Results 141 to 150 of about 195,761 (306)

An Investigation into the Variability of Luminous Blue Variable Stars with TESS

open access: yesThe Astronomical Journal
Luminous blue variables (LBVs) are enigmatic, evolved, massive stars. Their variability has been observed to be episodic with large eruptions, along with variations on timescales of days to decades.
Becca Spejcher   +5 more
doaj   +1 more source

Ohio Economic Insects and Related Anthropods [PDF]

open access: yes, 1989
PDF pages ...
Albrecht, Carl W.   +16 more
core  

1166. Helianthus occidentalis Riddell

open access: yesCurtis's Botanical Magazine, EarlyView.
Summary Helianthus occidentalis Riddell (Compositae: Heliantheae: Helianthinae) is described and illustrated. The species' placement in the genus is commented on, as are the differences in infrageneric placement of the other species Heiser originally grouped H. occidentalis with.
Nicholas Hind, Christabel King
wiley   +1 more source

Kant's Solution to the Trilemma of Concept Formation

open access: yesEuropean Journal of Philosophy, EarlyView.
Abstract According to a widespread assumption, Kant's logical account of concept formation starts with comparison, where the latter involves concepts. On this assumption, the formation of a concept presupposes other concepts, so that the argument is threatened either by circularity, regress, or break‐off.
Daniel Erlewein
wiley   +1 more source

Putting away childish things: incidents of recovery in Tolkien and Haddon [PDF]

open access: yes, 2008
The article discusses the philosophy of author J.R.R. Tolkien. Borrowing concepts from Gerard Manley Hopkins and John Duns Scotus, Tolkien developed the concept of recovery, in which a person is able to interact with the world as though they have never ...
Vincent, A.M.
core  

A protracted phenology: Post‐diapause larval development of a threatened butterfly

open access: yesInsect Conservation and Diversity, EarlyView.
Larval survival during diapause was high; hibernaculum webs were mostly located near Succisa pratensis plants, which often retained vital leaves through winter. Post‐diapause developmental time varied strongly depending on exposure to different microclimates, being reduced by litter cover, solar radiation and a higher heat load index.
Gwydion Scherer, Thomas Fartmann
wiley   +1 more source

The Effect of Disturbance on Plant Communities in Tundra Regions of the Soviet Union [PDF]

open access: yes, 1979
An Annotated List of Plants Inhabiting Sites of Natural and Anthropogenic Disturbances of Tundra Cover: Southeasternmost Chukchi Peninsula -- B.A. Yurtsev and A.A.
Druzhinina, O.A.   +4 more
core  

Demonstration of an instream flow model to accommodate a threatened tiger beetle in riverine dune habitat

open access: yesInsect Conservation and Diversity, EarlyView.
Burrows of the threatened Gibson's Big Sand Tiger Beetle in riverine dune habitats are susceptible to flooding through managed flows. HEC‐RAS modelling identified the flow thresholds above which flooding would occur for burrows and affect the beetle larvae. These findings provide instream flow guidelines for conserving this threatened species and guide
Iain D. Phillips   +2 more
wiley   +1 more source

Signatures of Electromagnetic and Sound Radiation Produced by Gravitational Waves in Core-collapse Supernovae

open access: yesThe Astrophysical Journal
This paper presents the scenario that gravitational waves, generated in the core collapse of a pre-supernova star, can produce both electromagnetic radiation and sound radiation as gravitational waves propagate outward from the collapsing core. While the
Preston Jones   +2 more
doaj   +1 more source

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