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Search Results: 1 - 10 of 401179 matches for " M. Jeevitha "
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VLSI Based Combined Multiplier Architecture
M. Jeevitha,R. Muthaiah
Journal of Artificial Intelligence , 2013,
Abstract: In this study, an efficient design of multiplier is been designed. Since multipliers are the basic component in most of the electronic devices. A combination of multiplier is proposed based on the certain parameters in which VLSI design should concentrates, such as area, speed and power. This combination of multipliers is composed of two parts one is carry save array multiplier which concentrates in power dissipation by skipping the blocks when it is not needed. The second part is modified Booth Wallace tree multiplier which concentrates in the speed of the multiplier. This combination is found to produce better results in power and speed parameters resulting in an efficient multiplier design.
Highly Secured and Distortionless Video Watermarking using DCT and DWT Transforms
NITHIYAA M,JEEVITHA.S
International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering , 2013,
Abstract: Watermarking” is the process of computer-aided information hiding in a carrier signal. Digital watermarks may be used to verify the authenticity or integrity of the carrier signal. In video watermarking, the watermark can be added either to uncompressed data or compressed video streams. Practical video storage and distribution systems store and transmit the video sequences in compressed format, such as using a video on demand (VoD) service to avoid the process of fully decoding and encoding. Most video watermarking applications require the watermark to be embedded and detected in real time. Video watermarking scheme should be robust to geometric distortions, including rotation with cropping, scaling, aspect ratio change, frame dropping, and swapping. Both the Real-time performance and resistance to geometric distortions are important requirements. Discrete Wavelet Transform is invariant to rotation, scaling, and other geometric distortions and Discrete Cosine Transform coefficients Which are subsequently used to construct one-level DWT. This reduces the computational cost and meet the real-time requirement. An additional encryption and decryption keys were used to enhance the security without affecting the quality of video is proposed.
Impacts of Spirulina-Based Probiotic Feed on Swiss Albino Mice and its Effects on Digestive Enzymes
Baby Joseph,M.V. Jeevitha,S. Sujatha
Agricultural Journal , 2013, DOI: 10.3923/aj.2012.416.420
Abstract: Spirulina is widely used as food because of its rich nutrient contents. They play an important role in gut enzyme activity. The present study determined the digestive tract enzyme activity in spirulina administered Swiss albino mice using a set of biochemical parameters. The experimental group of Swiss albino mice was administered to two different concentrations of spirulina, i.e., 3 and 6% spirulina with 20 days experiment. When the mice were fed with 6% spirulina weight loss has been observed in the experimental animal. Weight loss has been observed about 2.0±0.72 μg mL-1 had been noticed when the Swiss albino mice is treated with concentration of 6% spirulina based probiotic feed. By contrast, weight gain of 5.16±2.68 mg was also observed when the experimental mice fed with 3% probiotic food. These results represented the variation in the enzyme activity after the treatment with experimental feed such as amylase level showed 18.9 μg mL-1 in the foregut and 11.3 μg mL-1 in the hindgut. Lipase level was 45.8 μg mL-1 in foregut and 47.8 μg mL-1 in hindgut. Catalase activity drastically decreased in mice treated with 6% spirulina and enzyme activity of lipase and catalase activity increased in mice treated with 3% spirulina. This study suggests that the spirulina provided in little amount does not show much variation, whereas the spirulina taken in high concentration shows slight changes in the production of digestive enzymes on the Swiss albino mice.
