Search results

However, conversion rate of cyclohexanone derivatives and the structure and enantioselectivity of their corresponding reductive products catalyzed by EryKR1 domains were not concluded from the report.
of 2-chlorocyclohexanone by the whole cells of E.coli BL21 (pET-eryKR1)2 Run Substrate a Reaction equationb Conversion rate (%) E.coli BL21 (pET-eryKR1)2 the control 1 2-chlorocyclohexanone 7.5 12.11 1# 41.82 66.81 a substrate concentration: 60 mM; # substrate concentration: 10 mM; b the product structure was measured by GC-MS; Table 3 Biotransformation of 2-chlorocyclohexanone and 1,2-cyclohexanedione by E.coli BL21and E.coli BL21(pET-gdh1) Run Strain Conversion rate (%) 2-chlorocyclohexanone a 1,2-cyclohexanedione a 1 E.coli BL21 — — 2 E.coli BL21(pET-gdh1) — — 3 E.coli BL21 and E.coli BL21(pET-gdh1) 6.81 29.24 a substrate concentration: 60 mM; “—”was negative result; In support of the hypothesis, biotransformation of 2-chlorocyclohexanone by E.coli BL21 (pET-eryKR1)2 and the control was then investigated.
Stroud: Structure Vol.14 (2006), p.737-748
Teartasin and et al: Structure Vol.12 (2004) , p.1865-1875
Bali and et al: Chemistry﹠Biology Vol. 12 (2005), p.1145-1153

Antonio Carlos, 6627 - Campus Pampulha, Belo Horizonte, MG 31270-901 – Brazil 2 Chemistry Department, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, MG 35400-000, Brazil adsantos@demet.ufmg.br, braphaafranca@hotmail.com, cdanyela_perasoli@hotmail.com, ddalila@iceb.ufop.br Keywords: Warm rolling; Duplex stainless steel; Mechanical strength; Texture; Corrosion resistance; Substructure Abstract.
The ferritic phase, with BCC structure, has numerous slipping systems and high stacking fault energy, while the austenitic phase, of FCC structure, present a lesser amount of slipping systems and significantly lower stacking fault energy [1,6].
Lamellae of ferrite and austenite are a noticeable feature in the deformed structure.
Representative TEM micrographs of as-received sample (Fig. 3a) and after 60% and 80% reduction warm rolling (Fig. 3b,c) showing (a) a smooth structure and some residual dislocation tangles in austenite, and (b) dislocation array in ferrite.
Substructure of the samples obtaining in the TEM bright-field imaging showing (a) as-received, a smooth structure and some residual dislocation tangles in austenite; (b) 60% and (c) 80% at 600°C.

.: Modelling and empirical formulas for chemical corrosion and stress corrosion of cementitious materials, Materials and Structures, vol. 31, pp. 662-668, 1998 [2] Schneider, U., Chen, S.
Fagerlund: Leaching of concrete, CONTECVET manual, 2000 [5] Carde Ch., Francois R.: Aging damage model of concrete behaviour during the leaching process, Materials and structures vol. 30, pp. 465-472, 1997 [6] Carde Ch., Francois R.: Modelling the loss of strength and porosity increase due to the leaching of cement pastes, Cement and concrete composites vol. 21, pp. 181-188, 1999 [7] Carde Ch., Francois R., Torrenti J.M.: Leaching of both calcium hydroxide and C-S-H from cement paste: modeling the mechanical behavior, Cement and Concrete Research vol. 26, No. 8, pp. 1257-1268, 1996 [8] Nguyen, V.H., Colina, H., Torrenti, J.M., Boulay, C., Nedjr, B.: Chemo-mechanical coupling behaviour of leached concrete, Nuclear Engineering and design 237, pp. 2083-2089, 2007 [9] Gérard B., Bellego C., Bernard O.: Simplified modelling of calcium leaching of concrete in various environments, Materials and structures vol. 35, pp. 632-640, 2002 [10] El Saidy M.I., Abadir M.F.: Kinetics of dissolution
of clinker components in some aggressive solutions, International Journal of Applied Chemistry, 2007 [11] Heukamp, F.
T.: Mechanical properties of calcium-leached cement pastes Triaxial stress states and the influence of the pore structure, Cement and Concrete Research, vol. 31, pp. 767-774, 2001 [12] Camps, G., Sellier, A., Turatsinze, A., Escadeillas, G., Bourbon, X.: Modelling of leaching effects on fibre-reinforced concrete properties, Concrete in Aggressive Environments, Performance, Testing and Modelling, pp. 179-186, France, 2009 [13] Tej, P., Vacek, V., Kolísko, J., Čech J., Lo Monte, F.: Computer Nonlinear Analysis of The Influence of Material Characteristics on the Response of a Basement Structure Loaded by Ground Water Buoyancy, Engineering mechanics, Czech Republic, 2014 [14] Sellier, A., Buffo-Lacarriére, L., El Gonuni, M., Bourbon, X.: Behaviour of HPC nuclear waste storage structures in leaching environment, Concrete in Aggressive Environments, Performance, Testing and Modelling, pp. 142-165, France, 2009

