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Search Results: 1 - 10 of 195127 matches for " Nageswar Rao G "
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A simple slide test to assess erythrocyte aggregation in acute ST-elevated myocardial infarction and acute ischemic stroke: Its prognostic significance
Lakshmi Atla,Uma Prasad,Venkatachalam Ch,Nageswar Rao G
Indian Journal of Pathology and Microbiology , 2011,
Abstract: A simple slide test and image analysis were used to reveal the presence of an acute-phase response and to determine its intensity in subjects of acute myocardial infarction and acute ischemic stroke. Erythrocytes tend to aggregate during an inflammatory process. Evaluation of erythrocyte adhesiveness/aggregation is currently available to the clinicians indirectly by erythrocyte sedimentation rate (ESR), but ESR correlates poorly with erythrocyte aggregation, hence a simple slide technique using citrated blood was used to evaluate erythrocyte aggregation microscopically and also by using image analysis. Aims: (1) To study erythrocyte aggregation/adhesiveness by a simple slide test in subjects with acute ST-elevated myocardial infarction (STEMI), acute ischemic stroke and healthy controls. (2) To study the prognostic significance of ESR and erythrocyte aggregation/adhesiveness test (EAAT) in predicting the outcome after 1 week in subjects of acute myocardial infarction and acute ischemic stroke. Patients and Methods: Three groups of subjects were included in the study; 30 patients of acute STEMI, 30 patients of acute ischemic stroke, and 30 subjects with age- and gender-matched healthy controls. Citrated blood was subjected to simple slide test and ESR estimation by Westergren′s method. Stained smears were examined under 400Χ and graded into four grades. Images were taken from nine fields; three each from head, body, and tail of the smear. The degree of erythrocyte aggregation was quantified using a variable called erythrocyte percentage (EP), by using the software MATLAB Version 7.5. A simple program was used to count the number of black and white pixels in the image by selecting a threshold level. Results: The mean ESR of the subjects with acute myocardial infarction (29 + 17.34) was significantly higher (P = 0.001) than the mean ESR of the control group (15.5 + 12.37). The mean EP of the subjects with acute myocardial infarction (69.91 + 13.25) was significantly lower (P < 0.001) than the mean EP of the control group (85.16 + 8.41). The mean ESR of the subjects with acute stroke (40.46 + 33.75) was significantly higher (P = 0.0005) than that of the controls (15.5 + 12.37). The mean EP of the stroke patients (70.59 + 11.30) was significantly lower (P < 0.001) than the mean EP of the controls (85.16 + 8.41). In subjects with acute myocardial infarction there was a significant negative correlation (r = 0.623) between ESR and EP. In acute stroke patients there was a significant negative correlation (r = 0.69) between ESR and EP. On performing standard er
Visual outcome of pars plana vitrectomy with intraocular foreign body removal through sclerocorneal tunnel and sulcus-fixated intraocular lens implantation as a single procedure, in cases of metallic intraocular foreign body with traumatic cataract
Mahapatra Santosh,Rao Nageswar
Indian Journal of Ophthalmology , 2010,
Abstract: Aim: To evaluate visual outcome following pars plana vitrectomy (PPV) and intraocular foreign body (IOFB) removal through the sclerocorneal tunnel combined with simultaneous cataract extraction and sulcus-fixated intraocular lens (IOL) implantation as a single procedure in penetrating ocular trauma with IOFB and traumatic cataract. Materials and Methods: Eighteen cases of penetrating ocular trauma with retained IOFB and traumatic cataract who underwent PPV, IOFB body removal and cataract extraction with posterior chamber IOL (PCIOL) implantation in the same sitting, between June ′04 and December ′05 were retrospectively analyzed. All the foreign bodies were removed through the sclerocorneal tunnel. Result: All the 18 patients were young males, with an average follow-up period of 12 months. In 12 cases the foreign body was intravitreal and in six cases it was intraretinal but extramacular. Thirteen cases had a best corrected visual acuity ranging from 20/20 to 20/60 at their last follow-up. Five cases developed retinal detachment due to proliferative vitreoretinopathy (PVR) changes postoperatively and were subsequently managed by surgery. Conclusion: Primary IOL implantation with combined cataract and vitreo-retinal surgery is a safe option reducing the need for two separate surgeries in selected patients with retained IOFB and traumatic cataract. This combined procedure provides good visual outcome with early rehabilitation in young working patients.
