Much of the work in digital preservation has focused on the perceived threat of format obsolescence. The standard approach combines tools to validate formats and collect format metadata, registries preserving format specifications, and format obsolescence notification systems. The idea is that when a format becomes obsolete a notification will be issued, a converter created from the specificati...

Let $f\_i\colon X \rightarrow \mathbf{C}$ , for $i$ integer between $1$ and $p$ be analytic functions defined on a complex variety $X$. us consider $\mathcal{D}\_X$ the ring of linear differential operators $\mathcal{D}\_X \[s\_1, \ldots, s\_p] = \mathbf{C}X \otimes{\mathbf{C}} \mathcal{D}\_X$. $m$ section holonomic -module. We denote $\mathcal{B}(m, x\_0, f\_1, f\_p)$ ideal $\mathbf{C} s\_p]$ ...

2-[3-(2-formylnaphthoxy)-2-hydroxypropoxy] naphthaldehyde (1) have been prepared by reaction of 2-hydroxynaphthaldehyde with 1,3-dichloro-2-propanol. new n2o3 macro-acyclic ligands (l1, l2) synthesized from the reaction of (1) with aniline or cyclohexylamine. ni (ii), co (ii) and cu (ii) complexes was prepared from reaction of schiff-bases with metal chloride and nitrate salts. all of these com...

the study of spatial and temporal changes in climate parameters, is one the most important issues in the world's climate research. study of changes in cloud cover as one of the most important climate parameters is important, because clouds are in top of hydrologic cycle and changes in them make changes in spatial and temporal variations in other climate parameters. in this study, the spati...

background: to evaluate the immunological properties of leishmania major excreted- secreted (e-s) products on the progress of leishmaniasis in susceptible balb/c mice. methods: promastigotes of the leishmania major were cultured and e-s products were collected during the culture preiod. groups of balb/c mice (n= 12) were immunized with e-s products or whole antigen. animals were challenged with...

conclusions our study is the first to investigate patients with lch and its possible association with hhv-6 in iran. considering the p level of 0.11, which is statistically insignificant, our findings fail to support the hypothesis of a possible role for hhv-6 in the pathogenesis of lch. these results are in concordance with previous investigations showing negative results. results there was no...