Materials Literature
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The paper deals with numerical modelling studies of DC glow discharge in argon with metastable atom density. The values of pressure is between 133.32 Pa and 330 Pa, and voltage ranges from 250 to 400 V in the case of input data taken from the Boltzmann equation in multi term approximation. In the frameworks, an analys…
Horizontally and vertically oriented few-layer graphenes have been synthesized directly on SiO2 coated Si substrates via thermal and hot-filament chemical vapor deposition, respectively. The effect of the direction of mass flow on the fabrication of graphene film is analysed and a plausible mechanism is proposed. The…
In this manuscript we review work of our group on the assembly of lipid layers on top of polyelectrolyte multilayers (PEMs). The assembly of lipid layers with zwitterionic and charged lipids on PEMs is studied as a function of lipid and polyelectrolyte composition by the Quartz Crystal Microbalance. Polyelectrolyte li…
Cobalt and its composites are known to be active and inexpensive catalysts in sodium borohydride (NaBH4) hydrolysis to generate clean and renewable hydrogen energy. A novel fiber catalyst, cobalt/graphene sheet nanocomposite anchored on polyacrylonitrile fibers (Co/GRs-PANFs), which can be easily recycled and used in…
TiO2 films consisted of small nanoparticles were fabricated via a spinning coating method on fluorine doped in tin oxide (FTO) slide glass. After calcination, the films were subsequently sensitized by CdSe quantum dots (QDs) using mercaptopropionic acid (MPA) as a bifunctional surface modifier. Upon UV light irradiati…
Recent keywords of the heavy industries are large-scale structure and productivity. Especially, the sizes of the commercial vessels and the offshore structures have been gradually increased to deliver goods and explore or produce oil and natural gas in the Arctic. High heat input welding processes such as electro gas…
Poly(N-isopropylacrylamide-co-N-hydroxysuccinimide ester) was synthesized by free radical polymerization followed by gelatin grafting to obtain biocompatible thermosensitive poly(N-isopropylacrylamide-co-N-hydroxysuccinimide ester)-g-gelatin. Electrospinning was then applied to fabricate aligned thermoresponsive poly(…
본 연구는 고로슬래그 미분말(GGBFS)의 구성성분이 알칼리 활성화 슬래그 시멘트(AASC)에 미치는 영향에 관한 연구이다. 산화알루미늄(Al₂O₃)을 고로슬래그 미분말 중량에 대해 2~16% 혼합하였다. 활성화제는 KOH를 사용하였고, 물-결합재 비는 0.5이다. 강도 향상은 Al₂O₃ 혼합률이 증가함에 따라 수화반응의 향상으로 나타난다. 재령 28일에서 가장 높은 강도는 2M KOH + 16% Al₂O₃와 4M KOH + 16% Al₂O₃일 때이고 각각 30.8 MPa과 45.2 MPa이였다. 재령 28일에서 2M KOH + 16% Al₂O₃의 강도는 2M KO…
The aim of the presented research was to evaluate wear effects of bearing elements in case of modification based on laser alloying with boron of journal surface layer. The research was performed on ZPG-IV tribology tester with journal-bearing friction pair. During the test load was applied progressively. SEM microscop…
The purpose of the present review was to analyze contemporary data on the standards and test methods of pesticide personal protective equipment (PPE). We have reviewed national and international articles, private reserve regulations and standards such as ISO, KS, ASTM, etc. Studies on human thermal physiological respo…
Anodizing is a technology to generate thicker and high-quality films than natural oxide films by treating metals via electrochemical methods. Electrochemical manufacturing method of nano structure is an efficient technology in terms of cost reduction, high productivity and complicated shapes, which receives the spotli…
Recent years, supercapacitors have been attracting a growing attention as an efficient energy storage, due to their long-lifetime, device reliability, simple device structure and operation mechanism and, most importantly, high power density. Along with the increasing interest in flexible/stretchable electronics, the s…
The effectiveness of aluminum alloy use for manufacturing gears of tank trucks, cement trucks and fright car bodies of railway transport is shown. For these objects manufacturing it is efficiently to use aluminum alloys 1565 and B 1341 the welded joints of which are made with the use of science intensive techniques of…
The unidirectional torsion properties of silk fibre were investigated on a purpose-built single fibre torsion tester. The torsional fracture angle and the number of cycles of torsion at breaking were recorded, and the effect of the gauge length and pretension together with the torsion speed on the torsion properties o…
technique allows growth of wear-resistant and antifriction hard DLC films, with prevalence of sp 3 bonds in relation to hydrogen bonds. This paper presents an experimental evaluation of vanadium carbide layer (VC) thickness formed by reactive thermodiffusion process (TRD) for subsequent deposition of DLC. The salt bat…
The slip velocity and frictional or slip heating of linear‐low density polyethylene with a fluoropolymer processing aid in capillary flow were measured by rheo‐particle image velocimetry and thermal imaging. The pure polymer did not show slip before the stick‐slip regime but exhibited strong slip when blended with the…
A facile and economical one-pot strategy has been developed for the synthesis of water-solute CdTe and CdTe/ZnS core/shell quantum dots (QDs) using tellurium dioxide (TeO2) as a tellurium precursor and thioglycolic acid (TGA) as stabilizer without any pre-treatment and inert atmosphere protection. As-synthesized QDs w…
The epidermal growth factor receptor (EGFR) protein has received significant attention in medical biotechnology because it is an important component in cell growth and division. We report the results of a study on the binding between the EGFR protein and the associated aptamer, measured in real time. Aptamers can be u…
A novel strategy for preparing high-aligned continuous Polyacrylonitrile (PAN) electrospun nanofibers yarns is introduced. The yarn is rolled up from circular deposition, which can be changed by controlling the humidity of spinning environment. High-aligned yarn is obtained with the rolling speed of 57 m/min. Very few…
Numerical analysis of cooling assessment in hot vertical fuel rod is carryout using ANSYS 14.0 – CFX Solver. Rewetting is the process of re-establishment of coolants with hot surfaces. Numerical validation exercise carried out with number of turbulence and shear stress turbulence model fairly predict the experimental…