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Online since: June 2010
Authors: Ying Cheng Hu, Bing Xue
There were four
compression ratios for different ply numbers of LVL, 8.1% for eight-ply samples, 18.3% for nine-ply
samples, 26.5% for ten-ply samples, 33.1% for eleven-ply samples, respectively.
Introduction Laminated veneer lumber (LVL) is an engineered wood product manufactured from veneers that are rotary peeled, dried and laminated together with parallel oriented grains under heat and pressure with a waterproof adhesive.
There were four compression ratio for different ply number of LVL, 8.1% for eight-ply samples, 18.3% for nine-ply samples, 26.5% for ten-ply samples, 33.1% for eleven-ply samples, respectively.
Introduction Laminated veneer lumber (LVL) is an engineered wood product manufactured from veneers that are rotary peeled, dried and laminated together with parallel oriented grains under heat and pressure with a waterproof adhesive.
There were four compression ratio for different ply number of LVL, 8.1% for eight-ply samples, 18.3% for nine-ply samples, 26.5% for ten-ply samples, 33.1% for eleven-ply samples, respectively.
Online since: September 2019
Authors: Faouzi Hanini, Mourad Khechba, Abderrahmane Bouabellou, Somia Gattal, Hichem Farh
The number of layers was fixed at 03, but the immersion time varied between 01 to 10 minutes.
To obtain with higher thickness films, the sequence of dipping, drying and then dipping again was performed a number of times.
This might be attributed to the slight increase in grain size and the homogeneity of the structure.
To obtain with higher thickness films, the sequence of dipping, drying and then dipping again was performed a number of times.
This might be attributed to the slight increase in grain size and the homogeneity of the structure.
Online since: October 2015
Authors: M. Raghasudha, D. Ravinder, P. Veerasomaiah
According to this, dielectric material has well conducting grains separated by highly resistive grain boundaries.
On the application of electric field, space charge accumulates at the grain boundaries and voltage drops mainly at grain boundaries [42].
Koops proposed that grain boundary effect is more at low frequencies [42].
Moreover, the dielectric loss tangent also depends on a number of factors such as stoichiometry, Fe2+ content, and structural homogeneity which in turn depend upon the composition and sintering temperature of the samples [46].
Makino, ‘Core losses and magnetic properties of Mn-Zn ferrites with fine grain sizes’, J.
On the application of electric field, space charge accumulates at the grain boundaries and voltage drops mainly at grain boundaries [42].
Koops proposed that grain boundary effect is more at low frequencies [42].
Moreover, the dielectric loss tangent also depends on a number of factors such as stoichiometry, Fe2+ content, and structural homogeneity which in turn depend upon the composition and sintering temperature of the samples [46].
Makino, ‘Core losses and magnetic properties of Mn-Zn ferrites with fine grain sizes’, J.
Online since: February 2012
Authors: Na Chen, Jin Gang Chen, Jun Li Yang
A large number of stress-strain data are obtained.
The sand particle diameter is below 5mm, the grain size distribution belongs to grade Ⅱ, fineness modulus 2.4, medium sand, and the apparent density is 2.5g/cm3.
Fig.1 The model of filled fracture with variable medium Table 1 Parameters of filled fractures Sample number Fracture width /mm Filling medium Thickness /mm Variation (Water ratio /%) Volume /cm3 Density /g/cm3 Weight /g 5-3 5.8 5.8 10 28.37 1.13 32 5-4 6.1 6.1 20 30.19 1.16 35 5-5 5.2 5.2 30 25.33 1.18 30 6.5-3 6.3 6.3 10 30.75 1.30 40 6.5-4 6.9 6.9 20 33.81 1.33 45 7.5-1 7.8 7.8 30 38.45 1.22 47 10-3 11.6 11.6 10 57.42 1.24 71 10-4 11.2 11.2 20 55.00 1.27 70 10-5 10.7 10.7 30 52.01 1.27 66 Experimental design The experiment is conducted in mechanics laboratory center in Zhengzhou University.
The sand particle diameter is below 5mm, the grain size distribution belongs to grade Ⅱ, fineness modulus 2.4, medium sand, and the apparent density is 2.5g/cm3.
