Cadmium selenium Quantum Dots (QDs) are metal nanoparticles that fluoresce in a variety of colors determined by their size. QDs are solid state structures made of semiconductors or metals that confine a countable, small number of electrons into a small space. The confinement of electrons is achieved by the placement of some insulating material(s) around a central, well conducted region. Coupling QDs with antibodies can be used to make spectrally multiplexed immunoassays that test for a number of microbial contaminants using a single test.
n/a
Date: 02-11-15 Loction: Bldg 9NW Subject: Expedition 50 crew members Shane Kimbrough and Thomas Pesquet during ISS EVA Fluid QD Ops 1 with instructors Allissa Battocletti(purple) and Staphanie Johnston. Photographer: James Blair
jsc2015e034699
View of Rick Mastracchio,in his Extravehicular Mobility Unit (EMU),working to mate spare Pump Module (PM) Quick Disconnects (QDs) during International Space Station (ISS) Extravehicular Activity (EVA) 25. Image was released by astronaut on Twitter.
EVA 25
PHOTO DATE: 06-23-11 LOCATION: Bld 9NW SUBJECT: Expedition 29 crew members, Dan Burbank, Don Pettit and Andre Kuiper during EVA Fluid QD Ops with instructor Sandra Moore WORK ORDER: 2011-1643 PHOTOGRAPHER: James Blair
Expedition 30/31 crew member Don Pettit during training
PHOTO DATE: 06-23-11 LOCATION: Bld 9NW SUBJECT: Expedition 29 crew members, Dan Burbank, Don Pettit and Andre Kuiper during EVA Fluid QD Ops with instructor Sandra Moore WORK ORDER: 2011-1643 PHOTOGRAPHER: James Blair
Expedition 29/30/31 crew members Burbank, Pettit and Kuipers during training
ISS019-E-015910(12 May 2009) --- Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 19/20 flight engineer, works on the Combustion Integrated Rack (CIR) Multi-user Drop Combustion Apparatus (MDCA) in the Destiny laboratory of the International Space Station. Wakata removed and replaced one fuel reservoir, which required temporary opening the front end cap and removing the fuel supply bypass Quick Disconnect (QD).
MDCA (Multi-user Drop Combustion Apparatus) operations
ISS019-E-015912 (12 May 2009) --- Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 19/20 flight engineer, works on the Combustion Integrated Rack (CIR) Multi-user Drop Combustion Apparatus (MDCA) in the Destiny laboratory of the International Space Station. Wakata removed and replaced one fuel reservoir, which required temporary opening the front end cap and removing the fuel supply bypass Quick Disconnect (QD).
MDCA (Multi-user Drop Combustion Apparatus) operations
ISS019-E-015906 (12 May 2009) --- Japan Aerospace Exploration Agency (JAXA) astronaut Koichi Wakata, Expedition 19/20 flight engineer, works on the Combustion Integrated Rack (CIR) Multi-user Drop Combustion Apparatus (MDCA) in the Destiny laboratory of the International Space Station. Wakata removed and replaced one fuel reservoir, which required temporary opening the front end cap and removing the fuel supply bypass Quick Disconnect (QD).
MDCA (Multi-user Drop Combustion Apparatus) operations