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Aharonian F, Benkhali FA, Aschersleben J, Ashkar H, Backes M, Martins VB, Batzofin R, Becherini Y, Berge D, Bernlöhr K, Bi B, Böttcher M, Boisson C, Bolmont J, de Lavergne MDB, Borowska J, Bouyahiaoui M, Breuhaus M, Brose R, Brown AM, Brun F, Bruno B, Bulik T, Burger-Scheidlin C, Caroff S, Casanova S, Cecil R, Celic J, Cerruti M, Chand T, Chandra S, Chen A, Chibueze J, Chibueze O, Cotter G, Dai S, Mbarubucyeye JD, Djannati-Ataï A, Dmytriiev A, Doroshenko V, Egberts K, Einecke S, Ernenwein JP, Filipovic M, Fontaine G, Füßling M, Funk S, Gabici S, Ghafourizadeh S, Giavitto G, Glawion D, Glicenstein JF, Grolleron G, Haerer L, Hinton JA, Hofmann W, Holch TL, Holler M, Horns D, Jamrozy M, Jankowsky F, Jardin-Blicq A, Joshi V, Jung-Richardt I, Kasai E, Katarzyński K, Khatoon R, Khélifi B, Klepser S, Kluźniak W, Komin N, Kosack K, Kostunin D, Kundu A, Lang RG, Le Stum S, Leitl F, Lemière A, Lenain JP, Leuschner F, Lohse T, Luashvili A, Lypova I, Mackey J, Malyshev D, Malyshev D, Marandon V, Marchegiani P, Marcowith A, Martí-Devesa G, Marx R, Mehta A, Mitchell A, Moderski R, Mohrmann L, Montanari A, Moulin E, Murach T, Nakashima K, de Naurois M, Niemiec J, Noel AP, Ohm S, Olivera-Nieto L, de Ona Wilhelmi E, Ostrowski M, Panny S, Panter M, Parsons RD, Peron G, Prokhorov DA, Pühlhofer G, Punch M, Quirrenbach A, Reichherzer P, Reimer A, Reimer O, Ren H, Renaud M, Reville B, Rieger F, Rowell G, Rudak B, Ricarte HR, Ruiz-Velasco E, Sahakian V, Salzmann H, Santangelo A, Sasaki M, Schäfer J, Schüssler F, Schwanke U, Shapopi JNS, Sol H, Specovius A, Spencer S, Stawarz L, Steenkamp R, Steinmassl S, Steppa C, Streil K, Sushch I, Suzuki H, Takahashi T, Tanaka T, Taylor AM, Terrier R, Tsirou M, Tsuji N, Unbehaun T, van Eldik C, Vecchi M, Veh J, Venter C, Vink J, Wach T, Wagner SJ, Werner F, White R, Wierzcholska A, Wong YW, Zacharias M, Zargaryan D, Zdziarski AA, Zech A, Zouari S, Żywucka N. Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433. Science 2024; 383:402-406. [PMID: 38271522 DOI: 10.1126/science.adi2048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 12/04/2023] [Indexed: 01/27/2024]
Abstract
SS 433 is a microquasar, a stellar binary system that launches collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.) and found an energy-dependent shift in the apparent position of the gamma-ray emission from the parsec-scale jets. These observations trace the energetic electron population and indicate that inverse Compton scattering is the emission mechanism of the gamma rays. Our modeling of the energy-dependent gamma-ray morphology constrains the location of particle acceleration and requires an abrupt deceleration of the jet flow. We infer the presence of shocks on either side of the binary system, at distances of 25 to 30 parsecs, and that self-collimation of the precessing jets forms the shocks, which then efficiently accelerate electrons.
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Affiliation(s)
- F Aharonian
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - F Ait Benkhali
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - J Aschersleben
- Kapteyn Astronomical Institute, University of Groningen, Groningen 9747 AD, Netherlands
| | - H Ashkar
- Laboratoire Leprince-Ringuet, École Polytechnique, Centre national de la recherche scientifique, Institut Polytechnique de Paris, Palaiseau F-91128, France
| | - M Backes
- Department of Physics, University of Namibia, Windhoek 10005, Namibia
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | | | - R Batzofin
- Institut für Physik und Astronomie, Universität Potsdam, Potsdam 14476, Germany
| | - Y Becherini
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
- Department of Physics and Electrical Engineering, Linnaeus University, Växjö 351 95, Sweden
| | - D Berge
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - K Bernlöhr
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - B Bi
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - M Böttcher
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - C Boisson
- Laboratoire Univers et Théories, Observatoire de Paris, Université Paris Sciences et Lettres, CNRS, Université de Paris, Meudon 92190, France
| | - J Bolmont
- Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Université Paris Diderot, Université Paris Cité, Institut national de physique nucléaire et de physique des particules, Centre national de la recherche scientifique, Paris F-75252, France
| | - M de Bony de Lavergne
- Laboratoire d'Annecy de Physique des Particules, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Université Savoie Mont Blanc, Annecy 74000, France
| | - J Borowska
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - M Bouyahiaoui
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - M Breuhaus
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - R Brose
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
| | - A M Brown
- Department of Physics, University of Oxford, Oxford OX1 3RH, UK
| | - F Brun
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - B Bruno
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - T Bulik
- Astronomical Observatory, The University of Warsaw, Warsaw 00-478, Poland
| | | | - S Caroff
- Laboratoire d'Annecy de Physique des Particules, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Université Savoie Mont Blanc, Annecy 74000, France
| | - S Casanova
- Instytut Fizyki J[Formula: see text]drowej, Polska Akademia Nauk, Kraków 31-342, Poland
| | - R Cecil
- Institut für Experimentalphysik, Universität Hamburg, Hamburg D-22761, Germany
| | - J Celic
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - M Cerruti
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - T Chand
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - S Chandra
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - A Chen
- School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - J Chibueze
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - O Chibueze
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - G Cotter
- Department of Physics, University of Oxford, Oxford OX1 3RH, UK
| | - S Dai
- School of Science, Western Sydney University, Penrith NSW 2751, Australia
| | | | - A Djannati-Ataï
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - A Dmytriiev
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - V Doroshenko
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - K Egberts
- Institut für Physik und Astronomie, Universität Potsdam, Potsdam 14476, Germany
| | - S Einecke
- School of Physical Sciences, University of Adelaide, Adelaide 5005, Australia
| | - J-P Ernenwein
- Centre de Physique des Particules de Marseille, Aix Marseille Université, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Marseille 13288, France
| | - M Filipovic
- School of Science, Western Sydney University, Penrith NSW 2751, Australia
| | - G Fontaine
- Laboratoire Leprince-Ringuet, École Polytechnique, Centre national de la recherche scientifique, Institut Polytechnique de Paris, Palaiseau F-91128, France
| | - M Füßling
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - S Funk
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - S Gabici
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - S Ghafourizadeh
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - G Giavitto
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - D Glawion
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - J-F Glicenstein
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - G Grolleron
- Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Université Paris Diderot, Université Paris Cité, Institut national de physique nucléaire et de physique des particules, Centre national de la recherche scientifique, Paris F-75252, France
| | - L Haerer
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - J A Hinton
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - W Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - T L Holch
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - M Holler
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - D Horns
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - M Jamrozy
- Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków 30-244, Poland
| | - F Jankowsky
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - A Jardin-Blicq
- Laboratoir de de Physique des deux Infinis, Université Bordeaux, CNRS, Gradignan F-33170, France
| | - V Joshi
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - I Jung-Richardt
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - E Kasai
- Department of Physics, University of Namibia, Windhoek 10005, Namibia
| | - K Katarzyński
- Institute of Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Torun 87-100, Poland
| | - R Khatoon
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - B Khélifi
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - S Klepser
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - W Kluźniak
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw 00-716, Poland
| | - Nu Komin
- School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - K Kosack
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - D Kostunin
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - A Kundu
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - R G Lang
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - S Le Stum
- Centre de Physique des Particules de Marseille, Aix Marseille Université, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Marseille 13288, France
| | - F Leitl
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - A Lemière
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - J-P Lenain
- Laboratoire de Physique Nucléaire et de Hautes Energies, Sorbonne Université, Université Paris Diderot, Université Paris Cité, Institut national de physique nucléaire et de physique des particules, Centre national de la recherche scientifique, Paris F-75252, France
| | - F Leuschner
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - T Lohse
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - A Luashvili
- Laboratoire Univers et Théories, Observatoire de Paris, Université Paris Sciences et Lettres, CNRS, Université de Paris, Meudon 92190, France
| | - I Lypova
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - J Mackey
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
| | - D Malyshev
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - D Malyshev
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - V Marandon
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - P Marchegiani
- School of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - A Marcowith
- Laboratoire Univers et Particules de Montpellier, Université Montpellier, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Montpellier F-34095, France
| | - G Martí-Devesa
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - R Marx
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - A Mehta
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - A Mitchell
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - R Moderski
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw 00-716, Poland
| | - L Mohrmann
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - A Montanari
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - E Moulin
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - T Murach
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - K Nakashima
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - M de Naurois
