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Search Results: 1 - 10 of 404696 matches for " M. Krishna Mohan "
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An Application of the ABS Algorithm for Modeling Multiple Regression on Massive Data, Predicting the Most Influencing Factors  [PDF]
Soniya Lalwani, M. Krishna Mohan, Pooran Singh Solanki, Sorabh Singhal, Sandeep Mathur, Emilio Spedicato
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.46126
Abstract: Linear Least Square (LLS) is an approach for modeling regression analysis, applied for prediction and quantification of the strength of relationship between dependent and independent variables. There are a number of methods for solving the LLS problem but as soon as the data size increases and system becomes ill conditioned, the classical methods become complex at time and space with decreasing level of accuracy. Proposed work is based on prediction and quantification of the strength of relationship between sugar fasting and Post-Prandial (PP) sugar with 73 factors that affect diabetes. Due to the large number of independent variables, presented problem of diabetes prediction also presented similar complexities. ABS method is an approach proven better than other classical approaches for LLS problems. ABS algorithm has been applied for solving LLS problem. Hence, separate regression equations were obtained for sugar fasting and PP severity.
A Person Centered Network Concept: WPAN
D Vijaya kumar,B Krishna Mohan,M S R Shekar
Asian Journal of Information Technology , 2012,
Abstract: A Wireless Personal Area Network (WPAN) is a new wireless technology, which provides short-range (up to 10m) connectivity between the personal devices such as sensors, laptops, digital cameras, digital audio and video players etc., without cables. The wireless personal area network is new standard under development, as a part of the IEEE 802.15 standard. The IEEE 802.15 working group has concentrated on three classes of WPAN that are differentiated by data rate, power consumption and quality of service (QoS). The activity with in IEEE 802.15 is divided into four tasks groups i.e., 802.15.1 to 802.15.4 concentrated on different issues. Basically the WPAN uses two technologies to provide wireless connectivity among the personal devices. Those are IrDA-Data and Bluetooth. IrDA-Data (Infrared Data Association) is based on infrared (IR) communication and provides a simple, inexpensive means of short-range fast data rate for wireless data communication. Where as Bluetooth is based on radio frequency (RF) communication and provides short-range, low power, and high bandwidth wireless communications. The bluetooth radio operates in the 2.4 GHz ISM band. Bluetooth and IrDA technologies are compared based upon their wireless medium, mobility, and cost.
M. Vinduvahini,K. R. Roopashree,Suman Bhattacharya,K. Mohan Krishna
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811034799
Abstract: In the title compound, C23H19Cl2N5OS, the triazole ring makes dihedral angles of 24.81 (18), 69.94 (19) and 35.68 (18)° with the dichlorophenyl, benzene and methoxyphenyl rings, respectively. An intramolecular N—H...N hydrogen bond occurs. In the crystal, inversion dimers linked by pairs of N—H...S hydrogen bonds occur. In addition, there are weak C—H...π interactions involving the dichlorophenyl and triazole rings.
Evaluation of french bean germplasm for resistance to Mungbean yellow mosaic virus
Indian Phytopathology , 2011,
Validation of MODIS derived aerosol optical depth and an investigation on aerosol transport over the South East Arabian Sea during ARMEX-II
M. Aloysius, M. Mohan, S. Suresh Babu, K. Parameswaran,K. Krishna Moorthy
Annales Geophysicae (ANGEO) , 2009,
Abstract: The influence of wind and humidity on aerosol optical depth (AOD) over the Arabian sea is being investigated using MODIS (Moderate Resolution Imaging Spectroradiometer) Level 3 (Collection-5) and NCEP (National Centres for Environmental Prediction) reanalysis data for the second phase of the Arabian Sea Monsoon Experiment (ARMEX-II) over the South East Arabian Sea (SEAS) in the pre-monsoon period (14 March–10 April 2003). In order to qualify MODIS data for this study, MODIS aerosol parameters were first compared with ship borne Microtops measurements. This showed correlations 0.96–0.97 in the case of spectral AODs and a correlation 0.72 for the angstrom exponents. The daily AOD data from MODIS and winds from NCEP reveal that the ship observed episodic enhancement and decay of AOD at the TSL (Time Series Location) during 23 March–6 April 2003 was caused by the southward drift of an aerosol pocket driven by an intensification and reduction of surface pressure in the North Western Arabian Sea with a low altitude convergence prevailing over SEAS. The AOD increase coincided with a decrease in the Angstrom exponent and the fine mode fraction suggesting the pocket being dominated by coarse mode particles. A partial correlation analysis reveals that the lower altitude wind convergence is the most influential atmospheric variable in modulating AOD over the ARMEX-II domain during the TSL period. However, surface winds at a distant zone in the north/north west upwind direction also had a moderate influence, though with a lag of two days. But this effect was minor since the winds were not strong enough to produce marine aerosols matching with the high AODs over the ARMEX-II domain. These findings and the similarity between MODIS column mass concentration and the ship borne QCM (Quartz Crystal Microbalance) measured coarse mode mass concentration, suggest that the aerosol pocket was mostly composed of coarse mode mineral dust in the lower atmospheric altitudes transported from the Arabian deserts.
