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Search Results: 1 - 10 of 201092 matches for " Putta. P. Varma "
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One pot synthesis of 2-hydroxy pyrrolidine derivatives
Putta. P. Varma,Kittappa. M. Mahadevan,Abdul Khader,Vijaykumar Hulikal
Organic Communications , 2011,
Abstract: One pot reaction of various 2-amino-thiadiazoles or thiazoles and 2,3- dihydrofuran under mild condition in presence of CeCl 3.7H 2O as catalyst transformed the amino group of 2-amino-thiadiazoles or thiazoles into a medicinally important 2-hydroxy pyrrolidine ring system in good to excellent yields. The generality of the reaction was sufficiently investigated and demonstrated. The new reaction path way for this conversion was established by spectroscopic and analytical methods.
A Study of Superconducting La2CuO4 via Generalized BCS Equations Incorporating Chemical Potential  [PDF]
G. P. Malik, V. S. Varma
World Journal of Condensed Matter Physics (WJCMP) , 2015, DOI: 10.4236/wjcmp.2015.53017
Abstract: We address the Tc (s) and multiple gaps of La2CuO4 (LCO) via generalized BCS equations incorporating chemical potential. Appealing to the structure of the unit cell of LCO, which comprises sub- lattices with LaO and OLa layers and brings into play two Debye temperatures, the concept of itinerancy of electrons, and an insight provided by Tacon et al.’s recent experimental work concerned with YBa2Cu3O6.6 which reveals that very large electron-phonon coupling can occur in a very narrow region of phonon wavelengths, we are enabled to account for all values of its gap-to-Tc ratio (2Δ0/kBTc), i.e., 4.3, 7.1, ≈8 and 9.3, which were reported by Bednorz and Müller in their Nobel lecture. Our study predicts carrier concentrations corresponding to these gap values to lie in the range 1.3 × 1021 - 5.6 × 1021 cm-3, and values of 0.27 - 0.29 and 1.12 for the gap-to-Tc ratios of the smaller gaps.
Elements of Magical Rituals: A Traditional Practice of North Kerala  [PDF]
P. Vijisha, E. K. Govinda Varma Raja
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.311034
Abstract: The strengthening of mental power will help the patients to overcome their unrest. Mental unrest of an individual is the product of the folk which he/she belongs. The folk itself have found out the remedy for it as traditional rituals. The traditional practitioners have developed certain tools and technologies with the help of indigenous knowledge. It was examined with the case studies practised in north Kerala.
Existence of Untouchability towards Maari Theyyam
—A Traditional Art Form of Kerala

P. Vijisha, E. K. Govinda Varma Raja
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.43032
Abstract: The renaissance movement led by Vaikundam Swamikal, Sreekumara Gurudevan, Ayyankali, Chattambi Swamikal, Dr. V. V. Velukkutty Arayan, Sahodharan Ayyappan, Swami Vakbhadananda and Swami Anantha Theertha was helping to eradicate untouchability from Kerala. The Temple entry proclamation by the erstwhile king of Travancore late Sri Chitra Thirunal Rama Varma Maharaja on his 24th birthday (12th November 1936) proclaimed that all Hindus by birth or faith, despite their caste will be allowed enter to all temples under the governance of Travancore state. The Temple Madayi Kavu1 is traditionally owned by Kolathiri King of Chirakkal. But it is controlled by the Malabar Devaswam Board, an authorised body of Government of Kerala. The goddess of this temple is the family deity of Travancore royal family. Maari Theyyam is a traditional ritual performance of Madayi Kavu. This ritual is not allowed to be observed in the premises of Madayi Kavu. All other Theyyams are allowed to be performed in the premises of the temple. Maari Theyyam is performed away from the temple premises. It is a kind of untouchability towards Maari Theyyam. Here, we try to examine the pros and cons of the untouchability of the ritual Maari Theyyam.
P. Surendra Varma
Journal of Global Research in Computer Science , 2013,
Abstract: - Round Robin (RR) performs optimally in timeshared systems because each process is given an equal amount of static time quantum. But the effectiveness of RR algorithm solely depends upon the choice of time quantum. I have made a comprehensive study and analysis of RR algorithm and SRBRR algorithm. I have proposed an improved version of SRBRR (Shortest Remaining Burst Round Robin) by assigning the processor to processes with shortest remaining burst in round robin manner using the best possible time quantum. Time quantum is computed with the help of median and highest burst time. My experimental analysis shows that ISRBRR performs better than RR algorithm and SRBRR in terms of reducing the number of context switches, average waiting time and average turnaround time. Keywords: Operating System, Scheduling Algorithm, Round Robin, Context switch, Waiting time, Turnaround time.
