-
The mineral tetrahedrite Cu$_{12}$Sb$_{4}$S$_{13}$ exhibits a first-order metal--insulator transition (MIT) at $T_{\rm MI}$ = 85 K and ambient pressure. We measured the $^{63}$Cu-NMR at ambient pressure and the resistivity and magnetic susceptibility at high p…
arxiv
Shunsaku Kitagawa, Taishi Sekiya, Shingo Araki, Tatsuo C. Kobayashi 等
2015-08-17T06:29:26Z
置信度 0.78
cond-mat.str-el
-
Most recent person re-identification approaches are based on the use of deep convolutional neural networks (CNNs). These networks, although effective in multiple tasks such as classification or object detection, tend to focus on the most discriminative part of…
arxiv
Abdallah Benzine, Mohamed El Amine Seddik, Julien Desmarais
2021-02-18T13:30:23Z
置信度 0.78
cs.CV
-
Text-to-image diffusion models have been demonstrated with undesired generation due to unfiltered large-scale training data, such as sexual images and copyrights, necessitating the erasure of undesired concepts. Most existing methods focus on modifying the gen…
arxiv
Zheling Meng, Bo Peng, Xiaochuan Jin, Yue Jiang 等
2024-09-26T09:48:24Z
置信度 0.78
cs.CV
-
A continuing frustration for origin of life scientists is that abiotic and, by extension, pre-biotic attempts to develop self-sustaining, evolving molecular systems tend to produce more dead-end substances than macromolecular products with the necessary potent…
arxiv
Rowena Ball, John Brindley
2025-04-19T22:59:04Z
置信度 0.78
q-bio.MN
-
In this work we present the homogenization of a reaction-diffusion model that includes an evolving microstructure. Such type of problems model, for example, mineral dissolution and precipitation in a porous medium. Hence, we are dealing with a multi-scale prob…
arxiv
Markus Gahn, Iuliu Sorin Pop
2022-05-06T08:54:29Z
置信度 0.78
math.AP
-
Using state-of-the-art techniques in computer vision, we analyze one million satellite images covering 12% of the African continent between 1984 and 2019 to track local development around 1,658 mineral deposits. We use stacked event studies and difference-in-d…
arxiv
Sandro Provenzano, Hannah Bull
2021-11-10T16:36:29Z
置信度 0.78
econ.GN
-
Abstract The importance of impact cratering on terrestrial planets is obvious from the abundance of craters on their surfaces. On Earth, active geological processes rapidly obliterate the cratering record. To date only about 170 impact structures have been rec…
openalex
Christian Koeberl
2002-09-24
置信度 0.72
PetrographyCoesiteGeologyImpact craterMeteorite
-
including the US Environmental Protection Agency, Natural Resources Conservation Service, National Oceanic
openalex
S.L. Neitsch, J. G. Arnold, James R. Kiniry, Jeffery Williams
2011-09-01
置信度 0.72
DocumentationEnvironmental scienceComputer scienceHydrology (agriculture)Geology
-
Newly found white stony cosmic spherules and extraterrestrial fragments from deep-sea sediments are described. Together with ordinary black spherules, these rarely occurring white spherules are used in the argument that most spherules originate in asteroidal c…
openalex
David Parkin, R. A. L. Sullivan, R.K. Bull
1983-11-01
置信度 0.72
AstrobiologyGeologyEarth (classical element)Extraterrestrial lifeAsteroid
-
Abstract Microbialites comprise the mineralized record of early life on Earth and preserve a spectrum of fabrics that reflect complex physical, chemical, and biological interactions. The relatively rarity of microbialites in modern environments, however, chall…
openalex
Fernando J. Gómez, Linda C. Kah, Julie K. Bartley, Ricardo A. Astini
2014-06-01
置信度 0.72
CarbonateGeologyPrecipitationAltitude (triangle)Effects of high altitude on humans
-
Merrillite, also known as “whitlockite„ , is one of the main phosphate minerals, along with apatite, that occur in lunar rocks, martian meteorites, and in many other groups of meteorites. Significant structural differences between terrestrial whitlockite and l…
openalex
B. Jolliff, John M. Hughes, John J. Freeman, R. A. Zeigler
2006-10-01
置信度 0.72
WhitlockiteMeteoriteMetamictizationAstrobiologyParent body
-
The Younger Dryas impact hypothesis posits that a cosmic impact across much of the Northern Hemisphere deposited the Younger Dryas boundary (YDB) layer, containing peak abundances in a variable assemblage of proxies, including magnetic and glassy impact-relate…
