Comet nuclei - Open Access .click

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NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)

The Astrophysical Journal Letters
We report on the observation and measurement of astrometry, photometry, morphology, and activity of the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS) with the NSF-DOE Vera C. Rubin Observatory.
Colin Orion Chandler +305 more
doaj +1 more source

Six Outbursts of Comet 46P/Wirtanen

The Planetary Science Journal, 2021
Cometary activity is a manifestation of sublimation-driven processes at the surface of nuclei. However, cometary outbursts may arise from other processes that are not necessarily driven by volatiles.
Michael S. P. Kelley +37 more
doaj +1 more source

Cytogenotoxic and Molecular Assessment of Pyrethrins on Non‐Target Allium cepa Roots

Environmental Toxicology, EarlyView.
ABSTRACT The pyrethrins, which form a part of naturally occurring insecticidal chemicals derived from chrysanthemum flowers, not only provide rapid knockdown of a broad spectrum of insect pests but are also widely used in integrated pest management due to a generally favorable safety profile, largely attributed to low mammalian toxicity.
Yudum Yeltekin Uğur, Rahsan Ilikci‐Sagkan, Recep Liman +2 more
wiley +1 more source

Nuclear Spectra of Comet 28P Neujmin 1 [PDF]

, 2006
We present visible and near-IR spectra of the nucleus of comet 162P/Siding Spring (also known as 2004 TU12) obtained in 2004 December, while it had no detectable coma.
Ziffer, Julie, PhD +7 more
core +1 more source

Nuclear spectra of comet 28P Neujmin [PDF]

, 2007
We present visible and near-infrared spectra of the nucleus of comet 28P/Neujmin 1, obtained in 2001, 2002, and 2003, while it had no detectable coma.
Mothé-Diniz, Thais +7 more
core +1 more source

Quantitative collagen and proteoglycan imaging reveal organic layering, gradients and regional texture in young mature dental cementum

VIEW, EarlyView.
Cementum, the mineralized tissue covering all mammalian tooth roots, helps maintain tooth stability, but its internal organization is still poorly understood. In this study, we combine quantitative histologial methods to map the regional distributions of collagen fibers and proteoglycan‐rich matrix layers in porcine cementum.
Jie Zhen +3 more
wiley +1 more source

Late Pebble Accretion of Comet 81P/Wild 2 Nucleus: Evidence from a Plagioclase-bearing Chondrule Fragment, Pyxie

The Astrophysical Journal
Comet 81P/Wild 2 is a ∼4.5 km-sized primordial object that almost has not been modified by internal heating by ^26 Al decay. Its nucleus could have been formed by hierarchical agglomeration or gravitational collapse of pebble swarms concentrated by ...
Mingming Zhang +5 more
doaj +1 more source

Modified comet assays for the detection of cyclobutane pyrimidine dimers and oxidative base damages

Journal of Radiation and Cancer Research, 2017
The comet assay (also known as single-cell gel electrophoresis) is a technique for the detection of DNA damage at the level of the individual cell. It is a versatile, relatively simple to perform and sensitive method.
Ganesan Muthusamy +6 more
doaj +1 more source

RFP for the Comet Nuclei Tour (CONTOUR)

, 1999
This document describes the ASC Star Tracker (performance, functionality, requirements etc.) to The Johns Hopkins University - Applied Physics Laboratory for their Comet Nuclei TOUR (CONTOUR ...
Thuesen, Gøsta +7 more
core

Intervention outcomes of children with non‐degenerative dystonia and associated hyperkinetic movement disorders: A scoping review

Developmental Medicine &Child Neurology, EarlyView.
Abstract Aim To identify the outcomes reported in published studies of intervention approaches used with non‐degenerative childhood hyperkinetic movement disorders, including dystonia, dyskinesia, hypertonia, athetosis, chorea, cerebral palsy, involuntary movement, and kernicterus, and map them to the International Classification of Functioning ...
Hortensia Gimeno +10 more
wiley +1 more source

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