Materials Literature
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Captured in the darkness of July 18th on a sandy beach in South Carolina was a native of Adams County. Stewart W. Woods, born in Heidlersburg around 1836, found himself in the hands of the rebels, among a handful of his compatriots in the 54th Massachusetts. The fighting of Woods' war was over and his fate was unclear…
The study of the kinetic characteristics of the thermal decomposition of oxalate and their thermal stability is an important step towards creating technology powders of metals, oxides, and composite materials based on them. Oxalates, Cu, Ni, Co, obtained under the infl uence of ultrasonic treatment, have a sub-micron…
In this article, novolac epoxy was functionalized using p-hydroxybenzoic acid as pendent groups, which offered weak acidic environment and were cured with methyl etherified amino resin (HMMM). Its chemical structure was characterized by Fourier transform infrared (FT-IR), 1H nuclear magnetic resonance (1H NMR) and dif…
We demonstrate a new method that can simultaneously improve the strength and toughness of the glass fiber-reinforced bismaleimide–triazine (BT) resin composites by using polyethylene glycol (PEG) to construct a flexible bridge at the interface. The mechanical properties, including the elongation, ultimate tensile stre…
Synthesis of Fe-Co nanopowders (NP) is researched. NP are prepared by reduction of metal precursors in water solution with hydrazine-hydride, including the stage of intermediate preparation – mixed metal hydroxides (MMH). Phase and crystalinity structure of intermidiates and NPs are investigated by method of X-ray dif…
The article shows the relevance of the movement of wheeled vehicles in the Far North of the Russian Federation and equivalent areas on temporary roads – winter roads. It is concluded that the parameters of the support base needed to evaluate of passability are defi ned. The criterion of effi ciency of vehicles using i…
IV Abstract In this thesis, factors affecting the electronic energy levels and optical absorptions of poly(3-hexylthiophene) (P3HT) are systematically studied, including the coplanality, the introduction of fused ring on the P3HT main chain and the strong electron withdrawing cyano (-CN) side group. All the polymers a…
uO nanowire is an important one-dimensional semiconductor nano-material which can be used in field effect transistors, photovoltaic cells, field emission nanodevices, and chemical and gas sensors. In this paper, CuO nanowires are synthesized by heating copper substrates in air, and the CuO nanowire is assembled on two…
The lignocellulosic based molecule, γ-Valerolactone (GVL), has been identified as a promising platform chemical because, in addition to serving directly as a fuel additive or green solvent, it has a number of derivatives with applications towards fuel additives, high value chemicals, polymer precursors, or directly as…
ME composites were prepared by mixing ferroelectric (XBa0.8Pb0.2TiO3) and ferrite ((1-X)CoFe2O4) compositions (where X = 0, 0.55, 0.70, 0.85 and 1.0) using ceramic method. X-ray analysis confirmed single phase formation in X=0 and X=1 compositions, whereas the presence of both phases is shown in X=0.55, 0.70 and 0.85…
The resistance relaxation in Au/SrTiO3/Au sandwiches with bipolar resistance switching has been investigated by the low frequency analysis. The power spectral density of the conducting current fluctuation in the high resistance state and the low resistance state shows 1/f behaviors. By contrast experiment, the low fre…
A highly controlled synthesis of single-walled carbon nanotubes requires a clear understanding of the mechanisms involved. However, understanding the role and mechanism of carbon diffusion and dissolution during chemical vapor deposition synthesis still remains a challenge. Our contribution addresses this issue by exa…
Organic solar cells bear the potential to develop a long-term technology that is environmentally clean and economically promising for large-scale power generation. Thanks to higher absorption coefficient, organic materials can be incorporated as thin films in organic photovoltaic (OPV) devices leading to a 10-fold red…
研究了不同退火温度和应力-应变循环次数对Ti—Ni—Cr形状记忆合金超弹性的影响。通过实验，采集了在退火温度和应力-应变循环次数共同作用下的Ti-Ni．Cr合金的残余应变和能耗值，采用BP神经网络方法，对其进行了分析预测。预测结果表明，使用BP神经网络方法，能够很好的预测Ti-Ni-Cr合金的超弹性。
The important trend of preparation sciences and technology research of low dimensional nanomaterials is to strengthen the control engineering research, including size, shape, surfaces, microstructure control. There are three most representing one-dimensional nanostructures that are being actively studied in nanotechno…
Figure 7. XFEL fluence dependence of the ion yields for Xen + (n = 8, 12, 14, 16, 18 and 20). Closed circles with the error bars depict the experimental results and solid lines depict the theoretical results. Lines with slope p = 1, 2, 3, 4 and 5 are also shown as broken lines to guide the eye. Abstract We have invest…
It has been observed that quinazolinespirohexadienone (QSHD) photochromes form two distinct long-wavelength (LW) products upon photochemical- and electrochemical-induced isomerization from the common short-wavelength (SW) form. It has been proposed that the electrochemical path (forming “eLW”) proceeds through the one…
Materials, objects and processes found in nature functions from macro-scale to the nanoscale. \nBio-inspiration or biomimetics is a tool to mimic these natural objects to develop \nfunctional materials which provide desired properties. There are a large number of examples \nfound in nature such as plants, bacteria, la…
对合成气经二甲醚制汽油两段等压反应系统中的ZSM鄄5 分子筛催化剂进行原位水热处理,研究了不同温度下水蒸气处理ZSM鄄5 分子筛的结构、表面酸性及催化反应性能。XRD、XRF、BET、NH3 鄄TPD 和TPO 等表征手段表明,水热处理温度为400 益时会使ZSM鄄5 分子筛大部分非骨架铝脱除,酸中心数量减少,比表面积增加,提高了催化剂的活性及产物选择性。 \n
Import 26/06/2013