In soils under wheat cultivation, soil aggregates stability is increased and destructive effects of erosion decreased, due to organic matters (OM) application. This trail was conducted in Shavoor agriculture research station to determine of mean weight diameter (MWD) under different organic matter sources and amounts in Khuzestan province (at south west of Iran) via a split plot experiment base...

Diameter perfect codes form a natural generalization for codes. They are based on the code-anticode bound which generalizes sphere-packing bound. The was proved by Delsarte distance-regular graphs and it holds some other metrics too. In this paper we prove non-binary constant-weight with Hamming metric characterize diameter maximum size anticodes these We distinguish between six families of fou...

in 2007 and 2008, the influence of pollen source on the shell and kernel traits of resulting seeds and on fruit set was examined to evaluate the potential for xenia or metaxenia in persian walnut. pistillate flowers of ‘jamal’, ‘chandler’, ‘hartley’ and ‘pedro’ were crossed with the pollen of ‘serr’, ‘z60’ and ‘damavand’. the pistillate flowers on each female parent were covered about one week ...

this study was conducted to investigate the effects of age and sex on the fleece characteristics of 40 iranian indigenous khorasan goats. goats were divided into two different sex and age (kids and adults) groups. fiber characteristics under study were: fleece weight, fiber length, lock length, fiber diameter, coefficient of fiber diameter, breaking load, resistance, elongation, hair percentage...

in order to evaluation of squash (cucurbita pepo) seed yield per fruit and its relations with other characteristics of fruit include: length, diameter, length: diameter ratio (fruit shape), flesh thickness, thousand seed weight and fruit weight, an experiment was conducted using 24 accessions of squash as a randomized complete-block design with three replications. morphological traits were eval...

Let G be a simple graph with non-negative edge weights. Determining a minimum weight spanning tree is a fundamental problem that arises in network design and as a subproblem in many combinatorial optimization problems such as vehicle routing. In some applications, it is necessary to restrict the diameter of the spanning tree and thus one is interested in the problem : Find, in a given weighted ...

From cosets of binary Hamming codes we construct diameter perfect constantweight ternary codes with weight n − 1 (where n is the code length) and distances 3 and 5. The class of distance 5 codes has parameters unknown before.