Materials Literature
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Scanning electron microscopy with orientation analysis by the electron backscatter diffraction (EBSD) method is used to study microstructures and textures formed in the 0.08C-13Cr-3Ni-Mo-V-Nb steel through seamless tube production route: after hot deformation by extrusion; after quenching from various temperatures and…
Over the past few decades, magnetic resonance imaging (MRI) has proven to be extremely successful in medical applications. More recently, the biomedical applications of MRI have been gaining more use in the field of clinical pharmacy. In 1977, perfluorocarbon compounds (PFC), which form emulsions that can carry drugs,…
During the operation of a nuclear reactor, the external individual doses received by the personnel are measured and recorded, in conformity with the regulations in force. The sum of these measurements enables an evaluation of the annual collective dose expressed in man·Sv/year. This information is a useful tool when c…
Olive oil production is one of the main agriculture activities in many Mediterranean countries and it usually produces huge quantities of wastewaters. The management, treatment and safe disposal causes serious environmental issues. The adverse characteristic properties of OMW, which are the main responsible of their h…
thin film microbridges that results in novel magneto-transport effects. In particular, the electron beam preferentially produces insulating regions within the narrow film and can be used to create a configuration consisting of ferromagnetic metallic domains separated by a potential barrier. This arrangement enables th…
Thermal conductivities of graphene and graphyne are revealed to be tunable under in-plane circular rotations caused by the evolution of surface morphology using non-equilibrium molecular dynamics method.
Measurement of ionic conductivity and electrode polarization resistance on a 8YSZ sample with platinum paste electrodes was conducted using a DC method with high input impedance meters over a temperature range from 119°C to 589°C. Over the entire temperature range, the meter resistance was much larger than the sample…
In this study, pure silver (Ag) thin film of 8 nm was deposited onto glass substrate by using radio frequency (RF) sputtering technique and was then exposed to microwave assisted oxygen plasma generated by microwave plasma CVD. The oxidation of Ag into AgO thin film was studied using varying microwave power. The influ…
Besides having advantages including high utilization rate, high productivity and superior mechanical properties, gear rolling also overcomes many problems of closed die forging such as bad mold working conditions and difficult ejecting from the die due to heavy loads. In gear rolling process, the main problems to solv…
The purpose of this study is to investigate the variation of the required punch load during the deep drawing process under different friction conditions. In this regards, several deep-drawing tests of cylindrical cups were conducted under four friction conditions at the tool–blank interface. The first case was the dry…
The structures of two novel pyridinium catecholates are reported by reaction of pyridine with tetrachloro- o -benzoquinone and tetrabromocatechol; with tetrachlorocatechol pyridine acts as a base with the structure of the pyridinium-catecholate salt reported.
In this study, mechanical and magnetic properties of high silicon ductile irons (GJS 500-14- and GJS 600-10) with fully ferritic initial microstructures were investigated after being austempered at 270–390°C for 60 min. Results showed that hardness and strength as well as ductility are mainly controlled by morphologie…
ZnO films deposited on silicon porous substrates (PS) were prepared by electro-deposition anodization on n type (100) silicon wafer. This ZnO/PS structure combines substrates having specific structural and optical properties (IR emission), with nano-composites of ZnO potentially interesting due to their functional pro…
A database of aviation materials and an expert system are developed. They allow performing thermogas dynamic calculations of turbofan engines of various schemes and action principles, automatically create a constructive image of engine main units, calculate the heat, inertial and gas-dynamic load, to evaluate heat, in…
This article describes a method developed to predict the wear resistance of thread rolling tools, which is based on the assumptions of the energy theory of wear applicable to solids. Through experiments, the authors defined the energy intensity of wear for the 30CrNiMo8 steel at room temperature and at 400°C and 800°C…
Intrusive luxation is a severe trauma-related event with a high frequency of pulp necrosis and root resorption. A common complication following intrusion is tooth ankylosis, which can extend to progressive replacement root resorption. An increasing infraposition in growing individuals can also occur. Decoronation is a…
Nanocelluloses isolated from agricultural biomass have attracted increasing attention as emerging renewable nanomaterials as well as ways to valorize these otherwise underutilized wastes from the food production system while alleviate the negative impact on our environment. Rice straw represents the largest quantity c…
Powder metallurgy is a good option when coupled with pressure as a method to obtain nanostructured materials (NsM). The samples obtained by these means are nearly fully dense specimens that present low internal stresses. In this work, nickel is chosen to study the possibilities of nanostructuration via Spark Plasma Si…
Physisorption drives structural change leading to thermally stable CO chemisorption.
Low- and middle-income countries (LMICs) are particularly affected by cardiovascular diseases (CVDs), as more than 75% of all CVD deaths occur in these countries. Global prognostic figures are alarming, as an estimated 23.6 million people will die each year due to CVDs by 2030. For this reason, one of the targets of t…