- Laboratoire Leprince-Ringuet, École Polytechnique, Centre national de la recherche scientifique, Institut Polytechnique de Paris, Palaiseau F-91128, France
| | - J Niemiec
- Instytut Fizyki J[Formula: see text]drowej, Polska Akademia Nauk, Kraków 31-342, Poland
| | - A Priyana Noel
- Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków 30-244, Poland
| | - S Ohm
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - L Olivera-Nieto
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | | | - M Ostrowski
- Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków 30-244, Poland
| | - S Panny
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - M Panter
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - R D Parsons
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - G Peron
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - D A Prokhorov
- Gravitation and Astroparticle Physics Amsterdam, Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam 1098 XH, Netherlands
| | - G Pühlhofer
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - M Punch
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - A Quirrenbach
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - P Reichherzer
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - A Reimer
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - O Reimer
- Institut für Astro- und Teilchenphysik, Leopold-Franzens-Universität Innsbruck, Innsbruck A-6020, Austria
| | - H Ren
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - M Renaud
- Laboratoire Univers et Particules de Montpellier, Université Montpellier, Centre national de la recherche scientifique, Institut national de physique nucléaire et de physique des particules, Montpellier F-34095, France
| | - B Reville
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - F Rieger
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - G Rowell
- School of Physical Sciences, University of Adelaide, Adelaide 5005, Australia
| | - B Rudak
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw 00-716, Poland
| | - H Rueda Ricarte
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - E Ruiz-Velasco
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - V Sahakian
- Yerevan Physics Institute, Yerevan 375036, Armenia
| | - H Salzmann
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - A Santangelo
- Institut für Astronomie und Astrophysik, Universität Tübingen, Tübingen D-72076, Germany
| | - M Sasaki
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - J Schäfer
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - F Schüssler
- Institute for Research on the Fundamental Laws of the Universe, Commissariat à l'énergie atomique et aux énergies alternatives, Université Paris-Saclay, Gif-sur-Yvette F-91191, France
| | - U Schwanke
- Institut für Physik, Humboldt-Universität zu Berlin, Berlin D-12489, Germany
| | - J N S Shapopi
- Department of Physics, University of Namibia, Windhoek 10005, Namibia
| | - H Sol
- Laboratoire Univers et Théories, Observatoire de Paris, Université Paris Sciences et Lettres, CNRS, Université de Paris, Meudon 92190, France
| | - A Specovius
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - S Spencer
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - L Stawarz
- Obserwatorium Astronomiczne, Uniwersytet Jagielloński, Kraków 30-244, Poland
| | - R Steenkamp
- Department of Physics, University of Namibia, Windhoek 10005, Namibia
| | - S Steinmassl
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - C Steppa
- Institut für Physik und Astronomie, Universität Potsdam, Potsdam 14476, Germany
| | - K Streil
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - I Sushch
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - H Suzuki
- Department of Physics, Konan University, Higashinada-ku Kobe 658-8501, Japan, Japan
| | - T Takahashi
- Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa Chiba 277-8583, Japan
| | - T Tanaka
- Department of Physics, Konan University, Higashinada-ku Kobe 658-8501, Japan, Japan
| | - A M Taylor
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - R Terrier
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - M Tsirou
- Deutsches Elektronen-Synchrotron, Zeuthen D-15738, Germany
| | - N Tsuji
- The Institute of Physical and Chemical Research (RIKEN), Wako Saitama 351-0198, Japan
| | - T Unbehaun
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - C van Eldik
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - M Vecchi
- Kapteyn Astronomical Institute, University of Groningen, Groningen 9747 AD, Netherlands
| | - J Veh
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - C Venter
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - J Vink
- Gravitation and Astroparticle Physics Amsterdam, Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam 1098 XH, Netherlands
| | - T Wach
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - S J Wagner
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
| | - F Werner
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - R White
- Max-Planck-Institut für Kernphysik, Heidelberg D-69117, Germany
| | - A Wierzcholska
- Instytut Fizyki J[Formula: see text]drowej, Polska Akademia Nauk, Kraków 31-342, Poland
| | - Yu Wun Wong
- Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen D-91058, Germany
| | - M Zacharias
- Landessternwarte, Universität Heidelberg, Heidelberg D-69117, Germany
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
| | - D Zargaryan
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
| | - A A Zdziarski
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw 00-716, Poland
| | - A Zech
- Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland
- Kapteyn Astronomical Institute, University of Groningen, Groningen 9747 AD, Netherlands
| | - S Zouari
- Laboratoire Astroparticule et Cosmologie, Université de Paris, Centre national de la recherche scientifique, Paris F-75013, France
| | - N Żywucka
- Centre for Space Research, North-West University, Potchefstroom 2520, South Africa
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Kundu A, Kuila T, Murmu NC, Samanta P, Das S. Metal-organic framework-derived advanced oxygen electrocatalysts as air-cathodes for Zn-air batteries: recent trends and future perspectives. Mater Horiz 2023; 10:745-787. [PMID: 36594186 DOI: 10.1039/d2mh01067d] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Electrochemical energy storage devices with stable performance, high power output, and energy density are urgently needed to meet the global energy demand. Among the different electrochemical energy storage devices, batteries have become the most promising energy technologies and ranked as a highly investigated research subject. Recently, metal-air batteries especially Zn-air batteries (ZABs) have attracted enormous scientific interest in the electrochemical community due to their ease of operation, sustainability, environmental friendliness, and high efficiency. The oxygen electrocatalytic reactions [oxygen reduction reaction (ORR) and oxygen evolution reaction (OER)] are the two fundamental reactions for the development of ZABs. Noble metal-based electrocatalysts are widely considered as the benchmark for oxygen electrocatalysis, but their practical application in rechargeable ZAB is hindered due to several shortcomings. Thus, to replace noble metal-based catalysts, a wide range of transition-metal-based materials and heteroatom-doped metal-free carbon materials has been extensively investigated as oxygen electrocatalysts for ZABs. Recently, metal-organic frameworks (MOFs) with unique structural flexibility and uniformly dispersed active sites have become attractive precursors for the synthesis of a large variety of advanced functional materials. Herein, we summarize the recent progress of MOF-derived oxygen electrocatalysts (MOF-derived carbon nanomaterials, MOF-derived alloys/nanoparticles, and MOF-derived single-atom electrocatalysts) for ZABs. Specifically, we highlight MOF-derived single-atom electrocatalysts owing to the wide exploration of these emerging materials in electrocatalysis. The influence of the active sites, structural/compositional design, and porosity of MOF-derived advanced materials on the oxygen electrocatalytic performances is also discussed. Finally, the existing challenges and prospects of MOF-derived electrocatalysts in ZABs are briefly highlighted.
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Affiliation(s)
- Aniruddha Kundu
- Surface Engineering and Tribology Division, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur-713209, West Bengal, India.
| | - Tapas Kuila
- Surface Engineering and Tribology Division, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur-713209, West Bengal, India.
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Postal Staff College Area, Sector 19, Kamla Nehru Nagar, Ghaziabad-201002, Uttar Pradesh, India
| | - Naresh Chandra Murmu
- Surface Engineering and Tribology Division, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur-713209, West Bengal, India.
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Postal Staff College Area, Sector 19, Kamla Nehru Nagar, Ghaziabad-201002, Uttar Pradesh, India
| | - Prakas Samanta
- Surface Engineering and Tribology Division, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur-713209, West Bengal, India.
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Postal Staff College Area, Sector 19, Kamla Nehru Nagar, Ghaziabad-201002, Uttar Pradesh, India
| | - Srijib Das
- Surface Engineering and Tribology Division, Council of Scientific and Industrial Research Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur-713209, West Bengal, India.
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3
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Gupta Y, Malik N, Goswami S, Arora M, Kundu A, Gupta S, Kapoor M, Suri V, Suri A, Chattopadhyay P, Sinha S, Chosdol K. 4P FAT1: A novel modulator of autophagy in human glioblastoma. ESMO Open 2023. [DOI: 10.1016/j.esmoop.2023.101016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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4
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Desai M, Kundu A, Hageman M, Lou H, Boisvert D. Monoclonal antibody and protein therapeutic formulations for subcutaneous delivery: high-concentration, low-volume vs. low-concentration, high-volume. MAbs 2023; 15:2285277. [PMID: 38013454 DOI: 10.1080/19420862.2023.2285277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 11/15/2023] [Indexed: 11/29/2023] Open
Abstract
Biologic drugs are used to treat a variety of cancers and chronic diseases. While most of these treatments are administered intravenously by trained healthcare professionals, a noticeable trend has emerged favoring subcutaneous (SC) administration. SC administration of biologics poses several challenges. Biologic drugs often require higher doses for optimal efficacy, surpassing the low volume capacity of traditional SC delivery methods like autoinjectors. Consequently, high concentrations of active ingredients are needed, creating time-consuming formulation obstacles. Alternatives to traditional SC delivery systems are therefore needed to support higher-volume biologic formulations and to reduce development time and other risks associated with high-concentration biologic formulations. Here, we outline key considerations for SC biologic drug formulations and delivery and explore a paradigm shift: the flexibility afforded by low-to-moderate-concentration drugs in high-volume formulations as an alternative to the traditionally difficult approach of high-concentration, low-volume SC formulation delivery.
