Two quantitative pKa prediction models for aliphatic carboxylic acids and for alcohols were developed by multiple linear-regression (MLR) analysis with empirical atomic descriptors. The acid and alcohol molecules were described by a set of five and four atomic descriptors, respectively. For the pKa model of 1122 aliphatic carboxylic acids, the squared correlation coefficient is 0.813 with a sta...

OBJECTIVE To describe the Registry and report preliminary data for the prevalence of 5 prothrombotic gene mutations in the normal Saudi population. METHODS Blood from consenting healthy Saudi individuals and patients with venous thrombosis (VT) from different regions of the Kingdom was collected from November 2001 until July 2007. The extracted DNA of each sample was kept at -70 degrees C unt...

9 Abstract 10 Mobile robots interact with a dynamically changing, physical environment. All tasks controlling such interactions must be per-11 formed reliably and in real-time. Information from the local sensors often is incomplete or inconsistent. Distributed sensor fusion is 12 a technique that enables a team to get a more complete view of the world with a better quality of the provided infor...

Fourteen dyes based on 2,4,5,7-tetranitrofluorene (TNF) as the electron acceptor have been designed and prepared in a one-step synthesis. By modifying donor, optical properties of could be efficiently tuned an absorption ranging between 450 nm 700 determined by UV–visible spectroscopy. To get deeper insight into properties, solvatochromism fourteen has also examined. For all dyes, positive was ...

We study the Ehresmann--Schauenburg bialgebroid of a noncommutative principal bundle as quantization gauge groupoid classical bundle. show that group is isomorphic to bisections bialgebroid, and we give crossed module structure for automorphisms bialgebroid. Examples illustrating these constructions include: Galois objects Taft algebras, monopole over quantum spheres not faithfully flat Hopf--G...

Absorption spectra of three aminoazobenzene dyes with various molecular size and alkyl tails have been recorded in solvents in the range between 200 to 600 nm. The photophysical behavior of a dissolved dye depends on the nature of its environment, i.e. the intensity, shape, and maximum absorption wavelength of the absorption band of dye in solution depends strongly on the solvent-solute interac...

Frequency is known to play a crucial role in lexical access. The notions primarily discussed in the literature are form frequency, (whole) word frequency and morpheme frequency, e.g. root frequency. In numerous studies (Alegre & Gordon, 1999; Baayen & al. 2007, a.m.o.), these characteristics were manipulated to find out whether various word forms are decomposed during lexical access or are stor...

Standard models of processing inflected morphology assume that processing latency to inflected word forms is inversely related to suffix frequency. However, number of lexical decision type of experiments done in Serbian indicates that suffix frequency is not correlated with processing latency. An alternative approach has been developed which assumes that cognitive system is sensitive to variati...