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129 results on '"Lopes, R. M."'

102. A GLOBAL GEOLOGICAL MAP OF PLUTO AT 1:7M SCALE.

Author

White, O. L., Singer, K. N., Williams, D. A., Moore, J. M., and Lopes, R. M. C.

Subjects
PLUTO (Dwarf planet), GEOLOGICAL mapping, GEOLOGICAL maps, ICE prevention & control, ATMOSPHERIC circulation
Published
2021

103. FIRST USGS GLOBAL GEOLOGIC MAP OF TITAN.

Author

Williams, D. A., Malaska, M. J., Lopes, R. M. C., Schoenfeld, A. M., and Birch, S. P. D.

Subjects
GEOLOGICAL maps, GEOLOGICAL mapping, SYNTHETIC aperture radar
Published
2021

104. PROGRESS ON GLOBAL GEOLOGIC MAPPING OF PLUTO.

Author

White, O. L., Singer, K. N., Williams, D. A., Moore, J. M., Lopes, R. M. C., Stern, S. A., and McGovern, P. J.

Subjects
GEOLOGICAL maps, PLUTO (Dwarf planet), GEOLOGICAL mapping, GEOLOGICAL surveys
Abstract

We are using established planetary geologic mapping techniques [1] to produce a global US Geological Survey Scientific Investigations Map (SIM) at 1:7M scale for the >75% of Pluto's surface that was imaged during the New Horizons flyby in 2015. The well-resolved encounter hemisphere is covered by imaging between 76 to 890 m/pixel, and the poorly-resolved far side by imaging between 2.2 to 40.6 km/pixel. We have divided Pluto's encounter hemisphere into six geological groups, with each group consisting of units that are interpreted to represent a distinct episode of geological activity on Pluto's surface (Fig. 1). We will present a summary of the mapping that has been completed to date, which includes the Sputnik, Wright, Tartarus, and Hayabusa groups, in addition to structural mapping of the entire encounter hemisphere [2]. Geologic mapping of Pluto's far side has been completed for a separate study [3], the line work of which will be imported into the final SIM upon completion of mapping of the encounter hemisphere. [ABSTRACT FROM AUTHOR]

Published
2021

107. THE GEOLOGY OF PLUTO.

Author

Singer, K. N., White, O. L., Moore, J. M., Howard, A. D., Schenk, P. M., Williams, D. A., Lopes, R. M. C., Stern, S. A., Ennico, K., Olkin, C. B., Weaver, H. A., and Young, L. A.

Subjects
PLUTO (Dwarf planet), GEOLOGY, PHYSIOGRAPHIC provinces, PLANETARY science, GLACIAL landforms
Published
2019

111. CUBESATS TO SUPPORT FUTURE IO EXPLORATION.

Author

Williams, D. A., Lopes, R. M. C., Castillo-Rogez, J., and Scowen, P.

Subjects
CUBESATS (Artificial satellites), SPACE exploration, EARTH (Planet)
Published
2017

112. PROGRESS ON GLOBAL GEOLOGIC MAPPING OF PLUTO.

Author

White, O. L., Singer, K. N., Williams, D. A., Moore, J. M., Lopes, R. M. C., Stern, S. A., and McGovern, P. J.

Subjects
PLUTO (Dwarf planet), GEOLOGICAL surveys, GEOLOGICAL mapping, CARTOGRAPHY software
Abstract

We are using established planetary geologic mapping techniques [1] to produce a global US Geological Survey Scientific Investigations Map (SIM) at 1:7M scale for the >75% of Pluto’s surface that was imaged during the New Horizons flyby in 2015. The well-resolved encounter hemisphere is covered by imaging between 76 to 890 m/pixel, and the poorly-resolved far side by imaging between 2.2 to 40.6 km/pixel. We have divided Pluto’s encounter hemisphere into six geological groups, with each group consisting of units that are interpreted to represent a distinct episode of geological activity on Pluto’s surface (Fig. 1). We will present a summary of the mapping that has been completed to date, which includes the Sputnik, Wright, Tartarus, and Hayabusa groups, in addition to structural mapping of the entire encounter hemisphere [2]. Geologic mapping of Pluto’s far side has been completed for a separate study [3], the line work of which will be imported into the final SIM upon completion of mapping of the encounter hemisphere. [ABSTRACT FROM AUTHOR]