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Affiliation(s)
- M Desai
- Medical Affairs, Enable Injections, Inc, Cincinnati, OH, USA
| | - A Kundu
- Manufacturing Sciences, Takeda Pharmaceuticals, Brooklyn Park, MN, USA
| | - M Hageman
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS, USA
| | - H Lou
- Biopharmaceutical Innovation & Optimization Center, The University of Kansas, Lawrence, KS, USA
| | - D Boisvert
- Independent Chemistry Manufacturing & Controls (CMC) Consultant, El Cerrito, CA, USA
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Santra S, Kethepalli J, Agarwal S, Dhar A, Kulkarni M, Kundu A. Gap Statistics for Confined Particles with Power-Law Interactions. Phys Rev Lett 2022; 128:170603. [PMID: 35570430 DOI: 10.1103/physrevlett.128.170603] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 03/25/2022] [Indexed: 06/15/2023]
Abstract
We consider the N particle classical Riesz gas confined in a one-dimensional external harmonic potential with power-law interaction of the form 1/r^{k}, where r is the separation between particles. As special limits it contains several systems such as Dyson's log-gas (k→0^{+}), the Calogero-Moser model (k=2), the 1D one-component plasma (k=-1), and the hard-rod gas (k→∞). Despite its growing importance, only large-N field theory and average density profile are known for general k. In this Letter, we study the fluctuations in the system by looking at the statistics of the gap between successive particles. This quantity is analogous to the well-known level-spacing statistics which is ubiquitous in several branches of physics. We show that the variance goes as N^{-b_{k}} and we find the k dependence of b_{k} via direct Monte Carlo simulations. We provide supporting arguments based on microscopic Hessian calculation and a quadratic field theory approach. We compute the gap distribution and study its system size scaling. Except in the range -1<k<0, we find scaling for all k>-2 with both Gaussian and non-Gaussian scaling forms.
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Affiliation(s)
- S Santra
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
| | - J Kethepalli
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
| | - S Agarwal
- Department of Physics, University of Colorado, Boulder, Colorado 80309, USA
| | - A Dhar
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
| | - M Kulkarni
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
| | - A Kundu
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru - 560089, India
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Aldrugh S, Kakouros N, Kundu A, Qureshi W. National prevalence and outcomes of coronary chronic total occlusion revascularization in patients with congestive heart failure. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
There is limited data on the prevalence and outcomes of coronary artery chronic total occlusion (CTO) revascularization in patients with congestive heart failure.
Purpose
Our goal is to study the prevalence and outcomes of CTO revascularization in terms of in-hospital mortality, re-admission rate, and complications in patients stratified by their heart failure status.
Methods
Patients with CTO who underwent percutaneous coronary intervention (PCI) were included for the years 2010 - 2018 from the national readmission database. We compared the national trends, prevalence and outcomes of CTO revascularization in patients with no heart failure, heart failure with preserved ejection fraction (HFpEF), and heart failure with reduced ejection fraction (HFrEF) using one-way ANOVA and logistic regression.
Results
A total of 166,244 (69±11 years, 26% women) patients with coronary CTO who underwent PCI were identified. Of these, 131,664 (79%) patients had no clinical diagnosis of HF, while 26,612 (16%) patients had HFpEF, and 7,968 (5%) patients had HFrEF. Majority of patients with HFpEF and HFrEF had a moderate to high Elixhauser comorbidity score, while those with no HF had mostly low to moderate score (p<0.001). We observed a steady decrease in annual CTO revascularization from a total of 24,708 in 2010 to 13,505 in 2018. However, the percentage of CTO revascularization in patients with HFrEF has increased during this period from 2% in 2010 to 8% in 2018. Interestingly, patients with HFpEF had higher rates of cardiac arrest (Odds Ratio (OR) 2.2; 95% Confidence Interval (CI) 1.8–2.7, p<0.001), ventricular tachycardia/fibrillation (OR 3.7; 95% CI 3.4–4.0, p<0.001), use of mechanical support (OR 5.5; 95% CI 4.9–6.2, p<0.001), and death during admission (OR 2.2; 95% CI 1.8–2.7, p<0.001) than those with no HF and with HFrEF. Similarly, patients with HFpEF had higher rates of intensive care unit admission (9%), than those with HFrEF (5%), and no HF (2%) (p<0.001). Readmission rates were similar across all three groups (0.5–0.7%, p=0.06). The median cost of hospitalization was significantly higher in the HFpEF group compared to the other groups ($98,366, p<0.001).
Conclusion
In this cohort of patients, we observed an overall annual decline in CTO revascularization over the 8-year study period. Despite this decline, we observed an increase in CTO revascularization in patient with HFrEF. Interestingly, patients with HFpEF had elevated in hospital mortality and higher rates of cardiac arrest, ventricular arrhythmias, mechanical circulatory support, and admission to the cardiac care unit than those with no HF, or those with HFrEF. Despite their persevered ejection fraction, our findings suggest that CTO revascularization in with patients with HFpEF carry a significant risk, thus risks versus benefits in this group of patients should be weighed considerably before attempting revascularization.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Aldrugh
- University of Massachusetts, Cardiovascular Medicine, Worcester, United States of America
| | - N Kakouros
- University of Massachusetts, Cardiovascular Medicine, Worcester, United States of America
| | - A Kundu
- University of Massachusetts, Cardiovascular Medicine, Worcester, United States of America
| | - W Qureshi
- University of Massachusetts, Cardiovascular Medicine, Worcester, United States of America
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Kundu A, Mallick S, Ghora S, Raj CR. Advanced Oxygen Electrocatalyst for Air-Breathing Electrode in Zn-Air Batteries. ACS Appl Mater Interfaces 2021; 13:40172-40199. [PMID: 34424683 DOI: 10.1021/acsami.1c08462] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The electrochemical reduction of oxygen to water and the evolution of oxygen from water are two important electrode reactions extensively studied for the development of electrochemical energy conversion and storage technologies based on oxygen electrocatalysis. The development of an inexpensive, highly active, and durable nonprecious-metal-based oxygen electrocatalyst is indispensable for emerging energy technologies, including anion exchange membrane fuel cells, metal-air batteries (MABs), water electrolyzers, etc. The activity of an oxygen electrocatalyst largely decides the overall energy storage performance of these devices. Although the catalytic activities of Pt and Ru/Ir-based catalysts toward an oxygen reduction reaction (ORR) and an oxygen evolution reaction (OER) are known, the high cost and lack of durability limit their extensive use for practical applications. This review article highlights the oxygen electrocatalytic activity of the emerging non-Pt and non-Ru/Ir oxygen electrocatalysts including transition-metal-based random alloys, intermetallics, metal-coordinated nitrogen-doped carbon (M-N-C), and transition metal phosphides, nitrides, etc., for the development of an air-breathing electrode for aqueous primary and secondary zinc-air batteries (ZABs). Rational surface and chemical engineering of these electrocatalysts is required to achieve the desired oxygen electrocatalytic activity. The surface engineering increases the number of active sites, whereas the chemical engineering enhances the intrinsic activity of the catalyst. The encapsulation or integration of the active catalyst with undoped or heteroatom-doped carbon nanostructures affords an enhanced durability to the active catalyst. In many cases, the synergistic effect between the heteroatom-doped carbon matrix and the active catalyst plays an important role in controlling the catalytic activity. The ORR activity of these catalysts is evaluated in terms of onset potential, number of electrons transferred, limiting current density, and durability. The bifunctional oxygen electrocatalytic activity and ZAB performance, on the other hand, are measured in terms of potential gap between the ORR and OER, ΔE = Ej10OER - E1/2ORR, specific capacity, peak power density, open circuit voltage, voltaic efficiency, and charge-discharge cycling stability. The nonprecious metal electrocatalyst-based ZABs are very promising and they deliver high power density, specific capacity, and round-trip efficiency. The active site for oxygen electrocatalysis and challenges associated with carbon support is briefly addressed. Despite the considerable progress made with the emerging electrocatalysts in recent years, several issues are yet to be addressed to achieve the commercial potential of rechargeable ZAB for practical applications.
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Affiliation(s)
- Aniruddha Kundu
- Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Sourav Mallick
- Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Santanu Ghora
- Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - C Retna Raj
- Functional Materials and Electrochemistry Lab, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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Mukherjee C, Kundu A, Dey R, Banerjee A, Sengupta K. Active microrheology using pulsed optical tweezers to probe viscoelasticity of lamin A. Soft Matter 2021; 17:6787-6796. [PMID: 34219136 DOI: 10.1039/d1sm00293g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lamins are nucleoskeletal proteins of mammalian cells that stabilize the structure and maintain the rigidity of the nucleus. These type V intermediate filament proteins which are predominantly of A and B types provide necessary tensile strength to the nucleus. Single amino acid missense mutations occurring all over the lamin A protein form a cluster of human diseases termed as laminopathies, most of which principally affect the muscle and cardiac tissues responsible for load bearing functionalities of the body. One such mutation is A350P which causes dilated cardiomyopathy in patients. It is postulated that a change from alanine to proline in the α-helical coiled-coil forming 2B rod domain of the protein might severely disrupt the propensity of the filaments to polymerise into functional higher order structures required to form a fully functional lamina with its characteristic elasticity. In this study, we have elucidated for the very first time, the application of active microrheology employing oscillating optical tweezers to investigate any alterations in the viscoelastic parameters of the mutant protein meshwork in vitro, which might translate into possible changes in nuclear plasticity. We confirmed our findings from this robust yet fast method by imaging both the wild type and mutant lamin A networks using a super resolution microscope, and observed changes in the mesh size which corroborate our measured changes in the viscoelastic parameters of the lamins. This method could thus be extended to conduct microrheological measurements on any intermediate filament protein thus bearing significant implications in laminopathies and other diseases associated with intermediate filaments.
