microalloyed cast steels are a group of microalloyed steels in which reliable mechanical properties could be achieved by heat treatment. in this work, the heat treatment processes were carried out on the cast specimens as the step samples by different thicknesses and zr content. the results show that after homogenization, variations in thickness have no effect on the hardness. also, after hea...

In this work, the potential of ZnO nanowire arrays decorated with titanium nitride (TiN) nanoparticles as surface-enhanced Raman scattering (SERS) substrates is demonstrated. nanowires were grown by hydrothermal synthesis while commercially obtained TiN powders subjected to several hours mechanical grinding achieve 30–100 nm diameter nanoparticles. The then dispersed in acetone and drop cast on...

Ruthenium oxide (RuOx) thin films were spin coated by thermal decomposition of alcoholic solutions RuCl3 on titanium foils and subsequently annealed at 400 °C. The effect coating parameters, such as spinning speed, volume, molar concentration the precursor well number deposits, morphology electrochemical performance electrodes was investigated. characterized scanning electron microscopy (SEM) e...

The formation of polyene-polyyne-based nanocomposites by dehydrohalogenation the drop-cast-deposited polyvinylidene fluoride, assessment and ion-induced tailoring their gas sensing properties are reported. investigated structure was analyzed scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy, transmission Fourier-transform infrared revealing thickness-dependent incomplete ...

The blackhole attack is one of the simplest yet effective attacks that target the AODV protocol. Blackhole attackers exploit AODV parameters in order to win route requests, and thus, attract traffic, which they subsequently capture and drop. However, the first part of the attack is often neglected in present literature, while the majority of attempts in detection focus only on the second part o...

The evidence base for computerised cognitive behavioural therapy (CCBT) for common mental health problems has expanded rapidly in recent years. Reviews and meta-analyses have produced promising findings with regard to CCBT’s effectiveness and acceptability, but developing and supporting effective and sustainable models of CCBT service implementation remains a challenge. This paper considers CCB...

We prove that the zeros of the polynomials Pm(a) of degree m, defined by Borosh and Moll via Pm(a) = 2m+3/2 π (a + 1) Z ∞ 0 dx (x4 + 2ax2 + 1)m+1 , approach the lemniscate {ζ ∈ C : |ζ − 1| = 1, Rζ < 0}, as m diverges.

In the case of elastic interaction between dislocations and point defects, complex interaction mechanisms can appear, which involve simultaneously depinning-repinning processes and dragging processes.

ni-hard4 white cast iron is excellent wear resistant material and has been widely used in wearaffected equipment operated under extreme conditions, such as in mineral processing, cement, copper and iron manufacturing. in this study the effect of titanium addition (1.2, 0.7 and 0.2 wt.%) to the ni-hard 4 cast iron with the nominal composition of si= 1.5%, mn=0.5%, c=3%, p=0.05%, s= 0.05%, mo= 0....

honing is a process for finishing surfaces to obtain smooth surface. this process is used for finalpolish of inner parts such as engines cylinders. optimizing this process has always been a bigchallenge for mass production of cylinder blocks of internal combustion engines. honing processhas some variable parameters, thus to get their optimum rates the automobile cylinders were tested.in this re...