Published
2020

114. Morphology of Four Flow Fields on Titan: Implications for Modes of Origin

Author

Stofan, E. R., Farr, T., Kirk, R. L., Lopes, R. M., Lorenz, R., Lunine, J.I., Mitchell, K. L., Paillou, Philippe, Radebaugh, J., Wall, S. W., Wood, C. A., Cassini Radar Team, Proxemy Research Inc, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), US Geological Survey [Flagstaff], United States Geological Survey [Reston] (USGS), Johns Hopkins University Applied Physics Laboratory [Laurel, MD] (APL), Lunar and Planetary Laboratory [Tucson] (LPL), University of Arizona, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire aquitain des sciences de l'univers (OASU), Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Wheeling Jesuit University

Subjects
[PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
Abstract

We describe four flow fields associated with channels that have been observed in Cassini Radar data of Titan.

118. Rare sexual anomalies in Temora stylifera (Dana, 1849) (Copepoda: Calanoida).

Author

Martinelli-Filho, J. E., Melo-Júnior, M., Cunha, D. R., and Lopes, R. M.

Subjects
SEXUAL behavior in fishes, CRUSTACEAN anatomy, COPEPODA, SHELLFISH, GYNANDROMORPHISM, SEX (Biology)
Abstract

The authors describe the two species of Temora stylifera they have identified in Southern Brazil which exhibit sexual anomalies. They say that the gynandromorphic copepoda had an ovary, oviducts, female genital somite, antennule and fifth leg. The male copepoda has the same antennules, microcosms and swimming behavior with other species. They also discovered geniculation on both male antennules.

Published
2009
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120. Characterization of Staphylococcus aureus Isolates Recovered from Bovine Mastitis in Rio de Janeiro, Brazil.

Author

Rabello, R. F., Souza, C. R. V. M., Duarte, R. S., Mo Lopes, R. M., Teixeira, L. M., and Castro, A. C. D.

Subjects
*MICROBIAL sensitivity tests, *STAPHYLOCOCCUS aureus, *BOVINE mastitis, *VANCOMYCIN, *ELECTROPHORESIS, *ANTIBACTERIAL agents
Abstract

Phenotypic characteristics, antimicrobial susceptibility, and genetic relationships were analyzed in 107 Staphylococcus aureus isolates recovered from cows with subclinical mastitis in Southeastern Brazil. Thirteen different biochemical patterns were detected among isolates. A predominant pattern represented by about 54% of the isolates was distributed among several herds. Isolates of distinct phenotypic profiles were also detected within a herd. Susceptibility to ampicillin, cefotaxime, cephalotin, chloramphenicol, erythromycin, gentamycin, kanamycin, nitrofurantoin, norfloxacin, ofloxacin, oxacillin, penicillin, rifampin, sulfamethoxazole-trimethoprim, tetracycline, trimethoprim, and vancomycin, determined by the disk diffusion method, was observed in 44.9% of isolates. On the other hand, 55.1, 7.4, and 2.8% of the strains were resistant to ampicillin/penicillin, tetracycline, and erythromycin, respectively. Genetic diversity was analyzed by pulsed-field gel electrophoresis using SmaI as the restriction enzyme. All isolates could be typed by pulsed-field gel electrophoresis, which identified 16 types and 24 subtypes. Type A and its subtypes comprised 54.2% of all isolates and were recovered from 6 of the 9 herds analyzed. Other types and subtypes were also found in multiple herds. Although multiple types and subtypes were found within a specific herd, a predominant type was frequently observed. [ABSTRACT FROM AUTHOR]

Published
2005
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121. Titan as Revealed by the Cassini Radar

