the rose sawfly, arge rosae linnaeus, is one of the most destructive pests of rose bushes in the north of iran. nowadays, many attempts have been made to reduce pesticide application by looking for new methods of pest control. a non chemical method for controlling insect pests including a. rosae can be achieved by using genetically engineered plants expressing carbohydrase inhibitors. therefore...

α-1,3-Glucan is present as the outermost layer of the cell wall in the pathogenic yeastlike (Y) form of Paracoccidioides brasiliensis. Based on experimental evidence, this polysaccharide has been proposed as a fungal virulence factor. To degrade α-1,3-glucan and allow remodeling of the cell wall, α-1,3-glucanase is required. Therefore, the study of this enzyme, its encoding gene, and regulatory...

We consider the problem of testing graph expansion in the bounded degree model. We give a property tester that given a graph with degree bound d, an expansion bound α, and a parameter ε > 0, accepts the graph with high probability if its expansion is more than α, and rejects it with high probability if it is ε-far from any graph (with degree bound 2d) with expansion Ω(α). The algorithm runs in ...

The volatile constituents from roots of Valeriana officinalis L. were investigated using GC and GC/MS methods. Valerianae radix samples were obtained from retail pharmacies or cultivated in Estonia. The roots of five V. officinalis samples yielded 0.28–1.16% essential oil in the cut drug, which usually corresponded (four samples) to the European Pharmacopeia standard (0.3%). The basic oil compo...

In this paper, we propose an effective routing strategy on the basis of the so-called nearest neighbor search strategy by introducing a preferential cut-off exponent K. We assume that the handling capacity of one vertex is proportional to its degree when the degree is smaller than K, and is a constantC0 otherwise. It is found that by tuning the parameter α, the scale-free network capacity measu...

In this expository article we revisit the topic of capacity scaling in wireless relay networks from a percolation theory perspective. In particular, following the works of Franceschetti et al [2]., we give an outline of a construction to show that in a large wireless network with interference, it is possible, w.h.p., to sustain a non-zero throughput between any two source-destination pair chose...

The aim of this paper is to analyze Bi-level threshold policy of M/(G1, G2)/1 with single vacation (SV) queue in a fuzzy environment. A mathematical Non linear programming (NLP) method is used to construct the membership function of the system characteristic in which the batch arrival-rate, expected group size, setup time, vacation time, service time for first essential service(FES), service ti...

This paper aims to establish the relationship between two apparent disparate problems: (i) the aggregation of uncertain information modelled by type-1 fuzzy sets via OWA mechanism, and (ii) the computation of the centroid of type-2 fuzzy sets. In order to cut down the computational complexity of the direct approach to performing type-1 OWA operation, the α-level approach to type-1 OWA operators...

This work describes a treatment of glycogen-rich wastes from industrial mussel processing, involving the production of a protein fraction and a medium suitable for the culture of amylolytic microfungi. A strain of Aspergillus oryzae was chosen which allows the simultaneous production of single cell protein and a highly stable amylolytic preparation. The characteristics of the biomass obtained (...