Results 91 to 100 of about 225,630 (329)

Transcriptomic analyses of regenerating adult feathers in chicken

open access: yesBMC Genomics, 2015
Feathers have diverse forms with hierarchical branching patterns and are an excellent model for studying the development and evolution of morphological traits.
C. Ng   +16 more
semanticscholar   +1 more source

Baseline Characteristics of Pristine Agricultural Pods Biochar

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The valorization of agricultural pod wastes into biochar offers a sustainable pathway for waste management and the development of functional carbonaceous materials. This study comparatively evaluates biochars produced from cocoa, flamboyant, and locust bean pods using an autothermal top‐lit updraft gasifier with retort heating, a system ...
Bolaji Ibrahim Busari   +8 more
wiley   +1 more source

Under the Wing of a Creature of the Night

open access: yes, 2017
Magnificent in its sheer power and beauty, this owl wing has a wingspan of 18 inches and measures 10 inches from the shoulder bone to the secondary feathers.
Chin, Julia M.
core  

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  

Animal‐mediated seed dispersal: A review of study methods

open access: yesApplications in Plant Sciences, EarlyView.
Abstract By dispersing seeds, animals provide ecological functions critical for the ecology, evolution, and conservation of plants. We review quantitative and empirical approaches and emerging technologies to quantify processes and patterns of animal‐mediated seed dispersal (zoochory) across its phases: from predispersal to postdispersal.
Noelle G. Beckman   +10 more
wiley   +1 more source

Stable isotope analysis provides new information on winter habitat use of declining avian migrants that is relevant to their conservation [PDF]

open access: yes, 2012
Winter habitat use and the magnitude of migratory connectivity are important parameters when assessing drivers of the marked declines in avian migrants. Such information is unavailable for most species.
BJM Stutchbury   +59 more
core   +4 more sources

Molecular composition and ultrastructure of Jurassic paravian feathers

open access: yesScientific Reports, 2015
Feathers are amongst the most complex epidermal structures known and they have a well-documented evolutionary trajectory across non-avian dinosaurs and basal birds.
J. Lindgren   +15 more
semanticscholar   +1 more source

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

open access: yesThe Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae   +4 more
wiley   +1 more source

The Isolation and Identification of Bacteria on Feathers of Migratory Bird Species

open access: yesMicroorganisms, 2018
Worldwide, bacteria are the most ubiquitous microorganisms, and it has been extensively demonstrated that migratory wild birds can increase bacterial global scale dispersion through long-distance migration and dispersal. The microbial community hosted by
Antonella Giorgio   +4 more
doaj   +1 more source

Evolution of breeding plumages in birds: A multiple‐step pathway to seasonal dichromatism in New World warblers (Aves: Parulidae)

open access: yesEcology and Evolution, 2020
Many species of birds show distinctive seasonal breeding and nonbreeding plumages. A number of hypotheses have been proposed for the evolution of this seasonal dichromatism, specifically related to the idea that birds may experience variable levels of ...
Ryan S. Terrill   +2 more
doaj   +1 more source

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