Gene and Genome Duplication in Acanthamoeba Polyphaga Mimivirus
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The Goddard Memorial Mrs
March 2004 Issue 3 Vol 1 NASA Remembers Columbia Crew with Dedications By Dewayne Washington Photo by Bill Ingalls/NASA On February 2, Remembering Columbia ... Page 1 NASA paused to Women History ................ Page 2 commemorate and honor lives lost in the Columbia Supporters ........ Page 3 continuing efforts of space exploration. A What Turns Hurricanes Into memorial to the Monsters .......................... Page 4 fallen heroes of Can We Talk? ................... Page 4 Space Shuttle Columbia was Why Go? ......................... Page 5 unveiled during a ceremony early in the Explorer Schools Visits ..... Page 7 day at Arlington Blind Can Reach ............... Page 8 National Cemetery. Family members of The Goddard Memorial Mrs. Sandy Anderson, wife of Columbia astronaut Michael Anderson, the STS-107crew Symposium ...................... Page 9 looks at the memorial along with astronauts Steve Robinson (right) were the first to see and Carlos Noriega (left). another permanent Goddard in the News ....... Page 9 marker of the dangers of space flight. The new memorial is just a few feet from one Black History Activities .. Page 10 honoring the crew of Space Shuttle Challenger, lost on January 28, 1986. Employee Spotlight ........ Page 11 In his remarks, Administrator O’Keefe stated that future visitors to the site will learn that these space heroes came from all parts of the United States and from the lands Goddard Meet CFC Goal .. Page 12 of India and Israel. “They were pilots, engineers and scientists, all motivated by a fire Gay/Straight Alliance ..... Page 12 within, a passionate eternal flame within each of their souls that compelled them to live lives of distinction, and to bring the heavens ever closer to our grasp.” Movie Days .................... -
Evidence for Thermal-Stress-Induced Rockfalls on Mars Impact Crater Slopes
Icarus 342 (2020) 113503 Contents lists available at ScienceDirect Icarus journal homepage: www.elsevier.com/locate/icarus Evidence for thermal-stress-induced rockfalls on Mars impact crater slopes P.-A. Tesson a,b,*, S.J. Conway b, N. Mangold b, J. Ciazela a, S.R. Lewis c, D. M�ege a a Space Research Centre, Polish Academy of Science, Wrocław, Poland b Laboratoire de Plan�etologie et G�eodynamique UMR 6112, CNRS, Nantes, France c School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK ARTICLE INFO ABSTRACT Keywords: Here we study rocks falling from exposed outcrops of bedrock, which have left tracks on the slope over which Mars, surface they have bounced and/or rolled, in fresh impact craters (1–10 km in diameter) on Mars. The presence of these Thermal stress tracks shows that these rocks have fallen relatively recently because aeolian processes are known to infill Ices topographic lows over time. Mapping of rockfall tracks indicate trends in frequency with orientation, which in Solar radiation � � turn depend on the latitudinal position of the crater. Craters in the equatorial belt (between 15 N and 15 S) Weathering exhibit higher frequencies of rockfall on their north-south oriented slopes compared to their east-west ones. � Craters >15 N/S have notably higher frequencies on their equator-facing slopes as opposed to the other ori entations. We computed solar radiation on the surface of crater slopes to compare insolation patterns with the spatial distribution of rockfalls, and found statistically significant correlations between maximum diurnal inso lation and rockfall frequency. -
Surface Sediment Characteristics and Distribution
