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Online since: May 2011
Authors: Hong Yan Guo, Miao Chen, Xiao Chun Cao, Jing Wang
The micro structures of the suspended materials in produced water were observed with particle imager and SEM.
Rise-3002 particle imager was used to observe the micro structures of the suspended materials in untreated produced water and treated produced water.
Guo: Chemistry and Adhesion.
Online since: July 2012
Authors: Lian Ying Lu, Zheng Dong Fang, Yong Zhou Chen, Wen Zhou, Xian Hong Wei, Qing Tao, Zhong Shan Yu
Synthesis and Characterization of New 2-Methoxy-thieno[2,3-d]pyrimidin-4(3H)-one Lian-Ying Lua, Zhong-Shan Yub, Zheng-Dong Fangc, Yong-Zhou Chend, Wen Zhoue, Xian-Hong Weif and Qing Taog College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China allyhbhx@sina.com, byuzhongshanhbsy@163.com,czdfangluo@sina.com, dchenyongzhouhbsy@163.com, ezhouwenhb@126.com, fweixh1966@163.com, gqingtao1966@163.com Keywords: 2-methoxy-thieno[2,3-d]pyrimidin-4(3H)-one; aza-Wittig reaction; synthesis Abstract.
Its structures were determined by means of MS, IR and 1H NMR spectra.
Its structure was determined by means of MS, IR, 1H NMR spectra.
Online since: February 2014
Authors: Yu Chuan Jiang, Fang Quan Yang, Gang Lin Hu
The core of the system is a solar photovoltaic cell, a solar cell to work well not only to the battery materials, structures, is also affected by the external working conditions.
Introduction Theoretically ideal single crystal silicon material having a periodic structure, but the actual silicon solar cells, purified from the material prepared doped into the battery, and the introduction of impurities inevitably generated all faults, these impurities and defects cause additional potential field, the formation of localized electronic states, electrons and holes trapped in the defect and the surrounding impurities, is formed in a band gap energy level of the trap to form a composite center, causing the loss of current and the conversion efficiency, it is true solar a composite cell of the most important processes known compound SRH (Shockley Read Hall recombination).
Sharma: Effect of counter electrode, thickness and sintering temperature of TiO2 electrode and TBP addition in electrolyte on photovoltaic performance of dye sensitized solar cell using pyronine G (PYR) dye, Journal of Photochemistry and Photobiology A: Chemistry, Vol.6 (2009), p.53-63 [5] A.
Online since: July 2015
Authors: Wei Qiao Liu, Mi Qian, Hai Feng Qian, Wei Ning Lei, Chuang Ye Wang
It makes the acting force between the crystals uneven, and made crystal structure to become more easily to be damaged and made the wear resistance of electroforming films to reduce.
Then the different refining metallic crystals arrange closely to form uniform surface structure.
Rely on the close and even accumulation between crystal structures, composite electroforming films become difficult to be destroyed and greater wear resistance is given.
Nano-diamond particles dispersed uniformly in the electroforming films and crystal structure is fine and uniform.
Mou: Nano-materials and nano-structure(Science Publications, China 2001)
Online since: July 2005
Authors: Ferenc Wéber, Filiz Çinar Şahin, Csaba Balázsi, O. Addemir, Zsolt Kasztovszky, Zsuzsanna Kövér
Both structures are consisting of submicron grains, however in the case of refernce sample CB0% small hexagonal shaped β-Si3N4 grains have appeared.
Indeed, as presented in Fig. 2, in the structure of sample CB0% a considerable amount of β-Si3N4 lines appeared.
A porous structure and an enhanced grain (β-Si3N4) growing process can be observed in the CB10% scnning micrograph (Fig. 2b).
Graphite platelets are included in the structure even after sintering as it is shown in Fig. 2d, sample G10%.
We found a nitrogen exhaust from CB10% structure according to following reaction taking place around 1435ºC: 3C(s) + Si3N4 (s) → 3SiC(s) + 2N2(g) [6].