Author

Federico Tosi, L. A. Soderblom, Charles Elachi, G. Mitri, Zhimeng Zhang, Alexander G. Hayes, S. D. Wall, Jason M. Soderblom, P. Paillou, Elizabeth P. Turtle, Richard West, R. L. Kirk, Gian Gabriele Ori, Tom G. Farr, Howard A. Zebker, Claudia Notarnicola, Paul Corlies, M. Mastroguiseppe, Jason W. Barnes, Antoine Lucas, K. L. Mitchell, Jason D. Hofgartner, Bryan Stiles, Athena Coustenis, Valerio Poggiali, A. Solomonidou, Cyril Grima, Roberto Orosei, O. Karatekin, E. R. Stofan, Jani Radebaugh, Spd Birch, Rmc Lopes, Domenico Casarano, A. LeGall, P Encrenaz, Michael Malaska, Charles A. Wood, Flora Paganelli, Douglas J. Hemingway, Daniele Riccio, Sebastien Rodriguez, Catherine D. Neish, M. A. Janssen, R. D. Lorenz, Paul Ries, Jonathan I. Lunine, Ashley Schoenfeld, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Department of Astronomy [Ithaca], Cornell University, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Astrogeology Science Center [Flagstaff], United States Geological Survey [Reston] (USGS), University of Arizona, Lunar and Planetary Laboratory [Tucson] (LPL), Università degli Studi di Roma 'La Sapienza' [Rome], Laboratoire de Planétologie et Géodynamique UMR6112 (LPG), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Nantes - Faculté des Sciences et des Techniques, Université de Nantes (UN)-Université de Nantes (UN)-Université d'Angers (UA), Florida Institute of Technology [Melbourne], Institut de génétique humaine (IGH), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Service de cardiologie [Hôpital Nord - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital Nord [CHU - APHM], Observatoire Bordeaux, Université Sciences et Technologies - Bordeaux 1, Department of Geological Sciences [BYU], Brigham Young University (BYU), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Department of Earth, Planetary and Space Sciences [Los Angeles] (EPSS), University of California [Los Angeles] (UCLA), University of California-University of California, Proxemy Research Inc, Johns Hopkins University Applied Physics Laboratory [Laurel, MD] (APL), Wheeling Jesuit University, Department of Electrical Engineering [Stanford], Stanford University [Stanford], Istituto di Ricerca per la Protezione Idrogeologica [Bari] (IRPI), Consiglio Nazionale delle Ricerche [Roma] (CNR), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Swedish Institute of Space Physics [Uppsala] (IRF), Miller Institute for Basic Research in Science, University of California [Berkeley], Royal Observatory of Belgium [Brussels], Institut de Physique du Globe de Paris (IPGP), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), International Research School of Planetary Sciences [Pescara] (IRSPS), Università degli studi 'G. d'Annunzio' Chieti-Pescara [Chieti-Pescara] (Ud'A), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), Division of Geological and Planetary Sciences [Pasadena], California Institute of Technology (CALTECH), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), IMPEC - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Department of Earth Sciences [London, ON], University of Western Ontario (UWO), Institute for Earth Observation [Bolzano], EURAC Research, Search for Extraterrestrial Intelligence Institute (SETI), ASP 2019, Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS), Department of Earth, Atmospheric and Planetary Sciences [MIT, Cambridge] (EAPS), Massachusetts Institute of Technology (MIT), European Space Astronomy Centre (ESAC), European Space Agency (ESA), Smithsonian National Air and Space Museum, Smithsonian Institution, Istituto di Astrofisica e Planetologia Spaziali - INAF (IAPS), Istituto Nazionale di Astrofisica (INAF), Planetary Science Institute [Tucson] (PSI), Department of Physics [Moscow,USA], University of Idaho [Moscow, USA], Istituto di Ricerca per la Protezione Idrogeologica [Padova] (IRPI), Institute of Geophysics [Austin] (IG), University of Texas at Austin [Austin], Istituto di Radioastronomia (IRA), Dipartimento di Ingegneria Elettrica e delle Tecnologie dell'Informazione [Napoli] (DIETI), Università degli studi di Napoli Federico II, Cornell University [New York], Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), PLANETO - LATMOS, Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], European Academy Bozen/Bolzano (EURAC), Stanford University, Royal Observatory of Belgium [Brussels] (ROB), Istituto di Radioastronomia [Bologna] (IRA), Lopes, R. M. C., Wall, S. D., Elachi, C., Birch, S. P. D., Corlies, P., Coustenis, A., Hayes, A. G., Hofgartner, J. D., Janssen, M. A., Kirk, R. L., Legall, A., Lorenz, R. D., Lunine, J. I., Malaska, M. J., Mastroguiseppe, M., Mitri, G., Neish, C. D., Notarnicola, C., Paganelli, F., Paillou, P., Poggiali, V., Radebaugh, J., Rodriguez, S., Schoenfeld, A., Soderblom, J. M., Solomonidou, A., Stofan, E. R., Stiles, B. W., Tosi, F., Turtle, E. P., West, R. D., Wood, C. A., Zebker, H. A., Barnes, J. W., Casarano, D., Encrenaz, P., Farr, T., Grima, C., Hemingway, D., Karatekin, O., Lucas, A., Mitchell, K. L., Ori, G., Orosei, R., Ries, P., Riccio, D., Soderblom, L. A., Zhang, Z., ITA, USA, FRA, and Hôpital Nord [CHU - APHM]-Assistance Publique - Hôpitaux de Marseille (APHM)-Aix Marseille Université (AMU)

