Materials Literature
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Ce travail est consacre a l‟etude de la stabilite photochimique de nanocomposites polymere / argile en vue de leur insertion dans un systeme multicouche organique / inorganique pour l‟encapsulation des cellules solaires organiques. L‟objectif est d‟obtenir des films de nanocomposites polymere / argile flexibles, trans…
研究了时效对Cu-0.15Ag-0.1Fe合金的显微硬度、抗拉强度和电导率的影响。结果表明：随着时效时间的增加和时效温度的升高,Cu-0.15Ag-0.1Fe合金的显微硬度和抗拉强度先急剧增加随后逐渐降低;合金经960℃×1 h固溶,在500℃时效2 h后可获得较好的显微硬度和抗拉强度,分别为124 HV和442 MPa;当时效时间增加到6 h,可获得较高的电导率,达到82.5%IACS。通过透射显微镜分析,该合金中的强化相是γ-Fe粒子,与以前报道的Cu-Fe系合金的析出强化相是α-Fe不同。
We have prepared all-biopolymer nanocomposite films using lignin as a filler and cellulose triacetate (CTA) as a polymer matrix, and characterized them by several analytical methods. Three types of lignin were tested: organosolv, hydrolytic and kraft, with or without acetylation. They were used in the form of nanopart…
The structure of two-component CunAu144-n nanoclusters of various compositions and 145-atom copper and gold clusters has been studied by molecular dynamics method. The adding of 145th atom leads to the formation of more ordered structure. The findings show distribution of gold and copper atoms in clusters, as well as…
The effect of aluminum and silicon-containing compounds of titanium-boron system on technological properties of SHS-compacted targets for arc-PVD has been investigated. The charge mixture of the working layer should be prepared based upon the sufficient content of titanium matrix in the synthesis products to obtain de…
ISBN 978-1-84821-231-2
Se evaluó el comportamiento microestructural del acero martensítico AISI 1045 en los pasadores de las esteras de rodaje de los equipos de laboreo minero de la industria cubana del níquel, con el fin de esclarecer las causas de la deformación de los pasadores. Se realizaron ensayos con pasadores nuevos y luego de retir…
En este trabajo se realizó la síntesis de espumas rígidas de poliuretano utilizando un macropoliol sintetizado a partir de aceite de castor y poliglicerol, se optimizó mediante un análisis de superficie de respuesta, empleando un diseño factorial 32, los factores evaluados fueron: cantidad de agua y de ácido tartárico…
Приведены результаты теоретических исследований напряженно-деформированного состояния (НДС) двухслойных аэродромных покрытий жесткого типа. Применительно к задаче изгиба тонких плит на упругом основании, к классу которых относятся аэродромные покрытия жесткого типа, установлено завышение численными моделями НДС распре…
Abstract: The problem of plastic spin is phrased in terms of a notion of mechanical equivalence among local relaxed configurations of an elastic/plastic crystalline solid. This idea is used to show that, without further qualification, the plastic spin may be suppressed at the constitutive level. However, the spin is c…
Estimating individual radiation risks in accordance with the international standards is suggested to contribute to the improvement of the effectiveness of social protection measures for the personnel of the State Corporation Rosatom covered by individual dosimetry monitoring. Target indicators for the personnel manage…
The results of investigation of light-duty gas engine running on natural gas and hydrogen mixture has been given. The mathematical model of combustion process with variable Vibe combus-tion factor for this engine type has been specified.
Phase equilibria and critical phenomena in cut 1 of the quaternary system water – pyridine – butyric acid – potassium iodide whose constituent ternary liquid system had a closed binodal curve were studied by means of the visual-polythermal method within 5–60°C. We have determined the temperature dependence of the solu…
É crescente o interesse nos compósitos poliméricos reforçados com fibras vegetais curtas em substituição às fibras de vidro, pois as fibras naturais provêm de fontes renováveis, não são abrasivas aos equipamentos de processamento, são biodegradáveis, e possuem baixa densidade comparada às fibras de vidro. Elas apresen…
Por primera vez se desarrolló la síntesisy caracterización (IR, UV, RMN-1H,31P, 19F) de un nuevo cuadrado supramolecular[3] mediante el auto-ensamblajedel complejo [Pd(CF3SO3)2(Dppe)] [1] yel ligando orgánico 4,4´-Bipiridina [2].Se evidenció la obtención de [3] en mezclacon otra especie supramolecular [4],asignada com…
In work characteristics of levels of an irradiation and radiating risks are given at contact to ionizing radiation sources.
Lophiostoma and Lophiotrema share several morphological and ecological features. They have been regarded as closely related genera within the family Lophiostomataceae, but their morphological circumscriptions have been uncertain. To clarify the generic definitions of Lophiostoma and Lophiotrema, we conducted phylogene…
Dependences of parameters of durability of the plaster knitting materials received on a basis phosphogypsum, from the temperature of heat treatment and particle size distribution are established.
Carbon nanotube is one of the nanotechnology that applicated in a variety of science such as electronics, chemistry and etc. In this research staked with system Catalytic Chemical Vapour Deposition (CCVD) process to syntheses Carbon nanotubes from acetylene gas using Co/Al2O3 and Fe/Al2O3 catalysts with catalyst heavy…
采用在Al2O3基板上喷涂YSZ和ZTA料浆，经常压烧结制备YSZ／ZTA／Al2O3层状复合材料。SEM显微结构分析表明，各层结合紧密，且有一定的相互渗透。抗热震性试验表明，烧结温度对试样的抗热震性能影响显著。力学性能测试表明，试样的抗弯强度随着温度的升高而增大，抗热震后残余强度比例随着温度升高而降低。ZTA涂层存在对提高YSZ／ZTA／Al2O3层状复合材料具有积极的作用。