Academic literature on the topic 'Primitive Earth'

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Journal articles on the topic "Primitive Earth"

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Otalora, Fermin, and Juan Manuel García Ruiz. "Investigating the primitive Earth through crystals." Acta Crystallographica Section A Foundations and Advances 74, a2 (2018): e251-e251. http://dx.doi.org/10.1107/s2053273318091398.

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Orò, Juan, and Cristiano B. Cosmovici. "Comets and Life on the Primitive Earth." International Astronomical Union Colloquium 161 (January 1997): 97–120. http://dx.doi.org/10.1017/s0252921100014639.

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AbstractComets may have contributed substantial amounts of water, volatiles and organic precursors such as HCN for the synthesis of biochemical compounds on the primitive Earth. This suggestion followed closely the prebiotic synthesis of adenine, purines and amino acids from HCN. Recent studies on the terrestrial heavy noble gases provide evidence that comets are the principal external source of Earth’s volatiles. During the encounter of comet Halley strong jets of CN, C2, C3and NH2were measured from Earth observatories, and by spacecraft mass spectrometry HCN, formaldehyde, adenine and many o
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Guo, Dong, Ziyue Zhang, Jichao Sun, Hui Zhao, Wanguo Hou, and Na Du. "A Fusion–Growth Protocell Model Based on Vesicle Interactions with Pyrite Particles." Molecules 29, no. 11 (2024): 2664. http://dx.doi.org/10.3390/molecules29112664.

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Protocell models play a pivotal role in the exploration of the origin of life. Vesicles are one type of protocell model that have attracted much attention. Simple single-chain amphiphiles (SACs) and organic small molecules (OSMs) possess primitive relevance and were most likely the building blocks of protocells on the early Earth. OSM@SAC vesicles have been considered to be plausible protocell models. Pyrite (FeS2), a mineral with primitive relevance, is ubiquitous in nature and plays a crucial role in the exploration of the origin of life in the mineral–water interface scenario. “How do proto
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Rao, M., J. Eichberg, and J. Oró. "Synthesis of phosphatidylethanolamine under possible primitive earth conditions." Journal of Molecular Evolution 25, no. 1 (1987): 1–6. http://dx.doi.org/10.1007/bf02100033.

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Wong, Carlos, J. Carlos Santiago, Lorena Rodriguez-Paez, Miguel Ibánez, Isabel Baeza, and J. Oró. "Synthesis of putrescine under possible primitive earth conditions." Origins of Life and Evolution of the Biosphere 21, no. 3 (1991): 145–56. http://dx.doi.org/10.1007/bf01809443.

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von Bloh, W., C. Bounama, M. Cuntz, and S. Franck. "Habitability of super-Earths: Gliese 581c & 581d." Proceedings of the International Astronomical Union 3, S249 (2007): 503–6. http://dx.doi.org/10.1017/s1743921308017031.

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AbstractThe unexpected diversity of exoplanets includes a growing number of super-Earth planets, i.e., exoplanets with masses smaller than 10 Earth masses. Unlike the larger exoplanets previously found, these smaller planets are more likely to have similar chemical and mineralogical composition to the Earth. We present a thermal evolution model for super-Earth planets to identify the sources and sinks of atmospheric carbon dioxide. The photosynthesis-sustaining habitable zone (pHZ) is determined by the limits of biological productivity on the planetary surface. We apply our model to calculate
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Imai, Takashi. "Development of Next-Generation Vaccines." Vaccines 10, no. 2 (2022): 274. http://dx.doi.org/10.3390/vaccines10020274.

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Jia, Tony Z., Melina Caudan, and Irena Mamajanov. "Origin of Species before Origin of Life: The Role of Speciation in Chemical Evolution." Life 11, no. 2 (2021): 154. http://dx.doi.org/10.3390/life11020154.

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Speciation, an evolutionary process by which new species form, is ultimately responsible for the incredible biodiversity that we observe on Earth every day. Such biodiversity is one of the critical features which contributes to the survivability of biospheres and modern life. While speciation and biodiversity have been amply studied in organismic evolution and modern life, it has not yet been applied to a great extent to understanding the evolutionary dynamics of primitive life. In particular, one unanswered question is at what point in the history of life did speciation as a phenomenon emerge
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YANAGAWA, Hiroshi, Yoko OGAWA, and Masahiko ITO. "Construction of protocellular structures under simulated primitive earth conditions." NIPPON KAGAKU KAISHI, no. 11 (1987): 2186–93. http://dx.doi.org/10.1246/nikkashi.1987.2186.

