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Online since: January 2012
Authors: Chang Peng Chen, Jian Xiong Xie, Jia Fu Wang
First-principle study of the electronic and optical properties of Ti doped ZnS
Changpeng Chen, Jianxiong Xie, Jiafu Wang
School of Science ,Wuhan University of Technology, Wuhan Hubei 430070,China
Email:16941612@qq.com
Keywords: First-principles calculation; electronic structure; optical properties; Ti doped ZnS
Abstract.
Introduction Owing to its excellent chemical stability, corrosion resistance , catalytic activities and non- toxic properties, ZnS has become a promising material for short wavelength optoelectronic devices, sensor and photocatalytic devices [1] [2] [3].
Compared with the undoped ZnS(Fig.4), the remarkable feature in energy band for Ti-doped ZnS(Fig.5) is that the Fermi level shifts upward into the conduction band, which indicates that the material is n-type metallic.
[5] Murugadoss, G,Journal of Luminenscence.Volume 131 Issues 10 Oct 2011 Pages 2216-2223
[6] Nie EY Applied Surface Science Volume 257 Issues 21Aug 2011, Pages 8762-8766 [7] Chen,HX Physics Letters A Volume 375, Issues 24, Jun 2011, Pages 2444-2447 [8] SegallM D, Lindan P, ProbetM J,etal.J.
Introduction Owing to its excellent chemical stability, corrosion resistance , catalytic activities and non- toxic properties, ZnS has become a promising material for short wavelength optoelectronic devices, sensor and photocatalytic devices [1] [2] [3].
Compared with the undoped ZnS(Fig.4), the remarkable feature in energy band for Ti-doped ZnS(Fig.5) is that the Fermi level shifts upward into the conduction band, which indicates that the material is n-type metallic.
[5] Murugadoss, G,Journal of Luminenscence.Volume 131 Issues 10 Oct 2011 Pages 2216-2223
[6] Nie EY Applied Surface Science Volume 257 Issues 21Aug 2011, Pages 8762-8766 [7] Chen,HX Physics Letters A Volume 375, Issues 24, Jun 2011, Pages 2444-2447 [8] SegallM D, Lindan P, ProbetM J,etal.J.
Online since: May 2011
Authors: Xiao Fan Du, Hai Lin Wu, Shi He Qin, Yao Li
So it is necessary to optimize the precast water head and then select appropriate preloading filling water value in order to guarantee the safely operating of the structure as well as make materials give full play to their strength for the purpose of achieving optimal economic.
Material parameters and calculation schemes In the paper, the preloading filling spiral case structure of the pumped storage hydropower station is seen as research background.
Table 4 The gap values Schemes Section Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ BY-1~ BY-4 Top b 0 0 0 0 0 0 0 0 0 Medium 0 0 0 0 0 0 0 0 0 Bottom 0 0 0 0 0 0 0 0 0 BY-5 Top b 0.138 0.262 0.151 0.034 0 0 0 0 0 Medium 0.254 0.084 0.041 0.081 0.105 0.087 0.079 0.041 0.047 Bottom 0.021 0 0 0 0 0 0 0 0 Acknowledgements The research presented above is supported by the Outstanding Youth Talent Project of Education Department of Hubei Province (NO.Q20101208) and the Natural Science Fund Projects of Hubei Province (NO. 2010CDB10802).
Beijing: Science Press.
Three-dimensional finite element analysis of surrounding concrete structures on "preloading filling" spiral case in Three Gorges Hydropower Station [J].Journal of Hydraulic Engineering,2001.6.
Material parameters and calculation schemes In the paper, the preloading filling spiral case structure of the pumped storage hydropower station is seen as research background.
Table 4 The gap values Schemes Section Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ BY-1~ BY-4 Top b 0 0 0 0 0 0 0 0 0 Medium 0 0 0 0 0 0 0 0 0 Bottom 0 0 0 0 0 0 0 0 0 BY-5 Top b 0.138 0.262 0.151 0.034 0 0 0 0 0 Medium 0.254 0.084 0.041 0.081 0.105 0.087 0.079 0.041 0.047 Bottom 0.021 0 0 0 0 0 0 0 0 Acknowledgements The research presented above is supported by the Outstanding Youth Talent Project of Education Department of Hubei Province (NO.Q20101208) and the Natural Science Fund Projects of Hubei Province (NO. 2010CDB10802).
