A robust model developed by LCWR combined with uniform design for the determination of hydrogen peroxide in water used in a microgravity environment

2020 ◽  
Vol 12 (4) ◽  
pp. 514-519
Author(s):  
Hai-Sheng Dong ◽  
Wei Zhao ◽  
Ping Cao ◽  
Shu-Juan Li ◽  
Tong-Fang Liu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Space Exploration ◽  
Uniform Design ◽  
Liquid Core ◽  
Design Strategy ◽  
Wave Guide ◽  
Microgravity Environment ◽  
Robust Model ◽  
Manned Space

Hydrogen peroxide is widely used in manned space exploration missions. A liquid core wave guide Raman apparatus was developed for the determination of hydrogen peroxide concentration in water coupled with uniform design strategy.

scholarly journals Design of an Autonomous and Timed Water Delivery System in Microgravity

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
William Elke ◽  
Maia Heineck ◽  
Jonah Meffert ◽  
Ellie Monaghan ◽  
Jason Palesse
Keyword(s):  
Space Exploration ◽  
Space Station ◽  
Microgravity Environment ◽  
Space Travel ◽  
Water Delivery ◽  
International Space ◽  
Schedule Flexibility ◽  
Long Duration ◽  
Manned Space ◽  
Fully Functioning

For long-duration, manned, space exploration missions to be feasible, farming techniques in space must become reliable and fruitful. The NASA Project Veggie team currently runs experiments on the International Space Station (ISS) in order to better understand how plants react to a microgravity environment. Current watering strategies on the ISS involve manual watering of all plants by the crewmembers. This poses a problem because watering plants must be scheduled into the crewmembers’ days which means less time to work, etc. The objective of Team International Space Salads (ISSa) was to create a device and prove that it could function in microgravity without electricity to autonomously water the plants in order to allow for schedule flexibility of the ISS crewmembers and to lay the foundation for watering systems for deep-space travel. The final device did not function fully as planned, however, the plant growing, surface tension experiments, and the device collectively progressed the multi-year project to a state where successive teams would have the knowledge and tools necessary to create a fully functioning device.

Enzymatic colorimetry of lecithin and sphingomyelin in aqueous solution.

1983 ◽  
Vol 29 (8) ◽  
pp. 1513-1517 ◽  
Author(s):  
M W McGowan ◽  
J D Artiss ◽  
B Zak
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Amniotic Fluid ◽  
Enzymatic Reaction ◽  
Detergent Solution ◽  
Enzymatic Determination ◽  
Red Color ◽  
Hydrolysis Of ◽  
Zwitterionic Detergent

Abstract A procedure for the enzymatic determination of lecithin and sphingomyelin in aqueous solution is described. The phospholipids are first dissolved in chloroform:methanol (2:1 by vol), the solvent is evaporated, and the residue is redissolved in an aqueous zwitterionic detergent solution. The enzymatic reaction sequences of both assays involve hydrolysis of the phospholipids to produce choline, which is then oxidized to betaine, thus generating hydrogen peroxide. The hydrogen peroxide is subsequently utilized in the enzymatic coupling of 4-aminoantipyrine and sodium 2-hydroxy-3,5-dichlorobenzenesulfonate, an intensely red color being formed. The presence of a non-reacting phospholipid enhances the hydrolysis of the reacting phospholipid. Thus we added lecithin to the sphingomyelin standards and sphingomyelin to the lecithin standards. This precise procedure may be applicable to determination of lecithin and sphingomyelin in amniotic fluid.

scholarly journals Determination of Hydrogen Peroxide with Peroxidase Adsorbed Carbon Electrode

1982 ◽  
Vol 102 (12) ◽  
pp. 1120-1123 ◽  
Author(s):  
HIROYUKI IWAI ◽  
SUMIYUKI AKIHAMA
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Electrode ◽  
Adsorbed Carbon
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