1. Congruence lattices. G. Birkhoff and O. Frink noted that the congruence lattice Con04) of an algebra A (with operations of finite rank) is algebraic or compactly generated. The celebrated Grätzer-Schmidt theorem states that, conversely, every algebraic lattice is isomorphic to Con(A) for some algebra A. The importance of this is obvious, for it shows that unless something more is known about...

abstract nymphal survival and crawlers movement of bemisia tabaci (homoptera: aleyrodidae) on different varieties of cotton, gossypium hirsutum, was studied on 5 different varieties including, varamin, kucker-312, bulgar-557, sahel-80, and native (red leaf/red boll) at 24±2 °c, 65±5% rh, 16:8 (l: d) photoperiod in the greenhouse condition. crawlers' movement was significantly different on the v...

Wheat (Triticum aestivum L.) variety mixtures represent a relatively unexplored avenue for maintaining yield and improving flour quality. A field experiment was conducted to examine the responses of three spring wheat varieties in pure variety and in variety mixtures under continuous cropping in Northeast China. Three modern spring wheat varieties, along with a three-variety mixture and a t...

O ensaio visual do Dossiê Deleuze: Modos de Usar apresenta pinturas da artista e filósofa francês Anne Sauvagnargues que compõem seu Carnet Japon avril 2015, uma coleção imagens capturadas em cotidiano deslocamentos no transporte público. inicia com apresentação Lilian Hack. Japan April 2015 notebookAbstract: The essay which is part of the Modes Use features paintings by French artist and philo...

abstract more than %90 of natural silk in world is produced by means of mulberry silkworm (bombyx mori l.). therefore, it is important that we recognize and collect mulberry varieties which have high quantity and quality leaf performance. for this purpose, an experiment was conducted with five mulberry varieties (kenmochi, kairyonase, ichinose, shinichinose and local varieties) during two seaso...

Background: Physical characteristics of crops play an important role in designing the required machinery and apparatus for planting, harvesting, transport, processing and also storing. The aim of this study was to determine physical characteristics of some native rice varieties cultivated in northern Iran, namely Gerde, Shafagh, Tarom-e-Hashemi, Shiroodi and Keshvari. Methods: Some geometrical...

the effects of water deficit on grain yield, yield components and the physiological char-acteristics of barley (hordeum vulgare l.) varieties were studied in a split plot design dur-ing the 1999-2000 growing season in karaj, iran. five irrigation levels [0, 25, 50, 75, and 100% crop water requirements (cwr)] and six barley varieties karoon kavir , rei-hani(drought tolerant), torkman , c-74-9 (i...