Beijing: Science Press.
Three-dimensional finite element analysis of surrounding concrete structures on "preloading filling" spiral case in Three Gorges Hydropower Station [J].Journal of Hydraulic Engineering,2001.6.
Online since: December 2011
Authors: Chen Xin Liu, Jun Chen, Bang Wen Zhang, Lin Chao Ke Bu
., Cheng Du 611731, Si Chuan, China.
2Inner Mongolia University of Science and Technology, Baotou 014014 Inner Mongolia, China
3Jinan iron and steel company co., Ltd, Jinan 250101 Shandong, China
a foresttiger119@163.com b bangwenz@126.com c chaseliu0955@sina.com
d quan820720@126.com
Keywords: Preparation concentrate of coarse niobium; Microwave heating; Carbon-thermal reduction
Abstract: Research is tested by the ways of microwave reduction-weak magnetic separation for recycling niobium and iron based on the preparation concentrate of rough niobium.
Fig.1 Microwave carbon thermal reduction diagrammatic sketch Raw material.
Chemical composition of the rare selected ore tailing (%) Element TFe FeO SiO2 P S F K2O Na2O Percentage 18.40 1.50 15.67 1.01 2.46 12.85 0.46 1.36 Element CaO MgO Al2O3 MnO BaO Nb2O5 REO Hydroxide Percentage 25.95 1.80 1.68 0.78 3.58 0.18 5.80 3.96 Table 2 Mineral composition of rare selected ore tailing (%) Ore magnetite hematite limonite bastnaesite monazite fluorspar niobrium ore Percentage 3.7 21.0 7.8 4.1 2.0 13.4 0.5 Ore marble rockallite riebeckite quartz glist barite ardealite sideropyrite Percentage 15.2 7.4 3.2 11.5 6.0 1.8 1.9 0.5 Fig. 2 XRD of synthesis Columbite in the Fig. 3 XRD of synthesis Columbite in the temperature of 1250~1300℃, different temperature of 1300℃, different insulation time insulation time Experiment method. (1) Material
Simulating composition of the preparation concentrate of coarse niobium (%) TFe Fe2O3 FeO SiO2 CaO MgO Al2O3 MnO 45.97 52.91 1.26 6.78 11.39 0.78 0.73 0.34 BaO Nb2O5 K2O Na2O P F S REO 1.55 2.58 0.20 0.59 0.44 5.56 1.06 2.51 (3)Presser: press the prepared material to chip by press machine and dry it into the vacuum drying cabinet
Experiment Research on Smelting of Baotou Niobium Ore with High Iron Content, JOURNAL OF NORTHEASTERN UNIVERSITY(NATURAL SCIENCE), 1996, 17(1): 35-39
Fig.1 Microwave carbon thermal reduction diagrammatic sketch Raw material.
