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368 results on '"Gaddam S"'

2. The precede consortium: A longitudinal international cohort study of individuals with a high-risk of pancreatic cancer

Author

García García de Paredes, A., primary, Katona, B., additional, Zogopoulos, G., additional, Brand, R., additional, Kaul, V., additional, Earl, J., additional, Tempero, M., additional, Kupfer, S., additional, Paiella, S., additional, Farrell, J., additional, Sears, R., additional, Sheppard, B., additional, Grossberg, A., additional, Idos, G., additional, Chung, D., additional, Golan, T., additional, Friedman, E., additional, Laish, I., additional, Kwon, R., additional, Stoffel, E., additional, Merchant, N., additional, Sussman, D., additional, Brentnall, T., additional, Gaddam, S., additional, Jeter, J., additional, Klute, K., additional, Lowy, A., additional, Liau, J., additional, Lindberg, J., additional, Permuth, J., additional, Kastrinos, F., additional, Bi, Y., additional, Carpizo, D., additional, Lin, J., additional, Schrader, I., additional, Lucas, A., additional, Wadlow, R., additional, Greenhalf, W., additional, Shan, Y., additional, and Simeone, D., additional

Published
2023
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7. Discovery of serum biomarkers for diagnosis of tuberculosis by NMR metabolomics including cross-validation with a second cohort

Author

Conde, R., primary, Laires, R., additional, Gonçalves, L.G., additional, Rizvi, A., additional, Barroso, C., additional, Villar, M., additional, Macedo, R., additional, Simões, M.J., additional, Gaddam, S., additional, Lamosa, P., additional, Puchades-Carrasco, L., additional, Pineda-Lucena, A., additional, Patel, A.B., additional, Mande, S.C., additional, Banerjee, S., additional, Matzapetakis, M., additional, and Coelho, A.V., additional

Published
2022
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23. Active and prospective latent tuberculosis are associated with different metabolomic profiles: clinical potential for the identification of rapid and non-invasive biomarkers

Author

Albors-Vaquer, A., primary, Rizvi, A., additional, Matzapetakis, M., additional, Lamosa, P., additional, Coelho, A. V., additional, Patel, A. B., additional, Mande, S. C., additional, Gaddam, S., additional, Pineda-Lucena, A., additional, Banerjee, S., additional, and Puchades-Carrasco, L., additional

Published
2020
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25. A service oriented IoT architecture for disaster preparedness and forecasting system

Author

Anju S. Pillai, Gaddam S. Chandraprasad, Ahmed Shaharyar Khwaja, and Alagan Anpalagan

Subjects
business.industry, Computer science, Real-time computing, 020206 networking & telecommunications, Cloud computing, Fault tolerance, 02 engineering and technology, Computer Science Applications, Set (abstract data type), Artificial Intelligence, Hardware and Architecture, Approximation error, Management of Technology and Innovation, 0202 electrical engineering, electronic engineering, information engineering, Computer Science (miscellaneous), Early warning system, 020201 artificial intelligence & image processing, business, Engineering (miscellaneous), Wireless sensor network, Software, Information Systems
Abstract

The development of disaster preparedness and forecasting system integrating real-time sensor data and time stringent computing is becoming increasingly important for mitigating the negative effects of disasters. In this paper, a service oriented IoT architecture for an early warning system (EWS) through implementation of machine learning (ML) algorithm in a cloud server is presented. Unlike other EWS approaches, our implementation includes layer level IoT architecture with a triple modular redundancy fault tolerant scheme for sensor network to guarantee availability of reliable and fault free sensor data to the cloud for accurate predictions. A ML algorithm is implemented for three sensor parameters viz., MQ4, MQ7 and force sensing resistor on the AWS cloud. The absolute error percentage between the actual and the predicted values are found to be 6.18%, 3.03% and 3.65%, respectively, for a set of values at 20 different time intervals.

Published
2021

30. Preparation and characterization of mixed-ligand dihydrazone complexes of nickel(II)

Author

Geetha Marpadga, Gaddam S. Rajender Reddy, and Madhukar C. Ganorkar

Subjects
Ligand, Metals and Alloys, Conductance, chemistry.chemical_element, Dehydroacetic acid, Catalysis, Inorganic Chemistry, chemistry.chemical_compound, Ammonia, Nickel, chemistry, Polymer chemistry, Pyridine, Materials Chemistry, Organic chemistry, Organometallic chemistry
Abstract

New complexes of NiII-containing dihydrazones derived from dehydroacetic acid as primary ligands and ammonia or pyridine as secondary ligand were prepared and characterized by elemental analysis, conductance, spectral and magnetic data. The dihydrazones react with NiCl2 in their enolic forms as bis-tridentate complexing agents, forming dinuclear dihydrazido-diamine-dinickel complexes with ammino co-ligands. The ammino complexes were treated with pyridine to give the pyridino complexes. Squareplanar geometries are proposed for all the complexes and preliminary studies show that they possess antifungal activity.

