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Search Results: 1 - 10 of 418395 matches for " S. V. Satish "
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Improvement of Position Accuracy with GAGAN and the Impact of Scintillation on GNSS  [PDF]
Surendra Sunda, B. M. Vyas, S. V. Satish, K. S. Parikh
Positioning (POS) , 2013, DOI: 10.4236/pos.2013.44028
Abstract:

GAGAN is an Indian implementation of Satellite Based Augmentation System (SBAS), developed jointly by Airports Authority of India (AAI) and Indian Space Research Organisation (ISRO). It is in final operational phase with all the required ground and space segments ready. With the availability of GAGAN signal-in-space (SIS), the improvement in position solution is investigated using the two collocated dual frequency GPS receivers. One of the receivers was configured as SBAS receiver and the other was kept as GPS stand-alone receiver. It is found that accuracy in position improved significantly in SBAS receiver due to GAGAN correction. The impact of scintillation on GNSS was also investigated in terms of position degradation and loss of lock of the satellite signals. The manyfold effects of scintillation on GPS and SBAS are discussed in detail. The results indicate ~15% reduction in number of measurements due to loss of lock during severe scintillation.

Financialisation Impacting Diversification? Evidence from Indian Equity & Commodity Markets  [PDF]
Siddula Narsimhulu, D. Satish, S. V. Satyanarayana
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.65088
Abstract: Investors are constantly looking at diversification of risks by combining equities with other assets in their portfolio. Apart from fixed income securities and real estate related instruments, commodities are also being increasingly used as a portfolio diversification strategy. But the overwhelming presence of financial institutions and funds in the commodity markets has resulted in financialisation of commodity markets leading to a greater correlation between equities and commodities especially during recession. This has lead to a reduction in diversification benefits. The paper attempts to study the diversification benefits of investing both in Indian commodities and equities markets in different economic environments using VAR Impulse Response Functions with an aim to find out whether financialization exists. The research found that there was absence of interdependence between the Indian equity and commodities markets which offered a good opportunity for diversification. Also the equities market and commodities market during recession were totally decoupled which showed that the financialization was not present in Indian commodities market and there was a greater scope for diversification during the recession.
Stability Lobe Diagram for High Speed Machining Processes:Comparison of Experimental and Analytical Methods – A Review
PALPANDIAN P,Prabhu Raja V,Satish Babu S
International Journal of Innovative Research in Science, Engineering and Technology , 2013,
Abstract: Chatter is a complicated problem faced by machine tool operators. Chatter is a self-excited vibration that can occur during machining operations. This is an undesirable phenomenon which limits the productivity of the machine. A lot of techniques have been developed to control the chatter. Stability lobe diagram is an effective tool which helps the operator to select specific spindle speeds during production to avoid chatter in machine. Stability lobes are plotted against axial depth of cut Vs spindle speed, which shows a boundary between stable and unstable cutting regions. Numerous experimental and analytical techniques have been developed to establish stability lobe diagram. This paper presents a review on experimental and analytical methods of obtaining stability lobe diagram in high speed milling operation.
Sources of resistance to turcicum leaf blight (Exserohilum turcicum) of maize for NEH region
RAM DUTTA*, NGASHEPAM ANITA, SATISH CHANDRA and S.V. NGACHAN
Indian Phytopathology , 2012,
Abstract:
A Novel PWM Scheme for a Three-Level Voltage Source Inverter Fed Induction Motor
P. Satish Kumar,J. Amarnath,S. V. L. Narasimham
International Journal of Applied Mathematics and Computation , 2009,
Abstract: This paper presents a space vector PWM scheme for a three level GTO voltage source inverter fed induction motor. This SVPWM method provides high safety voltages with less harmonic components compared to two level structures and reduces the switching losses by limiting the switching to the two thirds of the pulse duty cycle. The principle of SVPWM method and voltage vector selection procedure for two level and three level inverters are described in detail. The theoretical study was numerically simulated and high power and high voltage three-level GTO inverters applied to induction motors drives.
