Results 131 to 140 of about 71,398 (288)
Plasma irregularities in the comet's tail [PDF]
The Astrophysical Journal, 1976 Scintillation theory is invoked to explain fluctuations in radio intensity observed during occultation of the extragalactic radio source PKS 2025-15 by the plasma tail of comet 1973 XII on Jan. 5, 1975. Plasma irregularities and turbulence in the tail of the comet (Kohoutek 1973f) are fitted to a Gaussian spectrum and to a Kolmogorov power-law spectrum
openaire +2 more sources
The wind-sock theory of comet tails [PDF]
A method is reported for calculating the shapes of ionic comet tails that use the magnetic field along the tail to channel the tail plasma. The local momentum field in the solar wind determines magnetic field line locations along the tail.
Brandt, J. C., Rothe, E. D.
core +1 more source
Journal of Oral Pathology &Medicine, EarlyView.ABSTRACT Introduction Fixed orthodontic appliances (OAs) expose the oral mucosa to mechanical traumas and metal ions throughout the whole orthodontic therapy. This review aims to understand the cytological and genetic changes consequent to fixed orthodontic therapy, their clinical implications, and how they can be assessed.
Francesco Paolo Modugno +6 more
wiley +1 more source
Morphology and development of the baculum in harbour seals (Phoca vitulina)
Journal of Zoology, EarlyView.This study examines the ontogenetic changes in the morphology of the penis bone in the harbour seal, focusing on the implications for sexual maturity and reproductive function. A large comparative dataset of approx. 300 genital bones from 1 year to over 20 years of age was used for analyses.
T. Berghäuser +3 more
wiley +1 more source
Ecogenotoxicity testing of aquatic environment by comet assay in plants
Frontiers in Genetics, 2015 One of the goals of environmental monitoring is the detection of potentially hazardous compounds in water. We have set up a standard method to apply the Comet assay in aquatic plants that could be of great interest to evaluate cytotoxicity, genotoxicity ...
Anita Mukherjee
doaj +1 more source
Sungrazer Comet C/2012 S1 (ISON): Curve of light, nucleus size, rotation and peculiar structures in the coma and tail [PDF]
arXiv, 2014 We present our results for comet (ISON). Our results were obtained with amateur telescopes observing from the ground, before and after the comet had passed conjunction with the Sun in August 2013. We measured a mean radius of 830 +- 245 m, and we have identified a persistent structure in the direction of the sun with a preliminary rotation period of ...
arxiv
Effects of lentiviral vectors on DNA damage of human dermal fibroblasts (HDFs) [PDF]
, 2015 In present study we evaluated the DNA damages and cytogenetic stability of transducted and non-transducted human dermal fibroblasts (HDFs) by enhanced green fluorescent protein (eGFP) lentiviral vector using karyotyping, comet assay, and molecular ...
Abdian, Narges. +7 more
core
Heavy‐duty conceptual engineering
Noûs, EarlyView.Abstract Conceptual engineering is the process of assessing and improving our conceptual repertoire. Some authors have claimed that introducing or revising concepts through conceptual engineering can go as far as expanding the realm of thinkable thoughts and thus enable us to form beliefs, hypotheses, wishes, or desires that we are currently unable to ...
Steffen Koch, Jakob Ohlhorst
wiley +1 more source
On the acceleration of the receding masses in the tail of Halley's comet 1910 June 6 [PDF]
, 1910 E. E. Barnard
openalex +1 more source