Results 151 to 160 of about 291,896 (358)
A Study of the Monochromatic Polarization of Comet Arend-Roland (1956 h) [PDF]
, 1957 D. E. Blackwell, R. V. Willstrop
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Drug Testing and Analysis, EarlyView.The study provides information about the impact of physiological gastric conditions on the unbeneficial occurrence of nitrosamine drug substance–related impurities (NDSRIs). Both main factors for nitrosation in the form of acidic conditions and the presence of nitrite were adequately chosen for triggering the conversion of drug compounds into NDSRIs ...
Matthias Vogel +5 more
wiley +1 more source
Chemical abundance of comets [PDF]
Observations of NH2, (OI) and molecular ion spectra in comets represent virtually all of the volatile fraction of a comet nucleus. Their study leads to the N2, NH3, H2O, CO2, CO content of the nucleus, and thus to important constraints on models of comet
Wehinger, Peter, Wyckoff, Susan
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A photometric search for active Main Belt asteroids
, 2014 It is well known that some Main Belt asteroids show comet-like features. A representative example is the first known Main Belt comet 133P/(7968) Elst-Pizarro. If the mechanisms causing this activity are too weak to develop visually evident comae or tails,
Cikota, A. +4 more
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On Sir Isaac Newton's Method of Determining the Parabolic Orbit of a Comet [PDF]
, 1925 A. N. Kriloff
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Inventory of the volatiles on comet 67P/Churyumov-Gerasimenko from Rosetta/ROSINA
, 2015 The ESA Rosetta spacecraft (S/C) is tracking comet 67P/Churyumov-Gerasimenko in close vicinity. This prolonged en- counter enables studying the evolution of the volatile coma composition. Aims. Our work aims at comparing the diversity of the coma of 67P/
L. L. Roy +17 more
semanticscholar +1 more source
Environmental and Molecular Mutagenesis, EarlyView.Abstract Quantitative risk assessments of chemicals are routinely performed using in vivo data from rodents; however, there is growing recognition that non‐animal approaches can be human‐relevant alternatives. There is an urgent need to build confidence in non‐animal alternatives given the international support to reduce the use of animals in toxicity ...
Marc A. Beal +14 more
wiley +1 more source
Radiogenic heating in comets: A computational study from an astrobiological perspective
Open AstronomyOver the past two decades, interstellar dust and cometary material have been found to include a significant content of organic and biogenic molecules.
Abubacker Thaskeena Angeveettil +2 more
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