genetic algorithms (GA) are available in literature. At the Born-Oppenheimer level of approximation GA-density methods appear to be a viable tool which could be more extensively explored in the coming years, specially in the context of designing molecules and materials with targeted properties.
Development of difference spectroscopic method for the estimation of Aspirin in formulation using hydrotropy
Bhattacharyya. I,Bhattacharyya. S.P,Talukdar. S,Medya. S
International Journal of Research in Pharmaceutical Sciences , 2011,
Abstract: A simple, precise and accurate difference spectroscopic method has been developed for the estimation of aspirin in pharmaceutical dosage form. The proposed method is based on the principle that aspirin can exhibit two different chemical forms which differ in absorption spectra in basic and acidic medium. Science the drug was not freely soluble in the distilled water, 1M sodium salicylate has been used as hydrotropic solubilising agent for aspirin to carryout its spectrophotometric analysis and make the process cost effective. The stock solution was prepared by taking water as solvent. Further dilutions were made by using 0.1M sodium hydroxide and 0.1M hydrochloric acid separately. The maxima and minima in the difference spectra of aspirin were 312nm and 285nm, respectively. Difference in absorbance between maxima and minima was calculated to find out the amplitude. The amplitude was plotted against concentration. Beer’s-Lambert’s law is valid in the concentration range 0.1-1μg/ml. The result of analysis was validated statistically and by recovery study.
Multiple soft tissue aneurysmal cysts: An occurrence after resection of primary aneurysmal bone cyst of fibula
Karkuzhali P,Bhattacharyya Mahuya,Sumitha P
Indian Journal of Orthopaedics , 2007,
Abstract: We report a case of multiple extraosseous aneurysmal cysts occurring in the muscle and subcutaneous plane of postero-lateral aspects of the upper right leg. They appeared about 15 months after resection of aneurysmal bone cyst of the upper end of the fibula. They varied in size from 2 cm to 5 cm. Radiologically they were well-defined lesions with central septate areas surrounded by a rim of calcification. Histologically they showed central cystic spaces separated by septa consisting of fibroblasts, osteoclast type of giant cells and reactive woven bone. Thus they showed histological similarity with aneurysmal bone cysts, but did not show any connection with the bone. Only very few examples of aneurysmal cysts of soft tissue had been described in the past one decade and they were reported in various locations including rare sites such as arterial wall and larynx. Recent cytogenetic analyses have shown abnormalities involving 17p11-13 and/or 16q22 in both osseous and extraosseous aneurysmal cysts indicating its probable neoplastic nature. Our case had unique features like multiplicity and occurrence after resection of primary aneurysmal bone cyst of the underlying bone.
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