United States Department of the Interior United States Geological Survey Inner West-Central Florida Continental Shelf: Surface Sediment Characteristics and Distribution by: Gregg R. Brooks \ Larry J. Doyle 2, Nancy T. DeWitt 2'3, and Beau C. Suthard 1 Open File Report: 98-37 1 Eckerd College, Department of Marine Science, Saint Petersburg, FL 2 University of South Florida, Department of Marine Science, Saint Petersburg, FL 3 United States Geological Survey, Saint Petersburg, FL This report is preliminary and has not been reviewed for conformity with United States Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the United States Geological Survey. TABLE OF CONTENTS page List of Figures iii Introduction 1 Methods 5 Results and Discussion 13 Sediment Distribution 45 References Cited 47 Appendix 1. Sedimentologic data for all sample sites A1 Ill List of Figures page Fig 1. Location map of west-central Florida 3 showing study area. Fig. 2. Map of entire study area showing sites of 7 samples collected at 1/2-hour intervals during seismic survey. Fig. 3. Map showing sample sites of area of 9 concentration off Sarasota Bay (see Fig. 1). Fig. 4. Map of entire study area showing mean 15 grain size values in 0 units. Fig 5. Map of entire study area showing mean 17 grain size distribution. Fig. 6. Map of area of concentration showing 19 mean grain size values in 0 units. Fig. 7. Map of area of concentration showing 21 mean grain size distribution. -
AMPEZZO a Cura Di C
NOTE ILLUSTRATIVE della CARTA GEOLOGICA D’ITALIA alla scala 1:50.000 foglio 031 AMPEZZO a cura di C. Venturini1 (coordinamento e redazione) contributi tematici C. Venturini1, C. Spalletta1, G.B. Vai1, M. Pondrelli2, C. Fontana3, S. Delzotto3, G. Longo Salvador4 & G.B. Carulli4 con la collaborazione di: D. Garuti3, D. Ciavatta3, M. Ponton4 & F. Podda4 Analisi micropaleontologiche: M.C. Perri1 & C. Spalletta1 (conodonti), M. Pasini5 (fusulinidi) Analisi macropaleontologiche: M.A. Conti6 (ichnologia dei vertebrati), P. Mietto7 (ammonoidi) Sezioni stratigrafiche, disegni e foto: C. Venturini1 1 Dipartimento di Scienze della Terra e Geologico-Ambientali - Università di Bologna 2 Dipartimento di Scienze - Università di Chieti e Pescara 3 Consulente Università di Bologna 4 Dipartimento di Scienze Geologiche, Ambientali e Marine - Università di Trieste 8 Dipartimento di Scienze della Terra - Università di Firenze 6 Dipartimento di Scienze della Terra - Università La Sapienza - Roma 7 Dipartimento di Geologia, Paleontologia e Geofisica - Università di Padova UNIVERSITÀ DI BOLOGNA Ente realizzatore Dipartimento di Scienze della Terra e Geologico-Ambientali Direttore del Dipartimento Difesa del Suolo - Servizio Geologico d’Italia: L. Serva Responsabile del Progetto CARG per il Dipartimento Difesa del Suolo - Servizio Geologico d’Italia: F. Galluzzo Responsabile del Progetto CARG per l’Università di Bologna: G.B. Vai PER IL DI P ARTIMENTO DIFESA D EL SUOLO - SERVIZIO GEOLO G ICO D’ITALIA Revisione scientifica M. Pantaloni (coord.), M.L. Pampaloni, R. Graciotti Coordinamento cartografico D. Tacchia (coordinatore), F. Pilato Revisione informatizzazione dei dati geologici D. Delogu (coord.), L. Battaglini, M.C. Giovagnoli, R. Ventura Coordinamento editoriale e allestimento per la stampa M. Cosci, F. -
SARS-Cov-2 Spike Opening Dynamics and Energetics Reveal the Individual Roles of Glycans and Their Collective Impact
bioRxiv preprint doi: https://doi.org/10.1101/2021.08.12.456168; this version posted August 13, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. SARS-CoV-2 spike opening dynamics and energetics reveal the individual roles of glycans and their collective impact Yui Tik Pang,y,z Atanu Acharya,y,z Diane L. Lynch,y Anna Pavlova,y and James C. Gumbart∗,y ySchool of Physics, Georgia Institute of Technology, Atlanta, GA 30332 zContributed equally to this work E-mail: [email protected] 1 bioRxiv preprint doi: https://doi.org/10.1101/2021.08.12.456168; this version posted August 13, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Abstract The trimeric spike (S) glycoprotein, which protrudes from the SARS-CoV-2 viral envelope, is responsible for binding to human ACE2 receptors. The binding process is initiated when the receptor binding domain (RBD) of at least one protomer switches from a “down” (closed) to an “up” (open) state. Here, we used molecular dynamics simulations and two-dimensional replica exchange umbrella sampling calculations to investigate the transition between the two S-protein conformations with and without glycosylation. We show that the glycosylated spike has a higher barrier to opening than the non-glycosylated one with comparable populations of the down and up states. In contrast, we observed that the up conformation is favored without glycans. -
