Surface mechanical attrition treatment (SMAT) is an effective method to accelerate the nitriding process of metallic materials. In this work, a novel technique named surface nano-alloying (SNA) was developed on the basis of surface mechanical attrition treatment, which was employed as a pretreatment for the nitriding of low carbon steel materials. The microstructure and surface properties of tr...

The microbiological methods used were those described previously by Hier and Bergeim (1, 2) and by Hier et ab. (3), except that threonine was determined with Streptococcus jaecalis according to Stokes et al. (4), since more consistent results were obtained with this organism than with Lactobacillus arabinosus.as previously used. However, we have found no difference in values when Streptococcus ...

Schema matching aims to identify the correspondences among attributes of database schemas. It is frequently considered as most challenging and decisive stage existing in many contemporary web semantics systems. Low-quality algorithmic matchers fail provide improvement while manually annotation consumes extensive human efforts. Further complications arise from data privacy certain domains such h...

This paper presents a combination of the surface mechanical attrition treatment (SMAT) and the corolling process performed at 550 °C. This duplex method leads to the formation of a semi-massive multilayer structure of alternating nanocrystalline layers, transition layers and coarse grain layers. Transmission electron microscope observations correlated with nanoindentation hardness measurements ...

LpGPAT was obtained from L. pensylvanicum using RT-PCR and rapid amplification of cDNA ends. The cloned full-length cDNA was 1544 bp; it encoded 410 amino acids and had a molecular size of 46 KDa. The nucleic acid sequence analysis showed that it shared high homology with other known GPATs. SMAT result suggests that there is a PlsC that exists in 176-322 amino acid sequence of LpGAPT; it means ...

The effect of gradient microstructure generated by ultrasonic surface mechanical attrition treatment (SMAT) on the fatigue performance an austenitic stainless steel has been evaluated in context localized and general plasticity comparing two load ratios: fully reversed tension-compression (TC) RTC = -1 tension-tension (TT) RTT +0.1, respectively. After identical SMAT processing conditions, limi...

Driver inattention is one of the major causes of traffic crashes, claiming thousands of lives every year. Face tracking is one of the first stages in safety systems that relay on computer vision to detect inattention. This paper describes an active model with a robust texture model built on-line. The model uses one camera and it is able to operate without active illumination. The texture model ...