Noble, Clark

Clark et al.n recently discovered another FS related inechanisni in CuPt, different from the above mentioned nesting. In this case, the relevant contribution to the coneentration waves suseeptibility is due to the contemporary presenee of the noble metal-like neck at the L point and the d hole pocket at X. Ifie connecting vector of these Van Hove singularities belongs to the star 1,1,1 and is commensurate with the Lli ordering. In fact, it produces a phase characterised by alt ate hexagonal Cu and Pt planes, in the direction perpendicular to (1,1,1). 

Stute, M., Schlosser, P., Clark, J. F., and Broecker, W. S. (1992). Paleotemperatures in the southwestern United States derived from noble gases in ground-water. Science 256,1000-1003. 

Except for a veiled but important reference in Banting s 1922 account, there are no other useful written records of this incident. Clark Noble once drew a cartoon, unfortunately now lost, of Banting sitting on Collip, choking him he captioned it The Discovery of Insulin . 

The discovery of vinblastine and vincristine is one of the most intriguing examples of serendipity in scientihc research in recent years. In 1952, the Canadian medical researcher Robert Laing Noble (1910-90) received a package from his brother. Dr. Clark Noble, containing 25 leaves from the Madagascar periwinkle plant. Vinca rosea. Clark had received the leaves from one of his patients in Jamaica, who said that natives on the island often used the plant to control their diabetes when insulin was not available. Clark, who was retired, suggested that his brother study the plant for possible use as a drug for the treatment of diabetes. 

Cf. the noble intentions of many early modern reformers Clark, Thinkingwith Demons, 222 Webster, Paracelsus to Newton, 59. 

Aside from identifying air injection as a common feature in most waters and excess He in Pacific deep waters, noble gas elemental abundances have also been used as tracers for water masses and to study mixing in intermediate waters. Discussions are given by Bieri et al. (1966, 1968), Craig, Weiss and Clarke (1967), Craig and Weiss (1968), and Bieri and Koide (1972). On the whole, the arguments cut finer and are therefore closer to the limit of experimental uncertainties than the air injection and excess He features discussed earlier, and so are less definitive in any case, they seem not to have made any large impact on marine science. 

A cadaver is a complex resource that comes with a heavy microbial inoculum in the form of enteric and dermal microbial communities (Clark, Worrell, and Pless 1997 Hill 1995 Noble 1982 Wilson 2005 Yajima et al. 2001). A cadaver also comprises a large amount of water (60%-80%), a relatively high concentration of lipid and protein (Swift, Heal, and Anderson 1979 Tortora and Grabowski 2000) and a narrow C N ratio (Table 2.1). These properties are characteristic of a high-quality resource thus, the breakdown of a cadaver is usually rapid. This breakdown can broadly be described by three processes autolysis, putrefaction, and decay. 

Stute M., Clark J. F., Schlosser P., Broecker W. S., and Bonani G. (1995) A 30,000 yr continental paleotemperature record derived from noble gases dissolved in groundwater from the San Juan Basin, New Mexico. Quat. Res. 43, 209—220. 

Helium isotope measurements in ocean ridge and island basalts provide some of the most basic geochemical information on mantle source reservoirs. More helium isotope analyses have been performed for oceanic volcanic rocks than for other noble gas species, and helium isotopes have played a leading role in the study of mantle heterogeneity. Helium isotope analyses are readily performed by modern mass spectrometers because there is a general absence of atmospheric contamination in samples due to the low concentration of helium in air (5.24 parts per million by volume at standard temperature and pressure). There are 2 naturally occurring isotopes of helium. He is much less abundant than " He for example, the atmospheric He/" He ratio (Ra) is 1.39x10 (Mamyrin et al. 1970 Clarke et al. 1976). Nearly all of the terrestrial " He has been produced as a-particles from the radioactive decay of U, U and Th over... 

The determination of noble gases in water can be divided into three successive analytical steps (1) noble gas extraction from the water, (2) purification and separation of the extracted noble gases, and (3) quantitative (mass spectrometric) analysis. For extended discussions of methods for noble gas analysis in waters (and other terrestrial fluids) the readers are referred to Clarke et al. (1976), Rudolph (1981), Bayer et al. (1989), Stute (1989), Groning (1994), Ludin et al. (1997), and Beyerle et al. (2000a). 

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