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Online since: January 2022
Authors: Maria Barkova, Violetta Kuznetsova, Alexandr Zhukov, Igor Kartsan
In the case when the diffunding process has a one-sided character, the solution of the equation has the form: (24) where: F0 = Dt/h2 - Fourier number; i - the number of row members; λ1 and λ2 – boundary conditions of medium concentration; h - shell thickness; z - vertical coordinate.
Prangnell, Effect of build geometry on the β-grain structure and texture inadditive manufacture of Ti6Al4V by selective electron beam melting, Mater.
Online since: May 2012
Authors: Yan Bing Wang, Fei Zhang
Improving coal gangue utilization rate can effectively reduce the oxidation of coal gangue, spontaneous combustion, resulting in a large number of atmospheric pollutants, reduce the water body pollution.
The specific performance in sustainable development are: industry should yield low consumption, energy should be clean utilization, grain to ensure long-term supply, population and resources should maintain relative balance, economic and social coordinated development and the environment.
Circular economy is an efficient use of resources and recycling as the core, with "brief quantification, recycle, resource is changed" for the principle, with low consumption, low emission, high efficiency as the basic features, consistent with the concept of sustainable development of ecological economic growth pattern, is a "mass production, mass consumption, a large number of abandoned" the traditional growth pattern and the" end of governance" the fundamental change of mode.
Online since: July 2014
Authors: Lin Bu, Guang Yang, Xiao Nian Sun
For example, a majority of the ethnic minority cannot be self-sufficient in grain, and onlyrely on redeployment of food from developed areas could theymaintain basic living needs;level of industrial development is relatively low, in particularthe base of light industry is weak, the self-sufficient level of mostbasic means of production and consumer goods is very low, which needs to rely on external input; the products produced by ethnic minority is focused on primary resource-oriented products whose marketsare focused on the developed regions, even though the price is distorted and under the transaction structure of “double loss of value”, this kind of unequal inter-regional trade still happens. 3.2 Analysis to the development features of highway transportation hub in ethnic minority areas The development of highway transportation suffers constraints of economic and social development, and the economic development features of ethnic minority areasdetermine the development features of
Table 3 List for layout planning of Yanjinational highway passenger transportation hub Serial number Project Subordinated Construction nature Station level Floor space (m2) Designed daily dispatched capacity (person/day) 1 Yanji Northeast Asia Passenger Station Yanji Rebuilt and extension One-level 36000 10000 2 Yanji Northeast Asia North Passenger Station Yanji Rebuilt One-level 24000 6000 3 Yanji West Station Integrated Passenger Station Hub Yanji New-built One-level 36000 10000 4 YanbianTumen Passenger Station Tumen New-built One-level 36000 10000 5 YanbianHunchun Passenger Station Hunchun New-built One-level 43200 12000 Summation 175200 48000 Table 4 Yanji State Highway freight transport hub layout plan Serial number Freight Station Construction nature Floor space (m2) Yearly tally ability (ten thousand tons) 1 YanjiJuxing Logistics Centre Rebuilt and extension 100000 90 2 YanjiChaoyangchuan Logistics Centre New-built 100000 100 3 YanbianTumen International Logistics Centre New-built
Online since: September 2013
Authors: Mariapaola Riggio, Jakub Sandak, Anna Sandak, Silvia Ferrari, Ottaviano Allegretti, Nasko Terziev
Brown-rot fungi have limited impact to lignin structure; however easily degrade polysaccharides; the wood becomes darker and cracks along and across the grain [1].
Coefficient of determination (r2) was 94.43, root mean square error of cross-validation (RMSECV) has value 3.48, residual prediction deviation = 4.24 (RPD) and rank (number of principal components used) was 6.
An important advantage of the FT-NIR spectroscopy is its simplicity of performing very high number of tests without needs of any destruction to the timber member.
