Results 51 to 60 of about 235,656 (299)

Cosmic dust fertilization of glacial prebiotic chemistry on early Earth [PDF]

Earth. Nat Astron (2024)
Earth's surface is deficient in available forms of many elements considered limiting for prebiotic chemistry. In contrast, many extraterrestrial rocky objects are rich in these same elements. Limiting prebiotic ingredients may, therefore, have been delivered by exogenous material; however, the mechanisms by which exogeneous material may be reliably and
arxiv   +1 more source

Mars sedimentary rock erosion rates constrained using crater counts, with applications to organic matter preservation and to the global dust cycle [PDF]

, 2016
Small-crater counts on Mars light-toned sedimentary rock are often inconsistent with any isochron; these data are usually plotted then ignored. We show (using an 18-HiRISE-image, >10^4 crater dataset) that these non-isochron crater counts are often well-fit by a model where crater production is balanced by crater obliteration via steady exhumation. For
arxiv   +1 more source

Stratigraphic forward modeling software package for research and education [PDF]

arXiv, 2023
We have developed an open-source software package (SedSimple) for stratigraphic forward modeling. It is aimed for use in research and education. The package uses ASCII files for input and output to facilitate understanding, debugging and preparation of multiple data sets though simple user-developed scripts.
arxiv  

Enhanced Fog Water Harvesting on Superhydrophobic Steel Meshes

Advanced Engineering Materials, EarlyView.
Fog harvesting using mesh designs offers a sustainable solution to water scarcity. This study highlights key considerations for fog harvesting research and develops a methodology for a standardized protocol reflecting fog characteristics and environmental conditions.
Pegah Sartipizadeh, Mohammad Reza Mohammadizadeh, Carlo Antonini, Raziyeh Akbari   +3 more
wiley   +1 more source

Mapping of Genetic Sequences of the Cambrian Series in the Jbel Saghro Massif, Eastern Anti-Atlas, Morocco: Implications for Eustatic and Tectonic Controls

Iraqi Geological Journal, 2022
In this paper, a sedimentological and sequence stratigraphy analysis was performed on Lower and Middle Cambrian deposits of Jbel Saghro, Eastern Anti-Atlas.
Assia Idrissi, Mohamed Saadi, Yassir Astati, Ali Bouayachi, Kawtar Benyas   +4 more
doaj   +1 more source

Subsistence of ice-covered lakes during the Hesperian at Gale crater, Mars [PDF]

, 2019
Sedimentary deposits characterized by the Mars Science Laboratory Curiosity rover provide evidence that Gale crater, Mars intermittently hosted a fluvio-lacustrine environment during the Hesperian. However, estimates of the CO2 content of the atmosphere at the time the sediments in Gale crater were deposited are far less than needed by any climate ...
arxiv   +1 more source

Evolution of major sedimentary mounds on Mars [PDF]

Journal of Geophysical Research - Planets, 121, 2282, 2017
We present a new database of $>$300 layer-orientations from sedimentary mounds on Mars. These layer orientations, together with draped landslides, and draping of rocks over differentially-eroded paleo-domes, indicate that for the stratigraphically-uppermost $\sim$1 km, the mounds formed by the accretion of draping strata in a mound-shape.
arxiv   +1 more source

Adjustable Plasmonic Core–Shell Nanoparticles for Personalized Color Vision Correction

Advanced Engineering Materials, EarlyView.
This study introduces a personalized solution for correcting color vision deficiency (CVD) by embedding tunable core‐shell metal nanoparticles—a common nanotechnology—into contact lenses. By customizing the nanoparticles’ optical properties to filter specific wavelengths, these lenses address individual visual impairments, enhancing color ...
Hyeonah Lee, Yejin Park, Mijin Kim, Myungsung Sim, Hyeran Noh   +4 more
wiley   +1 more source

Changes in marine sedimentation patterns in the northeastern South China Sea in the past 35,000 years

Communications Earth & Environment
In the continental margin of the northeastern South China Sea, the sea level fluctuations since the Last Glacial Maximum have profoundly impacted the sedimentary environment.
Kuan-Ting Chen, Shu-Kun Hsu, Andrew Tien-Shun Lin, Chih-Chieh Su, Nathalie Babonneau, Gueorgui Ratzov, Serge Lallemand, Pi-Chun Huang, Lien-Kai Lin, Hsiao-Shan Lin, Ching-Hui Tsai, Jing-Yi Lin, Song-Chuen Chen   +12 more
doaj   +1 more source

Evaluasi Sistem Pengendapan Uranium Pada Batuan Sedimen Formasi Sibolga, Tapanuli Tengah [PDF]

Eksplorium: Buletin Pusat Pengembangan Bahan Galian Nuklir, 2016
Uranium in nature formed in various deposit type, depends on its sources, process, and depositional environments. Uranium occurrence in Sibolga, hosted in sedimentary rocks of Sibolga Formation, is properly potential to develop; nevertheless, the ...
I Gde Sukadana, Heri Syaeful
doaj   +1 more source