Huyskens

Eynde, T. Zeegeis-Huyskens, I. B. Rulinda, G, Leroy, and G. Louterman-Leloup, Bull. Soc. Chim. Belg. 84,845 (1975). 75BSB1189 J. Elguero, R Faure, J.-P. Galy, and E. J. Vincent, Bull. Soc. Chim. 

JST(222)345 M. Graindourze, Y. Smets, T. Zeegers-Huyskens, and G. Maes,... 

M. T. Nguyen, A. K. Chandra, andT. Zeegers-Huyskens, J. Chem. Soc., Faraday Trans. 94,1277 (1998). 

The pioneering work of Gilkerson and co-workers [122-130] and Huyskens and colleagues [131,132] allows the determination of the corresponding equilibrium constants from conductivity measurements. If all equilibria, Eq. (4)-(6), are involved, the association constants of an electrolyte without (K l) and with (KA ) addition of the ligand at concentration cL of the ligand L are given by the relationship [132]... 

M. Goethals, B. Czarnak-Matusewicz, and T. Zeegers-Huyskens, J. Heterocycl. Chem., 1999, 36, 49. 

Zhang RB, Zeegers-Huyskens T, Ceulemans A, Nguyen MT (2005) Interaction of triplet uracil and thymine with water. Chem Phys 316 35... 

Several crop production techniques have been reported to enhance phytochemical content in several fruits and vegetables (Schreiner 2005). Several postharvest practices and techniques can also affect the content of phytochemicals (Beuscher and others 1999 Goldmann and others 1999 Huyskens-Keil and Schreiner 2004). 

Huyskens-Keil S and Schreiner M. 2004. Quality dynamics and quality assurance of fresh fruit and vegetables in pre- and postharvest. In Dris R and Jain S, editors. Production Practices and Quality Assessment of Food Crops. Dordrecht Kluwer Academic, pp. 101 119. 

Huyskens-Keil S, Prono-Widayat H, Liidders P and Schreiner M. 2005. Postharvest quality of pepino (Solarium muricatum Ait.) fruit in controlled atmosphere storage. J Food Eng 77(3) 628-634. 

Prono-Widayat H, Schreiner M, Huyskens-Keil S and Liidders, P. 2003. Effect of ripening stage and storage temperature on postharvest quality of pepino (Solanum muricatum Ait.). J Food Agric Environ 1 35— 41. 

Tayyari, S. F., Zeegers-Huyskens, Th. and Wood, J. L. (1979a). Spectrochim. Acta. Sect. A 35, 1265... 

Measurement of multiple acidic sites in thymine. Because we have already embarked on the study of uracil (see Preliminary Results), we will begin with thymine (4a, Figure 1), which is the 5-methyl-derivative of uracil. Our calculations at B3LYP/6-31+G predict that the gas-phase acidities of thymine N1 and thymine N3 should be 331 and 343 kcal/mol, respectively. These values are in agreement with earlier calculations by Zeegers-Huyskens et al. ... 

Huyskens, P. L., and M. C. Haulait-Pirson. 1985. Anew expression for the combinatorial entropy of mixing in liquid mixtures.J. Mol. Liq. 31 135-151. 

Ruelle, R, C. Rey-Mermet, M. Buchmann, H. Nam-Tran, U. W Kesselring, and P. L. Huyskens. 1991. Anew predictive equation for the solubility of drugs based on the thermodynamics of mobile diSttieten. 

BSB23 T. Zeegers-Huyskens Bull. Soc. Chim. Belg., 1988,97,23. 401... 

The proton affinity and acidity of uracil itself (2a) has also been the subject of computational investigation, primarily by the groups of Zeegers-Huyskens and Lee.52-57 Lee and coworkers have also conducted a series of experimental investigations that have established that uracil has four sites that are more acidic than water (Nl, N3, C5, and C6) and that 04 is 8 kcal mol-1 more basic than 0254-56 Gronert and coworkers also conducted clever mass spectrometric experiments that effected decarboxylation of orotate to form the C6-deprotonated uracil (3a), which was then used to measure the acidity of the C6-H.57,58a Gronert s calculations and experiments, later confirmed by Lee and Kurinovich using different uracil derivatives,55 established that the C6 site of uracil is quite acidic with a gas phase acidity (A//acid) of —369 kcal mol-1, this site is as acidic as acetone. Recent experiments in water, however, indicate that the C6-H of 1,3-dimethyl uracil has a pK of 34, considerably less acidic than that of acetone (pA a — 19).58b... 

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