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Artykuły w czasopismach na temat "Planetary embryos"
Morbidelli, Alessandro. "Calcium signals in planetary embryos". Nature 555, nr 7697 (marzec 2018): 451–52. http://dx.doi.org/10.1038/d41586-018-03144-1.
Pełny tekst źródłaWigginton, N. S. "The chronology of planetary embryos". Science 344, nr 6188 (5.06.2014): 1128. http://dx.doi.org/10.1126/science.344.6188.1128-k.
Pełny tekst źródłaSvetsov, Vladimir. "Cratering erosion of planetary embryos". Icarus 214, nr 1 (lipiec 2011): 316–26. http://dx.doi.org/10.1016/j.icarus.2011.04.026.
Pełny tekst źródłaBriand, C. H., S. Gauthier, J. F. Lemay, S. Laliberté i M. F. Tremblay. "Relationship between field performance, family, embryo morphology, and isozyme heterozygosity, and in vitro reactivity in jack pine". Canadian Journal of Forest Research 28, nr 1 (1.01.1998): 98–105. http://dx.doi.org/10.1139/x97-187.
Pełny tekst źródłaDaryatmo, Daryatmo, Niken Ulupi, Rudi Afnan i Wahyuni Wahyuni. "Article Review : Nutrition Stimulation with In ovo feeding Technology for Optimization of Growth and Development of Prenatal and Postnatal Periods of Chicken". Jurnal Ternak 14, nr 2 (20.10.2023): 51. http://dx.doi.org/10.30736/jt.v14i2.185.
Pełny tekst źródłaEmsenhuber, Alexandre, Christoph Mordasini, Remo Burn, Yann Alibert, Willy Benz i Erik Asphaug. "The New Generation Planetary Population Synthesis (NGPPS)". Astronomy & Astrophysics 656 (grudzień 2021): A70. http://dx.doi.org/10.1051/0004-6361/202038863.
Pełny tekst źródłaColeman, Gavin A. L. "From dust to planets – I. Planetesimal and embryo formation". Monthly Notices of the Royal Astronomical Society 506, nr 3 (6.07.2021): 3596–614. http://dx.doi.org/10.1093/mnras/stab1904.
Pełny tekst źródłaZasada, John C. "Embryo growth in Alaskan white spruce seeds". Canadian Journal of Forest Research 18, nr 1 (1.01.1988): 64–67. http://dx.doi.org/10.1139/x88-010.
Pełny tekst źródłaArkani-Hamed, Jafar, i Boris A. Ivanov. "Shock wave propagation in layered planetary embryos". Physics of the Earth and Planetary Interiors 230 (maj 2014): 45–59. http://dx.doi.org/10.1016/j.pepi.2014.03.005.
Pełny tekst źródłaLambrechts, Michiel, Alessandro Morbidelli, Seth A. Jacobson, Anders Johansen, Bertram Bitsch, Andre Izidoro i Sean N. Raymond. "Formation of planetary systems by pebble accretion and migration". Astronomy & Astrophysics 627 (lipiec 2019): A83. http://dx.doi.org/10.1051/0004-6361/201834229.
Pełny tekst źródłaRozprawy doktorskie na temat "Planetary embryos"
Schnuriger, Nicolas. "Conditions redox de formation des chondres et de leurs précurseurs". Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0047.
Pełny tekst źródłaChondrules are small igneous silicate particles, ubiquitous among primitive meteorites yet their formation is still poorly understood. The precursor nature, as well as the origin of the gas in interaction with the chondrule in formation, is in the center of many debates. Using mineralogical, chemical and isotopic study of chondrules among several meteorites, this thesis will try to trace back the origin of the chondrule precursor, as well as constraining the environment of chondrules formation. In the first place, the results do not indicate any genetic link between the refractory inclusions and the chondrules, based on the discrepancies among the chemical and isotopic (δ¹⁷,¹⁸O) compositions. These results prove that the olivine and spinel are co-magmatic. On this basis, it has been possible to better constrain the thermal history of chondrules using a geothermometer based on the Al partitioning between the two minerals. It would appear that chondrules formed along a non-linear cooling path, with a crystallization temperature of the olivine-spinel assemblages around 1470 °C. Afterward, the measurements of trace elements, such as the Rare Earth Elements, did not highlighted any link between the olivine of chondrules and those within refractory inclusions. Eventhough this does not add new arguments toward a recycling of AOAs into chondrules,others point toward that this hypothesis is still the more reliable. Finally, the last section of this thesis focused on constraining the environment of formation of chondrules. Oxybarometers based on V and Cr partitioning between minerals in chondrules and the mesostasis suggest that chondrules formed under highly reducing conditions (IW-5), matching with a nebular environment enriched with dust. Moreover,XANES measurements of Ti, V and Cr valence in relict olivine (enriched in ¹⁶O) and hosts (depleted in ¹⁶O) point toward reducing environments of formation. Altogether, despite the complexity of the processes at stake during the formation of chondrules, the results of this thesis suggest a formation of chondrules under highly reducing conditions, in agreement with the nebular scenarios of chondrule formation
Lin, Ja-Ren, i 林佳人. "Numerical modeling of iron core formation in planetary embryos". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/90809230013583444055.
