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Online since: July 2014
Authors: Gu Hua Li, Jia Yin He
Fig. 3 SEM morphology of cement particles Fig. 4 SEM morphology of fly ash (5)Polycarboxylate superplasticizer: water reduction rate of 25%, content of 0.66%.
The above I1 to I8 eight groups, only by changing the concrete sand ratio, sand ratio gradually reduced from 45% to 31%, from the experimental data and the workability of concrete performance, sand ratio of manufactured sand concrete workability is affected.
Online since: March 2011
Authors: Robert C. Wimpory, Joana Rebelo-Kornmeier, Michael Hofmann, Jens Gibmeier
This represents an enormous reduction of the spurious strains compared to the values obtained with the traditional mosaic monochromator.
For data analysis the universal plot method was applied [15-16] using the diffraction elastic constants for ferrite calculated according to the Kröner model.
Online since: May 2011
Authors: Ping He, Yan Wang, Guang Fu Liu, Dan Zhou
Therefore, optimizing energy consumption at the stage of utilization has a remarkable significance on the reduction of energy consumption in the whole life cycle of product.
It can be seen as, based on known information and data, through corresponding theory and method, analysis and judgment of the process of energy transformation, delivery and storage as well as characteristics in the stage of utilization, so as to provide reference for the establishment of energy consumption model of the typical organizations of mechanical and electrical products as well as the product design.
Online since: September 2011
Authors: Jun He, Yu Qing Liu, Bin Han, Ai Rong Chen
To comply with the restriction, the guidelines specify the maximum spacing of the intermediate diaphragms in curved box girder bridges as (2) in which ; where LD, LDS, κ(φ,L), L and φ indicate the spacing of the intermediate diaphragms in curved box girder bridges and in straight box girder bridges (in m), the reduction factor, the span length (in m), and the central angle (in rad), respectively.
The inflection points of curves ocurred at L/R=0.23(φ=13°) in these analytical models, the relation between Ldr/L and L/R can be simplified as bilinear: when L/R<0.23, the decreased degree of Ldr/L with L/R was related to the height H, the slope K1 decreased with H, and the relation between K1 and H/L was fitted as Eq.(4); when L/R>0.23, the slope K2 almost keep invariant, and the value was assumed as 0.05 for safe side based on statistical data
Online since: November 2013
Authors: V.S. Lysenko, V. Sterligov, V. Piatnytsia, M. Spivak, V. Lozovski, Mikhail Lokshyn
Gold nanoparticles were synthesized with colloidal-chemical methods by sodium citrate reduction of potassium aurate.
New physical mechanisms of the nanoparticle antiviral activity, proposed in the present paper, are consistent with all of the currently available experimental data.
Online since: September 2013
Authors: A.G. Supri, S.N. Ishak, P.L. Teh, C.K. Yeoh, J.L. Phua
The thermal stability of the sample was measured by a thermogravimetric analysis machine (PerkinElmer TGA7), under flowing of nitrogen and data collected through Pyris software.
The critical filler concentration from the graph is at 30 vol.%, whereby at this filler content, the material did not show further reduction in the electrical resistivity.
Online since: June 2012
Authors: S.Z. Zhu, D.L. Gong, Z. Fang, Q. Xu
The fracture toughness data were based on an average of three measurements for each composition.
The reduction of porosity is attributed to quicker grain-boundary diffusion and grain-boundary migration at higher sintering temperature, which are enhanced under the presence of an electrical field.
Online since: September 2013
Authors: Zhi Juan Shen, Qiao Zhao, Yong Zhang
The role of lubricant entrapment at biological interfaces: Reduction of friction and adhesion in articular cartilage.
A biphasic viscohyperelastic fibril-reinforced model for articular cartilage: Formulation and comparison with experimental data.
Online since: November 2012
Authors: Guo Dong Zhang, Jun Yang, Jian Ling Wang, Yun Wei Tang, Zhi Gang Xie
Cracks leaking water cause reduction in strength, which results in cutting and embankment collapse, landslide, longitudinal crack and subsidence, etc.
Experimental results and data show that the use of cement to stable expansive soil can obviously improve the physical and mechanical properties of expansive soil, and its pavement performance.
Online since: December 2012
Authors: Yun Shan Wang, Shi Jing Wang, Yuan Yu, Juan Ping Li
This paper takes the wind power data of west region of Inner Mongolia as the object for research.
The surplus wind heating project can not only alleviate the contradiction in wind power development, but also promote energy-saving and emission reduction.
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