Design of Modified HRRN Scheduling Algorithm for priority systems Using Hybrid Priority scheme
P. Surendra Varma
Journal of Telematics and Informatics , 2013, DOI: 10.12928/jti.v1i1.979
Abstract: The basic aim of this paper is to design a scheduling algorithm which is suitable for priority systems and it should not suffer with starvation or indefinite postponement. Highest Response Ratio Next (HRRN) scheduling is a non-preemptive discipline, in which the priority of each job is dependent on its estimated run time, and also the amount of time it has spent waiting. Jobs gain higher priority the longer they wait, which prevents indefinite postponement (process starvation). In fact, the jobs that have spent a long time waiting compete against those estimated to have short run times. HRRN prevents indefinite postponements but does not suitable for priority systems. So, modifying HRRN in such a way that it will be suitable for priority based systems.
Studies on determining favourable factors for the germination of conidia of Oidium mangiferae
Indian Phytopathology , 2012,
Abstract: The powdery mildew caused by Oidium mangiferae Berthet produces huge number of air-borne conidia which germinate under the influence of temperature and relative humidity. To find out their optimum values, studies have been carried out on the laboratory observations of conidia germination and germ tube growth. The optimum values for temperature corresponding to maximum rate for germination and germ tube growth are of great relevance from the epidemiologicalstandpoint. On the basis of models
Comparison of Transmission Loss Allocation Methods in Deregulated Power System
P. Srinivasa Varma,V. Sankar
International Journal of Advanced Electrical and Electronics Engineering , 2012,
Abstract: The problem of Transmission Loss Allocation (TLA) among the power system agents has become more important with the increase of the competition level in electricity markets. In this paper different Transmission Loss Allocation methodologies are considered. The comparison between them, which is not available in the literature, has been made. The methods considered in this paper are; Postage Stamp (PS), Proportional Sharing Principle (PSP) and Loss Function Decomposition (LFD) methods. Algorithms have been implemented for these methods. These methodologies are illustrated on IEEE 5-bus system and IEEE-14 bus system. The theoretical values are verified with the simulation results obtained from the MATLAB programming.
Design And Evaluation of Gastroretentive Floating Drug Delivery System of Metoprolol Tartrate
M. Mohan Varma,P. Anita
RGUHS Journal of Pharmaceutical Sciences , 2012,
Abstract: Drugs that have narrow absorption window in the gastrointestinal tract (GIT) will have poor absorption. For these drugs, gastroretentive drug delivery systems offer the advantage in prolonging the gastric emptying time. Metoprolol tartrate is an antihypertensive drug,it has low elimination half life: 3–4 hrs.The floating tablets of metoprolol tartrate were prepared to increase the gastric retention and to improve the bioavailability of the drug. The rapid gastro-intestinal transit could result in incomplete drug release from the drug delivery system above the absorption zone leading to poor bioavailability of the drug. The floating tablets were formulated using HPMC K4M and HPMC K100M as the release retardant polymers, and sodium bicarbonate as the gas generating agent to reduce the floating lag time. The tablets were prepared by direct compression.The formulated tablets were evaluated for weight variation, hardness, friability, swelling index floating lag time, total floating time and dissolution rate in pH 1.2. The floating tablets extended the drug release up to 8 hrs. The drug-polymer interaction was evaluated by fourier transform infrared spectroscopy (FTIR). The FTIR study indicated the lack of drug-polymer interaction. The optimized formulation (F8), containing drug: HPMC K100M, at 1:4 ratio, showed very good result and extended the release up to 8 hours. The drug release from the optimized formulation followed first order kinetics (correlation coefficient, r value 0.981) and non-fickian diffusion (n=0.623). The similarity factor calculated for batch F8(optimized formulation) was 55.46%, and its dissolution profile was similar to the dissolution profile of the branded extended release tablet.
Success and Family Life of Women Entrepreneurs in a Backward Province – A Case Study
International Journal of Innovative Research in Science, Engineering and Technology , 2013,
Abstract: Women in India, in general are faced certain problems to lead their life in business. The role of women entrepreneurs is to explore the prospects of starting new enterprise with new innovations and must be ready to take the risks, control of business and provide effective leadership in all aspects of business. Indian women give more emphasis to family ties and relationships. Married women have to make a fine balance between business and home. A sample of 300 women entrepreneurs was selected for the present study from Anantapur district of Rayalaseema region in Andhra Pradesh State, India to analyse the reasons for their success and impact on the relationship with the family members and chores.
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