Materials Literature
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The longest afterglow time of an orange-red- emitting SrS:Eu2+,Pr3+ afterglow phosphor by visible light irradiation was about 1010 minutes was previously achieved by varying the synthetic conditions such as amount of Li+ added, reduction temperature, reduction time, and initial Eu/Sr and Pr/Sr atomic ratios in previou…
Spray quenching process is nitrogen, water mixture as the cooling medium of the new quenching process. The research shows that the flow of water and nitrogen pressure can be controlled to achieve the purpose of cooling rate. T10 steel as a cylindrical test object, the different ratio of water flow, nitrogen pressure a…
In this paper we present experimental results on preparation and characterization of colloidal CdSe quantum dots in organic solvent. CdSe QDs were synthesized following a modifi ed literature method. CdSe QDs were isolated by adding acetone to the cooled solution followed by centrifugation. CdSe QDs have been characte…
Poly(butylene adipate-co-terephthalate) (PBAT) is a biodegradable aliphatic-aromatic copolyester. In this paper, we report the radio induction of photoluminescence (PL) properties in PBAT, after exposure to high doses of gamma radiation. After the previous high-energy irradiation, the material shows the highest photo-…
Polymer film based on 2-aminothiazole has been prepared at the surface of glassy carbon electrode via electropolymerization. The film has been modified via electrodeposition of rhodium particles. Hydrogen reduction has been observed at the so prepared composite films. Rhodium nanoparticles have been found uniformly di…
The recent years studies show, that almost all known building materials are exposed to biological damages, including artificial ones created by man, such as concrete. This largely substances. Currently, the aim of investigating the concrete biological stability in aggressive media and the research for effective ways t…
Magnesium slag is a kind of industrial waste during the silicothermic process for magnesium reduction which has potential hydration activity. By adding 20% to 50% of magnesium slag into Portland cement, the influence principle of the additive amount of magnesium slag on the pozzolanic activity is investigated through…
The diode emission system with the field emitter as a sphere on cone is presented. The anode is a part of a sphere. The interior of system's domain is contained with different dielectrics. The boundary-value problem for the Laplace's equation is solved in the spherical coordinates.
The basic aim of this paper is to increase awareness amongst the researchers and to draw their attention towards the present approach to deal with the cryogenic treatment for the nonferrous metals. Cryogenic treated nonferrous metals will exhibit longer wear and more durability. During metal making process, when solid…
Multi-wall carbon nanotube (MWCNT) structures were grown on cobalt catalyst layer through Plasma Enhanced Chemical Vapor Deposition (PECVD) process. Acetylene (C2H2) and hydrogen (H2) are used as precursors during the PECVD process. The morphology structures of the MWCNTs grown under different PECVD time were investig…
In this paper, a model of the friction coefficient in the high-speed penetration process has been used, which considers the micro-asperities of the projectile surface, the adiabatic shearing and the heat conduction on the nose of projectile. It also considers that the coefficient of friction is a function of the slidi…
The experimental results of studying the temperature and frequency dependences of dc and ac conductivity as well as the dispersion of dielectric coefficients of the grown single crystals of the (TlInSe 2 ) 0.1 (TlGaTe 2 ) 0.9 solid solution are presented. The nature of dielectric losses and the hopping charge transfer…
Summarizd the methods of oxide coated on the surface of carbon nanotubes. Using carbon nanotubes (CNTs) as template, TiO2/CNTs nanocomposite was prepared by a sol-gel method. Urea as a promoter, obtained by the slow hydrolysis of tetrabutyl titanate Ti (OH)4 precursor is deposited on the carbon nanotubes, is further d…
Multiple layers of clothing are known to increase thermal resistance and evaporative resistance. This study investigates the effect of wearing abaya, an Islamic outerwear stipulated for women, on thermal resistance performance assessed with a female thermal manikin. Tests were conducted at two climatic conditions. The…
Abstract. The study provides argumentation of a recipe for foam and emulsion dairy products containing vegetable fats. The aim of the study is to examine the impact of major recipe components on foaming capacity and foam stability. The task of creating persistent emulsion systems with a foamy structure is possible due…
The demand for energy-absorbing lightweight structures for impact applications in automotive, aerospace and defence industry is rapidly growing, posing a challenge for innovative engineering design to maintain lightweight without reducing damage tolerance and impact and shock absorption. In this context, biological ma…
Low-voltage (≤−3 V) and flexible polymer thin-film transistors are successfully fabricated, and their applications in photo-/thermal detectors are reported by Y. Q. Liu, G. Yu, Y. Q. Ma, Y. L. Guo, and co-workers on page 3631. A high mobility of 11.0 cm2 V−1 s−1 is achieved by employing diketopyrrolopyrrole-based copo…
Ferritic stainless steels exhibit properties, such as good electrical conductivity, good corrosion resistance and low cost, that are beneficial for their application as interconnects in intermediate temperature solid oxide fuel cells (ITSOFC) that function at temperatures between 600°C and 800°C. However, the stainles…
Abstract Damages related to hydrogen absorption in steels are well known and described since decades. As hydrogen sources often moist electrode covering as well as etching and galvanic processes and corrosion are mentioned. In contrast, the hydrogen absorption during heat treatment processes in hydrogenous atmospheres…
Herein, we investigated the influence of the shell thickness of hollow silica-alumina composite spheres on their activity for hydrolytic dehydrogenation of ammonia borane (NH3BH3). Silica-alumina composite shells were fabricated by coating on polystyrene (PS) template particles and then completely removing the PS by c…