The nonexistence of digraphs with order equal to the Moore bound Md;k = 1+d+: : :+d k for d; k > 1 has lead to the study of the problem of the existence ofàlmost' Moore digraphs, namely digraphs with order close to the Moore bound. In 1], it was shown that almost Moore digraphs of order Md;k ? 1, degree d, diameter k (d; k 3) contain either no cycle of length k or exactly one such cycle. In thi...

Consider a branching random walk $$(V_u)_{u\in\mathcal T^{\text{IGW}}}$$ in $$\mathbb Z^d$$ with the genealogy tree $$\mathcal T^{\text{IGW}}$$ formed by sequence of i.i.d. critical Galton–Watson trees. Let $$R_n$$ be set points visited $$(V_u)$$ when index $$u$$ explores first $$n$$ subtrees . Our main result states that for $$d\in\{3,4,5\}$$ , capacity is almost surely equal to $$n^{(d-2)/{2}...

Evidence for the presence of serine and ethanolamine in SEP isolated from earthworms was presented previously (Rosenberg & Ennor, 1959). The present isolation of SEP in amounts sufficient to permit crystallization and chemical and physical analysis has also permitted comparison with D-SEP obtained by synthetic routes involving the use of D-serine. The results leave no doubt about the structure ...

We explore the possible existence of $J^{PC}=1^{+-}$ counterpart $X(3872)$ state in a coupled-channels calculation within constituent quark model, with aim confirming so-called $\tilde{X}(3872)$ observed by COMPASS Collaboration. Two states are found energy region $\tilde X(3872)$ signal, both almost equal mixture $c\bar c$ $2^1P_1$ and $D^*\bar D^{(*)}$ channels: One that can be identified as ...

BACKGROUND Plasminogen activator inhibitor-1 (PAI-1), the specific, fast-acting inhibitor of tissue-type plasminogen activator (t-PA), binds to fibrin and has been found in high concentrations within arterial thrombi. These findings suggest that the localization of PAI-1 to a thrombus protects that same thrombus from fibrinolysis. In this study, clot-bound PAI-1 was assessed for its ability to ...

abstract the amount of needed fertilizer in agricultural soils depends to the type of crop. absence of enough fertilizer may cause in tensions in plants and consequently result in decrease in amount of product. according to the agricultural literature, soils containing total nitrogen amounts (n %) between 0.1-0.15 percent are considered as soils containing normal amounts of nitrogen. the values...