804 results on '"Ratheesh, A."'
Search Results
2. Treatment-resistant granulomatosis with polyangiitis: An unusual presentation
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Jasmin Rahesh, Tavien Mapp, Anant Gonugunta, Iqra Kazi, Sarah Day, Mousab Diab, Rani Ratheesh, and Tarek Naguib
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General Medicine - Abstract
Granulomatosis with polyangiitis (GPA) is a rare systemic small-vessel vasculitis. This inflammatory reaction can affect the upper and lower respiratory tract, as well as the kidneys. The expected age of presentation is in the sixth and seventh decades of life, and Caucasians are mostly affected. The cornerstone of treatment is high-dose glucocorticoids in combination with immunosuppressant, steroid-sparing drugs, which leads to remission in almost 80% of patients. We present an unusual case of a 55-year-old Hispanic woman presenting with acute kidney injury secondary to treatment-resistant GPA. The failure of standard treatment is extremely rare. In addition, this patient presented with primarily renal symptoms, even though head and neck and airway symptoms are expected in almost all cases initially.Keywords: Granulomatosis with polyangiitis, renal failure, treatment failure
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- 2023
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3. GIS Mapping of Marine Litter Along Recreational Beaches of Mumbai Coast, Maharashtra
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Aswathy Ashokan, Nakhawa Ajay Dayaram, R. Ratheesh Kumar, and Vidya Shree Bharti
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Geography, Planning and Development ,Earth and Planetary Sciences (miscellaneous) - Published
- 2023
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4. Riedel’s Thyroiditis: Pitfalls in Diagnosis and Subsequent Complications
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R. Pandev, M. Khan, and V. Ratheesh
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Endocrinology, Diabetes and Metabolism - Abstract
Riedel’s thyroiditis is a rare disease of chronic inflammation with fibrotic infiltration of the thyroid gland and its surrounding vital structures. Due to its low incidence, there are often delays in diagnosis as it is commonly mistaken for other thyroid diseases. We report the case of a 34-year-old female patient who presented with a firm, enlarged mass in the neck, compression symptoms, and hypothyroidism. Lab tests showed elevated A-TG (thyroglobulin antibodies) and A-TPO (thyroid peroxidase antibodies) levels. Based on the disease presentation and supporting lab findings, the patient was misdiagnosed with Hashimoto’s thyroiditis and treated accordingly. Yet the patient’s symptoms grew progressively worse. She was discovered to have severe tracheal compression and bilateral RLN (recurrent laryngeal nerve) palsy. Tracheotomy became a necessary surgical intervention after the development of respiratory failure, but this procedure was complicated by the development of an intraoperative pneumothorax. After an open biopsy, histology revealed Riedel’s thyroiditis. A new treatment was introduced, with which the patient’s condition improved. However, she continued to suffer from the open tracheocutaneous fistula left by the tracheostomy, which adversely affected her everyday life. A follow-up operation was performed to close the fistula. In this case report, we discuss the consequences of misdiagnosing the patient and delaying the appropriate treatment for her disease.
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- 2023
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5. A Study on Reliable IoT Adoption to Handle Future Pandemics
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Sangeetha U., Krishnalekha P.L., S.A. Binoosh, Ratheesh T.K., Sreelekshmi S., and K.R. Remesh Babu
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General Medicine - Published
- 2023
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6. Seasonal variations in textural characteristics and depositional environment of foreshore sediments along Kerala Coast, India
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S. Vasudevan, R. Sajeev, and Ratheesh Ramakrishnan
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Ocean Engineering ,Geotechnical Engineering and Engineering Geology ,Oceanography - Published
- 2023
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7. Characterization of suspended microplastics in surface waters of Chalakudy River, Kerala, India
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S. K. Maneesh Kumar, Aswathy R. Kartha, S. Rajathy, C. S. Ratheesh Kumar, P. K. Chandini, P. V. Vidya, P. K. Madhuraj, K. S. Sajith, and S. Anamika
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Ecology ,General Earth and Planetary Sciences ,Ecology, Evolution, Behavior and Systematics ,General Environmental Science - Published
- 2023
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8. Locally Excited States Guided Enhancement in Reverse Intersystem Crossing Rate in Unconventional Acceptor-free Thermally Activated Delayed Emitters
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Madalasa Mondal and Ratheesh K. Vijayaraghavan
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General Energy ,Physical and Theoretical Chemistry ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials - Published
- 2023
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9. Effective Methodology for Selective Recovery of Lithium Values from Discarded Li-Ion Batteries
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Amit Barnwal, Mudavath Balakrishna, Priyadarshini Bais, Rajesh Kumar Sivasankaran Nair, Ratheesh Ravendran, and Ajay Kaushal
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General Engineering ,General Materials Science - Published
- 2023
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10. Discovery of OICR12694: A Novel, Potent, Selective, and Orally Bioavailable BCL6 BTB Inhibitor
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Ahmed Mamai, Anh M. Chau, Brian J. Wilson, Iain D. Watson, Babu B. Joseph, Pandiaraju R. Subramanian, Monzur M. Morshed, Justin A. Morin, Michael A. Prakesch, Tianbao Lu, Pete Connolly, Douglas A. Kuntz, Neil C. Pomroy, Gennady Poda, Kong Nguyen, Richard Marcellus, Graig Strathdee, Brigitte Theriault, Ratheesh Subramaniam, Mohammed Mohammed, Ayome Abibi, Manuel Chan, Jeffrey Winston, Taira Kiyota, Elijus Undzys, Ahmed Aman, Nigel Austin, Marc Du Jardin, Kathryn Packman, Ulrike Phillippar, Riccardo Attar, James Edwards, Jeff O’Meara, David E. Uehling, Rima Al-awar, Gilbert G. Privé, and Methvin B. Isaac
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Organic Chemistry ,Drug Discovery ,Biochemistry - Published
- 2023
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11. Temperature-Regulated Dual Phosphorescence and Mechanical Strain-Induced Luminescence Modulation in a Plastically Bendable and Twistable Organic Crystal
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Kalyan Jyoti Kalita, Saikat Mondal, C. Malla Reddy, and Ratheesh K. Vijayaraghavan
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General Chemical Engineering ,Materials Chemistry ,General Chemistry - Published
- 2023
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12. A systematic review and meta-analysis of global and social functioning among people at risk of bipolar disorder
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M, Watson, K, Filia, A, Stevens, S, Cotton, B, Nelson, and A, Ratheesh
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Psychiatry and Mental health ,Clinical Psychology ,Bipolar Disorder ,Cross-Sectional Studies ,Risk Factors ,Social Interaction ,Humans ,Female - Abstract
Functional status could predict development of bipolar disorder (BD) or have clinical significance. The relationship between BD risk and functioning is poorly understood. We undertook a systematic review examining the global and social functioning of those at risk for BD.We examined observational studies comparing a risk sample with healthy controls or full-threshold BD participants, using measures of global or social functioning. Risk status included family history of BD, meeting risk criteria, or having prodromal symptomatology, or premorbid functioning of persons with BD. Medline, PsycINFO, and Embase were searched. The Newcastle-Ottawa Scale for Cross-Sectional Studies was used to assess quality. Meta-analyses were performed where possible.7215 studies were screened and 40 studies were included (8474 participants). Risk samples had poorer functioning than controls, and superior functioning to participants with BD. Meta-analysis indicated poorer global functioning among persons with familial risk compared to healthy controls (mean global functional difference: 5.92; 95 % confidence interval: 7.90, 3.95; mean premorbid functioning difference: 2.31; 95 % confidence interval: 0.70, 3.92). Studies with higher proportions of female participants had slightly poorer global functioning. High heterogeneity was attributable functional measures and potentially functionally differential subgroups within the risk samples.Broader measures of functioning, such as neurocognition and behavioural measures, were excluded. Measures of global functioning are limited by conflating functioning and symptoms.Functioning in the BD risk populations is intermediate to that of healthy controls and persons with BD, indicating their value in definitions of BD risk, in itself a likely heterogeneous state.
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- 2023
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13. Multi-functionalization of woody biochar tuned for sustainable surface microbiological processes: a case study for energy applications
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Anjana Ratheesh, Bhuvanendran Revamma Sreelekshmy, and Sheik Muhammadhu Aboobakar Shibli
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Fuel Technology ,Renewable Energy, Sustainability and the Environment ,Energy Engineering and Power Technology - Abstract
Strategic development of a redox-active multi-functionalized and multiporous biochar-based electrode as a bioanode to enhance microbial processes in an MFC to achieve a current density as high as 2.53 × 102 mA m−2.
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- 2023
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14. Discovery of strongly variable X-ray polarization in the neutron star low-mass X-ray binary transient XTE J1701$-$462
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Cocchi, M., Gnarini, A., Fabiani, S., Ursini, F., Poutanen, J., Capitanio, F., Bobrikova, A., Farinelli, R., Paizis, A., Sidoli, L., Veledina, A., Bianchi, S., Di Marco, A., Ingram, A., Kajava, J. J. E., La Monaca, F., Matt, G., Malacaria, C., Mikusincova, R., Rankin, J., Zane, S., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Donnarumma, I., Doroshenko, V., Dovciak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Heyl, J., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marinucci, A., Marscher, A. P., Marshall, H. L., Massaro, F., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., C. -Y., Ng, O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P. -O., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgro, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Tombesi, F., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., Xie, F., Cocchi, M., Gnarini, A., Fabiani, S., Ursini, F., Poutanen, J., Capitanio, F., Bobrikova, A., Farinelli, R., Paizis, A., Sidoli, L., Veledina, A., Bianchi, S., Di Marco, A., Ingram, A., Kajava, J. J. E., La Monaca, F., Matt, G., Malacaria, C., Mikusincova, R., Rankin, J., Zane, S., Agudo, I., Antonelli, L. A., Bachetti, M., Baldini, L., Baumgartner, W. H., Bellazzini, R., Bongiorno, S. D., Bonino, R., Brez, A., Bucciantini, N., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., Costa, E., De Rosa, A., Del Monte, E., Di Gesu, L., Di Lalla, N., Donnarumma, I., Doroshenko, V., Dovciak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Ferrazzoli, R., Garcia, J. A., Gunji, S., Hayashida, K., Heyl, J., Iwakiri, W., Jorstad, S. G., Kaaret, P., Karas, V., Kislat, F., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marin, F., Marinucci, A., Marscher, A. P., Marshall, H. L., Massaro, F., Mitsuishi, I., Mizuno, T., Muleri, F., Negro, M., Ng, C. -Y., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Pesce-Rollins, M., Petrucci, P. -O., Pilia, M., Possenti, A., Puccetti, S., Ramsey, B. D., Ratheesh, A., Roberts, O. J., Romani, R. W., Sgro, C., Slane, P., Soffitta, P., Spandre, G., Swartz, D. A., Tamagawa, T., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Tombesi, F., Trois, A., Tsygankov, S. S., Turolla, R., Vink, J., Weisskopf, M. C., Wu, K., and Xie, F.
