Results 71 to 80 of about 32,395 (222)

Giant Frontal Sinus Mucocele With Headache and Vision Changes: Case Report

Clinical Case Reports, Volume 14, Issue 3, March 2026.
ABSTRACT Giant frontal sinus mucoceles, caused by ostial obstruction, can lead to severe complications such as headaches, vision impairment, and brain compression. Early diagnosis through imaging and prompt surgical intervention, such as craniotomy, is critical to remove mucopurulent debris and necrotic bone, preventing vision loss and intracranial ...
Sujan Ghimire, Ritika Bhatta, Yagya Raj Sharma, Vitasta Muskan, Alok Dahal   +4 more
wiley   +1 more source

Lucy Mission Search Plans for Activity around Its Jovian Trojan Flyby Targets

The Planetary Science Journal
Activity in small bodies, defined here as the episodic or continuous release of material, was long thought to be exclusively a behavior of comets, but it has since been discovered in some centaurs, main-belt asteroids, and near-Earth asteroids.
S. Alan Stern, Carly Howett, Neil Dello Russo, Harold A. Weaver, James F. Bell III, Dennis Reuter, Amy Simon, Hannah Kaplan, Keith Noll, John Spencer, Simone Marchi, Hal Levison   +11 more
doaj   +1 more source

Prediscovery Activity of New Interstellar Object 3I/ATLAS: Rapid Brightening from 6 to 4 au

The Astrophysical Journal Letters
We report on the prediscovery observations and constraints of the new interstellar comet 3I/2025 N1 (ATLAS), made by the Zwicky Transient Facility, for the inbound leg of the comet out to a heliocentric distance of r _h  = 17 au, or approximately a year ...
Quanzhi Ye, Michael S. P. Kelley, Henry H. Hsieh, Eric C. Bellm, Tracy X. Chen, Richard Dekany, Andrew Drake, Steven L. Groom, George Helou, Shrinivas R. Kulkarni, Thomas A. Prince, Reed Riddle   +11 more
doaj   +1 more source

Analysis of CCD images of the coma of comet P/Halley [PDF]

The modeling analysis objective of this project is to make use of the skill acquired in the development of Monte Carlo particle trajectory models for the distributions of gas species in cometary comae as a basis for a new dust coma model. This model will
Combi, Michael R.
core   +1 more source

The Infrared Diameter -- Velocity Dispersion Relation for Elliptical Galaxies [PDF]

, 1995
Using single channel infrared photometry from the literature, a provisional K-band diameter--velocity dispersion relation for elliptical galaxies in the Coma and Virgo clusters is derived. The Coma cluster relation has \~1.5 times lower scatter at K than
Gregg, Michael D.
core   +2 more sources

Infrared emission from dust in the Coma cluster of galaxies

The Astrophysical Journal, 1990
Detailed calculations of the infrared emission from collisionally heated dust in the Coma cluster are presented. The proposed model includes continuous dust injection from galaxies, grain destruction by sputtering, and transient grain heating by the hot plasma.
Eli Dwek, Yoel Rephaeli, John C. Mather
openaire   +1 more source

Drilling Within the Critical Zone

Hydrological Processes, Volume 40, Issue 3, March 2026.
This review synthesises 30 years of critical zone drilling methodologies for studying subsurface weathering, water storage, and biogeochemical processes. We evaluate drilling techniques, sampling strategies, downhole logging, and long‐term monitoring approaches while addressing contamination control and core preservation challenges.
Amanda Donaldson, Russell P. Callahan, W. Jesse Hahm, David N. Dralle, Anders Noren, Rachel E. Breunig, Berit M. Hudson Rasmussen, Laura V. Krone, Susan L. Brantley, A. Joshua West, Lin Ma, Clifford S. Riebe, Margaret Zimmer, Ashlee Dere, Daniella Rempe   +14 more
wiley   +1 more source

Hubble Space Telescope Observations of Main Belt Comet (596) Scheila

, 2011
We present Hubble Space Telescope Observations of (596) Scheila during its recent dust outburst. The nucleus remained point-like with absolute magnitude V(1,1,0) = 8.85+/-0.02 in our data, equal to the pre-outburst value, with no secondary fragments of ...
Bodewits, Bohren, Bowell, Bus, Dahlgren, Dressel, Howell, Kalirai, Larson, Schorghofer, Tedesco, Warner, Warner, Washburn   +13 more
core   +1 more source

Integrating Satellite Data Into Meso‐Scale Habitat Modeling for Non‐Perennial Rivers and Streams

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Non‐perennial rivers and streams (NPRs) are widespread and projected to become more common, yet effective tools for their characterization and management remain limited. This study introduces a novel approach to assess aquatic habitat availability in NPRs, applied to a regulated reach of the Sangone River (Northern Italy).
G. Negro, B. Pinna, G. Manfreda, P. Lo Conte, E. Belcore, P. Maschio, C. Cavallo, M. N. Papa, P. Vezza   +8 more
wiley   +1 more source

The First Detection of Molecular Activity in the Largest Known Oort Cloud Comet: ALMA Imaging of C/2014 UN271 (Bernardinelli–Bernstein) at 16.6 au from the Sun

The Astrophysical Journal Letters
We report observations of comet C/2014 UN271 (Bernardinelli–Bernstein) carried out on UT 2024 March 8 and 17 at a heliocentric distance ( r _H ) of 16.6 au using the Atacama Large Millimeter/submillimeter Array (ALMA).
Nathan X. Roth, Stefanie N. Milam, Martin A. Cordiner, Dominique Bockelée-Morvan, Nicolas Biver, Michael S. P. Kelley, Anthony J. Remijan, Steven B. Charnley, Carrie E. Holt, Kiernan D. Foster, Joseph Chatelain, Edward Gomez, Sarah Greenstreet, Tim Lister, Helen Usher   +14 more
doaj   +1 more source