Results 61 to 70 of about 883,904 (117)

Research and Technology [PDF]

open access: yes
Langley Research Center is engaged in the basic an applied research necessary for the advancement of aeronautics and space flight, generating advanced concepts for the accomplishment of related national goals, and provding research advice, technological ...

core   +1 more source

Acute toxicity of mercury to freshwater cultured milkfish Chanos chanos: Clinical symptoms and lethal concentration assessment [PDF]

open access: yes
The increasing use of mercury in the industrial sector poses significant risks to freshwater ecosystems and aquatic organisms. Milkfish (Chanos chanos), a widely consumed species, is now being reared in freshwater environments, raising concerns about ...
Affandi, Ridwan   +3 more
core   +1 more source

70 Years of Aeropropulsion Research at NASA Glenn Research Center [PDF]

open access: yes
This paper presents a brief overview of air-breathing propulsion research conducted at the NASA Glenn Research Center (GRC) over the past 70 years.
Reddy, Dhanireddy R.
core   +1 more source

Progress in aircraft design since 1903 [PDF]

open access: yes
Significant developments in aviation history are documented to show the advancements in aircraft design which have taken place since 1903. Each aircraft is identified according to the manufacturer, powerplant, dimensions, normal weight, and typical ...

core   +1 more source

Entry, Descent, and Landing With Propulsive Deceleration [PDF]

open access: yes
The future exploration of the Solar System will require innovations in transportation and the use of entry, descent, and landing (EDL) systems at many planetary landing sites.
Palaszewski, Bryan
core   +1 more source

Aerospace medicine and biology. A continuing bibliography with indexes, supplement 224 [PDF]

open access: yes
This bibliography lists 127 reports, articles, and other documents introduced into the NASA scientific and technical information system in September ...

core   +1 more source

Small business innovation research. Abstracts of 1988 phase 1 awards [PDF]

open access: yes
Non-proprietary proposal abstracts of Phase 1 Small Business Innovation Research (SBIR) projects supported by NASA are presented. Projects in the fields of aeronautical propulsion, aerodynamics, acoustics, aircraft systems, materials and structures ...

core   +1 more source

Shark Alert: Early Warning System [PDF]

open access: yes, 2015
The Shark Alert Early Warning System is a device geared toward avid beach goers such as surfers, divers, and swimmers. The system is composed of an ultrasonic transmitter mounted on a shark’s dorsal fin and a receiver worn by the user around the ankle ...
McClain, Taylor   +2 more
core   +1 more source

Prey Density Threshold and Tidal Influence on Reef Manta Ray Foraging at an Aggregation Site on the Great Barrier Reef. [PDF]

open access: yesPLoS One, 2016
Armstrong AO   +9 more
europepmc   +1 more source

Aeronautical Engineering: A special bibliography with indexes, supplement 64, December 1975 [PDF]

open access: yes
This bibliography lists 288 reports, articles, and other documents introduced into the NASA scientific and technical information system in November ...

core   +1 more source

Home - About - Disclaimer - Privacy