pubmed
James P. Kennett, Douglas J. Kennett, Brendan J. Culleton, J. Emili Aura Tortosa 等
2015 Aug 11
置信度 0.82
Younger DryasBayesian probabilityBoundary (topology)GeologyGeography
-
O) attributed to solar wind implantation on the uppermost surface of olivine, plagioclase, and pyroxene grains from Chang'E-5 samples. The results of spectral and microstructural analyses indicate that solar wind-derived water is affected by exposure time, cry…
openalex
Chuanjiao Zhou, Hong Tang, Xiongyao Li, Xiaojia Zeng 等
2022-09-10
置信度 0.72
PyroxenePlagioclaseSoil waterGeologyWater content
-
Abstract We investigated the khatyrkite–cupalite holotype sample, 1.2 × 0.5 mm across. It consists of khatyrkite (Cu,Zn)Al2, cupalite (Cu,Zn)Al, and interstitial material with approximate composition (Zn,Cu)Al3. All mineral phases of the holotype sample contai…
openalex
M. A. Ivanova, C. A. Lorenz, S. E. Borisovskiy, А. А. Бурмистров 等
2017-02-14
置信度 0.72
MeteoriteHolotypeMineralGeologyMineralogy
-
openalex
R. C. Reedy
1987-11-01
置信度 0.72
Cosmogenic nuclideNuclideMeteoriteExtraterrestrial lifeAccelerator mass spectrometry
-
The CM and CI carbonaceous chondrites are typically dominated by phyllosilicates with variable proportions of tochilinite, anhydrous silicates, carbonates, sulfides, sulfates, oxides, and organic compounds. During thermal metamorphism the phyllosilicates dehyd…
openalex
C. W. Haberle, L. A. J. Garvie
2017-08-17
置信度 0.72
PortlanditeCalciteEnstatiteGeologyOlivine
-
The formation of carbohydrates represents an essential step to provide building blocks and a source of chemical energy in several models for the emergence of life. Formaldehyde, glycolaldehyde and a basic catalyst are the initial components forming a variety o…
openalex
Maren Haas, Saskia Lamour, Sarah Babette Christ, Oliver Trapp
2020-10-16
置信度 0.72
GlycolaldehydeChemistryMonosaccharideCatalysisAqueous solution
-
openalex
Julian A. Pearce, Richard E. Ernst, D.W. Peate, Chris Rogers
2021-03-09
置信度 0.72
GeologyIgneous rockGeochemistryLarge igneous provinceMining engineering
-
openalex
Amber Jie Yu, Xiaoju Lin, Jianxi Zhu, Hongping He 等
2023-10-20
置信度 0.72
IlliteKaoliniteClay mineralsVermiculiteAdsorption
-
Terrestrial and extraterrestrial rocks exhibit significant variations in their mass-dependent Ti isotopic compositions, with basalts being isotopically lighter than evolved lithologies. The observed trend from light to heavy Ti isotopic compositions from more …
openalex
Nicolas D. Greber, Thomas Pettke, Nicolas Vilela, Pierre Lanari 等
2021-05-03
置信度 0.72
GeologyFractional crystallization (geology)GeochemistryBasaltRhyolite
-
openalex
M. Maurette
1998-10-01
置信度 0.72
MeteoriteAstrobiologyChondriteAbiogenesisInterplanetary dust cloud
-
Research Article| December 01, 2002 Mineral biosignatures in evaporites: Presence of rosickyite in an endoevaporitic microbial community from Death Valley, California Susanne Douglas; Susanne Douglas 1California Institute of Technology, Jet Propulsion Laborato…
openalex
Susanne Douglas, Heixong Yang
2002-01-01
置信度 0.72
CitationMineral explorationGeologistJet propulsionGeology
-
openalex
Mickaël Baqué, Jean‐Pierre de Vera, Petra Rettberg, Daniela Billi
2013-06-11
置信度 0.72
MartianEXPOSEAstrobiologyAtmosphere (unit)Space environment
-
Abstract Synthetic geomicrobiology is a potentially new branch of synthetic biology that seeks to achieve improvements in microbe–mineral interactions for practical applications. In this paper, laboratory and field data are provided on three geomicrobiology ch…
openalex
Charles S. Cockell
2011-05-27
置信度 0.72
GeomicrobiologyRegolithAstrobiologyWeatheringSynthetic biology
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Abstract The future robotic exploration missions to Mars—European Space Agency/Roscosmos's ExoMars2020 and National Aeronautics and Space Administration's Mars2020 rovers—will search for signs of extant or extinct life using, among other instruments, Raman spe…
openalex
Mickaël Baqué, Franziska Hanke, Ute Böttger, Thomas Leya 等
2018-07-23
置信度 0.72