Curiosity, Un Premier Point Deux Semaines Après L'arrivée Sur Mars
1/8 Curiosity, un premier point deux semaines après l'arrivée sur Mars 19/08/2012 Auteur(s) : Pierre Thomas Laboratoire de Géologie de Lyon / ENS Lyon Publié par : Olivier Dequincey Résumé Quelques images du robot Curiosity et premiers objectifs de la mission Mars Science Laboratory. Le 6 août à 7h31 (heure française), le robot Curiosity s'est posé avec succès sur Mars. Cela fait maintenant deux semaines que cet évènement a eu lieu, et il est temps de faire un premier point. Source - © 2012 NASA/Bill Ingalls Figure 1. Explosion de joie de l'équipe de Mars Science Laboratory à l'annonce du succès de l'atterrissage de Curiosity. Mission réussie au Jet Propulsion Laboratory. Vous pouvez avoir une idée (1) du déroulement de l'atterrissage qui s'est déroulé comme prévu, (2) de la géologie du cratère Gale, site d'atterrissage telle qu'elle a pu être déterminée depuis l'orbite et (3) de l'équipement scientifique du rover en (re)consultant les diaporamas présentant la mission Mars Science Laboratory proposés avant l'arrivée sur Mars de Curiosity. Pour suivre vous-même l'activité du rover dans les années qui viennent, la NASA propose un site dédié à la mission Mars Science Laboratory (MSL) et à Curiosity. Qu'a fait le robot depuis son atterrissage ? Son principal travail depuis le 6 août a été de faire un check-up complet de tous ses équipements techniques et scientifiques. Aux dernières nouvelles, tout va bien. Les seuls "résultats scientifiques" actuels sont des images : (1) images prises depuis l'orbite par la sonde Mars Reconnaissance Orbiter (MRO), aussi bien images de la descente qu'images du site d'atterrissage, et (2) images et film pris pendant la descente et au sol par les 17 caméras de Curiosity. -
« Histoire Du Chemin De Fer Sucrier De Beauport, 1863-1990 » Philippe Mioche
Document généré le 27 sept. 2021 03:06 Bulletin de la Société d'Histoire de la Guadeloupe « Histoire du chemin de fer sucrier de Beauport, 1863-1990 » Philippe Mioche Numéro 165, mai–août 2013 URI : https://id.erudit.org/iderudit/1020643ar DOI : https://doi.org/10.7202/1020643ar Aller au sommaire du numéro Éditeur(s) Société d'Histoire de la Guadeloupe ISSN 0583-8266 (imprimé) 2276-1993 (numérique) Découvrir la revue Citer cet article Mioche, P. (2013). « Histoire du chemin de fer sucrier de Beauport, 1863-1990 ». Bulletin de la Société d'Histoire de la Guadeloupe, (165), 3–73. https://doi.org/10.7202/1020643ar Tous droits réservés © Société d'Histoire de la Guadeloupe, 2013 Ce document est protégé par la loi sur le droit d’auteur. L’utilisation des services d’Érudit (y compris la reproduction) est assujettie à sa politique d’utilisation que vous pouvez consulter en ligne. https://apropos.erudit.org/fr/usagers/politique-dutilisation/ Cet article est diffusé et préservé par Érudit. Érudit est un consortium interuniversitaire sans but lucratif composé de l’Université de Montréal, l’Université Laval et l’Université du Québec à Montréal. Il a pour mission la promotion et la valorisation de la recherche. https://www.erudit.org/fr/ «∞∞Histoire du chemin de fer sucrier de Beauport, 1863-1990∞∞» Philippe MIOCHE1 L’objet de cette étude est l’histoire du chemin de fer sucrier de Beau- port de la création de l’usine centrale en 1863 à la fermeture du site en 1990. Nous nous sommes attachés à répondre à quelques questions simples. -
Sexual Abuse of Women in United States Prisons: a Modern Corollary of Slavery
