Results 101 to 110 of about 7,767,873 (255)
The effect of multiple encounters on short period comet orbits [PDF]
, 1972 The observed orbital elements of short period comets are found to be consistent with the hypothesis of derivation from long period comets as long as two assumptions are made.
Lowrey, B. E.
core
The FEBS Journal, EarlyView.DNA damage in the tardigrade Hypsibius exemplaris elicits distinct cellular outcomes depending on replication status. While non‐replicating cells tolerate genotoxic stress, constitutively replicating cells undergo irreversible replication failure upon DNA damage, leading to loss of tissue homeostasis, fat depletion, sterility, and organismal death ...
Gonzalo Quiroga‐Artigas +4 more
wiley +1 more source
The Origins of Ploem's Filter Cube: A Pandora's Box
Journal of Microscopy, EarlyView.Abstract Ploem's filter cube, central to modern epifluorescence microscopy, integrates three matched optical components: an excitation filter, an emission filter, and a dichroic mirror. Together, these elements enable the separation of excitation and emission light paths, producing high‐contrast fluorescence images.
Jack Gordon +3 more
wiley +1 more source
Comet 289P/Blanpain: Near-perihelion Activity and the Phoenicids
The Astronomical JournalWe present NEOWISE observations of Jupiter family comet 289P/Blanpain, the parent body of the Phoenicid meteoroid stream. Near-infrared images at 3.4 μ m (W1) and 4.6 μ m (W2) were obtained near perihelion on two occasions: UT 2019 October 30 (inbound ...
Toshihiro Kasuga
doaj +1 more source
Frontiers in Genetics, 2015 Various modifications of Comet Assay are widely used for efficiency analysis of the cellular DNA-integrity protecting system (Azqueta et al., 2014). The nucleoids of eukaryotic cells immobilized in agarose gel and lyzed were used as a substrate for DNA ...
Nikolay Petrovich Sirota
doaj +1 more source
A description of dental microanatomy and implantation geometry in Chamaeleonidae
Journal of Anatomy, EarlyView.A reassessment of the dental histology in adult chamaeleons reveals the presence of periodontal ligament. Alongside alveolar bone and cementum, these tissues together constitute a compacted and remodelled tripartite periodontium. Our findings include the novel observation of plicidentine‐like protuberances of dentine within underlying bone.
Giles D. Sukkert +4 more
wiley +1 more source
The Planetary Science JournalUnder favorable conditions, high-resolution long-slit infrared spectroscopic observations of comets can provide information on how ices are associated within the nucleus from spatially resolved properties of volatiles in the coma.
N. Dello Russo +10 more
doaj +1 more source
Journal of Anatomy, EarlyView.We reconstruct the major cranial musculature of the giant stem amphibian Mastodonsaurus giganteus, revealing a differentiated jaw‐adductor system, a probable sesamoid pulley, and previously unrecognised muscles. This EPB‐based case study establishes an anatomical framework for modelling feeding in early tetrapods and supports interpretations of ...
Daniel Schwarz +5 more
wiley +1 more source
On the Border: Searching for Cometary Activity near the Centaur–JFC Transition Line
The Planetary Science JournalCurrent wide-field surveys discover ∼15 Jupiter-family comets (JFCs) each year, typically identified via visual detection of a dust coma or tail. The same surveys also discover many asteroids that have distant JFC-like orbits, but with no reported ...
A. Fraser Gillan +4 more
doaj +1 more source
Journal of Paediatrics and Child Health, EarlyView.ABSTRACT Objective To evaluate contemporary clinical profiles and early neurodevelopmental outcomes of neonates admitted with hypoxic–ischemic encephalopathy (HIE) in an Australian tertiary perinatal unit. Study Design A retrospective cohort study (2019–2025) of neonates born ≥ 35 weeks' gestation admitted with a diagnosis of HIE.
Visothpong Chhoam +8 more
wiley +1 more source