MartianRaman spectroscopyExploration of MarsMars Exploration ProgramLife on Mars
-
In the past few decades, chemosynthetic ecosystems at deep-sea hydrothermal vents have received attention as plausible analogues to the early ecosystems of Earth, as well as to extraterrestrial ecosystems. These ecosystems are sustained by chemical energy obta…
openalex
Kentaro Nakamura, Ken Takai
2014-01-01
置信度 0.72
Hydrothermal circulationChemosynthesisHydrothermal ventSeafloor spreadingGeology
-
We report the first in situ observation of hollow organic globules in any extraterrestrial material using the Tagish Lake carbonaceous chondrite. Data from analytical transmission electron microscopy, Raman and micro-Fourier-transform infrared (FTIR) spectrosc…
openalex
K. Nakamura, M. E. Zolensky, Satoshi Tomita, Satοru Nakashima 等
2002-07-01
置信度 0.72
MeteoriteChondriteAbiogenesisCarbonaceous chondriteParent body
-
Abstract For the last four decades space exploration missions have searched for molecular life on planetary surfaces beyond Earth. Often pyrolysis gas chromatography mass spectrometry has been used as payload on such space exploration missions. These instrumen…
openalex
N. F. W. Ligterink, Valentine Grimaudo, Pavel Moreno‐García, Rustam Lukmanov 等
2020-06-15
置信度 0.72
Mass spectrometryAstrobiologyExtraterrestrial lifeBiomoleculeSpace exploration
-
ABSTRACT Building up a lunar settlement is the ultimate aim of lunar exploitation. Yet, limited fuel and oxygen supplies restrict human survival on the Moon. Herein, we demonstrate the in situ resource utilization of lunar soil for extraterrestrial fuel and ox…
europepmc
Yuan Zhong, Jingxiang Low, Qing Zhu, Yawen Jiang 等
2022-09-23
置信度 0.80
Extraterrestrial lifeEnvironmental scienceAstrobiologyIn situEnvironmental chemistry
-
By characterizing organic molecules of extra-terrestrial origin included in the Soltmany meteorite, we also present the first results of the non-targeted chemical analysis of the methanol soluble organic matter present in an L6 ordinary chondrite. The structur…
openalex
Philippe Schmitt‐Kopplin, Mourad Harir, Basem Kanawati, Dimitrios Tziozis 等
2012-01-01
置信度 0.72
ChondriteMeteoriteOrdinary chondriteOrganic matterChemistry
-
Tramway Ridge, located near the summit of Mount Erebus in Antarctica, is probably the most remote geothermal soil habitat on Earth. Steam fumaroles maintain moist, hot soil environments creating extreme local physicochemical differentials. In this study a cult…
openalex
Rochelle M. Soo, Susanna A. Wood, Joseph J. Grzymski, Ian R. McDonald 等
2009-03-01
置信度 0.72
BiologyCrenarchaeotaArchaeaLibraryEcology
-
openalex
J. R. Ashworth, R. Hutchison
1975-08-01
置信度 0.72
MeteoriteAchondriteChondriteAstrobiologyGeology
-
Abstract The availability of bioessential elements for “life as we know it”, such as phosphorus (P) or possibly molybdenum (Mo), is expected to restrict the biological productivity of extraterrestrial biospheres. Here, we consider worlds with subsurface oceans…
openalex
Manasvi Lingam, Abraham Loeb
2018-09-12
置信度 0.72
EnceladusExtraterrestrial lifeAstrobiologyAbiogenesisHabitability
-
openalex
I‐Ming Chou, Alian Wang
2017-07-03
置信度 0.72
Raman spectroscopyMars Exploration ProgramAstrobiologyMartianEarth (classical element)
-
openalex
Lawrence M. Anovitz, Adam J. Rondinone, Lindsay Sochalski-Kolbus, Jörgen Rosenqvist 等
2017-01-18
置信度 0.72
ForsteriteEnstatiteSilicateChemical engineeringChemistry
-
openalex
Deb P. Jaisi, Ruth E. Blake, Ravi Kukkadapu
2009-11-16
置信度 0.72
FerrihydritePhosphateSorptionPhosphate mineralsChemistry
-
openalex
Frans J. M. Rietmeijer, Joseph A. Nuth
1998-01-01
置信度 0.72
MeteoroidAstrobiologyMeteoriteParent bodyAtmosphere (unit)
-
openalex
N. R. Khisina, Richard Wirth, А. А. Бурмистров, A. A. Shiryaev 等
2018-07-01
置信度 0.72
MeteoriteChondriteAstrobiologySideriteMineral
-
openalex
N. Z. Boctor, C. M. O'd. Alexander, Jianhua Wang, E. H. Hauri
2003-10-01
置信度 0.72
MeteoriteMartianGeologyCarbonaceous chondriteAstrobiology
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Abstract Chemical weathering is an integral part of both the rock and carbon cycles and is being affected by changes in land use, particularly as a result of agricultural practices such as tilling, mineral fertilization, or liming to adjust soil pH. These huma…
