In this paper, Kekule structures of benzenoid chains are considered. It has been shown that the coefficients of a B_n (x) Morgan-Voyce polynomial equal to the number of k-matchings (m(G,k)) of a path graph which has N=2n+1 points. Furtermore, two relations are obtained between regularly zig-zag nonbranched catacondensed benzenid chains and Morgan-Voyce polynomials and between regularly zig-zag ...

Two new species, Neoseiulus elisiensis n. sp. and Neoseiulus neomarginatus n. sp., are described from Greece. Neoseiulus leucophaeus (Athias-Henriot) is re-described and illustrated based on specimens collected on Thymelaea hirsuta (L.) Endl. A key to all species of the genus Neoseiulus Hughes reported from Greece is provided.

What’s the best thing about HHMI funding? There's lots of it. The annual HHMI budget was $330 million in 1994, of which about 80 % was spent on the 227 HHMI investigators. For those who need lots of money for mice or equipment, HHMI funding can be the answer to a prayer. And HHMI, unlike most other funding bodies, does not discourage long-term, risky research or projects with little obvious rel...

during the visits of common reed [phragmites australis (cav.) trin. ex steud] in different locations of west azerbaijan province during 2015–16, symptoms of fungal infections was frequently observed. among the isolated and studied fungi, deightoniella arundinacea (corda) s. hughes was commonly observed. based on available literatures, this species was found new to mycobiota of iran.