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Radical change sources

The behavior of liquid flow in micro-tubes and channels depends not only on the absolute value of the viscosity but also on its dependence on temperature. The nonlinear character of this dependence is a source of an important phenomenon - hydrodynamic thermal explosion, which is a sharp change of flow parameters at small temperature disturbances due to viscous dissipation. This is accompanied by radical changes of flow characteristics. Bastanjian et al. (1965) showed that under certain conditions the steady-state flow cannot exist, and an oscillatory regime begins. [Pg.130]

Barber and coworkers made radical changes to the s.i.m.s. technique. They replaced the ion gun with an atom gun, redesigned the ion source to... [Pg.24]

More controversial (although sometimes cited as proven fact) have been claims (e.g., Taylor and Jakes, 1974 Taylor, 1982) that the bulk Moon is enriched roughly twofold in the cosmochemically refractory lithophile elements (a class that includes the REEs, the heat sources thorium and uranium, and the major elements aluminum, calcium, and titanium), and that compared to Earth s primitive mantle, the Moon s silicate mg ratio is much lower, i.e., its EeO concentration is much higher. Neither of these claims has been confirmed by recent lunar science developments, which include the advent of global thorium and samarium maps (Lawrence et al., 2002a Prettyman et al., 2002), data from lunar meteorites, and some radically changed interpretations of the Apollo seismic database. [Pg.587]

Much has changed since then. The internal state structure has been radically changed. The process of reorganization in the Russian administration has reached an advanced stage. Meanwhile, oil and gas still remain the major source of foreign currency for the country. [Pg.179]

Currently various sources contain experimental data that prove radical changes in the structure of water and other polar liquids when super small quantities of surface active nanoparticles (according to a number of papers—about thousandth of percent by weight) are introduced. When the water modified with nanoparticles is further applied in technological processes, this frequently results in qualitative changes in the properties of products, including the improvement of various mechanical characteristics. [Pg.192]

The color of an object will also vary with the color of the light source. Other standard illuminants may radically change the color appearance of an object because the area under their curves usually varies considerably with wavelength (Fig. 11). [Pg.370]

This means that the observed change in M mainly reflects a change in the source flux Q or the sink function. As an example we may take the methane concentration in the atmosphere, which in recent years has been increasing by about 0.5% per year. The turnover time is estimated to be about 10 years, i.e., much less than Tobs (200 years). Consequently, the observed rate of increase in atmospheric methane is a direct consequence of a similar rate of increase of emissions into the atmosphere. (In fact, this is not quite true. A fraction of the observed increase is probably due to a decrease in sink strength caused by a decrease in the concentration of hydroxyl radicals responsible for the decomposition of methane in the atmosphere.)... [Pg.67]

These extensive alterations in cell structure and the biochemical machinery are indicative of entry into an ametabolic condition. In this condition damage from free radicals is potentially decreased, certainly the loss of chlorophyll and chloroplast structure removes a major source of free radical generation. About 50% of the extremely desiccation tolerant monocots exhibit extensive loss of chlorophyll and ultrastructural organisation when desiccated. Dicots, ferns and bryophytes retain most of their chlorophyll and exhibit small changes in structure when dry (see Gaff,... [Pg.122]


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See also in sourсe #XX -- [ Pg.79 , Pg.80 ]




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Radical change

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