Fig.1 The model of filled fracture with variable medium Table 1 Parameters of filled fractures Sample number Fracture width /mm Filling medium Thickness /mm Variation (Water ratio /%) Volume /cm3 Density /g/cm3 Weight /g 5-3 5.8 5.8 10 28.37 1.13 32 5-4 6.1 6.1 20 30.19 1.16 35 5-5 5.2 5.2 30 25.33 1.18 30 6.5-3 6.3 6.3 10 30.75 1.30 40 6.5-4 6.9 6.9 20 33.81 1.33 45 7.5-1 7.8 7.8 30 38.45 1.22 47 10-3 11.6 11.6 10 57.42 1.24 71 10-4 11.2 11.2 20 55.00 1.27 70 10-5 10.7 10.7 30 52.01 1.27 66 Experimental design The experiment is conducted in mechanics laboratory center in Zhengzhou University.
Online since: November 2011
Authors: Shu Hong Tang
The result shows that this system can measure the size of impurity particles of XLPE cable materials correctly, it also can find out the accurate location and numbers of impurity particles.
Therefore, some means of testing are needed to detect the number and size of the defects in the crosslinked polyethylene material [1-3].
Since each pixel length of CCD device TCD132D is 14μm, as long as the number of pixels are calculated, the pixel size can be determined.
By the above measured points, the number of pixels and pixel size can be determined respectively.
When defect size is greater than 1000μm, it is needless to determine the specific size, only define them as bulky grains.
Therefore, some means of testing are needed to detect the number and size of the defects in the crosslinked polyethylene material [1-3].
Since each pixel length of CCD device TCD132D is 14μm, as long as the number of pixels are calculated, the pixel size can be determined.
By the above measured points, the number of pixels and pixel size can be determined respectively.
When defect size is greater than 1000μm, it is needless to determine the specific size, only define them as bulky grains.
Online since: August 2012
Authors: Yu Jian Yang, Shu Yun Liu, Wen Jie Feng, Ming Hua Shang
The results also indicated that the estimation accuracy depended on the threshold of sampling numbers, if the numbers are less than the threshold, the sampling density is in contact with the spatial estimation accuracy, if the numbers are more than the threshold, the density of the sampling numbers is improved, but the estimation results are not proportional to the density.
If the numbers are more than the threshold, the density of the sampling numbers is improved, but the estimation result is not proportional to the density, as illustrated in Figure 4 and Figure 5.
The estimation accuracy depended on the threshold of sampling numbers.
If the numbers are more than the threshold, the density of the sampling numbers is improved, but the estimation results are not proportional to the sampling density.
*The National Key Technology R&D Project “study and demonstration of grain risk, warn prognosis and intelligent analysis”(2009BADA9B03)and Innovation Fund Projects of Shandong Academy of Agricultural Science(SAAS).
If the numbers are more than the threshold, the density of the sampling numbers is improved, but the estimation result is not proportional to the density, as illustrated in Figure 4 and Figure 5.
The estimation accuracy depended on the threshold of sampling numbers.
If the numbers are more than the threshold, the density of the sampling numbers is improved, but the estimation results are not proportional to the sampling density.
*The National Key Technology R&D Project “study and demonstration of grain risk, warn prognosis and intelligent analysis”(2009BADA9B03)and Innovation Fund Projects of Shandong Academy of Agricultural Science(SAAS).
Online since: January 2011
Authors: Ci Li Li, Chun Ran Han
Introduction
kidney beans (Phaseolus vulgaris L)belong to Papilionaceae, Phaseolus,which are not only rich in nutrients, but also have medical effects, not only traditional grains, but also modern healthy foods, and are popular in both domestic and foreign markets.
In this study, 10 g of soybeans were soaked in water and 90 ml of water was added to grind, after filtration, 2% of which was added to the kidney bean cultivation juice, cultivate at 37℃, and determine the number of the living bacteria.
Tomato juice, wort, and soybean milk was added as growth promoting substances to the kidney bean cultivation juice at the amount of 3%,after cultivation at 37℃ for some time, the living numbers of bacteria was shown in Figure 4.