Subjects
Exploration of Saturn, 010504 meteorology & atmospheric sciences, [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], 01 natural sciences, Liquid methane, law.invention, Astrobiology, symbols.namesake, [SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology, law, 0103 physical sciences, [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology, Radar, Enceladus, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Astronomy and Astrophysics, Cassini, radar, Titan, Planetary science, 13. Climate action, Space and Planetary Science, symbols, Titan (rocket family), Geology
Abstract

International audience; Titan was a mostly unknown world prior to the Cassini spacecraft’s arrival in July 2004. We review the major scientific advances made by Cassini’s Titan Radar Mapper (RADAR) during 13 years of Cassini’s exploration of Saturn and its moons. RADAR measurements revealed Titan’s surface geology, observed lakes and seas of mostly liquid methane in the polar regions, measured the depth of several lakes and seas, detected temporal changes on its surface, and provided key evidence that Titan contains an interior ocean. As a result of the Cassini mission, Titan has gone from an uncharted world to one that exhibits a variety of Earth-like geologic processes and surface-atmosphere interactions. Titan has also joined the ranks of “ocean worlds” along with Enceladus and Europa, which are prime targets for astrobiological research.

Published
2019
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122. Titan's diverse landscapes as evidenced by Cassini RADAR's third and fourth looks at Titan

Author

L. Roth, Y. Anderson, Rosaly M. C. Lopes, S. D. Wall, Bashar Rizk, R. Boehmer, William T. K. Johnson, Roberto Orosei, S. Hensley, Robert West, Bobby Kazeminejad, Yonggyu Gim, K. Kelleher, M. A. Janssen, Giorgio Franceschetti, Howard A. Zebker, G. Hamilton, Pierre Encrenaz, Laurence A. Soderblom, Roberto Seu, Flora Paganelli, S. Shaffer, Francesco Posa, Steven J. Ostro, Ralph D. Lorenz, Enrico Flamini, Randolph L. Kirk, Jani Radebaugh, Charles A. Wood, C. See, Charles Elachi, P. Paillou, Philip S. Callahan, Michael Allison, Jonathan I. Lunine, Lauren Wye, Elisabeth A. McFarlane, Ellen R. Stofan, S. Vetrella, Bryan Stiles, Giovanni Picardi, Duane O. Muhleman, Erich Karkoschka, Giovanni Alberti, Lunine, J. I., Elachi, C., Wall, S. D., Janssen, M. A., Allison, M. D., Anderson, Y., Boehmer, R., Callahan, P., Encrenaz, P., Flamini, E., Franceschetti, G., Gim, Y., Hamilton, G., Hensley, S., Johnson, W. T. K., Kelleher, K., Kirk, R. L., Lopes, R. M., Lorenz, R. D., Muhleman, D. O., Orosei, R., Ostro, S. J., Paganelli, F., Paillou, P., Picardi, G., Posa, F., Radebaugh, J., Roth, L. E., Seu, R., Shaffer, S., Soderblom, L. A., Stiles, B., Stofan, E. R., Vetrella, Sergio, West, R., Wood, C. A., Wye, L., Zebker, H., Alberti, G., Karkoschka, E., Rizk, B., Mcfarlane, E., See, C., Kazeminejad, B., Lunar and Planetary Laboratory [Tucson] (LPL), University of Arizona, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Istituto di Fisica dello Spazio Interplanetario (IFSI), Consiglio Nazionale delle Ricerche (CNR), NASA Goddard Institute for Space Studies (GISS), NASA Goddard Space Flight Center (GSFC), Observatoire de Paris - Site de Paris (OP), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Facoltá di Ingegneria, Facoltá di Ingegneria, Naples, US Geological Survey [Flagstaff], United States Geological Survey [Reston] (USGS), Division of Geological and Planetary Sciences [Pasadena], California Institute of Technology (CALTECH), CNR-IASF, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Sciences et Technologies - Bordeaux 1, Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Dipartimento Interateneo di Fisica, Politecnico di Bari, Proxemy Research Inc, Planetary Science Institute [Tucson] (PSI), Stanford University, Department of Electrical Engineering [Stanford], CO.RI.S.T.A., European Space Department, Johns Hopkins University (JHU), Johns Hopkins University Applied Physics Laboratory [Laurel, MD] (APL), Dept. Geological Sciences, and Brigham Young University (BYU)