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High Energy Astrophysical Phenomena (astro-ph.HE) ,Astrophysics - Solar and Stellar Astrophysics ,FOS: Physical sciences ,Astrophysics - High Energy Astrophysical Phenomena ,Solar and Stellar Astrophysics (astro-ph.SR) - Abstract
After about 16 years since its first outburst, the transient neutron star low-mass X-ray binary XTE J1701$-$462 turned on again in September 2022, allowing for the first study of its X-ray polarimetric characteristics by a dedicated observing program with the Imaging X-ray Polarimeter Explorer (IXPE). Polarimetric studies of XTE J1701$-$462 have been expected to improve our understanding of accreting weakly magnetized neutron stars, in particular, the physics and the geometry of the hot inner regions close to the compact object. The IXPE data of two triggered observations were analyzed using time-resolved spectroscopic and polarimetric techniques, following the source along its Z-track of the color-color diagram. During the first pointing on 2022 September 29, an average 2-8 keV polarization degree of 4.6$\pm$ 0.4\% was measured, the highest value found up to now for this class of sources. Conversely, only a $\sim$0.6\% average degree was obtained during the second pointing ten days later. The polarimetric signal appears to be strictly related to the higher energy blackbody component associated with the boundary layer (BL) emission and its reflection from the inner accretion disk, and it is as strong as 6.1\% and 1.2\% ($>95\%$ significant) above 3-4 keV for the two measurements, respectively. The variable polarimetric signal is apparently related to the spectral characteristics of XTE J1701$-$462, which is the strongest when the source was in the horizontal branch of its Z-track and the weakest in the normal branch. These IXPE results provide new important observational constraints on the physical models and geometry of the Z-sources. Here, we discuss the possible reasons for the presence of strong and variable polarization among these sources., 7 pages, 8 figures; published in A&A 674, L10 (2023)
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- 2023
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15. X-Ray Polarimetry Reveals the Magnetic-field Topology on Sub-parsec Scales in Tycho’s Supernova Remnant
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Riccardo Ferrazzoli, Patrick Slane, Dmitry Prokhorov, Ping Zhou, Jacco Vink, Niccolò Bucciantini, Enrico Costa, Niccolò Di Lalla, Alessandro Di Marco, Paolo Soffitta, Martin C. Weisskopf, Kazunori Asakura, Luca Baldini, Jeremy Heyl, Philip E. Kaaret, Frédéric Marin, Tsunefumi Mizuno, C.-Y. Ng, Melissa Pesce-Rollins, Stefano Silvestri, Carmelo Sgrò, Douglas A. Swartz, Toru Tamagawa, Yi-Jung Yang, Iván Agudo, Lucio A. Antonelli, Matteo Bachetti, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Chien-Ting Chen, Stefano Ciprini, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Immacolata Donnarumma, Victor Doroshenko, Michal Dovčiak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Javier A. Garcia, Shuichi Gunji, Kiyoshi Hayashida, Wataru Iwakiri, Svetlana G. Jorstad, Fabian Kislat, Vladimir Karas, Takao Kitaguchi, Jeffery J. Kolodziejczak, Henric Krawczynski, Fabio La Monaca, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Andrea Marinucci, Alan P. Marscher, Herman L. Marshall, Giorgio Matt, Ikuyuki Mitsuishi, Fabio Muleri, Michela Negro, Stephen L. O’Dell, Nicola Omodei, Chiara Oppedisano, Alessandro Papitto, George G. Pavlov, Abel L. Peirson, Matteo Perri, Pierre-Olivier Petrucci, Maura Pilia, Andrea Possenti, Juri Poutanen, Simonetta Puccetti, Brian D. Ramsey, John Rankin, Ajay Ratheesh, Oliver Roberts, Roger W. Romani, Gloria Spandre, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Allyn F. Tennant, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Sergey S. Tsygankov, Roberto Turolla, Kinwah Wu, Fei Xie, Silvia Zane, Ferrazzoli, R., Slane, P., Prokhorov, D., Zhou, P., Vink, J., Bucciantini, N., Costa, E., Di Lalla, N., Di Marco, A., Soffitta, P., Weisskopf, M. C., Asakura, K., Baldini, L., Heyl, J., Kaaret, P. E., Marin, F., Mizuno, T., Ng, C. -Y., Pesce-Rollins, M., Silvestri, S., Sgro, C., Swartz, D. A., Tamagawa, T., Yang, Y. -J., Agudo, I., Antonelli, L. A., Bachetti, M., Baumgartner, W. H., Bellazzini, R., Bianchi, S., Bongiorno, S. D., Bonino, R., Brez, A., Capitanio, F., Castellano, S., Cavazzuti, E., Chen, C. -T., Ciprini, S., De Rosa, A., Del Monte, E., Di Gesu, L., Donnarumma, I., Doroshenko, V., Dovciak, M., Ehlert, S. R., Enoto, T., Evangelista, Y., Fabiani, S., Garcia, J. A., Gunji, S., Hayashida, K., Iwakiri, W., Jorstad, S. G., Kislat, F., Karas, V., Kitaguchi, T., Kolodziejczak, J. J., Krawczynski, H., La Monaca, F., Latronico, L., Liodakis, I., Maldera, S., Manfreda, A., Marinucci, A., Marscher, A. P., Marshall, H. L., Matt, G., Mitsuishi, I., Muleri, F., Negro, M., O'Dell, S. L., Omodei, N., Oppedisano, C., Papitto, A., Pavlov, G. G., Peirson, A. L., Perri, M., Petrucci, P. -O., Pilia, M., Possenti, A., Poutanen, J., Puccetti, S., Ramsey, B. D., Rankin, J., Ratheesh, A., Roberts, O., Romani, R. W., Spandre, G., Tavecchio, F., Taverna, R., Tawara, Y., Tennant, A. F., Thomas, N. E., Tombesi, F., Trois, A., Tsygankov, S. S., Turolla, R., Wu, K., Xie, F., Zane, S., Ministerio de Ciencia e Innovación (España), and European Commission
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High Energy Astrophysical Phenomena (astro-ph.HE) ,Space and Planetary Science ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Full list of authors: Ferrazzoli, Riccardo; Slane, Patrick; Prokhorov, Dmitry; Zhou, Ping; Vink, Jacco; Bucciantini, Niccolo; Costa, Enrico; Di Lalla, Niccolo; Di Marco, Alessandro; Soffitta, Paolo; Weisskopf, Martin C.; Asakura, Kazunori; Baldini, Luca; Heyl, Jeremy; Kaaret, Philip E.; Marin, Frederic; Mizuno, Tsunefumi; Ng, C. -Y.; Pesce-Rollins, Melissa; Silvestri, Stefano; Sgro, Carmelo; Swartz, Douglas A.; Tamagawa, Toru; Yang, Yi-Jung; Agudo, Ivan; Antonelli, Lucio A.; Bachetti, Matteo; Baumgartner, Wayne H.; Bellazzini, Ronaldo; Bianchi, Stefano; Bongiorno, Stephen D.; Bonino, Raffaella; Brez, Alessandro; Capitanio, Fiamma; Castellano, Simone; Cavazzuti, Elisabetta; Chen, Chien-Ting; Ciprini, Stefano; De Rosa, Alessandra; Del Monte, Ettore; Di Gesu, Laura; Donnarumma, Immacolata; Doroshenko, Victor; Dovciak, Michal; Ehlert, Steven R.; Enoto, Teruaki; Evangelista, Yuri; Fabiani, Sergio; Garcia, Javier A.; Gunji, Shuichi; Hayashida, Kiyoshi; Iwakiri, Wataru; Jorstad, Svetlana G.; Kislat, Fabian; Karas, Vladimir; Kitaguchi, Takao; Kolodziejczak, Jeffery J.; Krawczynski, Henric; La Monaca, Fabio; Latronico, Luca; Liodakis, Ioannis; Maldera, Simone; Manfreda, Alberto; Marinucci, Andrea; Marscher, Alan P.; Marshall, Herman L.; Matt, Giorgio; Mitsuishi, Ikuyuki; Muleri, Fabio; Negro, Michela; O'Dell, Stephen L.; Omodei, Nicola; Oppedisano, Chiara; Papitto, Alessandro; Pavlov, George G.; Peirson, Abel L.; Perri, Matteo; Petrucci, Pierre-Olivier; Pilia, Maura; Possenti, Andrea; Poutanen, Juri; Puccetti, Simonetta; Ramsey, Brian D.; Rankin, John; Ratheesh, Ajay; Roberts, Oliver; Romani, Roger W.; Spandre, Gloria; Tavecchio, Fabrizio; Taverna, Roberto; Tawara, Yuzuru; Tennant, Allyn F.; Thomas, Nicholas E.; Tombesi, Francesco; Trois, Alessio; Tsygankov, Sergey S.; Turolla, Roberto; Wu, Kinwah; Xie, Fei; Zane, Silvia.--This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited., Supernova remnants are commonly considered to produce most of the Galactic cosmic rays via diffusive shock acceleration. However, many questions regarding the physical conditions at shock fronts, such as the magnetic-field morphology close to the particle acceleration sites, remain open. Here we report the detection of a localized polarization signal from some synchrotron X-ray emitting regions of Tycho's supernova remnant made by the Imaging X-ray Polarimetry Explorer. The derived degree of polarization of the X-ray synchrotron emission is 9% ± 2% averaged over the whole remnant, and 12% ± 2% at the rim, higher than the value of polarization of 7%–8% observed in the radio band. In the west region, the degree of polarization is 23% ± 4%. The degree of X-ray polarization in Tycho is higher than for Cassiopeia A, suggesting a more ordered magnetic field or a larger maximum turbulence scale. The measured tangential direction of polarization corresponds to the radial magnetic field, and is consistent with that observed in the radio band. These results are compatible with the expectation of turbulence produced by an anisotropic cascade of a radial magnetic field near the shock, where we derive a magnetic-field amplification factor of 3.4 ± 0.3. The fact that this value is significantly smaller than those expected from acceleration models is indicative of highly anisotropic magnetic-field turbulence, or that the emitting electrons either favor regions of lower turbulence, or accumulate close to where the orientation of the magnetic field is preferentially radially oriented due to hydrodynamical instabilities. © 2023. The Author(s). Published by the American Astronomical Society., J. Vink & D.Prokhorov are supported by funding from the European Union's Horizon 2020 research and innovation program under grant agreement No. 101004131 (SHARP). P.S. acknowledges support from NASA contract NAS8-03060. P.Z. acknowledges the support from NWO Veni Fellowship grant No. 639.041.647 and NSFC grant No. 12273010 C.-Y.N. and Y.J.Y. are supported by a GRF grant of the Hong Kong Government under HKU 17305419., With funding from the Spanish government through the "Severo Ochoa Centre of Excellence" accreditation (CEX2021-001131-S).
