in order to identify the plant parasitic nematodes of tomato fields in northern khorasan province, 50 soil and root samples were collected during 2009 - 2010. nematodes were extracted by combined sieving and centrifugal-flotation method and processed to be transferred to glycerin. after preparing microscope slides, the morphological and morphometrical characters of the nematodes were studied us...

Springer’s theory of regular elements in complex reflection groups is generalized to arbitrary fields. Consequences for the cyclic sieving phenomenon in combinatorics are discussed.

Electropolymerized conjugated microporous polymer (CMP) membranes enable molecular sieving in organic solvents under extreme conditions.