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., Rostov-on-Don, 344022, Russia adiatomit_kvd@mail.ru, bskrudge_k@mail.ru, czvoleg@list.ru, dkeramik_kira@mail.ru Keywords: paving clinker, opoka, burning, grain structure, mineralizer, water absorption, strength.
Opoka is a vast group of rocks, the characteristics of which are as follows: predominance of opal-cristobalite silica in its composition, fine porous structure, low average density (1200-1600 kg/m3), low strength and poor soaking capacity.
Bratskii, Material structure and ceramic properties of a clay opoks, Engineering Bulletin of Don.
Savel'ev, Physical chemistry of silicates and other refractory connections, Higher school, Moscow, 1988

The aerogel exhibits 3-demensional network structure, which contains 60-70 spherical solid clusters and pores below 50 nm between them.
Other peaks at 800 and 450 cm-1 corresponded to the bending vibration of Si-O bonds in a ring structure.
Interestingly, these ring structure bands completely disappeared as the ZrO2 content is up to 75wt%, which seemed to suggest that all or most of the Si-O ring structure have been destroyed at this stage.
After calcinated at 800°C and 1000°C, the structure is different from that calcinated at 500°C.
The diffraction line of ZrO2 phase appears, but all the peaks are weak indicate the crystalline structures of the aerogels are not complete.

Drawing-induced Dispersion of Nanoparticles and Its Effect on Structure and Properties of Thermoplastic Nanocomposites Wen Hong Ruan1,2, Min Zhi Rong 2, Ming Qiu Zhang 2 1 PCFM Lab, OFCM Institute, School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, P.
Since TEM observation confirms that the extended structure of nanopartilce agglomerates can be aligned in SiO2-g-PBA/PP (Fig.
Interfacial interaction, crystalline structure and morphology of the matrix polymer, etc. are believed to be the main influencing factors.

., Grozny, Chechen Republc, 366002, Russia akniiran@mail.ru, bs.murtazaev@mail.ru, cmadina salamanova@mail.ru Keywords: non-clinker binders, alkaline activation, structure, fine-grained concrete, quartz sand, sandstone waste, limestone waste, volcanic tuff, siliceous marl.
Of course, the proposed developments cannot fully meet the requirements for binders used in construction of highly loaded buildings and structures, but they can replace Portland cement in structures with a compressive strength of up to 60 MPa.
For volcanic tuff, higher grindability can be explained by the quartz of the greenschist degree of metamorphism with defective structure content; their specific surface area has changed from 40 to 860 m2 / kg.
Compositions and properties of fine-grained concretes based on the binders with alkaline activation Number of compound Consumption of materials, kg per 1 m3 Density of concrete, kg / m3 Compressive strength, MPa High dispersible powders Fractionated sand Na2SiO3 NaOH Na2SiF6 7 28 1 520 1700 15 1.3 8.7 2240 12.3 26.2 2 520 1700 15 1.3 8.7 2250 32.1 46.5 3 520 1700 15 1.3 8.7 2246 27.6 40.1 4 520 1700 15 1.3 8.7 2241 10.4 22.9 5 520 1700 15 1.3 8.7 2235 6.5 17.4 Summary It has been established by investigations that in the contact zone there is a sufficiently strong fusion of particles of binder and quartz sand, the surface does not contain defects in the form of growths or cracks, irregularities of various shapes and sizes are present, and individual particles have a needle-fibrous, glassy structure, increased activity of astringent.
Chemistry and applications, Saint-Quentin: Institute Geopolymer, 2008

., 00-908 Warsaw 49, Poland. 2 Institute of Catalysis and Surface Chemistry PAS, Niezapominajek 8 St., 30-239 Cracow, Poland.
The phase structure of the surface products after catalysis was examined by X-ray diffraction using a Seifert 3003 diffractometer with CuKα radiation.
For both cases of material structures, we obtained carbon nanofibres much smaller than those reported in the literature [5,6].
The metal-like nanoparticles were found to be nanoparticles of pure nickel built in a carbon nanofibre structure.
The methanol conversion to H2 and CO over flat lustrous Ni3Al foil surfaces begins at about 280O C for a microcrystalline substrate structure and at about 330 O C for a nanocrystalline structure. 2.

