Suspensions of anisometric particles in the nematic phase of a liquid crystalline host solvent were prepared. We chose Claytone AF, a commercial quaternary ammonium surfactant treated montmorillonite, with an aspect ratio of up to 1:2000, and dimethyldioctadecylammonium bromide treated Laponite, with an aspect ratio of 1:8 as the dispersed particles. K15, a nematogenic compound (also known as 5...

* Correspondence: [email protected]. vn Department of Scientific Fundamentals, Posts and Telecommunications Institute of Technology, Hanoi, Vietnam Full list of author information is available at the end of the article Abstract In this article, we present a new iteration method for finding a common element of the set of fixed points of p strict pseudocontractions and the set of solutions of equili...

The Streptomyces K15 transferase is a penicillin-binding protein presumed to be involved in bacterial wall peptidoglycan crosslinking. It catalyses cleavage of the peptide, thiol ester or ester bond of carbonyl donors Z-R1-CONH-CHR2-COX-CHR3-COO- (where X is NH, S or O) and transfers the electrophilic group Z-R1-CONH-CHR2-CO to amino acceptors via an acyl-enzyme intermediate. Kinetic data sugge...

A model in which &I and Q2 resonance contributions add,coherently to a gaussian background is shown to reproduce the mass dependence of It+the JP = l+K*n and pK partial waves in K*p -. K TT TT p at 13 GeV/c. Through a fit to the data, the mass and total width for Q1 are found to be m= 1289k 3 rt (25) MeV, F = 150 f. 9(*70) MeV and for Q,, m = 1404 f 3(*10) MeV, I’ = 142 * 4(rt15) MeV, where est...

PURPOSE The purpose of our study was to determine whether arrestin residues previously predicted by computational modeling to interact with an aspartic acid substituted rhodopsin tail are actually involved in interactions with phospho-residues on the rhodopsin cytoplasmic tail. METHODS We generated arrestin mutants with altered charges at predicted positions. These mutants were then tested fo...

A nonphotochemical laser-induced phase transition was studied in a supercooled 4;{'}-n -pentyl-4-cyanobiphenyl (5CB, also referred to as PCB and K15) liquid crystal, using linearly polarized 45 ps light pulses at a wavelength of 532 nm. The laser induced nucleation from the metastable supercooled isotropic phase to the nematic phase during slow cooling (0.001 degrees C/min) and high light inten...

It was shown by Gerhard Ringel that one of the three non-isomorphic Steiner triple systems of order 15 having an automorphism of order 5 may be biembedded as the faces of a face 2-colourable triangular embedding of K15 in a suitable orientable surface. Ringel’s bi-embedding was obtained from an appropriate current graph. In a recent paper, the present authors showed that a second STS(15) of thi...

E. coli strain 536 (O6:K15:H31) isolated from a case of acute pyelonephritis, expresses S-fimbrial adhesins, P-related fimbriae, common type I fimbriae, and hemolysins. The respective chromosomally encoded determinants were cloned by constructing a genomic library of this strain. Furthermore, the strain produces the iron uptake substance, enterocheline, damages HeLa cells, and behaves in a seru...

Of the two known vasoactive intestinal peptide receptors (VPAC1R and VPAC2R), the VPAC2R is expressed in skeletal muscle. To evaluate the function of the VPAC2R in the physiological control of skeletal muscle mass, we utilized the VPAC1R selective agonist [K15,R16,L27]VIP(1-7) GRF(8-27)-NH2 and the VPAC2R selective agonist Ro-25-1553 to treat mice and rats undergoing either nerve damage-, corti...