tuberose (polianthes tuberosa l.) is one of the most important bulbous ornamental crops of tropical and subtropical areas. the objective of the present study was to determine the interaction effects of salinity and irrigation intervals on growth and flowering of two important commercial cultivars (‘mahallati’ and ‘dezfuli’) of tuberose (polianthes tuberosa l.). irrigation treatments consisted o...

Manin and Schechtman defined the discriminantal arrangement of a generic hyperplane arrangement as a generalization of the braid arrangement. This paper shows their construction is dual to the fiber zonotope construction of Billera and Sturmfels, and thus makes sense even when the base arrangement is not generic. The hyperplanes, face lattices and intersection lattices of discriminantal arrange...

Small groups which form for teaching and learning process would have substantial outcomes if manage properly. Evidence suggests that environment and seating arrangement of the learners would have considerable impacts on the success of a facilitator to properly use from the dynamics of the group. The aim of the present article is therefore to discuss the appropriate environment and seating arran...

Assessing the tolerance of medicinal plants is important for planting them in drought areas. Arginine is a growth regulator and its role in plants’ tolerance to environmental stresses such as drought has been investigated. To evaluate the protective effects of arginine against osmotic stress induced by polyethylene glycol in ajwain (Trachyspermum ammi) seedlings, an experiment was conducted as ...

Optimizing interconnection networks is a prime object in switching schemes. In this work the authors present a novel approach for obtaining a required channel arrangement in a multi-stage interconnection network, using a new concept – a fundamental arrangement. The fundamental arrangement is an initial N-1 stage switch arrangement that allows obtaining any required output channel arrangement gi...

ATP-gated ionotropic receptors (P2X receptors) are distributed widely in the nervous system. For example, a hetero-oligomeric receptor containing both P2X2 and P2X3 subunits is involved in primary afferent sensation. Each subunit has two membrane-spanning domains. We have used disulfide bond formation between engineered cysteines to demonstrate close proximity between the outer ends of the firs...

This study investigated the relationship between classroom seating arrangements and the question-asking of fourth-graders. Data were collected during 53 lessons spread over 8 weeks. Children were assigned to sit in a semicircle and then in a row-and-column seating arrangement for 2 weeks each. This rotation was repeated. Both children’s questions and the teacher’s verbal reactions were recorded...

from long time ago the shortage of finance in business practices was one of the striking problems for traders and thus there have always been endeavors to find a solution to it. one of the ways put forward was using the stocks stored in warehouses as security for loans. taking advantage of a descriptive method, this paper describes field-warehousing as a means of raising cash funds and the regu...