background:the present study aims to present a new method to trace narcotics in the solution extracted from dried urine stain left on cotton fabric. material and methods:narcotic substance was traced in the 50 samples through two methods. in the first method, samples were directly examined through thin layer chromatography (tlc). in the second method, a piece of cotton fabric was soaked in a be...

conclusions the active compound may be a flavonoid. existence of flavonoids in tested fractions could be the important medicinal properties of m. communis leaves. further work is required to evaluate the exact effect of these biological compounds on animal model or human volunteers. results ethyl acetate and total methanolic extracts respectively had the best antifungal effects against three te...

the scope of this research is to investigate the effect of geometrical and physical input parameters in crustal viscoelastic deformation models. to do this analysis viscoelastic model of wang et al., 2006 is used. the increasing quality of data on time-dependent deformation of the earth's surface can be used to extract more details on the spatial and temporal development of earthquake-rela...

Finite element parametric analysis is performed on a cracked bi-material bar subjected to pure bending in order investigate the fatigue behaviour of short crack thin protective layer laser-cladded steel substrate. Elastic properties surface are chosen with regard real combinations materials when bronze, nickel or cobalt alloys applied as layers improve basic substrate and influence their mismat...

Abstract Elastic constants and sound velocities of nm order thin films are essential for designing acoustic filters. However, it is difficult to measure them dielectric films. In this study, we use a three-layer structure where nano-thin film sandwiched between thicker metallic the longitudinal elastic constant film. We propose an efficiency function estimate optimal thicknesses components. Pt/...

this research deals with axial and oblique impact crash tests on simple and hybrid composite tubes. axial and oblique impact tests have been generated on simple and hybrid composite tubes with one, two and three layers. a drop test rig was used to conduct the experiments. furthermore, in order to gain more detailed knowledge about the crash process, finite element simulations of the experiments...

We consider a reduced Landau-de Gennes energy functional which describes a chiral smectic liquid crystal with large elastic coefficients. We prove that, according to this model, chiral smectics exhibit behaviour which is similar to surface superconductivity: a thin layer of smectics near the boundary, and cholesterics in the bulk of the material. We obtain this behaviour for a wide region in th...

Interaction of surface/internal water waves with a floating platform is discussed with nonlinearity of fluid motion and flexibility of oscillating structure. The set of governing equations based on a variational principle is applied to a oneor two-layer fluid interacting with a horizontally very large and elastic thin plate floating on the water surface. Calculation results of surface displacem...

To elucidate the role of the internal elastic lamina in the development of cerebral aneurysm, the bifurcation of the anterior cerebral artery and olfactory artery was histologically studied in control and experimental rats treated with unilateral carotid ligation and renal hypertension. Various stages of aneurysm formation were compared, and it was found that early aneurysmal changes were alway...