Results 151 to 160 of about 43,943 (330)

Genetic and Ecological Management of Pacific Salmon Fisheries for the 21st Century

Fisheries Management and Ecology, EarlyView.
ABSTRACT Based on ecological adaptation theory, tremendous effort is being spent on measures that are eliminating salmon hatcheries and fishing opportunities with the intention of protecting wild runs deemed to be of particular genetic importance to the survival of the species.
Randall E. Brummett, Ian G. Cowx, Devin M. Bartley   +2 more
wiley   +1 more source

Model investigation of inlet plenum flow straightening techniques for altitude test facility [PDF]

An investigation was conducted to evaluate and improve the quality of the airflow to be supplied to the engine in altitude test chambers 3 and 4 of the Propulsion Systems Laboratory at the Lewis Research Center.
Linke, H. G., Riddlebaugh, S. M.
core   +1 more source

Mapping Escolar (Lepidocybium flavobrunneum) in Motion: Oceanographic Forces Shaping Its Habitat in the Southwestern South Atlantic, With Insights From Fishers' Perceptions

Fisheries Oceanography, EarlyView.
ABSTRACT Lepidocybium flavobrunneum [Smith, 1843], commonly known as escolar, is a large pelagic species, important for global and local fisheries, particularly in the southwestern South Atlantic Ocean (SWAO), where it constitutes a significant portion of the catch.
Lucas Rodrigues, Maria Grazia Pennino, Paul Gerhard Kinas, David Conesa, Alba Fuster‐Alonso, Andrés Domingo, Rodrigo Forselledo, Federico Mas, Bruno Mourato, Rodrigo Sant'Ana, Vinni Santos Thykjaer, Raquel Virginia Marquez Marquez, Abner Ventura Alves, Mariano Cabanillas‐Torpoco, Rafael Schroeder, Luis Gustavo Cardoso   +15 more
wiley   +1 more source

Wind tunnel tests on airfoil boundary control using a backward opening slot [PDF]

This report presents the results of an investigation to determine the effect of boundary layer control on the lift and drag of an airfoil equipped with a backward opening slot. Various slot locations, widths of opening, and pressures, were used.
Bamber, Millard J, Knight, Montgomery
core   +1 more source

The state of knowledge on four families of Syngnathoidei fishes (Teleostei: Syngnathiformes): Aulostomidae, Centriscidae, Fistulariidae and Solenostomidae

Journal of Fish Biology, EarlyView.
Abstract Knowledge on the ecology and life‐history traits of coastal marine species is vital to inform their conservation and management, especially as their coastal habitats come under increasing threats. However, such data have never been collated for four of the five families in the suborder Syngnathoidei—the close relatives of the better‐studied ...
Syd J. Ascione, Elsa Camins, Miguel Correia, Amanda C. J. Vincent   +3 more
wiley   +1 more source

DUCTING AND TURBULENCE EFFECTS ON RADIO-WAVE PROPAGATION IN AN ATMOSPHERIC BOUNDARY LAYER [PDF]

, 2014
Yung-Hsiang Chou, Jean‐Fu Kiang
openalex   +1 more source

Winglet and long duct nacelle aerodynamic development for DC-10 derivatives [PDF]

Advanced technology for application to the Douglas DC-10 transport is discussed. Results of wind tunnel tests indicate that the winglet offers substantial cruise drag reduction with less wing root bending moment penalty than a wing-tip extension of the ...
Taylor, A. B.
core   +1 more source

The tympanic covering layer contributes to basilar membrane elasticity potentially influencing human frequency resolution and speech perception

Journal of Anatomy, EarlyView.
In this study we show for the first time that the human basilar membrane contains elastin produced by the so‐called tympanic covering layer. It is believed to play an important functional role in human cochlear tuning, particularly low frequencies linked to our remarkable speech and music perception.
Wei Liu, Claudia Steinacher, Alexander Glueckert, Rudolf Glueckert, Hao Li, Karin Staxäng, Anneliese Schrott‐Fischer, Hanif M. Ladak, Sumit Agrawal, Helge Rask‐Andersen   +9 more
wiley   +1 more source

Preliminary Study on the Classification, Association and Impaction of Oceanic Waveguides and Marine Atmospheric Duct

Haiyang Kaifa yu guanli
Ocean waveguides are important channel resources and mechanisms for geodesy, military oceanography, and also oceanic and climatic environmental changes. This paper focuses on the ocean waveguides environment, with marine atmospheric duct as the entry and
QI Qinghua
doaj  

A preliminary design and analysis of an advanced heat-rejection system for an extreme altitude advanced variable cycle diesel engine installed in a high-altitude advanced research platform [PDF]

Satellite surveillance in such areas as the Antarctic indicates that from time to time concentration of ozone grows and shrinks. An effort to obtain useful atmospheric data for determining the causes of ozone depletion would require a flight capable of ...
Johnston, Richard P.
core   +1 more source