A review of the recent literature on the surgical management of anterior urethral stricture was performed. The literature was searched via PubMed using the search terms 'urethral stricture' and 'urethroplasty' from 1996 to 2009. The management of anterior urethral strictures is changing rapidly in the sense that the reconstructive procedures have evolved greatly. Penile skin, because of its loc...

Our earlier studies have shown that simultaneous inhibition of glycolysis and pentose phosphate pathway using 2-deoxy-d-glucose (2-DG, an inhibitor of glycolysis) and 6-aminonicotinamide (6-AN, an inhibitor of pentose phosphate pathway) lead to metabolic oxidative stress (MOS), resulting in radiosensitization in malignant cells. Present study was carried out to investigate the effects of 2-DG a...

In recent years, CuZr-based bulk metallic glass (BMG) composites ductilized by a shape memory B2 CuZr phase have attracted great attention owing to their outstanding mechanical properties. However, the B2 CuZr phase for most CuZr-based glass-forming compositions is only stable at very high temperatures, leading to the uncontrollable formation of B2 crystals during quenching. In this work, by in...

The enthalpy relaxation behavior of Ti41.5Cu37.5Ni7.5Zr2.5Hf5Sn5Si1 bulk metallic glass (BMG) was investigated in this study. It is found that relaxation behavior follows the general characteristics for amorphous materials: the annealing time dependence of recovery enthalpy follows a stretched exponential function with the mean relaxation time obeying an Arrhenius law. In addition, the equilibr...

In order to establish a relationship between microstructure and mechanical properties, we systematically annealed a Zr-based bulk metallic glass (BMG) at 100 ~ 300 °C and measured their mechanical and thermal properties. The as-cast BMG exhibits some ductility, while the increase of annealing temperature and time leads to the transition to a brittle behavior that can reach nearly-zero fracture ...

Bulk metallic glasses (BMGs) surpass the strength of steels and possess elasticity formability polymers. The key to obtain these properties is conserve amorphous structure a melt avoid crystallization during processing. In this work, change in sequence widely used BMG ${\mathrm{Zr}}_{52.5}{\mathrm{Cu}}_{17.9}{\mathrm{Ni}}_{14.6}{\mathrm{Al}}_{10}{\mathrm{Ti}}_{5}$ (Vit105) upon addition sulfur ...

T he current auditing crisis of big business can provide useful lessons and suggestions for improving similar practices within the computer industry. Audit trails, whether computerbased or manually produced, typically form a significant part of the front-line defense for fraud detection and prevention within systems. Many of our security practices revolve around the generation and preservation ...

In this study, new multicomponent Fe54M5Cr15Mo6Si2B4P10C4 (M = Fe, Co, and Ni, denoted as Fe59, Fe54Co5, Fe54Ni5, respectively) bulk metallic glasses (BMGs) with excellent corrosion wear resistances were synthesized using the J-quenching technique fluxing treatment. The Fe-based BMGs possessed a large glass-forming ability, maximum diameters of Fe54Ni5 glassy alloy rods reached 5.5, 4.5, 4.0 mm...

A major drawback in using bulk metallic glasses (BMGs) as structural materials is their extremely poor fatigue performance. One way to alleviate this problem is through the composite route, in which second phases are introduced into the glass to arrest crack growth. In this paper, the fatigue crack growth behavior of in situ reinforced BMGs with crystalline dendrites, which are tailored to impa...

Thermo-mechanical-physical properties of bulk metallic glasses (BMGs) depend strongly on the concentrations of each of the chemical elements in a given alloy. The proposed methodology for simultaneously maximizing these multiple properties by accurately determining proper concentrations of each of the alloying elements is based on the use of computational algorithms rather than on traditional e...