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Search Results: 1 - 10 of 463275 matches for " Verma A "
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PERFORMANCE ANALYSIS OF WAVELET THRESHOLDING METHODS IN DENOISING OF AUDIO SIGNALS OF SOME INDIAN MUSICAL INSTRUMENTS
NEEMA VERMA,A. K. VERMA
International Journal of Engineering Science and Technology , 2012,
Abstract: It is known that signals obtained from the real world environment are corrupted by the noise. This noise causes poor performance of the relevant system and therefore must be removed effectively before further processing of signal. Research in the area of wavelets showed that wavelet shrinkage method performs well and efficiently as compared to other methods of denoising. In this paper, a comparative analysis of the performance of various wavelet coefficients hresholding methods presented. For thresholding of the wavelet coefficients, performance of some well-known thresholding methods i.e. Minimax, SURE (Heuristic and Rigorous) and Square-Root-Log are investigated in the presence of white Gaussian noise. The effect of wavelet decomposition levels is also investigated. For wavelet decomposition, Coif5 wavelet is used. The quality of denoised speech signal is expressed in terms of Peak Signal to Noise Ratio (PSNR) as compared to original noiseless speech signal.
Rough Set Techniques for 24 Hour Knowledge Factory
Niti Verma,Neha Verma,A. B. Patki
BVICAM's International Journal of Information Technology , 2012,
Abstract: 24 Hour Knowledge Factory [1] is the work culture that incorporates different people contributing together in collaborated manner on various modules of the same project. But as advancements occurred, it was found that the approach is as difficult to realize as it is to imagine. The smooth work flow amidst the personnel demands attention. This paper discusses a software solution to easily implement this idea by designing a workflow system between the programmers who are working in the different places in 24-Hour realm. The software presents the user interfaces to enable an employee to grasp the work done until now easily. The interface creates optimized tables generated using the rough set theory. This theory gives us a fair view of the work required by providing lower and upper approximation along with various rules that could help us to find these optimum sets. Software also facilitates the developer at the immediate next shift to be sure of the code in which he is going to work.
Rifabutin-loaded Floating Gellan Gum Beads: Effect of Calcium and Polymer Concentration on Incorporation Efficiency and Drug Release
A Verma, JK Pandit
Tropical Journal of Pharmaceutical Research , 2011,
Abstract: Purpose: To formulate rifabutin-loaded floating gel beads for stomach-specific release. Methods: Rifabutin-loaded floating gellan gum beads were prepared by ionotropic calcium-induced gelation in acidic medium. In-vitro buoyancy and drug release studies were performed using a USP dissolution apparatus type II in 0.01M HCl (ph 2.0) as the dissolution medium. The shape, surface morphology and internal structure of the dried beads were examined by scanning electron microscopy. Fourier Transform infrared spectroscopy (FTIR) was applied to investigate drug-polymer interactions. Results: The beads exhibited excellent buoyancy in simulated gastric fluid (SGF) and remained buoyant for 18 h. Drug incorporation efficiency of the beads ranged from 40 to 60 % and was dependent significantly (p < 0.05) on the concentrations of calcium ions and gellan gum. Drug release from the floating bead formulations was rapid, with > 50 % of the drug released within 1 h. Increased polymer concentration did not significantly (p < 0.05) retard drug release. Conclusion: Incorporation efficiency and release of rifabutin can be controlled by modulation of the investigated parameters. The developed floating gellan gum beads may be suitable for a potential oral stomach-specific release system to treat stomach infections such as multi-drug resistant Helicobacter pylori infection.
Government should enforce restrictions on medical practice by non-qualified persons as well as cross practice in India
Bansal R,Verma A
Indian Journal of Community Medicine , 2007,
Abstract:
Universal right to safe water
Verma A,Bansal R
Indian Journal of Community Medicine , 2007,
Abstract:
Angiomatous implantation cyst of the conjunctiva
Sinha Thakur,Verma A
Indian Journal of Ophthalmology , 1976,
Abstract:
Prevalence of hepatitis C and B viral markers in patients with chronic liver disease: A study from Northern India
Chakravarti A,Verma V
Indian Journal of Medical Microbiology , 2005,
Abstract:
Induced dwarf mutant in Catharanthus roseus with enhanced antibacterial activity
Verma A,Singh R
Indian Journal of Pharmaceutical Sciences , 2010,
Abstract: Evaluation of an ethyl methane sulphonate-induced dwarf mutant of Catharanthus roseus (L.) G. Don revealed that the mutant exhibited marked variation in morphometric parameters. The in vitro antibacterial activity of the aqueous and alcoholic leaf extracts of the mutant and control plants was investigated against medically important bacteria. The mutant leaf extracts showed enhanced antibacterial activity against all the tested bacteria except Bacillus subtilis.
The Laplace transform solution of a one dimensional groundwater recharge by spreading
A. P. VERMA
Annals of Geophysics , 1969, DOI: 10.4401/ag-5079
Abstract: An analytical expression for the moisture content distribution, in a problem of one dimensional vertical groundwater recharge, has been obtained by using the Laplace transform method. The average diffusivity coefficient over the whole range of moisture content is regarded as constant, and a linear variation of permeability with moisture content is assumed.
Sensitivity of Planktonic Aquatic Bacteria to Ciprofloxacin  [PDF]
Brij Verma, David Verma
Advances in Microbiology (AiM) , 2016, DOI: 10.4236/aim.2016.610074
Abstract: Many anthropogenic compounds, such as antibiotics, are found at trace levels (<μg·L-1) in aquatic and terrestrial systems. The effect of these compounds on the metabolism and function of microbes are difficult to assess because the assays used, such as the minimum inhibitory concentration (MIC) and the disk diffusion methods, lack the sensitivities to measure bacterial response to these very low levels of antibiotics on bacterial populations. Therefore, we theorized that the [3H] thymidine incorporation into DNA method might be sensitive in determining the effect of DNA inhibiting antibiotics on DNA production in planktonic bacteria in aquatic systems. Utilizing the 3H thymidine method, we measured the effects of ciprofloxacin on DNA production on planktonic bacteria in river and pond waters. Ciprofloxacin significantly (P < 0.02) inhibited river water bacteria at a concentration of 25 μg·L-1 but significant inhibition (P < 0.01) occurred at 1000 μg·L-1in pond water. The very low concentration required to inhibit DNA production in river water bacteria indicates that bacteria are extremely sensitive to antibiotics at very low concentrations. A likely reason for the differences in inhibition between the two waters is due to ciprofloxacin becoming bound, and possibly becoming biologically inactive, in the pond water due to higher dissolved organic carbon content. This work demonstrates that bacteria in some aquatic systems can be significantly impacted by low concentrations of anthropogenic antibiotics finding their way into these systems and that our assumptions as to the concentrations at which antibiotics affect microbes are highly underestimated.
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