Materials Literature
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Size-controlled magnetite nanoparticles (MNP) with several dozen to several hundred of nanometers (nm) were prepared for hyperthermia of cancer. Nanoparticles of single-phase magnetite, as revealed by X-ray diffraction and magnetic property measurement, were synthesized by mean of an oxidation-precipitation method wit…
-doped nanofibers with an average diameter of 500 nm were in situ synthesized by electrospinning and calcination in reduced ambience. X-ray diffraction results confirmed that the nanofibers were of the anorthite phase. An intense blue emission due to the transition of ions was observed in the nanofibers. The emission…
To explore the flame spread mechanisms over the solid fuel sheets, downward flame spread over vertical polymethylmethacrylate sheets with thicknesses from 1.75 to 5.75 mm have been examined in the quiescent environment. The dependence of the flame spread rate on the thickness of sheets is obtained by one-dimensional h…
This study describes an approach towards the detection of carbon nanotubes in scanning electron microscopic images. It is designed to work in a real-time environment for automated nanofabrication. Main difficulties are the high level of image noise and the occurrence of debris objects. A descriptor derived from the pr…
Titanium silicon carbide (Ti3SiC2) possesses a unique combination of properties of both metals and ceramics, for it is thermally shock resistant, thermally and electrically conductive, damage tolerant, lightweight, highly oxidation resistant, elastically stiff, and mechanically machinable. In this research, the effect…
© 2009, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (www.ashrae.org). Published in ASHRAE Transactions 2009, vol. 115, part 2. For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE’s prior writte…
Superplastic-foamed porous ceramics containing numerous closed pores were fabricated. The bending strength of the fabricated ceramics with the smallest pores was close to half that of fully dense ones, even with a porosity of 27%. The smaller pores were introduced selectively between top and bottom surfaces. The resul…
Abstract A study of azo dye/liquid crystal mixtures in monolayers formed at air-water (Langmuir films) and air-solid substrate (Langmuir-Blodgett films) interfaces was performed. Three azo dyes with various molecular structure and two liquid crystal materials: 4-octyl-4′-cyanobiphenyl (8CB) and trans-4-octyl(4′-cyanop…
Particles of chitosan have a very polar surface, and thus they are easily wetted by water and also dissolve in acidic media. The hydroxyl and amino groups offer a high potential for grafting reactions. Aldehydes and carbonic acid derivatives were covalently grafted, preferably onto the amino groups. The reactions were…
A good dielectric layer on the GaAs substrate is one of the critical issues to be solved for introducing GaAs as a candidate to replace Si in semiconductor processing. In literature, promising results have been shown for on GaAs substrates. Therefore, atomic layer deposition (ALD) of has been studied on GaAs substrate…
Interference microscopy satisfies many of the dimensional metrology requirements for semiconductor device interconnects manufacturing by providing 3D topography maps of patterned structures with sub‐nm vertical reproducibility. Analysis of topography maps and intensity images with pattern recognition software extends…
立方的 NaYF4 :Yb3+(20%)/Er3+(1%) microspheres 被帮助 EDTA 的热水的方法综合。在 980 nm 刺激下面，紫外(4G11/24I15/2 ) ，紫(2H9/24I15/2 ) ，绿色(4F7/24I15/2， 2H11/24I15/2，和 4S3/24I15/2 ) ，和红(4F9/24I15/2 ) upconversion 荧光被观察。专心于一个 upconversion 刺激过程的激光光子的数字， n，被决定分别地为紫外、紫、绿、红的排出物是 3.89， 1.61， 2.55，和 1.09。显然， n=3.89 显示一个四光子的过程涉及占据 4G11/2 状态，并且 n=2.55…
The crystal structure of 2-amino-5-nitropyridine at low temperature was previously determined by other authors [1]. In this paper, the complementary X-ray study at ambient temperature is reported. The small differences in lattice parameters measurement in both experiments were found. The differential scanning calorime…
Ta2O5 薄电影被反应磁控管劈啪作响由快速的热退火跟随了的 DC (RTA ) 扔。表面特征，微观结构和 Ta2O5 薄电影的光性质上的劈啪作响的压力和退火的温度的影响被调查。同样扔的 Ta2O5 薄电影是非结晶的。它拿六角形的结构(在在 800 潣湲湩 ? 汧獡 ? ?獢牴瑡獥 . ? ? ǐ被退火以后的 -Ta2O5)
Summary In this work results of laboratory wear tests of specimens made of spheroidal graphite cast iron grade EN-GJS-900-2 have been presented. This cast iron is used for camshafts of FIAT cars manufacturing. The iron has been heat–treated to obtain a hardness, ranging from 37 up to 53 HRC. Dry sliding and lubricated…
ABSTRACT ：Influence of blend mode of extender oil on the properties of thermoplastic vulcanizates (TPVs), based onan ethylene-propylene-diene copolymer (EPDM) and a polypropylene (PP), was studied. The EPDM/PP TPVs were preparedin an open roll mill using two different modes in blending sequence of paraffinic oil and p…
This study aims to investigate the residual strength of sandwich composites with Al honeycomb core and carbon fiber face sheets after the quasi-static indentation damage by the experimental investigation. The 3-point bending test and the edge-wise compressive strength test were used to find the mechanical properties,…
Fatigue is essential in mechanical pulping when producing flexible paper fibers energy efficiently from stiff wood fibers. Fatigue propagation depends mainly on strain variation. The objective of the study is to determine how compressive strain is distributed between earlywood and latewood. Uneven distribution of loca…
Ferroelectric materials have been extensively studied theoretically and experimentally for many decades. Their ferroelectric, piezoelectric, pyroelectric, dielectric and electro-optical properties offer great promise in various applications such as non-volatile random access memory devices, non linear optics, motion a…
A catalyzed diesel particulate filter (CDPF) causes the progressive increase in back pressure of an exhaust system due to the loading of soot particles. To minimize pressure drop which is generated by CDPF, the filter should be regenerated when it collects a certain quantity of soot. It is important to know characteri…