Chemical composition of the rare selected ore tailing (%) Element TFe FeO SiO2 P S F K2O Na2O Percentage 18.40 1.50 15.67 1.01 2.46 12.85 0.46 1.36 Element CaO MgO Al2O3 MnO BaO Nb2O5 REO Hydroxide Percentage 25.95 1.80 1.68 0.78 3.58 0.18 5.80 3.96 Table 2 Mineral composition of rare selected ore tailing (%) Ore magnetite hematite limonite bastnaesite monazite fluorspar niobrium ore Percentage 3.7 21.0 7.8 4.1 2.0 13.4 0.5 Ore marble rockallite riebeckite quartz glist barite ardealite sideropyrite Percentage 15.2 7.4 3.2 11.5 6.0 1.8 1.9 0.5 Fig. 2 XRD of synthesis Columbite in the Fig. 3 XRD of synthesis Columbite in the temperature of 1250~1300℃, different temperature of 1300℃, different insulation time insulation time Experiment method. (1) Material
Simulating composition of the preparation concentrate of coarse niobium (%) TFe Fe2O3 FeO SiO2 CaO MgO Al2O3 MnO 45.97 52.91 1.26 6.78 11.39 0.78 0.73 0.34 BaO Nb2O5 K2O Na2O P F S REO 1.55 2.58 0.20 0.59 0.44 5.56 1.06 2.51 (3)Presser: press the prepared material to chip by press machine and dry it into the vacuum drying cabinet
Experiment Research on Smelting of Baotou Niobium Ore with High Iron Content, JOURNAL OF NORTHEASTERN UNIVERSITY(NATURAL SCIENCE), 1996, 17(1): 35-39
Online since: December 2014
Authors: Lei Gao, Teng Gang Xu, Jian Jun Zhu, Peng Cheng Huo
A New Fixture for Automobile Belt Tensioner Brace
Lei Gao a *, Teng Gang Xub , Jian Jun Zhu c ,Peng Cheng Huod
1 School of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai,China
am010113112@sues.edu.cn, bxutg@sues.edu.cn, czjj67620343@163.com, d531881871@qq.com
Key words: Brace.
Currently, there is no exact formula for calculating the force of support frame in machining.Since support frame machining belongs to metal milling area,which is similar to the milling mechanism.According to the empirical formula[8] , in the milling process, the main cutting force that is radial milling force Fz: FZ=CFae0.86af0.72dt0.86apzkF, (1) among them, ---Milling coefficients CF for the different materials; ---Feed af; ---Cutter diameter dt; ---Milling depth ap; ---Cutter teeth z; --- Correction factor kF of HSS Milling ; ---Milling contact arc deep ae; Because the material is aluminum,taking the milling coefficient CF as 196,milling contact arc deep ae as 10mm, feed af as 0.1mm / z, cutter diameter as 20mm,milling
Journal of equipment manufacturing technology equipment manufacturing technology, 2013, 70-71
Shanghai; Shanghai science and technology press, 1984
Currently, there is no exact formula for calculating the force of support frame in machining.Since support frame machining belongs to metal milling area,which is similar to the milling mechanism.According to the empirical formula[8] , in the milling process, the main cutting force that is radial milling force Fz: FZ=CFae0.86af0.72dt0.86apzkF, (1) among them, ---Milling coefficients CF for the different materials; ---Feed af; ---Cutter diameter dt; ---Milling depth ap; ---Cutter teeth z; --- Correction factor kF of HSS Milling ; ---Milling contact arc deep ae; Because the material is aluminum,taking the milling coefficient CF as 196,milling contact arc deep ae as 10mm, feed af as 0.1mm / z, cutter diameter as 20mm,milling
Journal of equipment manufacturing technology equipment manufacturing technology, 2013, 70-71
Shanghai; Shanghai science and technology press, 1984
Online since: June 2014
Authors: Shi Lei Chen, Xue Yuan Li, Bo Li, Kai Bian, Ying Wang Zhao
(2)
Where kx, ky and kz are values of hydraulic conductivity along the x, y, and z coordinate axes ,which are assumed to be parallel to the major axes of hydraulic conductivity(Lt-1) ;h is the potentiometric head (L); ε is a volumetric flux per unit volume and represents sources and/or sinks of water(t-1); S is the specific storage of the porous material(L-1),t is time(t), u is specific yield of the porous material, and p is atmospheric water infiltration recharge (Lt-1);
3.2Aquifer generalization and time and space discretion
According to stratum and lithology, etc. the whole underground water regime was divided into three layers; the upper layer is unconfined aquifer, the middle layer is aquitard and the bottom layer is deep confined aquifer.
Every layer was regarded as heterogeneous anisotropic porous material and had hydraulic connection among each other.
Recoverability of deep fresh groundwater resources in the saline water area [J].resources science,2010,32(6):1188-1195.
Earth and Planetary Science Letters, 2011, 303(1): 48-58
(In Chinese) [6] Lizhi Yang,Chunhua Liu,Zhongye Liu.Identification of threshold value of land subsidence caused by exploiting deep groundwater in Dezhou[J].Journal of Water Resources & Water Engineering2010,21(5):55-61.
