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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: May 2012
Authors: Hao Tian, Ling Zhi Li, Jian Qiang Zhu
The middle and lower reaches of the Yangtze River is an important base for producing grain, cotton and oil plants, one of the most rapidly developing areas economically in China.
Main Issues of Water Environment and Water ecology in the Middle and Lower Reaches of the Yangtze River The middle and lower reaches of the Yangtze River is an important base for producing grain, cotton and oil plants, also a region where the water resources is the most abundant in China.
A large number of sediment into Dongting Lake owing to the four rivers discharging a part of flood from the Jingjiang caused a ceaseless decrease of their inflow[2].
In the past decade or more, sewage discharge increases with the rapid economic development, water pollution in canals or lakes is difficult to control effectively because a large number of untreated industrial waste and sewage directly discharge into the freshwater system, furthermore, fertilizer and pesticides are used much in agricultural production.
However, remedial measures should be actively adopted in order to loss of grain caused by flood to the minimum.
Main Issues of Water Environment and Water ecology in the Middle and Lower Reaches of the Yangtze River The middle and lower reaches of the Yangtze River is an important base for producing grain, cotton and oil plants, also a region where the water resources is the most abundant in China.
A large number of sediment into Dongting Lake owing to the four rivers discharging a part of flood from the Jingjiang caused a ceaseless decrease of their inflow[2].
In the past decade or more, sewage discharge increases with the rapid economic development, water pollution in canals or lakes is difficult to control effectively because a large number of untreated industrial waste and sewage directly discharge into the freshwater system, furthermore, fertilizer and pesticides are used much in agricultural production.
However, remedial measures should be actively adopted in order to loss of grain caused by flood to the minimum.
Online since: October 2014
Authors: Min Zhang, Yu Xi Jia, Guo Fang Zhang
The constituent molecules number are 2 for pure PP and 3 for PA12.The constituent molecules number are 1 for PP and 10 for PA12 in the blends which means that the quality ratio is 10% for PP and 90%for PA12.
The number of configuration is set to 20.
So two parameters, n and , are used to describe the number of Gaussian beads and the interaction between beads.
So the number of two beads is both 7.
After the coarse grain step, different molecular chains can be replaced by different beads.
The number of configuration is set to 20.
So two parameters, n and , are used to describe the number of Gaussian beads and the interaction between beads.
So the number of two beads is both 7.
After the coarse grain step, different molecular chains can be replaced by different beads.
Online since: July 2014
Authors: Yue Zhou, Xin Jiao
A large number of white and green are skillfully used, giving people the feeling of solemness and beauty, and the layouts are properly arranged, outlining the beauty of simple lines.
There are kinds of patterns, grains, gourds, melons, eggplants and so on, created by brick and wood carving technology.
There are kinds of patterns, grains, gourds, melons, eggplants and so on, created by brick and wood carving technology.
Online since: December 2003
Authors: Ute Ploska, Georg Berger, Ch. Müller-Mai, Ulrich Gross
The crystallized material was crushed
and milled (grain size <45 µm).
The number of matrix vesicles per field width were estimated.
A thorough statistical analysis was not possible due to the insufficient number of specimens derived from only one animal per time interval.
The number of empty, amorphous, crystal and ruptured vesicles seemed to be less frequent than usual.
The number of matrix vesicles per field width were estimated.
A thorough statistical analysis was not possible due to the insufficient number of specimens derived from only one animal per time interval.
The number of empty, amorphous, crystal and ruptured vesicles seemed to be less frequent than usual.
Online since: August 2014
Authors: Fan Tao Kong, Shi Wei Xu, Zhe Min Li, Jian Hua Zhang
After consulting agricultural experts’ advices, 11 categories of agricultural products were determined as agricultural products object for collection, such as grain, oilseed, sugar, vegetable, fruit, meat, egg, milk, aquatic product, cotton and flax.
Table 1 is computer coding of grain, which is presented as an example to show part of computer coding of agricultural product market information.
From the classification of agricultural products, Broad category, Category, Subcategory, Group, Brand class and product name of 6 layers are Grain, Cereals, Rice, Paddy, Indica paddy, Early indica paddy, respectively.
Android (Google Corporation, USA) and IOS (Apple Inc., USA) are popular operating systems for Smart phone, which is stable, simple operation, running fast, and can also provide sufficient memory to store large number of data[25].
Spatial-temporal changes in grain production, consumption and driving mechanism in China.
Table 1 is computer coding of grain, which is presented as an example to show part of computer coding of agricultural product market information.
From the classification of agricultural products, Broad category, Category, Subcategory, Group, Brand class and product name of 6 layers are Grain, Cereals, Rice, Paddy, Indica paddy, Early indica paddy, respectively.
Android (Google Corporation, USA) and IOS (Apple Inc., USA) are popular operating systems for Smart phone, which is stable, simple operation, running fast, and can also provide sufficient memory to store large number of data[25].
