avicennia marina (avicenniaceae) is a species of mangrove tree used for treatment of small pox lesions in persian folk medicine. the antiviral activity of methanol, ethanol, water, chloroform and n-hexane extracts was evaluated against hiv-1 and hsv. methanol extract had the highest antiviral activity and the most polar fraction of this extract (fraction d) inhibited hsv with ti and si values o...

The articles [8], [5], [9], [1], [10], [11], [3], [2], [7], [4], and [6] provide the notation and terminology for this paper. We consider tree construction structures as extensions of 1-sorted structure as systems 〈 a carrier, rules 〉, where the carrier is a set and the rules constitute a relation between the carrier and the carrier∗. Let us note that there exists a tree construction structure ...

This paper proposes a new coding scheme and an algorithm to determine ancestordescendant relationship among nodes in a tree without tree traversal. Each node in a tree is assigned a unique binary code. The algorithm and the binary coding approach were tested with trees of different heights and widths. The algorithm is of O(1) complexity versus O(d) for tree traversal, where d is the depth of th...

We derive a sufficient condition for a sparse graph G on n vertices to contain a copy of a tree T of maximum degree at most d on (1 − )n vertices, in terms of the expansion properties of G. As a result we show that for fixed d ≥ 2 and 0 < < 1, there exists a constant c = c(d, ) such that a random graph G(n, c/n) contains almost surely a copy of every tree T on (1− )n vertices with maximum degre...

PURPOSE To determine the efficacy of the M1-selective muscarinic antagonist, pirenzepine, in preventing experimentally induced myopia in a mammalian model, the tree shrew. METHODS Tree shrews were monocularly deprived (MD) using translucent goggles or negative lenses for a period of 12 days. In two of the MD groups, tree shrews received daily subconjunctival administration of either pirenzepi...