openalex
Jens Hartmann, A. Joshua West, Phil Renforth, Peter Köhler 等
2013-04-01
置信度 0.72
AlkalinityWeatheringEnvironmental scienceCarbon dioxideOcean acidification
-
openalex
Harald G. Dill
2020-01-09
置信度 0.72
GeologyGeochemistryGlauconiteTourmalineSedimentary depositional environment
-
openalex
Dorothy Z. Oehler, F. Robert, Malcolm R. Walter, Kenichiro Sugitani 等
2009-01-30
置信度 0.72
Carbon fibersArcheanNitrogenSulfurTotal organic carbon
-
The emergence of life on Earth could have benefitted from an extraterrestrial source of amino acids. Yet, the origin of these amino acids is still debated because they may have formed prior to the solar nebula or inside the parent body of meteorites. Here, we …
openalex
Vassilissa Vinogradoff, Laurent Rémusat, Hannah L. McLain, José C. Aponte 等
2020-07-17
置信度 0.72
AbiogenesisAmino acidMeteoriteExtraterrestrial lifeAstrobiology
-
The late Eocene may have been a period with an enhanced flux of extraterrestrial matter to Earth related either to a comet or an asteroid shower. The evidence comes from two very large and several medium-sized impact craters, at least two microtektite-microkry…
openalex
Birger Schmitz, Anders Cronholm, Alessandro Montanari
2009-01-01
置信度 0.72
GeologyChromiteExtraterrestrial lifeMeteoriteCretaceous
-
tag=1 data=Gosses Bluff - a latest Jurassic impact structure, central Australia. Part 1: geological structure, stratigraphy, and origin. by D.J. Milton, A.Y. Glikson & R. Brett
tag=2 data=Milton, D.J.%Glikson, A.Y.%Brett, R.
tag=3 data=AGSO Journal of Au…
openalex
D. J. Milton, Andrew Y. Glikson, R. Brett
1996-01-01
置信度 0.72
StratigraphyGeologyBluffImpact structurePaleontology
-
Variation in the spectral response of silicates in the thermal infrared (TIR) from 8 to 12 μm is the foundation for potentially important applications in the lithologic characterization of terrestrial and extraterrestrial surfaces. The purpose of this study is…
openalex
L. S. Walter, John W. Salisbury
1989-07-10
置信度 0.72
Igneous rockMineralogySilicateCharacterization (materials science)Spectral line
-
Our nanomineralogy investigation of the Khatyrka CV3 carbonaceous chondrite has revealed three new alloy minerals—hollisterite (IMA 2016-034; Al 3 Fe), kryachkoite [IMA 2016-062; (Al,Cu) 6 (Fe,Cu)], and stolperite (IMA 2016-033; AlCu)—in section 126A of USNM 7…
openalex
Chi Ma, Chaney Lin, Luca Bindi, Paul J. Steinhardt
2017-03-01
置信度 0.72
MeteoriteMonoclinic crystal systemCarbonaceous chondriteOrthorhombic crystal systemChondrite
-
openalex
Ch. Helling, M. Jardine, D. A. Diver, Sören Witte
2012-07-14
置信度 0.72
PlanetSolar SystemPhysicsGas giantBrown dwarf
-
The Stardust spacecraft collected thousands of particles from comet 81P/Wild 2 and returned them to Earth for laboratory study. The preliminary examination of these samples shows that the nonvolatile portion of the comet is an unequilibrated assortment of mate…
openalex
D. E. Brownlee, P. Tsou, J. Aléon, C. M. O'd. Alexander 等
2006-12-14
置信度 0.72
CometFormation and evolution of the Solar SystemSolar SystemAstrobiologySilicate
-
Abstract Evaluating the water‐soluble organic composition of carbonaceous chondrites is key to understanding the inventory of organic matter present at the origins of the solar system and the subsequent processes that took place inside asteroid parent bodies. …
openalex
José C. Aponte, Hannah L. McLain, Danielle N. Simkus, Jamie E. Elsila 等
2020-06-22
置信度 0.72
Murchison meteoriteChondriteMeteoriteCarbonaceous chondriteParent body
-
The first year results of a multi-year study of processing extraterrestrial materials for use in space are summarized. Theoretically, there are potential major advantages to be derived from the use of such materials for future space endeavors. The types of kno…
openalex
W. H. Steurer
1982-04-15
置信度 0.72
AstrobiologyMars Exploration ProgramExtraterrestrial lifeAsteroidSolar System
-
openalex
G. Kletetschka, Michael D. Fuller, T. Kohout, P. J. Wasilewski 等
2006-02-20
置信度 0.72
Thermoremanent magnetizationDemagnetizing fieldRemanenceMagnetiteEarth's magnetic field
