Results 61 to 70 of about 104,611 (276)

A comprehensive study of distribution laws for the fragments of Košice meteorite [PDF]

open access: yes, 2014
In this study, we conduct a detailed analysis of the Košice meteorite fall (February 28, 2010), to derive a reliable law describing the mass distribution among the recovered fragments. In total, 218 fragments of the Košice meteorite, with a total mass of
M. Gritsevich   +6 more
semanticscholar   +1 more source

Robust Synthesis of Prebiotic Precursors in Drying Reactions of Amino Acids and Keto Acids

open access: yesChemSystemsChem, EarlyView.
Drying conditions drive reactions between amino acids and keto acids, generating a wide variety of small, reactive species, highlighting for the first time the potential significance of drying reactions in proto‐metabolism on early Earth. Condensation‐dehydration reactions are critical to both metabolism and polymerization in extant biology, and their ...
Eliav Marland   +7 more
wiley   +1 more source

Influence of the Yucatan earthquake event

open access: yesFrontiers in Earth Science, 2023
In recent years, seismic wave effects caused by meteorite impacts have been widely observed. The meteorite impact event that occurred 66 million years ago is one of the most famous impact events in Earth’s history.
Changcheng Li
doaj   +1 more source

Ontogeny of foraging behaviour in an opportunistic gull inhabiting urban marine ecosystems

open access: yesWildlife Biology, EarlyView.
Urbanization affects ecosystems by reducing biodiversity and displacing species from native habitats. While some suffer, others, like urban wildlife, adapt through innovative feeding and behaviours that improve their fitness in human‐altered settings. Despite research on wildlife in urban areas, the development of foraging behaviour in urban species is
Joan Navarro   +7 more
wiley   +1 more source

Two years of the Javorje meteorite investigations

open access: yesGeologija, 2012
Meteorite Javorje is a IIIAB medium octahedrite iron meteorite with 7.83 wt% Ni content. It was found inNovember 2009 near village Javorje in the Poljane Valley.
Miloš Miler, Mateja Gosar
doaj  

Collections for the Public Good: A Case Study from Ohio

open access: yesDiversity
Natural history collections serve science and society in a variety of ways. Collections of geological, including paleontological, materials are of special importance in the 21st century, as they serve not only as repositories for scientific research ...
Loren E. Babcock   +11 more
doaj   +1 more source

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

open access: yesGreen 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   +3 more
doaj   +1 more source

Educational Activities of the First Special Meteor Expedition of the Russian Academy of Sciences in 1921–1922 [PDF]

open access: yesГуманитарный вектор
Investigating the activities of the First Soviet Meteorite Expedition of 1921–1922, the paper aims to analyze the objectives of the expedition and fill in some gaps in the Quest for the Tunguska Meteorite.
Svetlana V. Bershadskaya
doaj   +1 more source

The morphosedimentary record of glacial to postglacial environmental changes in West Wiyâshâkimî impact crater lake and adjacent areas, northern Québec, Canada

open access: yesBoreas, EarlyView.
Crater lakes in core regions of former ice sheets have the potential to preserve long‐term sedimentary archives that are otherwise rare in glaciated landscapes due to pervasive glacial erosion. Lake Wiyâshâkimî, an impact crater lake located in the inner core of the Québec‐Labrador Dome of the Laurentide Ice Sheet, provides a rare example of such a ...
Etienne Brouard, Patrick Lajeunesse
wiley   +1 more source

Morphology and distribution of lakes under the Laurentide Ice Sheet: implications for ice flow dynamics

open access: yesBoreas, EarlyView.
This study examines the distribution and morphology of lakes under the Laurentide Ice Sheet (LIS) to investigate relationships with ice flow velocity, bedrock and basal thermal regime. Palaeo‐ice streams and lobes were important components of the LIS, and properties of lakes in those regions are quantified at high resolution.
Sarah M. Principato, Carissa M. Mobley
wiley   +1 more source

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