Abstract: This paper describes a shearing interferometer with four diffraction gratings for dividing light waves. It allows us to use an extended white light source. This feature of the interferometer is discussed and demonstrated by experiments. By constructing the interferometer for testing transparent object, phase distribution of the light wave passing through an optical lens is measured wi...

Digital shearograohy has demonstrated great potential in revealing defects in objects especially in detecting delaminations in composite materials. It is gaining more and more acceptance by automotive and aerospace industries in the field of nondestructive testing (NDT) of composite materials. A key optical component used in shearography is a shearing device in which the shearing amount, sheari...

tomato is one of the sensitive fruits to mechanical impacts and physical tensions. the mostmechanical damages arise from handling which results in reducing tomato quality. in this study,impact energy effect has been studied in 3 different levels 0, 0.14 and 0.25 j by a pendulum impactapparatus, on changes of physicochemical properties of tomato, hybrid variety shiva f1, includingripening factor...

Vortex fluidic mediated shearing of supramolecular gels in thin films leads to complete disruption of fluorous bis-urea derived gels. Hydrocarbon analogues however, are only partially disrupted, which emphasizes the resistance of non-fluorous bis-urea gelators towards shear. The gel structures have been studied by combining the thin film shearing with small angle neutron scattering. This techni...

We present a new method for measuring the spectral phase of ultrashort pulses that utilizes spectral shearing interferometry with zero delay. Unlike conventional spectral phase interferometry for direct electric-field reconstruction, which encodes phase as a sensitively calibrated fringe in the spectral domain, two-dimensional spectral shearing interferometry robustly encodes phase along a seco...

We describe a device for automated fragmentation of genomic DNA by hydrodynamic shearing using a filter screen with uniform pores. Human genomic DNA can be fragmented reproducibly to a range of 2000-12,000 bp by using various fluid flow rates and screens with 0.5-10-microm pores. The utilization of disposable screens eliminates sample cross-contamination and the tendency of device clogging, com...

The damage of seeds in grain augers has been divided into shearing and jamming, occurring at the inlet and the casing wall, respectively. The shearing was strongly reduced by a displacement body attached to the screw blade. Measures for the reduction of jamming, partly based on a theoretical approximation, have been summarized. A number of experiments, performed for verification, agreed with th...

Binary Decision Diagram (BDD) has been shown to be applicable in image coding. A technique presented in this paper extends the functionality of BDD in image coding to cover major geometric transformations of image such as translation, rotations, scaling and shearing. By introducing the concept of transition branch, nonuniform and uniform translation of image by a given displacement could be obt...