-
openalex
Klaus Keil
2012-08-04
置信度 0.72
GeologyGeochemistryMaficDiopsideAugite
-
Performance studies of a microscope‐camera system (MCS) and a laser ablation/ionisation mass spectrometer (LIMS) instrument (referred to here as a laser mass spectrometer or LMS) are presented. These two instruments were designed independently for in situ anal…
openalex
Marek Tulej, Andreas Riedo, M. B. Neuland, Stefan Meyer 等
2014-11-10
置信度 0.72
Mass spectrometryAnalytical Chemistry (journal)Laser ablationIn situMicroscope
-
In the eastern equatorial Indian Ocean, the flux of extraterrestrial 3He, a proxy of interplanetary dust particles (IDPs), has been relatively constant over the past 200 ka. The flux is equal to (1.1±0.4)×10−12 cm3 STP cm−2 ka−1, a value obtained using the xs2…
openalex
Franco Marcantonio, Karl K. Turekian, Sean Higgins, Robert F. Anderson 等
1999-07-01
置信度 0.72
Terrigenous sedimentExtraterrestrial lifeGeologyRadiogenic nuclideMars Exploration Program
-
openalex
Paul Aharon, Manfred Schidlowski, Indra Bir Singh
1987-06-01
置信度 0.72
PrecambrianIsotopes of carbonGeologyPaleontologySedimentary rock
-
openalex
Lev Tarasov, A. F. Kudryashova, A. B. Ivanov, A. A. Ulyanov 等
1987-11-01
置信度 0.72
ChondriteGeologyTrace elementMeteoriteBasalt
-
We have developed a diode laser (25 W, 808 nm) system for He extraction from minerals for (U‐Th)/He chronometry. The laser beam is delivered via a 600 μm fiber cable and focused using a binocular microscope. Temperatures necessary for He release from apatite (…
openalex
J. Foeken, Finlay M. Stuart, Katherine J. Dobson, Cristina Persano 等
2006-04-01
置信度 0.72
ZirconApatiteGeologyMineralogyBiotite
-
openalex
G. Matrajt, Didier Blanot
2004-03-01
置信度 0.72
FerrihydriteAdsorptionNanoporousAmino acidChemistry
-
openalex
A. H. Peslier, Maria Schönbächler, H. Busemann, Shun‐ichiro Karato
2017-08-09
置信度 0.72
Mantle (geology)GeologyHydrospherePlanetary differentiationEarth's internal heat budget
-
The ca 252 Ma Permian–Triassic boundary (PTB) represents the most severe mass extinction event of the Phanerozoic, with the disappearance of ~ 80% of marine invertebrate species. Large-scale eruption of the Siberian Traps is the commonly favored cause, althoug…
openalex
Tetsuji Onoue, Naoto Takahata, Mitsutaka Miura, Honami Sato 等
2019-02-13
置信度 0.72
Extinction eventGeologyPermianPaleontologyPermian–Triassic extinction event
-
openalex
Richard W. Court, Alexander O. Baki, M. R. Sims, David C. Cullen 等
2010-07-07
置信度 0.72
DichloromethaneSolventChemistryMethanolDissolution
-
Helictites--an enigmatic type of mineral structure occurring in some caves--differ from classical speleothems as they develop with orientations that defy gravity. While theories for helictite formation have been forwarded, their genesis remains equivocal. Here…
openalex
Nicola Tisato, Stefano F. F. Torriani, Sylvain Monteux, Francesco Sauro 等
2015-10-29
置信度 0.72
MineralMediationGeologyComputational biologyComputer science
-
Abstract This study explores the long‐duration (0.8–2.3 Ma), time‐averaged micrometeorite flux (mass and size distribution) reaching Earth, as recorded by the Transantarctic Mountains (TAM) micrometeorite collection. We investigate a single sediment trap (TAM6…
openalex
Martin D. Suttle, L. Folco
2020-01-30
置信度 0.72
Flux (metallurgy)SedimentAstrophysicsRange (aeronautics)Interplanetary dust cloud
-
openalex
Éric Robin, D. Boclet, Ph. Bonté, L. Froget 等
1991-12-01
置信度 0.72
CretaceousGeologyPaleontologyGeochemistry
-
Determining compositional trends among individual minerals is key to understanding the thermodynamic conditions under which they formed and altered, and is also essential to maximizing the scientific value of small extraterrestrial samples, including returned …
europepmc
D. L. Schrader, J. Davidson, T. J. McCoy, T. J. Zega 等
2021
置信度 0.80
ChondriteTroilitePyrrhotiteChondruleMeteorite
-
This chapter contains sections titled: Introduction Formation and development of the post-impact thermal field Composition and evolution of the hydrothermal fluids and mineralization Implications for extraterrestrial impacts and microbial life References
openalex
