04121nam 2200709 a 450 991045483020332120200520144314.01-282-13034-X97866121303420-309-13074-3(CKB)1000000000786325(EBL)3378866(SSID)ssj0000106780(PQKBManifestationID)11141536(PQKBTitleCode)TC0000106780(PQKBWorkID)10111672(PQKB)11112441(MiAaPQ)EBC3378866(MiAaPQ)EBC4961439(Au-PeEL)EBL3378866(CaPaEBR)ebr10495466(OCoLC)923284168(Au-PeEL)EBL4961439(CaONFJC)MIL213034(OCoLC)435772850(EXLCZ)99100000000078632520100619d2009 uy 0engurcn|||||||||txtccrAssessment of planetary protection requirements for Mars sample return missions[electronic resource] /National Research Council of the National AcademiesWashington, D.C. National Academies Pressc20091 online resource (91 p.)Description based upon print version of record.0-309-13073-5 Includes bibliographical references.Introduction -- The potential for past or present habitable environments on Mars -- Advances in microbial ecology -- The potential for finding biosignatures in returned Martian samples -- The potential for large-scale effects -- Sample containment and biohazard evaluation -- Sample-receiving facility and program oversight.NASA maintains a planetary protection policy to avoid the forward biological contamination of other worlds by terrestrial organisms, and back biological contamination of Earth from the return of extraterrestrial materials by spaceflight missions. Forward-contamination issues related to Mars missions were addressed in a 2006 National Research Council (NRC) book, Preventing the Forward Contamination of Mars. However, it has been more than 10 years since back-contamination issues were last examined. Driven by a renewed interest in Mars sample return missions, this book reviews, updates, and replaces the planetary protection conclusions and recommendations contained in the NRC's 1997 report Mars Sample Return: Issues and Recommendations. The specific issues addressed in this book include the following: the potential for living entities to be included in samples returned from Mars; scientific investigations that should be conducted to reduce uncertainty in the above assessment; the potential for large-scale effects on Earth's environment by any returned entity released to the environment; criteria for intentional sample release, taking note of current and anticipated regulatory frameworks; and the status of technological measures that could be taken on a mission to prevent the inadvertent release of a returned sample into Earth's biosphere.Space flight to MarsPlanningSpace microbiologyMars surface samplesMicrobial contaminationPreventionMars (Planet)ExplorationElectronic books.Space flight to MarsPlanning.Space microbiology.Mars surface samples.Microbial contaminationPrevention.629.45National Research Council (U.S.).Space Studies Board.National Research Council (U.S.).Division on Engineering and Physical Sciences.National Academies Press (U.S.)National Research Council (U.S.).Committee on the Review of Planetary Protection Requirements for Mars Sample Return Missions.MiAaPQMiAaPQMiAaPQBOOK9910454830203321Assessment of planetary protection requirements for Mars sample return missions2482368UNINA02504nam 2200577 450 991081893240332120180731045342.01-4704-0074-X(CKB)3360000000464681(EBL)3114027(SSID)ssj0000888830(PQKBManifestationID)11465742(PQKBTitleCode)TC0000888830(PQKBWorkID)10875469(PQKB)11528169(MiAaPQ)EBC3114027(RPAM)3468661(PPN)195413806(EXLCZ)99336000000046468120140911h19931993 uy 0engur|n|---|||||txtccrCoarse cohomology and index theory on complete Riemannian manifolds /John RoeProvidence, Rhode Island :American Mathematical Society,1993.©19931 online resource (106 p.)Memoirs of the American Mathematical Society,0065-9266 ;Number 497"July 1993, Volume 104, Number 497 (fourth of 6 numbers)."0-8218-2559-3 Includes bibliographical references.""Contents""; ""Chapter 1. Introduction""; ""Chapter 2. Basic properties of coarse cohomology""; ""2.1. The uniformly bornologous categories""; ""2.2. Definition of coarse theory""; ""2.3. Examples""; ""2.4. Product structure on coarse theory""; ""Chapter 3. Computation of coarse cohomology""; ""3.1. Review of Cech theory""; ""3.2. The main theorem""; ""3.3. Alternative definitions of coarse theory""; ""3.4. When is c an isomorphism?""; ""3.5. Bornotopy""; ""3.6. Examples""; ""Chapter 4. Cyclic cohomology and index theory""; ""4.1. Operator algebras""; ""4.2. The Connes character map""""6.5. Applications to the signature operator""""6.6. Relation with the Novikov conjecture""; ""References""Memoirs of the American Mathematical Society ;Number 497.Riemannian manifoldsHomology theoryIndex theory (Mathematics)Riemannian manifolds.Homology theory.Index theory (Mathematics)516.3/73Roe John1959-1640620MiAaPQMiAaPQMiAaPQBOOK9910818932403321Coarse cohomology and index theory on complete Riemannian manifolds3984243UNINA