In this paper, an equivariant version of the classical Dold-Thom theorem is proved. Let G be a finite group, X a G-space, and k a covariant coefficient system on G. Then a topological abelian group GX ⊗GF k is constructed by the coend construction. For a G-CW complex X, it is proved that there is a natural isomorphism πi(GX ⊗GF k) ∼= H G i (X; k), where the right hand side is the Bredon equivar...

Essential oils extracted from flower petals of palmarosa (Cymbopogon martini), evening primrose (Primula rosea), lavender (Lavandula angustifolia) and tuberose (Polianthus tuberosa) were tested for their antibacterial activities against gram-positive and gram-negative bacteria. Different concentrations of each essential oil ranging from 10-100% were tested. Both gram-positive and gram-negative ...

Sir,?I noticed in the " British Medical Journal" of the 28th September last, page 719, a communication from Mr. Oldacres, M.B.C.S., that by handling the plant named Primula obconica an obstinate rash is produced, attended with dyspeptic symptoms. 1 beg to bring to your notice that there are two plants in this part of the country, very common in shady places, known as the Tragia eannaMna and Tra...

Primula veris, a well-known pharmaceutical plant, is a long-lived perennial protected by law in Poland, so its rhizomes and roots can be collected as pharmaceutical stock only from cultivation. Genetic variation of three natural P. veris populations numbering 500–1200 individuals and of three cultivated populations derived from seeds collected from natural sites was investigated in respect of t...