Kalle Kirsimäe, G. R. Osinski
2012-10-25
置信度 0.72
Hydrothermal circulationExtraterrestrial lifeMineralization (soil science)AbiogenesisHydrothermal vent
-
Abstract Determining the hydrogen isotopic compositions and H2O contents of meteorites and their components is important for addressing key cosmochemical questions about the abundance and source(s) of water in planetary bodies. However, deconvolving the effect…
openalex
A. Stephant, L. A. J. Garvie, P. Mane, R. L. Hervig 等
2018-08-13
置信度 0.72
MeteoriteAstrobiologyAchondriteWeatheringMartian
-
Abstract– The identification of adenine by surface enhanced Raman scattering (SERS) on different mineral phases of a Martian meteorite Dar al Gani (DaG) 670 has been adopted as a test to verify the capability of this technique to detect trace amounts of organi…
openalex
Stefano Caporali, Vanni Moggi Cecchi, Maurizio Muniz‐Miranda, Marco Pagliai 等
2012-05-01
置信度 0.72
MeteoriteMartianRaman spectroscopyMars Exploration ProgramAstrobiology
-
openalex
Xin-Miao Zhao, Zhaofeng Zhang, Shichun Huang, Yufei Liu 等
2017-03-31
置信度 0.72
Mantle (geology)GeologyGeochemistryPeridotiteSilicate
-
The prebiotic relevance of mineral struvite, MgNH4PO4·6H2O, was studied experimentally as a phosphorylating reagent and, theoretically, to understand the geochemical requirements for its formation. The effectiveness of phosphorylation by the phosphate mineral,…
openalex
Maheen Gull, Matthew A. Pasek
2013-04-29
置信度 0.72
StruvitePhosphateChemistryApatitePrecipitation
-
Although critical to atmospheric modeling of stratospheric ozone depletion, selective heterogeneous nuclei that promote the formation of Type Ia polar stratospheric clouds (PSCs) are largely unknown. While mineral particles are known to be good ice nuclei, it …
pubmed
C. D. Hatch, R. V. Gough, O. B. Toon, Margaret A. Tolbert 等
2007-12-04
置信度 0.82
NucleationKaoliniteMontmorilloniteChemistryNitric acid
-
Whitlockite and merrillite are two Ca-phosphate minerals found in terrestrial and planetary igneous rocks, sometimes coexisting with apatite. Whitlockite has essential structural hydrogen, and merrillite is devoid of hydrogen. Whitlockite components have yet t…
openalex
F. M. McCubbin, C. K. Shearer, P. V. Burger, E. H. Hauri 等
2014-07-01
置信度 0.72
WhitlockiteMeteoriteGeochemistryApatiteGeology
-
Abstract More than 50 samples from a Barents Sea borehole near the Mjolnir Structure (an extraterrestrial impact feature) were used to investigate changes in the clay assemblage associated with the submarine impact. Seismic evidence, the presence of shocked qu…
openalex
Henning Dypvik, R. E. Ferrell
1998-03-01
置信度 0.72
GeologyClay mineralsIlliteImpact craterGeochemistry
-
In the context of future exposure missions in Low Earth Orbit and possibly on the Moon, two desert strains of the cyanobacterium Chroococcidiopsis, strains CCMEE 029 and 057, mixed or not with a lunar mineral analogue, were exposed to fractionated fluencies of…
pubmed
Mickaël Baqué, Cyprien Verseux, Elke Rabbow, Jean‐Pierre de Vera 等
2014 Sep
置信度 0.82
AstrobiologyMars Exploration ProgramContext (archaeology)ChemistryMartian
-
openalex
Kazuya Okada
2022-05-19
置信度 0.72
Mineral explorationGNSS applicationsPerspective (graphical)Emerging technologiesComputer science
-
It has been proposed that fragments of an asteroid or comet impacted Earth, deposited silica- and iron-rich microspherules and other proxies across several continents, and triggered the Younger Dryas cooling episode 12,900 years ago. Although many independent …
pubmed
T. E. Bunch, Robert Hermes, A. M. T. Moore, Douglas J. Kennett 等
2012 Jul 10
置信度 0.82
GeologyImpact craterEjectaYounger DryasVolcano
-
openalex
L. Bonal, M. Bourot-Denise, É. Quirico, Gilles Montagnac 等
2006-12-25
置信度 0.72
ChondriteMetamorphic rockAllende meteoritePetrographyChondrule
-
Geoscientists quickly recognized the broad applicability of Raman micro-probe spectroscopy to the Earth and planetary sciences, especially after commercially built microprobe instruments became available in the early 1980s. Raman spectra are sensitive to even …
openalex
Jill Dill Pasteris, Olivier Beyssac
2020-04-01
置信度 0.72
