formability of automotive friction stir welded twb (tailor welded blank) sheets isnumerically investigated in biaxial stretching based on hemispherical dome stretch (hds) test infour automotive sheets of aluminum alloy 6111-t4, 5083-h18, 5083-o and dp590 steel, havingdifferent thicknesses. the effects of the weld zone modeling and the thickness ratio on formabilityare evaluated. in order to car...

Objectives. The aim of this study was to assess the influence of resistance to sliding on expression of superelastic properties of NiTi wires. Methods and Materials. A three-point bending test was performed for 0.014 NiTi wire engaged in self-ligating (Damon, SmartClip, In-Ovation) and conventional brackets (Victory) ligated with regular and reduced friction modules (Slide). The wire was deflec...

Ti-TiC-TiC/DLC gradient nano-composite films have been prepared on the NiTi substrates by the technique of plasma immersion ion implantation and deposition (PIIID) combining with plasmaenhanced chemical vapor deposition (PECVD). The influence of C2H2 flow rate ranging from 30sccm to 50sccm on the chemical structure, microstructure, mechanical properties and corrosion resistance of resulting thi...

The adhesion and friction force properties between a tenfold Al‐Ni‐Co decagonal quasicrystal and a titanium nitride (TiN)-coated tip were investigated using an atomic force microscope in ultrahigh vacuum. To suppress the strong chemical adhesion found in the clean quasicrystal surfaces, the sample was exposed to ethylene that formed a protective passivating layer. We show that the deformation m...

Converging approximation of a regular curve by polygonal lines in the uniform norm does not imply convergence discrete differentials to their smooth counterpart. In this paper, we provide constructive approach that, given converging polygon sequence and an its distance objective curve, provides another polygons for which occurs as well. This is based on notion local scale uses multi-resolution ...

In vitro dose-response curves for anticancer agents are useful for predicting the clinical response to chemotherapy, and models to capture the time-dependency of dose-response curves are necessary for potential clinical extrapolation. Usually, the modified Hill model is used (see Levasseur et al., Cancer Res., 58: 5749-5761, 1998), although this model is neither mechanistic nor predictive for u...

Oxygen binds to hemoglobin cooperatively, and a correct description of this binding is relevant not only for understanding the mechanisms involved molecular processes but also clinical purposes. Hill’s equation, derived over hundred years ago, still simplest most efficient way perform description. However, in terms accuracy, it inferior Adair´s which contains more parameters. We proposed use mo...

The association of actinomycin D and eleven different deoxyribodinucleotides were studied as model complexes for the interaction of actinomycin D and DNA. All of the deoxyribodinucleotides containing guanine will complex with actinomycin D, and the guanine base has a preferred orientation with respect to the chromophore of actinomycin D. The spectrophotometric binding curve for pdG-dC is sigmoi...

Challenge in the registration of battlefield images in visible and far-infrared bands is the feature inconsistency. We use a contour-based approach and propose robust free-form curve-matching algorithms using the adaptive hill climbing and the iterative closest point algorithm. Both algorithms do not requires explicit curve feature correspondence, are designed to be robust against outliers. The...