Results 71 to 80 of about 12,935,991 (392)

Network topology drives population temporal variability in experimental habitat networks

open access: yesPopulation Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu   +3 more
wiley   +1 more source

Variations on a theme [PDF]

open access: yesCanadian Medical Association Journal, 2021
The facility was far uptown. We all dozed off during the long ride, and by the time the train lurched into the station, we were groggy. Though we were not native New Yorkers, three years in the city was enough to develop that uncanny ability to emerge from sleep just before missing your stop ...
openaire   +3 more sources

Regional Variation in Attitude of Mental Health Professionals Towards Tackling Illicit Drug-use and Drug-related Disorders [PDF]

open access: yes, 2017
This study sought to assess the attitudes of Mental Health Professionals (MHPs) towards tackling illicit drug use and drug-related disorders in Nigeria and to explore regional variations in attitude. Based on the validated Substance Abuse Attitude Survey
Akinola, O. (Olubusayo)   +3 more
core  

Interobserver reliability of radial head fracture classification : two-dimensional compared with three-dimensional CT

open access: yes, 2011
Background: The Broberg and Morrey modification of the Mason classification of radial head fractures has substantial interobserver variation. This study used a large web-based collaborative of experienced orthopaedic surgeons to test the hypothesis that ...
Guitton, Thierry G.   +3 more
core   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

open access: yesPopulation Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Reduced Neuronal Transcription of Escargot, the Drosophila Gene Encoding a Snail-Type Transcription Factor, Promotes Longevity

open access: yesFrontiers in Genetics, 2018
In recent years, several genes involved in complex neuron specification networks have been shown to control life span. However, information on these genes is scattered, and studies to discover new neuronal genes and gene cascades contributing to life ...
Alexander V. Symonenko   +5 more
doaj   +1 more source

Linkage variation and chromosome maps [PDF]

open access: yes, 1921
A recent paper in this journal by Detlefsen(1) is introduced as follows: "There is a well intrenched concept of recent genetics that hereditary factors or genes may be given fairly definite loci on chromosome maps and that these maps correspond to or ...
Sturtevant, A. H.
core   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

open access: yesPopulation Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Variation in form versus variation in meaning [PDF]

open access: yesLingua, 2004
Abstract The aim of this introductory article is to provide a background to the articles contained in this special issue of Lingua that centers around variation in form, variation in meaning, and markedness. Theoretical and empirical considerations are brought together in this special issue in which the linguistic disciplines that are covered ...
Hoop, H. de   +2 more
openaire   +2 more sources

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