Systematics phases

Systematic phase 2 human treatment will start early September 1982 in Reims (Institut Jean-Godinot), in Paris (Hopital Tenon, Hopital St Louis, Hopital Avicenne and others) under the responsibility of several well-known oncologists. This list of curative centres is not limitative and any clinician wishing to apply for treating patients with SOAz will be warmly welcomed. 

Phase diagrams provide the thermodynamic foundation for all alloy work by presenting the equilibrium constitution of alloys. Systematic phase diagram studies were first initiated about 100 years ago, when the thermodynamic foundations of phase diagrams were being established an additional... 

The first systematic phase equilibrium study of hydrates was carried out at the US Bureau of Mines by Deaton and Frost for a number of natural gas hydrate systems. Although the separation methods were somewhat crude (e.g., a distinction could not be made between butane isomers), their hydrate formation pressure and temperature data continue to be foundations for prediction comparisons. 

The scaling behaviour is obvious, although there is no theoretical explanation for the systematic phase shift of 0 = tc/2 yet. An electronic influence on the hard-core diameter due to screening was demonstrated by Hafner and Heine [5.27], although the behaviour shown above is not reported. 

The correction of systematic phase errors in frequency domain spectroscopy can be achieved by use of a fluorophore of known lifetime as standard. It has been pointed out that a simple scattering solution can be used as standard. This ingenious suggestion very conveniently dispenses with the need for a fluorescent standard with a previously-determined lifetime value. Phase noise, another troublesome factor encountered in frequency domain fluorimetry, can be eliminated by use of a differential method. 

Zvyagin BB (1993) A contribution to polytype systematics. Phase Trans 43 21-25... 

A comprehensive overview of frequency-domain DOT techniques is given in [88]. Particular instraments are described in [166, 347, 410]. It is commonly believed that modulation techniques are less expensive and achieve shorter acquisition times, whereas TCSPC delivers a better absolute accuracy of optical tissue properties. It must be doubted that this general statement is correct for any particular instrument. Certainly, relatively inexpensive frequency-domain instruments can be built by using sine-wave-modulated LEDs, standard avalanche photodiodes, and radio or cellphone receiver chips. Instruments of this type usually have a considerable amplitude-phase crosstalk". Amplitude-phase crosstalk is a dependence of the measured phase on the amplitude of the signal. It results from nonlinearity in the detectors, amplifiers, and mixers, and from synchronous signal pickup [6]. This makes it difficult to obtain absolute optical tissue properties. A carefully designed system [382] reached a systematic phase error of 0.5° at 100 MHz. A system that compensates the amplitude-phase crosstalk via a reference channel reached an RMS phase error of 0.2° at 100 MHz [370]. These phase errors correspond to a time shift of 14 ps and 5.5 ps RMS, respectively. 

There are no systematic phase investigations on BeF2-Rp3 systems like those of the other AF2-RF3 systems. Some information is available, however, for ternary systems, e.g. KF-BeF2-Yp3 by Borzenkova et al. (1970). These studies are mainly carried out with respect to the formation of glasses. A general conclusion which can be drawn is that BeF2-Rp3 systems are of simple eutectic character and no intermediate phases have been observed. In connection with laser studies, some information is available on fluorite-related solid solutions (Cd, R)p2+8. but systematic phase studies on CdF2-Rp3 systems are absent. 

Information on the more recent literature of systematic phase studies of the title systems is compiled in table 12. In the following sections, attention is mainly focused upon intermediate phases and their properties. All presently known types of compounds are listed in table 13. Known phases also include fluorite-related solid solutions (Na, R)F2 6 and (K, R)F2+s. In the first case, ordered phases with the postulated formulae Na5RgF32 are reported. The appearance of ARF4 phases for the alkali metals is very controversial. 

In the late 1970s when they looked over the existing literature, Hashizume et al. noticed that even for the simplest of quasi-binary solutions, i.e., ternary solutions containing two homologous polymers in a single solvent, systematic phase equilibrium data were virtually lacking. Since such data seemed essential for testing any proposed expression for g for quasi-binary solutions, they [22] undertook extensive measurements of cloud-point curves, binodals, and critical points on mixtures of two narrow-distribution polystyrenes f4 and flO dissolved... 

XRD patterns showing the systematic phase evolution in the Henkel 7102 thick films/cp Ti... 

Although EO and PO-EO sulfonates and sulfates have been used in field tests, no systematic phase studies of these systems are presented in the literature, especially at reservoir conditions. Maerker and Gale [12] observed that the PO-EO-sulfates designed for the Loudon field showed a normal phase behavior using diesel oil, but a nonclassical phase behavior using crude oil in a salinity scan. It appears to be a general trend that these surfactants have low ability to form middle phases at low surfactant concentration. 

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