Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Apollo Method

When cause-and-effect are charted, the Apollo Method requires that evidence of each cause is fully defined as it is stated. To support the second question you might document, Investigators found the heat transfer pipeline block valves to the fired heater closed. ... [Pg.295]

A laser probe study of Apollo 17 basalts [4] illustrates the use of the laser dating to interpret temperature release patterns. The laser 39Ar-40Ar method has been used to study three Apollo 17 basalts 70215, a basalt with a normal well-behaved 39Ar-40Ar release pattern 70017, a basalt with a disturbed 39Ar-40Ar release... [Pg.149]

Volatile metal chelates are also useful in determining isotope ratios of geological interest, e.g., the Zr/Hf ratio (197). This method proved invaluable as a microtechnique for chromium isotope analysis of lunar samples from the Apollo program (198). [Pg.255]

Tera, F. and Wasserburg, G.J., 1972. U-Th-Pb systematics in three Apollo 14 basalts and the problem of initial Pb in lunar rocks. Earth Planet. Sci. Lett., 14 281-304. Titterington, D.M. and Halliday, A.N., 1979. On the fitting of parallel isochrons and the method of maximum likelihood. Chem. Geol., 26 183-195. [Pg.265]

Introduction of Conjugation The best example of imparting higher thermal stability through the introduction of conjugation in explosive molecules is hexanitrostilbene (HNS), synthesized by Shipp [58, 59] of the US Naval Ordnance Laboratory (NOL) in 1964. Plants for full-scale production exist in the UK and China, based on the method of Shipp [60]. It has proved its efficiency as a heat-resistant explosive as well as a component of heat-resistant formulations employed in the Apollo spaceship and for seismic experiments on the moon [61]. HNS has also been reported for use in achieving stage separation in space rockets. [Pg.89]

Apollo s approach on cause-and-effect is very simple. Their method suggests that the problem be defined. As part of the problem definition a Primary Effect needs to be fully defined. Questions they suggest need to be answered When did it happen and Where did it happen ... [Pg.295]

Another Apollo question is, What is the significance of the problem Or stated differently Why am I working on the problem This method soft pedals the Who question since it relates to Ian Nimmo s concept of the Finger Pointing investigation, discussed above. [Pg.295]

The analysis of real samples, such as the soil and rock samples brought back to the earth from the moon by the Apollo astronauts, is usually quite complex compared with the analysis of materials studied in laboratory courses. As discussed in this chapter, the choice of analytical method for real materials is not simple, often requiring consultation of the literature, modification of existing methods, and extensive testing to determine method validity. [Pg.1024]

It should be noted that NASA used the same parallel development technique that was used to find a method to separate uranium isotopes. Rocket engines using liquid oxygen and hydrocarbon fuel had been tested and used in systems producing 25 thousand kilograms thrust. For Apollo Saturn 5 first... [Pg.175]

This convenient method has been used successfully to keep air breathable for humans living in extreme environments like deep-sea diving apparatuses, submarines, space suits, and spacecraft. One of the many serious problems that occurred during the Apollo 13 lunar mission involved LiOH canisters that didn t fit the air purification system. [Pg.49]

In 1988, a new semiautomated method, APOLLO, was developed by Koehler and Snyder, then at Searle in Chicago [12], Like the MNMM method, it relied upon the user to select the features for the pharmacophore. APOLLO s main significance was that it served as a progenitor of a new line of thought the pseudoreceptor modeling methods Yak and Prgen, developed by Snyder, Koehler, and Vedani. [Pg.440]

For some time, mixtures of H2 and natural gas have been used for chemical vapor deposition (CVD) growth of diamond-like carbon (DEC) films. It is now possible to use this technique to grow diamond seed crystals to produce clear, perfect colorless diamonds. Diamonds grown by the high-pressure methods are invariably doped and thus colored. One company, Apollo, has used the CVD technique to grow 1-ct diamonds. [Pg.664]


See other pages where Apollo Method is mentioned: [Pg.295]    [Pg.257]    [Pg.399]    [Pg.400]    [Pg.295]    [Pg.257]    [Pg.399]    [Pg.400]    [Pg.134]    [Pg.140]    [Pg.150]    [Pg.247]    [Pg.177]    [Pg.242]    [Pg.294]    [Pg.85]    [Pg.99]    [Pg.125]    [Pg.257]    [Pg.563]    [Pg.577]    [Pg.202]    [Pg.3233]    [Pg.175]    [Pg.80]    [Pg.377]    [Pg.138]    [Pg.248]    [Pg.138]    [Pg.731]    [Pg.591]    [Pg.688]    [Pg.680]    [Pg.38]    [Pg.732]    [Pg.28]   
See also in sourсe #XX -- [ Pg.297 ]

See also in sourсe #XX -- [ Pg.399 , Pg.400 ]




SEARCH



Apollo

© 2024 chempedia.info