Results 51 to 60 of about 104,611 (276)

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

Fossil Glasses Produced by Impact of Meteorites, Asteroids and Possibly Comets with the Planet Earth [PDF]

, 1962
In recent times one of the most intriguing mysteries of geology bas been the occurrence of aerodynamically-shaped glasses on five continents of the earth. These glasses under discussion are obviously not of fulgurite origin.
Cohen, A. J.
core   +1 more source

Nature's Starships II: Simulating the Synthesis of Amino Acids in Meteorite Parent Bodies

, 2015
Carbonaceous chondrite meteorites are known for having high water and organic material contents, including amino acids. Here we address the origin of amino acids in the warm interiors of their parent bodies (planetesimals) within a few million years of ...
Cobb, Alyssa K., Pearce, Ben K. D., Pudritz, Ralph E.   +2 more
core   +1 more source

Charge State Influence on Stability and Isomerism in Dehydrogenated PAHs: Insights from Anthracene, Acridine, and Phenazine

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida, Farouk Hamza Reguig, Manuel Alcamí, Al Mokhtar Lamsabhi   +3 more
wiley   +1 more source

Petrography and bulk composition of Miller Range 05035: a new lunar VLT gabbro [PDF]

, 2007
Miller Range (MIL) 05035 is a crystalline lunar mare gabbroic meteorite collected in Antarctica in 2005 [1]. It is an important new sample in the lunar meteorite (LM) collection as it is only one of ~8 to be classified as basaltic in nature. MIL 05035 is
Anand, M., Crawford, I. A., Joy, K. H., Russell, S. S.   +3 more
core  

Rare‐Earth‐Free Iron‐Based Permanent Magnets: Progress, Challenges, and Perspectives

MetalMat, EarlyView.
Rare‐earth (RE)‐free iron‐based permanent magnets have gained attention as inexpensive, environmentally friendly alternatives to conventional RE‐based magnets. This review focuses on emerging Fe‐based hard magnets, discussing the fundamental principles governing their permanent magnetism and various examples of Fe‐based systems with emphasis on their ...
Sunbeom Park, Ji Kwon Bae, Sung Hyuk Park, Hee Ryeong Kwon, Ho Won Jang   +4 more
wiley   +1 more source

THE EXISTENCE OF GROUPS OF METEORITE-PRODUCING FIRE-BALLS AND METEORITES IN COMET-LIKE ORBITS

Odessa Astronomical Publications, 2018
This paper discusses the existence of groups of meteorite-producing fireballs and ordinary chondrites in the Earth-crossing Jupiter-family comet-like (JFC) orbits.
N. A. Konovalova, Yu. M. Gorbanev, N. H. Davruqov   +2 more
doaj   +1 more source

GROUPS OF METEORITE-PRODUCING METEOROIDS AND METEORITES IN ASTEROIDAL ORBITS AND THEIR SOURCES

Odessa Astronomical Publications, 2020
This paper presents the results of the analysis of possible existence of nine near-Earth meteorite-producing groups in asteroidal orbits, consisting of sporadic fireballs from the IAU MDC 2007 database, sporadic meteors from the SonotaCo database ...
Yu. M. Gorbanev, N. A. Konovalova, N. Kh. Davruqov   +2 more
doaj   +1 more source

Orbital evolution of P\v{r}\'{i}bram and Neuschwanstein

, 2011
The orbital evolution of the two meteorites P\v{r}\'{i}bram and Neuschwanstein on almost identical orbits and also several thousand clones were studied in the framework of the N-body problem for 5000 years into the past.
A. Pauls, B.A. Lindblad, D.C. Jones, D.C. Jones, D.O. ReVelle, H. Stauffer, I. Halliday, J. Oberst, J.S. Stuart, Juraj Tóth, Leonard Kornoš, P. Brown, P. Spurný, P. Vereš, P. Vereš, Peter Vereš, R.B. Southworth, V. Porubčan, W.F. Bottke, Z. Ceplecha, Z. Wu   +20 more
core   +1 more source

The amino acid and hydrocarbon contents of the Paris meteorite: Insights into the most primitive CM chondrite

, 2015
The Paris meteorite is one of the most primitive carbonaceous chondrites. It is reported to be the least aqueously altered CM chondrite, and to have experienced only weak thermal metamorphism.
Z. Martins, P. Modica, B. Zanda, L. d'Hendecourt   +3 more
semanticscholar   +1 more source