Introduction Ductile failure usually takes place after progressive internal degradation of metal component or structure.
Hopperstad, Finite element analyses of plastic failure in heat-affected zone of welded aluminium connections, Computers and Structures 88 (2010) 519-528
Plaskacz, Fission-fusion adaptivity in finite elements for nonlinear dynamics of shells, Computers and Structures 33 (1989) 1307–1323
Moran, Nonlinear Finite Elements for Continua and Structures, Chichester: Wiley, 2000
Hopperstad, Experimental and numerical investigation of fracture in a cast aluminium alloy, International Journal of Solids and Structures 47 (2010) 3352-3365

Compared with the other type of fuel cells (FC) DMFC has many advantages, such as small volume, simple synthetic structure, abundant, cheap and easily stored fuel resource, convenient to be carried and friendly to environment[1,2].
Experimental SWCNTs (from Chengdou Organic Chemistry Institute of China) were immersed in a nitric acid solution with certain concentration to be oxidized at a suitable temperature.
Fig.2 shows that no individual diffraction peaks of alone ruthenium ( Ru) or its oxides appear and the crystal structure of Pt(fcc) is still exhibited for all the catalysts despite ruthenium is added in them.
The crystal faces of [002] ( graphite), Pt (111), Pt ( 200) , Pt ( 220) and Pt (311) present at the different diffraction angles 10nm Fig.2 XRD patterns of different catalysts Fig.3 TEM patterns of 20%Pt-10%Ru/ SWCNTs (sample c) ( 2θmax) of about 25.50° 39.85°,46.40°,67.50°and 81°respectively.The crystal structures of metal platinum and ruthenium are facecentered and hexagonal structures respectively and the ruthenium atoms may replace the platinum atoms to form their melted solid alloy when the atom fraction of Ru is within 0～0.7.
Only the characteristic peaks with facecentered structure of Pt and no characteristic peaks with hexagonal structure of Ru are observed in all the spectrograms, indicating that a part of ruthenium might exists in amorphous state and the other part of ruthenium atoms might replace the platinum atoms to form Pt-Ru alloy[10].

It is widely known that SiC reacts with Mg to form Mg2Si, releasing carbon to dope into the MgB2 structure, substituting boron atom in particular.
In this work, we study the effect of sintering temperature on the crystal structure and superconducting properties of MgB2 reacted with nano-SiC powder at 650°C and 850°C, respectively.
The crystal structure properties of the samples were analyzed by Rietveld Refinement using the PanAlytical X’pert Highscore software.
Besides, the (101) peaks are slightly shifted to higher angle (2q) with increasing SiC additions showing the distortion of MgB2 structure by impurities.
This is in agreement with the increasing C substitution as shown in Table 4 which eventually distorted the MgB2 structure [21].

Reddy College of Engineering (Autonomous), Mylavaram-521 230, Andhra Pradesh, India, 2Department of Chemistry, S.R.R. & C.V.R.
The change in glass transition temperature Tg clearly shows the addition of CuO affect on the glass structure.
This behaviour indicates that the addition of CuO extended the structure of loose glass network.
Optical absorption spectra Analysis of optical spectra is one of the most beneficial tools to figure out the electronic structures of amorphous semiconductors.
The electronic structure of copper atom is 3d104S1 and usual oxidation states are Cu0, Cu1+ and Cu2+.

This is attributed to the destruction of the internal structure of F-III fibers with excessive tension.
However, the excessive tension can damage the internal structure of F-III fibers, resulting in a decrease in crystallinity of F-III fibers.
Structure-property relation in poly(p-phenylene terephthalamide) (PPTA) fibers [J].
Structure and property development of aromatic copolysulfonamide fibers during wet spinning process [J].
Industrial & Engineering Chemistry Research, 42 (2003), 3022--3029.

To allow this passage of the wave, there must be interconnected paths between the pores, which is why we speak of an open cell structure.
The pores inside these open cell structures can be "pass-through", that is, open from both ends or "blind".
This result is obtained by using granulates of different diameters, leaving small voids obtaining an open and porous structure.
Good sound absorption is achieved with a structure with a void percentage of at least 20%.
Green Chemistry, 21(5), 919-936

POSS cages are interesting in part because of their unusual structure, (RSiO3/2) n, where R can represent inert organic groups used to enhance miscibility with polymeric host materials.
In view of the specific structure of POSS with more than two functional groups, they are perfect structure-guiding agents for the synthesis of star-shaped or network polymers.
Octavinyl-POSS was purchased from Aladdin Chemistry Co., Ltd.
The residual Si-Vi and Si-H of modified POSS can further participate in the curing reaction, which introduced POSS completely into matrix structure.
Wang, et al., The effects of structure of POSS on the properties of POSS/PMMA hybrid materials, Polym.