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Online since: January 2013
Authors: Jia Yuan Ye, Wen Sheng Zhang, Bin Wang, Xue Hong Ren
The crystallographic structure of T1 and T2 was similar to that of T3.
Different forms of C3S has closely similar structures[1, 3].
Cement chemistry. 2nd ed.
Hewlett, Lea’S Chemistry of Cement and Concrete. 4th ed.
Belov, Crystal structure of the tricalcium silicate 3CaO·SiO2=C3S.
Online since: February 2014
Authors: Ning Wang, Xing Guang Qi, Yan Min Zhang, Qing Hua Li
Here is the structure of the PCS experiment.
The biggest difference of the two structures is the delay module.
The photon correlator uses nonlinear structure.
Photo-physics and Laser Chemistry.B42 (1987):p.193-213
Journal of Inclusion Phenomena and Macrocyclic Chemistry.2002, 44:101-105
Online since: October 2006
Authors: Yue Jin Shan, Yoko Kanai, Keitaro Tezuka, Hideo Imoto
However, there were few researches on high-oxidation cation of Te6+ in the B site, especially for electromagnetism properties and crystal structure, though a paper about synthesis of A2MTeO6 was reported by a group of the former Soviet Union in 1970s[1].
Furthermore, crystal structure and electromagnetism properties of Ca2MTeO6 (M = Mn, Co, Mg) samples were evaluated.
For phase identification and structure analysis, powder X-ray diffraction data were recorded at room temperature using Cu Kα radiation by a Rigaku-RINT2100 diffractometer.
The crystal structures of obtained samples were analyzed using the Rietveld analysis program, RIETN2000.
Gopalakrishnan: New directions in Solid State Chemistry (Cambridge University Press, United Kingdom 1997).
Online since: June 2014
Authors: Kai Wang, Hua Yang, Yan Ni Zhang
And the inner energy of molecule of coal structure enhanced, with the oxidation and pyrolysis of the active groups, resulting in the beginning of chemistry reaction, and the gas of CO, CO2 run over.
Figure 1 TG, DTG, DSC curves in the process of thermal anaylsis experiment After the dry temperature, the capacity of oxygen chemistry absorption raised, and the moisture reduced, resulting in the trends balance.
Then the chemistry absorption enhanced, resulting in the addition of the weight more than the decrease.
The larger sample quality led to less contacting area with oxygen, but more accumulation of energy, so oxidation reaction of coal at low temperature was less, and the aromatic ring structure of coal broke and involved in oxidation reaction.
Online since: January 2015
Authors: Mohamed Mahmoud Nasef, Kamaruddin Hashim, T.M. Ting
The high dependency on absorbed dose was suggested to be caused by the structure and types of the polymer [6, 7].
The intensity of the peak for hydrogen-bonded NH stretching, 3300; NH Fermi resonance, 3086; CH2 asymmetric stretching, 2931 cm-1; CH2 symmetric stretching, 2859 cm-1; amide I, 1645 cm-1 and amide II, 1544 cm-1 were the characteristic of original nylon-6 polymer structure.
Khandal, Radiation processing of Nylon 6 by e-beam for improved properties and performance, Radiation Physics and Chemistry, 78 (2009) 199-205
Kinetic study on the grafting onto poly(tetrafluoroethylene-ethylene) copolymer, Journal of Polymer Science Part A: Polymer Chemistry, 30 (1992) 1969-1976
Dahlan, Kinetic investigations of graft copolymerization of sodium styrene sulfonate onto electron beam irradiated poly(vinylidene fluoride) films, Radiation Physics and Chemistry, 80 (2011) 66-75.
Online since: January 2016
Authors: Pannarai Chuenkruth, Achara Kleawkla
Reducing Sugar Production from Agricultural Wastes by Acid Hydrolysis ACHARA Kleawkla1, a * and PANNARAI Chuenkruth2,a 1Department of Chemistry, Faculty of Science, Maejo University, Chiang Mai, Thailand aachara_kleawkla@yahoo.co.uk, bpare-p.c.
Because of lignin is a complex, large molecular structure containing crosslinked polymers of phenolic monomer, imparting structure support, impermeability and resistance against microbial attack so hydrolysis of cellulose and hemicelluloses had increased acid in the reaction.