Page 1 1 of 1 DOCUMENT Copyright (c) 2006 Fordham University School of Law Fordham Urban Law Journal January, 2006 33 Fordham Urb. L.J. 571 LENGTH: 12935 words SPECIAL FEATURE: WOMEN AS PERPETRATORS OF CRIME: SEXUAL ABUSE OF WOMEN IN UNITED STATES PRISONS: A MODERN COROLLARY OF SLAVERY NAME: Brenda V. Smith* BIO: * Brenda V. Smith is a Professor at the Washington College of Law. I would like to thank my colleagues for their helpful suggestions and feedback on this paper. The manuscript of Prof. Pamela Bridgewater and her thoughtful comments were particularly helpful. I would also like to thank my research assistants, Loren Ponds, Sundeep Patel, and Nairi Simonian, who provided key research assistance. SUMMARY: ... I initially began working on this paper in connection with a project that looked at the transatlantic abolition movement in the United States and Europe from 1830 to 1870 with a focus on early feminist efforts. ... This paper addresses the sexual abuse of women in custody as a more contemporary manifestation of slavery. ... Part III will discuss the congruencies and the differences that exist between the sexual abuse of women in custody and slavery. ... Sexual Abuse of Women in Prison and Slavery: Congruent Oppression(s)? Slavery and sexual abuse of women in prison share many congruencies and certainly obvious differences. ... Slavery and the sexual abuse of slaves that occurred as a result of it were legally sanctioned in the United States, while arguably sexual abuse of women in custody is not. ... Thus, a congruency of both sexual abuse of women in prison and women in slavery is that sexual abuse was and is used as a tool of oppression. -
Curiosity: Results from the Mars Science Laboratory
John_Klein area NASA/JPL-Caltech/MSSS Results from the Horton Newsom MSL Science Team Mars Science Laboratory 7/28/2015 Acknowledgements There are more than 250 scientists (and untold engineers) working on the Mars Science Laboratory mission… The UNM team - Horton Newsom, Ines Belgacem, Ryan Jackson, Zach Gallegos, Beth Ha, Penny King (now ANU), Nina Lanza (now LANL), Ann Ollila, Suzi Gordon (now LANL), Jeff Berger (now Guelph), Josh Williams (now Western Washington), Amy Williams (now UC Davis) , with Wolf Elston, Anya Rosen-Gooding (now United World College),and other colleagues – and BT2! BT2 –basalt from NM, APXS Calibration target, cut and polished in Northrop Hall Curiosity’s primary scientific goal is to explore and quantitatively assess a local region on Mars’ surface as a potential habitat for life, past or present • Biological potential • Geology and geochemistry • Role of water • Surface radiation NASA/JPL-Caltech Curiosity’s Science Objectives Synergy with other missions and Mars Science • Early missions – Explains Viking Life detection results – presence of perchlorate confirmed • Other missions – Helps interpret results for Opportunity at Endeavor crater (e.g. L. Crumpler, NMMNH) • Martian meteorites – Study of NWA 7034 meteorites at UNM will provide detailed data to help interpret data from Curiosity ChemCam team – Roof of the Observatory of Paris Team meeting – Paris! Transit of Venus – Ceiling of our meeting room in the Observatory of Paris (founded by Louis the 14th). At the test-bed during Operational Readiness Test in March Wheel Base: 2.8 m Height of Deck: 1.1 m Ground Clearance: 0.66 m Height of Mast: 2.2 m Mass: 900 kg The Target – Gale Crater Martian Landing Sites PHOENIX VIKING 2 VIKING 1 PATHFINDER OPPORTUNITY Curiosity SPIRIT A field of approximately 54 different landing sites was ultimately narrowed down to Gale Crater http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA15958 NASA/JPL-Caltech NASA/JPL-Caltech/ESA/DLR/FU Berlin/MSSS Target: Gale Crater and Mount Sharp (5.5 km, 18,000 ft high) Launch Nov. -
Planets Solar System Paper Contents
Planets Solar system paper Contents 1 Jupiter 1 1.1 Structure ............................................... 1 1.1.1 Composition ......................................... 1 1.1.2 Mass and size ......................................... 2 1.1.3 Internal structure ....................................... 2 1.2 Atmosphere .............................................. 3 1.2.1 Cloud layers ......................................... 3 1.2.2 Great Red Spot and other vortices .............................. 4 1.3 Planetary rings ............................................ 4 1.4 Magnetosphere ............................................ 5 1.5 Orbit and rotation ........................................... 5 1.6 Observation .............................................. 6 1.7 Research and exploration ....................................... 6 1.7.1 Pre-telescopic research .................................... 