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- 2023
16. X-ray polarimetry of X-ray pulsar X Persei: another orthogonal rotator?
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Mushtukov, A A, Tsygankov, S S, Poutanen, J, Doroshenko, V, Salganik, A, Costa, E, Marco, A Di, Heyl, J, Monaca, F La, Lutovinov, A A, Mereminsky, I A, Papitto, A, Semena, A N, Shtykovsky, A E, Suleimanov, V F, Forsblom, S V, González-Caniulef, D, Malacaria, C, Sunyaev, R A, Agudo, I, Antonelli, L A, Bachetti, M, Baldini, L, Baumgartner, W H, Bellazzini, R, Bianchi, S, Bongiorno, S D, Bonino, R, Brez, A, Bucciantini, N, Capitanio, F, Castellano, S, Cavazzuti, E, Chen, C-T, Ciprini, S, De , Rosa, A, Del Monte, E, Gesu, L Di, Lalla, N Di, Donnarumma, I, Dovčiak, M, Ehlert, S R, Enoto, T, Evangelista, Y, Fabiani, S, Ferrazzoli, R, Garcia, J A, Gunji, S, Hayashida, K, Iwakiri, W, Jorstad, S G, Kaaret, P, Karas, V, Kislat, F, Kitaguchi, T, Kolodziejczak, J J, Krawczynski, H, Latronico, L, Liodakis, I, Maldera, S, Manfreda, A, Marin, F, Marscher, A P, Marshall, H L, Massaro, F, Matt, G, Mitsuishi, I, Mizuno, T, Muleri, F, Negro, M, Ng, C-Y, O’Dell, S L, Omodei, N, Oppedisano, C, Pavlov, G G, Peirson, A L, Perri, M, Pesce-Rollins, M, Petrucci, P-O, Pilia, M, Possenti, A, Puccetti, S, Ramsey, B D, Rankin, J, Ratheesh, A, Roberts, O J, Romani, R W, Sgrò, C, Slane, P, Soffitta, P, Spandre, G, Swartz, D A, Tamagawa, T, Tavecchio, F, Taverna, R, Tawara, Y, Tennant, A F, Thomas, N E, Tombesi, F, Trois, A, Turolla, R, Vink, J, Weisskopf, M C, Wu, K, Xie, F, Zane, S, Mushtukov, A A, Tsygankov, S S, Poutanen, J, Doroshenko, V, Salganik, A, Costa, E, Marco, A Di, Heyl, J, Monaca, F La, Lutovinov, A A, Mereminsky, I A, Papitto, A, Semena, A N, Shtykovsky, A E, Suleimanov, V F, Forsblom, S V, González-Caniulef, D, Malacaria, C, Sunyaev, R A, Agudo, I, Antonelli, L A, Bachetti, M, Baldini, L, Baumgartner, W H, Bellazzini, R, Bianchi, S, Bongiorno, S D, Bonino, R, Brez, A, Bucciantini, N, Capitanio, F, Castellano, S, Cavazzuti, E, Chen, C-T, Ciprini, S, De , Rosa, A, Del Monte, E, Gesu, L Di, Lalla, N Di, Donnarumma, I, Dovčiak, M, Ehlert, S R, Enoto, T, Evangelista, Y, Fabiani, S, Ferrazzoli, R, Garcia, J A, Gunji, S, Hayashida, K, Iwakiri, W, Jorstad, S G, Kaaret, P, Karas, V, Kislat, F, Kitaguchi, T, Kolodziejczak, J J, Krawczynski, H, Latronico, L, Liodakis, I, Maldera, S, Manfreda, A, Marin, F, Marscher, A P, Marshall, H L, Massaro, F, Matt, G, Mitsuishi, I, Mizuno, T, Muleri, F, Negro, M, Ng, C-Y, O’Dell, S L, Omodei, N, Oppedisano, C, Pavlov, G G, Peirson, A L, Perri, M, Pesce-Rollins, M, Petrucci, P-O, Pilia, M, Possenti, A, Puccetti, S, Ramsey, B D, Rankin, J, Ratheesh, A, Roberts, O J, Romani, R W, Sgrò, C, Slane, P, Soffitta, P, Spandre, G, Swartz, D A, Tamagawa, T, Tavecchio, F, Taverna, R, Tawara, Y, Tennant, A F, Thomas, N E, Tombesi, F, Trois, A, Turolla, R, Vink, J, Weisskopf, M C, Wu, K, Xie, F, and Zane, S
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- 2023
17. X-ray Polarization of BL Lacertae in Outburst
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Abel L. Peirson, Michela Negro, Ioannis Liodakis, Riccardo Middei, Dawoon E. Kim, Alan P. Marscher, Herman L. Marshall, Luigi Pacciani, Roger W. Romani, Kinwah Wu, Alessandro Di Marco, Niccoló Di Lalla, Nicola Omodei, Svetlana G. Jorstad, Iván Agudo, Pouya M. Kouch, Elina Lindfors, Francisco José Aceituno, Maria I. Bernardos, Giacomo Bonnoli, Víctor Casanova, Maya García-Comas, Beatriz Agís-González, César Husillos, Alessandro Marchini, Alfredo Sota, Carolina Casadio, Juan Escudero, Ioannis Myserlis, Albrecht Sievers, Mark Gurwell, Ramprasad Rao, Ryo Imazawa, Mahito Sasada, Yasushi Fukazawa, Koji S. Kawabata, Makoto Uemura, Tsunefumi Mizuno, Tatsuya Nakaoka, Hiroshi Akitaya, Yeon Cheong, Hyeon-Woo Jeong, Sincheol Kang, Sang-Hyun Kim, Sang-Sung Lee, Emmanouil Angelakis, Alexander Kraus, Nicoló Cibrario, Immacolata Donnarumma, Juri Poutanen, Fabrizio Tavecchio, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Niccoló Bucciantini, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Chien-Ting Chen, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Victor Doroshenko, Michal Dovčiak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A. Garcia, Shuichi Gunji, Kiyoshi Hayashida, Jeremy Heyl, Wataru Iwakiri, Philip Kaaret, Vladimir Karas, Takao Kitaguchi, Jeffery J. Kolodziejczak, Henric Krawczynski, Fabio La Monaca, Luca Latronico, Grzegorz Madejski, Simone Maldera, Alberto Manfreda, Frédéric Marin, Andrea Marinucci, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Fabio Muleri, C.-Y. Ng, Stephen L. O’Dell, Chiara Oppedisano, Alessandro Papitto, George G. Pavlov, Matteo Perri, Melissa Pesce-Rollins, Pierre-Olivier Petrucci, Maura Pilia, Andrea Possenti, Simonetta Puccetti, Brian D. Ramsey, John Rankin, Ajay Ratheesh, Oliver J. Roberts, Carmelo Sgró, Patrick Slane, Paolo Soffitta, Gloria Spandre, Douglas A. Swartz, Toru Tamagawa, Roberto Taverna, Yuzuru Tawara, Allyn F. Tennant, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Sergey Tsygankov, Roberto Turolla, Jacco Vink, Martin C. Weisskopf, Fei Xie, Silvia Zane, Peirson, Abel L., Negro, Michela, Liodakis, Ioanni, Middei, Riccardo, Kim, Dawoon E., Marscher, Alan P., Marshall, Herman L., Pacciani, Luigi, Romani, Roger W., Wu, Kinwah, Di Marco, Alessandro, Di Lalla, Niccoló, Omodei, Nicola, Jorstad, Svetlana G., Agudo, Iván, Kouch, Pouya M., Lindfors, Elina, Aceituno, Francisco José, Bernardos, Maria I., Bonnoli, Giacomo, Casanova, Víctor, García-Comas, Maya, Agís-González, Beatriz, Husillos, César, Marchini, Alessandro, Sota, Alfredo, Casadio, Carolina, Escudero, Juan, Myserlis, Ioanni, Sievers, Albrecht, Gurwell, Mark, Rao, Ramprasad, Imazawa, Ryo, Sasada, Mahito, Fukazawa, Yasushi, Kawabata, Koji S., Uemura, Makoto, Mizuno, Tsunefumi, Nakaoka, Tatsuya, Akitaya, Hiroshi, Cheong, Yeon, Jeong, Hyeon-Woo, Kang, Sincheol, Kim, Sang-Hyun, Lee, Sang-Sung, Angelakis, Emmanouil, Kraus, Alexander, Cibrario, Nicoló, Donnarumma, Immacolata, Poutanen, Juri, Tavecchio, Fabrizio, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bianchi, Stefano, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccoló, Capitanio, Fiamma, Castellano, Simone, Cavazzuti, Elisabetta, Chen, Chien-Ting, Ciprini, Stefano, Costa, Enrico, De Rosa, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Doroshenko, Victor, Dovčiak, Michal, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Fabiani, Sergio, Ferrazzoli, Riccardo, Garcia, Javier A., Gunji, Shuichi, Hayashida, Kiyoshi, Heyl, Jeremy, Iwakiri, Wataru, Kaaret, Philip, Karas, Vladimir, Kitaguchi, Takao, Kolodziejczak, Jeffery J., Krawczynski, Henric, La Monaca, Fabio, Latronico, Luca, Madejski, Grzegorz, Maldera, Simone, Manfreda, Alberto, Marin, Frédéric, Marinucci, Andrea, Massaro, Francesco, Matt, Giorgio, Mitsuishi, Ikuyuki, Muleri, Fabio, Ng, C. -Y., O’Dell, Stephen L., Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Perri, Matteo, Pesce-Rollins, Melissa, Petrucci, Pierre-Olivier, Pilia, Maura, Possenti, Andrea, Puccetti, Simonetta, Ramsey, Brian D., Rankin, John, Ratheesh, Ajay, Roberts, Oliver J., Sgró, Carmelo, Slane, Patrick, Soffitta, Paolo, Spandre, Gloria, Swartz, Douglas A., Tamagawa, Toru, Taverna, Roberto, Tawara, Yuzuru, Tennant, Allyn F., Thomas, Nicholas E., Tombesi, Francesco, Trois, Alessio, Tsygankov, Sergey, Turolla, Roberto, Vink, Jacco, Weisskopf, Martin C., Xie, Fei, and Zane, Silvia
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High Energy Astrophysical Phenomena (astro-ph.HE) ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics - High Energy Astrophysical Phenomena ,Astrophysics - Astrophysics of Galaxies - Abstract
We report the first $> 99\%$ confidence detection of X-ray polarization in BL Lacertae. During a recent X-ray/$\gamma$-ray outburst, a 287 ksec observation (2022 November 27-30) was taken using the Imaging X-ray Polarimetry Explorer ({\it IXPE}), together with contemporaneous multiwavelength observations from the Neil Gehrels {\it Swift} observatory and {\it XMM-Newton} in soft X-rays (0.3--10~keV), {\it NuSTAR} in hard X-rays (3--70~keV), and optical polarization from the Calar Alto, and Perkins Telescope observatories. Our contemporaneous X-ray data suggest that the {\it IXPE} energy band is at the crossover between the low- and high-frequency blazar emission humps. The source displays significant variability during the observation, and we measure polarization in three separate time bins. Contemporaneous X-ray spectra allow us to determine the relative contribution from each emission hump. We find $>99\%$ confidence X-ray polarization $\Pi_{2-4{\rm keV}} = 21.7^{+5.6}_{-7.9}\%$ and electric vector polarization angle $\psi_{2-4{\rm keV}} = -28.7 \pm 8.7^{\circ}$ in the time bin with highest estimated synchrotron flux contribution. We discuss possible implications of our observations, including previous {\it IXPE} BL Lacertae pointings, tentatively concluding that synchrotron self-Compton emission dominates over hadronic emission processes during the observed epochs., Comment: Accepted to ApJL. 16 pages, 8 figures