XRD patterns indicate that the SrWO4 mesocrystals present a scheelite-type tetragonal structure.
Introduction Morphology-controlled synthesis of inorganic materials of scheelite-type (ABO4; A = Ca, Sr, Ba, Pb; B = Mo, W) with well-defined shapes is technologically interesting and an important goal of modern materials chemistry due to the chemical and physical properties of nano- and microcrystals depending not only on its composition, but also on its structure, phase, shape, size and size distribution [1-6].
All the diffraction peaks can be indexed as a pure tetragonal phase of SrWO4 with a scheelite-type structure and be consistent well with the reported data (JCPDS: 8-0490).
The observed lattice spacings of 0.32 and 0.24 nm correspond to the (112) and (211) planes of the tetragonal crystal structure of SrWO4, respectively.
The corresponding SAED patterns (inset of Fig. 2f) indicate the single-crystalline nature and the scheelite structure of the nanorod.

China axuyanjing1223@hotmail.com; bonlyhope123@126.com Keywords: Alpha amylase; Bacillus licheniformis; Acid stability; Characterisation; Structure analysis.
Besides, the three-dimensional structure was analyzed to elucidate the mechanism of acid stability more sufficiently.
Three-dimensional structures analyses.
Wiegand: Structure Vol. 6(1998), p. 281-292 [17] J.
Kyte : Mechanism in protein chemistry (Garland Science, New York 1995).

The morphology, structure and luminescent properties of the products were characterized and studied.
The results show that all the products are pure LaPO4 with hexagonal structure.
The sample C3 shows regular spherical structure.
The results indicate that the products obtained are pure LaPO4:Eu3+ nanocrystals with hexagonal structure without any other phases.
Journal of physical chemistry.

Synthesis and Thermoelectric Properties of Half-Heusler Zr-Ni-Sn Alloy Processed by Mechanically Alloying and Hot Pressing Il-Ho Kim 1,a, Joon-Chul Kwon1,b, Young-Geun Lee1,c, Man-Soon Yoon1,d, Sung-Lim Ryu1,e, Whan-Gi Kim 2,f and Soon-Chul Ur1, g* 1 Department of Materials Science and Engineering / RIC-ReSEM, Chungju National University, 72 Daehangno, Chungju, Chungbuk 380-702, Korea 2 Department of Applied chemistry / RIC-ReSEM, Konkuk University 322 Danwol-dong, Chungju, Chungbuk 380-701, Korea a ihkim@cjnu.ac.kr, bric@cjnu.ac.kr, cyoglee@cjnu.ac.kr, d msyoon@cjnu.ac.kr, eslyoo@cjnu.ac.kr, f wgkim@kku.ac.kr, g*scur@cjnu.ac.kr Keywords: Half-Heusler; Thermoelectric; Mechanical Alloying.
Introduction Recent search for novel thermoelectric materials has revealed a new class of compounds with half-Heusler structure as good candidates for higher performance thermoelectric conversion [1-2], since the structure was first found [3].
Candidates with this structure for the investigation would be categorized into the combination of (Ti/Zr/Hf)(Co/Ni/Pt)(Sb/Sn/Bi) [4-6].
ZrNiSn belongs to a half-Heusler structure and it is expected to be a promising thermoelectric material having relatively high figure of merit value, especially for power generation [4-6].
Doping on this system was found to be effective in electrical property enhancement via band structure forming, and the substitution on the Zr and/or Ni site were shown to be decrease in thermal conductivity via point defect phonon scattering [6-8].

Facile synthesis of LnPO4: Tb (Ln = Ce, Gd) green emission phosphors at specific temperature (80 or 680 oC) Qianming Wang, Zhengyang Zhang, Yan Li School of Chemistry and Environment, South China Normal University, Guangzhou 510006,P.
We have proved the above crystal growth structures were controllable and predicable based on the current conditions.
Ref. [5] shows the hexagonal phase emerges at 88 oC but the crystalline structure is not well established.
XRD patterns in this report could be ascribed to hexagonal structure which is in agreement in JCPDS cards (Fig. 1).
After all the precipitated powders were sintered at 680 oC in air for three hours, the hexagonal structure completely transforms into the monoclinic phase structure for the resulting materials (Fig. 2).