Subjects
Synthetic aperture radar, 010504 meteorology & atmospheric sciences, Terrain, radar observations, surfaces, 01 natural sciences, law.invention, Latitude, Sand dune stabilization, Astrobiology, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], symbols.namesake, Paleontology, geological processes, geophysics, satellites, titan, law, 0103 physical sciences, Radar, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Titan moon, Astronomy and Astrophysics, Crust, Tectonics, Radar imaging, Space and Planetary Science, Physical Sciences, symbols, Cassini, Titan (rocket family), Geology
Abstract

International audience; Cassini's third and fourth radar flybys, T7 and T8, covered diverse terrains in the high southern and equatorial latitudes, respectively. The T7 synthetic aperture radar (SAR) swath is somewhat more straightforward to understand in terms of a progressive poleward descent from a high, dissected, and partly hilly terrain down to a low flat plain with embayments and deposits suggestive of the past or even current presence of hydrocarbon liquids. The T8 swath is dominated by dunes likely made of organic solids, but also contain somewhat enigmatic, probably tectonic, features that may be partly buried or degraded by erosion or relaxation in a thin crust. The dark areas in T7 show no dune morphology, unlike the dark areas in T8, but are radiometrically warm like the dunes. The Huygens landing site lies on the edge of the T8 swath; correlation of the radar and Huygens DISR images allows accurate determination of its coordinates, and indicates that to the north of the landing site sit two large longitudinal dunes. Indeed, had the Huygens probe trajectory been just 10 km north of where it actually was, images of large sand dunes would have been returned in place of the fluvially dissected terrain actually seen?illustrating the strong diversity of Titan's landscapes even at local scales.

Published
2008
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124. Lunar and solar triggering of earthquakes

Author

A. Palumbo, Rosaly M. C. Lopes, Adriano Mazzarella, S.R.C. Malin, Lopes, R. M. C., Malin, S. R. C., Mazzarella, Adriano, and Palumbo, A.

Subjects
Physics and Astronomy (miscellaneous), Lune, Magnitude (mathematics), Astronomy and Astrophysics, Geophysics, Induced seismicity, Physics::Geophysics, Altitude, Space and Planetary Science, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Seismology, Geology
Abstract

The altitudes of the Sun and Moon have been calculated for the 541 great earthquakes (those with magnitude ⩾ 7.5) that occurred between 1897 and 1985. There is a tendency for more earthquakes to occur when the Sun or Moon is at an altitude of 30–50° above the horizon than would be expected by chance. Though neither the lunar nor the solar result is of high significance in itself, the experiments are independent so they may be combined, when they yield a significant result.

Published
1990

125. Assessment of the Ability of Desensitizing and Conventional Mouth Rinses to Promote Dentin Tubule Occlusion.

Author

Grandizoli D, Renzo A, Sakae LO, Lopes RM, Zezell DM, Aranha A, and Scaramucci T

Subjects
Benzoates, Dentin, Diamines, Edetic Acid, Fluorides, Microscopy, Electron, Scanning, Mouthwashes pharmacology, Mouthwashes therapeutic use, Sodium Dodecyl Sulfate, Sodium Fluoride, Water, Dentin Desensitizing Agents pharmacology, Dentin Desensitizing Agents therapeutic use
Abstract

