H determination

The pH meter must be standardised before making any measurements, using pH standard solutions that encompass the required pH value. The pH electrode, whose tip is normally immersed in 3 M KC1 solution, must be exhaustively rinsed with double distilled water and, if necessary, carefully dabbed dry. After use, the electrode must again be carefully rinsed with double distilled water, dabbed dry and returned to the 3 M KQ solution. If measurements are carried out using protein solutions a film of protein can form 

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Partanen, J. I. Karki, M. H. Determination of the Thermodynamic Dissociation Constant of a Weak Acid by Potentiometric Acid-Base Titration, /. Chem. Educ. 1994,... 

Conte, E. D. Barry, E. E. Rubinstein, H. Determination of Caffeine in Beverages by Capillary Zone Electrophoresis, ... 

We describe a parametric point calculation of the efficiency of a simple CCGT plant, firstly with no feed heating. It is supposed that the main parameters of the gas turbine upper plant (pressure ratio, maximum temperature, and component efficiencies) have been specified and its performance (t)o)h determined (Fig. 7.3 shows the T,s diagram for the two plants and the various state points). 

Procedures techniques visant h determiner le taux de production, la pression, la temperature, la permeability et I effet pelliculaire du reservoir et a prelever les echantillons de gaz et de liquides en vue de les analyser. 

Configurations and d.r. s or ee s of remaining stereocenters presumed to be identical with that of starting complex 16. h Determined by H-NMR spectroscopy. c Enantiomerically pure compound. J Diastereomerically pure compound. Stereochemistry of minor isomer not reported. 

Figure 5.31 LC-electrospray-MS-MS spectrum of the column eluate at around 22 min in the analysis of the peptide mixture from the tryptic digest of glycoprotein TIME-EA4 from silkworm diapause eggs. Reprinted from Bioorg. Med. Chem., 10, Kurahashi, T., Miyazaki, A., Murakami, Y., Suwan, S., Franz, T., Isobe, M., Tani, M. and Kai, H., Determination of a sugar chain and its linkage site on a glycoprotein TIME-EA4 from silkworm diapause eggs by means of LC-ESI-Q-TOF-MS and MS/MS , 1703-1710, Copyright (2002), with permission from Elsevier Science.

Maron, Samuel H.. Determination of intrinsic viscosity from one-point measurements. Journal of Applied Polymer Science 5,15 (1961) 282-284. 

Oppenheimer, L., Capizzi, T. R, Weppelman, R. M., and Mehta, H., Determining the Lowest Limit of Reliable Assay Measurement, Anal. Chem. 55,... 

Yamaoka, 1. and Tsuji, H., Determination of burning velocity using counterflow flames, Proc. Combust. Inst.,... 

Muller, H., Determination of the carotenoid content in selected vegetables and fruit by HPLC and photodiode array detection, Z. Lebensm. Enters. Forsch. A, 204, 88, 1997. 

Abraham, M. H., Zhao, Y. H. Determination of solvation descriptors for ionic spedes hydrogen bond addity and basicity. J. Org. Chem. 2004, 69,... 

Ostergaard, J., Hansen, S. H., Larsen, C., Schou, C., Heegaard, N. H. Determination of octanol-water partition coefficients for carbonate esters and other small organic molecules by microemulsion electrokinetic chromatography. Electrophoresis 2003, 24, 1038-1045. 

Katayama, M., Masuda, Y., and Taniguchi, H., Determination of alcohols by high-performance liquid chromatography after pre-column derivatization with 2-(4-carboxyphenyl)-5,6-dimethylbenzimidazole,/. Chromatogr., 585,219, 1991. 

Tscheme, R. J. and Umagat, H., Determination of isophenindamine in phen-indamine tartrate using an argentated high-performance liquid chromatographic mobile phase, /. Pharm. Sci., 69, 342, 1980. 

Yokoyama, Y., Kondo, M. and Sato, H., Determination of alkylbenzenesulpho-nates in environmental water by anion-exchange chromatography, /. Chromatogr., 643, 169, 1993. 

Good results are obtained for electrodes with sulphides of Pb, Cd and Cu(II), but with certain other sulphides the response time is unsatisfactory. Interference occurs in highly acidic solutions (H2S formation) and in alkaline solutions (at pH > 11) other metal ions sometimes disturb determinations with the metal ISE also, anions may cause difficulties, e.g., in a Cu(H) determination at a Cu(H) ISE if Cu2+ and Cl" are simultaneously present in the... 

Moores, R., Campbell, H., Determination of theobromine and caffeine in cocoa materials, Anal. Chem., 20, 40, 1948. 

McDonagh J., Fukue H. Determinants of substrate specificity for factor Xin. Semin Thromb Hemost 1996 22,369-76. 

Another approach widely used for nonadiabatic reactions is the diabatic one. The channel Hamiltonians Hex and H determining the zeroth-order Born-Oppenheimer electron states of the donor A and acceptor B and the perturbations Vt and Vf leading to the forward and reverse electron transitions, respectively, are separated... 

Plass, M., Valko, K., Abraham, M. H., Determination of solute descriptors of tripeptide derivatives based on high-throughput gradient high-performance liquid chromatography retention data, J. Chromatogr. A. 1998, 803(1-2), 51-60. 

Only recently have large numbers of open clusters become the subject of elemental abundance determinations other than those of the lightest elements (Li, C). A survey of the literature (not guaranteed to be complete), including some unpublished data kindly made available for this contribution, revealed [Fe/H] determinations for 45 open clusters. Of these, 33 have determinations of at least some of the a-elements, and these are collected in Table 1. There are very few clusters in common between studies, so it is not possible to investigate systematic differences between studies, nor to bring these measures to a common system. 

In Franchini et al. (2004) we introduced four Lick/IDS index-index diagrams, i.e. NaD vs Ca4227, NaD vs Mg2, NaD vs Mgb, and NaD vs CaMg, to identify SSA and a-enhanced stars irrespectively of their Teg, log g and [Fe/H]. By applying this method to the 84 normal (i.e. excluding binaries and variable) stars from the S4N web site with [Fe/H] determined by AP04, it results that 8 stars are... 

Determined in pentadeuteropyridine unless stated otherwise. h Determined in D20. 

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