Spatial-temporal changes in grain production, consumption and driving mechanism in China.
Online since: April 2018
Authors: Laurent Dubar, Mirentxu Dubar, André Dubois
Friction coefficient vs number of produced parts, PVD-CVD TiN coated tools from [29] (a), carbide tungsten extrusion tools from [30] (b)
Concerning the study of G30 carbide tungsten, die used for the forward extrusion of steel parts have been studied after the manufacturing of 0, 100000, 150000 and 220000 parts.
Surface analyses have shown that wear of tungsten tools operates in three main steps: WC grains are subjected to plastic strain and crack propagation (surface damage), then WC grains are removed from the tool surface (abrasive wear) and finally steel torn develops from the workpiece is transferred to the empty spaces between WC grains (adhesive wear) (Fig. 16-17).
Mechanical analyses performed on the tools have highlighted that the coefficient of friction was increasing almost linearly with the number of produced parts (Fig. 15b) Fig. 16.
Tungsten carbide surface damage, grain plasticity (top), adhesive wear (middle), WC grain fracture (bottom) Tribology of cold rolling: lubricant formulation surface defects, from experiment to numerical prediction.
Experimental observations aim to identify the kind of surface defect that occurs (galling, scratch, grain debonding, etc.).
Surface analyses have shown that wear of tungsten tools operates in three main steps: WC grains are subjected to plastic strain and crack propagation (surface damage), then WC grains are removed from the tool surface (abrasive wear) and finally steel torn develops from the workpiece is transferred to the empty spaces between WC grains (adhesive wear) (Fig. 16-17).
Mechanical analyses performed on the tools have highlighted that the coefficient of friction was increasing almost linearly with the number of produced parts (Fig. 15b) Fig. 16.
Tungsten carbide surface damage, grain plasticity (top), adhesive wear (middle), WC grain fracture (bottom) Tribology of cold rolling: lubricant formulation surface defects, from experiment to numerical prediction.
Experimental observations aim to identify the kind of surface defect that occurs (galling, scratch, grain debonding, etc.).
Online since: August 2021
Authors: Vasiliy S. Rudnov, Ekaterina S. Gerasimova, Rufina F. Fakhertdinova
One of the ways to solve a number of these problems is the use of fiber-reinforced concretes, but for this it is necessary to experimentally identify the deformation and strength characteristics of dispersed reinforced concretes and take it into account when calculating structures.
A scientific team of the Institute of New Materials and Technologies of the Ural Federal University is engaged in solving of this research task, which will expand a number of construction opportunities while maintaining economic feasibility in the future.
This reinforcement method has a number of disadvantages, for example, the formation of structure inhomogeneities, voids, which reduces the operational characteristics of finished products [3, 4].
Klyuyev, Experimental researches of fine-grained concrete constructions, Structural Mechanics of Engineering Constructions and Buildings. 4 (2011) 71-74
A scientific team of the Institute of New Materials and Technologies of the Ural Federal University is engaged in solving of this research task, which will expand a number of construction opportunities while maintaining economic feasibility in the future.
This reinforcement method has a number of disadvantages, for example, the formation of structure inhomogeneities, voids, which reduces the operational characteristics of finished products [3, 4].
Klyuyev, Experimental researches of fine-grained concrete constructions, Structural Mechanics of Engineering Constructions and Buildings. 4 (2011) 71-74
Online since: February 2020
Authors: Aleksandar Sedmak, Zoran Radaković, Simon Sedmak, Aleksandar Grbović
Structural integrity and life of welded joints made of a micro-alloyed low-carbon fine-grained normalised high strength pressure vessel steel, P460NL1 is presented [1].
For this purpose, a number of specimens were tested via bending moment applied to them, using RUMUL Fractomat 7609/213 device, at the Military Technical Institute in Belgrade, Serbia.
While these results were correlated to a number of other factors, as described in [1], here the main focus will on da/dN-ΔK curves, which were used to determine C and m values.
In the following section, the stress intensity factors and the a-N (crack length vs. the number of cycles) for specimens 5 HAZ (figure 6) and 22 WM (figure 7) will be shown.
Crack length vs. number of cycles curve (left) and stress intensity factors (right), model 5 HAZ Figure 7.
For this purpose, a number of specimens were tested via bending moment applied to them, using RUMUL Fractomat 7609/213 device, at the Military Technical Institute in Belgrade, Serbia.
While these results were correlated to a number of other factors, as described in [1], here the main focus will on da/dN-ΔK curves, which were used to determine C and m values.
In the following section, the stress intensity factors and the a-N (crack length vs. the number of cycles) for specimens 5 HAZ (figure 6) and 22 WM (figure 7) will be shown.
Crack length vs. number of cycles curve (left) and stress intensity factors (right), model 5 HAZ Figure 7.