Pełny tekst źródła國立臺灣大學
海洋研究所
99
The core formation of rocky planets is one of the most important events during the early history of these planets. The process of core formation is a topic of active research, and so far no consensus was reached. This dissertation presents a numerical investigation of a possible process of core formation, namely the descent of metal diapirs from a global ponded iron layer through an undifferentiated solid interior, leading to the formation of an iron core. The initial structure assumed in this study derived from cold accretion scenario and consists in three layers: a central undifferentiated protocore, a global iron shell, and an outer silicate-rich mantle. This structure is gravitationally unstable and leads to a differentiation in a dense, iron core in the center surrounded by a silicate rich mantle. After an introductory chapter that discuses recent ideas in planetary formation and core formation, Chapter 2 describes the numerical methods used to model the gravitational redistribution process in a 2D planetary body. In Chapter 3, accuracy tests are first conducted, and core formation process is explored with a simplified model that assumes a constant viscosity for each material and neglects the rheological effects of gravitational energy dissipation. Results indicate a transient exposure of the protocore to the planetary surface, and predict that the time for core formation depends on the strength of the solid protocore. Experiments in Chapter 4, include a non-Newtonian, temperature-, pressure-, and strain rate-dependent viscoplastic rheology, and take into account the thermal contribution from gravitational energy dissipation. Three different core formation regimes are observed, the exposure mode, the fragmentation mode, and the transition mode. Like models with Newtonian rheology in chapter 3, the core experiences large deviations from the spherical shape and may temporarily be exposed at the surface (exposure mode). By contrast to the Newtonian models, however, the destruction of the protocores observed in the fragmentation modes is driven by (i) the spontaneous strain localization along planetary-scale shear zones forming inside the protocore, and/or (ii) descending localized iron diapirs or sheets penetrating the protocore. Feedback from energy dissipation influences planetary temperature distribution although it does not significantly affect core formation regimes. However, it causes a temperature increase up to several hundred K (i) around the moving and deforming protocore, and (ii) along planetary scale rupture zones that form inside the protocore. If the protocore is large and has a high viscosity, a large fraction of the dissipated heat is partitioned to increase the temperature of iron.
"Can Porphyritic Chondrules Form in Planetary Embryo Bow Shocks?" Master's thesis, 2018. http://hdl.handle.net/2286/R.I.50540.
Pełny tekst źródłaDissertation/Thesis
Masters Thesis Geological Sciences 2018
Części książek na temat "Planetary embryos"
Ikoma, M., L. Elkins-Tanton, K. Hamano i J. Suckale. "Water Partitioning in Planetary Embryos and Protoplanets with Magma Oceans". W Space Sciences Series of ISSI, 315–42. Dordrecht: Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-94-024-1628-2_10.
Pełny tekst źródłaAlibert, Yann, i Ravit Helled. "Planetary Embryo". W Encyclopedia of Astrobiology, 1921. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_5113.
Pełny tekst źródłaAlibert, Yann, i Ravit Helled. "Planetary Embryo". W Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_5113-1.
Pełny tekst źródłaAlibert, Yann, i Ravit Helled. "Planetary Embryo". W Encyclopedia of Astrobiology, 2361–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-65093-6_5113.
Pełny tekst źródłaKortenkamp, S. J., E. Kokubo i S. J. Weidenschilling. "Formation of Planetary Embryos". W Origin of the Earth and Moon, 85–100. University of Arizona Press, 2000. http://dx.doi.org/10.2307/j.ctv1v7zdrp.10.
Pełny tekst źródłaLeliwa-Kopystynski, J., i Z. Czechowski. "The growth of planets due to capture oi solid grains by single planetary embryo". W High Pressure Investigations in Geosciences, 229–42. De Gruyter, 1989. http://dx.doi.org/10.1515/9783112477007-030.
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