Results 191 to 200 of about 43,562 (319)

Chemical constitutions in the Colour Index™: A century of colourant classification

open access: yesColoration Technology, EarlyView.
Abstract This article details how the Colour Index™ (CI) system categorises and unambiguously labels commercial dyes and pigments based upon their chemical constitutions. It outlines the current process by which colourants that are new to the market find a place within CI and acquire generic identifiers.
Andrew Towns
wiley   +1 more source

Protest and state policy agendas: Marches and gun policy after Parkland

open access: yesPolicy Studies Journal, Volume 50, Issue 4, Page 877-895, November 2022., 2022
Abstract Does protest spur the government to act at the regional or local level? Gun control in the United States offers a promising case for studying this question, due to considerable variation in both protest and policy‐making activity following the mass shooting in Parkland, FL in early 2018.
Yuko Sato, Jake Haselswerdt
wiley   +1 more source

Models of very-low-mass stars, brown dwarfs and exoplanets. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2012
Allard F, Homeier D, Freytag B.
europepmc   +1 more source

The rotation of brown dwarfs

open access: yes, 2016
One of the characteristic features of low-mass stars is their propensity to shed large amounts of angular momentum throughout their evolution. This distinguishs them from brown dwarfs which remain fast rotators over timescales of gigayears. Brown dwarfs with rotation periods longer than a couple of days have only been found in star forming regions and ...
openaire   +2 more sources

Norwegian lemmings, Lemmus lemmus: a case for a strong herbivore–plant interaction

open access: yesEcography, EarlyView.
In his classical contributions, Olavi Kalela proposed that, due to the low primary productivity of the tundra, Norwegian lemmings are locked in a strong interaction with their winter forage plants. Proposedly, Norwegian lemmings respond to the threat of critical resource depletion by conducting long‐range migrations at their population peaks.
Lauri Oksanen   +7 more
wiley   +1 more source

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