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- 2023
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18. A polarimetrically oriented X-ray stare at the accreting pulsar EXO 2030+375
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Christian Malacaria, Jeremy Heyl, Victor Doroshenko, Sergey S. Tsygankov, Juri Poutanen, Sofia V. Forsblom, Fiamma Capitanio, Alessandro Di Marco, Yujia Du, Lorenzo Ducci, Fabio La Monaca, Alexander A. Lutovinov, Herman L. Marshall, Ilya A. Mereminskiy, Sergey V. Molkov, Alexander A. Mushtukov, Mason Ng, Pierre-Olivier Petrucci, Andrea Santangelo, Andrey E. Shtykovsky, Valery F. Suleimanov, Iv??n Agudo, Lucio A. Antonelli, Matteo Bachetti, Luca Baldini, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Niccol?? Bucciantini, Simone Castellano, Elisabetta Cavazzuti, Chien-Ting Chen, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Niccol?? Di Lalla, Immacolata Donnarumma, Michal Dov??iak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A. Garcia, Shuichi Gunji, Kiyoshi Hayashida, Wataru Iwakiri, Svetlana G. Jorstad, Philip Kaaret, Vladimir Karas, Fabian Kislat, Takao Kitaguchi, Jeffery J. Kolodziejczak, Henric Krawczynski, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Fr??d??ric Marin, Andrea Marinucci, Alan P. Marscher, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Fabio Muleri, Michela Negro, Chi-Yung Ng, Stephen L. O???Dell, Nicola Omodei, Chiara Oppedisano, Alessandro Papitto, George G. Pavlov, Abel L. Peirson, Matteo Perri, Melissa Pesce-Rollins, Maura Pilia, Andrea Possenti, Simonetta Puccetti, Brian D. Ramsey, John Rankin, Ajay Ratheesh, Oliver J. Roberts, Roger W. Romani, Carmelo Sgr??, Patrick Slane, Paolo Soffitta, Gloria Spandre, Douglas A. Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Allyn F. Tennant, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Roberto Turolla, Jacco Vink, Martin C. Weisskopf, Kinwah Wu, Fei Xie, Silvia Zane, Malacaria, Christian, Heyl, Jeremy, Doroshenko, Victor, Tsygankov, Sergey S., Poutanen, Juri, Forsblom, Sofia V., Capitanio, Fiamma, Di Marco, Alessandro, Du, Yujia, Ducci, Lorenzo, La Monaca, Fabio, Lutovinov, Alexander A., Marshall, Herman L., Mereminskiy, Ilya A., Molkov, Sergey V., Mushtukov, Alexander A., Ng, Mason, Petrucci, PIERRE-OLIVIER, Santangelo, Andrea, Shtykovsky, Andrey E., Suleimanov, Valery F., Agudo, Iv??n, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bianchi, Stefano, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccol??, Castellano, Simone, Cavazzuti, Elisabetta, Chen, Chien-Ting, Ciprini, Stefano, Costa, Enrico, DE ROSA, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Di Lalla, Niccol??, Donnarumma, Immacolata, Dov??iak, Michal, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Fabiani, Sergio, Ferrazzoli, Riccardo, Garcia, Javier A., Gunji, Shuichi, Hayashida, Kiyoshi, Iwakiri, Wataru, Jorstad, Svetlana G., Kaaret, Philip, Karas, Vladimir, Kislat, Fabian, Kitaguchi, Takao, Kolodziejczak, Jeffery J., Krawczynski, Henric, Latronico, Luca, Liodakis, Ioanni, Maldera, Simone, Manfreda, Alberto, Marin, Fr??d??ric, Marinucci, Andrea, Marscher, Alan P., Massaro, Francesco, Matt, Giorgio, Mitsuishi, Ikuyuki, Mizuno, Tsunefumi, Muleri, Fabio, Negro, Michela, Ng, Chi-Yung, O???dell, Stephen L., Omodei, Nicola, Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel L., Perri, Matteo, Pesce-Rollins, Melissa, Pilia, Maura, Possenti, Andrea, Puccetti, Simonetta, Ramsey, Brian D., Rankin, John, Ratheesh, Ajay, Roberts, Oliver J., Romani, Roger W., Sgr??, Carmelo, Slane, Patrick, Soffitta, Paolo, Spandre, Gloria, Swartz, Douglas A., Tamagawa, Toru, Tavecchio, Fabrizio, Taverna, Roberto, Tawara, Yuzuru, Tennant, Allyn F., Thomas, Nicholas E., Tombesi, Francesco, Trois, Alessio, Turolla, Roberto, Vink, Jacco, Weisskopf, Martin C., Wu, Kinwah, Xie, Fei, and Zane, Silvia
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- 2023
19. IXPE observations of the quintessential wind-accreting X-ray pulsar Vela X-1
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Forsblom, Sv, Poutanen, J, Tsygankov, Ss, Bachetti, M, Marco, Ad, Doroshenko, V, Heyl, J, Monaca, Fl, Malacaria, C, Marshall, Hl, Muleri, F, Mushtukov, Aa, Pilia, M, Rogantini, D, Suleimanov, Vf, Taverna, R, Xie, F, Agudo, I, Antonelli, La, Baldini, L, Baumgartner, Wh, Bellazzini, R, Bianchi, S, Bongiorno, Sd, Bonino, R, Brez, A, Bucciantini, N, Capitanio, F, Castellano, S, Cavazzuti, E, Chen, Ct, Ciprini, S, Costa, E, De Rosa, A, Del Monte, E, Di Gesu, L, Di Lalla, N, Donnarumma, I, Dovciak, M, Ehlert, Sr, Enoto, T, Evangelista, Y, Fabiani, S, Ferrazzoli, R, Garcia, Ja, Gunji, S, Hayashida, K, Iwakiri, W, Jorstad, Sg, Kaaret, P, Karas, V, Kitaguchi, T, Kolodziejczak, Jj, Krawczynski, H, Latronico, L, Liodakis, I, Maldera, S, Manfreda, A, Marin, F, Marinucci, A, Marscher, Ap, Matt, G, Mitsuishi, I, Mizuno, T, Negro, M, Cy, Ng, O'Dell, Sl, Omodei, N, Oppedisano, C, Papitto, A, Pavlov, Gg, Peirson, Al, Perri, M, Pesce-Rollins, M, Petrucci, Po, Possenti, A, Puccetti, S, Ramsey, Bd, Rankin, J, Ratheesh, A, Roberts, Oj, Romani, Rw, Sgro, C, Slane, P, Soffitta, P, Spandre, G, Sunyaev, Ra, Swartz, Da, Tamagawa, T, Tavecchio, F, Tawara, Y, Tennant, Af, Thomas, Ne, Tombesi, F, Trois, A, Turolla, R, Vink, J, Weisskopf, Mc, Kw, Wu, Zane, S, Ixpe, Collaboration, Ministerio de Ciencia e Innovación (España), Academy of Finland, German Research Foundation, Forsblom, Sofia V., Poutanen, Juri, Tsygankov, Sergey S., Bachetti, Matteo, Marco, Alessandro Di, Doroshenko, Victor, Heyl, Jeremy, Monaca, Fabio La, Malacaria, Christian, Marshall, Herman L., Muleri, Fabio, Mushtukov, Alexander A., Pilia, Maura, Rogantini, Daniele, Suleimanov, Valery F., Taverna, Roberto, Xie, Fei, Agudo, Iván, Antonelli, Lucio A., Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bianchi, Stefano, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccolò, Capitanio, Fiamma, Castellano, Simone, Cavazzuti, Elisabetta, Chen, Chien-Ting, Ciprini, Stefano, Costa, Enrico, De Rosa, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Di Lalla, Niccolò, Donnarumma, Immacolata, Dovčiak, Michal, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Fabiani, Sergio, Ferrazzoli, Riccardo, Garcia, Javier A., Gunji, Shuichi, Hayashida, Kiyoshi, Iwakiri, Wataru, Jorstad, Svetlana G., Kaaret, Philip, Karas, Vladimir, Kitaguchi, Takao, Kolodziejczak, Jeffery J., Krawczynski, Henric, Latronico, Luca, Liodakis, Ioanni, Maldera, Simone, Manfreda, Alberto, Marin, Frédéric, Marinucci, Andrea, Marscher, Alan P., Matt, Giorgio, Mitsuishi, Ikuyuki, Mizuno, Tsunefumi, Negro, Michela, Ng, Chi-Yung, O’Dell, Stephen L., Omodei, Nicola, Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel L., Perri, Matteo, Pesce-Rollins, Melissa, Petrucci, Pierre-Olivier, Possenti, Andrea, Puccetti, Simonetta, Ramsey, Brian D., Rankin, John, Ratheesh, Ajay, Roberts, Oliver J., Romani, Roger W., Sgrò, Carmelo, Slane, Patrick, Soffitta, Paolo, Spandre, Gloria, Sunyaev, Rashid A., Swartz, Douglas A., Tamagawa, Toru, Tavecchio, Fabrizio, Tawara, Yuzuru, Tennant, Allyn F., Thomas, Nicholas E., Tombesi, Francesco, Trois, Alessio, Turolla, Roberto, Vink, Jacco, Weisskopf, Martin C., Wu, Kinwah, and Zane, Silvia