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Chyba, Christopher F. "The cometary contribution to the oceans of primitive Earth." Nature 330, no. 6149 (1987): 632–35. http://dx.doi.org/10.1038/330632a0.

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Dissertations / Theses on the topic "Primitive Earth"

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Barr, Jay Arthur. "Primitive magmas of the Earth and Moon : a petrologic investigation of magma genesis and evolution." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62493.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2010.<br>"September 2010." Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>Field studies, major and trace element geochemistry, isotopes, petrography, phase equilibrium experiments and thermodynamics are used investigate and understand primitive melts from the Earth and the Moon. Chapter 1 investigates spinifex orthopyroxene compositions from the komatiites of Commondale, South Africa, and uses phase equilibrium experiments to illustrate that the Commond
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Carrasco, Nathalie. "Chimie des atmosphères planétaires : de la Terre à Titan , de Titan à la Terre primitive." Habilitation à diriger des recherches, Université de Versailles-Saint Quentin en Yvelines, 2012. http://tel.archives-ouvertes.fr/tel-00667618.

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La Terre et Titan, plus grand satellite de Saturne, présentent des similarités atmosphériques importantes. Tous deux ont une atmosphère dense d'une pression de l'ordre du bar à leur surface, composée majoritairement d'azote. Une différence majeure de composition atmosphérique les distingue. Le second composé majoritaire est l'oxygène sur la Terre, le méthane sur Titan. L'atmosphère terrestre est par conséquent une atmosphère aux propriétés oxydantes alors que l'atmosphère de Titan est à tendance réductrice. Cette propriété entraîne des schémas d'évolution par photochimie radicalement différent
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Bekaert, David V. "Isotopic constraints on the origin and nature of primitive material in the Solar System and on early Earth." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0002.

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La Terre s'est formée il y a 4,5 milliards d'années par accumulation de poussières, de roches et de gaz. La composition de ces matériaux primitifs est aujourd'hui enregistrée dans les météorites. Cependant, l'origine des éléments volatils présents dans l'atmosphère (e.g., H, C, N, O) reste incomprise. En combinant des approches expérimentales à l'étude d'échantillons naturels, je me suis intéressé aux objets célestes contenant les ingrédients nécessaires à la formation de l'atmosphère terrestre. Il s'agit principalement des éléments volatils contenus dans la matière organique des météorites et
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QUESNEL, Yoann. "INTERPRETATION DES DONNEES MAGNETIQUES MARTIENNES : CONTRAINTES SUR L' EVOLUTION PRIMITIVE DE MARS." Phd thesis, Université de Nantes, 2006. http://tel.archives-ouvertes.fr/tel-00766102.

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Les anomalies magnétiques révélées par la sonde MGS témoignent du début de l'histoire de la planète Mars. Dans ce travail les mesures magnétiques de MGS sont utilisées pour étudier l'évolution précoce de la croûte et du noyau de Mars. Une méthode inverse est développée pour calculer les paramètres de sources crustales dipolaires. Des tests avec des données synthétiques et l'étude d'un cas terrestre prouvent l'efficacité de notre approche. Les anomalies magnétiques de 3 régions de Mars sont ensuite étudiées. L'intense (1 à 140 A/m) et profonde (30 à 145 km) aimantation de la lithosphère martien
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Fleury, Benjamin. "La haute atmosphère de la Terre primitive, une source de composés organiques prébiotiques." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLV012/document.

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L’origine de la matière de la Terre primitive est un important sujet de recherche en planétologie. Cette thèse présente une étude expérimentale de la formation de composés organiques dans l’atmosphère de la Terre primitive en étudiant la réactivité de mélanges gazeux majoritairement composé de N2 et CO2. Ils présentent une importante réactivité se traduisant par la formation de produits gazeux et solides, appelés tholins. La formation de ces produits met en avant l’efficacité de CO2 comme source de carbone pour la croissance organique atmosphérique. L’identification des produits gazeux et l’an
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Ulvrová, Martina. "Dynamique des fluides et des transports appliquée à la Terre primitive." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2012. http://tel.archives-ouvertes.fr/tel-00776472.

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Nous avons étudié le transfert de chaleur et de matière au cours de l'histoire de la Terre primitive à de multiples échelles en utilisant des modèles numériques. Deux systèmes différents sont abordés. Tout d'abord, nous nous concentrons sur les premiers stades de la formation du noyau terrestre lorsque le fer se sépare des silicates et descend vers l'intérieur de la planète. Au cours de la différenciation, des interactions chimiques et thermiques se produisent entre les gouttes de fer dispersées dans des silicates fondus formant un océan de magma. Nous étudions le transport chimique des élémen
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Dehouck, Erwin. "Caractérisation des processus d'altération à la surface de Mars primitive par approche expérimentale et télédétection." Phd thesis, Université de Nantes, 2012. http://tel.archives-ouvertes.fr/tel-00774415.