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Affiliation(s)
- C Mukherjee
- Biophysics & Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064, West Bengal, India. and Homi Bhabha National Institute, Anushaktinagar, Mumbai-400076, Maharashtra, India
| | - A Kundu
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India.
| | - R Dey
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India.
| | - A Banerjee
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal, India.
| | - K Sengupta
- Biophysics & Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064, West Bengal, India. and Homi Bhabha National Institute, Anushaktinagar, Mumbai-400076, Maharashtra, India
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Kundu A, Samanta A, Raj CR. Hierarchical Hollow MOF-Derived Bamboo-like N-doped Carbon Nanotube-Encapsulated Co 0.25Ni 0.75 Alloy: An Efficient Bifunctional Oxygen Electrocatalyst for Zinc-Air Battery. ACS Appl Mater Interfaces 2021; 13:30486-30496. [PMID: 34157833 DOI: 10.1021/acsami.1c01875] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The synthesis of nonprecious electrocatalysts for oxygen electrocatalysis is of considerable interest for the development of electrochemical energy devices. Herein, we demonstrate a facile approach for the synthesis of bamboo-like nitrogen-doped carbon nanotube-encapsulated Co0.25Ni0.75 alloy electrocatalyst (Co0.25Ni0.75@NCNT) and its bifunctional oxygen electrocatalytic performance toward oxygen reduction and oxygen evolution reactions. The Co0.25Ni0.75 alloy wrapped with NCNT is obtained by a one-step carbothermal reduction approach using dicyandiamide and NiCo-MOF precursors. Dicyandiamide acts as a nitrogen source, and the in situ generated Co0.25Ni0.75 alloy nanoparticles catalyze the growth of bamboo-like NCNTs. The hollow NiCo-MOF plays a sacrificial role in providing a suitable environment for the controlled growth of Co0.25Ni0.75 alloy and NCNT. Co0.25Ni0.75@NCNT efficiently catalyzes both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) at a favorable overpotential. It shows a low potential gap (ΔE) of ∼0.8 V between the two reactions, and it qualifies for the development of air cathode in metal-air batteries. The enhanced bifunctional activity and excellent durability stem from the chemical composition and the synergistic effect between Co0.25Ni0.75 alloy and encapsulating NCNT. The original phase and morphology of the catalyst is preserved after an extensive durability test. Aqueous rechargeable Zn-air battery (ZAB) is fabricated using a Co0.25Ni0.75@NCNT-based air cathode. The battery has high open-circuit voltage (1.53 V) and a maximum peak power density of 167 mW cm-2 with only 1.6% loss in the voltaic efficiency after 36 h charge-discharge cycles. As a proof-of-concept demonstration, the as-fabricated ZAB is successfully used for the electrochemical water splitting in alkaline solution.
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Affiliation(s)
- Aniruddha Kundu
- Functional Materials and Electrochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Arpan Samanta
- Functional Materials and Electrochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - C Retna Raj
- Functional Materials and Electrochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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De AK, Sawhney S, Bhattacharya D, Sujatha T, Sunder J, Ponraj P, Ravi SK, Mondal S, Malakar D, Kundu A. Origin, genetic diversity and evolution of Andaman local duck, a native duck germplasm of an insular region of India. PLoS One 2021; 16:e0245138. [PMID: 33561119 PMCID: PMC7872295 DOI: 10.1371/journal.pone.0245138] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 12/23/2020] [Indexed: 11/29/2022] Open
Abstract
Domestic ducks are of paramount importance as a cheap source of protein in rural India. Andaman local duck (ALD) is an indigenous avian genetic resource of Andaman and Nicobar islands (ANI) and is mainly distributed in Middle and Northern parts of these islands. Negligence has brought this breed on the edge of extinction necessitating immediate conservation efforts. Here, we report the genetic diversity, population structure and matrilineal genetic root of ALD. Partial mtDNA D-loop sequences were analyzed in 71 ALD samples and analysis revealed 19 polymorphic sites and 13 haplotypes. Estimated haplotype (Hd ± SD) and nucleotide diversity (π ± SD) were 0.881 ± 0.017 and 0.00897 ± 0.00078 respectively. The high genetic diversity of ALD indicates introgression of genetic material from other local duck breeds. In addition, it can be postulated that ALD bearing high genetic diversity has strong ability to adapt to environmental changes and can withstand impending climate change. Phylogenetic and network analysis indicate that ALD falls under Eurasian clade of mallard and ALD forms three clusters; one cluster is phylogenetically close to Southeast Asian countries, one close to Southern part of mainland India and the third one forms an independent cluster. Therefore, ALD might have migrated either from Southeast Asian countries which enjoy a close cultural bondage with ANI from time immemorial or from Southern part of India. The independent cluster may have evolved locally in these islands and natural selection pressure imposed by environmental conditions might be the driving force for evaluation of these duck haplotypes; which mimics Darwin’s theory of natural selection. The results of the study will be beneficial for formulating future breeding programme and conservation strategy towards sustainable development of the duck breed.
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Affiliation(s)
- Arun Kumar De
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
- * E-mail:
| | - Sneha Sawhney
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
| | - Debasis Bhattacharya
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
| | - T. Sujatha
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
| | - Jai Sunder
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
| | - Perumal Ponraj
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
| | - S. K. Ravi
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
| | - Samiran Mondal
- Department of Veterinary Pathology, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Dhruba Malakar
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana, India
| | - A. Kundu
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
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11
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Alyethodi RR, Sirohi AS, Karthik S, Tyagi S, Perumal P, Singh U, Sharma A, Kundu A. Role of seminal MDA, ROS, and antioxidants in cryopreservation and their kinetics under the influence of ejaculatory abstinence in bovine semen. Cryobiology 2021; 98:187-193. [PMID: 33476643 DOI: 10.1016/j.cryobiol.2020.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 10/30/2020] [Accepted: 11/03/2020] [Indexed: 11/30/2022]
Abstract
Despite many cryopreservation techniques in bovine semen, various stressors' detrimental effects remain a significant issue. The present study targeted to assess the role of semen quality parameters, sperm function tests, lipid peroxidation, reactive oxygen species (ROS), and different antioxidants in the cryopreservation of bovine semen. Further, the kinetics of lipid peroxidation, ROS, and antioxidants on repeated semen collection under short ejaculatory abstinence were studied. We designed a comparative study where bulls were grouped into good and low freezable semen groups (Freeze-groups) based on their post-thaw motility. All the bulls included had similar initial motility and qualified minimum standards for initial semen parameters viz. semen volume and sperm concentration. The present study detected a higher lipid peroxidation and ROS viz. superoxide anions (•O2-) and a lower total antioxidant capacity (TAC) in the low freeze-group compared to the good freeze-group. The ROS and antioxidants showed unique kinetics on repeated semen collection at short intervals, and no significant change was detected in semen volume, sperm motility, and sperm concentration. This study detected higher head abnormalities and poor acrosome integrity in the low freeze-groups. The present study results indicated that the sperm head might be the most vulnerable part of the sperm to cryopreservation stress. The present study finds significantly higher lipid peroxidation and ROS levels and reduced antioxidant capacity as the primary reasons for low cryopreservability. Further, repeated semen collection with a shorter or lack of abstinence does not impose any significant change in the semen volume and sperm concentration; moreover, it could be beneficial for higher antioxidant levels and lower lipid peroxidation levels. As seminal plasma has both inhibitory and stimulatory roles in sperm function and cryopreservation, identifying the critical role players of seminal plasma and identifying sperm related changes in cryopreservation could predict the cryopreservability potential of semen.
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Affiliation(s)
- Rafeeque R Alyethodi
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, A&N, India.
| | - Ajayvir Singh Sirohi
- Semen Freezing Laboratory, ICAR-Central Institute for Research on Cattle, Meerut, UP, India
| | - S Karthik
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, A&N, India
| | - S Tyagi
- Semen Freezing Laboratory, ICAR-Central Institute for Research on Cattle, Meerut, UP, India
| | - P Perumal
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, A&N, India
| | - Umesh Singh
- Animal Genetics & Breeding Division, ICAR-Central Institute for Research on Cattle, Meerut, UP, India
| | - Ankur Sharma
- Semen Freezing Laboratory, ICAR-Central Institute for Research on Cattle, Meerut, UP, India
| | - A Kundu
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, A&N, India
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12
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Das B, Palit R, Donthi R, Kundu A, Laskar SR, Dey P, Negi D, Babra FS, Jadhav S, Naidu BS, Vazhappilly AT. Development of a position-sensitive fast scintillator (LaBr 3(Ce)) detector setup for gamma-ray imaging application. EPJ Web Conf 2021. [DOI: 10.1051/epjconf/202125311005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We have characterized a Cerium doped Lanthanum Bromide (LaBr3(Ce) ) crystal coupled with the position-sensitive photo-multiplier system for the gamma-ray imaging application. One can use this detector set-up for the scanning of high purity germanium detectors for pulse shape analysis in gamma-ray spectroscopy experiments and the image formation of an object by Compton back-scattering . The sensor has been tested for energy, timing and position information of the gamma-rays interacting within the detector crystal. The GEANT4 simulation results are consistent with the experimental results. We have reconstructed the image of irradiation spots in different positions throughout the detector crystal. Position resolution is found to be around 3.5 mm with the 2 mm collimated gamma-rays. The 2-d image of hexagonal Bismuth Germanate (BGO) crystal and a cylindrical LaBr3(Ce) crystal have been reconstructed in coincidence technique. The performance of the detector for imaging application has been investigated by coincidence technique in GEANT4 simulation and compared with the experimental data. We have reconstructed the 2-d images of objects with various geometrical shapes by Compton back-scattered events of the gamma-rays. This position-sensitive detector can be used as an absorber of a Compton camera for the image reconstruction of an extended radioactive source. One can also use this kind of set-up as in radiation imaging and many other applications where the energy and source position of the gamma-ray is the main interest.