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High Energy Astrophysical Phenomena (astro-ph.HE) ,Space and Planetary Science ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Full list of authors: Forsblom, Sofia; Poutanen, Juri S.; Tsygankov, Sergey; Bachetti, Matteo; Marco, Alessandro Di; Doroshenko, Victor; Heyl, Jeremy; Monaca, Fabio La; Malacaria, Christian L.; Marshall, Herman; Muleri, Fabio A.; Mushtukov, Alexander; Pilia, Maura; Rogantini, Daniele F.; Suleimanov, Valery; Taverna, Roberto; Xie, Fei; Agudo, Ivan A.; Antonelli, Lucio; Baldini, Luca H.; Baumgartner, Wayne; Bellazzini, Ronaldo; Bianchi, Stefano D.; Bongiorno, Stephen; Bonino, Raffaella; Brez, Alessandro; Bucciantini, Niccolo; Capitanio, Fiamma; Castellano, Simone; Cavazzuti, Elisabetta; Chen, Chien-Ting; Ciprini, Stefano; Costa, Enrico; De Rosa, Alessandra; Del Monte, Ettore; Di Gesu, Laura; Di Lalla, Niccolo; Donnarumma, Immacolata; Dovciak, Michal R.; Ehlert, Steven; Enoto, Teruaki; Evangelista, Yuri; Fabiani, Sergio; Ferrazzoli, Riccardo A.; Garcia, Javier; Gunji, Shuichi; Hayashida, Kiyoshi; Iwakiri, Wataru G.; Jorstad, Svetlana; Kaaret, Philip; Karas, Vladimir; Kitaguchi, Takao J.; Kolodziejczak, Jeffery; Krawczynski, Henric; Latronico, Luca; Liodakis, Ioannis; Maldera, Simone; Manfreda, Alberto; Marin, Frederic; Marinucci, Andrea P.; Marscher, Alan; Matt, Giorgio; Mitsuishi, Ikuyuki; Mizuno, Tsunefumi; Negro, Michela; Ng, Chi-Yung L.; O'Dell, Stephen; Omodei, Nicola; Oppedisano, Chiara; Papitto, Alessandro G.; Pavlov, George L.; Peirson, Abel; Perri, Matteo; Pesce-Rollins, Melissa; Petrucci, Pierre-Olivier; Possenti, Andrea; Puccetti, Simonetta D.; Ramsey, Brian; Rankin, John; Ratheesh, Ajay J.; Roberts, Oliver W.; Romani, Roger; Sgro, Carmelo; Slane, Patrick; Soffitta, Paolo; Spandre, Gloria A.; Sunyaev, Rashid A.; Swartz, Douglas; Tamagawa, Toru; Tavecchio, Fabrizio; Tawara, Yuzuru F.; Tennant, Allyn E.; Thomas, Nicholas; Tombesi, Francesco; Trois, Alessio; Turolla, Roberto; Vink, Jacco C.; Weisskopf, Martin; Wu, Kinwah; Zane, Silvia; IXPE Collaboration.--This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited., The radiation from accreting X-ray pulsars was expected to be highly polarized, with some estimates for the polarization degree of up to 80%. However, phase-resolved and energy-resolved polarimetry of X-ray pulsars is required in order to test different models and to shed light on the emission processes and the geometry of the emission region. Here we present the first results of the observations of the accreting X-ray pulsar Vela X-1 performed with the Imaging X-ray Polarimetry Explorer. Vela X-1 is considered to be the archetypal example of a wind-accreting, high-mass X-ray binary system, consisting of a highly magnetized neutron star accreting matter from its supergiant stellar companion. The spectropolarimetric analysis of the phase-averaged data for Vela X-1 reveals a polarization degree (PD) of 2.3% ± 0.4% at the polarization angle (PA) of −47fdg3 ± 5fdg4. A low PD is consistent with the results obtained for other X-ray pulsars and is likely related to the inverse temperature structure of the neutron star atmosphere. The energy-resolved analysis shows the PD above 5 keV reaching 6%–10% and a ∼90° difference in the PA compared to the data in the 2–3 keV range. The phase-resolved spectropolarimetric analysis finds a PD in the range 0%–9% with the PA varying between −80° and 40°. © 2023. The Author(s). Published by the American Astronomical Society., The Imaging X-ray Polarimetry Explorer (IXPE) is a joint US and Italian mission. The US contribution is supported by the National Aeronautics and Space Administration (NASA) and led and managed by its Marshall Space Flight Center (MSFC), with industry partner Ball Aerospace (contract NNM15AA18C). The Italian contribution is supported by the Italian Space Agency (Agenzia Spaziale Italiana, ASI) through contract ASI-OHBI-2017-12-I.0, agreements ASI-INAF-2017-12-H0 and ASI-INFN-2017.13-H0, and its Space Science Data Center (SSDC) with agreements ASI-INAF-2022-14-HH.0 and ASI-INFN 2021-43-HH.0, and by the Istituto Nazionale di Astrofisica (INAF) and the Istituto Nazionale di Fisica Nucleare (INFN) in Italy. This research used data products provided by the IXPE Team (MSFC, SSDC, INAF, and INFN) and distributed with additional software tools by the High-Energy Astrophysics Science Archive Research Center (HEASARC), at NASA Goddard Space Flight Center (GSFC). We acknowledge support from the RSF grant 19-12-00423 (SST), the Academy of Finland grants 333112, 349144, 349373, and 349906 (JP, SST), the German Academic Exchange Service (DAAD) travel grant 57525212 (VD, VFS), and the German Research Foundation (DFG) grant WE 1312/53-1 (VFS)., With funding from the Spanish government through the "Severo Ochoa Centre of Excellence" accreditation (CEX2021-001131-S).
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- 2023
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20. Can we overcome the heterogeneity of mood disorders in clinical trials?
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Aswin Ratheesh, Michael Berk, and Lianne Schmaal
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Psychiatry and Mental health ,General Medicine - Published
- 2023
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21. Current Progress and Technological Challenges in Translational<scp>3D</scp>Bioprinting
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Greeshma Ratheesh, Natividad G. Cerezo, Weidong Gao, Jayanti Mendhi, Prashant Sonar, and Yin Xiao
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- 2022
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22. Aromatic Ring Overlap Pedals the Nature of Exciton Coupling and Carrier Transport in a Series of Electron-Deficient Anthracenes
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Tapan Ghosh, Kalyan Jyoti Kalita, Nandu Ashtaman Pillai Syamaladevi, and Ratheesh K. Vijayaraghavan
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General Energy ,Physical and Theoretical Chemistry ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials - Published
- 2022
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23. Impact of the Upper Ocean Processes on Intensification of Cyclone Amphan
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K. Maneesha, Smitha Ratheesh, and T. V. S. Udaya Bhaskar
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Geography, Planning and Development ,Earth and Planetary Sciences (miscellaneous) - Published
- 2022
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24. Pyrimidine derivatives as EGFR tyrosine kinase inhibitors in non‐small‐cell lung cancer: A comprehensive review
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Anandu, Kizhakkedath Ratheesh, Ajay, Pottankottu Jayan, Aneesh Thankappan, Presanna, and Saiprabha Vijayakumar, Nirmala
- Subjects
ErbB Receptors ,Pharmacology ,Lung Neoplasms ,Drug Resistance, Neoplasm ,Carcinoma, Non-Small-Cell Lung ,Mutation ,Drug Discovery ,Organic Chemistry ,Humans ,Molecular Medicine ,Amino Acids ,Protein Kinase Inhibitors ,Biochemistry - Abstract
EGFR-positive non-small-cell lung cancer (NSCLC) due to primary mutation (EGFR DEL19L858R) has been recognized as a crucial mediator of tumor progression. This led to the development and approval of EGFR tyrosine kinase inhibitors, which addresses EGFR-mediated NSCLC but fail to show potency after initial months of therapy due to acquired resistance (EGFR T790M, EGFR C797S). Extensive research allowed identification of drugs for EGFR-positive NSCLC, wherein the majority of compounds have a pyrimidine substructure offering marked therapeutic benefits compared with chemotherapy. This current review outlines the diverse pyrimidine derivatives with amino-linked and fused pyrimidine scaffolds such as furo-pyrimidine, pyrimido-pyrimidine, thieno-pyrimidine, highlighting pyrimidine EGFR TK inhibitors reported in research emphasizing structural aspects, design approaches, inhibition potential, selectivity profile toward mutant EGFR conveyed through biological evaluation studies. Furthermore, mentioning the in-silico interaction profile of synthesized compounds for evaluating the binding affinity with key amino acids. The epilogue of review focuses on the recent research that drives forward to aid in the discovery and development of substituted amino and fused scaffolds of pyrimidine that can counteract the mutations and effectively manage EGFR-positive NSCLC.
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- 2022
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25. Optimization of Solid Waste Management in Ganapathipuram Panchayat-KanyaKumari District, Tamil Nadu, India
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R. Rajkumar, C. Aspin, D. Melbin, and R. S. Ratheesh Kumar
- Subjects
General Earth and Planetary Sciences ,General Environmental Science - Abstract
Solid waste management may be defined as the discipline associated with the control of generation, storage, collection, transfer, processing and disposal of solid waste. This paper presents the current status of solid waste management (SWM) system of Ganapathipuram town panchayat one of the municipalities of Kanyakumari district, Tamil Nadu, India. The study provides an overview of generation, segregation, collection, transportation, disposal and recycling of municipal solid waste with emphasis on assessment of the type and mode of waste disposal practices followed by the households. The main objective of the study is to identify the major problems and limitations that hinder improvement in the current SWM practices and finally suggest remedial measures. Basic information was gathered from municipality and representative ward members. A detailed field survey was carried out with documentary and photographic investigations and also using a questionnaire which was circulated among the households. The study reveals that the present system of SWM is inadequate, as the average collection efficiency is only 45%-50% of non-segregated waste.
