Results 41 to 50 of about 41,471 (231)

The Maribo CM2 meteorite fall - survival of weak material at high entry speed

, 2019
High entry speed (> 25 km/s) and low density (< 2500 kg/m3) are two factors that lower the chance of a meteoroid to drop meteorites. The 26 g carbonaceous (CM2) meteorite Maribo recovered in Denmark in 2009 was delivered by a superbolide observed by ...
Borovicka, Jiri, Popova, Olga, Spurny, Pavel   +2 more
core   +1 more source

The origin of alteration “orangettes” in Dhofar 019: Implications for the age and aqueous history of the shergottites [PDF]

, 2017
The shergottites are the largest group of Martian meteorites, and the only group that has not been found to contain definitive evidence of Martian aqueous alteration.
Hallis, L.J., Kemppinen, L., Lee, M.R., Taylor, L.A.   +3 more
core   +1 more source

Analytical Characterization of Quantum Dot Enhancement Films in Commercial Displays

Helvetica Chimica Acta, EarlyView.
Colloidal quantum dots (QDs) are increasingly used in displays, yet many compositions are regulated due to hazardous metal content. Their accurate identification and assessment are therefore essential. Here, a multimodal analytical workflow centered on LA‐ICP‐MS enables spatially resolved identification and classification of QDs in commercial quantum ...
Dylan Käser, Tobias Schöberl, Norman Lüchinger, Yuliia Kominko, Sebastian Sabisch, Matthias Klimpel, Andrii Kanak, Sergii Yakunin, Detlef Günther, Maksym V. Kovalenko, Dmitry N. Dirin   +10 more
wiley   +1 more source

Cultivation With Powdered Meteorite (NWA 1172) as the Substrate Enhances Low-Temperature Preservation of the Extreme Thermoacidophile Metallosphaera sedula

Frontiers in Astronomy and Space Sciences, 2020
Recent studies have uncovered a vast number of thermophilic species in icy environments, permanently cold ocean sediments, cold sea waters, and cool soils.
Tetyana Milojevic, Ziga Zebec, Ziga Zebec, Ziga Zebec, Mario P. Schimak   +4 more
doaj   +1 more source

Outgassing of Ordinary Chondritic Material and Some of its Implications for the Chemistry of Asteroids, Planets, and Satellites [PDF]

, 2006
We used chemical equilibrium calculations to model thermal outgassing of ordinary chondritic material as a function of temperature, pressure, and bulk compositions and use our results to discuss outgassing on asteroids and the early Earth.
Abe, Ahrens, Alexander, Allen, Ansdell, Aston, Belov, Brearley, Breger, Brett, Britt, Brown, Bruce Fegley, Chipman, Chipman, Consolgmano, Craig, Delano, Dodd, Dreibus, Fegley, Fegley, Fegley, Funkhouser, Gaffey, Garrison, Ghosh, Gibson, Gibson, Gibson, Gibson, Gooding, Grady, Hart, Hashizume, Hashizume, Hashizume, Hashizume, Hutchison, Jarosewich, Kaplan, Kargel, Kasting, Kasting, Keller, Kothari, Kress, Krot, Kuhn, Kung, Lange, Larimer, Laura Schaefer, Lee, Lewis, Lodders, Lodders, Mason, Mason, McNaughton, McNaughton, McSween, McSween, McSween, Menzies, Merrill, Merrill, Michalak, Miller, Miller, Moore, Mostefaoui, Mueller, Muenow, Müller, Nash, O'Neill, Oparin, Oró, Pavlov, Prinn, Ramdohr, Richardson, Rietmeijer, Robert, Robert, Robert, Robie, Rubin, Rubin, Russell, Sagan, Saxena, Schaefer, Schaefer, Schaefer, Schaefer, Schaefer, Slater-Reynolds, Spear, Stribling, Sugiura, Tian, Travers, Urey, Van Zeggern, Vdovykin, Von Seckendorff, Wada, Walter, Wasson, Williams, Wilson, Wänke, Yang, Zahnle   +115 more
core   +2 more sources

A Nonlinear Quantitative Model for Measuring Concentration Ratios From Raman Intensities

Journal of Raman Spectroscopy, EarlyView.
Estimating concentration from Raman intensity ratios is complicated by cross‐contributions from overlapping peaks, causing measured ratios to deviate from the linear behavior assumed in conventional quantitative models. This nonlinear method fully accounts for cross‐contributions, allowing estimation of concentration over several orders of magnitude ...
Joseph Razzell Hollis
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

High pressure minerals in the Château-Renard (L6) ordinary chondrite: implications for collisions on its parent body [PDF]

, 2018
We report the first discoveries of high-pressure minerals in the historical L6 chondrite fall Château-Renard, based on co-located Raman spectroscopy, scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy and electron backscatter ...
Anand, Mahesh, Asimow, Paul D., Baziotis, Ioannis, Cernok, Ana, Ferrière, Ludovic, Hu, Jinping, Ma, Chi, Topa, Dan   +7 more
core   +2 more sources

Reidite Formation From Zircon Subjected to 20, 40, and 60 GPa Shock Experiments

Journal of Raman Spectroscopy, EarlyView.
Structure disordering as a result of shock pressure: In zircon shocked from 20 to 60 GPa, the shock‐induced structural disorder increases with increasing shock pressure (gray area). Shock disorder of zircon is an integral part of its transformation to reidite: Reidite occurs after amorphous material.
Dmitry A. Zamyatin, Elizaveta Kovaleva
wiley   +1 more source

Mechano-chemical synthesis of ammonia and acetic acid from inorganic materials in water

Green Processing and Synthesis, 2019
A mechano-chemical reaction formed by a simple high-energy ball milling was applied to simulate the synthesis of ammonia and organic precursors from common inorganic materials that occurred on early Earth.
Kugimiya Koichi, Kozawa Takahiro, Harada Takashi, Naito Makio   +3 more
doaj   +1 more source