Materials Literature
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The effect of Ar/O2 mixing ratio on gas-phase characteristics and SiO2 etching kinetics in CF4 + Ar + O2 and C4F8 + Ar + O2 plasmas was studied under conditions of 13.56 MHz inductive RF discharge. The constant processing parameters were fraction of fluorocarbon component in a feed gas (50%) total gas pressure (6 mTor…
Nuclear data and their associated co-variances are constantly being reevaluated as techniques improve and as new experimental data, as well as nuclearmodel developments, emerge. A standard technique used to evaluate mean values in nuclear data, and their associated covariances, is the generalized linear least squares…
X-ray fluorescence (XRF) is a non-destructive analytical technique used to determine the elemental composition of materials. XRF analysis provides a means to deconstruct target objects down to their basic elemental make up. The XRF instrument utilizes a detector that registers this energy and categorizes it by element…
Abstract This communication focuses on the Raman spectroscopic characterization of a voltage‐controlled electrospray deposition (VCED) of multiwalled carbon nanotubes (MWCNTs) dispersed from acid refluxed and SDBS (sodium dodecyl benzene sulfonate) assisted carbon nanotube (CNT) dispersion techniques. This versatile m…
Emulsification of water and fuel oil emulsion was experimentally investigated. The water-in-oil emulsion was produced with ultrasonic mixer and phase inversion concentration using a mixture of Span80 and Tween80 as emulsifiers. The emulsion was characterized by water droplet size, distribution and visual observation o…
made of squishy, flexible materials can squeeze into tight spaces and manipulate unusually shaped objects better than their rigid cousins. But their soft structures can sustain mechanical damage through repetitive tasks, such as walking and gripping. Researchers have developed a protein-based polymer that can be used…
In current study, vibration and stability analysis comparison of two nanostructures i.e. nanoshell (NS) and piezoelectric nanoshell (PENS) subjected to electrostatic excitation and Visco-Pasternak medium is investigated using the Gurtin--Murdoch surface/interface (S/I) theory. For this analysis, Hamilton's principles,…
In order to study the tribological properties of titanium alloy materials and reinforced PTFE pairs treated by surface nitriding modification in seawater environment under low speed and high load, the physical properties of surface nitriding modified treatment were observed and measured with Ti-6Al-4V ELI as the subst…
Cracking in continuous casting has always been one of the main problems of steel mills. Many cracks that occur during solidification are difficult to observe from outside the industrial mold. In order to better understand the formation of this defect, compared with the large-scale simulation used in the entire industr…
Electrical insulation is required for preventing short-circuit faults occurring in electrical equipment and systems (e.g., Ragaa, 2012 ). In addition to normal electrical stress, electrical insulation is often exposed to abnormal electrical stress such as higher-frequency harmonics and impulse voltages produced from a…
High-voltage transformers are monitored in order to avoid unnecessary electric power interruptions and to extend the transformer&s;s service life ( Lorin, 2005 ). One approach has been to monitor the electrically insulating oil in which the transformer is immersed using several techniques ( Bureau of Reclamation et al…
Although SF 6 is a powerful high-voltage insulating gas, it is also recognised as one of the most serious greenhouse warming gases ( Stocker et al., 2013 ; Seeger et al., 2017 ). Alternatives have been considered from an environmental aspect as well as current interruption capabilities (Kieffel et al., 2016; Seeger et…
The purpose of the study was to inspect microstructure, mechanical properties and impact toughness of ductile cast iron grade FCD450 produced by austempering process. The study focused on austempering parameter, which effected impact toughness of material at low temperature. The FCD450 was initially temperature austen…
This chapter provides a brief overview of the global scenario, using China, Italy, and the United States as examples. Issues and challenges of data analytics regarding pandemics like COVID-19 are also presented in this chapter with mitigation strategies that can be implemented. Recommendations for citizens, patients,…
Unhairing is one of the major steps of the leather tanning process which removes the hairs, epidermis and to some degree inter-fibrillary proteins. This process needs high amounts of chemicals that cause environmental difficulties. On the other hand, these chemicals are available in the wastewater of the Merox unit of…
Chapter 6, “The Polarizing Two-Termers: George W. Bush and Barack Obama,” explores the character and leadership approaches of George W. Bush and Barack Obama. While these presidents were liked by their fellow partisans, opposition partisans failed to appreciate the character of their leadership. Their lack of politica…
This research is concerned with properties of 0.5BZT-0.5BCT through a water based gel casting process by using Ethylene Glycol Diglycidyl Ether (EGDGE) epoxy resin as a gelling agent. A solution of an ammonium salt of an acrylic polymer in water (NH4PAA) was used as an additive in order to make the dispersion of the p…
Computational modeling reveals the major factors behind the high efficiency of CdSeTe solar cells and identifies ways for further improvements.
Si/Ge nanostructures have attracted much attention since they are compatible with current microelectronics technology. The geometry and composition variations can be used to tune their electronic properties. Here, we introduce a 3D Si/Ge superlattice, metalattice, made of more volumetric meta-atoms and thinner metabon…
Barkhausen noise (BHN) measurement is one of electromagnetic testing methods that is suitable for ferromagnetic materials. It has a sensitivity to different material properties such as microstructure, composition, residue stress, hardness, etc. which can also be used to determine the hardness case depth of a hardened…