Results 41 to 50 of about 5,272 (187)

Plaque Morphology‐Dependent Regression of Tandem Coronary Plaques Under Intensive Lipid‐Lowering Therapy

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT We report a 54‐year‐old woman with stable angina who exhibited heterogeneous responses of tandem left anterior descending artery (LAD) plaques to intensive lipid‐lowering therapy. Coronary CT angiography performed at another hospital suggested diffuse disease, and she presented to our clinic for a second opinion.
Yong‐Lee Kim, Hyoun‐Woo Noh, Chang‐Ok Seo, Jeong Rang Park, KyeHwan Kim, Hye Ree Kim, Jin‐Yong Hwang, Min Gyu Kang, Hangyul Kim, Jin‐Sin Koh   +9 more
wiley   +1 more source

Field‐free programmable bipolar magnetic heterostructures for neuromorphic computing

InfoMat, EarlyView.
Neuromorphic computing mimics the brain's efficiency, yet typical memristors lack biological synapses' dual signal control. We introduce a magnetic memristor enabling bidirectional, multi‐state modulation without external fields, validated in image feature extraction and neural clustering.
Yaping He, Gaofei Wang, Jinfeng Zhai, Wentao Huang, Zhenyu Zhao, Zheng Zhang, Jiabin Shen, Pan He, Zengguang Cheng, Peng Zhou   +9 more
wiley   +1 more source

Erosion Rate Measurements for DART Spacecraft Ion Propulsion System

Applied Sciences, 2022
The Double Asteroid Redirection Test (DART) spacecraft was developed to provide the first measurement for orbital deflection of an asteroid upon intentional impact. The NEXT ion engine is part of the mission, on its maiden voyage.
Mark W. Crofton, Donner T. Schoeffler, Jason A. Young, Michael J. Patterson   +3 more
doaj   +1 more source

Mikrometeorite und ihr Ursprung im Sonnensystem: Außerirdischer Staub zum Anfassen

Physik in unserer Zeit, EarlyView.
Mit einer Größe, die der Dicke eines Haares entspricht, sind Mikrometeorite kaum sichtbar für das bloße Auge. Dennoch werden sie seit etwa 150 Jahren gesammelt, und seit wenigen Jahren sogar auf unseren Hausdächern. Als Kostproben von Asteroiden oder Kometen stellen sie wertvolle Boten unseres Sonnensystems dar.
Jenny Feige
wiley   +1 more source

A Post‐Launch Summary of the Science of NASA's Psyche Mission

AGU Advances
Astronomical observations indicate that asteroid (16) Psyche is a large, high‐density (likely >3,400 kg·m−3), metal‐rich (30–55 vol. %) asteroid. Psyche may be remnant core material or it could be a primordial, undifferentiated metal‐rich object.
Steven D. Dibb, Erik Asphaug, James F. Bell, Richard P. Binzel, William F. Bottke, Saverio Cambioni, John M. Christoph, Linda T. Elkins‐Tanton, Ralf Jaumann, David J. Lawrence, Rona Oran, Joseph G. O’Rourke, Carol Polansky, Benjamin P. Weiss, Mark Wieczorek, David. A. Williams   +15 more
doaj   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

Asteroids

, 2015
Where do asteroids come from and what are they made of? What clues do they hold about the evolution of the Solar System? Scientists have catalogued hundreds of thousands of asteroids, and many are thought to contain water and amino acids, the building blocks of life. Michael Shepard tells the fascinating story of their discovery, and what they can tell
CELLINO, Alberto, Gil-Hutton, R., Belskaya, I. N.   +2 more
  +5 more sources

Pyroxene and Hydroxyl Signatures in Vesta Newly Calibrated Data from Dawn Mission

Universe, 2023
Thanks to the VIR spectrometer onboard NASA’s Dawn spacecraft, which orbited Vesta in 2011–2012, thousands of hyperspectral images of its surface have been collected.
Giuseppe Massa, Andrea Longobardo, Ernesto Palomba, Marianna Angrisani, Chiara Gisellu, Fabrizio Dirri, Maria Cristina De Sanctis, Andrea Raponi, Filippo Giacomo Carrozzo, Mauro Ciarniello   +9 more
doaj   +1 more source

Asteroids [PDF]

Symposium - International Astronomical Union, 1986
Using a number of different conventional observing methods of astronomy like spectrophotometry, polarimetry, IR-radiometry and UBV-photometry, physical properties of asteroids can be derived, such as diameters, spectral reflectivity and albedo. Based on observable parameters a classification in terms of taxonomic types can be made and the mineralogy of
openaire   +1 more source

Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review

SmartBot, EarlyView.
Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen, Yixin Zhu, Mingxia Bao, Ting Zhang, Jun Wu, Jingbin Hao, Dezheng Hua, Xinhua Liu   +7 more
wiley   +1 more source