Let M be a complete metric ANR-space such that for any metric compactum K the function space C(K,M) contains a dense set of Bing (resp., Krasinkiewicz) maps. It is shown that M has the following property: If f : X → Y is a perfect surjection between metric spaces, then C(X,M) with the source limitation topology contains a dense Gδ-subset of maps g such that all restrictions g|f(y), y ∈ Y , are ...

Records of ocean/atmosphere dynamics over the past centuries are essential to understand processes driving climate variability. This is particularly true for Northwest Atlantic which a key region with an role in global regulation. Over two decades, coralline red algae have been increasingly used as environmental and climatic archives marine realm hold potential extend long-term instrumental mea...

Mycophenolic acid is a secondary extracellular metabolite of Penicillium strains with numerous pharmaceutical properties such as antibiotic and immunosuppressive uses. The aim of this work is the survey of the effect of phenylglyoxal and n-ethylmaleimide concentration in culture medium on mycophenolic acid production by Penicillium brevi-compactum ATCC16024 was investigated. Batch submerged fer...

Various fractions were extracted from cell-wall material of Eupenicillium crustaceum, Penicillium brevi-compactum, P. decumbens, Aspergillus flavipes and A. ochraceus. The most characteristic fractions, which may have chemotaxonomic relevance, were F1I, an alpha-(1-3) glucan (alkalisoluble, water-insoluble), which amounted to 16.2-32.5% of the cell-wall material, and F1S (alkali and water-solub...

An infinite set A in a space X converges to a point p (denoted by A −→ p) if for every neighbourhood U of p we have |A\U | < |A| . We call cS(p,X) = {|A| : A ⊂ X and A −→ p} the convergence spectrum of p in X and cS(X) = ∪{cS(x, X) : x ∈ X} the convergence spectrum of X. The character spectrum of a point p ∈ X is χS(p,X) = {χ(p, Y ) : p is non-isolated in Y ⊂ X} and χS(X) = ∪{χS(x,X) : x ∈ X} i...

In this paper we consider a number of sequence and function spaces that are known to be homeomorphic to the countable product of the linear space σ. The spaces we are interested in have a canonical imbedding in both a topological Hilbert space and a Hilbert cube. It turns out that when we consider these spaces as subsets of a Hilbert cube then there is only one topological type. For imbeddings ...