Every layer was regarded as heterogeneous anisotropic porous material and had hydraulic connection among each other.
Recoverability of deep fresh groundwater resources in the saline water area [J].resources science,2010,32(6):1188-1195.
Earth and Planetary Science Letters, 2011, 303(1): 48-58
(In Chinese) [6] Lizhi Yang,Chunhua Liu,Zhongye Liu.Identification of threshold value of land subsidence caused by exploiting deep groundwater in Dezhou[J].Journal of Water Resources & Water Engineering2010,21(5):55-61.
Online since: July 2013
Authors: Hao Zhang, Wei Pang, Dai Hua Zhang, Hong Yuan Zhao
A strong need exists for developing accurate, cheap and reliable chemical sensors to measure relative humidity (RH) in different ambient for practical applications in the fields of meteorology, medicine, comfort, agriculture, process control, food science [2,3] and so on.
In fact, excessive penetration of the water vapor into PVA polymer may cause the long chains of the polymer to diffuse with its structure changing dramatically, leading to significant change of the material properties such as acoustic impedance, density, etc..
Acknowledgement This work was supported by National Natural Science of China Foundation under Grant Nos. 61176106 and 61006074, and Specialized Research Fund for the Doctoral Program of Higher Education under Grant No. 20100032120056.
Lu, Humidity sensors: A review of materials and mechanisms, Sensor Letters 3 (2005) 274-295
Luo, Chemically Sensitized Thin-Film Bulk Acoustic Wave Resonators as Humidity Sensors, Journal of the Electrochemical Society 157 (2010) J419-J424.
In fact, excessive penetration of the water vapor into PVA polymer may cause the long chains of the polymer to diffuse with its structure changing dramatically, leading to significant change of the material properties such as acoustic impedance, density, etc..
Acknowledgement This work was supported by National Natural Science of China Foundation under Grant Nos. 61176106 and 61006074, and Specialized Research Fund for the Doctoral Program of Higher Education under Grant No. 20100032120056.
Lu, Humidity sensors: A review of materials and mechanisms, Sensor Letters 3 (2005) 274-295
Luo, Chemically Sensitized Thin-Film Bulk Acoustic Wave Resonators as Humidity Sensors, Journal of the Electrochemical Society 157 (2010) J419-J424.
Online since: September 2014
Authors: Chang You Wu, Yi Liu
Space Design in Starbucks from the Perspective of Behavioral Psychology
Changyou Wu1, a, Yi Liu2,b
1Wuhan University of Science and Technology , Wuhan City , China
2Wuhan University of Science and Technology , Wuhan City , China
awucy1168@sina.com, b1213943122@qq.com
Keywords: Architecture, behavior and psychology, Starbucks, experiential marketing
Abstract.
On the one hand, experiential economy will provide a comfortably material consumption space for consumers; on the other hand, it also provides the consumer space of psychological experience for consumers.
Fudan Journal: Philosophy and Social Sciences, 2010(5).
Interior Material Design and Social Psychology.http://blog.sina.com.cn/ap02032916360.
On the one hand, experiential economy will provide a comfortably material consumption space for consumers; on the other hand, it also provides the consumer space of psychological experience for consumers.
Fudan Journal: Philosophy and Social Sciences, 2010(5).
Interior Material Design and Social Psychology.http://blog.sina.com.cn/ap02032916360.
Online since: September 2011
Authors: Xue Song Huang, Ning Peng
6-Gingerol Function Against Fatigue1
Xuesong Huang, Ning Peng
Department of Food Science and Engineering,Jinan University,No.601,West Huangpu Road, Guangzhou, China
thxs@jnu.edu.cn;pn333@126.com
Keywords: 6-gingerol; fatigue; glycogen; lactic acid; uera nitrogen; ginger (Zingiber officinale Roscoe).
II.Materials and Methods A.