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L'enregistrement géologique de Mars a préservé des minéraux indicateurs d'une altération par l'eau liquide active durant plusieurs centaines de millions d'années après la formation de la planète. La reconstitution de ces processus anciens est un enjeu majeur de la planétologie, l'évolution de la Terre primitive étant inaccessible aujourd'hui en raison du renouvellement de la croûte terrestre par la tectonique des plaques, le volcanisme et l'érosion. Cette thèse apporte plusieurs contributions à la compréhension des processus d'altération sur Mars primitive à travers des expériences d'altératio
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Marrocchi, Yves. "Incorporation des gaz rares dans la matière organique primitive du système solaire." Phd thesis, Institut National Polytechnique de Lorraine - INPL, 2005. http://tel.archives-ouvertes.fr/tel-00258016.

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L'origine de la matière organique insoluble des météorites et des gaz rares associés est très mal comprise. Des expériences ont été effectuées lors de cette thèse afin de mieux cerner les environnements plausibles de formation. L'adsorption physique basse pression permet de reproduire les abondances et le fractionnement élémentaire des gaz rares pour un intervalle de température de 80-100 K mais ne permet pas de rendre compte de la forte rétention des gaz rares dans la matière organique. De plus, les phénomènes d'adsoprtion n'induisent pas un fractionnement isotopique mesurable. Une expérience
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Shah, Vijay Pravin. "A wavelet-based approach to primitive feature extraction, region-based segmentation, and identification for image information mining." Diss., Mississippi State : Mississippi State University, 2007. http://library.msstate.edu/etd/show.asp?etd=etd-07062007-134150.

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Pons, Marie-Laure. "La Terre à l'Archéen. Apport des isotopes de métaux de transition (Zn, Fe)." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2011. http://tel.archives-ouvertes.fr/tel-00682665.

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L'Archéen, de 4 à 2,5 Ga, est la période qui a connu les plus grands bouleversements géologiques et biologiques de l'histoire de la Terre : formation des continents, transition d'une tectonique à composante verticale vers une tectonique des plaques horizontale, apparition de la vie, ... Le but de cette thèse est d'étudier les conditions environnementales de la Terre à l'Archéen, par l'analyse des compositions isotopiques de métaux de transition (Fe, Zn) de roches provenant principalement de la province d'Isua au Groenland (3,8 Ga). Après avoir adapté le protocole de séparation du Fe, Cu, Zn à
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Books on the topic "Primitive Earth"

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1948-, Wescott David, and Society of Primitive Technology, eds. Primitive technology: A book of earth skills. Gibbs Smith Publisher, 1999.

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Burroughs, Edgar Rice. Savage Pellucidar. University of Nebraska Press, 2007.

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Hengel, Martin. Jesus und das Judentum. Mohr Siebeck, 2007.

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Maria, Schwemer Anna, ed. Jesus und das Judentum. Mohr Siebeck, 2007.

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Vanishing tribes: Primitive man on Earth. Doubleday, 1987.

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Magical Objects: From Around the World (Earth Treasures). Dutton Juvenile, 1997.

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Earth Dances: Music in Search and the Primitive. ReadHowYouWant.com, Limited, 2015.

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Ford, Andrew. Earth Dances: Music in search of the primitive. Black Inc., 2015.

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Olson, Miles. Unlearn, Rewild: Earth Skills, Ideas and Inspirations for the Future Primitive. New Society Publishers, Limited, 2012.

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Unlearn Rewild Earth Skills Ideas And Inspiration For The Future Primitive. New Society Publishers, 2012.

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Book chapters on the topic "Primitive Earth"

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Kirkby, Anne V. "Primitive Irrigation." In Water, Earth, and Man. Routledge, 2021. http://dx.doi.org/10.4324/9781003170181-19.

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Debussche, Arnaud, Etienne Mémin, and Antoine Moneyron. "Some Properties of a Non-hydrostatic Stochastic Oceanic Primitive Equations Model." In Mathematics of Planet Earth. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70660-8_8.

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AbstractIn this chapter, we study how relaxing the classical hydrostatic balance hypothesis affects theoretical aspects of the LU primitive equations well-posedness. We focus on models that sit between incompressible 3D LU Navier-Stokes equations and standard LU primitive equations, aiming for numerical manageability while capturing non-hydrostatic phenomena. Our main result concerns the well-posedness of a specific stochastic interpretation of the LU primitive equations.
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Tucciarone, Francesco L., Etienne Mémin, and Long Li. "Data Driven Stochastic Primitive Equations with Dynamic Modes Decomposition." In Mathematics of Planet Earth. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-40094-0_15.

