A total of 1918 loci, detected by the hybridization of 938 expressed sequence tag unigenes from 26 Triticeae cDNA libraries, were mapped to wheat homoeologous group 4 chromosomes using a set of deletion, ditelosomic, and nulli-tetrasomic lines. The 1918 EST loci were not distributed uniformly among the three group 4 chromosomes; 41, 28, and 31% mapped to chromosomes 4A, 4B, and 4D, respectively. This pattern is in contrast to the cumulative results of EST mapping in all homoeologous groups, as reported (...) elsewhere, that found the highest proportion of loci mapped to the B genome. Sixty-five percent of these 1918 loci mapped to the long arms of homoeologous group 4 chromosomes, while 35% mapped to the short arms. The distal regions of chromosome arms showed higher numbers of loci than the proximal regions, with the exception of 4DL. This study confirmed the complex structure of chromosome 4A that contains two reciprocal translocations and two inversions, previously identified. An additional inversion in the centromeric region of 4A was revealed. A consensus map for homoeologous group 4 was developed from 119 ESTs unique to group 4. Forty-nine percent of these ESTs were found to be homoologous to sequences on rice chromosome 3, 12% had matches with sequences on other rice chromosomes, and 39% had no matches with rice sequences at all. Limited homology was found between wheat ESTs on homoeologous group 4 and the Arabidopsis genome. Forty-two percent of the homoeologous group 4 ESTs could be classified into functional categories on the basis of blastX searches against all protein databases. (shrink)

We investigate the class of those algebras in which is a de Morgan algebra, is a quasi-Stone algebra, and the operations \ and \ are linked by the identity x**º = x*º*. We show that such an algebra is subdirectly irreducible if and only if its congruence lattice is either a 2-element chain or a 3-element chain. In particular, there are precisely eight non-isomorphic subdirectly irreducible Stone de Morgan algebras.

We consider a uniform r-bundle E on a complex rational homogeneous space X and show that if E is poly-uniform with respect to all the special families of lines and the rank r is less than or equal to some number that depends only on X, then E is either a direct sum of line bundles or unstable with respect to some numerical class of a line. So we partially answer a problem posted by Muñoz et al.. In particular, if (...) X is a generalized Grassmannian \ and the rank r is less than or equal to some number that depends only on X, then E splits as a direct sum of line bundles. So we improve the main theorem of Muñoz et al. 664:141–162, 2012, Theorem 3.1) when X is a generalized Grassmannian. Moreover, by calculating the relative tangent bundles between two rational homogeneous spaces, we give explicit bounds for the generalized Grauert–Mülich–Barth theorem on rational homogeneous spaces. (shrink)

Antibiotic resistance in bacteria has become a great threat to global public health. Tigecycline is a next‐generation tetracycline that is the final line of defense against severe infections by pan‐drug‐resistant bacterial pathogens. Unfortunately, this last‐resort antibiotic has been challenged by the recent emergence of the mobile Tet(X) orthologs that can confer high‐level tigecycline resistance. As it is reviewed here, these novel tetracycline destructases represent a growing threat to the next‐generation tetracyclines, and a basic framework for understanding the molecular epidemiology and (...) resistance mechanisms of them is presented. However, further large‐scale epidemiological and functional studies are urgently needed to better understand the prevalence and dissemination of these newly discovered Tet(X) orthologs among Gram‐negative bacteria in both human and veterinary medicine. (shrink)

In this note we shall show that if L is a balanced pseudocomplemented Ockham algebra then the set ${\fancyscript{I}_{k}(L)}$ of kernel ideals of L is a Heyting lattice that is isomorphic to the lattice of congruences on B(L) where ${B(L) = \{x^* | x \in L\}}$ . In particular, we show that ${\fancyscript{I}_{k}(L)}$ is boolean if and only if B(L) is finite, if and only if every kernel ideal of L is principal.

In this paper, we introduce a variety bdO of Ockham algebras with balanced double pseudocomplementation, consisting of those algebras of type where is an Ockham algebra, is a double p -algebra, and the operations and are linked by the identities [ f ( x )]* = [ f ( x )] + = f 2 ( x ), f ( x *) = x ** and f ( x + ) = x ++ . We give a description of the (...) congruences on the algebras, and show that there are precisely nine non-isomorphic subdirectly irreducible members in the class of the algebras via the Priestley duality. We also describe all axioms in the variety bdO , and provide a characterization of all subvarieties of bdO determined by 12 none-equivalent axioms, identifying therein the biggest subvariety in which every principal congruence is complemented. (shrink)

İndividualizm və xüsusilə personalizm filosof-mütəfəkkirlərin diqqətini xüsusilə cəlb edən məsələlər sırasında olublar. İnsanın cəmiyyət ilə münasibətlərində öz xüsusiyyətləri, özgürlüyü və təkrar olunmazlığını qoruyub saxlamasını ifadə edən bu problemi müəyyən etməyin əhəmiyyətindən danışsaq, konkret bir şəxsə məxsus göstəricilərdən çıxış etməklə bütöv və hərtərəfli nəticə əldə etmək mümkündür. Qeyd olunan vəzifəni həyata keçirmək o qədər də asan deyildir. Çünki söhbət müəyyən bir şəxsi başqalarından ayırmaqdan başlayaraq, onun unikallığının formalaşması və mövcudluğunun müəyyən olunmasına qədər davam edən bir prosesi öyrənməkdən gedir. Dünyaya fərd kimi (...) gələn insan öz fəaliyyəti, özünüdərketməsi sayəsində şəxsiyyətin qabil ola biləcəyi bir varlığa çevrilə bilər. Məhz cəmiyyətin normal fəaliyyəti və inkişafı üçün onun hər bir üzvünün müəyyən qədər özünəməxsusluğu zəruridir. Və cəmiyyət üzvlərinin rəngarəngliyi, burada aydın ifadə olunmuş fərdiyyətlər, şəxsiyyətlərin mövcudluğu hər bir ictimai quruluşun, onun mədəniyyətinin həqiqi zənginliyini təmin edir. Buna görə də, insanların fərdi özünəməxsusluğuna malik olması sosial inkişafın qanunauyğunluğu kimi də qəbul edilir. Məqalədə Avropa personalistlərinin fikirlərinə istinadən belə proseslər izlənilib. (shrink)

The number of edges in a shortest walk from one vertex to another vertex of a connected graph G is known as the distance between them. For a vertex x and an edge e = a b in G, the minimum number from distances of x with a and b is said to be the distance between x and e. A vertex x is said to distinguish two distinct edges e 1 and e 2 if the distance between x and (...) e 1 is different from the distance between x and e 2. A set X of vertices in a connected graph G is an edge metric generator for G if every two edges of G are distinguished by some vertex in X. The number of vertices in such a smallest set X is known as the edge metric dimension of G. In this article, we solve the edge metric dimension problem for certain classes of planar graphs. (shrink)

‘The door's being shut made the room warmer.’ What does it mean and what are our reasons for saying it? There is much agreement that singular statements of cause and effect are conditional statements, and also that they are more than that, but at this early moment of inquiry the agreement ends. Can it not be carried further?