Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The machinability of two prehardened mould steels, one continuously-cooled and one quenched and tempered, is compared in terms of cutting temperature, cutting force and tool life. Both materials have a hardness of ∼40 HRC which is a typical hardness for prehardened mould steels. The results of machinability tests are…
Various schematic solutions for implementing a hydrogen cycle on the basis of thermal and nuclear power stations are discussed. Different approaches to construction of cooling systems for the combustion chambers used in hydrogen-oxygen steam generators are described. An example of solution is given in which the combus…
This work describes a method for the deposition of Au nanoparticles on glass plates (Au-glass). An electroless metal plating technique was extended to the Au nanoparticle deposition. The technique consisted of three steps that took place on the glass plate: (1) adsorption of Sn2+ ions, (2) deposition of metallic Ag nu…
Abstract Surgery involves the repair, resection, replacement, or improvement of body parts and functions and in numerous ways, surgery should be considered human engineering. There are many areas in which surgical materials could be improved, but surgeons are generally unaware of materials available for use, while mat…
Uridine (U) imino proton chemical shifts, measured in the slow hydrogen-bond exchange regime at low temperatures in a freonic solution, show that electron-withdrawing 5-bromo and 5-fluoro substituents on the uracil base strengthen NHN hydrogen bonds in (X)U·A base pairs formed by the free nucleosides. Whereas the halo…
Hydroxypropylsulfanyl groups of metal-free and metallo-porphyrazines (M=2H, Mg, Cu, Zn, or Co) have been prepared by the esterification with a carboxylate such as 1-naphthoic acid. The symmetrically functionalized porphyrazines with eight ester units were soluble in common organic solvents such as CHCl3, CH2Cl2, tetra…
Abstract The previously reported amphiphilic block copolypeptide, poly(l‐lysine)60‐block‐poly(l‐leucine)20 (K60L20), is able to form vesicles that can be manipulated to different sizes and be prepared in large quantities. This study expands upon that work by varying the length of the hydrophobic segment to optimize th…
This article reports new results of theoretical and numerical studies of spectral features of the collision-induced hyper-Rayleigh light scattered in dihydrogen-noble gas (H2-Rg) mixtures. The most massive and polarizable scattering supermolecules with Rg = Kr and Xe have been added to the previously considered system…
In this study, reduced forward voltage and improved light output power of GaN-based vertical light-emitting diodes (VLEDs) incorporating single-walled carbon nanotube (SWNT)-networks is reported. The SWNT-networks were directly formed on a roughened (textured) n-GaN surface via a solution-processed dip-coating method.…
PS-b-PMMA block-copolymers systems synthesized on an industrial scale, and satisfying microelectronic’s requirements for metallic contents specifications, are studied in terms of integration capabilities for lithographic applications. We demonstrate in particular that this kind of polymer can efficiently achieve perio…
Abstract Peciko is one of the giant gas fields located in the Mahakam area, Indonesia, operated by Total E&P Indonesie. Since start up in December 1999, until May 2012, the average wellhead pressure and temperature of its wells have decreased from 150 barg to 20 barg and from 95 °C to 60 °C, respectively, while the av…
Abstract Coiled tubing has been traditionally characterized by its mechanical properties in order to guarantee that the structural response of the tubing is uniform and satisfies current standards along its full length. Also the tubing is generally fatigued tested in order to characterize its responses under simulated…
An overview of electron beam tool configurations is provided. The adoption of multi-beam writing is mandatory in order to fulfill industrial needs for 11nm HP nodes and below. IMS Nanofabrication realized a 50keV electron multibeam proof-of-concept (POC) tool confirming writing principles with 0.1nm address grid and l…
Electron paramagnetic resonance (EPR) spectroscopy was used to study Cu(II) dynamic behavior in a doped biological model crystal, bis(L-histidinato)cadmium dihydrate, in order to gain better insight into copper site stability in metalloproteins. Temperature-dependent changes in the low temperature X-band EPR spectra b…
The effects of microstructure and texture on the toughness anisotropy of two API-X70 pipeline steels were investigated. One steel contained no nickel (0Ni) and the other contained 0.3 wt pct nickel (0.3Ni). Charpy V-notch impact testing was conducted on plate samples for both steels in three directions: longitudinal (…
This paper presents an approach to minimize the harmonics contained in the output of a single phase half bridge inverter. With a view to reducing harmonics an LC low pass filter is used which blocks the harmonics and undeniably passes almost sinusoidal output at the output terminal. An illustration of Fourier Transfor…
Topological behavior can be masked when disorder is present. A topological insulator, either intrinsic or interaction induced, may turn gapless when sufficiently disordered. Nevertheless, the metallic phase that emerges once a topological gap closes retains several topological characteristics. By considering the self-…
Abstract Drilling bit is the main tool which performs the task of grinding and cutting through the formation. This causes cracking, spallation and delamination of the drilling bit and it needs to be replaced periodically depending upon the formation conditions. This replacement of the bit require stripping the drill s…
Abstract High pressure electroluminescence (EL) measurements were carried out on blue and green emitting InGaN‐based light emitting diodes (LEDs). The weak pressure coefficient of the peak emission energy of the LEDs is found to increase with increasing injection current. Such behaviour is consistent with an enhanceme…
We report on the comparison of the resistance switching properties and kinetic behavior of Cu doped Ge0.3Se0.7 solid electrolyte based dual layer memory devices integrated with asymmetrical (Pt and Cu) and symmetrical electrodes (only Cu). In spite of the fact that the observed resistance switching properties and its…