Range protons

Remarkable downfield shifts of the respective amide protons, ranging from AS 0.9 to 2.5 ppm, are exhibited by receptors [96]—[98] on addition of tetrabutylammonium dihydrogenphosphate, hydrogensulfate and chloride salts to deuteriated acetonitrile-DMSO solutions. The resulting... 

Load the raw data of the ID H experiment measured for peracetylated glucose D NMRDATA GLUCOSE 1D H GH 001001.FID and perform a Fourier transformation. Inspect the spectrum, showing the entire proton range, and adjust the phases manually to get pure absorption lines throughout. Try out the Automatic button in the Phase button panel for this purpose. Do not forget to store the spectrum (... 001001.1R). 

Cemy et al (Ref 109) calcd range-eneigy relations for protons and a - particles in RDX and HMX, Pb styphnate and Pb azide, as shown in Fig 1. The a - particle ranges were obtained from established proton ranges the difference in range caused by variations in electron capture and loss were estimated from the known value for air by assuming that this effect depended only on the molecular electron density... 

In Fig 1 the range-energy relations for a-particles and protons were plotted. The ranges for protons were calcd by Cerny et al (Ref 109) as listed in Table 15 and, as stated previously, the Oi-particle ranges were obtained from the established proton ranges... 

The l3C peaks are distributed over a larger chemical-shift range in comparison with the proton range. 

Partially quatemized poly[thio-l-(N-R1,N-R2-aminomethyl)ethylene]s are water-soluble. This allows to study their acid-base behaviour in water over the whole protonation range 69). 

The following equations are frequently useful for obtaining ranges for particles in terms of proton ranges ... 

Cemy et al. [41] calculated range-energy relations for protons and a-particles in various explosives, including lead azide (Figure 8). The a-particle ranges were obtained from established proton ranges. 

J.R Janni, Proton range-energy tables 1 keV-10 GeV, At. Data Nucl. Data Tables 27 (1982) 147. 

Proton range telescope employing 3 proportional counters... 

They employed a proton range telescope with a threshold at about 330 Mev in most of their measurements. The type of results they obtained are shown in Figs. 9 and 10 for the case of carbon and lead. At small angles the Coulomb scattering interferes with the nuclear scattering. The heavier nuclei with larger radii have much narrower diffraction peaks. However, even in a Ught nucleus hke carbon at 3 40 Mev, the differential cross-section has dropped by a factor of about 10 by 30°. 

As predicted by Eq. (14.65), the initial slope of the extrapolated line in Fig. 10 is 2, and the second linear segment has a slope of 1, before the pH profile levels out. Thus, in enzyme catalysis, the slope in excess of 1 usually indicates that the dissociation of a group on the substrate is involved (Schulz, 1994). However, the comphcations of several overlapping protonation ranges are increased by substrate ionizations, so it is always prudent, if possible, to use another substrates that do not ionize over the pH range under study (Tipton Dixon, 1979 Comish-Bowden, 1995). 

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