Physical Sciences

Briefs : Physical Sciences
Use of Selective Oxidation Catalyst for Amperometric Sensing Electrode

A modified oxidation catalyst material can be used to build a carbon-monoxide-sensing electrode for amperometric sensors to overcome the typical cross-sensitivity of these sensors toward hydrogen. The technology will have applications in the emerging hydrogen fuel cell...

Briefs : Physical Sciences
Simple Subset Wizard

The Simple Subset Wizard (SSW) was developed for the Earth Observing System Data and Information System (EOSDIS) to simplify the myriad ways of ordering or obtaining subsets of satellite data from EOSDIS’ different data centers. It provides a simple, coherent interface to a variety of subsetters at ten of the centers. The...

Briefs : Physical Sciences
COEDI Instrument Design Development for the GEOCAPE Mission

A document describes a coastal ocean color instrument for geostationary orbit that meets the science requirements within a size, mass, and cost package that is acceptable within current budgetary constraints. This work advances the instrument design concept for the Coastal Ocean...

Briefs : Physical Sciences
Intercalibration of Measurements from Microwave Sensors

A study discusses a robust intercalibration technique using a well validated radiative transfer code that can be applied to the higher-frequency sounding channels for the NASA Global Precipitation Measurement (GPM) mission. Intercalibration of these high-frequency sounding channels will...

News : Physical Sciences
Magnetically Stimulated Flow Patterns Could Solve Heat Transfer Problems

Sandia National Laboratories researchers Jim Martin and Kyle Solis have discovered a way to harness magnetic fields to create vigorous, organized fluid flows in particle suspensions. The magnetically stimulated flows offer an alternative when heat transfer is difficult...

Briefs : Physical Sciences
Laser Spider Web Sensor Used With Portable Handheld Devices

A powerful tool in understanding the role that greenhouse gasses play in climate change would be real-time data from laser chemical sensors providing concentrations and locations of key gasses. The adoption and widespread use of smart mobile phones is an ideal platform on which to...

Briefs : Sensors/Data Acquisition
Wireless Sensor Node for Autonomous Monitoring and Alerts in Remote Environments

The current radio infrastructure for firefighters provides voice communications, but does not support data transfer capability for continuous monitoring of people in the field. Current radios require user interaction to perform manual voice check-in for firefighter...

Briefs : Physical Sciences
Life-Detecting Radar

A new device detects the heartbeat and respiration of victims trapped in rubble or disaster debris, and reduces the time required to initiate a rescue. Searchers would like to distinguish live victims from those who have died recently and to distinguish humans from animals. In addition to search and rescue, there are other...

Briefs : Physical Sciences
High-Energy Lithium Flow Cells With Sulfur Cathodes for Transportation Applications

Since the entry of lithium-ion rechargeable batteries into the market, considerable improvements have been made in their gravimetric and volumetric energy densities, especially compared to aqueous systems such as Pb-acid, Ni-Cd, and Ni-MH. Sulfur cathodes have...

Briefs : Physical Sciences
Physical Causes of Extremely Low Geomagnetic Activity

An analysis of solar, solar wind, and geomagnetic data during the recent solar cycle minimum (2008) has recently been undertaken. It was discovered that the lowest value of the Ap index [this index is an averaged planetary A index based on data from a set of specific magnetometer stations] in...

Briefs : Physical Sciences
Green PCB Removal From Sediment Systems (GPRSS)

John F. Kennedy Space Center, Florida A number of NASA centers have used polychlorinated biphenyl (PCB)-containing materials that have subsequently ended up in surrounding sediment systems. Each center is evaluating remediation technologies that may have application to their environmental problems;...

Briefs : Physical Sciences
Internalization of Non-Spherical Particles

This invention specifically relates to an interchangeable sleeve that encompasses a rotating, substantially cylindrical bioreactor. The sleeve supplies a time-varying electromagnetic force of from 0.05 to 0.5 gauss to the culture chamber of the bioreactor in order to increase cell growth and...

Briefs : Physical Sciences
System for Observing Dynamic Atmospheric Phenomena

System has drastically increased transmitter capability at much reduced cost.

Existing observing systems are inadequate to measure a variety of dynamic atmospheric processes. Ground-based or airborne systems do not observe over sufficiently large regions to capture the context or time...

Briefs : Physical Sciences
Covariance Analysis of Astrometric Alignment Estimation Architectures for Precision Dual-Spacecraft Formation Flying

A paper highlights analysis of proposed navigation systems and architectures for achieving precise dual-spacecraft astrometric alignment. The dynamics of dual-spacecraft relative motion, within a restricted n-body problem...

Briefs : Physical Sciences
Automated Purgatoid Identification

An algorithm was developed that automatically processes images captured by the HiRISE camera on the Mars Reconnaissance Orbiter to identify and locate the presence of purgatoids in monochrome images.

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