Abstract Strength is an important characteristic of material mechanical properties. Based on the microcrack model and considering internal friction effect between crack surfaces, uniaxial tensile compressive strength theoretical which can reflect anisotropy materials derived established by using initiation criteria maximum circumferential stress strain, coefficient Poisson’s ratio. By introduci...

OBJECTIVE Western blotting (WB; immunoblotting) is a widely used tool for the serodiagnosis of Lyme borreliosis (LB), but so far, no generally accepted criteria for its performance and interpretation have been established in China. The present study was designed to determine the criteria for standardized Western blot for the predominant species of Borrelia burgdorferi sensu lato in China, in wh...

with the complexity and amount of information in a wide variety of comparative performance reports in poultry production, making a decision is difficult. this problem is overcomed only when all data can be put into a common unit. for this purpose, five different decision making analysis approaches including  maximin, equally likely, weighted average, ordered weighted averages and technique for ...

Background Current morphologic left ventricular (LV) non-compaction (LVNC) criteria seem to be still insufficient. The prevalence of borderline degree of LV hypertrabeculation is far more frequent than initially expected. LV twist and strain values are proposed as potential new functional parameters supplementing the classic morphologic LVNC criteria. The aim of this study was to assess diagnos...

It is well known that for any sort of evolutionary search we must represent the problem solution in a suitable manner since the choice of representation has a large impact on the type and efficiency of the evolutionary search procedure applied. Usually in evolutionary design applications either bit strings or real number parameters are used to encode the problem. However, during the initial des...

The need for compatibility between degrees of freedom of various elements is a major problem encountered in practice during the modeling of complex structures; the problem is generally solved by an additional rotational degree of freedom [1-3]. This present paper investigates possible improvements to the performances of strain based cylindrical shell finite element [4] by introducing an additio...

Failure of rock mass in deep underground excavations could be attributed to a broad range performance malfunction, from plastic yielding rock, generation macro cracks on the boundary excavation, gravity driven rockfalls or even complete stress-induced collapse. The failure criteria determine stress level (or strain level) at which loses its load-carrying strain-carrying) capacity. Determination...

The evolution of a Gaussian vortex subject to a weak-external-random nfold multipolar strain field is examined using fully nonlinear simulations. The simulations show that at large Reynolds numbers, fine scale steps form at the periphery of the vortex, before merging, generally leaving one large step, which acts as a barrier between the vorticity within the coherent core and the surrounding, we...

This paper discusses FEM-based simulations of soft bodies in terms of speed and robustness. To be physically plausible, three fundamental laws must be respected: rotational invariance, Newton’s law and Euler’s law. We show that precomputed strain-displacement matrices generate nonphysical torques which can lead to visual artifacts. We then derive the fastest FEM-based method meeting our criteri...