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Online since: September 2013
Authors: Jiu Yin Pang, Shi Cheng Zhang, Zhen Guo Gao
Density distribution of the thickness direction can be changed by the adjustment of the hot-pressing process, and change the structure of the slab.
Chemistry and industry of forest products, 2008,28(1):16~22
Online since: September 2016
Authors: Sophia Arnauts, Dennis H. van Dorp, Frank Holsteyns, Graniel Abrenica
After the 130nm node, equivalent scaling based on judicious materials selection took over from dimensional scaling: straining the Si channel by means of epitaxial strained SiGe source and drain structures boosted mobility and hence drive currents (90-65 nm node), high-k oxides helped reducing gate leakage (65-45 nm node), Trigate or FinFET transistors allow better electrostatic control (22-10nm nodes).
Besides the striking similarity between Ge and III-As in HCl based chemistries, the etching control of the group IV semiconductor up to (sub) atomic-layer-scale shows that aqueous systems are excellent candidates for advanced CMOS processing.
Online since: July 2014
Authors: Hong Jing Jia, Cong Bin Fan, Ying Long Fu
Research on Photochromic Compounds with Synthesis and Properties of a Novel Unsymmetrical Diarylethene with a Benzothiophene and a Pyrrole Group Hongjing Jia, Yinglong Fu and Congbin Fan * Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, P.
The structure of compound 1o was confirmed by 1H NMR spectroscopy.
Online since: September 2013
Authors: Torranin Chairuangsri, John T.H. Pearce, Amporn Wiengmoon, Pattama Apichai
Pearce3,c and Torranin Chairuangsri4,d 1Department of Physics, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand 2Faculty of Science, Lampang Rajabhat University, Lampang, 52100, Thailand 3National Metal and Materials Technology Center, Pathumthani, 12120, Thailand 4Department of Industrial Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50202, Thailand.
OM images compare the microstructure of eutectic structure: (a) as-cast condition, (b) after solution treatment and (c) after solution treatment plus aging at 170°C for 24 hours.
Online since: March 2013
Authors: Jayabharathi Jayaraman, Jayamoorthy Karunamoorthy
Sensing nanoparticulate ZnO with benzimidazole derivative by fluorescence Jayabharathi Jayaraman1,a and Jayamoorthy Karunamoorthy1 1Department of Chemistry, Annamalai University, Annamalainagar 608 002, India aEmail: jtchalam2005@yahoo.co.in Keywords: Sensor, SEM, EDX, Impedance, Fluorescence Abstract A sensitive benzimidazole derivative fluorescent sensor for nanoparticulate ZnO has been designed and synthesized.
The crystal structures of undoped and doped ZnO are primitive hexagonal with crystal constants a and b as 3.249A° and c as 5.025 A°.As there is no change in the crystal parameters on doping ZnO with silver, the larger Ag+ (radius 1.22 A°) cannot be incorporated in the ZnO lattice; the radius of Zn2+ is 0.72 A°.
Online since: March 2012
Authors: Shou Zhi Pu, Hui Li, Xiao Ting Li
Photochromic, Kinetics, and Fluorescence of A Novel Diarylethene Xiaoting Li, Shouzhi Pu* and Hui Li Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University Nanchang 330013, P.R.
The structure of compound 1o was characterized by 1H NMR spectroscopy. 1H NMR (400 MHz, CDC13): δ 1.04 (t, 3H, -CH3),2.26 (d, 6H, -CH3), 2.53-2.62 (m, 2H,-CH2-), 6.75 (s, 1H, thiophene-H), 7.40-7.43 (m, 2H, Ar-H), 7.47-7.49 (d,1H, J = 7.6 Hz, Ar-H),7.56-7.58 (d, 1H, J = 7.6 Hz, Ar-H).
Online since: March 2012
Authors: Cun Jing Wang, Li Zhang
The catalytic properties of the anodic aluminum oxide template in synthesis of carbon nanotubes Li Zhang1,a and Cunjing Wang1,b College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China bemail: wangcunjing@126.com Keywords: Carbon nanotubes; Chemical vapor deposition; anodic aluminum; template Abstract.
Jeong [6] also showed that CNTs synthesized by the pyrolysis of C2H2 at 650℃ in an AAO template with or without Co catalysts had the same tube wall structures consisting of numerous stacked carbon flakes, instead of straight coaxial cylindrical graphitic units.
Online since: April 2014
Authors: Xiao Meng, Xian Bing Wu, Wu Qun Cheng
To achieve this aim, the author first grasp the content level, weight and internal relation, based on the teaching content of priorities and students' knowledge structure, centering on the syllabus, teaching " draw in Pyramid ".
[2] Cheng Sikun, Xin Chunyan, Liu Peng and He We: Analysis of Gradual Pedagogy in Analytical Chemistry Teaching.
Online since: August 2010
Authors: C.W. Cheng, J.S. Chen, P.X. Lee, C.W. Chien
Top view Side view 1.5mm 0.13mm 0.13mm (a) 0.5 mm (b) 0.5 mm A (c) 10 um (d) Fig. 8: (a) Schematic illustration of a U-shaped microchannel, (b)-(c) top view and incline view microscope images of the fabricated microchannel, and (d) magnified view of the area A of Fig. 8(c) Side view 2mm 0.2mm 0.2mm Top view (a) 200 um B (b) 20 um (c) Fig. 9: (a) Schematic illustration of a arc-type microchannel, (b) top view microscope images of the fabricated microchannel filled with red ink, and (c) magnified view of the area B of Fig. 9(b) Conclusions The experimental results showed that microstructure sizes of less than 10 µm can be fabricated on the surface and inside the photosensitive glass by using a femtosecond laser direct write manufacturing process followed by heat treatment and chemical etching in an HF solution. 3D microchannel structures were fabricated inside the photosensitive glass, a process which could be applied in
the fields of biotechnology and micro-fluidics for chemistry in the future.
Online since: May 2010
Authors: Ye Fei Li, Fang Yu Li, Jiang Hui, Fang Huang
Technical Design Structure Design Detail Design Concept Design Anthropometry Ergonomic Centered Design Product Design Comfort Model Experiments Regression Fig. 1 Design Strategy based on Anthropometry To design ergonomic-centered products, all sizes concerned with human should be determined by the customers.
Ergonomics in Product Design, Beijing: Chemistry Industry Press (2004) [6] DING Yulang.