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- 2022
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26. Lipid biomarkers as organic matter source indicators of estuarine mangrove ecosystems
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C. S. Ratheesh Kumar, O. S. Gayathry, V. B. Rakesh, A. Sudha, Roshni Mohan, P. M. Salas, P. Resmi, Manju Mary Joseph, K. Shameem, and N. Chandramohanakumar
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Ecology ,General Earth and Planetary Sciences ,Ecology, Evolution, Behavior and Systematics ,General Environmental Science - Published
- 2022
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27. Cognitive health treatment priorities and preferences among young people with mental illness: The your mind, your choice survey
- Author
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Shayden Bryce, Nicholas Cheng, Alex Dalton, Angelica Ojinnaka, Alexandra Stainton, Isabel Zbukvic, Aswin Ratheesh, Chris O'Halloran, Jacquie Uren, Jesse Gates, Rothanthi Daglas‐Georgiou, Stephen J. Wood, and Kelly Allott
- Subjects
Psychiatry and Mental health ,Pshychiatric Mental Health ,Biological Psychiatry - Published
- 2023
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28. X-ray Polarization Reveals the Precessions of the Neutron Star in Hercules X-1
- Author
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Jeremy Heyl, Victor Doroshenko, Denis González-Caniulef, Ilaria Caiazzo, Juri Poutanen, Alexander Mushtukov, Sergey Tsygankov, Demet Kirmizibayrak, Matteo Bachetti, George Pavlov, Iván Agudo, Lucio Antonelli, Luca Baldini, Wayne Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen Bongiorno, Raffaella Bonino, Alessandro Brez, Niccolò Bucciantini, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Chien-Ting Chen, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Niccolo Di Lalla, Alessandro Di Marco, Immacolata Donnarumma, Michal Dovciak, Steven Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier Garcia, Shuichi Gunji, Wataru Iwakiri, Svetlana Jorstad, Philip Kaaret, Vladimir Karas, Fabian Kislat, Takao Kitaguchi, Jeffery Kolodziejczak, Henric Krawczynski, Fabio La Monaca, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frederic Marin, Andrea Marinucci, Alan Marscher, Herman Marshall, Francesco Massaro, Giorgio Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Fabio Muleri, Michela Negro, C.-Y. Ng, Stephen O'Dell, Nicola Omodei, Chiara Oppedisano, Alessandro Papitto, Abel Peirson, Matteo Perri, Melissa Pesce-Rollins, Pierre-Olivier Petrucci, Maura Pilia, Andrea Possenti, Simonetta Puccetti, Brian Ramsey, John Rankin, Ajay Ratheesh, Oliver Roberts, Roger Romani, Carmelo Sgro, Patrick Slane, Paolo Soffitta, Gloria Spandre, Doug Swartz, Toru Tamagawa, Fabrizio Tavecchio, Roberto Taverna, Yuzuru Tawara, Allyn Tennant, Nicholas Thomas, Francesco Tombesi, Alessio Trois, Roberto Turolla, Jacco Vink, Martin Weisskopf, Kinwah Wu, Fei Xie, and Silvia Zane
- Abstract
In an X-ray pulsar, a neutron star accretes matter from a stellar companion through an accretion disk. The high magnetic field of the rotating neutron star disrupts the inner edge of the disc, funneling the gas to flow onto the magnetic poles on its surface. Hercules X-1 is in many ways the prototypical X-ray pulsar; it shows persistent X-ray emission and it resides with its companion HZ Her, a two-solar-mass star, at about 7~kpc from Earth1. Its emission varies on three distinct timescales2 the neutron star rotates every 1.2~seconds, it is eclipsed by its companion each 1.7~days, and the system exhibits a superorbital period of 35~days which has remained remarkably stable since its discovery3. Several lines of evidence point to the source of this variation as the precession of the accretion disc4,5, the precession of the neutron star6,7 or both8. Despite the many hints over the past fifty years, the precession of the neutron star itself has yet not been confirmed or refuted. We here present X-ray polarization measurements with the Imaging X-ray Polarimetry Explorer9 (IXPE) which probe the spin geometry of the neutron star. These observations provide direct evidence that the 35-day-period is set by the free precession of the neutron star crust, which has the important implication that its moment of inertia eigenvalues differ fractionally by a few parts per ten million10. Furthermore, we find indications that the basic spin geometry of the neutron star is altered by torques on timescale of a few hundred days.
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- 2023
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29. ENTREPRENEURS PERCEPTION ON SME SCHEMES OFFERED BY THE BANKING AND NON BANKING INSTITUTIONS IN COIMBATORE DISTRICT
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K. Ratheesh Kumar* & Dr. P. Pavithra
- Subjects
Entrepreneur, Perception, Banking, Schemes, Smes, Sector, Industial, Etc - Abstract
SME sector is the key area for marking the economic growth in our country. The rise in the SME sector plays an important role, especially in a developing country like our country India. The primary data needed for the study has been collected through well structured questionnaire. The sample size of 105 respondents was selected from Coimbatore District. The selected samples were tabulated and analysed analyzed using simple percentage, Chi square test, standard deviation and ANOVA. The study concluded that Indian Government and Tamil Nadu Government have taken various efforts to improve the economy by providing relief measures to the SME units to increase their number vis-àvis improving employment opportunity, exports and Country’s GDP., {"references":["1.\tSonnenfeld, Jeffrey A. (September 2002). What Makes Great Boards Great. Harvard Business Review, pp. 106-13. 199. 2.\tLindsay, Noel J.; and Justin Craig. (Winter 2002). A Framework for Understanding Opportunity Recognition. The Journal of Private Equity. pp. 13-24. 133. 3.\tLing-yee, Li; and Gabriel O. Ogunmokun. (2001). Effect of Export Financing Resources and Supply-Chain Skills on Export Competitive Advantages: Implications for Superior Export Performance. Journal of World Business, vol. 36, no. 3, pp. 260-79. 134. 4.\tLodish, Leonard. (May-June 2001). Building Marketing Models That Make Money. Interfaces, vol. 31, no. 3, part 2, pp. S45-S55. 5.\tMichael, Steven C. (2000).Investment to Create Bargaining Power: The Case of Franchising. Strategic Management Journal, vol. 21, no. 4, pp. 497-517. 148. 6.\tMichael, Steven C. (2003). First Mover Advantage through Franchising. Journal of Business Venturing. Vol. 18, no. 1, pp. 61-81. 149. 7.\tMinerm, J.; R. Norman; and J. S. Brecker. (1992). Defining the Inventor-Entrepreneur in the Context of Established Typologies. Journal of Business Venturing, vol. 7, no. 2, pp. 103-13. 8.\tSorenson, Olav; and Toby E. Stuart. (2001). Syndication Networks and the Spatial Distribution of Venture Capital Investments. American Journal of Sociology, vol. 106, no. 6, pp. 1546-88. 9.\tK. Veerakumar & A. Dinesh Kumar, \"People Preference towards Organic Products\", International Journal of Recent Research and Applied Studies, Volume 4, Issue 7, Page Number 73-75, 2017. 10.\tK. Veerakumar & A. Dinesh Kumar, \"Challenges of Agricultural Development\", International Journal of Recent Research and Applied Studies , Volume 4, Issue 5, Page Number 76-79, 2017. 11.\tR. Sindhuja & A. Dinesh Kumar, \"A Study on the Level of Work-Life Balance among Medical Representatives\", International Journal of Recent Research and Applied Studies, Volume 5, Issue 12, Page Number 28-33, 2018."]}
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- 2023
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30. Distributional Record of Crested Hairtail, Tentoriceps cristatus (Trichiuridae) at Central West Coast of India
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A Anuraj, P P Suresh Babu, N S Jeena, K V Akhilesh, Aditya Haridas Kamath, R Ratheesh Kumar, K A Sajeela, Mahendra Pal, P Anjulekshmi, and Boby Ignatius
- Subjects
Aquatic Science ,Oceanography - Published
- 2023
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31. Appreciation of Muttusvami Dikshitar's Navāvaraṇa Kṛti in the Raga Śankarabharanam
- Author
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Ratheesh P.R
- Subjects
Āvaraṇa, Kṛti, Pallavi, Anupallavi, Caraṇam - Abstract
Muttusvami Dikshitar, who is one of the Trinity of Carnatic Music, was born in Thiruvarur. He was a great Devi Upasaka and out of his devotion to Kamalāmba, the celebrated deity at the famous Tyagaraja temple in Thiruvarur, Dikshitar has composed nine compositions on Goddess Kamalāmbika. These compositions show his proficiency in the Sanskrit language, especially Sri Cakra and its Āvaraṇa-s. Though these compositions are nine in number, they are preceded by a Dhyana kṛti and succeeded by a Mangala kṛti. Navāvaraṇa kirtan-s are composed based on the Vibhakti (case ending) of Sanskrit grammar. Muttusvami Dikshitar’s devotional outpourings towards Goddess Kamalāmba can be seen in these compositions. The composition ‘Sri Kamalāmbikayā’ composed in the raga Śankarabharanam is taken here for analysis. This is an attempt to analyse the melodic, rhythmical, textual and philosophical aspects of the particular composition
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- 2023
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32. Use of Balloon Occluded Retrograde Transvenous Obliteration (BRTO) for Treatment of Gastric Varices: A Narrative Review
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Anum Khakwani, Manan Trivedi, Maham Afzal, Puneet Kahlon, Khola ., Parakh Patel, Punith Chowdary Chirumamilla, Rimsha R Vohra, Rani Ratheesh, Midhun Mathew, Zain U Abdin, and Zahra Nazir