Raman spectroscopyMicroprobeAmorphous solidElectron microprobeAstrobiology
-
openalex
Jianxun Shen, Chuan‐Zhou Liu, Yongxin Pan, Wei Lin
2024-09-27
置信度 0.72
HabitabilityAstrobiologyExtraterrestrial lifeAstronomyPhysics
-
Please note this Table of Contents is from the third edition of Introduction to Geology: Part I: Foundations of Environmental Geology 1: Philosophy and Fundamental Concepts 2: Internal Structure of the Earth and Plate Tectonics 3: Minerals and Rocks Part II: E…
openalex
Edward A. Keller
1999-01-01
置信度 0.72
Earth scienceGeologyNatural (archaeology)Environmental geologyLandslide
-
Alteration zones in the Eastern Desert are promising for minerals and geological resources exploration. Remote sensing and geophysical techniques offer cost-effective tools for identifying new exploration sites. Additionally, their use in mapping potential alt…
europepmc
2024
置信度 0.80
-
Ancient peptides are remnants of early biochemistry that continue to play pivotal roles in current proteins. They are simple molecules yet complex enough to exhibit independent functions, being products of an evolved biochemistry at the interface of life and n…
europepmc
Pedro Mustieles-del-Ser, David Ruano‐Gallego, Vı́ctor Parro
2024
置信度 0.80
ChemistryPolyclonal antibodiesPeptideFolding (DSP implementation)Biochemistry
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Magnetic fields in protoplanetary disks are thought to play a prominent role in the formation of planetary bodies. Acting upon turbulence and angular momentum transport, they may influence the motion of solids and accretion onto the central star. By searching …
europepmc
2024
置信度 0.80
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Baker's yeast is a common microorganism that is well-known for its fermentation activities. The fermentation process naturally produces CO 2 , leading to a gradual increase in internal pressure within sealed environments. Meanwhile, passive pumps are rising in…
europepmc
2026
置信度 0.80
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Compared with typical Earth soil, Martian soil and Mars simulant soils have distinct properties, including pH > 8.0 and high contents of silicates, iron-rich minerals, sulfates, and metal oxides. This unique soil matrix poses a major challenge for extracting m…
europepmc
Han Wang, Agata Pijl, Binbin Liu, G.W.W. Wamelink 等
2024
置信度 0.80
Mars Exploration ProgramExtraction (chemistry)DNA extractionAstrobiologyEnvironmental science
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Obviously, the discussion of different factors that could have contributed to the origin of life and evolution is clear speculation, since there is no way of checking the validity of most of the related hypotheses in practice, as the corresponding events not o…
europepmc
Vladimir N. Uversky
2024
置信度 0.80
Intrinsically disordered proteinsAbiogenesisEvolutionary biologyVariety (cybernetics)Ancestor
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Geodiversity is a topical concept in earth and environmental sciences. Geodiversity information is needed to conserve nature, use ecosystem services and achieve sustainable development goals. Despite the increasing demand for geodiversity data, there exists no…
europepmc
Jan Hjort, A.C. Seijmonsbergen, Julia Kemppinen, Helena Tukiainen 等
2024
置信度 0.80
GeodiversityTaxonomy (biology)Computer scienceBiodiversityBiology
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High Resolution Image Download MS PowerPoint Slide Environmental DNA (eDNA), i.e., DNA found in the environment, can interact with various geochemical surfaces, yet little is known about these interactions. Mineral surfaces may alter the structure, stability, …
europepmc
Eshani Hettiarachchi, Vicki H. Grassian
2024
置信度 0.80
AdsorptionGoethiteChemistryHematiteDNA
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The oxygen isotope ratio 18 O/ 16 O (expressed as a δ 18 O VSMOW value) in marine sedimentary rocks has increased by ~8‰ from the early Paleozoic to modern times. Interpretation of this trend is hindered by ambiguities in the temperature of formation of the ca…
europepmc
2024
置信度 0.80
