Author: SRI International
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Measurement of Debris in the Flow from Pyrotechnic Reactions Using an Instrumented Hopkinson Pressure Bar
When an NASA standard initiator (NSI) combusts within the confinement of a pyrovalve, debris is generated and entrained into flow. This debris can originate from the closure disc, the zirconium potassium percholate (ZPP) reactants, and perhaps material ablated from the valve body such as aluminum.
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Shock Veins in L6 Chondrites and Constraints on the Impact History of the L6 Parent Body
In this study we use hydrodynamic calculations to explore possible impact conditions and sample locations on the L6 parent body for the highly shocked L6 chondrite RC106.
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Ventricular Expansion in Wild-Type Wistar Rats After Alcohol Exposure By Vapor Chamber
Here, we tested the hypothesis that wild-type Wistar rats, exposed to vaporized alcohol ensuring higher BALs than typically achieved with voluntary consumption in rodents, would model MRI findings in the brains of humans with chronic alcoholism.
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Imaging Radar Observations of Farley Buneman Waves During the Joule Ii Experiment
Vector electric fields and associated E×B drifts measured by a sounding rocket in the auroral zone during the NASA JOULE II experiment in January 2007, are compared with coherent scatter spectra measured by a 30 MHz radar imager in a common volume.
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Telephone-Based Tobacco-Cessation Treatment Re-Enrollment Among Diverse Groups
This study aimed to determine the rates of quitline re-enrollment and to compare the responses of people of varying racial/ethnic identities to invitations utilizing different communication strategies.
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Dynamic Facial Expression Analysis and Synthesis with Mpeg-4 Facial Animation Parameters
This paper describes a probabilistic framework for faithful reproduction of dynamic facial expressions on a synthetic face model with MPEG-4 facial animation parameters while achieving very low bitrate in data transmission.
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Sleep Deprivation Effects on Circadian Clock Gene Expression in the Cerebral Cortex Parallel Electroencephalographic Differences Among Mouse Strains
Sleep deprivation (SD) results in increased electroencephalographic (EEG) delta power during subsequent non-rapid eye movement sleep (NREMS) and is associated with changes in the expression of circadian clock-related genes in the cerebral cortex.
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Photoemission Phenomena in the Solar System
We present current information in various categories—measurements of the airglows of the terrestrial planets, the dayglows of the outer planets and satellites, aurora throughout the solar system, observations of cometary spectra, and the emission of X-rays from a variety of planetary bodies.
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Annotation-Based Inference of Transporter Function
We present a method for inferring and constructing transport reactions for transporter proteins based primarily on the analysis of the names of individual proteins in the genome annotation of an organism.
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Cortical Processing of Respiratory Occlusion Stimuli in Children with Central Hypoventilation Syndrome
Cortical integration of afferent mechanical stimuli caused by respiratory loading or upper airway occlusion can be tested by measuring respiratory-related evoked potentials (RREPs). We hypothesized that patients with CHS would have blunted RREP during both wakefulness and sleep.
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The Coating Hypothesis for Ammonia Ice Particles in Jupiter: Laboratory Experiments and Optical Modeling
We report laboratory experiments and modeling calculations investigating the effect of a hydrocarbon coating on ammonia ice spectral signatures.
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High throughput membrane-less water purification
This paper describes a highly scalable fluidic technology that presents a transformative approach to the practice of conventional water treatment.