Search results

Janzén 1,e 1 Linköping University, Department of Physics, Chemistry and Biology, 581 83 Linköping, Sweden 2 University of Pittsburgh, Physics & Astronomy Department, 100 Allen Hall 3941 O'Hara Street, Pittsburgh, PA, 15260 USA a iiv@ifm.liu.se, b ahy@ifm.liu.se, c fey6@pitt.edu, d choyke@pitt.edu, e erj@ifm.liu.se Keywords: phosphorus donor, ionization energy, donor-acceptor pair luminescence Abstract.
In conclusion, we have observed well-structured DAP emission in 3C-SiC intentionally doped with P and Al, which can be entirely explained by considering PSi – AlSi pairs (see also [5]).

Scaling Laws and Forecasting Techniques of Silicate in ASP Flooding Xin Suia, Haiming Wua, Baohui Wanga, Dong Jinga, Hongjun Wua, Li Lia Dandan Yuana Northeast Petroleum University, College of Chemistry & Chemical Engineering, Provincial Key Laboratory of Oil & Gas Chemical Technology, Daqing 163318, China awangbaohui60@163.com Keywords: Alkaline-Surfactant-Polymer (ASP) flooding, silicate, scaling laws, forecasting Abstract.
It would make aluminum ions and silicon ions that in rocks into solution and destroy original layer structure and break original liquid ions equilibrium.

Fig. 1 The SEM analysis of F1 (left) and F2 (right) Fig. 2 The XRD analysis of F1 (left) and F2 (right) Table 1 Chemical component of F1 and F2 Components SiO2 Al2O3 Fe2O3 CaO MgO K2O SO3 Loss F1 w (%) 39.25 32.12 5.43 7.14 1.56 0.33 3.45 9.23 F2 w (%) 54.34 37.17 2.34 2.36 0.26 0.67 0.19 2.24 Table 2 Physical properties of F1 and F2 Fly ash Specific area (m2/ kg) Water demand (%) D50 (µm) F1 317 120 19.82 F2 213 101 28.64 3.2 Influence of water-binder ratio on the compressive strength of AAC The suitable water binder ratio makes the gas unblocked in slurry and gets the better stomata structure.
Siliceous material (%) Calcareous material (%) ρ (kg/m3) Compression strength (MPa) 1 78.5 20 548 1.5 2 73.5 25 532 2.3 3 67.5 31 516 3.5 4 63.5 35 520 3.4 5 58.5 40 512 3.1 Fig.3 The SEM of AAC blocks using F1 (left) and F2 (right) Fig.4 The X-ray diffraction of AAC blocks using F1 (left) and F2 (right) The SEM and X-ray diffraction analysis indicate under the high temperature and pressure, the chemistry of hydration is changed.

The Effects of Preheated and Diluted Air on the Flame Structure Flame ignition delay as well as lift-off flame were reported in conventional combustion of natural gas due to air dilution with nitrogen.
Bowman, Mechanism and modeling of nitrogen chemistry in combustion, Progress in Energy and Combustion Science 15 (1989) 287–338

Hasanein1,c 1Beirut Arab University, Faculty of Science, Chemistry Department, P.O.box 11-5020, Beirut- Lebanon.
The electronic properties of these bases and their different tautomeric structures as well as their intermolecular complexes have been the subject of extensive theoretical investigations [1-7].

For instance it is widely known that higher cooling rates lead to a finer grain structure and therefore a higher yield strength of the cast material [1,2].
Haynes, CRC Handbook of Chemistry and Physics 93ed 2012-2013, p.6 (15-20)

Studies on Donor-Acceptor Substituted with Triphenylamine-core Fluorescent Derivatives Cai-qi Zhou1, Bin Hu1, Cui-hong Li1, Qian-ping Lou1, Qing-bao Song1,a,* and Cheng Zhang1,b,* 1State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology College of Chemical Engineering and Materials Science Zhejiang University of Technology, Hangzhou, 310014, PR China aqbsong@zjut.edu.cn, bczhang@zjut.edu.cn, *correspondence author Keywords: D-π-A structure; triphenylamine-core; electrical and photophysical properties; N-phthalimide; coupling reaction Abstract.
The relationship of the solvent polarity or the conjugation length of the D-A structure with the luminescent properties has been studied by the UV-vis spectra and the fluorescent spectra.
In this paper, we firstly designed and synthesized novel structure of D-A-substituted with triphenylamine-core fluorescent derivatives based on 2,7-dibromo-9-fluorenone.
The emission spectra of 5a-c, 6 showed an obvious red-shift, which was concomitant with the increase of D-A structure conjugation length.
The relationship between the polarity of solvents and the conjugation length of the D-A structure with luminescent properties has been studied using absorption and fluorescence spectra.

Besides, the morphology, composition, and structure of the coating were analyzed by using Scanning Electron Microscope (SEM), Energy Dispersive Spectrdmeter (EDS), and X-ray Diffraction (XRD).
Furthermore, this study conducted characteristic analysis on morphology, composition, and structure of the alloy coating, and tested shielding effectiveness of the alloy fabric.
HI TACHI S-4800 Scanning Electron Microscope (SEM), VGR-3 X-ray energy spectrum, and BRUKER AXS D8ADVANCE X-ray Diffraction (XRD) were utilized to analyze the morphological changes, composition, and structure of the coating, respectively.
Fabrication of Copper/modal Fabric Composites Through Electroless Plating Process for Electromagnetic Interference Shielding[J].Materials Chemistry and Physics, 2013,140(2-3): 553-558

Specific calculation method is as follows: the number of transmission groups is known in structural formula, usually, a transmission group consists of two transmission shafts, but in practical application, for compact structure, the driven gear of the former transmission group and the driving gear of the latter group are often mounted in the same transmission shaft.
Wu: Computers and Applied Chemistry, Vol. 26 (2009), p.763-766

China 3College of Chemistry and Environmental Engineering, Yangtze University, jingzhou 434020 HUBEI Province P.R.
Calcinations of TiO2/AC between 350 to 400 °C lead to a crystal of anatase and amorphous mixed crystal structure[9].