Results 21 to 30 of about 9,528 (210)

The sero-prevalence of Toxoplasma gondii in British marine mammals

open access: yesMemorias do Instituto Oswaldo Cruz, 2009
Serum samples from 101 stranded or bycatch cetaceans from British waters were screened for Toxoplasma gondii-specific antibodies using the Sabin Feldman Dye Test.
Dan Forman   +3 more
doaj   +1 more source

Revision of the types of species of Alloxysta described by Cameron and Fergusson (Hymenoptera: Figitidae: Charipinae) and deposited in the Natural History Museum (London), including a key to the fauna of Great Britain [PDF]

open access: yes, 2013
Type material of the species of Alloxysta described by Cameron and Fergusson and deposited in the Natural History Museum of London has been revised. Seven species are considered valid: Alloxysta abdera Fergusson, 1986, A.
Ferrer-Suay, Mar   +3 more
core   +3 more sources

Effect of Leading Edge Protuberance on Thrust Production of a Dynamically Pitching Aerofoil [PDF]

open access: yes, 2017
The paper presents a computational analysis of the characteristics of a NACA 634-021 aerofoil modified by incorporating sinusoidal leading-edge protuberances at Re = 14,000.
Benaissa, M.   +3 more
core   +2 more sources

Structure and Dynamics of Humpback Whales Competitive Groups in Ecuador [PDF]

open access: yesAnimal Behavior and Cognition, 2015
We assessed the social structure and behavior of humpback whale (Megaptera novaeangliae) competitive groups off Ecuador between July and August 2010. During this time we followed 185 whales in 22 competitive groups for 41.45 hr.
Fernando Félix, Johana Novillo
doaj   +1 more source

Direct numerical simulations of the flow around wings with spanwise waviness at a very low Reynolds number [PDF]

open access: yes, 2017
Inspired by the pectoral flippers of the humpback whale, the use of spanwise waviness in the leading edge has been considered in the literature as a possible way of improving the aerodynamic performance of wings.
Meneghini, JR, Serson, D, Sherwin, SJ
core   +1 more source

The enigmatic whale: the North Atlantic humpback

open access: yesNAMMCO Scientific Publications, 2009
We know more about the North Atlantic humpback whale (Megaptera novaeangliae) than we do for virtually any other cetacean, yet attempts to use this information to describe the status of the populations in this ocean basin have not proven satisfactory ...
Tim D Smith, Daniel G Pike
doaj   +1 more source

Apistogramma megaptera (Perciformes: Cichlidae), una nueva especie para la cuenca del Orinoco

open access: yesBiota Colombiana, 2011
Se describe una nueva especie, Apistogramma megaptera (Perciformes: Cichlidae), distribuida en la cuenca alta del Orinoco (ríos Inírida, Atabapo y Mavaca) de Venezuela y Colombia.
Lina M. Mesa Salazar, Carlos A. Lasso
doaj   +3 more sources

Impacts of Whale Watching on the Behavior of Humpback Whales (Megaptera novaeangliae) in the Coast of Panama

open access: yesFrontiers in Marine Science, 2020
Ecotourism focused on whales and dolphins has become a popular activity and an important source of revenue for many countries. Whale watching is vital to supporting conservation efforts and provides numerous benefits to local communities including ...
Arielle M. Amrein   +9 more
doaj   +1 more source

Perceptually Motivated Wavelet Packet Transform for Bioacoustic Signal Enhancement [PDF]

open access: yes, 2008
A significant and often unavoidable problem in bioacoustic signal processing is the presence of background noise due to an adverse recording environment. This paper proposes a new bioacoustic signal enhancement technique which can be used on a wide range
Cohen I.   +8 more
core   +2 more sources

Crustáceos ectoparásitos y epibiontes de ballenas jorobadas, Megaptera novaeangliae (Cetacea: Balaenopteridae) en el Pacífico colombiano

open access: yesCuadernos de investigación UNED, 2011
Se registran tres especies de crustáceos ectoparásitos y epibiontes en dos ballenatos y cuatro adultos de ballena jorobada (Megaptera novaeangliae) que visitaron el PNN Gorgona y Bahía Málaga en el Pacífico colombiano, en la temporada reproductiva del ...
Isabel Cristina Avila   +2 more
doaj   +1 more source

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