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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 127 records · Page 7

Coordination chemistry in fused-salt solutions

Spectrophotometric work on structural determinations with fused-salt solutions is reviewed. Constraints placed on the method, as well as interpretation of the spectra, are discussed with parallels drawn to aqueous spectrophotometric curves of the same materials.

Gruen, D. M.↗

Organosilicon compounds. V.

Synthesis of N-/trimethylsilylalkyl/ diamines and N-/trimethylsilylalkyl/-N-/2-mercaptoethyl/ diamines, determining structure by IR spectra

Edwards, L. H.↗

Welding columbium-stainless bimetal tubing

Welding techniques for Nb-stainless steel bimetal tubing for liquid metal containment, determining structural integrity and bond interface condition after thermal cycling

Stoner, D. R.↗

Planetary Atmosphere Experiments Test /PAET/

Flight test of Planetary Atmosphere Experiments Test /PAET/ spacecraft to investigate means of determining structure and composition of unknown planetary atmospheres

Source record↗

An application of artificial intelligence to the interpretation of mass spectra.

Description of the DENDRAL (Dendritic Algorithm) project, the objectives of which were to base the computer program on an alogorithm that generates an exhaustive, nonredundant list of all the structural isomers of a given chemical composition, and to devise a computer program that would perform an organic structure determination, given a molecular formula and a mass spectrum. This program is called 'Heuristic DENDRAL' and it operates by using the known structure/spectrum correlations to constrain the DENDRAL isomer generator to produce a single isomer for that composition. The collaboration of chemists and computer scientists has produced a tool of some practical utility from the chemical viewpoint, and an interesting program from the viewpoint of artificial intelligence.

Buchanan, B. G.↗