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Now showing items 591-600 of 1298
Neurotoxic effects of perfluoroalkylated compounds: mechanisms of action and environmental relevance
(2012)
Perfluoroalkylated compounds (PFCs) are used in fire-fighting foams, treatment of clothes, carpets and leather products, and as lubricants, pesticides, in paints and medicine. Recent developments in chemical analysis have ...
Dose-response relationships for the onset of avoidance of sonar by free-ranging killer whales
(2014)
Eight experimentally controlled exposures to 1−2 kHz or 6−7 kHz sonar signals were conducted with four killer whale groups. The source level and proximity of the source were increased during each exposure in order to reveal ...
Maternal deprivation of Lewis rat pups increases the severity of experimental periodontitis in adulthood
(2015)
Background and Objective:
Early life adverse events may influence susceptibility/resistance to chronic inflammatory diseases later in life by permanently dysregulating brain-controlled immune-regulatory systems. We ...
The Influence of Predeployment Training on Coordination in Multinational Headquarters:The Moderating Role of Organizational Obstacles to Information Sharing.
(2016)
Coordination is critical to the success of multinational military operations and may be fostered by predeployment training. We argue that whether such training is related to a high degree of perceived coordination at the ...
Low-Complexity Adaptive Sonar Imaging
(2016)
We have studied the low-complexity adaptive (LCA) beamformer in active sonar imaging. LCA can be viewed as either a simplification of the minimum variance distortionless response (MVDR) beamformer, or as an adaptive extension ...
Signal environment mapping of the Automatic Identification System frequencies from space
(2016)
This paper presents received signal strength data recorded by the NORAIS Receiver on the four VHF channels allocated to the use of the Automatic Identification System (AIS). The NORAIS Receiver operated on-board the Columbus ...
Ultrawideband Gated Step Frequency Ground-Penetrating Radar
(2012)
We describe a prototype ultrawideband radar. We show how the system was designed and how the hardware was developed for the radar prototype. Waveform generation, radar parameters, and signal processing for the stepped ...
Oscillatory regimes of the thermomagnetic instability in superconducting films
(2016)
The stability of superconducting films with respect to oscillatory precursor modes for thermomagnetic avalanches is investigated theoretically. The results for the onset threshold show that previous treatments of nonoscillatory ...
Investment cost escalation – an overview of the literature and revised estimates
(2016)
This article presents an overview of literature and previous estimates of defence specific investment cost escalation (ICE). ICE, the cost increase between two generations of a weapon system, can place a heavy strain on ...
Isocyanate-Free and Dual Curing of Smokeless Composite Rocket Propellants
(2013)
Traditional composite rocket propellants are cured by treatment of hydroxyl-terminated prepolymers with polyfunctional aliphatic isocyanates. For development of smokeless composite propellants containing nitramines and/or ...