CAG and GGN Repeat Length Polymorphisms of Androgen Receptor Gene in Women with Breast Cancer: A Case-Control Study from South India  [PDF]
Durgadatta Tosh, Bineet Panda, Tipirisetti Nageswar Rao, Arvind Babu, Vishnupriya Satti, Digumarti Raghnadharao, Lalji Singh, Lakshmi Rao
Journal of Cancer Therapy (JCT) , 2012, DOI: 10.4236/jct.2012.325093
Abstract: Aim: The Androgen Receptor (AR) is a ligand-dependent transcriptional activator and the AR gene contains a highly polymorphic trinucleotide repeat CAG and GGN in the first exon. Given the lack of information AR-CAG and GGN repeat polymorphism and its potential correlation with breast cancer in South Indian women, we conducted a case-control study to observe the effects of CAG & GGN repeat length polymorphism and risk of breast cancer. Methods: Polymorphisms for AR-CAG and GGN repeat length was detected by Gene Scan analysis in the genomic DNA from cases with breast cancer and controls. Results: Association between AR genotype was calculated by categorising alleles as short (S) and long (L) and taking median value as the cut-off. LL genotype of CAG repeat was found to be associated with breast cancer (OR, 4.58; 95% CI, 10.61-1.98; p—0.0004). GGN repeat having ≥21 was found in most of the cases and none of the cases showed 20 repeats thus indicate that alleles having homozygous repeat 20 may be protective towards breast cancer. Also, SS genotype was observed in 56.84% of cases and in 73.03% of controls (OR, 0.48; 95% CI, 0.26-0.89; p value, 0.02). Conclusion: Our results indicate that longer CAG and GGN repeat may be associated with breast cancer whereas, the shorter GGN repeat length genotype of AR are protective.
Intravitreal live adult Brugian filariasis
Rao Nageswar,Mahapatra Sontosh,Pattnayak Sabyasachi,Pattnaik Kaumudee
Indian Journal of Ophthalmology , 2008,
Abstract: Human ocular infestation by live filarial worm is a rare occurrence and has been reported mostly form South-East Asia. It involves the eyelids, conjunctiva, cornea, anterior chamber and uvea. No case of intravitreal Brugian microfilaria / adult worm has been found by Medline search. Here we report a case of live intravitreal adult Brugian filaria, where the parasite was successfully removed by pars plana vitrectomy. Identification of the worm was done by light microscopy and confirmed by immuno chromatographic test.
Ibrahim Patel,Raghavendra Kulkarni,Dr.P. Nageswar Rao
International Journal of Computers & Technology , 2013,
Abstract: It has been read and also seen by physical encounters that there found to be seven near resembling humans by appearance .Many a times one becomes confused with respect to identification of such near resembling faces when one encounters them. The recognition of familiar faces plays a fundamental role in our social interactions. Humans are able to identify reliably a large number of faces and psychologists are interested in understanding the perceptual and cognitive mechanisms at the base of the face recognition process. As it is needed that an automated face recognition system should be faces specific, it should effectively use features that discriminate a face from others by preferably amplifying distinctive characteristics of face. Face recognition has drawn wide attention from researchers in areas of machine learning, computer vision, pattern recognition, neural networks, access control, information security, law enforcement and surveillance, smart cards etc. The paper shows that the most resembling faces can be recognized by having a unique value per face under different variations. Certain image transformations, such as intensity negation, strange viewpoint changes, and changes in lighting direction can severely disrupt human face recognition. It has been said again and again by research scholars that SVD algorithm is not good enough to classify faces under large variations but this paper proves that the SVD algorithm is most robust algorithm and can be proved effective in identifying faces under large variations as applicable to unique faces. This paper works on these aspects and tries to recognize the unique faces by applying optimized SVD algorithm.
Prof. Dr. B. V. Satyanarayana (30-1-1927 - 15-8-2005)
Rao G
Indian Journal of Dermatology, Venereology and Leprology , 2005,
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.
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