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AbstractAs planetary flows are characterised by interaction of phenomenons in a huge range of scales, it is unaffordable today to resolve numerically the complete ocean dynamics. In this work, a stochastic version of primitive equations are implemented into the NEMO community ocean model to assess the capability of the so-called Location Uncertainty framework in representing the small scales of the ocean flows.
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Hu, Ruiao, and Stuart Patching. "Variational Stochastic Parameterisations and Their Applications to Primitive Equation Models." In Mathematics of Planet Earth. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18988-3_9.

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AbstractWe present a numerical investigation into the stochastic parameterisations of the Primitive Equations (PE) using the Stochastic Advection by Lie Transport (SALT) and Stochastic Forcing by Lie Transport (SFLT) frameworks. These frameworks were chosen due to their structure-preserving introduction of stochasticity, which decomposes the transport velocity and fluid momentum into their drift and stochastic parts, respectively. In this paper, we develop a new calibration methodology to implement the momentum decomposition of SFLT and compare with the Lagrangian path methodology implemented
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Weihman, Lisa. "Female Militancy and Irish Primitivism: Dorothy Macardle’s Earth-Bound." In Irish Modernism and the Global Primitive. Palgrave Macmillan US, 2009. http://dx.doi.org/10.1057/9780230617193_10.

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Tucciarone, Francesco L., Etienne Mémin, and Long Li. "Primitive Equations Under Location Uncertainty: Analytical Description and Model Development." In Mathematics of Planet Earth. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18988-3_18.

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AbstractResolving numerically all the scale interactions of ocean dynamics in a high resolution realistic configuration is today far beyond reach, and only large scale representations can be afforded. In this work, we study a stochastic parameterization of the ocean primitive equations derived within the modelling under location uncertainty framework. First numerical assessments built with the NEMO core’s code are provided for a double-gyres configuration.
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Tucciarone, Francesco L., Long Li, Etienne Mémin, and Louis Thiry. "Transport Noise Defined from Wavelet Transform for Model-based Stochastic Ocean Models." In Mathematics of Planet Earth. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70660-8_13.

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AbstractThe simulation of planetary flows at all the scales that have a significant impact on the climate system is unachievable with nowadays computational resources. Parametrization of the scales smaller than the simulation resolution is thus crucial to correctly resolve the ocean dynamics. In this work, a novel parametrization of the subgrid scales by means of the wavelet transform is introduced in the shallow water and primitive models within the so-called Location Uncertainty framework.
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Commeyras, Auguste, Laurent Boiteau, Odile Vandenabeele-Trambouze, and Franck Selsis. "Peptide Emergence, Evolution and Selection on the Primitive Earth." In Lectures in Astrobiology. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/10913406_15.

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Commeyras, Auguste, Laurent Boiteau, Odile Vandenabeele-Trambouze, and Franck Selsis. "Peptide Emergence, Evolution and Selection on the Primitive Earth." In Lectures in Astrobiology. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/10913406_16.

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Martin, Hervé. "Genesis and Evolution of the Primitive Earth Continental Crust." In Lectures in Astrobiology. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/10913406_5.

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Conference papers on the topic "Primitive Earth"

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Igarashi, G. "Primitive xenon in the earth." In Volatiles in the Earth and solar system. AIP, 1995. http://dx.doi.org/10.1063/1.48751.

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Khare, Bishun N., C. McKay, P. Wilhite, et al. "Organic matter in the Titan lakes, and comparison with primitive Earth." In FIRST INTERNATIONAL CONFERENCE ON CHEMICAL EVOLUTION OF STAR FORMING REGION AND ORIGIN OF LIFE: Astrochem2012. AIP, 2013. http://dx.doi.org/10.1063/1.4812602.

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Ekanayake, E. M. K. B., and K. G. T. D. Dissanayake. "An Alternative underground hoisting system for Kahatagaha underground graphite mine, Sri Lanka- a case study." In International Symposium on Earth Resources Management & Environment - ISERME 2024. Division of Sustainable Resources Engineering, Hokkaido University, Japan, 2024. https://doi.org/10.31705/iserme.2024.35.

