there are considerable efforts to identify naturally occurring substances as new drugs in cancer therapy. many components of medicinal plants have been identified that possess substantial anticancerous properties. this prompted us to investigate the effect of scrophularia striata (an iranian species belonging to the scrophulariace family) extract on the growth of astrocyte cancer cell line (132...

in this paper, the problem of lot sizing, scheduling and delivery of several items in a two-stage supply chain over a finite planning horizon is studied. single supplier via a flexible flow line production system (ffl) produces several items and delivers them directly to an assembly facility. based on basic period (bp) strategy, a new mixed zero-one nonlinear programming model has been develope...

in this paper the factor of safety (fs) and critical line-segments slip surface obtained by the alternating variable local gradient (avlg) optimization method was presented as a new topic in 2d. results revealed that the percentage of reduction in the fs obtained by switching from a circular shape to line segments was higher with the avlg method than other methods. the 2d-avlg optimization meth...

analyzing the vortex-induced vibration of a slender marine structure withlength to diameter ratio up to 200 is the objective of this study. this slender is free to move in both in-line and cross flow directions and immersed completely in water. three different types of shear currents pass on it and cause to vibrate slender in different forms. nowadays, these vibrations are very important for de...

As one of the fundamental problems in fluid mechanics, flow-induced vibration a flexible cylinder helps shed light on various complex fluid–structure interaction phenomena, such as coupling effect cross-flow and in-line motions relationship between external forces vortical wake patterns. This paper devised non-uniform in-flow condition (partially uniform flow partially still water) for cylinder...

The paper compares the IDEF0 [1], (sometimes referred to as SADT) and DSM (Design Structure Matrix) [2, 3] modelling techniques. They both serve the purpose of modelling information flows. The aim of the paper is to identify positive and negative aspects of the different modelling techniques, thereby suggesting what kind of problems the different techniques are best suited for and how the techn...

The offer of the best machine tool configuration for the specific customer’s need is a decisive factor to compete in the machine tool sector. Actually the offer is organized by the manufacturer mostly on the basis of his own experience and requires a considerable amount of time and money. This effort does not always lead to tangible results, since few offers actually lead to purchases. So there...