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Chemistry assigns phosphorus and its most oxidized form, inorganic phosphate, unique roles for propelling bioenergetics and metabolism in all domains of life, possibly since its very origin on prebiotic Earth. For plants, access to the vital mineral nutrient p…
europepmc
Steffen Abel, Christin Naumann
2024
置信度 0.80
BiospherePhosphatePhosphorusAstrobiologyEarth science
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The process of soil genesis unfolds as pioneering microbial communities colonize mineral substrates, enriching them with biomolecules released from bedrock. The resultant intricate surface units emerge from a complex interplay among microbiota and plant commun…
europepmc
Ting Huang, Daniel Carrizo, Laura Sánchez‐García, Qitao Hu 等
2024
置信度 0.80
WeatheringEnvironmental chemistryChemistryEcosystemMass spectrometry
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The sulfur chemistry of (162173) Ryugu particles can be a powerful tracer of molecular cloud chemistry and small body processes, but it has not been well explored. We report identification of organosulfurs and a sulfate grain in two Ryugu particles, A0070 and …
europepmc
2024
置信度 0.80
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Abstract Extraterrestrial minerals on the surface of airless Solar System bodies undergo gradual alteration processes known as space weathering over long periods of time. The signatures of space weathering help us understand the phenomena occurring in the Sola…
europepmc
Yuki Kimura, Takeharu Kato, Satoshi Anada, Ryuji Yoshida 等
2024
置信度 0.80
AsteroidSpace weatheringAstrobiologyMeteoriteWeathering
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This work is mainly concerned with the effect of anthropogenic activities and natural radioactivity due to the presence of highly radioactive black sand spots, factory construction, and shipping, in addition to other activities like agriculture on human beings…
europepmc
2024
置信度 0.80
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Cytosine is an essential chemical molecule in living systems, such as DNA and RNA, it is essential in astrobiology to study how it behaves under probable primitive conditions. We looked at how cytosine broke down in aqueous solutions exposed to high radiation …
europepmc
2024
置信度 0.80
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We demonstrate that the assembly pathway method underlying assembly theory (AT) is an encoding scheme widely used by popular statistical compression algorithms. We show that in all cases (synthetic or natural) AT performs similarly to other simple coding schem…
europepmc
Abicumaran Uthamacumaran, Felipe S. Abrahão, Narsis A. Kiani, Héctor Zenil
2024
置信度 0.80
SalientCoding (social sciences)Computer scienceSimple (philosophy)Statistical analysis
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Abstract The transition from inorganic catalysis through minerals to organic catalysis by enzymes is a necessary step in the emergence of life. Our work is elucidating likely reactions at the earliest moments of Life, prior to the existence of enzymatic cataly…
europepmc
Philippe Diederich, Christian Seitz, Lance R. Buckett, Liesa Salzer 等
2024
置信度 0.80
NickelChemistryCatalysisAcetyleneAbiogenesis
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Large meteorite impacts must have strongly affected the habitability of the early Earth. Rocks of the Archean Eon record at least 16 major impact events, involving bolides larger than 10 km in diameter. These impacts probably had severe, albeit temporary, cons…
europepmc
Nadja Drabon, Andrew H. Knoll, Donald R. Lowe, Stefano M. Bernasconi 等
2024
置信度 0.80
WeatheringGeologyMeteoriteGeochemistryImpact crater
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Nitrogen is a vital element for life on Earth. Its cycling between the surface (atmosphere + crust) and the mantle has a profound influence on the atmosphere and climate. However, our understanding of the origin and evolution of Earth's nitrogen is still incom…
europepmc
Yuan Li
2024
置信度 0.80
Earth (classical element)AstrobiologyEarth scienceGeologyBiology