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Search Results: 1 - 10 of 258 matches for " Sujatha Pitla "
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Status of B-Vitamins and Homocysteine in Diabetic Retinopathy: Association with Vitamin-B12 Deficiency and Hyperhomocysteinemia
Alleboena Satyanarayana, Nagalla Balakrishna, Sujatha Pitla, Paduru Yadagiri Reddy, Sivaprasad Mudili, Pratti Lopamudra, Palla Suryanarayana, Kalluru Viswanath, Radha Ayyagari, Geereddy Bhanuprakash Reddy
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0026747
Abstract: Diabetic retinopathy (DR) is a common cause of blindness. Although many studies have indicated an association between homocysteine and DR, the results so far have been equivocal. Amongst the many determinants of homocysteine, B-vitamin status was shown to be a major confounding factor, yet very little is known about its relationship to DR. In the present study, we, therefore, investigated the status of B-vitamins and homocysteine in DR. A cross-sectional case–control study was conducted with 100 normal control (CN) subjects and 300 subjects with type-2 diabetes (T2D). Of the 300 subjects with T2D, 200 had retinopathy (DR) and 100 did not (DNR). After a complete ophthalmic examination including fundus fluorescein angiography, the clinical profile and the blood levels of all B-vitamins and homocysteine were analyzed. While mean plasma homocysteine levels were found to be higher in T2D patients compared with CN subjects, homocysteine levels were particularly high in the DR group. There were no group differences in the blood levels of vitamins B1 and B2. Although the plasma vitamin-B6 and folic acid levels were significantly lower in the DNR and DR groups compared with the CN group, there were no significant differences between the diabetes groups. Interestingly, plasma vitamin-B12 levels were found to be significantly lower in the diabetes groups compared with the CN group; further, the levels were significantly lower in the DR group compared with the DNR group. Higher homocysteine levels were significantly associated with lower vitamin-B12 and folic acid but not with other B-vitamins. Additionally, hyperhomocysteinemia and vitamin-B12 deficiency did not seem to be related to subjects' age, body mass index, or duration of diabetes. These results thus suggest a possible association between vitamin-B12 deficiency and hyperhomocysteinemia in DR. Further, the data indicate that vitamin-B12 deficiency could be an independent risk factor for DR.
Implementation of Adaptive Neuro Fuzzy Inference System in Speed Control of Induction Motor Drives  [PDF]
K. Naga Sujatha, K. Vaisakh
Journal of Intelligent Learning Systems and Applications (JILSA) , 2010, DOI: 10.4236/jilsa.2010.22014
Abstract: A new speed control approach based on the Adaptive Neuro-Fuzzy Inference System (ANFIS) to a closed-loop, variable speed induction motor (IM) drive is proposed in this paper. ANFIS provides a nonlinear modeling of motor drive system and the motor speed can accurately track the reference signal. ANFIS has the advantages of employing expert knowledge from the fuzzy inference system and the learning capability of neural networks. The various functional blocks of the system which govern the system behavior for small variations about the operating point are derived, and the transient responses are presented. The proposed (ANFIS) controller is compared with PI controller by computer simulation through the MATLAB/SIMULINK software. The obtained results demonstrate the effectiveness of the proposed control scheme.
Everyday Wars of Position: Social Movements and the Caracas Barrios in a Chávez Era
Fernandes,Sujatha;
Colombia Internacional , 2011,
Abstract: this article identifies the ways that urban social movements in caracas have sought to engage the hybrid state during the presidency of radical leftist leader hugo chávez. chávez's election has created avenues for previously disenfranchised groups to participate in gover-nance and decision-making. the structures and discourses of exclusion are being contested in multiple arenas since chávez has come to power. but, what lines of conflict are emerging as barrio-based movements demand inclusion in the state? in this article, i argue that as urban movements engage with the political arena, they come up against the instrumental rationalities-both liberal and neoliberal-of state administrators. barrio-based social movements counter the utilitarian logics of technocrats with alternative visions based in "lo cotidiano" (the everyday), local culture and historical memory. we need to combine foucault's insights about the operation of power through governmentality with gramsci's insistence on practical politics, in order to account more fully for the contested nature of power. in this article, i suggest the reframing of a gramscian notion of hegemony in a positive sense as "everyday wars of position," to think about the quotidian and subterranean spaces where technocrats are confronted with alternative visions from below. i use the example of com-munity media in caracas to illustrate the ways that social movements engage with the state.
Phthiriasis palpebrarum
Sujatha Vijayalekshmi
Our Dermatology Online , 2012,
Abstract: Phthiriasis palpebrarum of the eyelashes is not an uncommon condition when hygienic condition are inadequate. The lice occupy, chiefly, the roots of the eyelashes, to which they cling tenaciously, while the shafts of the cilia are covered with their brown nits. The patients with the symptom of pruritus of the eyelids and with clinical findings resembling exfoliation on the surface of lid skin and seborrhea accumulation on eyelashes must carefully be examined by slit lamp in order to avoid misdiagnosis. In the cases diagnosed as having lid eczema and seborrheic blepharitis, lice and nits might easily be overlooked and treatment might remain ineffective. Various treatment options are available from medical; mechanical removal of nits and lice, cryotherapy. In this short review we are describing in details about the organism, clinical features, mode of transmission, treatment about Phthiriasis palpebrarum.
