Results 141 to 150 of about 2,437 (254)

A new activity index for comets

, 1991
An activity index, AI, is derived from observational data to measure the increase of activity in magnitudes for comets when brightest near perihelion as compared to their inactive reflective brightness at great solar distances.
Whipple, Fred L.
core  

Observation and research on small solar system bodies based on the Antarctic Tianmu Staring Observation Project

Earth and Planetary Physics
The Antarctic Tianmu Staring Observation Project (ATSOP) entails the deployment of 30 small-aperture, wide-field optical telescopes in the Antarctic region.
JianChun Shi, Xian Shi, Man-To Hui, Anton Pomazan, Jian-Yang Li, Ning Liu, YingQi Wu, Dan Zhou, Jing Zhong, ZhengHong Tang, ShiYin Shen   +10 more
doaj   +1 more source

A comparative study on confirmation of endotracheal tube placement in patients undergoing intubation in emergency department with ultrasonography, clinical methods, and capnography

Hong Kong Journal of Emergency Medicine, Volume 33, Issue 3, June 2026.
Abstract Background and Objective Endotracheal intubation is a lifesaving procedure in critically ill patients. This study compared ultrasonography with 5‐point auscultation and the gold standard, quantitative waveform capnography, for confirming tube placement.
Nikhil Paul, Archu M J, Keerthana Manoharan K K, Amrithanand V T, Linu S M, James Paul   +5 more
wiley   +1 more source

Redox Regulation and Oxidative Stress in Health and Disease: Mechanisms and Therapeutic Targeting

MedComm – Future Medicine, Volume 5, Issue 2, June 2026.
Reactive species serve crucial roles which are tightly regulated in both physiological as well as disease states. At physiological levels, these species are integral to redox signaling, while uncontrolled redox promotes disease pathology. This review examines the dysregulation of these processes.
Mohammad Hossein Azadi, Azadeh Niknejad, Elaheh Amini   +2 more
wiley   +1 more source

Multilayer Cellulose Acetate–Viscose Films for Bio‐Based, Bio‐Degradable Packaging Applications

Packaging Technology and Science, Volume 39, Issue 6, Page 685-695, June 2026.
Cellulose acetate (CA) and cellulose foils stick together comprehensively after mild cellulose sodium hydroxide treatment and heated compression. For combined foils, water barrier properties correlate with CA thickness. Oxygen permeation suffers due to the sodium hydroxide pre‐treatment induced foil changes. The composite represents a biodegradable and
Florian Wurm, Anja Rosenzopf, Tung Pham, Thomas Bechtold   +3 more
wiley   +1 more source

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

Journal of Field Robotics, Volume 43, Issue 4, Page 2553-2584, June 2026.
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

Influence of Solar Sails on Magnetic Field Measurements in Space Plasmas

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Solar sail technology is ready to be deployed in a satellite mission carrying a science‐grade magnetometer. In preparation for such a mission, it is essential to characterize the interactions between the sail and the ambient plasma that could affect the magnetometer readings.
Konstantinos Horaites, Juan V. Rodriguez, Ying Liu   +2 more
wiley   +1 more source

Dormant Comets in the Near-Earth Asteroid Population

, 2015
The population of near-Earth objects comprises active comets and asteroids, covering a wide range of dynamical parameters and physical properties. Dormant (or extinct) comets, masquerading as asteroids, have long been suspected of supplementing the near ...
Mueller, Michael, Thomas, Cristina, Smith, Howard A., Emery, Josh P., Knight, Matthew, Mommert, Michael, Bottke, William F., Harris, Alan W., Hora, Joseph L., Delbo', Marco, Trilling, David E., Fazio, Giovanni   +11 more
core  

Impact and Crystallization Modeling of the Sudbury Basin and Its Implications for a Hadean Crust

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract The 1.85 Ga Sudbury Structure hosts Earth's largest and best‐preserved impact‐induced melt sheet, the Sudbury Igneous Complex (SIC), which crystallized into distinct noritic, gabbroic, and granophyric layers. We conduct impact simulations with iSALE‐2D and crystallization modeling using alphaMELTS 2 to track the formation and evolution of the ...
Nicolas B. Litza, Miki Nakajima, J. Brian Balta, Steven B. Shirey, Dustin Trail, Kim A. Cone, Ian Szumila, Rasmus Haugaard, Taus R. C. Jørgensen, Scott D. Hull, Michael R. Ackerson   +10 more
wiley   +1 more source

Modeling and Analysis of Main-belt Asteroidal Dust Flux and Velocity Distribution at Inner Planets

The Astrophysical Journal
Interplanetary dust in the inner solar system originates from multiple sources, including short-period comets and main-belt asteroids. In this work, we focus specifically on the dynamical evolution of asteroid-derived dust using N -body simulations that ...
Aanchal Sahu, Jayesh Pabari
doaj   +1 more source