Acknowledgments The authors gratefully acknowledge supports from National Research Council of Thailand (NRCT), Thailand Research Fund (TRF) and Department of Chemistry, Faculty of Science, Maejo University, for providing the laboratory facilities.
Shiraishi (Eds.), In wood and cellulosic chemistry; Marcel Dekker, Inc., New York, 1991, pp. 331-392
Online since: December 2011
Authors: Bao Liu, Si Xiang Zhang, Wei Zhou
Figure 1 is the structure diagram of fluorescence image detecting system.
Fig. 1 Structure chart of fluorescence image detecting system Fluorescence microscopic system is responsible for the cells images acquisition when switching is in progress between in 340nm and 380nm wavelengths automatically.
Research on Transmembrane Behaviors of Y3+ by Fure-2 Fluorescence Probe, Chinese Journal of Inorganic Chemistry, 1999,15(1):83-88
Analytical Chemistry,2006,78(15):5543-5551
[9] Yin xuefeng, Shen hong, Fang zhaolun, A Simplified Microfabrication Technology for Production of Glass Microfluidic Chips, Chinese Journal Of Analytical Chemistry ,2003, 31(1)
Online since: August 2011
Authors: Yu Tian Wang, Xiao Qing Shao, Zhao Pan, Xi Jun Wu
When coexisting components are similar in molecular structure and chemical composition, the interference may be very serious.
In the meantime, physical properties, which decide on molecular structure or chemical composition, would be similar also.
The theory of measurement Parallel factor analysis (PARAFAC) is a method of processing three-way array data, which has been convenient application in the field of chemometrics.[3~7] Aim to complex chemical system, PARAFAC method can realize using a mathematical separation substitute for a chemistry separation to measure a single component content in coexistence system directly by means of decomposing of the 3-D fluorescence spectra data or other trilinear data, and separating the spectral features of multiple main components meanwhile.
[3] Ni Yongnian: Application of Chemometrics in Analytical Chemistry (Science Publication, 2004)
[4] Liu hailong, Wu Xijun and Tian Guangjun: Chinese Journal of Lasers, Vol.35, (2008), p. 685-689 [5] Deng Hu, Shang Liping: Spectroscopy and Spectral Analysis, Vol29, (2009), p. 1088-1092 [6] Cui Zhicheng, Liu Wenqing and Zhao Nanjing: Spectroscopy and Spectral Analysis, Vol.28, (2008), p. 1332-1335 [7] Huang Lei, Wu Hailong and Nie Jinfang: Computers and Applied Chemistry, Vol.27, (2010), p. 893-897 [8] Rasmus Bro: Chemometrics and Intelligent Laboratory Systems, (1997), p. 149-171
Online since: March 2007
Authors: Xing Guo Li, J.H. Yu, Y.F. Zhu, Wen Huai Tian, Shi Cheng Zhang
Tian 3 1 Department of Chemistry, Tsinghua University, Beijing 100084, China 2 State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, P.
The structure of CdSe nanoparticles has been studied by using XRD, TEM, and HRTEM.
This can be explanted from the surface structure of CdSe nanoparticles.
For the CdSe particles are stabilized by mercaptocarboxylic acid, the surface structure of CdSe nanoparticles can be proposed in Figure 3.
Decreasing the reaction temperature leads to lower growth rate and the UV-vis absorption spectra show more detailed fine structure.
Online since: August 2013
Authors: S. Utara, U. Moonart
Moonartb, Division of Chemistry, Faculty of Science, Udonthani Rajabhat University, Thailand Emaila: songkot_u@hotmail.com, Emailb: Chemudru@hotmail.co.th Keywords: Ultrasonic degradation, Natural rubber latex, Molecular weight; Sonication time Abstract.
The time-dependent evolution of the molecular weight of the natural rubber latex was determined using gel permeation chromatography, and its structure by means of the fourier transform infrared (FTIR) technique.
The FTIR results also suggest that the structure of polyisoprene is unaltered by ultrasonic wave treatment at these frequencies.
The results confirm that the molecular structure of polyisoprene in natural rubber latex is unaltered by treatment with ultrasonic waves, consistent with findings of other researchers [2, 3].
Sijbesma, Ultrasound in polymer chemistry: revival of the establised technique, J.