Materials Literature
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Journal of Anthropology and Archaeology is a peer-reviewed international journal, which publishes original papers promoting theoretical, methodological and empirical developments in the discipline of socio-cultural anthropology.
In this paper, the torque and flux weakening performances of alternative Switched Flux Permanent Magnet (SFPM) machines are experimentally investigated and compared. Firstly, the torque and flux weakening control performances of C-core SFPM machine with/without voltage error regulation are compared. It is shown that t…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text P. R. Gill and D. G. Stork, "Hardware Verification of an Ultra-miniature Computational Diffractive Imager," in Classical Optics 2014, OSA Technical Dig…
摘要： 用传统的抛光方法很难对细长管内表面进行抛光；利用磁场控制的磁粒刷就可以较容易实现复杂管件内表面的研磨抛光。这种抛光方法是把磁性磨料和油性研磨液的混合物裹附在V形磁铁的两极，在外围磁铁的吸引下将磨料混合物压附在工件的内表面，增大磨料对内壁的研磨力，提高抛光效率。磁极端部开槽的V形磁铁在其开槽处较利于磨料的自发搅拌，使磁性磨料不断更替的对工件内表面进行抛光。通过有限元分析验证V形磁铁端部开槽对研磨压力的影响；从理论上阐述V形磁铁端部开槽后有利于实现磨料的更替，并得到较好的表面质量；最后通过对SUS304管内表面的抛光试验验证理论的正确性。
250℃の高圧水素ガス中でのSUS304鋼の水素脆化感受性を高温・高圧水素ガス中で低ひずみ速度引張試験により調査した．高圧水素ガス中において，準安定オーステナイト系ステンレス鋼であるSUS304鋼は，室温では顕著な脆化を示したが，250℃では室温のSUS316L鋼と同等の軽微な脆化しか示さなかった．水素ガスの導入温度を250℃近傍に維持できれば，圧縮水素ガスを扱う機器や配管の材料として，従来のSUS316L鋼に替えSUS304鋼の使用が可能と考えられる．
One of the degradation diagnostic methods for water tree degradation of XLPE cables is the residual charge method. In this method, a DC voltage is applied to a water tree degraded XLPE cable in order to accumulate space charges in water tree parts of an XLPE cable, and an AC voltage is applied to it in order to releas…
Over the last decade, regulations regarding end-of-life vehicle (ELV) recycling have been introduced in many countries, leading to an increased recycling rate of ELVs. However, steel scrap from ELVs is recycled as a secondary iron source in the steelmaking process with rare consideration of alloying elements loss. Con…
We have performed geometry optimizations of crystal structure and contrasted the calculated results of band structure, density of states, and permittivity of 3C-SiC for four kinds of doped supercell models: undoped, Al-doped, N-doped and Al-N codoped ones, by using the first principles plane wave ultrasoft pseudopoten…
In this program consequence of incorporating blast furnace slag on mechanical properties and durability of resulting fly ash geopolymer paste sample was investigated. The program consisted immersion of geopolymer samples having percentage blast furnace slag ranging from 10 to 20 of fly ash in a 10% magnesium sulfate s…
Nanotechnology is the process that develops novel materials at size of 100 nm or less and has become one of the most promising areas of human endeavor. Because of their intrinsic properties, nano-particles are commonly employed in electronics, photovoltaic, catalysis, environmental and space engineering, cosmetic indu…
This paper explores the effects of different wet surface treatments on low dielectric constant (low-k) materials and the consequences for the growth behavior of self-assembled monolayers (SAMs) from 11-cyanoundecyltrichlorosilane precursor on these modified substrates. Hydrofluoric acid (HF), tetramethylammonium hydro…
The penetration of IFKhAN-80 migrating corrosion inhibitor into cement stone was studied.It was found that the depth of steel reinforcement protection in concrete containing 3% NaCl (with respect to the binder) depends on the inhibitor dosage and application method and can be up to 15-20 cm.For practical use, the cons…
Residual stress is important factor for stress corrosion cracking (SCC) that has been observed near the welded zone in nuclear power plants. Especially, surface residual stress is significant for SCC initiation. In the joining processes of pipes, butt welding is conducted after surface machining. Residual stress is ge…
Bypass surgery for atherosclerosis is confronted with the absence of endothelial cells in the lumen of vascular prosthesis in humans. This imposes a risk of thrombosis. New biomaterials try to minimize surface thrombogenicity.This work provided a method to include bio-degradable polymers into vascular graft and to fac…
Corn fibre(PLA) were dyed with two disperse dyes. The corn fibres showed better dye uptake at 110 0 C.but at this temperature strength of corn fibre is decreased. In this paper Dyeing behavior of Corn fiber (PLA) was investigated. The corn fiber were evaluated for colour strength, tensile strength, elongation and fast…
The article describes a sociological problem linked to decision-making about the locality in which a deep geological repository of spent nuclear fuel and radioactive waste is to be built in the Czech Republic. The introduction explains the social situation of negotiations about the repository and identifies concerned…
Abstract Scanning electron microscopy (SEM) is employed to monitor the surface morphology of polypyrrole films (PPy) grown on different working electrodes (i.e., vitreous carbon and Au (111)) under diverse experimental conditions (i.e., dynamic vs. static potential protocols) and anion dopants (i.e., I-and F-). The mo…
To meet the increasing demands for commercial nanoparticles new eco-friendly "green" methods of synthesis are being discovered. Plant mediated synthesis of nanoparticles offers single step, easy extracellular synthesis of nanoparticles. We report the synthesis of antibacterial silver nanoparticles using leaf broth of…
Helicenes are polycyclic aromatic compounds with nonplanar screw-shaped skeletons formed by ortho-fused benzene or other aromatic rings. Since the first synthesis of helicenes was reported in 1903, helicene chemistry including their synthetic methodologies and applications has been greatly exerted. Especially in recen…
本研究では，工業的な条件で製造されるポリエチレンテレフタラートフィルムの延伸に伴う構造形成を調べるため，延伸ロールを用いて連続的に一軸延伸されたフィルムについて，小角X線散乱と広角X線回折から配向構造を評価した．その結果，90°CではSmectic相，100°Cでは結晶相に対応する回折が観察された．延伸フィルムの小角散乱像には，いずれも延伸方向とその垂直方向に加え，X方向のストリークが観察された．さらに延伸倍率300%以上では，Through像には延伸方向と直交する方向の2点像，Edge像には4点像が現れた．また，Edge像の方が，Through像よりもストリークおよび散乱の強度が強くなった．この差は，延伸倍率200%以上ではフィ…