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14
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Kundu A, Robby AI, Shit A, Jo HJ, Park SY. Construction of FeCo 2O 4@N-Doped Carbon Dots Nanoflowers as Binder Free Electrode for Reduction and Oxidation of Water. Materials (Basel) 2020; 13:ma13143119. [PMID: 32668661 PMCID: PMC7411927 DOI: 10.3390/ma13143119] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/30/2020] [Accepted: 07/09/2020] [Indexed: 12/30/2022]
Abstract
Electrochemical water splitting is known as a potential approach for sustainable energy conversion; it produces H2 fuel by utilizing transition metal-based catalysts. We report a facile synthesis of FeCo2O4@carbon dots (CDs) nanoflowers supported on nickel foam through a hydrothermal technique in the absence of organic solvents and an inert environment. The synthesized material with a judicious choice of CDs shows superior performance in hydrogen and oxygen evolution reactions (HER and OER) compared to the FeCo2O4 electrode alone in alkaline media. For HER, the overpotential of 205 mV was able to produce current densities of up to 10 mA cm−2, whereas an overpotential of 393 mV was needed to obtain a current density of up to 50 mA cm−2 for OER. The synergistic effect between CDs and FeCo2O4 accounts for the excellent electrocatalytic activity, since CDs offer exposed active sites and subsequently promote the electrochemical reaction by enhancing the electron transfer processes. Hence, this procedure offers an effective approach for constructing metal oxide-integrated CDs as a catalytic support system to improve the performance of electrochemical water splitting.
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Affiliation(s)
- Aniruddha Kundu
- Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju 380-702, Korea; (A.K.); (A.S.); (H.J.J.)
| | - Akhmad Irhas Robby
- Department of Green Bio Engineering, Korea National University of Transportation, Chungju 380-702, Korea;
| | - Arnab Shit
- Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju 380-702, Korea; (A.K.); (A.S.); (H.J.J.)
| | - Hyeong Jun Jo
- Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju 380-702, Korea; (A.K.); (A.S.); (H.J.J.)
| | - Sung Young Park
- Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju 380-702, Korea; (A.K.); (A.S.); (H.J.J.)
- Department of Green Bio Engineering, Korea National University of Transportation, Chungju 380-702, Korea;
- Department of IT Convergence, Korea National University of Transportation, Chungju 380-702, Korea
- Correspondence:
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Kundu A, Ryplida B, Park SY. Carbon Dots Integrated NiCo
2
O
4
Hierarchical Nanoneedle Arrays Supported on Ni Foam as Efficient and Stable Electrode for Hydrogen and Oxygen Evolution Reactions. ELECTROANAL 2020. [DOI: 10.1002/elan.202060110] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Aniruddha Kundu
- Department of Chemical and Biological Engineering Korea National University of Transportation Chungju 380-702, Republic of Korea
| | - Benny Ryplida
- Department of Green Bio Engineering Korea National University of Transportation Chungju 380-702, Republic of Korea
| | - Sung Young Park
- Department of Chemical and Biological Engineering Korea National University of Transportation Chungju 380-702, Republic of Korea
- Department of Green Bio Engineering Korea National University of Transportation Chungju 380-702, Republic of Korea
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Alyethodi RR, Karthik S, Muniswamy K, Ravi SK, Perumal P, Bhattacharya D, Bala PA, De AK, Sujatha T, Sunder J, Kundu A. Assessment of Protein Profiles of RNAlater Stored and Fresh PBMC Cells Using Different Protein Extraction Buffers. Protein J 2020; 39:291-300. [DOI: 10.1007/s10930-020-09888-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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De AK, George Z, Mondal S, Perumal P, Muniswamy K, Kundu A, Sunder J, Muthiyan R, Zamir Ahmed SK, Chakraborty G, Sujatha T, Bhattacharya D. Tracing the genetic root of Trinket cattle: an endangered cattle population of a small isolated island of Nicobar group of islands. J Genet 2020; 99:16. [PMID: 32366739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Trinket cattle are the inhabitant of a small island called Trinket, which is one of the picturesque islands of Andaman. This herd is thought to be of Danish leftover during their dynasty in Nicobar archipelago. When the island was abandoned by foreign invaders, indigenes utilized the animals for the purpose of meat. As a result, the cattle became semi-feral in nature. After the Great Sumatra earthquake and tsunami of Indian Ocean in 2004, Trinket island was left abandoned by indigenes and the cattle became totally feral in nature. To trace the genetic root of the cattle, this study has been undertaken based on the sequence information of the mitochondrial D-loop and cytochrome b gene. The genomic DNA was extracted from the blood samples of the Trinket cattle and was used for amplification of mitochondrial markers, and the sequence information was generated by Sanger sequencing. The analysis of sequence information revealed that the Trinket cattle belongs to Bos indicus (I) haplotype, sub-haplotype I2. The presence of I2 sub-haplotype in Trinket cattle may be due to the expansion of this I2 haplotype towards Southeast Asian countries. This is a novel input for the formulation of breeding strategy towards conservation of eco-friendly sustainable livestock in the isolated island ecosystem.
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Affiliation(s)
- Arun Kumar De
- ICAR-Central Island Agricultural Research Institute, Port Blair 744 101, India.
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18
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Kumar De A, Ponraj P, Malakar D, Muthiyan R, Kundu A, Bhattacharya D. Complete mitogenome sequencing of Andaman buffalo: an endangered germplasm of Andaman and Nicobar Islands, India. J Genet 2019; 98:97. [PMID: 31767814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Andaman buffalo is an indigenous buffalo of Andaman and Nicobar Islands, India. Over the last decade, it has witnessed a rapid decline in population, necessitating its immediate characterization and conservation. The present study reports the complete mitogenome profile of Andaman buffalo which is 16,359 bp in length and comprised of 37 genes, including 13 protein-coding genes (PCGs), 22 transfer RNAs and two ribosomal RNAs. In addition, one A + T rich region (D-loop) was also present. A biasness towards A and T base was observed in all the genes. All the PCGs except ND6 were present on heavy strand. Start codons for all the 13 PCGs were ATN codon and abbreviated/truncated stop codons were observed in ND1, ND2, COX3, ND3 and ND4. The phylogenetic analysis revealed that the Andaman buffalo is closely related to buffalo from India and China. The results from this study will help in sketching the conservation plan of the threatened breed.
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Affiliation(s)
- Arun Kumar De
- Animal Science Division, ICAR-Central Island Agricultural Research Institute, Port Blair 744 101, India.
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19
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Kumar De A, Ponraj P, Malakar D, Muthiyan R, Kundu A, Bhattacharya D. Complete mitogenome sequencing of Andaman buffalo: an endangered germplasm of Andaman and Nicobar Islands, India. J Genet 2019. [DOI: 10.1007/s12041-019-1140-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Agarwal S, Dhar A, Kulkarni M, Kundu A, Majumdar SN, Mukamel D, Schehr G. Harmonically Confined Particles with Long-Range Repulsive Interactions. Phys Rev Lett 2019; 123:100603. [PMID: 31573302 DOI: 10.1103/physrevlett.123.100603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Indexed: 06/10/2023]
Abstract
We study an interacting system of N classical particles on a line at thermal equilibrium. The particles are confined by a harmonic trap and repel each other via pairwise interaction potential that behaves as a power law ∝∑[under i≠j][over N]|x_{i}-x_{j}|^{-k} (with k>-2) of their mutual distance. This is a generalization of the well-known cases of the one-component plasma (k=-1), Dyson's log gas (k→0^{+}), and the Calogero-Moser model (k=2). Because of the competition between harmonic confinement and pairwise repulsion, the particles spread over a finite region of space for all k>-2. We compute exactly the average density profile for large N for all k>-2 and show that while it is independent of temperature for sufficiently low temperature, it has a rich and nontrivial dependence on k with distinct behavior for -2<k<1, k>1 and k=1.
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Affiliation(s)
- S Agarwal
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru 560089, India
- Birla Institute of Technology and Science, Pilani 333031, India
| | - A Dhar
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru 560089, India
| | - M Kulkarni
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru 560089, India
| | - A Kundu
- International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bengaluru 560089, India
| | - S N Majumdar
- LPTMS, CNRS, Univ. Paris-Sud, Universite Paris-Saclay, 91405 Orsay, France
| | - D Mukamel
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - G Schehr
- LPTMS, CNRS, Univ. Paris-Sud, Universite Paris-Saclay, 91405 Orsay, France
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De AK, Ponraj P, Kundu MS, Muthiyan R, Muniswamy K, Kundu A, Malakar D, Sunder J, George Z, Bhattacharya D. Mitochondrial landscape of indigenous pig germplasm of Andaman and Nicobar Islands. Mitochondrial DNA B Resour 2019; 4:2808-2810. [PMID: 33365738 PMCID: PMC7707010 DOI: 10.1080/23802359.2019.1660240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Nicobari pig and Andaman Desi pig are indigenous pig germplasm of Andaman and Nicobar islands, India. Over the last two decades, the pig breeds witnessed a rapid decline in population, necessitating immediate characterization and conservation. The present study depicts the complete mitochondrial genome sequence of Nicobari pig and Andaman Desi pig. The mitogenomes of both the breeds encode 37 genes including 13 protein coding genes, 22 tRNAs, and two ribosomal RNA genes. In addition, a control region (D-loop) was also present. Phylogenetic analysis showed that Nicobari is phylogenetically close to Banna mini and Breed I pig, whereas Andaman Desi pig is close to Mong cai and Jinhua pig breeds. The results of the study will be helpful for formulating of conservation strategy of the native swine breeds.
