Results 21 to 30 of about 2,410,397 (202)

Dual isotopic composition of methane in Murchison meteorite [PDF]

, 2001
Dual isotopic composition (H and C) of methane extracted from a small sample of Murchison meteorite reveals a deuterium enrichment for this molecule, indicating the presence of interstellar ...
Sephton, M. A., Butterworth, A. L., Gilmour, I.   +2 more
core   +5 more sources

Quantitative Analysis of Meteorite Elements Based on the Multidimensional Scaling–Back Propagation Neural Network Algorithm Combined with Raman Mapping-Assisted Micro-Laser Induced Breakdown Spectroscopy

Chemosensors, 2023
Meteorites are an essential reference for human exploration of the universe and its cosmic evolution and an essential research object for searching for extraterrestrial life. Ways to quickly identify and screen suspected meteorite samples have become the
Hongpeng Wang, Yingjian Xin, Peipei Fang, Yian Wang, Mingkang Duan, Wenming Wu, Ruidong Yang, Sicong Liu, Liang Zhang, Xiong Wan   +9 more
doaj   +1 more source

Lunar meteorite regolith breccias: an in situ study of impact melt composition using LA-ICP-MS with implications for the composition of the lunar crust [PDF]

, 2007
Dar al Gani (DaG) 400, Meteorite Hills (MET) 01210, Pecora Escarpment (PCA) 02007, and MacAlpine Hills (MAC) 88104/88105 are lunar regolith breccia meteorites that provide sampling of the lunar surface from regions of the Moon that were not visited by ...
Crawford, Ian A., Katherine H. JOY, Sara S. RUSSELL, Joy, K.H., Ian A. CRAWFORD, Joy, Katherine H., Anton T. KEARSLEY, Russell, Sara S., Kearsley, Anton T., Crawford, Ian, Russell, S.S., Kearsley, A.T., Fernando Rosell-Aguilar, Rosell-Aguilar, Fernando   +13 more
core   +1 more source

Determining the mechanical parameters of asteroid rocks using NWA13618 meteorites and microscale rock mechanics experiment

Rock and Soil Mechanics, 2022
In the future, the extraterrestrial human activities, such as resources exploitation and base construction beyond the Earth need the aid of geotechnical engineering technology.
TANG Xu-hai, XU Jing-jing, ZHANG Yi-heng, HE Qi, WANG Zheng-zhi, ZHANG Guo-ping, LIU Quan-sheng   +6 more
doaj   +1 more source

Outgassing Composition of the Murchison Meteorite: Implications for Volatile Depletion of Planetesimals and Interior-atmosphere Connections for Terrestrial Exoplanets

The Planetary Science Journal, 2023
Outgassing is a central process during the formation and evolution of terrestrial planets and their atmospheres both within and beyond the solar system.
Maggie A. Thompson, Myriam Telus, Graham Harper Edwards, Laura Schaefer, Jasmeet Dhaliwal, Brian Dreyer, Jonathan J. Fortney, Kyle Kim   +7 more
doaj   +1 more source

Clay minerals and other hydrous alteration products in the Kaba meteorite: Review of the literature and new XRD investigations

Open Astronomy, 2023
The present study is a review of publications regarding special aspects of the mineralogy of the Kaba meteorite, clay minerals, hydrous phases, and organic matter.
Viczián István, Kristály Ferenc
doaj   +1 more source

Rapid Determination of Meteorolite Composition Based on X-ray Phase Contrast Imaging-Assisted Raman Spectroscopy

Chemosensors, 2023
Returning extraterrestrial samples to Earth has become essential for future deep space exploration. Achieving a comprehensive evaluation of the physical and chemical properties of samples with minimal damage is key to analyzing extraterrestrial samples ...
Hongpeng Wang, Peipei Fang, Yian Wang, Yingjian Xin, Shengjun Xiong, Sicong Liu, Yanling Xue, Liang Zhang, Xiong Wan   +8 more
doaj   +1 more source

Dating climatic change in hot deserts using desert varnish on meteorite finds [PDF]

, 2003
A thin coating of desert varnish occurs on Forrest 009 and Nurina 004, both equilibrated ordinary chondrite (L6) finds from the Nullarbor Plain, Australia.
Bland, P.A., Lee, M.R.
core   +1 more source

thissop/meteorite-minerals: Meteoritics Repository Release

, 2021
Full Changelog: https://github.com/thissop/meteorite-minerals/commits ...
thissop
core   +1 more source

Switching ATP‐Forming Phosphoryl‐Transfer Chemistry With a Restricted Set of Amino Acids

Angewandte Chemie, EarlyView.
Constraints on amino acid composition relevant to prebiotic chemistry reshape enzyme chemistry by replacing the canonical mechanism within a conserved protein fold with a distinct ATP‐forming reaction, ADP disproportionation. Such constraints generate alternative catalytic solutions not observed in modern enzymes and point to chemically plausible early
Sota Yagi, Subrata Dasgupta, Shunsuke Tagami, Satoshi Akanuma   +3 more
wiley   +2 more sources