This study aimed to evaluate the effect of desensitizing and conventional mouth rinses on dentin tubule occlusion. Dentin hypersensitivity was simulated by EDTA application for five minutes. The specimens were randomly allocated into the following groups: desensitizing mouth rinses (Colgate Sensitive, Elmex Sensitive Professional, Listerine Advanced Defense Sensitive, Sensodyne Cool Mint); conventional mouth rinses (Colgate Plax, Elmex Caries Protection, Listerine Anticaries, Sensodyne Pronamel); a negative control (C-: distilled water); and Clinpro XT Varnish was the positive control (C+). Subsequently, the specimens were submitted to an erosive or abrasive challenge (performed separately) and to an erosive/abrasive cycling for five days (n=10 for each challenge). After treatment, challenges, and cycling, the specimens were analyzed in an environmental scanning electron microscope to verify the number of open dentin tubules (ODTs), counted by using Image J software (National Institutes of Health, Bethesda, MD, USA). Data were analyzed by the Kruskal-Wallis, Friedman and Dunn tests, with Bonferroni correction (α=0.05). Groups did not differ at baseline (p>0.05). At the post-treatment, erosion and abrasion stages, C+ was the only group that showed a reduction in ODTs compared to C-(p<0.05). In the other groups, numbers did not differ significantly from C- (p>0.05). After cycling, none of the groups exhibited significant reduction in ODTs other than C- (p>0.05); however, C+, Listerine Anticaries, and Colgate Plax had a lower number of ODTs than Listerine Sensitive and Sensodyne Pronamel. No mouth rinse was able to promote significant occlusion of the dentin tubules after treatment and the challenges. C+ was the only product that effectively promoted tubular occlusion, but this effect did not withstand several erosive and abrasive challenges., (©Operative Dentistry, 2022.)

Published
2022
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126. Inihibition of mullet (M. liza) brain acetylcholinesterase activity by in vitro polycyclic aromatic hydrocarbon exposure.

Author

Hauser-Davis RA, Lopes RM, and Ziolli RL

Subjects
Acetylcholinesterase metabolism, Animals, Brain drug effects, Brazil, Ecotoxicology methods, Fish Proteins antagonists & inhibitors, Fish Proteins metabolism, Polycyclic Aromatic Hydrocarbons metabolism, Tropical Climate, Water Pollutants, Chemical metabolism, Water Pollutants, Chemical toxicity, Brain enzymology, Cholinesterase Inhibitors toxicity, Environmental Exposure adverse effects, Polycyclic Aromatic Hydrocarbons toxicity, Smegmamorpha metabolism
Abstract

Polycyclic aromatic hydrocarbons (PAH) have been reported as acetylcholinesterase (AChE) inibitors, although in vitro studies on PAH effects on AChE activity are scarce and have only been performed using electric eel brain extracts. Thus, this study investigated PAH effects on brain AChE activity in a tropical fish species in Southeastern Brazil, mullet (Mugil liza). Mullet specimens were obtained from Guanabara Bay (N = 20), Rio de Janeiro, Brazil. Brain AChE was extracted and exposed to an environmentally relevant concentration of Pyrene, Chrysene, Phenanthrene, and Naphthalene, and PAH metabolites, 2-Naphthol and 1-OH-Pyrene. AChE activity inhibition was observed, although no difference was observed between high- and low- molecular weight PAH. 2-Naphthol was a less potent AChE inhibitor than Naphthalene, albeit non-significantly. Further studies are required, since only one PAH concentration was used herein. Mullet brain extracts seem to be adequate to assess possible neurotoxic PAH effects on fish AChE., (Copyright © 2019 Elsevier Ltd. All rights reserved.)

Published
2019
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127. Are natural reservoirs important for cholera surveillance? The case of an outbreak in a Brazilian estuary.

