The forming limit diagrams (FLDs) characterizing the formability of sheet metals are usually obtained by applying proportional loadings. Nevertheless, industrial processes involve strain path changes that can modify limit-strain values. In addition, for strongly anisotropic such as Zn-Cu-Ti zinc alloy, large differences in curves (FLCs) with respect to rolling direction observed. present work, ...

Plasma focus (PF) device belongs to the family of dynamic non-cylindrical Z-pinches. In this device hot dense magnetized plasma is created as a result of a discharge between coaxial electrodes over a surface of isolator in a working gas. If the working gas is deuterium, then DD fusion reactions take place, in the so-called plasma column or plasma pinch, which is created at the end of a central ...

BACKGROUND/AIM Type 1 diabetes is one of the most common chronic diseases in children. The aim of the study was to evaluate the catabolism of glycoconjugates in saliva of children with type 1 diabetes, by measurement of the activity of N-acetyl-β-D-hexosaminidase (HEX) in their saliva. MATERIAL/METHODS The study was performed in 65 children with type 1 diabetes and 39 healthy children. Saliva...

We perform variable separation in the quasi-potential systems of equations of the form q̈ = −A−1∇k = −Ã−1∇k̃ , where A and à are Killing tensors, by embedding these systems into a bi-Hamiltonian chain and by calculating the corresponding Darboux-Nijenhuis coordinates on the symplectic leaves of one of the Hamiltonian structures of the system. We also present examples of the corresponding separati...

In this paper we develop a model of stochastic gene expression, which is an extension of the model investigated in the paper [T. Lipniacki, P. Paszek, A. Marciniak-Czochra, A.R. Brasier, M. Kimmel, Transcriptional stochasticity in gene expression, J. Theor. Biol. 238 (2006) 348-367]. In our model, stochastic effects still originate from random fluctuations in gene activity status, but we preced...

1. Goniewicz M, Włoszczak-Szubzda A, Niemcewicz M, Witt M, Marciniak-Niemcewicz A, Jarosz MJ. Injuries caused by sharp instruments among healthcare workers-international and Polish perspectives. Ann Agric Environ Med. 2012;19(3):523-7. 2. Saia M, Hofmann F, Sharman J, Abiteboul D, Campins M, Burkowitz J, et al. Needlestick Injuries: Incidence and Cost in the United States, United Kingdom, Germa...

We introduce and analyze several aspects of a new model for cell differentiation. It assumes that differentiation of progenitor cells is a continuous process. From the mathematical point of view, it is based on partial differential equations of transport type. Specifically, it consists of a structured population equation with a nonlinear feedback loop. This models the signaling process due to c...

In the automobile industry, bending and hemming processes are normally used to supplement car body panels. However, Forming Limit Curve (FLC) inappropriately induces predict bendability in process as it has a different failure mechanism deformed sheet metals can undergo greater than predicted by FLC. this work, newly developed Bending (BLC) based on strain stress were experimentally numerically...