We give an example of a compact space X whose iterated continuous function spaces Cp(X), CpCp(X), . . . are Lindelöf, but X is not a Corson compactum. This solves a problem of Gul’ko (Problem 1052 in [11]). We also provide a theorem concerning the Lindelöf property in the function spaces Cp(X) on compact scattered spaces with the ω1th derived set empty, improving some earlier results of Pol [12...

Long-term, high-resolution measurements of environmental variability are sparse in the High Arctic. In absence such data, we turn to proxies recorded layered skeletons long-lived crustose coralline algae Clathromorphum compactum. Annual growth banding this alga is dependent on several factors that include temperature, light availability, nutrients, salinity, and calcium carbonate saturation sta...

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...

Consider a measurable space with an atomless finite vector measure. This measure defines a mapping of the σ-field into an Euclidean space. According to the Lyapunov convexity theorem, the range of this mapping is a convex compactum. Similar ranges are also defined for measurable subsets of the space. Two subsets with the same vector measure may have different ranges. We investigate the question...

Alsberg & Black (1913) first isolated and named mycophenolic acid, C17H200,6, from culture filtrates of PeniciUlium stoloniferum Thom. The acid was next reported by Clutterbuck, Oxford, Raistrick & Smith (1932) as a metabolic product of twelve species or strains in the P. brevi-compactum series, a series to which P. stoloniferum belongs. Clutterbuck & Raistrick (1933), as the result ofan extens...