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Search Results: 1 - 10 of 195143 matches for " G Rao "
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Prof. Dr. B. V. Satyanarayana (30-1-1927 - 15-8-2005)
Rao G
Indian Journal of Dermatology, Venereology and Leprology , 2005,
Abstract:
Selection of Suitable Features for Modeling the Durations of Syllables  [PDF]
Krothapalli S. Rao, Shashidhar G. Koolagudi
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.312129
Abstract: Acoustic analysis and synthesis experiments have shown that duration and intonation patterns are the two most important prosodic features responsible for the quality of synthesized speech. In this paper a set of features are proposed which will influence the duration patterns of the sequence of the sound units. These features are derived from the results of the duration analysis. Duration analysis provides a rough estimate of features, which affect the duration patterns of the sequence of the sound units. But, the prediction of durations from these features using either linear models or with a fixed rulebase is not accurate. From the analysis it is observed that there exists a gross trend in durations of syllables with respect to syllable position in the phrase, syllable position in the word, word position in the phrase, syllable identity and the context of the syllable (preceding and the following syllables). These features can be further used to predict the durations of the syllables more accurately by exploring various nonlinear models. For analying the durations of sound units, broadcast news data in Telugu is used as the speech corpus. The prediction accuracy of the duration models developed using rulebases and neural networks is evaluated using the objective measures such as percentage of syllables predicted within the specified deviation, average prediction error (µ), standard deviation (σ) and correlation coefficient (γ).
Comparison of Alkaline Treatment of Lead Contaminated Wastewater Using Lime and Sodium Hydroxide  [PDF]
Sudhakar M. Rao, G. C. Raju
Journal of Water Resource and Protection (JWARP) , 2010, DOI: 10.4236/jwarp.2010.23032
Abstract: A lead-acid storage battery manufacturing industry in India produces several thousand liters of lead con-taminated acidic wastewater on a daily basis and uses hydrated lime to render the lead-contaminated acidic wastewater alkaline (pH = 8.0). Alkaline treatment of the acidic wastewater with lime though a cost-effective method, generates copious amount of lead-contaminated gypsum sludge. Other alkali agents such as sodium hydroxide, sodium carbonate and dolomite are also used for alkali treatment of the acid wastewaters. The present paper compares the relative efficiency of hydrated lime and 0.05 M to 1 M NaOH solutions with re-spect to 1) amounts of sludge produced, 2) immobilization of the soluble lead in the acidic wastewater (AWW) and 3) increase in TDS (total dissolved solids) levels upon treatment of AWW with NaOH solutions and lime. The study also performs equilibrium speciation upon alkaline treatment of AWW with lime and NaOH (sodium hydroxide) solutions using the Visual MINTEQ program to understand the chemical reac-tions occurring during treatment process.
Evaluation of thermal characteristics of oscillating combustion
J Govardhan, G Rao
International Journal of Engineering, Science and Technology , 2010,
Abstract: In view of the economy and environmental impacts of the energy utilization, most of the heat transfer industries such as steel mills, glass plants and forging shops, foundry process and furnaces are focusing on energy efficient strategies and implementing new technologies. Gas Technology Institute (GTI) and Air Liquide Chicago Research Centre (ALCRC) have applied Oscillating Combustion Technology (OCT) on high temperature forged furnaces and reheat furnace for melting steel. The oscillating combustion requires a new hardware to incorporate on the fuel flow ahead of the burner. Solid State Proportionate (SSP) valves were used to create oscillations in the fuel flow. Natural gas was used as fuel and the technology was applied with air-gas, oxygen-gas, and excess level of air during the oscillating combustion. The present work deals with the implementation of OCT on liquid fuels at ambient conditions for melting aluminum metal in a fuel-fired crucible furnace which is of importance to foundry. Also, carrying out a study over the enhanced performance characteristics of oscillating combustion and comparing its thermal effects with those of the conventional combustion mode. The oscillating device, developed by the author, unlike other oscillating valves used earlier is a cam operated electro mechanical valve cause oscillations on the fuel flow. Experiments were conducted at varying air-fuel ratio, aluminum stocks, frequency and amplitude of the oscillating valve. The results when compared to the conventional combustion led to low fuel and specific energy consumption, enhanced heat transfer rate, increased furnace efficiency with visibly low volumes of flue gases with reduced emissions. The increased heat transfer rate and furnace efficiency was found to be in agreement with the results of GTI and ALCRC experiments. The reasons for such improvements in performance characteristics were verified by conducting experiments in the furnace by measuring the temperature distribution at designated point and calculating the heat transfer rate both for conventional and oscillating combustion mode. The analyses presented in this paper are for two levels of air-fuel ratios above and below the stoichiometric ratio, three different loads at 100 & 200amplitude and 5 & 10Hz frequency of oscillating valve.