A study on the nature and magnitude of variations in different traits in sugarcane
V.K. Tyagi, Satish Sharma and S.B. Bhardwaj
Electronic Journal of Plant Breeding , 2011,
Abstract: Nature and magnitude of the variation for different agronomic traits in sugarcane under subtropical conditions of North-western Uttar Pradesh was studied. An estimation of heritability and genetic advance of these components under different environmental conditions was worked out. Fourteen sugarcane genotypes in three crop year experiment were analysed for 15 different characters and variance at phenotypic and genotypic levels, broad sense heritability, genetic advance and pooled analysis of variance were worked out. Coefficients of variation were high for the number of canes per plot, cane yield, cane weight, commercial cane sugar at 8 month stage and for sugar yield at harvesting. The highest heritability values were obtained for juice brix %, juice sucrose % and CCS % at 12 month stage, juice brix %, juice sucrose % at 8 month, cane weight, cane yield and sugar yield per plot. The lowest heritability values were observed for number of internodes, CCS % at 8 month stage, cane diameter and juice extraction % at 12 month stage. Genetic Advance was high for cane weight, cane height, number of canes per plot and cane yield. High magnitude of coefficient of variations, high heritability and maximum genetic gain for number of millable canes, cane weight and cane height showed emphatic role of these characters in clonal selection for improvement in cane and sugar yield. Variance analysis indicated significant genetic differences among the varieties for all characters.
Comparative bioequivalence studies of tramadol hydrochloride sustained-release 200 mg tablets
Suhas S Khandave, Satish V Sawant, Santosh S Joshi, et al
Drug Design, Development and Therapy , 2010, DOI: http://dx.doi.org/10.2147/DDDT.S15133
Abstract: mparative bioequivalence studies of tramadol hydrochloride sustained-release 200 mg tablets Original Research (8629) Total Article Views Authors: Suhas S Khandave, Satish V Sawant, Santosh S Joshi, et al Published Date November 2010 Volume 2010:4 Pages 367 - 374 DOI: http://dx.doi.org/10.2147/DDDT.S15133 Suhas S Khandave1, Satish V Sawant1, Santosh S Joshi1, Yatish K Bansal2, Sonal S Kadam2 1Accutest Research Laboratories (I) Private Limited, Koparkhirne, Navi Mumbai, Maharashtra, India; 2Ipca Laboratories Limited, Kandivli Mumbai, Maharashtra, India Background: Tramadol hydrochloride is available as 50 mg immediate-release (IR) and 100 mg, 200 mg, and 300 mg sustained-release (SR) tablets. The recommended dose of tramadol is 50–100 mg IR tablets every 4–6 hours. The tramadol SR 200 mg tablet is a better therapeutic option, with a reduced frequency of dosing, and improved patient compliance and quality of life. The present study evaluated the bioequivalence of a generic tramadol SR 200 mg tablet. Methods: A comparative in vitro dissolution study was performed on the test and reference products, followed by two separate single-dose bioequivalence studies under fasting and fed conditions and one multiple-dose bioequivalence study under fasting conditions. These bioequivalence studies were conducted in healthy human subjects using an open-label, randomized, two-treatment, two-period, two-sequence, crossover design. The oral administration of the test and reference products was done on day 1 for both the single-dose studies and on days 1–5 for the multiple-dose study in each study period as per the randomization code. Serial blood samples were collected at predefined time points in all the studies. Analysis of plasma concentrations of tramadol and O-desmethyltramadol (the M1 metabolite) was done by a validated liquid chromatography-mass spectrometry analytical method. The standard acceptance criterion of bioequivalence was applied on log-transformed pharmacokinetic parameters for tramadol and its M1 metabolite. Results: The ratios for geometric least-square means and 90% confidence intervals were within the acceptance range of 80%–125% for log-transformed primary pharmacokinetic parameters for tramadol and its M1 metabolite in all the three studies. Conclusion: The test product is bioequivalent to the reference product in terms of rate and extent of absorption, as evident from the single-dose and multiple-dose studies. Both the treatments were well tolerated.
