Materials Literature
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Frequency response analysis (FRA) is gaining global popularity in detecting power transformer winding and core deformations due to the development of FRA test equipment. However, because FRA relies on graphical analysis, interpretation of its signatures is still a very specialized area that calls for skillful personne…
Despite the success of alginate scaffolds and mesenchymal stem cells (MSCs) therapy in cardiac failure treatment, the impact of the physicochemical environment provided by alginate matrices on cell behavior has never been investigated. The purpose of this work was double: to determine the alginate composition influenc…
A magnetic gear offers many advantages over its mechanical counterpart such as contact free torque production, no gear lubrication and inherent overload protection. However, current magnetic gear designs use large quantities of rare-earth magnet material and unfortunately the high cost of rare-earth material makes the…
Traps of energy levels Ec −0.26 and Ec −0.61 eV have been identified as as-grown traps in n-GaN grown by metal–organic chemical vapor deposition by using deep level transient spectroscopy of the Schottky contacts fabricated by resistive evaporation. The additional traps of Ec −0.13 and Ec −0.65 eV have been observed i…
At present, in production of commercially available biopolyamides, castor oil is used as one of raw materials. In this paper possibilities of processing biocomposites based on biopolyamide (commercially delivered by Chinese company Suzhou Hipro Polymers) filled with 10 or 20 wt. % of glass, carbon or flax fibers were…
The focus of this work consists in analyzing water flow inside a water cooling electric motor frame. Aiming of work is in the comparison of load losses and the avoidance of hot spots in two types water cooled frames. Total losses of electrical machine were considered as thermal load. Electrical motor is new designed e…
Heart disease is a major cause of morbidity and mortality. Cellular therapies hold significant promise for patients with heart disease. Heart-derived progenitor cells are capable of repairing a diseased heart through modulation of growth factor milieu and temporary engraftment leading to endogenous repair. The proof-o…
Acoustic noise and vibration of electrical machines becomes increasingly relevant. The determination of equivalent mechanical material parameters of electrical steel is therefore necessary to bound the computational costs of the structural dynamic simulation to practical levels. An analytical model based on fundamenta…
We have constructed a glucose/O2 biofuel cell (BFC) with electrochemically reduced graphene oxide - multiwalled carbon nanotube (ERGO-MWCNT) modified glassy carbon electrode (GCE) as anode and graphene-Pt composite modified GCE as cathode. The electrochemical characterization results show that enzyme GOx was well immo…
Polycyclic aromatic hydrocarbons (PAHs) are of great interest due to their excellent optoelectronic properties and selfassembling properties. As a class of PAHs, star-shaped PAHs have a particular two-dimensional architecture and can self-assemble into three dimensional packed structures. Therefore, star-shaped PAHs h…
Abstract This article investigates the effects of solvent polarity and salt addition on β‐phase poly(vinylidene fluoride) (PVDF) formation. Films were solvent cast in aprotic solvents of varying polarities with or without salt addition. Characterization was done by Fourier transformed infra‐red spectroscopy, different…
Fibrillar aggregates of misfolded amyloid proteins are involved in a variety of diseases such as Alzheimer disease (AD), type 2 diabetes, Parkinson, Huntington and prion-related diseases. In the case of AD amyloid β (Aβ) peptides, the toxicity of amyloid oligomers and larger fibrillar aggregates is related to perturbi…
Intensive research has been devoted to the resistive switching phenomena observed in many transitional metal oxides because of its potential for non-volatile memory application. To clarify the underlying mechanism of resistive switching, a planar device can provide information that is not accessible in conventional ve…
Using magnetic flux barriers in the stator yoke of electric machines with fractional slots, tooth-concentrated winding it is possible to reduce or even to cancel some space harmonics of low order in air-gap flux density resulting in lower rotor losses induced by the armature reaction field. This technique is applied t…
Al2O3 films, HfO2 films, and HfO2/Al2O3 stacked structures were deposited on n-type, Ga-face, GaN wafers using plasma-enhanced atomic layer deposition (PEALD). The wafers were first treated with a wet-chemical clean to remove organics and an in-situ combined H2/N2 plasma at 650 °C to remove residual carbon contaminati…
We investigated the thermal and electrical conductivity of water seeded with single-walled carbon nanotubes (SWCNT) synthesized using the alcohol catalytic chemical vapour deposition method. Sodium deoxycholate was used as the surfactant to prepare stable nanofluids, which we then thoroughly characterized by microscop…
A general approach to the design of high performance ferrite-assisted synchronous reluctance motors is presented. Reference is made to a rectified rotor structure, with multiple flux barriers, designed to optimize the performance and the exploitation of the PM material. The key design issue of de-magnetization is anal…
Fat grafting is a common reconstructive and aesthetic procedure with extensive clinical applications. Recently, significant strides have been made in investigating the biology behind the success of this procedure. Surgeons and scientists alike have advanced this field by innovating fat graft harvesting and injection t…
Natural fibres, especially cotton, are still the most important kinds of fibres because of their numerous advantages such as high tensile strength, good abrasion resistance, high moisture absorption, quick drying and absence of static problems. However, cotton has poor elasticity and resilience, i.e. poor wrinkle reco…
AIM: Modulating endothelial cell (EC) morphology and motility, with the aim to influence their biology, might be beneficial for the treatment of vascular disease. We examined the effect of nanoscale matrix anisotropy on EC organization and migration for vascular tissue engineering applications. MATERIALS & METHODS: We…