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Smartphone System Tests for Lead in Water

  • Magazine Article
  • TBMG-35990
Published 2020-02-01 by Tech Briefs Media Group in United States

Even small amounts of lead can cause serious health problems. U.S. Environmental Protection Agency (EPA) standards require lead levels in drinking water to be below 15 parts per billion. Currently available consumer test kits are not sensitive enough to accurately detect lead at that level. A new system has been developed using a smartphone and a lens made with an inkjet printer that can detect lead in tap water at levels commonly accepted as dangerous.

Process Turns Sand and Plant Materials into a Water Filtration Tool

  • Magazine Article
  • TBMG-35819
Published 2020-01-01 by Tech Briefs Media Group in United States

According to the United Nations, 2.1 billion people lack access to safely managed drinking water services and the majority live in developing nations. A process was developed that uses sand and plant materials readily available in many developing nations to create a cheap and effective water filtration medium called “f-sand.” F-sand uses proteins from the Moringa oleifera plant, a tree native to India that grows well in tropical and subtropical climates. The tree is cultivated for food and natural oils, and the seeds are already used for a type of rudimentary water purification; however, this traditional means of purification leaves behind high amounts of dissolved organic carbon (DOC) from the seeds, allowing bacteria to regrow after just 24 hours. This leaves only a short window in which the water is drinkable.

Device Simplifies Measurement of Fluoride Contamination in Water

  • Magazine Article
  • TBMG-35149
Published 2019-09-01 by Tech Briefs Media Group in United States

Adding fluoride to water has been common practice in a number of countries including the U.S. In low concentrations (below 1.5 mg/L), fluoride can help prevent tooth decay and strengthen bones; however, at higher levels, it can have the opposite effect, causing serious dental and bone disease, especially in children and developing fetuses. To determine whether drinking water is safe, fluoride must be detected in water at a parts-per-million (ppm) level. Measuring fluoride at such low concentrations with sufficient accuracy is expensive and requires a well-equipped chemical lab.

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Air Cycle Air Conditioning Systems for Air Vehicles

AC-9 Aircraft Environmental Systems Committee
  • Aerospace Standard
  • AS4073B
  • Current
Published 2019-08-20 by SAE International in United States
This SAE Aerospace Standard (AS) defines the requirements for air cycle air conditioning systems used on military air vehicles for cooling, heating, ventilation, and moisture and contamination control. General recommendations for an air conditioning system, which may include an air cycle system as a cooling source, are included in MIL-E-18927E and JSSG-2009. Air cycle air conditioning systems include those components which condition high temperature and high pressure air for delivery to occupied and equipment compartments and to electrical and electronic equipment. This document is applicable to open and closed loop air cycle systems. Definitions are contained in Section 5 of this document.
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Feasibility Study of Portable Water Desalination Systems for Water Contingencies at Remote Navy Installations

Aerospace & Defense Technology: August 2019

  • Magazine Article
  • 19AERP08_07
Published 2019-08-01 by SAE International in United States

Navy explores ways to ensure an uninterrupted supply of potable water at remote installations.

The Department of the Navy (DON) has major installations located around the world. Twenty-two main installations operate outside the continental United States (OCONUS) and rely on on-base water processing facilities. These facilities serve a total population of 71,000 military and civilian personnel, and the water plants have a total production capacity of 15.7 million gallons per day.

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Smartphone Test Spots Poisoned Water Risk

  • Magazine Article
  • TBMG-34731
Published 2019-07-01 by Tech Briefs Media Group in United States

Researchers have developed a biosensor that attaches to a smartphone and uses bacteria to detect unsafe arsenic levels. The device generates easy-to-interpret patterns similar to volume-bars that display the level of contamination.

Researchers Create Smartphone System to Test for Lead in Water

  • Magazine Article
  • TBMG-34421
Published 2019-05-01 by Tech Briefs Media Group in United States

Researchers at the University of Houston have created an inexpensive system that can detect lead in tap water at levels commonly accepted as dangerous, using a lens made with an inkjet printer and a smartphone.

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Automotive Waste Heat Recovery after Engine Shutoff in Parking Lots

SAE International Journal of Advances and Current Practices in Mobility

Clemson University-Zaker Syed, John R. Wagner
  • Journal Article
  • 2019-01-0157
Published 2019-04-02 by SAE International in United States
1The efficiency of internal combustion engines remains a research challenge given the mechanical friction and thermodynamic losses. Although incremental engine design changes continue to emerge, the harvesting of waste heat represents an immediate opportunity to address improved energy utilization. An external mobile thermal recovery system for gasoline and diesel engines is proposed for use in parking lots based on phase change material cartridges. Heat is extracted via a retrofitted conduction plate beneath the engine block after engine shutoff. An autonomous robot attaches the cartridge to the plate and transfers the heat from the block to the Phase Change Material (PCM) and returns later to retrieve the packet. These reusable cartridges are then driven to a Heat Extraction and Recycling Tower (HEART) facility where a heat exchanger harvests the thermal energy stored in the cartridges. A series of mathematical models are created to estimate the recoverable heat from a standard parking lot configuration. A representative case study that considered 500 cars with periodic traffic flow over a period of 16 hours can heat approximately 25 kiloliters…
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Pre-Treatment Solution for Water Recovery

  • Magazine Article
  • TBMG-34169
Published 2019-04-01 by Tech Briefs Media Group in United States

The Pre-Treatment Solution for Water Recovery technology was developed by NASA Johnson Space Center innovators to increase the amount of potable water recovered from the International Space Station’s urine processor assembly system. The solution increased the water recovery rate in the ISS distiller from 75 to 90 percent, doubled the volume of feed processed per cycle, reduced the volume of brine by half, and eliminated the formation of precipitate up to 90% water recovery.

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Survival Kit - Life Rafts and Slide/Rafts

S-9A Safety Equipment and Survival Systems Committee
  • Aerospace Standard
  • ARP1282B
  • Current
Published 2019-03-05 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) applies to survival kits to be carried with life rafts or slide/rafts on transport category airplanes flying extended over-water routes and equipped with approved satellite alerting devices (e.g., 406 MHz Emergency Locator Transmitter (ELT)), available for deployment after an emergency landing.
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