Search results

Theoretical Investigation of Product Channels in the CH3O2 plus CN Reaction Xiang Tiancheng*, Si hongyan School of Chemistry and Chemical Engineering, Xuchang University, Xuchang 461000, China email: xtc7828@163.com Keywords: Reaction mechanism, CH3O2 radical, CN radical.
The energies of the intermediates and transition states are calculated at the CCSD (T) /6-311++G (3df,3pd) level im1 im2 ts1 ts2 ts3 ts4 ts5 Fig. 1 Optimized structures of transition states and intermediates (bond length in angstrom and angle in degree) at the B3LYP/6-311++G(3df,3pd) level.
Journal of Molecular Structure: THEOCHEM, 2005(725) 103-109
Laser induced fluorescence studies of iodine oxide chemistry.

Finite Element Model Rubber - metal ring makes the structure and axial load cell can be applied to axisymmetric simulation.
In order to affect the radial load and post-processing, the selection of the grid，structure 1 / 2, along the radial axis direction of symmetry, as shown in Fig.1, namely, the x-axis.
Rubber Chemistry and Technology.
Wang: Strain energy release rates for crack growth in an elastic cylinder subjected to axial shear．Rubber Chemistry and Technolog.Vol.661993). p.712-732

Vrvić2,3,g 1Institute for Chemistry, Technology and Metallurgy, University of Belgrade 2BREM GROUP Ltd., Belgrade 3Faculty of Chemistry, University of Belgrade, Serbia asrdjan@chem.bg.ac.rs, btanja.bremgroup@open.telekom.rs, cjavdalovic@chem.bg.ac.rs, dvbeskoski@chem.bg.ac.rs, emilailic@chem.bg.ac.rs, fggojgic@chem.bg.ac.rs, gmmvchem@sezampro.rs Keywords: complex pollutants from the oil industry, bioremediation, cobalt, molybdenum, form changes Abstract.
Prins, Extended X-ray absorption fine structure determination of the structure of cobalt in carbon-supported Co and Co-Mo sulfide hydrodesulfurization catalysts, J.

Indirect Determination of Acetylcysteine in Pharmaceutical Sample by Discoloration Spectrophotometry using Fe(Ⅲ)-Tiron System Changqing Tua and Xinrong Wenb College of Chemistry and Environment,Jiaying University,Meizhou, Guangdong 514015, P.
Introduction Acetylcysteine (AC,the molecular structure of acetylcysteine is shownin Fig.1) is known to be a powerful mucolytic agent for the treatment of chronic bronchitis and other pulmonary diseases complicated by the production of viscous mucus.Acetylcysteine was also used in cancer chemotherapy and as an antidote in paracetamol overdosage.It is of great importance and significance for life science.
The molecular structure of acetylcysteine Up till now, various different methods have already been applied for the determination of acetylcysteine, such as spectrophotometry[1,2], flow injection analysis[3,4], fluorometry[5,6], HPLC method[7],HPLC-UV method[8],LC method[9.10], LC-MS method[11,12], electrochemical analysis[13,14], etc.
Brief Handbook of Analytical Chemistry;Beijing University Press: Beijing, 1981;p262.

Meanwhile, Figure 2 showed obvious areas between splenic red pulp and white pulp in blank group, however, this structure was wrecked in H22 tumor bearers.
After EGP treatment, thymuses and spleens illustrated a normalized structure, which meant EGP had protective effects on the immune organs against tumor.
Food Chemistry. 118 (2010) 823-829
Food Chemistry. 130 (2012). 376-382

., Klong 1, Klong Luang, Pathumthani 12120 Thailand 2 Department of Chemical Engineer, Faculty of Engineer, Srinakharinwirot University, Nakhonnayok, 26120 Thailand 3 Department of Chemistry, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Chalongkrung Rd., Ladkrabang, Bangkok, 10520 Thailand a angkhanj@mtec.or.th Keywords: TiO2 gel, V-doped TiO2 gel, catalytic activities, porous α-Al2O3 beads and coating Abstract.
Overall, the microstructure and pore structure of the beads were observed by scanning electron microscopy (SEM, JSM- 6310F, JEOL, Japan) in conjunction with energy dispersive spectroscopy (EDS, Link ISIS 300, Oxford, UK).
The nano-size and nano-structure were clearly observed by transmission electron microscopy (TEM, 2010, JEOL, Japan) in conjunction with energy dispersive spectroscopy (EDS, Link ISIS 300, Oxford, UK).
Wu and Chih-Hsien Chen: Journal of Photochemistry and photobiology A: Chemistry Vol. 163 (2004), p. 509

The clathrate compounds with the general formula A8�B16� B30� , where A �=Ba, Sr, B �=Al, Ga, B �=Si, Sn, have been known to have an open framework structure to allow the introduction of atoms that can vibrate inside the cage.
Cordier and Woll [3] have shown that some transition metal atoms like Ni, Cu, Pd, Ag, Pt or Au can partially substitute for Si ones in compounds Ba8AxSi46-x, having a type-I clathrate structure, with x ranging from 1.8 for Ni to 6 for Au.
Solid State Chemistry Vol. 177, (2004), p. 1905 [9] S.
Solid State Chemistry Vol. 151, (2000), p. 61

Fig.1 Heat evolution rate of cementitious material during its setting and early hardening period Temperature control of large concrete structures (mass concrete) is of great importance to prevent thermal cracking and guarantee the durability.
In this study, based on the design of the C60 high performance concrete for a high volume bridge structure, the effects of mineral admixtures and superplasticizer on reducing the heat of hydration were evaluated.
Taylor, The Chemistry of Cement, second ed., Academic Press, London, UK, 1997
S Brown, Ninth International Congress on the Chemistry of Cement, vol.Ⅰ, New Delhi, India, 1992, pp. 485–525

Smectite clay has being used in several purposes, due to its excellent physical, chemistries, and structural properties.
Main applications of smectites in Brazil are as agglomerative in metallurgic molds, in iron ore pelleting, as drilling mud in oil and water catch wells, as clarifier of wines, in catalyses at the chemistry and pharmaceutical industries, for pollutants removal in water treatment plants, in cosmetic among other applications.
This kind of organophilic clay reacts with the polymer materials collaborating in its structure during the mass preparation and in the vulcanization, transferring to the final product technological properties the same or better than the traditionally carbon black filler [4].
The structures of natural rubber have been broken after spending + / - 5 minutes in the tumbler cylinder format featuring blanket.

Introduction Mass spectrometry analysis has been widely applied in atomic energy, petroleum and chemical industry, electronics, pharmaceutical and other industrial production, agricultural scientific research departments and physical electronics and particle physics, geology, organic, biological, inorganic, clinical chemistry, archeology, environmental monitoring, space exploration and other fields[2].Time of flight mass spectrometer had the advantages like good sensitivity, high resolution, fast analysis speed, and its detection limit was only limited by the performance of detector.
Calculation The structure of the electrodes group of the ion source was shown in Fig1.
A structure diagram of ion source electrodes group.
Journal of Protein Chemistry, Vol. 16, No. 5, 1997 [5].Qingmin Zha,Sanxiang Ren,Bingfa Jin,Dong Chen,Jun Li,Zhihun Lai,Huimin Deng,Shankai Zhao.A Study on Pulsed Ion Extraction of Matrix-assisted Laser Desorption Ionization Time-of –flight Mass Spectrometry[J].