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Affiliation(s)
- Arun Kumar De
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | - Perumal Ponraj
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | - M S Kundu
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | | | - K Muniswamy
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | - A Kundu
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | | | - Jai Sunder
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | - Zachariah George
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
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Kundu A, Vadassery J. Chlorogenic acid-mediated chemical defence of plants against insect herbivores. Plant Biol (Stuttg) 2019; 21:185-189. [PMID: 30521134 DOI: 10.1111/plb.12947] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 11/28/2018] [Indexed: 05/18/2023]
Abstract
Chlorogenic acid is one of the most abundant beneficial polyphenols in plants and is well known as a nutritional antioxidant in plant-based foods. Apart from its dietary antioxidant activity, it has been proved to be an efficient defence molecule against a broad range of insect herbivores. In the last two decades, several reports have shown the effectiveness of chlorogenic acid in insect growth deterrence. The pathway for chlorogenic acid biosynthesis in plants was previously elucidated, and metabolic engineering of the principal pathway showed high chlorogenic acid production in tomato plants. Herbivore-mediated induction of chlorogenic acid biosynthesis was also demonstrated both at metabolite and transcript level, although herbivore-mediated molecular regulation of chlorogenic acid biosynthesis is not yet fully elucidated. In this communication, we present our views on the efficacy of chlorogenic acid as an anti-herbivore defence molecule in plants and also discuss its future outlook.
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Affiliation(s)
- A Kundu
- National Institute of Plant Genome Research (NIPGR), New Delhi, India
| | - J Vadassery
- National Institute of Plant Genome Research (NIPGR), New Delhi, India
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De AK, Muthiyan R, George Z, Ponraj P, Malakar D, Kundu A, Sunder J, Bhattacharya D. Complete mitochondrial genome of Trinket cattle, a Danish colonial leftover. Mitochondrial DNA Part B 2019. [DOI: 10.1080/23802359.2019.1618208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Arun Kumar De
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | | | - Zachariah George
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | - Perumal Ponraj
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | | | - A. Kundu
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
| | - Jai Sunder
- ICAR-Central Island Agricultural Research Institute, Port Blair, India
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Kundu A, Das S, Basu S, Kobayashi Y, Kobayashi Y, Koyama H, Ganesan M. GhSTOP1, a C2H2 type zinc finger transcription factor is essential for aluminum and proton stress tolerance and lateral root initiation in cotton. Plant Biol (Stuttg) 2019; 21:35-44. [PMID: 30098101 DOI: 10.1111/plb.12895] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/04/2018] [Indexed: 05/25/2023]
Abstract
Aluminum (Al) and proton (H+ ) ions are major acid soil stress factors deleteriously affecting plant root growth and crop yield. In our preliminary studies, cotton (Gossypium hirsutum L.) seedlings displayed very sensitive phenotypes to Al and H+ rhizotoxicities. Based on previous Arabidopsis results, we aimed to characterise the Al stress responsive Sensitive to Proton rhizotoxicity 1 (GhSTOP1) transcription system in cotton using RNAi-mediated down-regulation. With the help of seed embryo apex explants, we developed transgenic cotton plants overexpressing a GhSTOP1-RNAi cassette with NPTII selection. Kanamycin-tolerant T1 seedlings were further considered for Al and H+ stress tolerance studies. Down-regulation of the GhSTOP1 increased sensitivity to Al and proton rhizotoxicities, and root growth was significantly reduced in RNAi lines. The expression profile of GhALMT1 (Aluminum-activated Malate Transporter 1), GhMATE (Multidrug and Toxic Compound Extrusion), GhALS3 (Aluminium Sensitive 3) and key genes involved in the GABA shunt were down-regulated in the transgenic RNAi lines. Additionally, the lateral root initiation process was delayed and expression of GhNAC1, which is involved in lateral roots, was also suppressed in transgenic lines. Besides, overexpression of GhSTOP1 in Arabidopsis accelerated root growth and AtMATE and AtALMT1 expression under Al stress conditions. These analyses indicate that GhSTOP1 is essential for the expression of several genes which are necessary for acid soil tolerance mechanisms and lateral root initiation.
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Affiliation(s)
- A Kundu
- Department of Life Sciences, Presidency University Kolkata, West Bengal, India
| | - S Das
- Department of Life Sciences, Presidency University Kolkata, West Bengal, India
| | - S Basu
- Department of Life Sciences, Presidency University Kolkata, West Bengal, India
| | - Y Kobayashi
- Department of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Y Kobayashi
- Department of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - H Koyama
- Department of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - M Ganesan
- Department of Life Sciences, Presidency University Kolkata, West Bengal, India
- Department of Applied Biological Sciences, Gifu University, Gifu, Japan
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Kundu A, Park B, Ray C, Oh J, Jun SC. Environmentally benign and cost-effective synthesis of water soluble red light emissive gold nanoclusters: selective and ultra-sensitive detection of mercuric ions. NEW J CHEM 2019. [DOI: 10.1039/c8nj02897d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A green approach to synthesize red emissive gold nanoclusters for nano-molar detection of mercuric ions.
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Affiliation(s)
- Aniruddha Kundu
- School of Mechanical Engineering
- Yonsei University
- Seoul 120-749
- South Korea
| | - Byeongho Park
- School of Mechanical Engineering
- Yonsei University
- Seoul 120-749
- South Korea
| | - Chaiti Ray
- School of Mechanical Engineering
- Yonsei University
- Seoul 120-749
- South Korea
| | - Juyeong Oh
- School of Mechanical Engineering
- Yonsei University
- Seoul 120-749
- South Korea
| | - Seong Chan Jun
- School of Mechanical Engineering
- Yonsei University
- Seoul 120-749
- South Korea
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26
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Patrick EE, Currlin S, Kundu A, Delgado F, Fahmy A, Madler R, Maghari N, Bashirullah R, Gunduz A, Otto K. Design and assessment of stimulation parameters for a novel peripheral nerve interface. Annu Int Conf IEEE Eng Med Biol Soc 2018; 2018:5491-5494. [PMID: 30441580 DOI: 10.1109/embc.2018.8513582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Bi-directional interfaces for peripheral nerve stimulation and recording aim to improve control and acceptance of sensorized prosthetic limbs. The implantable multimodal peripheral recording and stimulation system (IMPRESS) is an intraneural interface technology supporting a high-density transverse intrafascicular multichannel electrode (hd-TIME). Herein we report on in vivo selectivity studies using a passive hd-TIME, and computational modeling towards optimal stimulation parameters for fiber recruitment.
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Delgado F, Currlin S, Kundu A, Patrick EE, Otto KJ. Effect of Asymmetric, Charge Balanced Stimuli on Elicited Compound Neural Action Potentials. Annu Int Conf IEEE Eng Med Biol Soc 2018; 2018:3370-3373. [PMID: 30441110 DOI: 10.1109/embc.2018.8513057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Whether via cuff or intrafascicular electrode, peripheral neural stimulations often rely on symmetric, charge balanced paradigms. To date, few investigations have been carried out which systematically decompose the features of a stimulus waveform. Factors such as pulse-width, amplitude, and the timing with which they are presented may have significant effects on the quality of the stimuli. This work seeks to fill this gap in knowledge and share insight into how selection of electrical stimuli may affect the resultant neural activation in peripheral nerves. In particular, we found that, although there is some variance, over the parameter range tested there was not a significant effect on neural fiber recruitment percent due to waveform selection.
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Sankar KV, Seo Y, Lee SC, Liu S, Kundu A, Ray C, Jun SC. Cobalt carbonate hydroxides as advanced battery-type materials for supercapatteries: Influence of morphology on performance. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.11.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gogoi S, Banik GC, Kundu A, Mukhopadhyay S, Mukhopadhyay D. Status of Zinc Fractions in Soils of Cooch Behar District, West Bengal, India. CURR SCI INDIA 2017. [DOI: 10.18520/cs/v113/i06/1173-1178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Liu S, Sankar KV, Kundu A, Ma M, Kwon JY, Jun SC. Honeycomb-Like Interconnected Network of Nickel Phosphide Heteronanoparticles with Superior Electrochemical Performance for Supercapacitors. ACS Appl Mater Interfaces 2017; 9:21829-21838. [PMID: 28594159 DOI: 10.1021/acsami.7b05384] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Transition-metal-based heteronanoparticles are attracting extensive attention in electrode material design for supercapacitors owing to their large surface-to-volume ratios and inherent synergies of individual components; however, they still suffer from limited interior capacity and cycling stability due to simple geometric configurations, low electrochemical activity of the surface, and poor structural integrity. Developing an elaborate architecture that endows a larger surface area, high conductivity, and mechanically robust structure is a pressing need to tackle the existing challenges of electrode materials. This work presents a supercapacitor electrode consisting of honeycomb-like biphasic Ni5P4-Ni2P (NixPy) nanosheets, which are interleaved by large quantities of nanoparticles. The optimized NixPy delivers an ultrahigh specific capacity of 1272 C g-1 at a current density of 2 A g-1, high rate capability, and stability. An asymmetric supercapacitor employing as-synthesized NixPy as the positive electrode and activated carbon as the negative electrode exhibits significantly high power and energy densities (67.2 W h kg-1 at 0.75 kW kg-1; 20.4 W h kg-1 at 15 kW kg-1). These results demonstrate that the novel nanostructured NixPy can be potentially applied in high-performance supercapacitors.