Published
1996

36. Observer agreement in the assessment of narrowband imaging system surface patterns in Barrett's esophagus: a multicenter study

Author

Singh, M., Bansal, A., Curvers, W.L., Kara, M.A., Wani, S.B., Alvarez Herrero, L., Lynch, C.R., Kouwen, M.C.A. van, Peters, F.T., Keighley, J.D., Rastogi, A., Pondugula, K., Kim, R., Singh, V., Gaddam, S., Bergman, J.J., Sharma, P., Singh, M., Bansal, A., Curvers, W.L., Kara, M.A., Wani, S.B., Alvarez Herrero, L., Lynch, C.R., Kouwen, M.C.A. van, Peters, F.T., Keighley, J.D., Rastogi, A., Pondugula, K., Kim, R., Singh, V., Gaddam, S., Bergman, J.J., and Sharma, P.

Abstract

Item does not contain fulltext, Background and study aims: The clinical utility of narrow-band imaging (NBI) for Barrett's esophagus is limited by the multiplicity of classification schemes. We evaluated the interobserver agreement and accuracy of a new consensus-driven simplified binary classification of NBI surface patterns.

Published
2011

37. Evaluation of the updated confocal laser endomicroscopy criteria for Barrett's esophagus among gastrointestinal pathologists

Author

Tofteland, N., primary, Singh, M., additional, Gaddam, S., additional, Wani, S. B, additional, Gupta, N., additional, Rastogi, A., additional, Bansal, A., additional, Kanakadandi, V., additional, McGregor, D. H., additional, Ulusarac, O., additional, Cherian, R., additional, Mathur, S. C, additional, and Sharma, P., additional

Published
2013
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40. Changes in symptom reflux association using dynamic pH thresholds during ambulatory pH monitoring: an observational cross-sectional study.

Author

Gaddam, S., Sathyamurthy, A., Kushnir, V., Drapekin, J., Sayuk, G., and Gyawali, C. P.

Subjects
*GASTROESOPHAGEAL reflux, *SYMPTOMS, *PROBABILITY theory, *RECEIVER operating characteristic curves, *SCIENTIFIC observation, *LOGISTIC regression analysis
Abstract

Symptom reflux association ( SRA) assesses symptoms associated with reflux events defined by pH <4.0, but limited symptoms associate with reflux events. We evaluated the impact of alternate pH thresholds on SRA in a large ambulatory pH database. Acid exposure time ( AET), reflux events, and associated symptoms (within 2 minutes following a reflux event) were extracted from ambulatory pH studies performed off antireflux therapy (722 patients, 49.1 ± 0.5 years, 66.8% F) over a 7-year period. Symptom association probability ( SAP) and symptom index ( SI) were calculated at pH 3.5, 4.0, 4.5, and 5. Receiver operating characteristics ( ROC) were generated using SRA at any pH as gold standard; areas under the curve ( AUCs) were determined. Discordant cases were reanalyzed to determine changes in SRA and predictors of change using multivariate regression. At pH 4.0, 41% had a positive SAP, and 34% had a positive SI. While there was sustained gain in SI positivity from acidic to more weakly acidic pH thresholds, SAP positivity was highest at pH 4.5. On ROC analysis, performance characteristics were best at pH 4.0 ( AUC 0.97) for SAP, and at pH 4.5 and 5.0 ( AUC 0.92-0.94) for SI. On multivariate logistic regression adjusting for age, gender, and change in AET and reflux events, only number of associated symptoms predicted change in SRA ( P < 0.0001). Changing pH thresholds for reflux events augments SRA by increasing reflux events associated with existing symptoms, while symptom recording remains the principal determinant of SRA. [ABSTRACT FROM AUTHOR]

Published
2016
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43. Observer agreement in the assessment of narrowband imaging system surface patterns in Barrett’s esophagus: a multicenter study

Author

Singh, M., additional, Bansal, A., additional, Curvers, W., additional, Kara, M., additional, Wani, S., additional, Alvarez Herrero, L., additional, Lynch, C., additional, van Kouwen, M., additional, Peters, F., additional, Keighley, J., additional, Rastogi, A., additional, Pondugula, K., additional, Kim, R., additional, Singh, V., additional, Gaddam, S., additional, Bergman, J., additional, and Sharma, P., additional

Published
2011
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