Results 101 to 110 of about 549,270 (251)
On the Early Thermal Processing of Planetesimals during and after the Giant Planet Instability
The Planetary Science JournalBorn as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets’ dynamical instability in the early stages of our solar system’s history.
Anastasios Gkotsinas +4 more
doaj +1 more source
Nuclear Physics B, 2018 The muon-to-electron conversion in aluminum, titanium and gold nuclei is studied in the context of a class of mirror fermion model with non-sterile right-handed neutrinos having masses at the electroweak scale.
P.Q. Hung +3 more
doaj +1 more source
Analytical study of comet nucleus samples [PDF]
Analytical procedures for studying and handling frozen (130 K) core samples of comet nuclei are discussed. These methods include neutron activation analysis, x ray fluorescent analysis and high resolution mass ...
Albee, A. L.
core +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 +2 more
wiley +1 more source
Reversal of Spin: Comet 41P/Tuttle–Giacobini–Kresak
The Astronomical JournalThe rotations of cometary nuclei are known to change in response to outgassing torques. The nucleus of the Jupiter-family comet 41P/Tuttle–Giacobini–Kresak exhibited particularly dramatic rotational changes when near perihelion in 2017 April.
David Jewitt
doaj +1 more source
The nucleus of 103P/Hartley 2, target of the EPOXI mission
, 2010 103P/Hartley 2 was selected as the target comet for the Deep Impact extended mission, EPOXI, in October 2007. There have been no direct optical observations of the nucleus of this comet, as it has always been highly active when previously observed.
C. Snodgrass +14 more
core +1 more source
British Journal of Pharmacology, Volume 183, Issue 11, Page 2947-2968, June 2026.Background and Purpose Endometriosis is a chronic, hormone‐dependent disorder characterized by ectopic implantation of endometrial tissue, often accompanied by pain and infertility. Although the progesterone receptor modulator RU486 is effective for pain relief, its impact on lesion regression is limited, possibly due to apoptosis resistance and ...
Yujie Peng +10 more
wiley +1 more source
A survey of debris trails from short-period comets
, 2007 We observed 34 comets using the 24 micron camera on the Spitzer Space Telescope. Each image contains the nucleus and covers at least 10^6 km of each comet's orbit. Debris trails due to mm-sized or larger particles were found along the orbits of 27 comets;
Kelley, Michael S. +2 more
core +1 more source
The FASEB Journal, Volume 40, Issue 9, 15 May 2026.Three weeks of fasting‐mimicking diet in female C57BL/6J mice increased pancreatic BNR4+ cells, PDX1+BRN4+ cells and insulin+glucagon+ cells after fasting in fluorescent multiplexed immunohistochemistry. Mice showed impaired glucose tolerance after fasting but not after refeeding after 2 weeks.
Clemens M. Harer +13 more
wiley +1 more source
Advanced Science, Volume 13, Issue 25, 4 May 2026.TRIM25 acts as a multifunctional hub driving intervertebral disc degeneration under mechanical stress. Mechanical compression significantly upregulates TRIM25 expression, establishing it as a key E3 ubiquitin ligase platform. TRIM25 targets PARG and Ku80 via distinct molecular interfaces, triggering their ubiquitination and degradation.
Zhangrong Cheng +9 more
wiley +1 more source