Results 71 to 80 of about 308,768 (331)

Towards animal oriented rearing methods in organic production systems [PDF]

open access: yes, 2006
One of the foundations of organic animal production systems is that animals are kept in a more natural way. In terms of housing, animals get more space, have access to outside areas and are fed organic rations.

core  

How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts

open access: yesBiological Reviews, EarlyView.
ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen   +15 more
wiley   +1 more source

Loss, persistence and reversal of phenotypic traits

open access: yesBiological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni   +4 more
wiley   +1 more source

Evaluation of microwave landing system approaches in a wide-body transport simulator [PDF]

open access: yes
The objective of this study was to determine the suitability of flying complex curved approaches using the microwave landing system (MLS) with a wide-body transport aircraft.
Feather, J. B., Summers, L. G.
core   +1 more source

Migration speed, timing, and long‐term shifts in age structure in North American passerines during fall migration

open access: yesEcography, EarlyView.
Migration is challenging for birds, especially juveniles, who experience high mortality rates during migration. The challenge is exacerbated in the Anthropocene, contributing to widespread population declines. Conservation efforts focused on increasing juvenile survival could bolster population recovery.
Dylan M. Osterhaus   +2 more
wiley   +1 more source

Left Wanting and Left Unheard: A Dual Grievance Model of Populism Across Six European Countries

open access: yesEuropean Journal of Social Psychology, EarlyView.
ABSTRACT This study tests a dual grievance model of populism by examining whether relative deprivation and external political inefficacy are linked to two core dimensions of populist beliefs (people sovereignty and anti‐elitism) via aversive political emotions (anger, sadness and fear) and institutional distrust across six European countries (N = 5487).
Anna Cortijos‐Bernabeu   +2 more
wiley   +1 more source

Fault-free validation of a fault-tolerant multiprocessor: Baseline experiments and workoad implementation [PDF]

open access: yes
In the future, aircraft employing active control technology must use highly reliable multiprocessors in order to achieve flight safety. Such computers must be experimentally validated before they are deployed.
Feather, F., Segall, Z., Siewiorek, D.
core   +1 more source

Optimális éves viselkedési modellek: út a fiziológiától a populációkig? = Optimal annual routines: a path from physiology to populations? [PDF]

open access: yes, 2009
A pályázat fő célja annak kiderítése volt, hogy a különböző állapotváltozók hogyan befolyásolják az optimális viselkedést, speciálisan a hogyan befolyásolják a fő életmenet események időzítését az éves cikluson belül. E cél elérése érdekében több modellt
Alasdair, I. Houston   +3 more
core  

By‐product of heparin extraction as a sustainable alternative to enhance the use of nitrogen in agriculture

open access: yesEnvironmental Progress &Sustainable Energy, EarlyView.
Abstract This study evaluates the potential of a new organic fertilizer derived from porcine intestinal mucosa (designated BHE), a by‐product of the heparin extraction process, as a sustainable nitrogen (N) source for agriculture. The work was conducted in two stages: (i) chemical and spectroscopic characterization of BHE compared with poultry litter ...
Aline Zanquetti   +3 more
wiley   +1 more source

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