6 1.7.2 Ground-based telescope research ............................... 7 1.7.3 Radiotelescope research ................................... 8 1.7.4 Exploration with space probes ................................ 8 1.8 Moons ................................................. 9 1.8.1 Galilean moons ........................................ 10 1.8.2 Classification of moons .................................... 10 1.9 Interaction with the Solar System ................................... 10 1.9.1 Impacts ............................................ 11 1.10 Possibility of life ........................................... 12 1.11 Mythology ............................................. -
Mars Science Laboratory MEPAG October 4, 2012
Mars Science Laboratory MEPAG October 4, 2012 Michael Meyer NOTE ADDED BY JPL WEBMASTER: This content has not been approved or adopted by, NASA, JPL, or the Lead Scientist California Institute of Technology. This document is being made available for information purposes only, and any views and opinions expressed herein do not necessarily state or reflect those of NASA, JPL, or the Mars Exploration Program California Institute of Technology. 1 Reasons To Explore Mars • Many of the key questions in solar system science can be addressed effectively at Mars: • Solar system history • Planetary evolution • Potential for life • Mars provides the opportunity to approach, and possibly answer, origin and evolution of life questions • Clear potential for past and possibly present biological activity • Mars has a well-preserved record of its climate and geologic evolution exposed at the surface • A comparable record of ancient planetary processes, including those possibly leading to the origin of life, exists on no other terrestrial planet, including Earth • Mars is the most accessible place in the solar system where these highest-priority science questions can be addressed A well-executed program has brought us to where the next major step in exploration can be taken Mars Exploration Program An Integrated, Strategic Program 2001 2003 2005 2007 2009 2011 2013 2016 & Beyond MRO Mars Express Mars future Collaboration planning Odyssey MAVEN underway! MSL/Curiosity Spirit & Phoenix Opportunity (completed) 3 Searching for Phyllosilicates on Cape York Pancam sol 3058 Greeley Haven Opportunity has nearly completed its survey of the Cape York region containing CRISM clay signatures, and sol 3058 is ready to perform detailed IDD investigations of candidate targets. -
The Nonhuman Autonomous Space Agency
The Nonhuman Autonomous Space Agency In the summer of 2011, the last Space Shuttle launch took place at Cape Canaveral, Florida. When the Shuttle landed 13 days later, the United States, for the first time in 30 years, no longer operated a vehicle capable of carrying humans into Low Earth Orbit. FRED SCHARMEN A few miles from Cape Canaveral, in places like Blue Springs State Park, Florida’s Morgan State University endangered population of manatees takes shelter in the warm spring water that rises through the state’s porous limestone geology. Manatees are famous for their somewhat goofy hybridity, which according to stories led some sailors to mistake them for the half human, half fish mermaids of legend. Like the Space Shuttle, itself a hybrid compromise between budgetary, political, and per- formance constraints, manatees become surprisingly graceful when they are embedded and active in the their environment. In ecological science, biologists talk about the concept of the ‘charismatic megafauna’1, a species of animal that is well known and well liked, which serves as a stand-in and focal point for the complexities of the ecosystem in which it lives. Polar bears serve as a good start- ing point for discussions about the effects of climate change. Talking about mana- tees is a way to begin to talk about how we use the landscape of Florida and the Caribbean recreationally, and how to possibly change some careless habits asso- ciated with that use. MASCOTS AND MEGAFAUNA With the absence of the Space Shuttle as a recognizable icon, the whole enter- prise of space exploration now has a unique problem, it no longer has a mascot.