Results 61 to 70 of about 7,757,874 (295)

Projectile Interactions in Granular Impact Cratering

Physical Review Letters, 2008
We present evidence for the interactions between a ball and the container boundaries, as well as between two balls, that are mediated by the granular medium during impact cratering. The presence of the bottom boundary affects the final penetration depth only for low drop heights with shallow filling, in which case, surprisingly, the penetration becomes
Katsuragi, Hiroaki, Nelson, E. L., Durian, Douglas J., Mayor, Patrick   +3 more
openaire   +5 more sources

Investigating Pompeii Subsoil Using Geomatics and Geophysics Merged Analyses

Archaeological Prospection, EarlyView.
ABSTRACT The archaeological site of Pompeii represents an exceptional context for the application of non‐invasive and integrated investigation methods aimed at enhancing the understanding of both exposed and buried remains. This study presents the results of multidisciplinary research conducted in the Palestra Grande site, a large and strategically ...
Valentina Santoro, Antonio Merico, Vincenzo Sapia, Gianluca Catanzariti, Valerio Materni, Giacomo Patrucco, Riccardo Olivito, Anna Anguissola, Ilaria Cangiano, Antonia Spanò   +9 more
wiley   +1 more source

Formation of Craters in Sand

International Scholastic Journal of Science, 2007
The diameter of craters formed by spheres of varying mass dropped into sand at low speed was studied. The relationship between the diameter of the crater formed and the kinetic energy of the projectile at impact was found to be of the same general form ...
Vanissra Boonyaleepun, Se-Won Jang
doaj  

Impact Flux on the Moon

Space: Science & Technology
The crust of the Moon records the complete history of collisions by different-sized projectiles from various sources since its early solidification. Planetary bodies in the inner Solar System experienced similar sources of impactors, and the Moon is an ...
Zhiyong Xiao, Kaichang Di, Minggang Xie, Zongyu Yue, Yangting Lin, Yiren Chang, Yichen Wang, Fanglu Luo, Rui Xu, Hanxing Ouyang   +9 more
doaj   +1 more source

Integrated biorefinery for cellulosic ethanol and spherical nanolignin production from coconut waste

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Green coconut waste was subjected to different fractionation methods to obtain integrated lignin nanoparticles and cellulosic ethanol. Pretreatment with gradual addition of dilute sulfuric acid provided a higher structural hemicellulose precursor yield (68.2%).
Ricardo Marchezan Farias de Mesquita, Júlia Caroline Dal Prá, Roselei Claudete Fontana, Sheila Montipó, Henrique Macedo Baudel, Eduardo Dieldold, Willian Daniel Hahn Schneider, Marli Camassola   +7 more
wiley   +1 more source

FAS-XAI: An Interpretable Framework for the Comparative Morphological Analysis of Lunar and Martian Impact Craters

Mathematics
Impact craters are among the most abundant geological structures on solid planetary surfaces and provide valuable information about impact processes and surface evolution.
Gabriel Marín Díaz, Eva María Andrés Núñez, Alvaro Manuel Rodriguez-Rodriguez   +2 more
doaj   +1 more source

Comparative Analysis of Bioreactor Design and Scale‐Up for Cultivated Meat Using Monte Carlo‐Based Timescale Modeling

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Cultivated meat offers a sustainable alternative to conventional livestock production but faces significant scale‐up challenges, particularly in bioreactor design for mammalian cell suspension cultures. This study presents a comparative analysis of stirred tank reactors (STR), bubble columns (BC), and airlift reactors (ALR) to assess their ...
Pieter Jan Theodoor Brorens, Marcel Ottens, Cees Haringa   +2 more
wiley   +1 more source

Morphological Indicators of a Mascon Beneath Ceres's Largest Crater, Kerwan

Geophysical Research Letters, 2018
Gravity data of Ceres returned by the National Aeronautics and Space Administration's Dawn spacecraft is consistent with a lower density crust of variable thickness overlying a higher density mantle. Crustal thickness variations can affect the long‐term,
M. T. Bland, A. I. Ermakov, C. A. Raymond, D. A. Williams, T. J. Bowling, F. Preusker, R. S. Park, S. Marchi, J. C. Castillo‐Rogez, R. R. Fu, C. T. Russell   +10 more
doaj   +1 more source

Reducing Cooling Costs for Sustainable Food Biomanufacturing With Thermotolerant Cupriavidus necator H16 Mutant

Biotechnology and Bioengineering, EarlyView.
With a thermotolerant C. necator mutant the SCP production costs can be decreased by $0.98/kg. ABSTRACT Autotrophic CO2 conversion to Single Cell Protein (SCP) using H2 and O2 is gaining commercial traction for food and feed production. Cupriavidus necator H16 is a key chassis organism for this “knallgas” fermentation, but industrial operation is ...
Lars Puiman, James Kemp Heffernan, Esteban Marcellin   +2 more
wiley   +1 more source

3D anatomy of the Cretaceous–Paleogene age Nadir Crater

Communications Earth & Environment
The Nadir Crater offshore West Africa is a recently proposed near K-Pg impact structure identified on 2D seismic. Here we present 3D seismic data that image this crater in exceptional detail, unique for any such structure, which demonstrates beyond ...
Uisdean Nicholson, William Powell, Sean Gulick, Thomas Kenkmann, Veronica J. Bray, Debora Duarte, Gareth S. Collins   +6 more
doaj   +1 more source