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Hoisting systems used in underground mines are essential for the transportation of equipment, personnel, mined ore and thus for the productivity of an underground mine. It consists of various components in which there are shear wheels, winches, wire ropes, lift cages, carriage boxes and electric motors. The safety and reliability of the hoist depends on its design, therefore proper and accurate design of a hoist is essential. A properly designed hoisting system also supports to increase underground productivity as well. Kahatagaha underground graphite mine is the deepest underground graphite m
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Amaral, José N., Guang Gao, and Xinan Tang. "An Implementation of a Hopfield Network Kernel on EARTH." In Simpósio Brasileiro de Arquitetura de Computadores e Processamento de Alto Desempenho. Sociedade Brasileira de Computação, 1998. http://dx.doi.org/10.5753/sbac-pad.1998.22674.

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EARTH is a multithreaded program execution and architecture model that hides communication and synchronization latencies through fine-grain multithreading. EARTH provides a simple synchronization mechanism: a thread is spawned when a pre-specified number of synchronization signals are received in its synchronization slot - signaling the fact that all dependences required for its execution are satisfied. This simple synchronization mechanism is an essential primitive in Threaded-C — a multithreaded language designed to program applications on EARTH. The EARTH synchronization mechanism has been
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Sliva, Clotilde Q., James H. Wittke, and Gordon B. Haxel. "UNUSUAL MINERALS AND ASSOCIATIONS IN PRIMITIVE ULTRAPOTASSIC MICROSHONKINITE DIKES, MOUNTAIN PASS RARE EARTH DISTRICT, SOUTHERN CALIFORNIA." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-296257.

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Yin, An. "PRIMITIVE PLATE TECTONICS IN THE CONTEXT OF PRESENT-DAY PLATE TECTONICS ON EARTH: A PLANETARY PERSPECTIVE." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-323059.

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Hao, Jihua, Haofan Jiang, Pengcheng Ju, Gen-Tao Zhou, Fang Huang, and Wenhan Cheng. "Synthesis/destruction of building blocks of life during impact-induced hydrothermal activities on the primitive Earth?" In Goldschmidt2022. European Association of Geochemistry, 2022. http://dx.doi.org/10.46427/gold2022.11729.

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Shcherbina, M., and D. Kovaleva. "Gaia Data Release 3: analysis of reflectance spectra of near-Earth asteroids and Mars-crossers." In Modern astronomy: from the Early Universe to exoplanets and black holes. Special Astrophysical Observatory of the Russian Academy of Sciences, 2024. https://doi.org/10.26119/vak2024.118.

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Since July 2014, the European Space Agency (ESA) Gaia mission has been observing objects in the Solar System as part of its various scientific missions. The third data release (DR3) includes observations of more than 150,000 objects, including asteroids. Analysis of Gaia asteroid reflectance spectra has allowed for the first time to determine spectral types for many objects and to confirm or refine previously determined classes. The distribution of spectral groups coincides with the analysis of ground-based observations performed by other authors, with a sample overlap of less than 20 %. The m
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Martins, Zita. "Exogenous delivery of organic matter to the early Earth by primitive carbonaceous meteorites and implications for the origin of life." In Goldschmidt2021. European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.8118.

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Busarev, V. V. "Active asteroids of the Main Belt as probable relics of the formation processes of giant planets." In ASTRONOMY AT THE EPOCH OF MULTIMESSENGER STUDIES. Proceedings of the VAK-2021 conference, Aug 23–28, 2021. Crossref, 2022. http://dx.doi.org/10.51194/vak2021.2022.1.1.076.

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The discovery and study of cometary activity of some bodies in the Main-Belt of asteroids (MBA) over the past decadeallowed us suggest that the most common cause of this phenomenon is a significant content of water ice in the subsurfacelayers of primitive asteroids. Accordingly, this may be a sign of the formation of such asteroids (or their parent bodies)behind the snowline. As demonstrated analytical calculations performed more than 50 years ago [1], a sharp increase inthe number and total mass of stone-ice bodies behind the snowline let possible the runaway growth of giant planets there,espe
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Reports on the topic "Primitive Earth"

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Piercey, S. J., and J. L. Pilote. Nd-Hf isotope geochemistry and lithogeochemistry of the Rambler Rhyolite, Ming VMS deposit, Baie Verte Peninsula, Newfoundland: evidence for slab melting and implications for VMS localization. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328988.

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New high precision lithogeochemistry and Nd and Hf isotopic data were collected on felsic rocks of the Rambler Rhyolite formation from the Ming volcanogenic massive sulphide (VMS) deposit, Baie Verte Peninsula, Newfoundland. The Rambler Rhyolite formation consists of intermediate to felsic volcanic and volcaniclastic rocks with U-shaped primitive mantle normalized trace element patterns with negative Nb anomalies, light rare earth element-enrichment (high La/Sm), and distinctively positive Zr and Hf anomalies relative to surrounding middle rare earth elements (high Zr-Hf/Sm). The Rambler Rhyol
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