Results 101 to 110 of about 17,512,468 (321)

From distance sampling to spatial capture–recapture

open access: yes, 2017
Distance sampling and capture–recapture are the two most widely used wildlife abundance estimation methods. capture–recapture methods have only recently incorporated models for spatial distribution and there is an increasing tendency for distance ...
D. Borchers, T. Marques
semanticscholar   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Estimating bird abundance : making methods work [PDF]

open access: yes, 2008
In many bird monitoring Surveys, no attempt is made to estimate bird densities or abundance. instead, counts of one form or another are made, and these are assumed to correlate with bird density. Unless complete Counts Oil Sample plots are feasible, this
Marsden, Stuart J.   +2 more
core   +1 more source

Perched above the fields: density and habitat use of wintering raptors in an intensive farmland area in northern Italy

open access: yesAvocetta
The wintering period represents a critical stage for avian survival and population dynamics. However, systematic monitoring during this phase remains scarce compared to the extensive research dedicated to the reproductive period and migration. To address
Diego Rastelli   +2 more
doaj   +1 more source

Aerial vertical‐looking infrared imagery to evaluate bias of distance sampling techniques for white‐tailed deer

open access: yesWildlife Society Bulletin, 2014
Population monitoring requires techniques that produce estimates with low bias and adequate precision. Distance sampling using ground‐based thermal infrared imaging (ground imaging) and spotlight surveys is commonly used to estimate population densities ...
Jared T. Beaver   +8 more
doaj   +1 more source

Donor-Acceptor Distance Sampling Enhances the Performance of "Better than Nature" Nicotinamide Coenzyme Biomimetics.

open access: yesJournal of the American Chemical Society, 2016
Understanding the mechanisms of enzymatic hydride transfer with nicotinamide coenzyme biomimetics (NCBs) is critical to enhancing the performance of nicotinamide coenzyme-dependent biocatalysts. Here the temperature dependence of kinetic isotope effects (
A. Geddes   +4 more
semanticscholar   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Detectability in audio-visual surveys of tropical rainforest birds : the influence of species, weather and habitat characteristics [PDF]

open access: yes, 2015
This research was funded by the Australian Government’s National Environmental Research Program, the Stuart Leslie Bird Research Award from Birds Australia (http://www.birdsaustralia.com.au/), the Earthwatch Institute (http://www.earthwatch.org/australia/
Shoo, Luke P.   +11 more
core   +2 more sources

Abundance and density of lesser prairie‐chickens and leks in Texas

open access: yesWildlife Society Bulletin, 2013
Lesser prairie‐chickens (LEPCs; Tympanuchus pallidicinctus) have experienced population declines due to both direct and indirect habitat loss, including conversion of native rangeland to cropland and disturbance from energy development.
Jennifer M. Timmer   +4 more
doaj   +1 more source

Sample-Based Distance-Approximation for Subsequence-Freeness

open access: yesAlgorithmica
AbstractIn this work, we study the problem of approximating the distance to subsequence-freeness in the sample-based distribution-free model. For a given subsequence (word)$$w = w_1 \ldots w_k$$w=w1…wk, a sequence (text)$$T = t_1 \ldots t_n$$T=t1…tnis said to containwif there exist indices$$1 \le i_1< \cdots < i_k \le n$$1≤i1<⋯<ik≤nsuch ...
Omer Cohen Sidon, Dana Ron
openaire   +7 more sources

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