We consider the problem of finding bounds on the size of ternary and quaternary equidistant constant weight codes. We present a computer realization of an algorithm for solving the maximum clique problem. We use it for finding the exact values of the maximum size for ternary and quaternary equidistant constant weight codes for all open cases for n ≤ 10 are found.

A simple construction of quaternary hermitian self-orthogonal codes with parameters [2n + 1, k + 1] and [2n + 2, k + 2] from a given pair of self-orthogonal [n, k] codes, and its link to quantum codes is considered. As an application, an optimal quaternary linear [28, 20, 6] dual containing code is found that yields a new optimal [[28, 12, 6]] quantum code.

Quaternary prevention should be implemented to minimize harm to patients because the ultimate goal of medicine is to prevent disease and promote health. Primary care physicians have a major responsibility in quaternary prevention, and the establishment of clinical epidemiology as a distinct field of study would create a role charged with minimizing patient harm arising from over-medicalization.

November 21, 2016 Type Package Title Identification of mutational clusters in protein quaternary structures. Version 1.6.0 Date 2014-09-25 Author Gregory Ryslik, Yuwei Cheng, Hongyu Zhao Maintainer Gregory Ryslik Description Identifies clustering of somatic mutations in proteins over the entire quaternary structure. License GPL-2 biocViews Clustering, Proteomics, Somat...

1 GULD, Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden 2 Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, Sweden 3 Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo, Egypt 4 State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Acade...

Objectives: The aim of this study was to evaluate and compare the efficacy of 3 rd generation quaternary ammonium compounds and formaldehyde for fumigation of operation theatres. Materials and Methods: Fumigation and fogging of operation theatres by formaldehyde and 3 rd generation quaternary ammonium compounds respectively were done by standard procedures. A total of 144 samples (swabs as well...

Quaternary ammonium compounds, effective as sanitizing agents for food plant equipment under certain conditions, are not well suited as sanitizers for water of high mineral content. Mueller and Seeley (1951) have demonstrated under controlled conditions that various metallic cations can decrease the germicidal action of a quaternary in solution. Knowledge of how such interference takes place co...

The progress of antimicrobial therapy contributes to the development of strains of fungi resistant to antimicrobial drugs. Since cationic surfactants have been described as good antifungals, we present a SAR study of a novel homologous series of 140 bis-quaternary imidazolium chlorides and analyze them with respect to their biological activity against Candida albicans as one of the major opport...

In the title compound, C(19)H(26)O(2), the A ring adopts a chair conformation, whereas the B and C rings both adopt distorted half-chair conformations with the quaternary C atom common to both rings lying 0.577 (3) and 0.648 (3) Å out of the approximate plane defined by the remaining five C atoms (r.m.s. deviations = 0.1386 and 0.1156 Å) for the B and C rings, respectively. Mol-ecules are assem...

We use Quaternary stratigraphy to reconstruct landscape evolution and measure tectonic deformation of the Olympic Mountains section of the Pacifi c Northwest Coast Range. An important motivation for understanding orogenesis here, and throughout the Coast Range, is the concern about the relationship of active deformation to seismic hazards associated with the Cascadia subduction zone. There is a...