Results 221 to 230 of about 28,782 (282)

Linking the Ultraviolet Index to the “shadow rule” for sun protection: A theoretical model applied with a southern hemisphere example

open access: yesPhotochemistry and Photobiology, EarlyView.
We demonstrate the potential utility of the shadow rule and how it may be understood in relation to the UV Index. The shadow rule indirectly determines the sun's altitude by observing the length of a person's shadow during the course of the day. When the shadow cast by the sun on a horizontal surface is shorter than the height of the person casting the
Caradee Y. Wright   +4 more
wiley   +1 more source

Characterization of luciferase from an Indian firefly Abscondita sp. (Coleoptera: Lampiridae)

open access: yesPhotochemistry and Photobiology, EarlyView.
(Left panel) Abscondita sp. (Lampyridae) collected in Guwahati, India. Scale bar = 5 mm. ( Right panel) Spectrum analysis of recombinant luciferase derived from this species at different pH. Unlike the other Lampyridae luciferases, this one showed pH insensitivity.
Yasuo Mitani   +5 more
wiley   +1 more source

Inherent constraints on imagistic imagination

open access: yesPhilosophy and Phenomenological Research, EarlyView.
Abstract A common and influential view sees imagistic imagining as an inherently free and unbounded type of thought that can nevertheless be subjected to epistemic constraints in individual instances. On this view, epistemic constraints can be imposed on imagistic imaginings to varying degrees, or not at all. The application of such constraints is said
Peter Langland‐Hassan
wiley   +1 more source

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