Results 81 to 90 of about 164,975 (347)
The variability of crater identification among expert and community crater analysts [PDF]
, 2014 The identification of impact craters on planetary surfaces provides important information about their geological history. Most studies have relied on individual analysts who map and identify craters and interpret crater statistics. However, little work has been done to determine how the counts vary as a function of technique, terrain, or between ...
arxiv +1 more source
Organic geochemistry of the Boltysh impact crater, Ukraine [PDF]
, 2009 The Boltysh crater has been know for several decades and was originally drilled in the 1960s - 1980s in a study of economic oil shale deposits. Unfortunately, the cores were not curated and have been lost.
Gilmour, Iain +3 more
core
Oxygen Doping in Ferroelectric Wurtzite‐type Al0.73Sc0.27N: Improved Leakage and Polarity Control
Advanced Electronic Materials, EarlyView.Left: Polarization hysteresis (P‐E) characteristics of 200 nm wurtzite‐type Al0.73Sc0.27N without (ref. Nmix = 0) and with O‐doping (Nmix = 8 and 15), showing a clear drop of leakage current with O‐doping. Right: Piezoresponse for microscopy showing the as‐deposited polarization reversal from nitrogen (Nmix = 0) to metal polarity (Nmix = 15) via mixed ...
Md Redwanul Islam +11 more
wiley +1 more source
Automated crater detection on Mars using deep learning [PDF]
, 2019 Impact crater cataloging is an important tool in the study of the geological history of planetary bodies in the Solar System, including dating of surface features and geologic mapping of surface processes. Catalogs of impact craters have been created by a diverse set of methods over many decades, including using visible or near infra-red imagery and ...
arxiv +1 more source
Advanced Electronic Materials, EarlyView.The composition of blends of 1,4,8,11‐tetramethyl‐6,13‐triethylsilylethynyl pentacene (TMTES) and polystyrene (PS) to be used in Organic Field‐Effect Transistors (OFETs) is optimized to achieve and enhance thin film crystallinity and a reduced charge trap density at the semiconductor/dielectric interface.
Maria Elisabetta Giglio +11 more
wiley +1 more source
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
The Effect of Antecedent Topography on Complex Crater Formation
Geophysical Research LettersImpact craters that form on every planetary body provide a record of planetary surface evolution. On heavily cratered surfaces, new craters that form often overlap antecedent craters, but it is unknown how the presence of antecedent craters alters impact
Don R. Hood +5 more
doaj +1 more source
Recent progress of geophysical exploration in Earth's impact craters
地球与行星物理论评Geophysical exploration plays an important role in detecting and studying impact structures. This article reviews the common geophysical features of Earth's impact craters, including their gravity, magnetic, electrical, and seismic characteristics.
Yangfan Deng +6 more
doaj +1 more source
Increase in cratering efficiency with target curvature in strength-controlled craters [PDF]
, 2017 Impact-cratering processes on small bodies are thought to be mainly controlled by the local material strength because of their low surface gravity, and craters that are as large as the parent bodies should be affected by the target curvature. Although cratering processes on planar surfaces in the strength-controlled regime have been studied extensively,
arxiv +1 more source
Sustainable Recovery and Reuse of Hard Carbon From Scrap and End‐of‐Life Sodium‐Ion Batteries
Advanced Energy Materials, EarlyView.As sodium‐ion battery (SIB) technology advances, sustainable end‐of‐life recycling is crucial. This study presents a direct recycling method for hard carbon (HC) using low‐temperature binder negation at 300 °C under nitrogen. Retaining structural integrity, recycled HC achieves 86–89% capacity retention over 200 cycles.
Bowen Liu +11 more
wiley +1 more source