Materials Literature
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Highly thermal and photostable nonlinear optical polymers were obtained by covalently incorporating the tricyanovinylidenediphenylaminobenzene (TCVDPA) chromophore to a polycarbonate backbone. NLO polycarbonates with different chromophore attachment modes and flexibilities were synthesized. In spite of the high loadin…
Power and distribution transformers form important components in the electricity grid. Failure of such important components can give rise to high costs (such as costs for repair and cost for non-delivery). Therefore methods to determine the risk of failure of transformers are of importance. It is known that failure du…
The selection of sewing needles, the fineness of sewing thread, relative air humidity, as well as the thickness and density of knitted fabric play a significant role in the technological process of sewing. Damage to knitted fabric loops during sewing are closely connected with sewing needle penetration force and dynam…
An AZ91 alloy pretreated by ultrasonic vibration (UV) was subjected to extrusion to refine the microstructure. The results indicated that the UV pretreatment had a strong influence on the microstructure evolution and mechanical properties of the extruded AZ91 alloy. With UV pretreatment, a fine and uniform microstruct…
This paper focuses on the reactivity of iodine which is the most critical radioactive contaminant with potential short-term radiological consequences to the environment. The radiological risk assessments of 131 I volatile fission products rely on studies of the vapour-phase chemical reactions proceeding in the reactor…
In recent years the number of publication on SPS has grown exponentially although the process itself is still not completely understood. The SPS process is governed by a complex bulk and contact multiphysics. The contact resistance between SPS system elements is crucial to understand the overall current and temperatur…
Synthesis of Cu2S dendritic nanostructures by a gas-solid reaction method has been achieved. The Cu2S dendritic nanostructure consists of a backbone and small branches aligning symmetrically and densely on the backbone like a double comb. Transmission electron microscopy has revealed that the backbone is along the c a…
Porous glass was fabricated using spinodal decomposition in multi-component oxide glass and leaching out one of the decomposed phases with acid solution. Multi-component borosilicate glass compositions were designed for the porous glass by partially replacing SiO2 by B2O3 in silicate glass compositions where the occur…
Fe and Al nanocomposites have been prepared using the plasma-gas-condensation cluster deposition system and investigated by transmission electron microscope and magnetization measurements. In Fe-Al alloy clusters assemblies prepared with the single glow discharge source there are bcc Fe-Al and B2-type ordered FeAl pha…
Spectral features of the near-band-edge photoluminescence (PL) of submicron-sized ZnO crystals such as nanoplatelets, nanowires, and nanorods grown by an ultrasonic spray pyrolysis (USP) technique were investigated. The measurements of time-integrated and time-resolved PL spectra were performed in the temperature rang…
The interaction of dislocations with a static mode I crack is studied by large scale molecular dynamics simulations. The model consists of a blunted [001](110) crack in nickel, to which after relaxation at K < KIc the displacement field of a dislocation is added. The response of the system is monitored during its evol…
Abstract The synthesis of the perdeuterated cellulose solvents NMMO‐d 11 (9) and N , N ‐dimethylacetamide‐d 9 (14) is described. NMMO‐d 11 was obtained according to a five‐step approach from non‐labeled diglycolic acid (1) via diethylene glycole‐d 8 (4) and its bis‐tosylate (5), which underwent cyclization with benzyl…
Three heterometallic complexes [M(H(2)O)(n)][Cu(3)L(2)(H(2)O)] (M = Mn(2+), Co(2+) or Ba(2+)) and one dinuclear compound (CuDien)(CuL{H(2)O}) were prepared by interaction of anionic compounds Cu(3)L(2)(2-) or CuL(2-) with the corresponding cations (H(4)L = 1,9-dicyano-1,9-bis(hydroximino)-3,7-diazanonane-2,8-dione; Di…
New five-ring bent-core mesogens have been synthesized in which terminal alkynyl chains are connected with the terminal rings of the aromatic core by means of oxycarbonyl groups, cinnamic esters groups or oxyacetic ester moieties. The insertion of C–C triple bonds in different positions of the terminal chains can chan…
The electronic conductivity of yttria-doped ceria, ( , 0.1 step), was obtained as a function of oxygen partial pressure at , 1073, 1173, and by a dc polarization method using a Hebb–Wagner's polarization (ion blocking) cell over an oxygen partial pressure range of . All obtained data were fitted as a sum of the electr…
The photoluminescent (PL) properties and critical-distance measurements of phosphors excitable by vacuum UV (VUV) and UV light are reported. The highest emission intensity was found for the sample with a composition of , beyond which concentration quenching was observed. Moreover, the obtained critical distance value…
The variations of optical absorption of gold nanoshells with the shell thickness, size of the core, and core dielectric constant have been investigated by means of Mie theory. It was found that with the increase in the thickness of the shell, the strength of absorption peak increases first and then decreases. We also…
Wastewoods (logging residues) generated in Korea were used to make lignocellulosic fillers for papermaking. Lignocellulosic fillers could play great roles to increase retention efficiency and thus decrease turbidity of white water in papermaking process. In addition, lignocellulosic fillers could be used to improve ph…
3,6-Dibutylphthalonitrile (3) fused with a TTF unit was prepared and treated with lithium in n-pentanol to produce octabutyltetrakis(tetrathiafulvaleno)phthalocyanine (5).The structure of the product was determined by 1 H NMR and FAB MS.Electrochemical and optical properties of compound(5) were estimated by cyclic vol…
Die Experimente LIVE-L1 und LIVE-L3 zum Schmelzenverhalten im unteren Plenum des RDB Der Ablauf eines hypothetischen Kernschmelzunfalls in einem Reaktordruckbehälter (RDB) eines Druckwasserreaktors (DWR) beinhaltet eine große Anzahl komplexer physikalischer und chemischer Phänomene. Um das Verständnis über mögliche Ab…