Author

Martinelli Filho JE, Lopes RM, Rivera IN, and Colwell RR

Subjects
Animals, Brazil, Cholera microbiology, Estuaries, Humans, Pandemics, Water Microbiology, Bivalvia microbiology, Cholera epidemiology, Copepoda microbiology, Sewage microbiology, Vibrio cholerae O1 isolation & purification, Zooplankton microbiology
Abstract

Unlabelled: Paranaguá Bay is one of the largest estuarine systems on the Southern Brazilian coast. The only recorded cholera outbreak in this region since the early 20th century occurred in 1999 and resulted in 467 cases and at least three reported deaths in a population of approx. 150 000 people. This short communication reports historical, unpublished data related to that outbreak. Water, zooplankton and bivalve samples were collected and evaluated using direct fluorescence assay to determine whether Vibrio cholerae serogroups O1 and O139 were present in the estuarine system at that time. Most of the water (83%) and zooplankton samples (75%) were positive for V. cholerae O1, while V. cholerae O139 was not detected. Shellfish (Mytella sp.) were also positive for V. cholerae O1. These results indicate that the estuary, including biological vectors such as copepods and bivalves, comprise an important reservoir of V. cholerae O1 and a probable waterborne pathway for the disease, in addition to contamination with untreated sewage., Significance and Impact of the Study: Despite most of the cholera cases that occurred in Brazil during the 7th pandemic were located in the northern areas of the country, a significant outbreak in Paranaguá, an estuary in the south coast, resulted in at least three deaths in 1999. We report here the detection of Vibrio cholerae O1 in water, zooplankton and bivalve samples during the outbreak, using direct fluorescence assay as an alternative method for the traditional plate culture employed at the time by the Brazilian Sanitary Agency. Results demonstrate that aquatic natural reservoirs comprise a potential route of transmission of cholera, in addition to untreated sewage and routine monitoring is recommended., (© 2016 The Society for Applied Microbiology.)

Published
2016
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128. Quality of life related to oral mucositis of patients undergoing haematopoietic stem cell transplantation and receiving specialised oral care with low-level laser therapy: a prospective observational study.

Author

Bezinelli LM, Eduardo FP, Neves VD, Correa L, Lopes RM, Michel-Crosato E, Hamerschlak N, and Biazevic MG

Subjects
Adolescent, Adult, Aged, Child, Child, Preschool, Female, Hematologic Neoplasms therapy, Hospitalization, Humans, Infant, Infant, Newborn, Male, Middle Aged, Oral Health, Prospective Studies, Quality of Life, Young Adult, Hematopoietic Stem Cell Transplantation adverse effects, Low-Level Light Therapy methods, Stomatitis radiotherapy
Abstract

Oral mucositis is a painful condition that occurs in 80% of patients who undergo haematopoietic stem cell transplantation (HSCT). Our objective was to determine the impact of mucositis on quality of life (QoL) of patients subjected to HSCT treated with low-level laser therapy (LLLT). Patients were evaluated: (1) on the first day of treatment; (2) 5 days after autologous or 8 days after allogeneic transplantation; (3) once bone marrow had integrated; and (4) 30 days after discharge. Clinical evaluation was performed using the World Health Organization criteria; oral health QoL was measured using the Oral Health Impact Profile (OHIP-14); and mucositis symptoms with the Patient-Reported Oral Mucositis Symptom (PROMS) scale. The higher the score, the lower the patient's QoL. The OHIP-14 responses showed that at D + 5/D + 8, all domains had the highest scores, while at times 1 and 4, the scores were lower. In the PROMS scale, all domains scored worst at time 2, and the differences between the scores at the four times were statistically significant. The study has shown that QoL improves over time in patients undergoing LLLT therapy for mucositis prevention., (© 2015 John Wiley & Sons Ltd.)

Published
2016
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129. Natural products in anticancer therapy.

Author

da Rocha AB, Lopes RM, and Schwartsmann G

Subjects
Animals, Bacteria chemistry, Fungi chemistry, Humans, Marine Toxins therapeutic use, Antineoplastic Agents therapeutic use, Antineoplastic Agents, Phytogenic therapeutic use, Biological Products therapeutic use, Neoplasms drug therapy
Abstract

Many pharmaceutical agents have been discovered by screening natural products from plants, animals, marine organisms and microorganisms. Vincristine, irinotecan, etoposide and paclitaxel are examples of plant-derived compounds that are being employed in cancer treatment, and dactinomycin, bleomycin and doxorubicin are anticancer agents derived from microbial sources. Citarabine is an example of an anticancer agent originating from a marine source. Other agents originating from marine sources are bryostatin-1, aplidine, dolastatin 10 and ET-743, which have recently entered phase I and II clinical trials.

Published
2001
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