5 resultater (0,21397 sekunder)

Vis alle filtre

Mærke

Butik

Pris (EUR)

Nulstil filter

Produkter
Fra
Butikker

Small Portable Pem Fuel Cell Systems for NASA Exploration Missions - Kenneth a Burke

Small Portable Pem Fuel Cell Systems for NASA Exploration Missions - Kenneth a Burke

Oxygen-Hydrogen PEM-based fuel cell systems are being examined as a portable power source alternative in addition to advanced battery technology. Fuel cell power systems have been used by the Gemini, Apollo, and Space Shuttle programs. These systems have not been portable, but have been integral parts of their spacecraft, and have used reactants from a separate cryogenic supply. These systems typically have been higher in power. They also have had significant ancillary equipment sections that perform..

DKK 159.95
1

Field Experience with Four Portable Voc Monitors

Field Experience with Four Portable Voc Monitors

The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics..

DKK 147.95
1

Some Curves from a Portable Differential Thermal Analysis Unit - Usgs Bulletin 1021-G - Carol J Parker

Some Curves from a Portable Differential Thermal Analysis Unit - Usgs Bulletin 1021-G - Carol J Parker

The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the natural dangers we are facing. The agency has over 10,000 employees that collect, monitor, and analyze data so that they have a better understanding of our problems. The USGS is dedicated to provide reliable, investigated information to enhance and protect our quality of life. This is one of their bulletins...

DKK 149.95
1

Analysis and Design of Phase Change Thermal Control for Light Emitting Diode (Led) Spacesuit Helmet Lights

Analysis and Design of Phase Change Thermal Control for Light Emitting Diode (Led) Spacesuit Helmet Lights

LED Helmet Extravehicular Activity Helmet Interchangeable Portable (LEHIP) lights for the Extravehicular Mobility Unit (EMU) have been built and tested and are currently being used on the International Space Station. A design is presented of the passive thermal control system consisting of a chamber filled with aluminum foam and wax. A thermal math model of LEHIP was built and correlated by test to show that the thermal design maintains electronic components within hot and cold limits for a 7 hour..

DKK 158.95
1