– [root property] The minimum element, referred to as the root, of T is f(X1, . . . , Xn), where X1, . . . , Xn are distinct variables. – [leaves property] The maximal elements, referred to as the leaves, of T are all and only (variants of) the left hand sides of the rules defining f . Non-maximal elements of T are referred to as branches. – [parent property] If π is a pattern of T different fr...

A new method for the visualization of huge hierarchical data structures is presented. The method is based on the observation that we can easily see the branches, leaves, and their arrangement in a botanical tree, despite of the large number of elements. The strand model of Holton is used to convert an abstract tree into a geometric model. Nonleaf nodes are mapped to branches and child nodes to ...

One can check that every tree which is finite is also finite-order. The following propositions are true: (1) For every decorated tree t holds t ε = t. (2) For every tree t and for all finite sequences p, q of elements of such that p q ∈ t holds t (p q) = t p q. (3) Let t be a decorated tree and let p, q be finite sequences of elements of . If p q ∈ dom t, then t (p q) = t p q. A decorated tree ...

Objective: Scutellaria luteo-caerulea Bornm. & Snit. is one of the species of genus Scutellaria, within the family of the Lamiaceae, that is used for immune system stimulation and antibacterial effects in traditional medicine in Iran. The aims of this study were to analyze essential oils and mineral element contents of leaves of  S. luteo-caerulea in flowering stage of development. Materials an...

scion-rootstock combination and level of salinity affect growth characteristics and concentration of nutrition elements of almond leaves and roots. in this research, effects of salinity stress were investigated on growth characteristics and nutrient concentration of almond leaves and roots by completely randomized design (crd), with two factors, genotype and water salinity with three replicatio...

background and objectives: the present study was conducted to evaluate the presence of biochemical contents and trace elements, and detect phytochemicals in the edible part extracts of asparagus officinalis dc and chlorophytum comosum linn by hptlc. materials and methods: the biochemical contents and trace elements were determined by different biochemical methods, and trace elements’ presence w...

A function on an algebra is congruence preserving if, for any congruence, it maps pairs of congruent elements onto elements. We show that the binary trees whose leaves are labeled by letters alphabet containing at least three letters, a if and only polynomial.

Alternative re-usable substrate containers for fructification are required because plastic bags currently used suffocate soil biotic entities. They are a cost for mushroom farmers who purchase plastic bags in every oyster mushroom crop and they are left as non-biodegradable wastes, which are disposed of to the environment after every oyster mushroom cropping. On the other hand, oyster mushroom ...

Extraordinary importance of Date-Palm, Phoenix dactylifera especially ‘Piarom’ variety and also undeniable effect of nitrogen and phosphorus on yield and quality of this product, caused this research to be accomplished. The research was performed during two years on 72 (4*3*3*2=72 trees) fruitful, 12 years old trees in Hormozgan province. Treatments were consisted of four levels of nitrogen (0,...

SURE (sugar responsive) is a cis element in plant sugar signaling. The SURE element was reported first for potato, in which it confers sugar responsiveness to the patatin promoter. A SURE binding transcription factor has not been isolated. We have isolated a transcription factor cDNA from barley and purified the corresponding protein. The transcription factor, SUSIBA2 (sugar signaling in barley...