Mobility and Energy-Based Performance Analysis of Temporally Ordered Routing Algorithm for Ad Hoc Wireless Network
Kulkarni Shrirang,Rao G
IETE Technical Review , 2008,
Abstract: A mobile ad hoc network consists of nodes that move arbitrarily and form dynamic topologies. The distributed nature of the networks and their link stability pose critical challenges in the design of routing protocols for them. Also, the lifetime of individual nodes in MANET is dependent on their battery power. This is critically important as the failure of battery resources may severely affect the communication capabilities of the node. Temporally ordered routing protocol (TORA) is a highly adaptive, loop-free, and distributed routing algorithm for mobile ad hoc networks (MANET). The protocol emphasizes on stable routes, with multi-path. Thus, we propose to investigate TORA under different mobility patterns and mobility models. We model TORA for its energy consumption capabilities, and extend the analysis for TCP and UDP-based traffic models.
The reactivity of sulf hydryl groups in the normal lenses of albino rat (Rattus norvegicus Berkenhaut) and guinea pig (Cavia porcellus Linnaeus)
Rawal U,Rao G
Indian Journal of Ophthalmology , 1979,
Abstract:
Enzymatic studies on the galactose exposed lens
Rawal U,Rao G
Indian Journal of Ophthalmology , 1980,
Abstract:
A detailed study of patent system for protection of inventions
Tulasi G,Rao B
Indian Journal of Pharmaceutical Sciences , 2008,
Abstract: Creations of brain are called intellect. Since these creations have good commercial value, are called as property. Inventions are intellectual property and can be protected by patents provided the invention is novel, non-obvious, useful and enabled. To have fare trade among member countries, World Trade Organisation proposed TRIPS agreement. India had taken necessary initiation by signing the World Trade Organisation agreement and transformed to global needs. The aim of this article is to enlighten pharmaceutical professionals especially in the field of research and development about planning inventions by thorough review of prior-art, which saves time and money. A thorough understanding is made possible by providing details of origin; present governing bodies, their role along with the Act that is safeguarding the patent system.
Neurosurgery and nitrous oxide: Not time yet for the last laugh?
Umamaheswara Rao G
Neurology India , 2011,
Abstract:
DEVELOPMENT OF MUCOADHESIVE FILMS FOR BUCCAL ADMINISTRATION OF MONTELUKAST
Raghavendra Rao N. G *
International Journal of Pharmacy and Technology , 2010,
Abstract: The Montelukast is a leukotrine receptor antagonist (LTRA) used for the maintenance treatment of asthma, chronic asthma attacks and to relieve symptoms of seasonal allergies. Montelukast biological half life is 2.5 to 5.5 hrs there by decreasing bioavailability upto 64%. So, in order to improve the bioavailability and efficacy, we have prepared buccal films of montelukast. In the present research work, buccal films were prepared using mucoadhesive polymers like HPMC (K4M), HPMC (50cps), HPMC (5 cps), Eudragit RL-100 and PVP K-30 by Solvent Casting technique. Buccal films were characterized for number of parameters like physical appearance and surface texture, weight uniformity, thickness, folding endurance, swelling index, surface pH, drug content uniformity, in vitro residence time, bursting strength, drug–excipients interaction study, and in vitro drug release study. All the prepared films were smooth surface and elegant texture. All the prepared films are weighing in between 26.33 to 37.66 mg. The thickness of the films was in the range of 0.246 to 0.373 mm. Folding endurance was in the range of 259 to 289. Swelling index in the range of 29.81 to 43.48 %. Surface pH was in the range of 6.00 to 6.83 pH. Drug content uniformity study showed uniform dispersion of the drug throughout the formulation in the range of 94.33 to 98.33 %. The in vitro residence time for all the films is in between 3.13 to 5.50 hrs. The bursting strength of films is in the range of 6.533 to 4.366 Kg/cm2. FT-IR studies revealed that,there was no incompatibility of the drug with the excipients used. In vitro drug release studies in the range of 67.35 to 93.62 at the end of 8th hrs.
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