SiRNA Mediated Gene Silencing: A Mini Review
Baby Joseph,S.U. Ajisha,M.V. Jeevitha
Aceh International Journal of Science and Technology , 2012,
Abstract: RNA interference (RNAi) technology has become a novel tool for silencing gene expression in cells or organisms. RNA interference is the process that double-stranded RNA induces the homology-dependent degradation of cognate mRNA mediated by 21-23 nucleotide short interfering RNA (siRNA). RNA interference is a powerful mechanism of gene silencing that underlies many aspects of eukaryotic biology. On the molecular level, RNAi is mediated by a family of ribonucleoprotein (RNP) complexes called RNA-Induced Silencing Complexes (RISCs), which can be programmed to target virtually any nucleic acid sequence for silencing. The ability of RISC to locate target RNAs been co-opted by evolution many times to generate a broad spectrum of gene silencing pathways. The study about the Silencing of gene expression by siRNA is rapidly becoming a powerful tool for genetic analysis and represents a potential strategy for therapeutic product development. In this study, the applications of siRNA expressing recombinant adenovirus system in plants, animals and in cancer gene therapy are given importance with its modifications
Alterations of protein and DNA profiles of Zea mays L. under UV- B radiation
A. John De Britto,M. Jeevitha,T. Leon Stephan Raj
Journal of Stress Physiology & Biochemistry , 2011,
Abstract: UV radiation is an important stress factor for plants which may result in damage to genetic system and cell membranes and several metabolic processes. UV-B has greater damaging effects on plants because the cell macromolecules such as DNA and protein having strong absorption at 280-320 nm. In the present study, UV-B stress was given to the seeds of Zea mays L. at two different time intervals (30 and 60 min) and that stressed seeds were grown under normal environment condition. The leaves of 10th and 20th day seedlings were collected for the analysis of protein and DNA profiles. Protein was analyzed by SDS-PAGE and DNA was analyzed by Restriction enzymes. When compared with control plants, increased numbers of protein and DNA bands were observed in UV-B treated plants. The present study concluded that the plant synthesis new proteins and DNA under UV treatment for the adaptation to the environmental conditions. These stressed proteins could be used as biomarkers for identification of stressed plant. Identification of quantitative trait loci for UV stress resistance may well be an effective analytical tool. This approach is promising, considering that saturated DNA marker maps are now available for both genetic model plants and crop plants.
PHARMACOLOGICAL EFFECTS OF SNAKE VENOM L- AMINO ACID OXIDASES
Joseph Baby,Rajan Sheeja S,M.V Jeevitha,S.U Ajisha
International Journal of Research in Ayurveda and Pharmacy , 2011,
Abstract: L-Amino acid oxidases are flavoenzymes which catalyze the stereospecific oxidative deamination of an L-amino acid substrate to a corresponding a-ketoacid with hydrogen peroxide and ammonia production. These enzymes, which are widely distributed in many different organisms, exhibit a marked affinity for hydrophobic amino acids, including phenylalanine, tryptophan, tyrosine, and leucine. Snake venom LAAO induces platelet aggregation and cytotoxicity in various cancer cell lines. The enzyme has antibacterial activity inhibiting the growth of Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli) bacteria. Specific substrates for the isolated protein are L-phenylalanine, L-tryptophan, L-methionine and L-leucine. The enzyme is stable at low temperatures ( 20 oC, 70 oC) and loses its activity by heating at 70 oC. These enzymes are postulated to be toxins that may be involved in the allergic inflammatory response and specifically associated with mammalian endothelial cells damage. However, in the last decade these enzymes have become an interesting subject for pharmacological, structural and molecular characterizations. Structural and functional investigations of these enzymes can contribute to the advancement of toxinology and to the elaboration of novel therapeutic agents.
Dynamic Resource Management in MC-CDMA Based Cellular Wireless Networks
Dhananjay Kumar,Chenniappan Chellappan,Bala Jeevitha Vani
International Journal of Interactive Mobile Technologies (iJIM) , 2009, DOI: 10.3991/ijim.v3s2.890
Abstract: Most of the multimedia and Internet services today are asymmetric in nature, and require high data rate support. Allocating equal band width in both uplink and downlink is not prudent solution, as most of the time user requirement is more either in uplink or downlink. The Multi Carrier Code Division Multiple Access (MC-CDMA) system with time division duplex mode can easily met this requirement by dynamically declaring traffic direction in TDD slot, and adaptively allocating the sub channels. In this paper, we propose a adaptive slot and sub carrier allocation algorithm, that can be independently implemented in each cell of mobile communication network. Our analytical model is generalization of two cell concept to represent a multi cell model. Based on two cell concept four cases of interference pattern has been considered and simulated separately in presence of Additive White Gaussian Noise (AWGN) and Rayleigh Channel. The simulated result suggests the requirement of approximately 9dB of Signal to Noise Ratio (SNR) to maintain Bit Error Rate below 10-3. We also analyze the average delay incurred by the proposed algorithm in allocating resources.