Online since: May 2007
Authors: Hua Zhe Yang, Cai Bei Zhang, Yang Qi, Wan Shi Chen, Zhuang Zhi Zhi, Wei Wei
Results revealed that the technic of secondary gel was preferable to intensify the three-dimensional net structure of gel and consequently improved the superconducting phase purity of Bi-2212. 1.
The results of the experiment reveal that the intensified structure of the secondary gel is the main reason to increase Bi-2212 phase purity. 2.
In this way, the segregated ingredient can be chelated and participate in the form of gel structure.
In that way, the bridging stability of secondary gel is enhanced, and the three-dimensional net structure is intensified, which are in agreement with the results of XRD patterns.
References [1] Mao Chuan-bin, Zhou Lian, Du Zhe-hua, Wu Xiao-zhu: Chemistry on Line Vol. 9(1996), P.54 [2] F.
Online since: June 2013
Authors: Guo Hua Gao, Kang Cheng Wei, Yue Liu, Hang Yang
However, it is always hard to design an automatic transplanting machine with flexible structure and low price which can efficiently and safely complete seedlings transplanting.
The automatic transplanting machine of abroad is complicated structure and high cost.
To achieve high efficiency but low price, the new structure could be efficient and uncomplex, so this can be abstracted for Productivity and Complexity of the Device.
Change from static to movable fields, from unstructured fields to those having structure.
Asian Journal of Chemistry.24(2012), p. 4429 -4432
Online since: October 2010
Authors: Darja Lisjak, Miha Drofenik, Simona Ovtar
Oriented Barium Hexaferrite Thick Films Prepared by Electrophoretic Deposition in a Magnetic Field Simona Ovtar1, a, Darja Lisjak1b and Miha Drofenik1,2,c 1Jozef Stefan Institute, Ljubljana, Slovenia 2Faculty for Chemistry and Chemical Engineering, University of Maribor, Maribor, Slovenia asimona.ovtar@ijs.si, bdarja.lisjak@ijs.si, cmiha.drofenik@ijs.si Keywords: Barium hexaferrite, Electrophoretic deposition, Magnetic field, Stabile magnetic suspension.
The applied magnetic field further enhances the magnetic attraction between the particles and orders the particles into a regular structure.
The shape of the ordered structure depends strongly on the concentration of the suspension, magnetic properties of the particles and the external magnetic field. [9, 10] In this article we present the preparation of oriented films from hard magnetic BaHF by EPD in an external magnetic field.
The applied external magnetic field also decreases the stability of the suspension because of the induced magnetic attraction between the particles, as a result of which ordered structures can be formed. [9] To successfully orient the particles during the EPD the individually dispersed particles must be present in the suspension.
Bergstrom: Surface and Colloid Chemistry in Advanced Ceramics Processing (Marcel Dekker, INC, New York 1994) [8] S.
Online since: October 2011
Authors: Sui Yi Zhu, Ming Xin Huo, Kang Zhou, Jian Wang, Xia Yang
Due to the specific molecular structure of the hazardous organic compound, the primary products are generally more difficult to be biological degraded than their parent compound.
He et al. [4] studied the relation between aerobic biodegradability and chemical structure of heterocyclic compounds, and found that the biodegradation rate constants was 27.1 x 10-3 and 5.8 x 10-3 l/g·h for quinoline and pyridine respectively.
This also indicated that glucose medium appeared to facilitate the enhancement of protease activity, which was attributed to that glucose has a relatively molecular structure and was benefited to be easily degradated by microbe, result in the improvement of the enzyme producing [19].
Ma: Environmental Chemistry Vol.23 (2004), p. 252 [7] X.L.
Wang: Environmental Chemistry Vol.19 (2000), p. 523 [17] J.
Online since: February 2019
Authors: V. Dmitriev, G. Baronin, E. Sergeeva
Diffusion properties of polymeric materials (PM) depend greatly on the structure of experimental materials, their hydrophily or hydrophoby, crystallinity degree, molecular chains orientation [1-4].
Low values of effective diffusion coefficients indicate a non-porous structure of the investigated polymers and moisture transport by molecular diffusion [15].
Thus, these experiments once again prove the non-porous structure of such polymers and the moisture migration through molecular diffusion.
Chemistry and Chemistry Technology. 57 (2014) 103-107.