Results 61 to 70 of about 6,757,521 (349)

Flying Desert Rat: The Combat Career of Squadron Leader Bert Houle [PDF]

open access: yes, 2012
Albert Houle is a Canadian whose war, while not totally unique for a Canadian fighter pilot in World War Two, was certainly far from the norm. His entire combat career was fought in North Africa, Sicily and Italy.
Evans, Christopher
core   +1 more source

Coding Anisotropic Metasurface with Integrated Broadband Tunable Radiation and Low-Scattering Performance

open access: yesNanoscale Research Letters, 2019
In this paper, we propose a coding electromagnetic metasurface (EMMS) with integrated broadband tunable radiation and low-scattering performance. Anisotropic elements demonstrating opposite phases under x- and y-polarized incidence are investigated and ...
Li Li Cong   +4 more
doaj   +1 more source

Future Air Force space power needs [PDF]

open access: yes
The requirements for future power for AF satellite mission vehicles, fall into two categories. The first category is in the 1 to 50 kW range for missions of a continuous nature such as communication, navigation, surveillance, data relay and meteorology ...
Wise, J. F.
core   +1 more source

Figure-Ground Separation [PDF]

open access: yes, 1994
Air Force Office of Scientific Research (F49620-92-J-0499); Advanced Research Projects Agency (ONR N00014-92-J-4015); Office of Naval Research (N00014-91-J ...
Grossberg, Stephen
core   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

open access: yesAdvanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

Hypophysitis after COVID-19 vaccination in a patient with Rathke’s cleft cyst: A case report

open access: yesHuman Vaccines & Immunotherapeutics
With the widespread vaccination of COVID-19 vaccine, a few cases have been reported that COVID-19 vaccine may cause endocrine disorders. A 59-y-old man presented with a loss of appetite after the first COVID-19 vaccination, which resolved spontaneously ...
Yuanyuan Yu   +6 more
doaj   +1 more source

Antiwear Properties and Lubrication Mechanism of Bis(N,N-dipentylcarbamothioylthio)cadmium in Mineral Oils

open access: yesTribology Online, 2007
A bis(N,N-dipentylcarbamothioylthio)cadmium additive was synthesized. A four-ball tester was used to evaluate the tribological performance of the additive in mineral oil, and compared with same types of metal additives.
Jian-Qiang Hu   +4 more
doaj   +1 more source

Standard spacecraft economic analysis. Volume 1: Executive summary [PDF]

open access: yes
A study of the comparative program costs associated with use of various standardized spacecraft for Air Force space test program missions to be flown on the space shuttle during the 1980-1990 time period is reviewed.
Harris, E. D., Large, J. P.
core   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti   +5 more
wiley   +1 more source

Aeromedical evaluation and successful return to flight in a military pilot with lingual thyroid: a case report and follow-up

open access: yesBMC Endocrine Disorders
Background Lingual thyroid is a rare congenital anomaly resulting from the aberrant migration of thyroid tissue during embryonic development. Although frequently asymptomatic, its identification in military aircrew poses particular challenges given the ...
Pangmin Li   +6 more
doaj   +1 more source

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