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An aircraft radome usually refer to radar transparent, dome-shape structures which protects radar antennas on aircraft from aerodynamic loading, weather as well as impacts from bird strikes.
Current composite material using high strength fibers such as glass fiber, carbon and aramid are commonly used in aerospace structures.
Introduction A radome usually refer to radar transparent, dome-shape structures which protects radar antennas on aircraft from aerodynamic loading, weather as well as impacts from bird strikes.
The hemicellulose, lignin and pectin collectively function as matrix and adhesive, helping to hold together the cellulosic framework structure of the natural composite fiber.
Fuaad: J Reinforced Plast Compos, Vol. 26, No.2/2007 [19] K.Oksman, M. krifvars, J.F.Selin: Compos Sci Technol 63 (2003) 1317-1324 [20] B.Bax, J.Mussig: Compos Sci Technol 68 (2008) 1601-1607 [21] Q.Liu, M.Hughes: Compos: Part A 39 (2008) 1644-1652 [22] C.K.Hong, I.Hwang, N.Kim, D.H.Park, B.S.Hwang, C.Nah: Journal of Industrial and Engineering Chemistry 14 (2008) 71-76 [23] D.Plackett, T.L.Anderson, W.B.Pedersen, L.Nielsen: Compos Sci Technol 63 (2003) 1287-1296 [24] A.Bourmaud, C.Baley: Polymer Degradation and stability 92 (2007) 1034-1045 [25] T.Yuanjian, D.H.Isaac: Compos Sci Technol 67 (2007) 3300-3307 [26] P.A.Fowler, J.M.Hughes, R.M.Elias: Journal of the Science of Food and Agriculture 86:1781-1789 (2006) [27] G.A.E.Crone, A.W.Rudge, G.N.Taylor: IEE Proc, Vol. 128, Pt.

It was observed that the region brazed with only filler metal had a microstructure consisting of fully eutectic and dendrite structures.
As shown in the figure, the brazed region consisted of a dark gray phase forming a dendrite structure marked as p, binary eutectic (marked as b) forming a lamellar structure and ternary eutectic marked as t, respectively.
Fig. 2 (b) is the magnified micrograph of the area marked as c in Fig. 2 (a), which was divided into c1 and c2 forming a eutectic structure.
Therefore, the region brazed with mixed powder could not observe to the dendritic structure because the additive plays a nucleation site during brazing.
Considering that there is little difference in the base chemistry of theses brazed regions, poor creep rupture lives of the 50µm (Cr, W)B Ni3B-Ni eutectic IN738 additive Tensile direction wide-gap brazed regions can largely be attributed to the presents of the (Cr, W)B and Ni3B-Ni eutectic.

It provides a package-like composite for the preparation of cermet with a wrapped structure and the thermal conduction mechanism of the controlled cermet.
Therefore, a special powder with a wrapped structure is prepared by using aluminum-coated aluminum powder to investigate whether the problem of interfacial wettability can be solved.
In this paper, the alumina particles are uniformly dispersed around the aluminum spheres to present the enveloping structure through the ball milling, and then the coated alumina/aluminum cermet composite powder is analyzed by various characterization techniques to develop a high-performance metal with a three-dimensional network structure, which provide the raw materials basis for high-performance ceramic materials.
The impact and extrusion were deformed, and it was during this process that the hard and angular alumina powder was pinned and wrapped to obtain an alumina/aluminum composite powder with a coated structure.
It provides a package-like composite for the preparation of cermet with a wrapped structure and the thermal conduction mechanism of the controlled cermet.

Fig. 1 (left) Structure of an elementary plant fiber (cell) [8] and (right) schematic diagram of the physical structure of a semicrystalline cellulose fiber [9].
Lignin is second most abundant macromolecular material affecting Earth´s surface and is based on a phenylpropanoid monomer structure [10].
Youngblood, Cellulose nanomaterials review: structure, properties and nanocomposites, Chem.
Müssig, Industrial applications of natural fibres: structure, properties and technical applications, vol. 10.
Kaur, Cellulose fibers: bio-and nano-polymer composites: green chemistry and technology, Springer, (2011)

We investigated the effect of the reaction temperature on crystal structure, particle size and photo-, electro-luminescence properties.
Here, we investigated the effect of the reaction temperature on crystal structure, particle size and photo-, electro-luminescence properties.
Crystal structure of ZrO2:Eu transformed from amorphous to tetragonal ZrO2 as same as that of the Tb - Zr system.
We think that the cause of color changes is due to variation of coordination of Tb ion in ZrO2 crystal structure.
Materials Chemistry Forum MC7: Functional Materials for the 21st Century, UK (2005) p129.

Choice of materials and the overall design including the building structure and the enclosures, its energy systems, the reuse of resources and the minimum waste production are discussed all over the world.
We are promoting materials with adjustable properties generated by nano-technology and influenced by the latest discoveries of physics and chemistry: sealing membranes and films with adjustable properties depending on the season, performant membranes and highly efficient vacuum insulation panels Solar strategies.

The refractive index and the deposition rate were estimated from ellipsometric data and the film chemical structure was studied by FTIR analysis technique.
Kuo, Journal of Physics and Chemistry of Solids 69 (2008) 555 - 560 [7] T.

METHODS: A series of flavonoids were isolated and purified by various chromatographic techniques and their structures were elucidated by physicochemical and spectral data.
The voucher specimen (collection No. 07-1005) was deposited in the Department of Natural Medicinal Chemistry, China Pharmaceutical University. 2.3 Extraction and Isolation The air-dried whole plant (3.5kg) was finely powdered and extracted with 95% EtOH at 60℃.

As determined by BET studies, the catalysts have type IV adsorption isotherm which indicated mesoporous structure.
It revealed a typical type IV sorption behavior, representing to the mesoporous structure as show in Fig.1.
But again, we do not observe this structure in our samples.
Dai, Influence of calcination temperature on the structure and catalytic performance of CuOx-CoOy-CeO2 ternary mixed oxide for CO oxidation, Appl.
Yue, Preferential oxidation of CO in excess H2 over CeO2/CuO catalyst: Effectof calcination temperature, J. of Natural Gas Chemistry 21(2012)513–518.

Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences, Leninsky Avenue 29, 119991 Moscow, Russia 2School of Chemistry, The University of Manchester, Oxford Road M13 9PL Manchester, UK a*putintseva@ips.ac.ru, bBoril@ips.ac.ru, chalex@ips.ac.ru, drichard.kirk@manchester.ac.uk, ePeter.Budd@manchester.ac.uk, favolkov@ips.ac.ru Keywords: PIM-1, polymer of intrinsic microporosity, thin-film composite membrane, gas separation, carbon dioxide capture Abstract In this work, PIM-1 thin film composite membranes supported on PAN were developed.
The influence of PIM-1 concentration and nature of solvent stabilizer on the structure and gas separation properties of TFC membranes were studied.
Introduction Polymers of intrinsic microporosity (PIMs) is a class of glassy polymers, that possess a continuous network of interconnected intermolecular voids due to their rigid contorted structure [1].
Yampolskii et al. investigated the effect of low molecular mass substances, including ethanol, on the PIM-1 structure.
The goal of this investigation is to obtain TFC membranes for CO2 and N2 separation and to study the effect of chloroform stabilizer and PIM-1 concentration on the structure and gas transport properties of the resulting membranes.