Comparative Study of the Prevalence of Intestinal Parasites in Low Socioeconomic Areas from South Chennai, India
Jeevitha Dhanabal,Pradeep Pushparaj Selvadoss,Kanchana Muthuswamy
Journal of Parasitology Research , 2014, DOI: 10.1155/2014/630968
Abstract: Intestinal parasites cause one of the most important health problems through their effects in causing undernourishment morbidity and incapacitation due to their behavior particularly in children compared to adults. This study was intended to state the prevalence of intestinal parasites between the slum dwellers of different areas in south Chennai. Among the total of 256 samples collected between the ages of 0–50?yrs, 194 samples were positive. Standard laboratory techniques for parasitological diagnosis were carried out for each sample. Entamoeba coli (23%), Cyclospora sp. (22.2%), Entamoeba histolytica (21.8%), Giardia intestinalis (14.4%), Ascaris lumbricoides (6.2%), Trichuris trichiura (1.1%), and Hymenolepis nana (2.7%) were found in the dwellers of low socioeconomic areas. The data on the prevalence of parasites with respect to sex and age showed that the females harbored more numbers of parasites when compared to males. Further, with respect to age, children and teenagers had surplus parasites compared to old age groups. The percentage of educational status showed a reduction in the number of parasites in the higher education dwellers. These parasites could be prevented by possible grouping of better ecological design and hygiene. Conclusively, the examination of personal hygiene as well as routine medical examination and treatment is strongly recommended in the low socio-economic areas. 1. Introduction Intestinal parasitic diseases constitute a global health burden in numerous developing countries mainly due to fecal contamination of water and food [1], sympathetic climatic, and environmental and sociocultural factors enhancing parasitic transmissions [2, 3]. These parasites dwell in the gastrointestinal tract in humans and other animals [4]. In urbanized countries, protozoan parasites commonly cause gastrointestinal infections in contrast to helminthes [5]. Amoebiasis is the third most important reason for death from parasitic diseases wide-reaching, with its furthermost impact on the people of developing countries. The World Health Organization (WHO) estimates that approximately 50 million people worldwide endure insidious amoebic infection each year, resulting in 40–100 thousand deaths yearly [6, 7]. Current estimates suggested that Ascaris lumbricoides can infect over a billion, T. trichiura can infect 795 million, and hookworms can infect 740 million people [8]. Intestinal helminths hardly ever cause death. As an alternative, the saddle of disease is related to less mortality than to the chronic and subtle effects on health and nutritional
Automatic Wall Painting Robot
P.KEERTHANAA, K.JEEVITHA, V.NAVINA, G.INDIRA, S.JAYAMANI
International Journal of Innovative Research in Science, Engineering and Technology , 2013,
Abstract: The Primary Aim Of The Project Is To Design, Develop And Implement Automatic Wall Painting Robot Which Helps To Achieve Low Cost Painting Equipment. Despite The Advances In Robotics And Its Wide Spreading Applications, Interior Wall Painting Has Shared Little In Research Activities. The Painting Chemicals Can Cause Hazards To The Human Painters Such As Eye And Respiratory System Problems. Also The Nature Of Painting Procedure That Requires Repeated Work And Hand Rising Makes It Boring, Time And Effort Consuming. When Construction Workers And Robots Are Properly Integrated In Building Tasks, The Whole Construction Process Can Be Better Managed And Savings In Human Labour And Timing Are Obtained As A Consequence. In Addition, It Would Offer The Opportunity To Reduce Or Eliminate Human Exposure To Difficult And Hazardous Environments, Which Would Solve Most Of The Problems Connected With Safety When Many Activities Occur At The Same Time. These Factors Motivate The Development Of An Automated Robotic Painting System.
Study of Duct Characteristics Deduced from Low Latitude Ground Observations of Day-Time Whistler at Jammu  [PDF]
M. Altaf, M. M. Ahmad
International Journal of Astronomy and Astrophysics (IJAA) , 2013, DOI: 10.4236/ijaa.2013.33032
Abstract:

Propagation characteristics of low latitude whistler duct characteristics have been investigated based on day-time measurements at Jammu. The morphogical characteristics of low latitude whistlers are discussed and compared with characteristics of middle and high latitude whistlers. The Max. electron density (Nm) at the height of the ionosphere obtained from whistler dispersion comes out to be higher than that of the background which is in accordance with the characteristics of whistler duct. The equivalent width is found to be close to the satellite observations and the characteristics of whistler duct in low latitude ionosphere are similar to those in middle and high latitude ionosphere. The width of ducts estimated from the diffuseness of the whistler track observed during magnetic storm is found to lie in the range of 50 - 200 Km.

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