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Online since: April 2011
Authors: Bao Min Wang, Wei Liu, Li Yan Zhao
Rubber powder mainly improves the internal structure of concrete by physical effect without changing the chemical properties of various materials in cement concrete.
Cement composition and physical parameters Chemistry [%] Loss in calcination [%] Specific surface area Setting time [min] Soundness MgO SO3 2.07 373 Initial setting Final setting Boiling 4.78 2.26 180 245 OK Table 2.
Proceedings of the International Workshop on Life Cycle Management of Coastal Concrete Structures Hangzhou. 2008.9:1-4
Online since: July 2012
Authors: Amporn Poyai, Jafar Khan Kasi, Ajab Khan Kasi, Nitin Afzulpurkar, W.A.H.S.S Wewala, Dhananjay W. Bodhale
The separator plain planar structure offers easy fabrication and makes it perfect with on-chip microfluidic systems for integration, like continuous separation and filtration applications[5].
A simple planar structure microfluidic channel design can be effortlessly integrated with on-chip microfluidic components for extraction and filtration of broad range of particle sizes.
Park, High throughput inertial separation of cancer cells from human whole blood in a contraction–expansion array microchannel,15th International Conference on Miniaturized Systems for Chemistry and Life Sciences Washington, USA (2011) 2065-2067 [3] A.
Online since: May 2014
Authors: Shi Fa Wang, Q.P. Ding, X.T. Zu
It is known that the variation of coercivity (Hc ) value with particle size can be explained on the basis of critical diameter, domain structure, and the anisotropy of the crystal.[17] Therefore, it is commonly expected as the particle size decreases, coercivity (Hc) increases.
Lu, Magnetic nanocomposites with mesoporous structures: synthesis and applications, Small, 7 (2011) 425-443
Feng, Size-controlled synthesis of BiFeO3 nanoparticles by a soft-chemistry route, J.
Online since: August 2013
Authors: Tao Ma
A Study on Moulding Technology of Starch-Based Totally-Biodegradable Plastic Products Tao Ma1, a 1Institute of Grain and Oil Science, Bohai University,College of Chemistry, Chemical Engineering and Food Safety, Bohai University, Jinzhou, Liaoning, 121013, China) aemail: matao-09@163.com Keywords: totally-biodegradable; moulding technology; starch Abstract.
Result of nature test: according to GB/T 4456-1996 (National center of plastics test) Sample name 1 2 Starch content(%) 40 60 Density(g/cm3) 1.24 1.28 Water sorption(%) 2.26 4.63 Vicat softening point(˚C) 117 138 Melting index(g/10min) 8.2 5.1 Decomposition TMP(˚C) 205 220 Impact strength(N/m) 5.85 3.57 Stretching strength(MPa) 9.64 11.16 Biodegradation ratio in 30 days (%) 54.2 70.6 Analysis of the structure of starch-based biodegradable tray made by the technology of sucking moulding.
Besides, starch particles often form large grains of microcrystal structure because of the agglomeration caused by the interaction among its many hydroxyl groups, which resulted in a bad compatibility with the apolar high polymer.
Online since: February 2018
Authors: Wen Yong Xu, Zi Chao Peng, Mu Zi Li, Minh Son Pham
The preference for these mechanisms is dependent on factors such as alloy chemistry, the initial microstructure, stress, and temperature [3-16].
Analysis of the post creep deformation structure was performed on a JEOL JEM-2100F TEM operating at 200kV.
Propagation of a/2<110> dislocations between the secondary γ ′ precipitates is quite easy that explains the corresponding dislocation structures and the poor creep resistance compared to samples containing more tertiary γ ′ precipitates.
Online since: October 2014
Authors: Shu Zhong Wang, Ming Luo, Jia Bin Zhu
According to the structure of the granulator, the current granulators can be divided into smooth granulators and non-smooth granulators.
However, the structure of non-smooth granulator is more complex.
[14] L.M.Zhao, H.Wang, S.Qing, et al.: Journal of Natural Gas Chemistry, Vol.19 (2010) No.4, p.403-408
Online since: May 2012
Authors: Jin Yu, Yan Yan Cai, Bo Xue Song, Xu Chen
For rock engineering, the damage criteria of rock structures are generally regulated according to the threshold values of wave amplitudes, such as peak displacement, peak particle velocity and peak acceleration.
Therefore, the prediction of wave attenuation across jointed rock masses is important for assessing the stability and damage of rock structures under dynamic loads.
Kern: Physics and Chemistry of the Earth (A), 25 (2):149-154(2000)
Online since: July 2016
Authors: Tatyana L. Rakitskaya, Alla S. Truba, V.Ya. Volkova, A.A. Ennan
Volkova1 1Faculty of Chemistry, Odessa I.I.
Asakura, Structure of MnOx/Al2O3 Catalysts: A study using EXAFS, in situ laser Raman spectroscopy and at calculations, J.
Jiang, The effects of Mn loading on the structure and ozone decomposition activity of MnOx supported on activated carbon, Chinese J.
Online since: August 2013
Authors: Lei Jin, Hu Biao Fang, Cheng Qiao Cao, Hua Jun Luo, Nian Yu Huang
Synthesis and in Vitro Anti-ulcer Effect of Triazolo-methyl Tetrahydrobenzofuran Oxime Ether Derivatives Hubiao Fang1,a, Lei Jin1,b, Chengqiao Cao1,c, Huajun Luo1,d, Nianyu Huang1,e,* 1Hubei Key Laboratory of Natural Products Research and Development, College of Chemistry and Life Sciences, China Three Gorges University, Yichang, Hubei 443002, China 2Hubei Tujia Institute of Medicine, China Three Gorges University, Yichang, Hubei 443002, China afhb147127@live.cn, b568346914@qq.com, c1091715284@qq.com, dluohuajun@21cn.com, ehny115@126.com Keywords: Anti-ulcer agent, H+/K+-ATPase inhibitory activity, triazole, oxime ether, synthesis Abstract.
Results and discussion Synthesis and structure elucidation The triazolo-methyl tetrahydrobenzofuran oxime ethers were synthesized by the Cu(II)-catalyzed Huisgen 1,3-dipolar cycloaddition [17] of alkyne and azide (Scheme 1), and all of the oxime ether intermediates and target compounds were elucidated by NMR, IR, ESI-MS and elemental analysis.
Further efforts to address the structure-activity relationship of these triazolo-methyl tetrahydrobenzofuran oxime ethers derivatives and their gastric cytoprotective mechanism would be reported in due course.
Online since: February 2008
Authors: Jérôme Gavillet, Stéphane Getin, Etienne Quesnel, Steve Martin, Guillaume Delapierre, Karla Hiller, Joerg Nestler, Thomas Gessner, Juergen Soechtig, Guy Voirin, Lukas Buergi, Janko Auerswald, Helmut F. Knapp, Stanley Ross, Samuel Bigot, Markus Ehrat, Andreas Lieb, Marie Claire Beckers, Damien Dresse
PECVD films provide unique advantages due to the ability to control topography and film thickness on the micro and nanoscale, and control surface chemistry in a precise manner through chemical coupling and precursors tayloring.
The integration of optical components is planned in two steps: first demonstrators (2007) will contain the waveguide, the SPR layer system and grating structures for in coupling and out coupling the light from/to external sources/detectors, whereas the final devices (2008) will use fully integrated active optics (PLED, spectrometer, detector (PPD)).
The original grating micro-structure is fabricated by e-beam writing and, after processing, electroformed to a nickel shim for the replication process (hot embossing or injection moulding).