Comparative bioequivalence studies of tramadol hydrochloride sustained-release 200 mg tablets
Suhas S Khandave,Satish V Sawant,Santosh S Joshi,et al
Drug Design, Development and Therapy , 2010,
Abstract: Suhas S Khandave1, Satish V Sawant1, Santosh S Joshi1, Yatish K Bansal2, Sonal S Kadam21Accutest Research Laboratories (I) Private Limited, Koparkhirne, Navi Mumbai, Maharashtra, India; 2Ipca Laboratories Limited, Kandivli Mumbai, Maharashtra, IndiaBackground: Tramadol hydrochloride is available as 50 mg immediate-release (IR) and 100 mg, 200 mg, and 300 mg sustained-release (SR) tablets. The recommended dose of tramadol is 50–100 mg IR tablets every 4–6 hours. The tramadol SR 200 mg tablet is a better therapeutic option, with a reduced frequency of dosing, and improved patient compliance and quality of life. The present study evaluated the bioequivalence of a generic tramadol SR 200 mg tablet.Methods: A comparative in vitro dissolution study was performed on the test and reference products, followed by two separate single-dose bioequivalence studies under fasting and fed conditions and one multiple-dose bioequivalence study under fasting conditions. These bioequivalence studies were conducted in healthy human subjects using an open-label, randomized, two-treatment, two-period, two-sequence, crossover design. The oral administration of the test and reference products was done on day 1 for both the single-dose studies and on days 1–5 for the multiple-dose study in each study period as per the randomization code. Serial blood samples were collected at predefined time points in all the studies. Analysis of plasma concentrations of tramadol and O-desmethyltramadol (the M1 metabolite) was done by a validated liquid chromatography-mass spectrometry analytical method. The standard acceptance criterion of bioequivalence was applied on log-transformed pharmacokinetic parameters for tramadol and its M1 metabolite.Results: The ratios for geometric least-square means and 90% confidence intervals were within the acceptance range of 80%–125% for log-transformed primary pharmacokinetic parameters for tramadol and its M1 metabolite in all the three studies.Conclusion: The test product is bioequivalent to the reference product in terms of rate and extent of absorption, as evident from the single-dose and multiple-dose studies. Both the treatments were well tolerated.Keywords: tramadol, multiple-dose, steady state, bioequivalence
Aldose Reductase Inhibition Prevents Metaplasia of Airway Epithelial Cells
Umesh C. S. Yadav,Leopoldo Aguilera-Aguirre,Kota V. Ramana,Istvan Boldogh,Satish K. Srivastava
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0014440
Abstract: Goblet cell metaplasia that causes mucus hypersecretion and obstruction in the airway lumen could be life threatening in asthma and chronic obstructive pulmonary disease patients. Inflammatory cytokines such as IL-13 mediate the transformation of airway ciliary epithelial cells to mucin-secreting goblet cells in acute as well as chronic airway inflammatory diseases. However, no effective and specific pharmacologic treatment is currently available. Here, we investigated the mechanisms by which aldose reductase (AR) regulates the mucus cell metaplasia in vitro and in vivo.
Assessment of Biodegradability of Synthetic Tanning Agents Used in Leather Tanning Process
Phaniendra.A,Ramachandra Rao. C.S.V,Satish Babu. R,Rema. T
International Journal of Engineering and Technology , 2011,
Abstract: The goal of this research was to assess the biodegradability of two synthetic tanning agents (syntans), Phenol condensation product and Nitrogen containing resin using Respirometry. The evaluation involved the analysis of oxygen uptake rate (OUR), profiles by respirometry. The study was conducted with different syntan concentrations of 50mg/L, 100mg/L, 150mg/L and 200mg/L. The oxygen uptake rate (OUR) of mixed liquid is 60 mg/L h with 50mg/L phenol condensation product and is found to be higher than with the concentrations 100, 150 and 200 mg/L h. The percent chemical oxygen demand (%COD) removal was decreased with increased syntan concentration indicating high rates ofbiodegradation at low concentration and toxicity impacts or low rates of biodegradation at higher concentrations. Whereas the Nitrogen Containing Resin showed complete inhibition on oxygen uptake rate of mixed liquor at all concentrations and very low % COD removals as well showing less biodegradability or potential toxic impact on the activated sludge.
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