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Micro UV Aerosol Detector

  • Magazine Article
  • TBMG-34637
Published 2019-06-01 by Tech Briefs Media Group in United States

The detection of aerosols within fluid samples can be accomplished by optical methods. Such methods are useful in detecting potentially harmful aerosols such as biological aerosols that may be present after a biological agent attack or industrial accident. It is well known that biological molecules fluoresce when excited by ultraviolet (UV) radiation. As a result, biological molecules in an aerosol sample can be optically detected by irradiating the sample with ultraviolet radiation and observing the fluorescence response. Since differing excitation wavelengths may be used to detect different classes of biological molecules, the excitation wavelength can be chosen to detect specific classes of biological molecules such as proteins, flavinoids, and metabolite products.

Biological Threat Detectors

  • Magazine Article
  • TBMG-33372
Published 2018-12-01 by Tech Briefs Media Group in United States

FLIR Systems, Inc. Wilsonville, OR 1-800-254-0630

Branimir Blagojevic, Technologist, Goddard Space Flight Center, Greenbelt, MD

  • Magazine Article
  • TBMG-26269
Published 2017-01-23 by Tech Briefs Media Group in United States

During his time with former employer Science and Engineering Services, LLC, Branimir Blagojevic helped build a remote-sensing device that detected biological agents. The technology, originally made for the Department of Defense (DoD), may soon find a place on Mars. Blagojevic currently leads the development of the Bio-Indicator Lidar Instrument (BILI), a device that could be used to spot organic molecules and signs of life on Mars.


  • Magazine Article
  • TBMG-14388
Published 2010-03-01 by Tech Briefs Media Group in United States

QuasarBrite™ UV LEDs from Lumex, Palatine, IL, are available in 385nm, 405nm, and 415nm wavelengths at 4-6mW in through-hole format. A robust TO-46 package with a glass lens provides a lifespan of more than 50,000 hours. QuasarBrite UV LEDs provide a uniform beam pattern and do not use the hazardous mercury material found in CCFL technology. Lumex’s UV LEDs have up to 70% lower energy consumption than CCFLs. The UV LEDs are ideal for a wide range of applications, such as bacterial and superficial sterilization for medical device technologies; industrial control device technology related to leak and biohazard detection; forensic applications related to counterfeit detection; and ink fluorescing.

Fabricating PFPE Membranes for Microfluidic Valves and Pumps

  • Magazine Article
  • TBMG-5174
Published 2009-05-01 by Tech Briefs Media Group in United States

A process has been developed for fabricating membranes of a perfluoropolyether (PFPE) and integrating them into valves and pumps in “laboratory-on-a-chip” microfluidic devices. Membranes of poly(tetrafluoroethylene) [PTFE] and poly(dimethylsilane) [PDMS] have been considered for this purpose and found wanting. By making it possible to use PFPE instead of PTFE or PDMS, the present process expands the array of options for further development of microfluidic devices for diverse applications that could include detection of biochemicals of interest, detection of toxins and biowarfare agents, synthesis and analysis of proteins, medical diagnosis, and synthesis of fuels.

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Odors in Space Environments - Sources and Control Strategies

Enterprise Advisory Services Inc.-Kanapathipillai Wignarajah
NASA-Ames Research Center-John Hogan, John Fisher
Published 2007-07-09 by SAE International in United States
Management of human feces and wastes is a major challenge in space vehicles due to the potential biohazards and malodorous compounds emanating during collection and storage of feces and wastes. To facilitate safe, yet realistic human waste management research, we have previously developed human fecal simulants for research activities.The odoriferous compounds in feces and wastes reduce the quality of life for astronauts, can reduce performance, and can even cause health problems. The major odoriferous compounds of concern belong to four groups of chemicals, volatile fatty acids, volatile sulfurous compounds, nitrogenous compounds and phenols.This paper attempts to review the problem of odor detection and odor control with advanced technology. There has been considerable progress in odor detection and control in the animal industry and in the dental profession. The progress especially in the dental field may be a basis for developing requirements for odor control, measurement of the key odoriferous compounds, development of sensors for monitoring odoriferous compounds and investigating new odor control technology for future space habitats. Some of these monitoring devices, such as the…
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Improving Water-Tightness of Passenger Vehicles

