December 1, 2016 NASA Tech Briefs - December 2016 - Vol. 40 No. 12 Here are links to this issue's Features, Tech Briefs, Products and more. You can download the complete issue, LOGIN TO DOWNLOAD Don't have an account? Sign up here. Subscribe to future issues. SUBSCRIBE Inside this issue Supplements Features Application Briefs System Recycles and Purifies Large Volumes of Helium for SLS Articles Products of Tomorrow: December 2016 NASA's Software Answers Big Questions About Space and Earth Top Prizes Awarded in the Create the Future Design Contest Temperature Sensors Cement the Integrity of Bridges Vote for Tech Briefs 22nd Annual Readers' Choice Awards Tech Briefs Materials Aerofoam Composite Pressure Vessel Including Crack Arresting Barrier Process for Preparing Aerogels from Polyamides Advanced Multilayer Environmental Barrier Coatings Information Sciences Lunar Thin Section Particle Identification and Analysis Algorithm Libibvpp Analytical Methodology to Predict the Radiometric Emissivity of a Parabolic Mesh Reflector Detection and Characterization of Recurring Slope Lineae Streams: A Hyper-Responsive Telemetry Interaction Tool on the Web Auto-Coding Flight Software Hybrid Controllers Synthesized from Formal Specifications Active Learning System for iPTF Candidate Classification Cobra: an Extendable Tool for Interactive Code Analysis Mechanics & Machinery Magnetic Relief Valve Work Piece Cleaning Apparatus and Method with Pulsating Mixture of Liquid and Gas Safety Drain System for Fluid Reservoir Locking Mechanism for a Flexible Composite Hinge Temperature-Compensating PMT Housing Electronics & Computers Carbon Nanofibers Synthesized on Selective Substrates for Nonvolatile Memory and 3D Electronics Applications A Nanotube Film Electrode and Electroactive Device Fabricated with the Nanotube Film Electrode and Methods for Making the Same Superconducting Transition Edge Sensors and Methods for Design and Manufacture Thereof Chalcogenide Nanoionic-Based Radio Frequency Switch X-ray Diffraction (XRD) Characterization Methods for Sigma=3 Twin Defects in Cubic Semiconductor (100) Wafers System for Configuring Modular Telemetry Transponders Aerospace Miles-In-Trail with Passback Restrictions for Use in Air Traffic Management Distributed Propulsion Concepts and Superparamagnetic Energy Harvesting Hummingbird Engine Improved Ground Collision Avoidance System (iGCAS) Aerodynamically Stabilized Instrument Platform Energy-Absorbing Beam Member Wet Active Chevron Nozzle for Controllable Jet Noise Reduction Improvements to the Functional Beamforming Formula Products Product of the Month: December 2016 Pressure Transducers Motion Control and Automation Technology LOGIN TO DOWNLOAD Subscribe to future issues. SUBSCRIBE Articles Choosing Stepper- or Servo-Driven Actuators to Replace Air Cylinders Applications Custom Machines Create Engine Lip Skins on Boeing Aircraft Products Modeling and Analysis Software Foundry Robot Robot Programming Software Digital Piezo Controller Linear Motor Automatic Multi-Pallet Changer Vertical Lift Module Automation System Reversible Hard Jaws Cable Retraction System Collaborative Robot Auto Crash Sensor Air Compressor Rotational Speed Sensors Collaborative Robot Manufacturing Connectivity Part Positioners Optical Encoders Test & Measurement Tech Briefs LOGIN TO DOWNLOAD Subscribe to future issues. SUBSCRIBE Applications Automating Roadbed Testing Before Paving A 40-Year Legacy and Excitement for the Future Articles High-Resolution Surface Measurement Optical Fiber Sensors for Infrastructure Monitoring ECG Small Signal General and Analysis Topics: View the discussion thread.