Materials Muscle glycogen kit, hepatic glycogen kit, lactic acid kit and urea nitrogen kit were all purchased from Nanjing Jianchen Biotechnology Research Institute. 6-Gingerol war prepared according to the methods similar to the paten described [9].
Kim, [6]-Gingerol inhibits metastasis of MDA-MB-231 human breast cancer cells, Journal Of Nutritional Biochemistry, vol.19,pp. 313-319,2008
Hajime, The anti-ulcer effect in rats of ginger constituents, Journal Of Ethnopharmacology, vol.23,no.2-3,pp. 299-304, 1988
II.Materials and Methods A.
Materials Muscle glycogen kit, hepatic glycogen kit, lactic acid kit and urea nitrogen kit were all purchased from Nanjing Jianchen Biotechnology Research Institute. 6-Gingerol war prepared according to the methods similar to the paten described [9].
Kim, [6]-Gingerol inhibits metastasis of MDA-MB-231 human breast cancer cells, Journal Of Nutritional Biochemistry, vol.19,pp. 313-319,2008
Hajime, The anti-ulcer effect in rats of ginger constituents, Journal Of Ethnopharmacology, vol.23,no.2-3,pp. 299-304, 1988
Online since: September 2013
Authors: Yun Xia Jiang, Hu Jin Zuo, Yong Jia Shen, Feng Ping Yi
Synthesis of 5-cyano-3-(4-chlorobutanoyl)indole in 1-buty-3-methylimidazolium chloroaluminate
Jiang Yunxia1,2,a , Zuo Hujin2,b , Shen Yongjia2,c and Yi Fengping3,d
1 Nantong Agricultural Vocational Technology College, Nantong, Jiangsu 226007,China
2 Key Laboratory for Advanced Materials, Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, China
3School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 200235, China
ayunxia98@163.com, brambo.hero-123@163.com, cyjshen@ecust.edu.cn , dyifengping@sit.edu.cn
Keywords:Friedel-Crafts acylation, ionic liquid, [bmim]Cl/AlCl3, 5-cyano-3-(4-chlorobutanoyl)indole
Abstract.The Friedel-Crafts acylation reaction between 5-cyanoindole and 4-chlorobutyryl chloride was conducted in ionic liquid 1-buty-3-methylimidazolium chloroaluminate ([bmim]Cl/AlCl3), the major product was 5-cyano-3-(4- chlorobuty)indole.
Experimental Materials and instruments N-methylimidazole was purchased from Aladdin Chemistry Co.
Cheng, Friedel-Crafts acylation of anthracene with oxalyl chloride catalyzed by ionic liquid of [bmim]Cl/AlCl3.Chemical Engineering Journal.146(2009)266-269
Journal of Organometallic Chemistry, 690(2005)3609–3613
Experimental Materials and instruments N-methylimidazole was purchased from Aladdin Chemistry Co.
Cheng, Friedel-Crafts acylation of anthracene with oxalyl chloride catalyzed by ionic liquid of [bmim]Cl/AlCl3.Chemical Engineering Journal.146(2009)266-269
Journal of Organometallic Chemistry, 690(2005)3609–3613
Online since: January 2015
Authors: Piotr Szota, Seweryn Wąsek, Andrzej Stefanik, Sebastian Mróz
Introduction
From the available literature [1–3], it can be found that Al-Cu, copper – steel or steel – corrosion-resisting steel still enjoy broad interest by both science and industry.
Milenin, Theoretical and experimental analysis of the rolling process of bimetallic rods Cu-steel and Cu-Al, Journal of Materials Processing Technology 153, 154 (2004) 100–107
Korczak, Changes of pass geometry of the system of oval and vertical oval stretching passes in the rolling process, Journal of Materials Processing Technology 80, 81 (1998) 361–364
Milenin, Theoretical and experimental analysis of the rolling process of bimetallic rods Cu-steel and Cu-Al, Journal of Materials Processing Technology 153, 154 (2004) 100–107
Korczak, Changes of pass geometry of the system of oval and vertical oval stretching passes in the rolling process, Journal of Materials Processing Technology 80, 81 (1998) 361–364