Ductile fracture through growth and coalescence of intergranular cavities is a failure mode observed experimentally in many metallic alloys used industrial applications. Simulation this process polycrystalline aggregates requires modeling the plastic yielding porous boundaries. However, classical yield criteria for materials such as Gurson–Tvergaard–Needleman model its current extensions cannot...

Crack growth along an interface joining an elastic-plastic solid to a solid that does not yield plastically is studied numerically, accounting for mixed mode loading under conditions of small scale yielding. The fracture process is represented in terms of a cohesive zone model, for which the work of separation per unit area and the peak stress required for separation are basic parameters; but w...

A bstract The structure of the Heisenberg evolution operators plays a key role in explaining diverse processes quantum many-body systems. In this paper, we discuss new universal feature operator evolution: an can develop void during its evolution, where nontrivial parts become separated by region identity operators. Such are present both integrable and chaotic systems, required unitarity. We sh...

In this work, we have brought to light the effect of material orientation on void growth. For that purpose, performed finite element calculations using a cubic unit-cell model with spherical at its center and subjected periodic boundary conditions. The behavior is described an elastic isotropic, plastic orthotropic constitutive yielding defined by Yld2004-18p criterion (Barlat et al., 2005). We...

The compensatory growth, proximate composition and amino acid contents changes of young yellow catfish (Pelteobagrus fulvidraco R.) (1.63-1.69 g) had been investigated using a 45-day cyclic feed deprivation and re-feeding experiment. The control group (S0) was fed daily with live tubificid worms (Limnodrilus hoffmeisteri), while the S1/4, S1/2, and S1/1 groups cyclically experienced one-day of ...

Corresponding to the recent observational claims that we are in a local void (an underdense region) on scales of 200 − 300 Mpc, the magnitude-redshift relation in a cosmological model with a local void is investigated. It is already evident that the accelerating behavior of high-z supernovae can be explained in this model, because the local void plays a role similar to the positive cosmological...

The compensatory growth, proximate composition and amino acid contents changes of young yellow catfish (Pelteobagrus fulvidraco R.) (1.63-1.69 g) had been investigated using a 45-day cyclic feed deprivation and re-feeding experiment. The control group (S0) was fed daily with live tubificid worms (Limnodrilus hoffmeisteri), while the S1/4, S1/2, and S1/1 groups cyclically experienced one-day of ...

Biofilms are communities of sessile microorganisms attached to a surface and imbedded in a matrix of extracellular polysaccharide substances. These communities can be found in diverse aquatic environments, such as in industrial pipes and in humans. By forming microcolony structures, which are highly resistant to adverse physical conditions as well as antimicrobial agents, biofilms are very prob...