Hydroxyurea (Hy) in aqueous solutions has several tautomeric forms due to the formation of a >N-OH bond. The azometinic group >C=Nis present in all these tautomeric forms. The structural forms influence the hydrophil-lipophil character of Hy and it determines the complexing of the Fe(II) ions, thus explaining the appearance of anemia, due to the treatment with hydroxyurea. The paper presents a ...

A new method (thermal spokes) is proposed to simulate the guide rolls in FE analysis of the ring rolling process. So far this method is the only one, capable of calculating guide rolls reaction contact forces related to the stiffness of their adjustment mechanism. The method is simple to use, does not introduce further nonlinearities and could be used in any kind of FE formulations. The method ...

A new method (thermal spokes) is proposed to simulate the guide rolls in FE analysis of the ring rolling process. So far this method is the only one, capable of calculating guide rolls reaction contact forces related to the stiffness of their adjustment mechanism. The method is simple to use, does not introduce further nonlinearities and could be used in any kind of FE formulations. The method ...

Combinatorial optimization problems arise in many areas of science and engineering. Unfortunately, due to the NP (non-polynomial) nature of these problems, the computations increase with the size of the problem (Bahreininejad & Topping, 1996; Topping & Bahreininejad, 1997). Finite Elements (FE) mesh decomposition (partitioning) is a well known NP-hard optimization problem and is used to split a...

The Kato-Katz (KK) method is a well-known method of fecal examination for helminthiases. Its diagnostic sensitivity was found very high for clonorchiasis. The present study evaluated the correlation of Clonorchis sinensis egg counts by the KK method with those by direct smear and formalin-ether (FE) technique. The egg counts obtained by the KK method (Y) were correlated with the counts by direc...

The measurement and numerical modelling of ultrasonic wave scattering is essential for detecting complex defects in safety critical components for engineering structures across a range of industries. Fast and accurate numerical modelling to simulate candidate set ups for Non-Destructive Evaluation (NDE) is attractive as it both improves confidence in the inspection results and reduces the cost ...

Finite stress and strain analyses of the heart provide insight into the biomechanics of myocardial function and dysfunction. Herein, we describe progress toward dynamic patient-specific models of the left ventricle using an immersed boundary (IB) method with a finite element (FE) structural mechanics model. We use a structure-based hyperelastic strain-energy function to describe the passive mec...

Simulation based on the finite-element (FE) method plays an important role in the investigation of intra-body communication (IBC). In this paper, a finite-element model of the whole body model used for the IBC simulation is proposed and verified, while the FE simulation of the galvanic coupling IBC with different signal transmission paths has been achieved. Firstly, a novel finite-element metho...

A rapid, simple and sensitive spectrophotometric method is presented for the determinations of salicylamide and paracetamol in mixture. The method is based on their complexation and oxidation reactions by Fe ion. Two sets of conditions were established such that in one set of conditions only salicylamide reacts with Fe ion, but in the other set of conditions both of the salicylamide and paracet...