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Affiliation(s)
- Shude Liu
- School of Mechanical Engineering, Yonsei University , Seoul 120-749, South Korea
| | | | - Aniruddha Kundu
- School of Mechanical Engineering, Yonsei University , Seoul 120-749, South Korea
| | - Ming Ma
- Advanced Institute of Nanotechnology, Sungkyunkwan University , Suwon 440-746, South Korea
| | - Jang-Yeon Kwon
- School of Integrated Technology and Yonsei Institute of Convergence Technology, Yonsei University , Yeonsu-gu, Incheon 406-840, South Korea
| | - Seong Chan Jun
- School of Mechanical Engineering, Yonsei University , Seoul 120-749, South Korea
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31
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Tripathy SP, Sahoo GS, Paul S, Kumar P, Sharma SD, Santra S, Pal A, Kundu A, Bandyopadhyay T, Avasthi DK. Generation and application of LET calibration curve for neutron dosimetry using CR-39 detector and microwave induced chemical etching. Rev Sci Instrum 2017; 88:063301. [PMID: 28667951 DOI: 10.1063/1.4984621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Microwave induced chemical etching (MICE) has been established as a faster and improved technique compared to other contemporary etching techniques for the development of tracks in a CR-39 detector. However, the methodology could not be applied for LET (linear energy transfer) spectrometry due to lack of a calibration curve using this method. For this purpose, a new LET calibration curve in the range of 12 keV/μm-799 keV/μm was generated considering different ions such as H, Li, C, O, and F on CR-39 having different LETs in water. An empirical relation was established from the obtained calibration curve for determining the value of LET (in water) from the value of V, the ratio of track etch rate to bulk etch rate. For application of this calibration curve in neutron dosimetry, CR-39 detectors were irradiated to neutrons generated from 120 and 142 MeV 16O+27Al systems followed by a similar MICE procedure. The absorbed dose (DLET) and the dose equivalent (HLET) were obtained from the LET spectra and were found to be 13% and 10% higher for 142 MeV 16O+27Al system than those for 120 MeV 16O+27Al system, respectively. The outcome of the study demonstrates the possibility of using the MICE technique for neutron dose estimation by CR-39 via LET spectrometry.
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Affiliation(s)
- S P Tripathy
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - G S Sahoo
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - S Paul
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - P Kumar
- Inter-University Accelerator Centre, New Delhi 110067, India
| | - S D Sharma
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - S Santra
- Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - A Pal
- Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - A Kundu
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - T Bandyopadhyay
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
| | - D K Avasthi
- Inter-University Accelerator Centre, New Delhi 110067, India
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Sreesujatha RM, Jeyakumar S, Kundu A, Balasundaram C. Use of transcutaneous ultrasonography to characterize ovarian status, size distribution, and hierarchical status of follicles in Japanese quail (Coturnix coturnix japonica). Theriogenology 2016; 86:1231-9. [PMID: 27233352 DOI: 10.1016/j.theriogenology.2016.04.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 04/14/2016] [Accepted: 04/14/2016] [Indexed: 10/21/2022]
Abstract
The present study was undertaken to evaluate the ovarian status of matured breeding female Japanese quail by means of B Mode portable ultrasound scanning. Active ovaries in various stages of hierarchical development and different morphological structure were observed. The large yellow follicles appeared as a cluster of dark circles with various intensity of hyperechoic concentric ring. Sonographically, these follicles were classified into F1, F2, and F3 measuring 16.20 ± 0.06 mm, 12.48 ± 0.09 mm, and 7.95 ± 0.16 mm, respectively. A comparative study on preslaughter and postslaughter ovarian follicular status revealed accuracy of follicles less than 10 mm, 10-15 mm, 15-18 mm, and greater than 18 mm as 26.31%, 78.9%, 93.75%, and 100%, respectively, with an overall accuracy of 71%. This is the first report on the application of transcutaneous ultrasonographic technique to monitor ovarian status on Japanese quail reporting that the ovarian follicular activity and morphological structure can be monitored nonintrusively throughout quail life which can used as model for reproductive and biomedical research.
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Affiliation(s)
- R M Sreesujatha
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands 744 101, India.
| | - S Jeyakumar
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands 744 101, India
| | - A Kundu
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands 744 101, India
| | - Chellam Balasundaram
- Division of Animal Science, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands 744 101, India
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Abstract
Neuraxial anesthesia combined with general anesthesia has become a widely accepted method of providing effective postoperative analgesia and decreasing intraoperative anesthetic needs in the pediatric population. In clinical practice, there still appears to be hesitancy for the use of a neuraxial technique (spinal or epidural) in patients at risk for bacteremia or with an on-going systemic infection. However, evidence-based medicine lacks any data to support an increase in the risk of infectious complications following neuraxial anesthesia. We present two pediatric patients with intra-abdominal infectious processes who received caudal epidural blockade for postoperative operative analgesia. The use of neuraxial techniques in patients at risk for bacteremia is reviewed, evidence-based medicine regarding the risks of infection discussed, and the potential favorable effects of neuraxial blockade on the neurohumoral response to sepsis and the systemic inflammatory responses presented.
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Affiliation(s)
- H Kako
- Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA; Department of Anesthesiology and Pain Medicine, The Ohio State University, Columbus, Ohio, USA
| | - M Hakim
- Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - A Kundu
- Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA; Department of Anesthesiology and Pain Medicine, The Ohio State University, Columbus, Ohio, USA
| | - T D Tobias
- Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, Ohio, USA; Department of Anesthesiology and Pain Medicine, The Ohio State University, Columbus, Ohio, USA
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Kundu A, Nandi S, Das P, Nandi AK. Facile and green approach to prepare fluorescent carbon dots: Emergent nanomaterial for cell imaging and detection of vitamin B2. J Colloid Interface Sci 2016; 468:276-283. [DOI: 10.1016/j.jcis.2016.01.070] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 12/26/2022]
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Chattopadhyay D, Santra S, Pal A, Kundu A, Nayak BK, Mahata K, Ramachandran K, Tripathi R, Parkar VV, Sodaye S, Sarkar D, Pandey B, Kaur G. Elastic, inelastic and inclusive alpha cross sections in 6Li+ 112Sn system. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611706022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Ray M, Guha S, Ray M, Kundu A, Ray B, Kundu K, Goswami S, Bhatt D, Selker H, Goldberg R. Cardiovascular health awareness among school-aged children in a rural district of India. Indian Heart J 2015. [DOI: 10.1016/j.ihj.2015.10.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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37
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Bhowmick S, Pal P, Chakraborty B, Sikdar S, Chakraborty S, Banerjee M, Kundu A. Letter to the Editor. Int J Risk Saf Med 2015; 27:101-2. [PMID: 26410013 DOI: 10.3233/jrs-150647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Subhrojyoti Bhowmick
- Consultant Clinical Pharmacologist and Medical Superintendent, Peerless Hospitex Hospital and Research Center Limited, Kolkata - 700094, West Bengal, India. Tel.: +91 9830204863,
| | - Panchali Pal
- Consultant Clinical Pharmacologist and Medical Superintendent, Peerless Hospitex Hospital and Research Center Limited, Kolkata - 700094, West Bengal, India. Tel.: +91 9830204863,
| | - Banani Chakraborty
- Deputy Nursing Superintendent, Peerless Hospitex Hospital and Research Center Limited, Kolkata, India
| | - Shreya Sikdar
- Ex-Executive - Clinical Research, Peerless Hospitex Hospital and Research Center Limited, Kolkata, India
| | | | - Meena Banerjee
- Chief Nursing Superintendent, Peerless Hospitex Hospital and Research Center Limited, Kolkata, India
| | - A Kundu
- Guest Faculty, Calcutta University, College Street Campus, Kolkata, India
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Kundu A. Role of hands in diarrheal pathogen transmission in a threshold
country. Ann Glob Health 2015. [DOI: 10.1016/j.aogh.2015.02.1016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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39
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Kundu A, Nandi S, Das P, Nandi AK. Fluorescent graphene oxide via polymer grafting: an efficient nanocarrier for both hydrophilic and hydrophobic drugs. ACS Appl Mater Interfaces 2015; 7:3512-3523. [PMID: 25612470 DOI: 10.1021/am507110r] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Functionalized graphene-based drug delivery vehicles have conquered a significant position because functionalization improves its biocompatibility and stability in cell medium, leaving sufficient graphitic basal plane for drug loading through π-π stacking. In this study, poly(N-isopropylacrylamide) (PNIPAM) is covalently grafted from the surface of graphene oxide (GO) via a facile, eco-friendly and an easy procedure of free radical polymerization (FRP) using ammonium persulfate initiator. Various spectroscopic and microscopic studies confirm the successful grafting of PNIPAM from GO surface. PNIPAM-grafted GO (GPNM) exhibits enhanced thermal stability, improved dispersibility both in aqueous and cell medium, and better biocompatibility and cell viability compared to GO. Interestingly, GPNM displays an exciting fluorescence property in aqueous medium, which is a hike of intensity at 36 °C due to the lower critical solution temperature (LCST) of PNIPAM chains (32 °C). Moreover both hydrophilic (doxorubicin (DOX)) and hydrophobic (indomethacin (IMC)) drugs loaded on the surface of GPNM hybrid exhibits its efficacy as an efficient carrier for both types of drugs. Cellular uptakes of free DOX and DOX-loaded GPNM (GPNM-DOX) are evidenced both from optical and fluorescence imaging of live cells, and the efficiency of drug is significantly improved in the loaded system. The release of DOX from GPNM-DOX was achieved at pH 4, relevant to the environment of cancer cells. The pH-triggered release of hydrophobic drug was also studied using UV-vis spectroscopy via alginate encapsulation, showing a great enhancement at pH = 7.4. The IMC is also found to be released by human serum albumin using dialysis technique. The GPNM nanomaterial shows the property of simultaneous loading of DOX and IMC as well as pH-triggered simultaneous release of both of the drugs.
