Let $X$, $D$ be a smooth projective surface and simple normal crossing divisor on respectively. Suppose $\kappa (X, K\_X + D)\ge 0$, let $C$ an irreducible curve $X$ whose support is not contained in $\alpha$ rational number $\[ 0, 1 ]$. Following Miyaoka, we define orbibundle $\mathcal{E}\alpha$ as suitable free subsheaf of log differentials Galois cover $X$. Making use prove Bogomolov–Miyaoka...

For a system of n self-incompatibility alleles, neglecting mutation and random drift, it is shown that the completely symmetric equilibrium is locally stable, and any allelic frequency less than q equals 1 + a minus the square root of 1 + a-2, where a equals [2(n minus 1)]- minus 1, will increase. For all n, q greater than (2n)- minus 1, but if n greater than 1, q is approximately equal to (2n)...

We study two subposets of the partition lattice obtained by restricting block sizes. The rst consists of set partitions of f1; : : : ; ng with block size at most k; for k n ? 2: We show that the order complex has the homotopy type of a wedge of spheres, in the cases 2k + 2 n and n = 3k + 2: For 2k + 2 > n; the posets in fact have the same S n?1-homotopy type as the order complex of n?1 ; and th...

Irrigation with distillery effluent, besides influencing crop yield, may have considerable impact on physical properties of soil because of its high salt and organic carbon contents. This experimental study was conducted to evaluate the effect of distillery effluent on hydraulic conductivity of a sandy loam alluvial soil and compare the effect of inorganic salts of potassium (K) with that of di...

The isoperimetric problem of maximizing all eigenvalues the Laplacian on a metric tree graph within class trees given average edge length is studied. It turns out that, up to rescaling, unique maximizer k ...

BACKGROUND/AIMS Ultrafiltration that occurs during hemodialysis (HD) promotes profound alterations in a relatively short period of time. The dialysate content of bicarbonate (DBic) and potassium (DK) may have impact over intradialytic hemodynamics, which goes beyond ultrafiltration, and its impact was evaluated in a prospective cohort. METHODS 30 patients under HD were submitted to hemodynami...

Since adenosine is present in normal brain tissue and cerebrosipinal fluid and since it dilates the pial vessels, it is possible that adenosine, in addition to H-+, is also a mediator of the metabolic regulation of cerebral blood flow. Evidence supporting this hypothesis was obtained under various experimental conditions characterized by achange in brain oxygen supply. The brain was frozen in...

To better understand the molecular basis for some of the unique mechanical properties of tonic smooth muscle, we use a laser trap to assay the mechanochemistry of single smooth muscle heavy meromyosin molecules lacking a seven-amino acid insert in the nucleotide binding loop (minus insert). We measured a second-order ATP-induced actin dissociation rate, kT, of 2.2 x 10(6) m(-1) s(-1), an ADP re...

Guanylyl cyclase A (GCA) and soluble guanylyl cyclase (sGC) encode GCs in Dictyostelium and have a topology similar to 12-transmembrane and soluble adenylyl cyclase, respectively. We demonstrate that all detectable GC activity is lost in a cell line in which both genes have been inactivated. Cell lines with one gene inactivated were used to characterize the other guanylyl cyclase (i.e. GCA in s...

We classify triangleand pentagon-free distance-regular graphs with diameter d ≥ 2, valency k, and an eigenvalue multiplicity k. In particular, we prove that such a graph is isomorphic to a cycle, a k-cube, a complete bipartite graph minus a matching, a Hadamard graph, a distance-regular graph with intersection array {k, k − 1, k − c, c, 1; 1, c, k − c, k − 1, k}, where k = γ(γ + 3γ + 1), c = γ(...