- Subjects
General Engineering - Published
- 2023
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- View/download PDF
33. Phytochemical constituents, bioactivity, traditional uses and nutritional properties of Bruguiera cylindrica (L.) Blume: a comprehensive review
- Author
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P. S. Stephy, C. S. Ratheesh Kumar, and N. Chandramohanakumar
- Subjects
Plant Science - Published
- 2023
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- View/download PDF
34. Multi-dimensional cascades neural network models for the segmentation of retinal vessels in colour fundus images
- Author
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A. Jayachandran, S. Ratheesh Kumar, and T. Sudarson Rama Perumal
- Subjects
Computer Networks and Communications ,Hardware and Architecture ,Media Technology ,Software - Published
- 2023
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35. Experimental investigations on the thermal properties of rare earth-metal oxide based therminol nano fluids for heat transfer applications
- Author
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R Ravikumar, G M Joselin Herbert, Leo Binoy, R Ratheesh, T S Krishnakumar, and C R Indulal
- Subjects
Multidisciplinary - Published
- 2023
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36. Architecture and Implementation of a patient criticality aware Edge-Cloud offloading technique
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Athira B Menon, Krishna Rajeev, Jyothika S, Karthika Ratheesh, and Rahul Krishnan Pathinarupothi
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- 2023
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37. Flexural behavior of the untreated plain bamboo reinforced concrete beam under four-point loading
- Author
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Abin Anto, Alan Augustin, Rejitha Ratheesh, and C.S. Belarmin Xavier
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General Medicine - Published
- 2023
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38. Polarized x-rays from a magnetar
- Author
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Roberto Taverna, Roberto Turolla, Fabio Muleri, Jeremy Heyl, Silvia Zane, Luca Baldini, Denis González-Caniulef, Matteo Bachetti, John Rankin, Ilaria Caiazzo, Niccolò Di Lalla, Victor Doroshenko, Manel Errando, Ephraim Gau, Demet Kırmızıbayrak, Henric Krawczynski, Michela Negro, Mason Ng, Nicola Omodei, Andrea Possenti, Toru Tamagawa, Keisuke Uchiyama, Martin C. Weisskopf, Ivan Agudo, Lucio A. Antonelli, Wayne H. Baumgartner, Ronaldo Bellazzini, Stefano Bianchi, Stephen D. Bongiorno, Raffaella Bonino, Alessandro Brez, Niccolò Bucciantini, Fiamma Capitanio, Simone Castellano, Elisabetta Cavazzuti, Stefano Ciprini, Enrico Costa, Alessandra De Rosa, Ettore Del Monte, Laura Di Gesu, Alessandro Di Marco, Immacolata Donnarumma, Michal Dovčiak, Steven R. Ehlert, Teruaki Enoto, Yuri Evangelista, Sergio Fabiani, Riccardo Ferrazzoli, Javier A. Garcia, Shuichi Gunji, Kiyoshi Hayashida, Wataru Iwakiri, Svetlana G. Jorstad, Vladimir Karas, Takao Kitaguchi, Jeffery J. Kolodziejczak, Fabio La Monaca, Luca Latronico, Ioannis Liodakis, Simone Maldera, Alberto Manfreda, Frédéric Marin, Andrea Marinucci, Alan P. Marscher, Herman L. Marshall, Giorgio Matt, Ikuyuki Mitsuishi, Tsunefumi Mizuno, Stephen C.-Y. Ng, Stephen L. O’Dell, Chiara Oppedisano, Alessandro Papitto, George G. Pavlov, Abel L. Peirson, Matteo Perri, Melissa Pesce-Rollins, Maura Pilia, Juri Poutanen, Simonetta Puccetti, Brian D. Ramsey, Ajay Ratheesh, Roger W. Romani, Carmelo Sgrò, Patrick Slane, Paolo Soffitta, Gloria Spandre, Fabrizio Tavecchio, Yuzuru Tawara, Allyn F. Tennant, Nicholas E. Thomas, Francesco Tombesi, Alessio Trois, Sergey S. Tsygankov, Jacco Vink, Kinwah Wu, Fei Xie, Taverna, Roberto, Turolla, Roberto, Muleri, Fabio, Heyl, Jeremy, Zane, Silvia, Baldini, Luca, González-Caniulef, Deni, Bachetti, Matteo, Rankin, John, Caiazzo, Ilaria, Di Lalla, Niccolò, Doroshenko, Victor, Errando, Manel, Gau, Ephraim, Kırmızıbayrak, Demet, Krawczynski, Henric, Negro, Michela, Ng, Mason, Omodei, Nicola, Possenti, Andrea, Tamagawa, Toru, Uchiyama, Keisuke, Weisskopf, Martin C., Agudo, Ivan, Antonelli, Lucio A., Baumgartner, Wayne H., Bellazzini, Ronaldo, Bianchi, Stefano, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccolò, Capitanio, Fiamma, Castellano, Simone, Cavazzuti, Elisabetta, Ciprini, Stefano, Costa, Enrico, De Rosa, Alessandra, Del Monte, Ettore, Di Gesu, Laura, Di Marco, Alessandro, Donnarumma, Immacolata, Dovčiak, Michal, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Fabiani, Sergio, Ferrazzoli, Riccardo, Garcia, Javier A., Gunji, Shuichi, Hayashida, Kiyoshi, Iwakiri, Wataru, Jorstad, Svetlana G., Karas, Vladimir, Kitaguchi, Takao, Kolodziejczak, Jeffery J., La Monaca, Fabio, Latronico, Luca, Liodakis, Ioanni, Maldera, Simone, Manfreda, Alberto, Marin, Frédéric, Marinucci, Andrea, Marscher, Alan P., Marshall, Herman L., Matt, Giorgio, Mitsuishi, Ikuyuki, Mizuno, Tsunefumi, Ng, Stephen C. -Y., O’Dell, Stephen L., Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel L., Perri, Matteo, Pesce-Rollins, Melissa, Pilia, Maura, Poutanen, Juri, Puccetti, Simonetta, Ramsey, Brian D., Ratheesh, Ajay, Romani, Roger W., Sgrò, Carmelo, Slane, Patrick, Soffitta, Paolo, Spandre, Gloria, Tavecchio, Fabrizio, Tawara, Yuzuru, Tennant, Allyn F., Thomas, Nicholas E., Tombesi, Francesco, Trois, Alessio, Tsygankov, Sergey S., Vink, Jacco, Wu, Kinwah, Xie, Fei, High Energy Astrophys. & Astropart. Phys (API, FNWI), Ministerio de Ciencia e Innovación (España), and Natural Sciences and Engineering Research Council of Canada
- Subjects
High Energy Astrophysical Phenomena (astro-ph.HE) ,Multidisciplinary ,Settore FIS/05 ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Full list of authors: Taverna, Roberto; Turolla, Roberto; Muleri, Fabio; Heyl, Jeremy; Zane, Silvia; Baldini, Luca; Gonzalez-Caniulef, Denis; Bachetti, Matteo; Rankin, John; Caiazzo, Ilaria; Di Lalla, Niccolo; Doroshenko, Victor; Errando, Manel; Gau, Ephraim; Kirmizibayrak, Demet; Krawczynski, Henric; Negro, Michela; Ng, Mason; Omodei, Nicola; Possenti, Andrea; Tamagawa, Toru; Uchiyama, Keisuke; Weisskopf, Martin C.; Agudo, Ivan; Antonelli, Lucio A.; Baumgartner, Wayne H.; Bellazzini, Ronaldo; Bianchi, Stefano; Bongiorno, Stephen D.; Bonino, Raffaella; Brez, Alessandro; Bucciantini, Niccolo; Capitanio, Fiamma; Castellano, Simone; Cavazzuti, Elisabetta; Ciprini, Stefano; Costa, Enrico; De Rosa, Alessandra; Del Monte, Ettore; Di Gesu, Laura; Di Marco, Alessandro; Donnarumma, Immacolata; Doviak, Michal; Ehlert, Steven R.; Enoto, Teruaki; Evangelista, Yuri; Fabiani, Sergio; Ferrazzoli, Riccardo; Garcia, Javier A.; Gunji, Shuichi; Hayashida, Kiyoshi; Iwakiri, Wataru; Jorstad, Svetlana G.; Karas, Vladimir; Kitaguchi, Takao; Kolodziejczak, Jeffery J.; La Monaca, Fabio; Latronico, Luca; Liodakis, Ioannis; Maldera, Simone; Manfreda, Alberto; Marin, Frederic; Marinucci, Andrea; Marscher, Alan P.; Marshall, Herman L.; Matt, Giorgio; Mitsuishi, Ikuyuki; Mizuno, Tsunefumi; Ng, Stephen C-Y; O'Dell, Stephen L.; Oppedisano, Chiara; Papitto, Alessandro; Pavlov, George G.; Peirson, Abel L.; Perri, Matteo; Pesce-Rollins, Melissa; Pilia, Maura; Poutanen, Juri; Puccetti, Simonetta; Ramsey, Brian D.; Ratheesh, Ajay; Romani, Roger W.; Sgro, Carmelo; Slane, Patrick; Soffitta, Paolo; Spandre, Gloria; Tavecchio, Fabrizio; Tawara, Yuzuru; Tennant, Allyn F.; Thomas, Nicolas E.; Tombesi, Francesco; Trois, Alessio; Tsygankov, Sergey; Vink, Jacco; Wu, Kinwah; Xie, Fei., Magnetars are neutron stars with ultrastrong magnetic fields, which can be observed in x-rays. Polarization measurements could provide information on their magnetic fields and surface properties. We observed polarized x-rays from the magnetar 4U 0142+61 using the Imaging X-ray Polarimetry Explorer and found a linear polarization degree of 13.5 ± 0.8% averaged over the 2– to 8–kilo–electron volt band. The polarization changes with energy: The degree is 15.0 ± 1.0% at 2 to 4 kilo–electron volts, drops below the instrumental sensitivity ~4 to 5 kilo–electron volts, and rises to 35.2 ± 7.1% at 5.5 to 8 kilo–electron volts. The polarization angle also changes by 90° at ~4 to 5 kilo–electron volts. These results are consistent with a model in which thermal radiation from the magnetar surface is reprocessed by scattering off charged particles in the magnetosphere. © 2022 The Authors., R.Ta. and R.Tu. acknowledge financial support from the Italian MUR through grant PRIN 2017LJ39LM. J.H., D.G.-C., I.C., and D.K. acknowledge the support of the Natural Sciences and Engineering Research Council of Canada (NSERC), funding reference number 5007110, and the Canadian Space Agency. D.G.-C. is a Canadian Institute for Theoretical Astrophysical (CITA) National Fellow (grant no. CITA 490888-16). E.G. and H.K. acknowledge NASA support under grants 80NSSC18K0264, 80NSSC22K1291, 80NSSC21K1817, and NNX16AC24G. M.Ne. acknowledges support from NASA under award 80GSFC21M0002. T.T. was supported by grant JSPS KAKENHI JP19H05609. F.Mu., J.R., S.B., E.Co., E.D.M., A.D.M., Y.E., S.F., R.F., F.L.M., G.M., M.Pe., A.R., P.So., and A.T. were supported by ASI and INAF under grants ASI-INAF-2017-12-H0 and ASI-INAF-2022-14-HH.0. L.B., L.L., R.Be., R.Bo., A.B., S.Ca., S.M., A.Mar., C.O., M.P.-R., C.S., and G.S. were supported by ASI and INFN under grants ASI-INFN-2017.13-H0 and ASI-INFN-2021-43-HH.0., With funding from the Spanish government through the Severo Ochoa Centre of Excellence accreditation SEV-2017-0709.