Extraction of bulk DNA from Thar Desert soils for optimization of PCR-DGGE based microbial community analysis
Kumar Gothwal,Raj; Kumar Nigam,Vinod; Mohan,M. Krishna; Sasmal,Dinakar; Ghosh,Purnendu;
Electronic Journal of Biotechnology , 2007,
Abstract: a reliable method for characterizing microbial communities on the basis of their differences in the 16s ribosomal rna (rrna) gene sequences in the hot arid zone sandy soils has been optimized. a desert plant (calligonum polygonoides) was chosen to provide the rhizospheric soil samples, collected from three different agro-ecological locations. total community dna was efficiently extracted at small-scale level using direct lysis with hot sodium dodecyl sulphate (sds), glass bead beating and finally subjecting the sandy soil to liquid nitrogen freeze-thaw cycles. to amplify v3 region of bacterial 16s rrna gene, universal conserved primers were used. second round polymerase chain reaction (pcr) was attempted to increase product concentration and to minimize the effect of inhibitory substances. to enhance the detection sensitivity of the denaturing gradient gel electrophoresis (dgge), the effect of change in template dna concentration was studied. the separation of bands were greatly enhanced in the fingerprints obtained after the second round of pcr representing low abundant species which were not differentiated at single optimized concentration of dna
Malignant gastrointestinal melanoma with an unknown primary
Krishna Mohan M.V.T,Rajappa Senthil,Reddy T,Paul T
Indian Journal of Medical and Paediatric Oncology , 2009,
Abstract: Malignant melanoma is rare in India; melanoma presenting as a metastatic disease with an unknown primary, involving the gastrointestinal tract without involving lymph nodes is extremely uncommon. We report a case of a 28-year-old male with a malignant melanoma metastasizing to stomach and liver with an unknown primary. Relevant literature is being reviewed.
Analgesic and anti-inflammatory activities of leaf extract of Kydia calycina Roxb.
Baburao Bhukya, Rama Narsimha Reddy Anreddy, Carey M. William and Krishna Mohan Gottumukkala
Bangladesh Journal of Pharmacology , 2009,
Abstract: The methanol extract of leaves of Kydia calycina Roxb. was screened for the analgesic (using hot plate test and acetic acid-induced writhing test in mice) and anti-inflammatory (using rat paw edema test) activity at the doses of 200 and 400 mg/kg body weight. A significant (p<0.0005) analgesic effect was observed with 200 mg/kg and 400 mg/kg in both tests. The maximum anti-inflammatory response was produced at 3 hour with extract doses of 200 and 400 mg/kg. These results suggest that the methanol extract of K. calycina has exhibited significant analgesic and anti-inflammatory effects, which were comparable with standard drugs.
S. Thanga Krishna Kumari,M. Packia Lincy,S. Muthukumarasamy,V. R. Mohan
Bioscience Discovery , 2012,
Abstract: This study was intended to evaluate the anti-inflammatory activity of the whole plant of Sarcostemma secamone. The anti-inflammatory activity study was carried out by using carrageenan induced paw edema. The ethanol extract of whole plant of Sarcostemma secamone was injected at different doses such as 150 and 300 mg/kg body weight and the study was compared with standard drug Indomethacin (10mg/kg). The extract exhibited significant anti-inflammatory activity, which supports the traditional medicinal utilization of the plant.
Studies on Structural, Spectral, and Optical Properties of Organic Nonlinear Optical Single Crystal: 2-Amino-4,6-dimethylpyrimidinium p-Hydroxybenzoate
S. Sudhahar,M. Krishna Kumar,A. Silambarasan,R. Muralidharan,R. Mohan Kumar
Journal of Materials , 2013, DOI: 10.1155/2013/539312
Abstract: 2-Amino-4,6-dimethylpyrimidinium p-hydroxybenzoate (ADPHB), a novel organic material, was synthesized, and crystals were grown by slow evaporation solution growth method. The cell parameters and crystalline perfection of the grown crystal were studied by single crystal and powder X-ray diffraction analyses. The presence of various functional groups of the grown crystal was confirmed using Fourier Transform infrared spectral analysis. UV-Visible spectrum shows that ADPHB crystals have high transmittance in the range 305–900?nm. The refractive index and transient photoluminescence properties of the grown crystal were analyzed. The laser induced surface damage threshold, optical birefringence, and second harmonic generation efficiency of the grown crystal were studied. 1. Introduction The research on new organic nonlinear optical (NLO) materials has attracted more research groups to them for their advantages over the inorganic nonlinear optical materials. The organic nonlinear optical molecules generally have a larger second-order nonlinear optical coefficient, and hence they are widely used in many applications such as optical communication, information storage, and optical switching [1–5]. The continuous research on organic NLO materials prompted to find many new nonlinear optical complexes engineered by organic molecules. For instance, nonlinear optical complexes formed from pyridine and carboxylic acids have been crystallized, and the structural, optical, and thermal properties of these crystals have been investigated due to their significant impact on laser technology, optical communication, and optical data storage technology [6]. Organic nonlinear optical compounds have large macroscopic second-order NLO susceptibilities , low dielectric dispersion, and ultrafast response to external electric fields [7, 8]. Organic nonlinear optical materials are formed based on NLO chromophores, which should be oriented in noncentrosymmetric way in order to exhibit macroscopic second-order nonlinear optical response. There are several different strategies resulting in macroscopic organic materials, including ferroelectric liquid crystals [9], self-assembled films [10], Langmuir-Blodgett films [11], and poled polymer films [12], as well as single crystals [13]. Among them, polar organic crystals are of special interest, since large NLO effect can be achieved due to the high density of chromophores in the crystals, as well as the most stable packing of chromophores in macroscopic materials, resulting in a superior photochemical and thermal stability as compared with
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