نتایج جستجو برای: ژن clar
تعداد نتایج: 15943 فیلتر نتایج به سال:
The aim of this study was to investigate the effect of metronidazole resistance (MtzR) and clarithromycin resistance (ClaR) on the eradication rate for omeprazole, clarithromycin, and metronidazole triple-therapy regimen and on the development of posttherapy drug resistance in a region of high rates of MtzR. One hundred ninety-six Helicobacter pylori isolates were recovered from patients with d...
BACKGROUND The laparoscopic approach has become increasingly incorporated into the development of new surgical procedures. An ever-increasing number of surgeons desire methods that minimize surgical trauma and provide improved cosmetic outcomes. Since 2014, we have performed two-port laparoscopic surgery using a transumbilical multichannel glove port and a 12-mm port. The aim of this study was ...
We provide an optimality criteria for a perfect matching with respect to the Clar problem in 2-connected plane bipartite graphs.
We show how precision lensing measurements can be obtained through the lensing magnification effect in high redshift 21cm emission from galaxies. Normally, cosmic magnification measurements have been seriously complicated by galaxy clustering. With precise redshifts obtained from 21cm emission line wavelength, one can correlate galaxies at different source planes, or exclude close pairs to elim...
Canadian scientists and engineers are developing a prototype radio telescope using a novel concept that will permit very large aperture antennas to be constructed at a fraction of current costs. At a diameter of about 200 m, the Canadian Large Adaptive Reflector (CLAR) will be the largest fully steerable radio telescope in the world. At short cm wavelengths it will yield a factor of four improv...
The so-called leapfrog transformation that was first introduced for fullerenes (trivalent polyhedra with 12 pentagonal faces and all other faces hexagonal) is generalised to general polyhedra and maps on surfaces. All spherical polyhedra can be classified according to the i r leapfrog order. A polyhedron is said to be of Clar type if there exists a set of faces that cover each vertex exactly on...
We outline the construction of an algebraic (numerical) representation for Clar's valence formulas which in their geometrical form are illustrated with π-aromatic sextets as inscribed circles in benzenoid rings.
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