Improving the QOS in Video Streaming Multicast
Sujatha M.
Indian Journal of Computer Science and Engineering , 2011,
Abstract: In a streaming video multicast environment a large number of users often request various similar processing on the same stream. Therefore service sharing is feasible, with a large potential of savings in processing cost.The Service invocation order may play a significant role on service sharing in a streaming video multicast application. The problem is how to determine Service Invocation Order for multiple service composition requests with the aim of maximizing service sharing. This paper proposes BFS algorithm to maximize the service sharing in a streaming video multicast environment in order to reduce the processing cost and to increase the scalability. The service invocation orders for multiple service composition requests will be determined with the aim of maximizing the service sharing. The BFS algorithm merges the services level by level without changing the service invocation order.
A Letter
Sujatha S
Indian Journal of Ophthalmology , 2003,
Abstract:
PERFORMANCE EVALUATION OF CROSS AND MULTILINGUAL INFORMATION RETRIEVAL USING RECALL METRIC VARIANTS
Pothula Sujatha
International Journal of Computer and Distributed System , 2012,
Abstract: The performance evaluation of information retrieval systems has achieved a high momentum in the last few years. Basic performance measures of information retrieval systems include precision and recall. While these measures work well in monolingual web retrieval, they are not suitable for CLIR (Cross-lingual Information Retrieval) and MLIR (Multilingual Information Retrieval) where two or more languages are involved respectively. Many measures were proposed to improve over the precision and recall measures but they are inadequate to exhibit the language wise performance evaluations. Recall metric variants for evaluating the performance over the retrieval of the documents in various languages have been proposed in this research. This paper also identifies the major strengths and shortcomings of some of the existing IR performance evaluation measures. This paper concentrates on the metric based performance evaluation on two variants of IR. Experiments are conducted in two phases (CLIR and MLIR). These two phases of experiments have been done on practical web search systems and proved that the proposed measures are necessary to reveal the importance of language wise comparisons.
Essential Oil and its Insecticidal Activity of Medicinal Aromatic Plant Vetiveria zizanioides (L.) Against the Red Flour Beetle Tribolium castaneum (Herbst)
S. Sujatha
Asian Journal of Agricultural Sciences , 2010,
Abstract: Essential oil of Vetiver has versatile uses particularly as an inexpensive yet effective and eco-friendly tool to compact the essential role of biopesticides as well as insecticidal potentials. Insecticidal activity of the root extract of Vetiveria zizanioides (L.) in Petroleum ether, Ethyl acetate, Acetone and methanol against XSM, SMC, SRS and JTC strains of the red flour beetle, Tribolium castaneum (Herbst) was studied. The spongy root mass were dried, powdered and extracted by Steam distillation apparatus with the solvents below 60oC. Experimental extracts were applied on larvae and adult beetles in film residue methods and mortality was recorded after 24 h. In larval bioassay the highest toxicity was recorded for petroleum ether extract (LD50 = 0.051 :g/cm2) in XSM strain and the low est toxicity has been observed in Methanol extract (LD50 =11.351:g/cm2) in SMC strain. In adults petroleum ether extract accessible highest toxicity (LD50 = 58.69 :g/cm2) in JTC 12 strain and the lowest toxicity (LD50 = 204.710 :g/cm2) also been observed for acetone extract in SRS strain. LD50, 95% confidence limits and regression equations are presented.
Performance Evaluation of CLIR and MLIR using Precision Metric Variants
Pothula Sujatha
International Journal of Computer Technology and Applications , 2012,
Abstract: The performance evaluation of information retrieval systems has achieved a high momentum in the last few years. Basic performance measures of information retrieval systems include precision and recall. While these measures work well in monolingual web retrieval, they are not suitable for CLIR (Cross-lingual Information Retrieval) and MLIR (Multilingual Information Retrieval) where two or more languages are involved respectively. Many measures were proposed to improve over the precision-recall measures but they are inadequate to exhibit the language wise performance evaluations. Precision metric variants for evaluating the performance over the retrieval of the documents in various languages have been proposed in this research. This paper also identifies the major strengths and shortcomings of some of the existing IR performance evaluation measures. This paper concentrates on the metric based performance evaluation on two variants of IR. Experiments are conducted in two phases (CLIR and MLIR). These two phases of experiments have been done on practical web search systems and proved that the proposed measures are necessary to reveal the importance of language wise comparisons.
CORNELIA DE LANGE SYNDROME
Sujatha S
e-Journal of Dentistry , 2012,
Abstract:
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