Columns are the key load-bearing elements in frame structures and exterior columns are probably the most vulnerable structural components to terrorist attacks. Column failure is normally the primary cause of progressive failure in frame structures. A high-fidelity physicsbased computer program, LS-DYNA was utilized in this study to provide numerical simulations of the dynamic responses and resi...

The article deals with assessment of the suitability using a laser triangulation sensor to measure displacement in vertical axis measuring microscope. Data obtained from calibration are used for determination range which smallest measurement error occurs. Linear approximation inverse function is applied correct systematic errors reduced sensor. Residual corrected output can be uncertainty calcu...

lateral and anterior displacements of mandible may cause malocclusion. the aim of this study was to determine the prevalence of these displacements in a population of 597 childrens age 12 in mashhad secondary schools. displacment of mandible was shown to be in 11.8 percent of the population (6.2 percent anterior and 5.6 percent lateral displacement).anterior displacement of mandible was diagnos...

The primary seismic force-resisting system (SFRS) in middle- to high-rise reinforced concrete (RC) building structures often includes coupled shear walls (CSWs) and single (SSWs). These are designed transfer lateral forces the foundation dissipate energy through development of plastic hinges. latter lead residual displacement these structural components. On other hand, self-centering systems en...

Whenever experimentally derived (Test) modal vectors are compared to the analytically obtained (Analysis) modal vectors, for purpose of model verification or model updating, a transformation matrix must be utilized to expand/reduce the degrees offreedom, DOF, so that the spatial dimension of the two sets of modal vectors is the same. The measured set of DOF seldom match the analytical set of DO...

Understanding and predicting the behaviour of bonded joints under different loading conditions is certainly an aspect primary importance. Although numerous experimental studies have been carried out over last few decades, shear cyclic has not investigated in detail. To fill this gap, extensive numerical program double lap out. The were tested static to evaluate compare influence external forces...

STUDY DESIGN Prospective cohort study. OBJECTIVE To describe the naturally occurring magnetic resonance imaging (MRI) findings after successful microsurgical removal of lumbar disc herniation with repeated MRI examinations. SUMMARY OF BACKGROUND DATA The interpretation of MRI after spinal surgery may be particularly challenging and image findings do not always correlate to clinical findings...

PURPOSE A pseudo forward ray-tracing (PFRT) algorithm is developed to evaluate surface reconstruction in corneal topography. The method can be applied to topographers where one-to-one correspondence between mire and image points can be established. METHODS The PFRT algorithm was applied on a corneal topographer designed and constructed at the VU University Medical Center, Amsterdam, The Nethe...

1. The preparation of isolated chromosomes from liver, kidney, and pancreas has been described. 2. It has been shown that there is no gross cytoplasmic contamination in these preparations. 3. In a microscopic study of isolated chromosomes the same chromosomes have been found in different tissues of the same organism. Since individuality is one of the main characteristics of chromosomes, there c...

This paper describes a laterally deflecting micromachined device that offers high sensitivity and wide dynamic range to electronically monitor the thermal expansion coefficient, tensile and compressive residual strain and Young’s modulus of microstructural materials, as well as the temperature dependence of these properties. The device uses sidewall capacitance between interdigitated tines to s...