Figure 4 Growth curve after addition of growth promoting substances From Fig 4, we can see that all the substances added can improve the growth of lactic acid bacteria, after the addition of soybean juice, the increase of the bacteria number was very obvious, because there was very rich nitrogen compounds in soybean juice, which had significant effect on the growth of lactobacillus, so soybean milk was selected as the growth promoting substance.
In this study, 10 g of soybeans were soaked in water and 90 ml of water was added to grind, after filtration, 2% of which was added to the kidney bean cultivation juice, cultivate at 37℃, and determine the number of the living bacteria.
Tomato juice, wort, and soybean milk was added as growth promoting substances to the kidney bean cultivation juice at the amount of 3%,after cultivation at 37℃ for some time, the living numbers of bacteria was shown in Figure 4.
Figure 4 Growth curve after addition of growth promoting substances From Fig 4, we can see that all the substances added can improve the growth of lactic acid bacteria, after the addition of soybean juice, the increase of the bacteria number was very obvious, because there was very rich nitrogen compounds in soybean juice, which had significant effect on the growth of lactobacillus, so soybean milk was selected as the growth promoting substance.
Online since: April 2007
Authors: Long Tu Li, Jian Qiang Zhao, Zhen Xing Yue, Wei Qiang Wang
Introduction
Lead zirconate titanate (PZT) perovskite ferroelectric ceramics have been considered for a number of
applications in actuators and nonvolatile memories [1,2].
After all, space charges and the local alignment of defect dipoles could be easily formed at domain walls or grain boundary under driving field.
Different samples were used for different cycling numbers.
(a) Correlation between d33 and ε before and after fatigue under all cycling fields; (b) d33 and ε as a function of cycle number.
After all, space charges and the local alignment of defect dipoles could be easily formed at domain walls or grain boundary under driving field.
Different samples were used for different cycling numbers.
(a) Correlation between d33 and ε before and after fatigue under all cycling fields; (b) d33 and ε as a function of cycle number.
Online since: October 2014
Authors: Vithyacharan Retnasamy, Zaliman Sauli, Hussin Kamarudin, Chai Jee Keng, Moganraj Palianysamy
Focusing to the material of interest which is the ITO, it has a number of critical problems.
The films were deposited with varied time and number of layers.
Table 1 :ITOSample description Sample Number Of Layers Deposition Time(min) 1 1 5 2 2 10 3 3 15 4 4 20 5 1 30 6 2 60 7 3 90 8 4 120 The samples are analyzed for its reflectance using the Perkin Elmer Lambda 950 UV/Vis/NIR Spectrophotometer.
Nano-grained thin-film indium tin oxide gas sensors for H2 detection.
The films were deposited with varied time and number of layers.
Table 1 :ITOSample description Sample Number Of Layers Deposition Time(min) 1 1 5 2 2 10 3 3 15 4 4 20 5 1 30 6 2 60 7 3 90 8 4 120 The samples are analyzed for its reflectance using the Perkin Elmer Lambda 950 UV/Vis/NIR Spectrophotometer.
Nano-grained thin-film indium tin oxide gas sensors for H2 detection.
Online since: February 2012
Authors: Ricardo Alcántara, José L. Tirado, Carlos Pérez-Vicente, Uche G. Nwokeke, Francisco Nacimiento, José R. González
The specific capacity as function of cycle number is shown in Fig. 10.
The absence of narrow and intense peaks let us to discard the occurrence of large grains of crystalline LixSn phases.
Capacity vs. cycle number.
The Rsl values are 81.3 and 74.5 Ohm for the cycle number 18 to 30, respectively.
The Rct values are 309.9 and 307.9 Ohm for the cycle number 18 and 30, respectively.
The absence of narrow and intense peaks let us to discard the occurrence of large grains of crystalline LixSn phases.
Capacity vs. cycle number.
The Rsl values are 81.3 and 74.5 Ohm for the cycle number 18 to 30, respectively.
The Rct values are 309.9 and 307.9 Ohm for the cycle number 18 and 30, respectively.