Materials Literature
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Tank AY-102 was the first of 28 double-shell radioactive waste storage tanks constructed at the U. S. Department of Energy’s Hanford Site, near Richland, WA. The tank was completed in 1970, and entered service in 1971. In August, 2012, an accumulation of material was discovered at two sites on the floor of the annulus…
为了制备具有优异强度与韧性的聚乳酸(PLA)复合材料,首先,将八聚(丙基缩水甘油醚)倍半硅氧烷(Ope-POSS)纳米粒子引入PLA中,并加入PLA接枝甲基丙烯酸缩水甘油酯(PLA-g-GMA)作为增容增韧组分;然后,通过熔融共混法制备了PLA-g-GMA/Ope-POSS/PLA复合材料;最后,通过对复合材料形态结构、热性能、力学性能及疏水性的表征分析了Ope-POSS纳米粒子及PLA-g-GMA的加入对PLA复合材料性能的影响。结果表明:PLA-g-GMA的加入对Ope-POSS纳米粒子具有良好的增容效果,可使得Ope-POSS纳米粒子在复合材料中均匀分散;随着良好分散的Ope-POSS纳米粒子的数量增加,PLA复合材料的强度…
Oxidación a alta temperatura de un acero ASTM A335 P92 en contacto con una mezcla de sales de K 2 SO 4 -NaClHigh temperatures oxidation of ASTM A335 P92 steel in an molten salts of K 2 SO 4 -NaCl
The aim of this work is the synthesis, structural characterisation and study of the physical properties of oxides based on GdBaCo2O5+δ for being used as cathodes in solid oxide fuel cells (SOFCs). We have studied the effect of the substitution of different transition-metal atoms by Co in the GdBaCo2O5+δ compound. In p…
Systematic X-ray absorption studies of iron-based superconductors have shown that the substitution of iron by other transition metals does not introduce carriers to iron 3d states. The new results call into question the prevailing carrier doping picture of transition metal substitution in iron-based superconductors.
针对Fe-6．5％Si合金热轧板焊接接头易萌生裂纹的问题，研究了不同氩弧焊工艺对焊接接头显微组织和力学性能的影响规律．研究表明：不使用填充焊丝的TIG焊不适合Fe-6．5％Si合金热轧板焊接，因在焊缝内出现大量显微裂纹；使用工业纯铁焊丝的MIG焊实现了Fe-6．5％Si合金热轧板的良好连接，焊缝表面连续、鱼鳞纹均匀，焊缝内无显微裂纹．稀释硅浓度是改善焊缝区组织和力性的有效方法．优化工艺下的焊接接头在500℃拉伸延伸率5．5％，抗拉强度280MPa，满足Fe-6．5％Si合金板带制造过程中的温轧工艺要求．
Metal detectors have been used for a long time for treasure hunting, security screening, and finding buried objects such as landmines or unexploded ordnance. Walk-through metal detection (WTMD) portals are used for making sure that forbidden or threatening metallic items, such as knives or guns, are not carried into se…
New release to fix incomplete upload to PYPI.
The surface stress effects on electro-thermo-mechanical linear vibration of triple-walled boron nitride nano tube embedded in an elastic medium conveying fluid flow using nonlocal Euler-Bernoulli beam theory for clamped-clamped boundary condition are investigated. The kinematic energy of fluid and nano tube, strain en…
Abstract Etching of hydrogenated amorphous carbon (a-C:H) films in 0.1 M nitric acid was evaluated using surface plasmon resonance at the applied voltages of 0.0, −1.0, and 1.0 V. The etching rates of the a-C:H films as functions of the applied voltages and etching duration were obtained to be 0.0368 (at 0.0 V), 0.011…
Propriétés optomécaniques, vibrationelles et thermiques de membranes de graphène suspendues Le but de la Nano- Opto- Mécanique et Electronic à base de graphène est d'utiliser des membranes de graphène en suspension comme blocs de construction pour aborder le couplage entre l'optique, la mécanique et l'électronique dan…
The spatial distribution of electric charges forming a square well potential has been analyzed. It is shown that this potential is created by two concentric spheres with a double layer of charges. A C60 shell potential has been calculated under the assumption that it is formed by the averaged charge density of a neutr…
Semiconductor surfaces with narrow surface bands provide unique playgrounds to search for Mott-insulating state. Recently, a combined experimental and theoretical study [Phys. Rev. Lett. 114, 247602 (2015)] of the two-dimensional (2D) Sn atom lattice on a wide-gap SiC(0001) substrate proposed a Mott-type insulator dri…
ABSTRAC \nIt research has been done about determination of X-ray effective energy at radiotherapy linear accelerator. This research used copper plates which had a different thickness with determination of Half Value Layer for each energy. The result of this research show that the energy 6 MeV are retrieved effective e…
Wilson et al. raisea number of issues that, according to their opinion, require explanation. [...]
Particle tracking results demonstrating the mechanical properties of a 3D printed microscope stage, together with the Python scripts that performed the experiments and analysed the data to produce plots in the paper. Measurements were taken in the Cavendish Laboratory, Cambridge in 2015. Further details are provided i…
Due to increasing comple xities of raw materials for base metals production the conventional pyrometall urgical processes are challenged. To make the appropriate modifications, thorough evaluations of the thermal stabilities of phases and phase assemblages which are commonly encountered in these processes are essentia…
This specification defines essential criteria for all material combinations in boron-based neutron-absorbing material systems used for nuclear spent fuel storage racks in nuclear light water reactors, spent-fuel assemblies, or disassembled components. The boron-based neutron absorbing materials normally consist of met…
It is well known that amorphous solids display a phonon spectrum where the Debye $\sim \omega^2$ law at low frequency melds into an anomalous excess-mode peak (the boson peak) before entering a quasi-localized regime at higher frequencies dominated by scattering. The microscopic origin of the boson peak has remained e…
ABSTRACT Iron (Fe) is an essential micronutrient for plants as it takes part in major metabolic pathways such as photosynthesis and respiration and is linked to many enzymes that accomplish many other cellular functions (DNA synthesis, nitrogen fixation, hormone production). Fe deficiency reduces crop yields worldwide…