Results 81 to 90 of about 550,699 (320)
Tellus A: Dynamic Meteorology and Oceanography, 1957 According to Biermann’s theory the repulsive force in comet tails is due to a corpuscular radiation from the sun. It is shown that some of the difficulties of this theory can be overcome if the assumed radiation consists of beams with a frozen-in magnetic field of the same type as required in the electric field theory of magnetic storms and aurorae ...
openaire +2 more sources
Dendritic organization of actin comet tails [PDF]
Current Biology, 2001 Polymerization of actin filaments is necessary for both protrusion of the leading edge of crawling cells and propulsion of certain intracellular pathogens, and it is sufficient for generating force for bacterial motility in vitro. Motile intracellular pathogens are associated with actin-rich comet tails containing many of the same molecular components ...
Lisa A. Cameron +4 more
openaire +3 more sources
AutoComet: A fully automated algorithm to quickly and accurately analyze comet assays
Redox Biology, 2023 DNA damage is a common cellular feature seen in cancer and neurodegenerative disease, but fast and accurate methods for quantifying DNA damage are lacking.
Lise Barbé +6 more
doaj
Probing the Solar Wind Acceleration Region with the Sun--Grazing Comet C/2002 S2 [PDF]
, 2014 Comet C/2002 S2, a member of the Kreutz family of Sungrazing comets, was discovered in white light images of the SOHO/LASCO coronagraph on 2002 September 18 and observed in \hi\, \lya\, emission by the SOHO/UVCS instrument at four different heights as it approached the Sun.
arxiv +1 more source
Tycho Brahe, Abu Mashar, and the comet beyond Venus (ninth century A.D.) [PDF]
Journal for the History of Astronomy 47, 136, 2016, 2016 From his observations of the A.D. 1572 super-nova and the A.D. 1577 comet, Tycho Brahe concluded that such transient celestial objects are outside the Earth's atmosphere, and he quoted the 9th century A.D. Persian astrologer and astronomer Abu Mashar: Dixit Albumasar, Cometa supra Venerem visus fuit, i.e.
arxiv +1 more source
Cytoskeleton, EarlyView.ABSTRACT Enteropathogenic Escherichia coli (EPEC) causes diarrheal disease. Once ingested, these extracellular pathogens attach to the intestinal epithelial cells of their host, collapse the localized microvilli, and generate actin‐rich structures within the host cells that are located beneath the attached bacteria, called “pedestals.” Palladin is an ...
Kaitlin M. Bruzzini +2 more
wiley +1 more source
Comparison Between Different DNA and Conventional
مجله كليه طب الكندي, 2012 Background: The discriminative power of the classical WHO parameters in relation to male fertility is quite low, because they only address few aspects of sperm quality and function.
Estabraq . , A Rasool1 +2 more
doaj
The Astrophysical JournalCometary tails display dynamic behavior attributed to interactions with solar wind structures. Consequently, comet-tail observations can serve as in situ solar wind monitors.
Sarah R. Watson +3 more
doaj +1 more source
Genes and Environment, 2021 Background The in vivo comet assay is used to evaluate the genotoxic potential of compounds by detecting DNA strand breaks in cells isolated from animal tissue.
Haruna Tahara +3 more
doaj +1 more source
Comparison of comet assay parameters for estimation of genotoxicity by sum of ranking differences [PDF]
, 2013 Genotoxic potential of waters in six rivers and reservoirs from Serbia was monitored in different tissues of chub (Squalius cephalus L. 1758) with the alkaline comet assay.
Gačić, Z. +6 more
core +1 more source