The crude ethyl acetate extract of the leaves of Cornus macrophylla showed antibacterial activity against Pseudomonas aeruginosa, a leading cause of illness in immunocompromised individuals. Bioactivity-guided separation led to the isolation of kaempferol 3-O-α-L-rhamnopyranoside (afzelin). The structure was determined based on evaluation of its spectroscopic (UV, MS, and NMR) data. The minimum...

A new iridoid glucoside, cornusoside A (1), and four new natural product iridoid aglycones, cornolactones A-D (2-5), together with 10 known compounds were isolated from the leaves of Cornus florida. The structures of compounds 1-5 were established by interpretation of their spectroscopic data. Cornolactone B (3) is the first natural cis-fused tricyclic dilactone iridoid containing both a five- ...

For a polytope in the [0; 1] cube, Eisenbrand and Schulz showed recently that the maximum Chv atal rank is bounded above by O(n2logn) and bounded below by (1 + )n for some > 0. Chv atal cuts are equivalent to Gomory fractional cuts, which are themselves dominated by Gomory mixed integer cuts. What do these upper and lower bounds become when the rank is de ned relative to Gomory mixed integer cu...

The induction of stem frost hardiness by low temperature, water stress, short days, and their combinations in 2- and 4-month-old growing dogwoods (Cornus stolonifera) were investigated. When plants were subjected to more than one factor, the increased hardiness was the sum of the effects of the individual factors involved. No interactions among these factors on hardiness were observed during a ...

Professor Cornel Tiberiu Opris was the founder and Chair of the Clinic and University Department of Oral and Maxillofacial Surgery in Cluj, after the Education Reform of 1948. The article illustrates how the founder of these institutions led a valiant struggle for obtaining and arranging a location for the newly established Faculty of Dentistry, within the Institute of Medicine and Pharmacy. Pr...

Cleome pallida is the name to be used for Dipterygium glaucum, widespread in desert habitats of northeastern Africa and southwestern Asia, when this species treated as a Cleome. A comprehensive synonymy provided all names are typified. The record Bunias orientalis made by Forsskål Yemen shown based on misidentified material C. pallida. new combination cornus-africani endemic Somalia that was fi...

Granit and Helme (1) found that the electroretinogram (ERG) of the darkadapted frog's eye was effected by a constant electric current running across the retina (polarizing current). They reported that both band d-waves of ERG were enhanced by the current flowing through the retina from the outside into the inside of the bulb (this direction of the current was called "inside cathode"), but they ...