Studies of hybrid zones have revealed an array of evolutionary outcomes, yet the underlying structure is typically characterized as one of three types: a hybrid zone, a hybrid swarm or a hybrid taxon. Our primary objective was to determine which of these three structures best characterizes a zone of hybridization between two divergent lineages of mule deer (Odocoileus hemionus), mule deer and b...

The issue of tracking residual stresses initiation in welding copper under various affected conditions is essential increasing safety through improving the quality particular, nuclear industry. This study investigated behavior welded numerically and experimentally contact-heating compression test with constant clamping force. scanning contact potentiometry (SCP) method was used to track develop...

Sequence alignment of proteins and nucleic acids is a routine task in bioinformatics. Although the comparison of complete peptides, genes or genomes can be undertaken with a great variety of tools, the alignment of short DNA sequences and motifs entails pitfalls that have not been fully addressed yet. Here we confront the structural superposition of transcription factors with the sequence align...

This study highlights recent observations in tennis which have revealed that the head position and gaze direction during the hitting process distinguished significantly elite players (with significant results in Grand Slam tournaments) from other top players: Elite players spent more time tracking the ball and fix the contact zone (or hitting zone) throughout the hitting action. These character...

the built up layer thickness in secondary deformation zone is one of the important parameters in metal cutting process. the built up layer (bul) is formed in second deformation zone near the tool-chip interface in the back of the chip. this parameter influences the tool life and machined surface quality. this bul should not be confused with the built up edge (bue). the deformation of the bul in...

Recent knowledge about biological joint morphogenesis opens new perspectives in mechanics to automate contact surface design. The present work evaluates the feasibility of a generative design method inspired by process develop surfaces. A finite element model reported literature was implemented. This adapted and implemented for mechanical applications. results show that bioinspired shaping adds...

In the present paper, the problem of low-velocity impact of an elastic sphere against a viscoelastic Timoshenko-type beam is studied considering the extension of its middle surface. The viscoelastic features of the beam out of the contact domain are governed by the standard linear solid model with derivatives of integer order, while within the contact domain the fractional derivative standard l...

This paper presents finite element analysis of the strength of roadheaher conical picks. Failure forms of conical picks are investigated, and the FE model of conical pick is established which is based on ANSYS. The static analysis is carried out according to the load calculated by empirical formula and the deformation map and stress distribution is obtained. The results show that the maximum st...