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Online since: March 2017
Authors: Nicolae Ţăranu, Alexandru Secu, Ana Raluca Roşu, Dragoş Ungureanu, Ion Florenţa
The value of the horizontal displacement of a light timber-framed wall, with four main components is calculated using the following equation [8]:
(3)
where:
Δsh is the horizontal displacement due to the deformation of the sheeting to framing connections, in mm;
Δh is the horizontal displacement due to the rigid-body rotation, in mm;
Δa is the horizontal displacement due to the rigid-body translation, in mm;
Δp is the horizontal displacement due to the shear deformation of the sheeting-panel, in mm;
is a parameter related to the sheeting-panel dimensions;
is the applied horizontal load, in N;
is the fasteners spacing, in mm;
is the wall length, in mm;
is the number of braced sides of the wall;
is the fasteners stiffness, in N/mm;
is the height of the panel, in mm;
is a parameter that accounts for the distance between the hold-downs, typically [0,9; 1];
is the hold-down stiffness, in N/mm;
is the vertical distributed load, in N/mm;
is the angle-brackets
The light timber-frames are executed from fir timber having C24 strength class and a main modulus of elasticity parallel to the grain direction, E0,mean = 11000 N/mm2.
The light timber-frames are executed from fir timber having C24 strength class and a main modulus of elasticity parallel to the grain direction, E0,mean = 11000 N/mm2.
Online since: October 2017
Authors: Preeyaporn Harnkar, Avinash Patil, Chutamanut Wongyara, Tarawipa Puangpetch, Kritapas Laohhasurayotin, Cheewita Suwanchawalit
Sodium dodecyl sulfate (SDS) is anionic surfactant which is often used as a structure directing agent in the synthesis of a number of photocatalytic materials [8-9].
This enhanced crystallite size is due to the coalescence of smaller grains and the high density may be due to the better nucleation rate at higher temperatures [13].
This enhanced crystallite size is due to the coalescence of smaller grains and the high density may be due to the better nucleation rate at higher temperatures [13].
Online since: September 2013
Authors: Yan Zhao, Dao Jiang Gao, Guang Liang Xu, Dan Qin, Xin Lai, Si Wu, Hong Feng, Tao Li, Jian Bi, Chun Yan Wu
The grain size, morphology and microstructure were observed by scanning electron microscope (SEM, JSM-5900, JEOL, Japan).
At the present stage, a number of OH- ions selectively adsorbed on different crystallographic planes.
At the present stage, a number of OH- ions selectively adsorbed on different crystallographic planes.
Online since: December 2014
Authors: Bi Hao Lan, Hui Ying Chen, Zhen Tan, Xiang Wen Tong, Xiao Mei Ba
A number of new catalysts have been synthesized for the catalytic synthesis of aspirin, such as heteropolyacid[5,6],solid super acid[4], sulfated zirconia solid super acid[7], zinc oxide, calcium oxide[8], and clay[9].
Apparently, the grain size decrease with the calcination temperature increasing, which is consistent with the results of XRD.
Apparently, the grain size decrease with the calcination temperature increasing, which is consistent with the results of XRD.
Online since: July 2015
Authors: Ilare Bordeasu, Ion Mitelea, Cristian Ghera, Corneliu Marius Crăciunescu
The surfaces damaged by cavitation presents a varied topography, with big penetration depths of the cavitational erosion, due to massive evictions of ferrite grains.
ACKNOWLEDGEMENTS The support by a grant of the Romanian National Authority for Scientific Research, CNCS – UEFISCDI, project number PN-II-ID-PCE-2011-3-0837 is acknowledged.
ACKNOWLEDGEMENTS The support by a grant of the Romanian National Authority for Scientific Research, CNCS – UEFISCDI, project number PN-II-ID-PCE-2011-3-0837 is acknowledged.
Online since: September 2015
Authors: M. Venkateswara Rao
Results of Small punch test & tension test
Sample numbers
SMALL PUNCH TEST
TENSION TEST
Pmax mean
N
No of
specimens
Rm mean
N/mm2
No of
specimens
Sam-01-new tube
2370
3
427.4
2
Sam-02-serviced tube (a)
2019
3
380.6
2
Sam-02-serviced tube (b)
2134
3
402.8
2
Sam-03-serviced tube (a)
1996
3
355.3
2
Sam-03-serviced tube (b)
2025
3
363.9
2
Sam-04-serviced tube (a)
1880
3
357.4
2
Sam-04-serviced tube (b)
1990
3
374.6
2
Sam-05-serviced tube (a)
1874
3
340.0
2
Sam-05-serviced tube (b)
2014
3
364.9
2
The microstructure of the virgin tube sample reveals that grains of ferrite and perlite whereas the service exposed tube revealed speroidization, presence of fine carbides on the matrix of ferrite.
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.
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 2015
Authors: Štefánia Salokyová, Tibor Krenický
Introduction
Presently the AWJ technology is still a subject of discussion, which is proved by a number of publications.
Other conditions under which were the experiments performed: Constant material parameters: - cut material thickness 10 mm Constant technological parameters: - working medium pressure 380 MPa - abrasive type Australian garnet (AG) - abrasive grain size MESH 80 - water nozzle diameter 0.25 mm - abrasive tube diameter 1.02 mm Changing material parameters: - cut material indication steel 12 050 and 11 523 Changing technological parameters: - cutting velocity 40 mm/min, 100 mm/min and 400 mm/min Production system and place of experiments The experiments were carried out in the Liquid jet laboratory IF HGF VŠB TU in Ostrava using production system with abrasive water jet.
Other conditions under which were the experiments performed: Constant material parameters: - cut material thickness 10 mm Constant technological parameters: - working medium pressure 380 MPa - abrasive type Australian garnet (AG) - abrasive grain size MESH 80 - water nozzle diameter 0.25 mm - abrasive tube diameter 1.02 mm Changing material parameters: - cut material indication steel 12 050 and 11 523 Changing technological parameters: - cutting velocity 40 mm/min, 100 mm/min and 400 mm/min Production system and place of experiments The experiments were carried out in the Liquid jet laboratory IF HGF VŠB TU in Ostrava using production system with abrasive water jet.
Online since: May 2012
Authors: Zhi Dong Bao, Cong Jun Feng, Yue Chun Qi, Yan Jun Zhao, Xiao Qing Zhao, Liu Li
Generally, when developed in the medium-bedded, moderate-size, grain-supported medium-fine sandstone intervals, its thickness, density, number and frequency tend to get a relatively increase
Lateral distribution characteristics.After studying the developmemt position of calcareous interbeds in the coring well intervals, it shows that calcareous interbeds are more likely to develop in the underwater distributary channel, and can be partly distributed in the underwater natural levee.
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."
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."