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Online since: March 2015
Authors: Lan Ma, Shao Li Yang, Jin Tao Zhao
Table 2 Physical Properties of Wet Pellets Concentrate Powder Mixing Time(min) Shatter Strength (times/pellet) Compressive Strength (N/pellet) Number of Pellets Bursting at 500℃ LM 8 2.4 53.86 2 HL 11 3.2 69.86 0 SX 12 4.2 84.44 0 Influences of the Concentrate Powder’s Grading Parameters and Fineness Modulus on the Properties of Pellets.
Some research [4] has reported that through improving the particle sizes of iron concentrate and increasing the percentage of micro particles (grain size -0.074mm), the fineness modulus of iron concentrate powder could be decreased, and specific surface area of particles could be enlarged, strengthening the molecular forces between particle surfaces and then facilitating the interaction between the particles.
Online since: October 2023
Authors: Rostislav Drochytka, Karolína Hudec Jakubíková
The secondary fillers were selected based on an optimization calculation and were adjusted to a maximum grain size of 80 mm.
Acknowledgments This paper was supported by the project of the Internal Grant Agency of Brno University of Technology, specific research project number FAST-J-22-8031 "Study of polymeric materials for trenchless rehabilitation of sewer lines with increased chemical resistance and containing secondary raw materials."
Online since: November 2015
Authors: Nicolae Bâlc, Voicu Mager, Sorin Cosmin Cosma, Julia Kessler
Within this research, biocompatible Ti powder was used, with spherical shape of the grains and size between 15-45µm.
The authors chose the central composition planning, second order, type 2k , where k=3 (k – the number of independent parameters).
Online since: July 2012
Authors: Yuan Hu, Xing Ling Tian, Nai Sheng Li, Zhi Guo Zhang, Chang Fa Zhan
According to previous research result, the rock of Thousand Hands Bodhisattva statue is a kind of sandstone which contains mainly gray purple calcareous cemented by fine grains of feldspar and quartz . while Feldspar erodes easily[3], and Montmorillonite is a common kind of feldspar, which is a kind of sheet minerals made of very fine hydrous alumina silicates particles, it expands when contact with water, then the volume will multiply several times and turn to mash.
Fig.7 The element component of the rock surface eroded Fig.8 The element component under 50nm depth Chemical composition analysis Table1 The chemical composition of the samples obtained by XRD number mineral species and content(%) clay mineral content(%) quartz potash feldspar plagioclase calcite gypsum Dz-001 47.7 9.3 29.3 5.9 0.4 7.4 According to the table above, major components of the sandstone eroded are quartz, feldspar, a certain amount of clay mineral, calcite as cemented product, and gypsum as sedentary product.
Online since: October 2012
Authors: Annalisa Pola, Michel Suéry, Christoph Zang, Michael Modigell
Considering Fig. 5, the analogy to sifting grains with decreasing mesh openings of the sieves becomes clear.
In-situ three-dimensional microstructural investigation of solidification of an Al-Cu alloy by ultrafast x-ray microtomography, Metallurgical and Materials Transactions A, Volume 36, Number 6 (2005), p. 1515-1523 [6] N.
Online since: September 2011
Authors: M.A. Hasan, Adnan Ali, Khalid Mahmood, M. Asghar, I. Hussain, Magnus Willander
Similarly, the grain sizes, calculated by Scherrer’s formula: 26 nm, 24 nm and 22 nm for sample A, B and C, respectively.
A number of reports can be seen in the literature demonstrating the UV emission from ZnO [8-12].
Online since: September 2012
Authors: Guo Yan Zhang
With the increasing number of international cooperation among different organization and department, the attributes belonging to a user usually are monitored by different authorities.
Attribute-based encryption for fine-grained access control of encrypted data.
Online since: January 2014
Authors: Cheng Dong, Jing Rong Zou, Zhi Yong Li
In resilient modulus test, the number of load cycles is 100 times.
Fig.1 Stress-strain hysterisis loop and resilient modulus determination Table 2 Test sequence for fine-grained subgrades loading sequence confining pressure deviatoric stress vertical stress Loading times 0 30 50 80 1000 1 60 30 90 100 2 45 30 75 100 3 30 30 60 100 4 15 30 45 100 5 60 55 115 100 6 45 55 100 100 7 30 55 85 100 8 15 55 70 100 9 60 75 135 100 10 45 75 120 100 11 30 75 105 100 12 15 75 90 100 13 60 105 165 100 14 45 105 150 100 15 30 105 135 100 16 15 105 120 100 Matric suction measured by the filter paper method.When measuring the suction by the filter paper method, it has the advantages of economy, accuracy, easy to operate, and the large measurement range.
Online since: September 2014
Authors: R.J. Tian, K. Xue, Y. Tian, X.C. Wang, Y.M. Shi, X. Ma, Y.H. Ding
Suppose the number of the carriers is P, the length of cyclic prefix is L = max(Lsd , Lsr , Lrd).
Normalize rR by ErR2 =2Gsr KT E + N0 to ensure P average energy, we have r R = 2GsrKTE/2GsrKTE+N0HsrQHx + nR (1) In the second P-time slots, the received signal at the destination is a scaled version of the signal received from the relay in the first P-time slots, rD2 = 2Grd1-KTEQHrdrR + nD2 = 4GsrGrdKT1-KTE2/2GsrKTE+N0DrdDsr x + nD2 (2) The Pairwise Error Probability and Diversity Grains For a transmitted symbol block s, conditional pairwise error probability (PEP) for a given channel is the probability of deciding in favor of another block s′Denote x = Θs, e = s − s′, u =Θ (s − s′) = Θe,where Θ is a linear precoder [7] to extract the maximum diversity gain.
Online since: January 2013
Authors: Ke Gao, Yun Fang Meng, De Zhi Wang, Yong Qi Wei
Introduction In recent years, the global scrap tires of automobile have grown up to 3 billion with an increasing rate of more than 1 billion a year, and the number of waste rubber products and leftover materials from rubber industries has also been shooting up [1, 2].
The Chinese ISO Standard sand was used as natural sand.Recycled sand was obtained through crushing abandoned concrete, with the particle size of less than 4.75mm, apparent density of 2.45 g/cm3, bulk density of 1.2 g/cm3, fineness modulus of 2.9, belong to medium grained sand.
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