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Affiliation(s)
- Aniruddha Kundu
- Polymer Science Unit, Indian Association for the Cultivation of Science , Jadavpur, Kolkata 700 032, India
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Choudhuri NC, Paul G, Kundu A, Kundu MS, De AK, Ram N. Evaluation of egg quality traits of endangered Nicobari fowl and its crosses under intensive and backyard system of Andaman and Nicobar Islands, India. Vet World 2014. [DOI: 10.14202/vetworld.2014.693-697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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41
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Sunder J, Jeyakumar S, Sujatha T, Kundu A. Grommune: Morinda citrifolia-based herbal tonic for growth and immunity for commercial broilers. Journal of Applied Animal Research 2014. [DOI: 10.1080/09712119.2014.928628] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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42
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Kundu MS, De AK, Jeyakumar S, Sunder J, Kundu A, Sujatha T. Effect of zinc supplementation on reproductive performance of Teressa goat. Vet World 2014. [DOI: 10.14202/vetworld.2014.380-383] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Tusch S, Kundu A, Verley G, Blondel T, Miralles V, Démoulin D, Lacoste D, Baudry J. Energy versus information based estimations of dissipation using a pair of magnetic colloidal particles. Phys Rev Lett 2014; 112:180604. [PMID: 24856685 DOI: 10.1103/physrevlett.112.180604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Indexed: 06/03/2023]
Abstract
Using the framework of stochastic thermodynamics, we present an experimental study of a doublet of magnetic colloidal particles that is manipulated by a time-dependent magnetic field. Because of hydrodynamic interactions, each bead experiences a state-dependent friction, which we characterize using a hydrodynamic model. In this work, we compare two estimates of the dissipation in this system: the first one is energy based since it relies on the measured interaction potential, while the second one is information based since it uses only the information content of the trajectories. While the latter only offers a lower bound of the former, we find it to be simple to implement and of general applicability to more complex systems.
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Affiliation(s)
- S Tusch
- Laboratoire LCMD, ESPCI, 10 rue Vauquelin, F-75231 Paris, France
| | - A Kundu
- Laboratoire de Physico-Chimie Théorique, UMR CNRS Gulliver 7083, ESPCI, 10 rue Vauquelin, F-75231 Paris, France
| | - G Verley
- Laboratoire de Physico-Chimie Théorique, UMR CNRS Gulliver 7083, ESPCI, 10 rue Vauquelin, F-75231 Paris, France
| | - T Blondel
- Laboratoire de Physico-Chimie Théorique, UMR CNRS Gulliver 7083, ESPCI, 10 rue Vauquelin, F-75231 Paris, France
| | - V Miralles
- Laboratoire LCMD, ESPCI, 10 rue Vauquelin, F-75231 Paris, France
| | - D Démoulin
- Laboratoire LCMD, ESPCI, 10 rue Vauquelin, F-75231 Paris, France
| | - D Lacoste
- Laboratoire de Physico-Chimie Théorique, UMR CNRS Gulliver 7083, ESPCI, 10 rue Vauquelin, F-75231 Paris, France
| | - J Baudry
- Laboratoire LCMD, ESPCI, 10 rue Vauquelin, F-75231 Paris, France
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Nandi S, Mukherjee P, Kundu A, Nandi AK. Nanojacketing and Dejacketing of ds-DNA: A Nondestructive Characterization of a Nanojacketed Sample by Impedance Spectroscopy. J Phys Chem B 2014; 118:2649-61. [DOI: 10.1021/jp412373m] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Sudipta Nandi
- Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Pratap Mukherjee
- Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Aniruddha Kundu
- Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
| | - Arun K. Nandi
- Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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Porel A, Sanyal Y, Kundu A. Simultaneous HPLC determination of 22 components of essential oils; method robustness with experimental design. Indian J Pharm Sci 2014; 76:19-30. [PMID: 24799735 PMCID: PMC4007251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 11/20/2013] [Accepted: 11/28/2013] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was the development and validation of a simple, precise and specific reversed phase HPLC method for the simultaneous determination of 22 components present in different essential oils namely cinnamon bark oil, caraway oil and cardamom fruit oil. The chromatographic separation of all the components was achieved on Wakosil-II C18 column with mixture of 30 mM ammonium acetate buffer (pH 4.7), methanol and acetonitrile in different ratio as mobile phase in a ternary linear gradient mode. The calibration graphs plotted with five different concentrations of each component were linear with a regression coefficient R(2) >0.999. The limit of detection and limit of quantitation were estimated for all the components. Effect on analytical responses by small and deliberate variation of critical factors was examined by robustness testing with Design of Experiment employing Central Composite Design and established that this method was robust. The method was then validated for linearity, precision, accuracy, specificity and demonstrated to be applicable to the determination of the ingredients in commercial sample of essential oil.
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Affiliation(s)
- A. Porel
- East India Pharmaceutical Works Limited, Quality Control Department, 119, Biren Roy Road (W), Kolkata-700 061, India,Address for correspondence: E-mail:
| | - Y. Sanyal
- East India Pharmaceutical Works Limited, Quality Control Department, 119, Biren Roy Road (W), Kolkata-700 061, India
| | - A. Kundu
- East India Pharmaceutical Works Limited, Quality Control Department, 119, Biren Roy Road (W), Kolkata-700 061, India
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46
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Kundu A, De AK, Kundu MS, Sunder J, Jeyakumar S. Comparative haematology of Vanaraja, Nicobari fowls and their various F1 crosses under hot humid climate of Andaman and Nicobar Islands, India. Vet World 2013. [DOI: 10.14202/vetworld.2013.1008-1011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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47
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Muy S, Kundu A, Lacoste D. Non-invasive estimation of dissipation from non-equilibrium fluctuations in chemical reactions. J Chem Phys 2013; 139:124109. [DOI: 10.1063/1.4821760] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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De AK, Kundu A, Kundu M, Sunder J, Jeyakumar S. Comparative study on haematological traits of endangered Andaman wild pig and other indigenous pig breeds available at Andaman and Nicobar Islands, India. Vet World 2013. [DOI: 10.14202/vetworld.2013.794-798] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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49
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Kundu A, Nandi S, Layek RK, Nandi AK. Fluorescence resonance energy transfer from sulfonated graphene to riboflavin: a simple way to detect vitamin B2. ACS Appl Mater Interfaces 2013; 5:7392-7399. [PMID: 23838272 DOI: 10.1021/am4017208] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We have prepared sulfonated graphene (SG) by diazonium coupling technique and it has been characterized by UV-vis absorption spectroscopy, Raman spectroscopy, electron microscopy, energy-dispersive spectroscopy (EDS), EDS elemental mapping, X-ray photoelectron spectroscopy (XPS), and FTIR spectroscopy. The photoluminescence (PL) property of SG at different pH (pH 4, 7, and 9.2) has been investigated and SG shows highest PL-intensity and quantum yield at pH 4 compared to those at higher pH and that of GO at pH 4. Due to the strong overlap between the emission spectrum of SG and absorption spectrum of riboflavin (RF, vitamin B2) at pH 4, it has been tactfully used as donor for the fluorescence resonance energy transfer (FRET) process. However, graphene oxide (GO) does not exhibit any FRET with RF at an identical condition due to its much lower quantum yield. We have demonstrated a selective detection of vitamin B2 in presence of nucleic acid (DNA, RNA), protein (BSA), amino acid (Lysine) and other water-soluble vitamins (Becosules, Zevit capsules) based on the spontaneous FRET from PL-active SG (donor) to RF (acceptor). The calibration curve indicates excellent affirmation to detect vitamin B2 using FRET and it is superior to the ordinary fluorescence method of detecting RF in presence of different biomolecules.
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Affiliation(s)
- Aniruddha Kundu
- Polymer Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India
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50
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De AK, Kundu A, Kundu M, Sunder J, Jeyakumar S, Ramachandran M. Genetic characterization of Andaman Desi pig, an indigenous pig germplasm of Andaman and Nicobar group of islands, India by microsatellite markers. Vet World 2013. [DOI: 10.14202/vetworld.2013.750-753] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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