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- 2022
39. Editorial: Forces in biology - Cell and developmental mechanobiology and its implications in disease - Volume II
- Author
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Selwin K. Wu, Guillermo A. Gomez, Samantha Stehbens, Bipul R. Acharya, Aparna Ratheesh, Rashmi Priya, Anne Lagendijk, Alexander Bershadsky, Wu, Selwin K, Gomez, Guillermo A, Stehbens, Samantha, Acharya, Bipul R, Ratheesh, Aparna, Priya, Rashmi, Lagendijk, Anne, and Bershadsky, Alexander
- Subjects
immunology ,bones and cartilage ,brain ,forces ,cancer ,Cell Biology ,Developmental Biology - Published
- 2022
40. CRISPR-based VEGF suppression using paired guide RNAs for treatment of choroidal neovascularization
- Author
-
Sook Hyun Chung, Tzu-Ni Sin, Brian Dang, Taylor Ngo, Therlinder Lo, Daniella Lent-Schochet, Ratheesh K. Meleppat, Robert J. Zawadzki, and Glenn Yiu
- Subjects
GUIDE-seq ,Aging ,gene editing ,Human Genome ,Clinical Sciences ,neovascular AMD ,AAV ,AMD ,Neurodegenerative ,RNA/DNA Editing [MT] ,ocular gene therapy ,retinal gene therapy ,Macular Degeneration ,CRISPR ,Drug Discovery ,Genetics ,2.1 Biological and endogenous factors ,Molecular Medicine ,Biochemistry and Cell Biology ,CRISPR-Cas9 ,Aetiology ,Eye Disease and Disorders of Vision ,Biotechnology - Abstract
Clustered regularly interspaced short palindromic repeats (CRISPR)-based genomic disruption of vascular endothelial growth factor A (Vegfa) with a single gRNA suppresses choroidal neovascularization (CNV) in preclinical studies, offering the prospect of long-term anti-angiogenesis therapy for neovascular age-related macular degeneration (AMD). Genome editing using CRISPR-CRISPR-associated endonucleases (Cas9) with multiple guide RNAs (gRNAs) can enhance gene-ablation efficacy by augmenting insertion-deletion (indel) mutations with gene truncations but may also increase the risk of off-target effects. In this study, we compare the effectiveness of adeno-associated virus (AAV)-mediated CRISPR-Cas9 systems using single versus paired gRNAs to target two different loci in the Vegfa gene that are conserved in human, rhesus macaque, and mouse. Paired gRNAs increased Vegfa gene-ablation rates in human cells invitro but did not enhance VEGF suppression in mouse eyes invivo. Genome editing using paired gRNAs also showed a similar degree of CNV suppression compared with single-gRNA systems. Unbiased genome-wide analysis using genome-wide unbiased identification of double-stranded breaks (DSBs) enabled by sequencing (GUIDE-seq) revealed weak off-target activity arising from the second gRNA. These findings suggest that invivo CRISPR-Cas9 genome editing using two gRNAs may increase gene ablation but also the potential risk of off-target mutations, while the functional benefit of targeting an additional locus in the Vegfa gene as treatment for neovascular retinal conditions is unclear.
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- 2022
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41. Sound Subjects and Hearing Cultures: Towards an Acoustic Ethnography
- Author
-
Ratheesh Kumar
- Subjects
Sociology and Political Science ,Political Science and International Relations - Published
- 2022
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42. Gender Disparity in Invisible Economy: Lessons from Indian Time Use Survey
- Author
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C. Ratheesh and V. Anitha
- Subjects
Economics and Econometrics - Published
- 2022
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43. Assessment of Coastal Water Quality Parameters Along Mangaluru Region from AVIRIS-NG Hyperspectral Remote Sensing Data
- Author
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Madhumita Tripathy, Ratheesh Ramakrishnan, Dharambhai Shah, Pooja Shah, Bimal Bhattacharya, and Ateeth Shetty
- Subjects
Geography, Planning and Development ,Earth and Planetary Sciences (miscellaneous) - Published
- 2022
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44. Synergistic Fusion of ICESat-2 Lidar and Sentinel-2 Data to Leverage Potential Mapping of Bathymetry in Remote Islands Using SVR
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V. V. Arun Kumar Surisetty, Preeti Rajput, Ratheesh Ramakrishnan, and Ch. Venkateswarlu
- Subjects
Geography, Planning and Development ,Earth and Planetary Sciences (miscellaneous) - Published
- 2022
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45. Camera, LiDAR, and Radar Sensor Fusion Based on Bayesian Neural Network (CLR-BNN)
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Ratheesh Ravindran, Michael J. Santora, and Mohsin M. Jamali
- Subjects
Electrical and Electronic Engineering ,Instrumentation - Published
- 2022
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46. Ba3ZrV4O15 Ceramic-Filled HDPE Composites for Microwave Circuit Applications
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E. K. Suresh, P. V. Narayanan, N. S. Arun, and R. Ratheesh
- Subjects
Materials Chemistry ,Electrical and Electronic Engineering ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials - Published
- 2022
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47. Heavy metal impression in surface sediments and factors governing the fate of macrobenthic communties in tropical estuarine ecosystem, India
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Muralidharan Ratheesh, Kumar, Krishnan Anoop, Krishnan, Varghese, Vimexen, Abdul Kareem, Faisal, Mohan, Mohind, and Vijayan, Arun
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Geologic Sediments ,Health, Toxicology and Mutagenesis ,India ,Mercury ,General Medicine ,Pollution ,Lead ,Metals, Heavy ,Clay ,Environmental Chemistry ,Ecosystem ,Water Pollutants, Chemical ,Cadmium ,Environmental Monitoring - Abstract
The present study aims to investigate the contamination of heavy metals in the sediments of a tropical ecosystem, India, and to evaluate the factors responsible for the dominance of specific macrobenthic communities, particularly in estuarine sediments. For the analysis of Cu, Cr, Ni, Zn, Pb and Cd in sediments, acid digestion and subsequent quantification by microwave plasma atomic emission spectroscopy was performed, whereas for Hg determination, cold vapour atomic absorption spectrophotometry was used. The general trend of the heavy metal concentration was observed as Cr Cu Zn Ni Pb Cd Hg, regardless of any seasonal alteration. The estuarine region was considerably contaminated by Cu and Cr (C.F. 2) irrespective of any seasonal difference, and by Cd in 2017 non-monsoon (CF 3). Heavy metal contamination was most pronounced during the monsoon (2018). Estuarine and marine zone together considered as deteriorated zone especially during monsoon seasons (PLI 1, 2018 monsoon) while riverine zone remained poorly contaminated (PLI 1). Clay Loam/Clay/Heavy Clay textures preferred polychaetes and bivalves in the estuarine and marine zone as compared to other macrobenthic communities (OMC). Among the hydrochemical parameters, total dissolved solids in general and euryhaline and slightly alkaline pH preferred domination of bivalves followed by polychaetes in non-monsoon seasons. The trace metal contamination in estuarine sediments increases the concern of bioaccumulation tendency of dominant bivalves of the estuarine and coastal sediments.
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- 2022
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48. Nearshore suspended sediment concentration and transport pattern along the southern Karnataka coast, India
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Ateeth Shetty, K. S. Jayappa, P. R. Deepak, and R. Ratheesh
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- 2022
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49. Anti-inflammatory and anti-COVID-19 effect of a novel polyherbal formulation (Imusil) via modulating oxidative stress, inflammatory mediators and cytokine storm
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M. Ratheesh, Sujatha Sunil, S. Sheethal, Svenia P. Jose, S. Sandya, Oriparambil Sivaraman Nirmal Ghosh, Sony Rajan, Tariq Jagmag, and Jayesh Tilwani
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Inflammation ,Pharmacology ,SARS-CoV-2 ,Pro-inflammatory cytokines ,Immunology ,Anti-Inflammatory Agents ,COVID-19 ,NOX-2 ,COVID-19 Drug Treatment ,Imusil ,Mice ,Oxidative Stress ,Spectroscopy, Fourier Transform Infrared ,Animals ,Humans ,Original Article ,Pharmacology (medical) ,Inflammation Mediators ,Cytokine Release Syndrome - Abstract
In the current scenario, most countries are affected by COVID-19, a pandemic caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that has a massive impact on human health. Previous studies showed that some traditionally used medicinal herbs and their combinations showed synergistic anti-viral and anti-inflammatory activity against SARS-CoV-2 type infections. Therefore, the goal of this study is to demonstrate the anti-viral and anti-inflammatory effects of a novel polyherbal formulation, hereinafter referred to as Imusil, on Vero E6 cell lines and Raw 264.7 murine macrophage cells respectively. The Imusil was subjected to identify its chemical characterisations such as UV-Visible spectrum profile, Fourier transform infrared spectroscopy (FT-IR) and gas chromatography-mass spectroscopic (GC-MS) analysis. FT-IR analysis of Imusil peak values with various functional compounds such as alcohol, esters, aliphatic and carboxylic acids. GC-MS analysis of compounds with totally 87 compounds major chemical compounds were identified, such as 3-(Octanoyloxy) propane-1,2-diyl bis(decanoate), Succinic acid, 2-methylhex-3-yl 2,2,2-trifluoroethyl ester, Neophytadiene, 3,5,9-Trioxa-4-phosphaheneicosan-1-aminium, 4-hydroxy-N,N,N-trimethyl-10-oxo-7-[(1-oxododecyl)oxy]-, hydroxide, inner salt, 4-oxide, (R)-. The anti-viral activity of Imusil against SARS-CoV-2 was assessed using plaque reduction assay and anti-inflammatory study was conducted on lipopolysaccharide (LPS)-induced RAW 264.7 cells. The results obtained from the study reveal that Imusil significantly inhibited SARS-CoV-2 replication in Vero E6 cells and the production of inflammatory mediator's cyclooxygenase-2 and pro-inflammatory cytokines like tumour necrosis factor-α and interleukin- 6 were significantly reduced, along with thwarting the significant oxidative stress by preventing the expression of NOX-2 thereby inhibiting the reactive oxygen species formation. Hence, considering the current study as a novel strategy for mediating the COVID-19 associated aliments, inceptive scientific evidence of Imusil promises its potential therapeutic implications against COVID-19 and inflammatory conditions.
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- 2022
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50. Minute torsional reorganization elicited a large visible-range fluorescence gain in terphenyl-derived crystals
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Tapan Ghosh, Madalasa Mondal, and Ratheesh K. Vijayaraghavan
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Materials Chemistry ,General Materials Science - Abstract
A minuscule structural change of CF3TP in solid-state impacts the solid-state fluorescence behaviour heavily. A detailed experimental proof for the geometric reorganization upon temperature change or mechanical grinding is described in the manuscript.
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- 2022
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