Ford Motor Co.-B. S. AbdulNour
University of Leicester-A. Aroussi
  • Technical Paper
  • 2007-04-0044
Published 2007-05-20 by Institution of Mechanical Engineers in United Kingdom
Previous research has shown that water ingress into vehicles can be detrimental to driver comfort in terms of high humidity, dampness and odor and also in terms of safety, due to high misting of the windows reducing overall visibility. In extreme cases, water ingress can lead to rusting from the inside and potential biohazards as the car furnishings provide the ideal warm and damp environment for bacteria and spores to flourish. A significant route for water ingress into passenger cars is through the Heating, Ventilation, and Air-Conditioning (HVAC) system. The penetration of rainwater through the HVAC unit and the subsequent rise in moisture levels within the passenger compartment directly affect the provision of thermal comfort to the cabin occupants. Using a full-scale Climatic Wind Tunnel (CWT) facility, which incorporates accurate rain distribution modelling, it has been possible to study the movement of rainwater film over the exterior surface of the vehicle to ascertain the flow distribution of the film moving into the engine bay, into the cowl, advancing up and over the windscreen and shed…

Noise-Canceling Helmet Audio System

  • Magazine Article
  • TBMG-1912
Published 2007-05-01 by Tech Briefs Media Group in United States

A prototype helmet audio system has been developed to improve voice communication for the wearer in a noisy environment. The system was originally intended to be used in a space suit, wherein noise generated by airflow of the spacesuit life-support system can make it difficult for remote listeners to understand the astronaut’s speech and can interfere with the astronaut’s attempt to issue vocal commands to a voice-controlled robot. The system could be adapted to terrestrial use in helmets of protective suits that are typically worn in noisy settings: examples include biohazard, fire, rescue, and diving suits.

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Advanced Miniature IR Spectral Processor for the Infrared Spectral Monitoring of Spacecraft Vital Life-Support Systems and Remote Astronaut Health Diagnostics

INRS Énergie et Matériaux-Mohamed Soltani, Mohamed Chaker
MPB Communications Inc-Roman V. Kruzelecky, Brian Wong, Jing Zou, Wes Jamroz
Published 2006-07-17 by SAE International in United States
Infrared (IR) spectroscopy probes the characteristic vibrational and rotational modes of chemical bonds in molecules to provide direct information about both the chemical composition and the bonding configuration of a sample. The significant advantage of the IR spectral technique is that it can be used with minimal consumables to simultaneously detect a large variety of different chemical and biochemical species with high chemical specificity. Currently, various VIS/NIR grating spectrometers are employed to cover the spectral range between 0.3 and about 2.2 (μm. Bulk-optic Fourier Transform (FT)-IR spectrometers employing variations of the Michelson interferometer are generally used to provide spectral measurements above 2.5 (μm. The FT-IR systems tend to be mechanically complex, bulky (>15 kg), and require considerable processing, maintenance and recalibration.For space-based systems, the important drivers are reliability, power consumption, mass and simplicity of operation. MPBT has advanced its patent-pending IOSPEC™ technology for miniature integrated IR spectrometers to provide high performance comparable to large laboratory spectrometers but in a very compact and ruggedized footprint weighing under 2.0 kg. It also bridges the gap between current…
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Programmable Pulse-Position- Modulation Encoder

  • Magazine Article
  • TBMG-1506
Published 2006-04-01 by Tech Briefs Media Group in United States

A sensor system was proposed that would monitor spaceflight bioreactor parameters. Not only will this technology be invaluable in the space program for which it was developed, it will find applications in medical science and industrial laboratories as well.