Materials Literature
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Bisphenol A and bisphenol F epoxy resins (BA and BF) were chemically modified by 9,10‐Dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide to improve their liquid oxygen compatibility. The structures of the modified epoxy resins were confirmed by Fourier transform infrared spectroscopy. Significant enhancement of liquid oxyg…
Abstract The modeling of failure in ductile metals must account for complex phenomena at a micro‐scale as well as the final rupture at the macro‐scale. Within a top‐down viewpoint, this can be achieved by the combination of a micro‐structure‐informed elastic‐plastic model with a concept for the modeling of macroscopic…
The performance of Cimetidine (2-cyano- 1-methyl- 3-(2-[(5-methyl- 1H-imidazol- 4- yl)methylthio]ethyl)guanidine) as corrosion inhibitor for mild steel in 1 M HCl was thoroughly investigated by weight loss and electrochemical methods. The inhibition efficiency of cimetidine obtained by all methods was in good agreemen…
The well-known reactive diuretic ethacrynic acid (EA, Edecrin), with low antiproliferative activities, was chemically modified and grafted onto phosphorus dendrimers and the corresponding simple branched phosphorus dendron-like derivatives affording novel nanodevices showing moderate to strong antiproliferative activi…
The aim of this work was to learn the solvent effect on preparation of poly(butylenes-carbonate) (PBC) electrospinning nanofiber filmes. For this purpose, the dissolvability and electro-spinnability of PBC in seventeen pure solvents and two blend solvents, together with morphology of the result PBC nanofiber films wer…
Cu-doped anatase TiO2 films grown by magnetron sputtering at room temperature showed the unexpected observation of room-temperature ferromagnetism, which was enhanced or destroyed corresponding to low or high impurity concentration via vacuum annealing. On the basis of the analysis of composition and structure, the mo…
The addition of carbon nanotubes (CNTs) to a matrix material is ex- pected to lead to an increase in the effective electrical properties of nanocompos- ites. However, a CNT entanglement caused by the matrix viscosity and the high aspect ratio of the nanotubes often inhibits the formation of a conductive network. In th…
Edible films and coatings are an environmentally-friendly alternative method to extend the post-harvest life of fresh and minimally processed fruits and vegetables. Edible coatings based on chitosan (CH), Aloe vera gel (AL) and its combination with Aloe vera gel (CHAL), were developed and applied to cucumber, in order…
BACKGROUND: Green synthesis of nanomaterials finds the edge over chemical methods due to its environmental compatibility. Herein, we report green synthesis of silver nanoparticles (Ag NPs) mediated with dextran. Dextran was used as a stabilizer and capping agent to synthesize Ag NPs using silver nitrate (AgNO3) under…
The interface between two band insulators LaAlO$_3$ and SrTiO$_3$ exhibits low-temperature superconductivity coexisting with an in-plane ferromagnetic order. We show that topological superconductivity hosting Majorana bound states can be induced at the interface by applying a magnetic field perpendicular to the interf…
Alternative plasmonic materials can withstand extreme temperatures, opening new frontiers in energy-harvesting applications. A metamaterial based on titanium nitride, described by J. G. Guan, A. V. Kildishev, and co-workers on page 7959, efficiently converts sunlight into heat, achieving temperatures greater than 1000…
Tube Cyclic Extrusion–Compression (TCEC) method is a novel severe plastic deformation technique developed for grain refining of cylindrical tubes to ultrafine grained (UFG)/nanostructured ones. In this method, tubes are fully constrained and deformed between chamber and mandrel with a small neck zone. The principle of…
This review summarizes available information on the application of nanocrystalline ceria in cancer therapy and diagnostics (theranostics). Factors responsible for the high biological activity of nanocrystalline ceria are analyzed. Principles of design of multifunctional drugs based on CeO 2 are considered, and example…
The aim of study was to determine the effect of glycerol on the properties of tapioca starch films. The films containing various amounts of glycerol (0-30 %w/w) were prepared by casting method. Texture analyzer, x-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) were used to comparatively chara…
바이오가스 내 주요성분은 메탄 45~75%, 이산화탄소 30~50% 그리고 황화수소 0.3% 및 수증기가 함유하고 있다. 바이오가스로부터 이산화탄소와 황화수소를 제거하기 위해 흡수공정과 분리막공정을 이용한 메탄가스 자원화연구가 수행되고 있다. 본 논문에서는 바이오가스성분으로 조제한 조제가스를 이용하여 폴리설폰으로 제조한 분리막을 이용하여 메탄을 95%까지 분리정제하기 위한 실험을 수행하였다. 분리막에 의하여 이산화탄소와 메탄의 분리를 위해 공급원료와 혼합가스의 투입압력의 효과를 연구하였고 0.3% 황화수소를 처리하기 위한 방법으로 킬레이트화합물을 사용하였다.
Compared with immersion samples, the corrosion process of 16Mn steel under wet-dry cyclic condition was studied with polarization curves. The corrosion microstructure and rusts were characterized by Scanning Electron Microscope and X-ray diffraction. The corrosion rate of the wetdry sample was about 5 times of the imm…
Improvements in nanotechnology make eco-friendly and cost-effective solutions to the drinking water contamination problem feasible. Activated charcoal, which is widely used for water purification, can be more effectively employed when reinforced with nanoparticles. For antimicrobial water treatment activated charcoal…
The possibility of obtaining of surface layers on low-carbon steel 20 by high-energy methods is shown. The features of structure formation in the surface layers after atmospheric electron-beam deposition of iron-graphite powder mixture and high-frequency current treatment are considered. It is shown that coatings with…
In terms of safety and the efficient management of spent fuel storage, detecting failed fuel is one of the most important tasks in a CANada Deuterium Uranium (CANDU) reactor operation. It has been successfully demonstrated that in a CANDU reactor, on-power failed fuel detection and location systems, along with alarm a…
Detection partial discharge (PD) using the Ultra High Frequency (UHF) has proven its worth in monitoring the condition of insulation of GIS. UHF PD detection method has some advantages compared with conventional PD detection methods such as IEC standards 60270. This research uses UHF bow-tie antenna sensor to detect P…