Results 81 to 90 of about 116,804 (298)

At-sea abundance and distribution of skuas and jaegers (Charadriiformes: Stercorariidae) at coastal waters off central Chile [PDF]

open access: yes, 2014
Indexación: Web of Science; Scielo.BACKGROUND: Skuas and jaegers (Charadriiformes: Stercorariidae) are seabirds breeding at moderate to high latitudes and some perform extensive post-breeding transequatorial migrations.
Anguita, Cristóbal   +2 more
core   +1 more source

CAUIM: Amazonian Cassava‐Based Programmable Biocolloid

open access: yesAdvanced Intelligent Systems, EarlyView.
Bridging indigenous heritage and computation, this work introduces the usage of cauim, a traditional Amazonian cassava fermented beverage, as a programmable memristive‐like substrate and resistance switching. The material exhibits frequency‐dependent dynamics enabling reconfigurable Boolean logic operations.
Raphael Fortulan   +5 more
wiley   +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  

Application of Species Distribution Modeling for Avian Influenza surveillance in the United States considering the North America Migratory Flyways. [PDF]

open access: yes, 2016
Highly Pathogenic Avian Influenza (HPAI) has recently (2014-2015) re-emerged in the United States (US) causing the largest outbreak in US history with 232 outbreaks and an estimated economic impact of $950 million.
Alkhamis, Moh A   +2 more
core   +1 more source

Integrated Evaluation of Contaminant Profiles, Detection Techniques, and Management Strategies for Tannery Sludge

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This review article critically examines the environmental and health hazards of tannery sludge (TS), a complex by‐product of the leather tanning industry. TS is characterized by a diverse array of contaminants, including heavy metals like chromium, organic pollutants such as polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds ...
Yashar Aryanfar   +10 more
wiley   +1 more source

Possible steps in the evolutionary development of bird navigation [PDF]

open access: yes
Hypotheses are presented to explain the evolutionary development of navigational ability in migratory birds. Areas of discussion to describe the possible techniques are: (1) sun compass, (2) bicoordinate navigation, (3) star compass, (4) wind cues, (5 ...
Bellrose, F. C.
core   +1 more source

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

open access: yesThe Anatomical Record, EarlyView.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano   +3 more
wiley   +1 more source

FLAP Birds—Dealing with Migratory Birds

open access: yesWildlife Rehabilitation Bulletin, 2010
During spring and fall migrations, birds migrating during the night are attracted by city lights and often collide with Toronto high–rise buildings. Birds also crash into windows during the day as the reflections create an illusion of open sky. Toronto Wildlife Centre (TWC) works with the Fatal Light Awareness Program (FLAP) to assess and treat the ...
openaire   +1 more source

Flight directions of passerine migrants in daylight and darkness: A radar and direct visual study [PDF]

open access: yes
The application of radar and visual techniques to determine the migratory habits of passerine birds during daylight and darkness is discussed. The effects of wind on the direction of migration are examined.
Gauthreaux, S. A., Jr.
core   +1 more source

Survival rates of captive-bred Asian Houbara Chlamydotis macqueenii in a hunted migratory population [PDF]

open access: yes, 2016
Asian Houbara Chlamydotis macqueenii numbers are declining owing to unsustainable levels of hunting and poaching, with the main conservation response being population reinforcement through the release of captive-bred birds.
Burnside, Robert   +3 more
core   +1 more source

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