Materials Literature
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Polymeric materials such as polypropylene (PP), polyethylene (PE) and ethylene propylene diene monomer (EPDM) are widely used as insulators for cable applications. We investigated the effect of alumina trihydrate (ATH) loading on the mechanical properties of PP/EPDM blend. Preliminary study showed that PP/EPDM (60:40)…
Buried pipelines steels for oil and gas transport suffer near neutral pH SCC in their external surfaces. API (American Petroleum Institute) steel grades ranging from X52 to X100 were worldwide used that exhibit the classical ferrite + pearlite microstructures to complex constituent microstructures. Advances in alloy d…
This work analyzes the corrosion behavior of three types of coatings, applied in steel bars AISI 1018, corrugated, of 3/8" in diameter, and commonly used for reinforcement in soils (reinforced soil). The three coatings were: the realkalinizing type (cement based), the cathodic type (Zinc Cromate) and inhibitor type (m…
Electrospun nanofibers have increasingly attracted attention to be used as new generation tissue engineering scaffolds since they have the nanofibrous structure, which can biomimic the native Extracellular Matrix (ECM). This paper gives the review of our 10 years research on electrospun nanofibers for tissue engineeri…
BACKGROUND AND OBJECTIVES: Recently, type II collagen (CII) was found to be effective clinically for treatment of rheumatoid arthritis (RA). However, the molecular properties of CII could be changed during the preparation process. In the present study, we isolated CII from chick sternal cartilage and studied the struc…
This paper focuses on the space charge characteristics of epoxy resin and its nano-MgO composites exposed to UV irradiation. Compared with the pure epoxy resin samples, different space charge characteristics of the nanocomposites have been found. With the filler content increased (0.5 wt%∼7 wt%), the total amount of c…
Secondary-treated municipal wastewater (MWW) could supply a viable alternative water resource for cooling water systems. Inorganic salts in the concentrated cooling water pose a great challenge to corrosion control chemicals. In this study, the inhibition effect of 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP), tr…
The valve side winding of the converter transformers withstood several types of voltage. This paper investigated the effects of voltage component on the surface flashover characteristics of oil-paper insulation under combined AC-DC voltage in different ratio. The whole flashover process of surface flashover of oil-pap…
Nowadays, articaine hydrochloride (ATC) is a local anesthetic widely used in dental procedures, but its side effects include paresthesia and nerve injury. Alginate/chitosan nanoparticles (AG/CSnano) can be used as carrier for drugs, overcoming the problems. The aim of this work was to evaluate the factors (Calcium/alg…
The optical limitation effect in three-component systems formed in colloidal solutions of semiconductor CdSe/ZnS quantum dots with participation of fullerene C 60 and perylene, has been experimentally investigated. The first and second harmonics of a YAG:Nd 3+ laser operating in the single-shot mode with a pulse durat…
To investigate the feasibility of nanocarbon interconnects for future LSIs, the electrical resistance of exfoliated multilayer graphene (MLG) wirings has been studied with accurate measurements of the number of layers. We employed transmission electron microscopy (TEM) as an exact number determination method, atomic f…
Manganese ferrite nanoparticles were synthesized using the reverse micelle method and were coated with gold. TEM (transmission electron microscope) pictures showed that the shapes of the synthesized nanoparticles were almost spherical with an average diameter of 12 nm and a standard error of 4 nm. The bonding status o…
The detection of partial discharge (PD) signals has proven extremely important to diagnose the integrity of the insulation in high voltage equipments. The measurements of such signals are often accompanied by noise from different sources, which can compromise the data analysis. Numerous wavelet shrinkage denoising tec…
The temperature dependences of the Hall coefficient (4.2 K ≤ T ≤ 300 K, B ≤ 0.07 T) in Pb1 − x − y Ge x Cr y Te alloys (x = 0.03–0.08, y ≤ 0.01) are studied. An increase in the absolute value of the Hall coefficient with an increase in temperature is found. This fact is indicative of a decrease in the concentration of…
A series of impact tests of sandwich samples were completed using a large-diameter split Hopkinson pressure bar (SHPB) device at different velocities. The interlayer is made of foam concrete, loess or sand. The stress peak value decay, energy decay and waveform dispersion characters are studied by comparing incident w…
Abstract ZnO/Cu/ZnO transparent conductive thin films were prepared by RF sputtering deposition of ZnO target and DC sputtering deposition of Cu target on n‐type (001) Si and glass substrates at room temperature. The morphology, structure, optical, and electrical properties of the multilayer films were characterized b…
For decades, scientists have been trying to define relationships among yarn parameters, knitted fabric parameters, and knitting parameters with loop models. Recently, the geometrical loop models have returned to focus as they assist finding the effective parameters which cause dimensional changes during relaxation. Fu…
A modified Weiss mean-field theory is used to study the dependence of the properties of a thin ferroelectric film on its thickness. The possibility of introducing gradient terms into the thermodynamic potential is analyzed using the calculus of variations. An integral equation is introduced to generalize the well-know…
Cross-linked polyethylene and flexible epoxy resin samples have shown a conduction mechanism, never observed before, consisting of repeated ultra-fast charge pulses travelling across insulation with much higher mobility those of traditional charge carriers. This phenomenon seems to be governed by mechanical relaxation…
Abstract The leading display modes AH‐IPS and AM‐OLED for smart‐phones are compared in their electro‐optical performances. The market trend is bigger size, higher pixel density, natural color performance, and accurate readability at outdoor environment. Comparing these two, we want to ensure whether they reflect the d…