April 1, 2009 NASA Tech Briefs - April 2009 - Vol. 32 No. 4 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 Eye on Innovation Product Simplification: Rediscover a Whole New Game Application Briefs Communications Systems Support NASA’s Unmanned Aircraft Handheld Labeler is Key to International Space Station’s Organizational System Who's Who Dr. Alexander Kashlinsky, Senior Staff Scientist, SSAI, Goddard Space Flight Center, Greenbelt, MD Articles 2008 Create the Future Design Contest Grand Winner Consumer Products Category Winner Machinery & Equipment Category Winner Medical Category Winner Safety & Security Category Winner Sustainable Technologies Category Winner Transportation Category Winner Tech Briefs Bio-Medical Using Fluorescent Viruses for Detecting Bacteria in Water Anaerobic Digestion in a Flooded Densified Leachbed Physical Sciences Wireless Fluid-Level Sensors for Harsh Environments Direct-Solve Image-Based Wavefront Sensing Use of UV Sources for Detection and Identification of Explosives Gradiometer Using Middle Loops as Sensing Elements in a Low-Field SQUID MRI System Volcano Monitor: Autonomous Triggering of 'In-Situ' Sensors Determining Aliasing in Isolated Signal Conditioning Modules Apparatus for Screening Multiple Oxygen-Reduction Catalysts Spectrum Analyzers Incorporating Tunable WGM Resonators Composite Bipolar Plate for Unitized Fuel Cell/Electrolyzer Systems Quantum-Well Thermophotovoltaic Cells Manufacturing & Prototyping Modal Vibration Analysis of Large Castings Structural/Radiation-Shielding Epoxies Materials Integrated Multilayer Insulation Information Sciences Bounded-Angle Iterative Decoding of LDPC Codes Conversion From Tree to Graph Representation of Requirements Mechanics & Machinery Parallel Hybrid Vehicle Optimal Storage System Electronics & Computers Wireless Devices for Temperature Monitoring Interference-Detection Module in a Digital Radar Receiver Products P356 Low-Pressure Gage Product of the Month: Laser Beam Analysis System Photonics Tech Briefs LOGIN TO DOWNLOAD Subscribe to future issues. SUBSCRIBE Applications Shortwave Infrared - The Latest Weapon in the War on Terror Articles Taming Residual Bulk Image in CCDs Products Photonics Tech Briefs Announces 2008 Products of the Year Gel Imaging System Near-IR Cameras LED Lighting Modules Piezo Stages Transmission Flat For Interferometers Phototransistor Optocouplers Thin-Film Thermoelectric Cooler Miniature Halogen Lamps 642nm 150mW Laser Diode LED Drivers Dual Vision Thermal Imaging Camera Pump Diode Laser Borescopes Ruggedized Lasers LED Driver Portable Raman Spectroscopy Device Laser Apparatus Handheld Spectrometer Damage-Resistant Mirrors Dispersion Control Modules Motion Control Technology LOGIN TO DOWNLOAD Subscribe to future issues. SUBSCRIBE Products Optical Encoder Pillow Blocks Incremental Encoder Piezo Linear Actuator DC Gearmotors Speed Regulator Electric Actuator Linear Drive Applications BEI Duncan’s Steer-by-Wire Technology Improves Fuel Efficiency for AGCO Challenger® Tractor Delta Motion Controller Helps ADI Improve Automotive Chassis Testing Heidenhain Encoders Help TRW Machine Ford SUV Parts Articles Slip Clutches Solve Diverse Design Problems View the discussion thread.