Online since: October 2013
Authors: Rong Zhu, Teng Chang Lin, Shao Chun Chen, Jing She Li, Li Qiu Xue
Main Raw material for smelting of experimental steel include Q235 steel(w([C]) 0.17%, w([Si]) 0.31%, w([Mn]) 0.07%, w([P]) 0.020%, w([S]) 0.025%), pig iron, ferrophosphorus, ferrous sulfide, pure tin grain, ferromanganese and calcium-silicon etc.
Table 1 The chemical composition of experimental steels and the chemical composition of corresponding National Standard automatic steel (wt%) Heat number of experimental steels Type of steel Chemical composition w([C]) w([Si]) w([Mn]) w([P]) w([S]) w([Sn]) w([Pb]) 1 Y20Sn 0.21 0.46 0.85 0.048 0.28 0.013 - 2 Y20Sn 0.18 0.40 0.80 0.050 0.26 0.049 - 3 Y20Sn 0.20 0.38 0.79 0.055 0.29 0.088 - 4 Y20 0.21 0.36 0.79 0.056 0.29 - - GB/T8731-88 Y15 Pb 0.10~0.18 ≦0.15 0.80~1.20 0.05~0.10 0.23~0.33 - 0.15~0.35 GB/T8731-88 Y20 0.17~0.25 0.15~0.35 0.70~1.00 ≦0.06 0.08~0.15 - - Testing Results of Mechanical Property.
Table 2 Compare of the testing result data of mechanical property of Y20Sn and the standard requirement of Y20 Heat number Steel Type Diameter (mm) Tensile strength (MPa) Extensibility (%) Reduction of area, (%) Hardness (HB) 1 Y20Sn 5.990 483 29.33 55.41 132 2 6.010 479 28.80 58.75 138 3 6.008 432 28.42 58.64 136 GB8731-88 Y20 - 450~600 20 30 ≦175 Testing Results of The Machinability.
Online since: June 2013
Authors: Ai Lin Liu, Xi Nan Zhang
To AVS, literature [8] advances the fast algorithm which combines the zero block early termination norm and pre-selecting candidate modes according to fine-grained characteristic.
The main parameterized setting is: the number of encoding frames is 100; the frame rate is 30f/s; the sequential structure is IBBP; the number of reference frames is 2 and the motion searching radius is 32; closing Hadamard transformation and opening rate distortion optimization.
Online since: September 2012
Authors: Rui Li, Cheng Xuan Xiang, Hua Qing Wang
According to Sheryl formula, the choice of three peaks, calculated the average grain nano-ZnO was about 32nm.
Charge and Discharge Fig. 4 Curves of discharge capacity vs cycle numbers Figure 4 shows the discharge capacity curves of the zinc electrodes of the different components at different cycles.
As the number cycles of charge/discharge increase, all of the discharge capacity of the zinc electrodes was declined quickly.
Online since: August 2019
Authors: Lucia Rozumová
These wastes show considerable heterogeneity of grain, chemical and mineralogical composition [2].
The total number of binding sites available for sorption was calculated for Ni (II) ions = 67.57 mg.g-1 and for Mn (II) = 73.52 mg.g-1.
The number of binding sites, that were in fact occupied in the experiment with Ni(II) ions equals to 59.29 mg.g-1 and for Mn(II) to 65.58 mg.g-1.
Online since: April 2020
Authors: Yusril Yusuf, Martinus Kriswanto, Muhammad Khairurrijal, Dave Leonard Junior Wajong, Tofan Maliki Kadarismanto
Since 2011, the number of traffic accidents in Indonesia has reached around 100,000 cases per year, with the highest number of 117 thousand cases in 2012 [4].
According to Aminatun et al. [3], the cooling in the sintering process will obtain the formation of compaction processes, volume diffusion, and grain boundary diffusion.
Online since: September 2016
Authors: Yulia Sidorenko, Sofia F. Korenkova
However and in this case, according to provisions of molecular dynamics, redistribution of atoms in an adjacent zone with increase in number of contacts is observed.
There is the creation of conditions for mechanical syneresis fluid, as well as the creation of the percolation in the form of links between the grains (refer with: Fig. 3).
In the course of the development the system undergoes a number of rheological changes.
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