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Online since: February 2015
Authors: Gulsharat Baigonakova, Еkaterina Marchenko, Viktor Gyunter, Аnatoliy A. Klopotov
It is known that doping with vanadium leads to grain refinement, appropriation of viscosity, reduction in brittleness, and increase in the alloy strength [3].
These data suggests that the alloy Ti50Ni48.7Mo0.3V1 has high plastic properties and possesses a well-defined SME.
Online since: November 2014
Authors: Zawawi Zarina, K. Azduwin, Mohd Jamir Mohd Ridzuan, K.M. Firdaus, S.M. Hafis
Other than been used as electricity producer, Pico-hydro turbine can also resulted for reduction of CO2 emissions as it can replace fossil fuel and fuel wood to help exploiting local resources, reduces dependence on imported fossil fuel, and saves forests from destruction and soil erosion, cutting down the number of house fires and provides power for recharging portable equipment such as mobile phone [2,3].
The recorded data is also being plotted into a graph for easier observation of the water energy potential.
Online since: October 2010
Authors: Zhi Xin Chen, Bao Fu Xu, Meng Ru Li
This system is with constant torque output and its transmission ratios of the reduction gearbox 17 and the step-up gearbox 12 are a fixed value.
From Fig.3, we find that the test data are not stable.
Online since: April 2014
Authors: Xiu Li, Lu Hai Li, Jun Ran, Wei Liu, Yan Fang Xu, Yu Wang
It shows that the more the reduction of the line width and the increase of the period, the better the infrared transmittance is.
Table 1 The shielding effect of calculation and measurement 2a/ μm g/ μm S / dB f=7GHz f=10GHz f=13GHz theoretical value experimental value theoretical value experimental value theoretical value experimental value 1 15 300 31.71 1.22 28.61 2.08 16.38 1.79 2 20 300 33.16 6.46 30.05 9.78 27.78 10.06 3 30 300 35.68 10.3 32.58 7.32 30.31 14.37 4 40 300 38.00 11.6 34.89 11.26 32.62 15.68 4 Analysis and discussion By analyzing the test data, the conclusion is shown as following: 1) The metallic mesh film fabricated by flexographic printing method has good performance, for which the periods and line widthes relatively close to the design value. 2)For the electromagnetic shielding, the reflectivity of the metallic mesh to the electromagnetic wave reaches 80% or more (7 db) with different structure parameters, however, it can be seen from table 1 that there is great difference between the experimental and theoretical value.
Online since: December 2012
Authors: Jin Xia Zhang, Fu Sheng Niu, Xing Guo Wang, Li Nan Tian
Table 4 Kyanite national standards [%] Species Data LJ-58 LJ-55 Al2O3/% ≥58 ≥55 Fe2O3/% ≤0.8 ≤1.5 TiO2/% ≤1.5 ≤2.0 K2O+Na2O/% ≤0.3 ≤0.5 NaOH/% ≤1.5 ≤1.5 ② business standards Combined with the user's requirements, we have done some work in recent years and formulated enterprise standards, as shown in table 5.
Table 6 Kyanite’s application and advantages Application Characteristic Application area Refractory material (1) Stability volume at high temperatures (2) Low cost than other high-alumina refractories (3) Refractability is up to 1825°C (4) Energy conservation (5) High-temperature expansion agent in the unshaped refractory materials Metallurgy, Building industry, Machinery, Chemicals, Light manufacturing, Nuclear industry Silicon-aluminum alloy and metal fiber (1) Low cost and high economic efficiency than the method of synthesis or electrothermal reduction of kaolin (2) To meet the special needs of automobile manufacturing, spaceships and radar Metallurgy, Machinery, Aircraft industry Alumina 1/2~1/3 Less than nepheline and kaolin as raw material Metallurgy Anti-casting stick sand Lower price than that of zircon powder, but the similar performance Metallurgy, Machinery Mullite High refractoriness, low thermal expansion, strong resistance to chemical corrosion, high mechanical
Online since: January 2013
Authors: Chao Ping Chu, Shaw Hwa Hwang, Cheng Yu Yeh, Shun Chieh Chang
The RGB data is selected and the dimension of each codeword is 12.
G.729 Baboon Lena PESQ/PSNR reduction 3.19è2.74 25.65 è 21.61 dB 31.69 è 26.68 dB Top-10 Statistics 1st 20.92% 16.41% 19.57% 2nd 12.91% 10.37% 13.69% 3rd 9.95% 7.91% 10.88% 4th 9.35% 6.56% 9.41% 5th 7.72% 6.27% 7.56% 6th 6.13% 4.74% 5.36% 7th 5.38% 4.15% 4.85% 8th 4.72% 3.89% 4.31% 9th 4.23% 3.36% 3.32% 10th 3.28% 2.82% 2.87% others 15.41% 33.53% 18.16% A detailed analysis of computational saving is shown in Table 2.
Online since: December 2010
Authors: Dong Qing Zhang, Xue Ying Li, Xin Wei Ma, Zheng Wang
Some papers [5, 11-12] report that the fly ash concrete shows noticeable reduction in porosity after 28 days.
The RCP test data for concretes incorporating fly ash or slag are presented in Fig.2 and Fig.3.
Online since: February 2014
Authors: Karel Dvořák, Karel Kulísek, Radek Magrla
Using of plasticizer at constant consistency/penetration serves for reduction of water coefficient and afterwards for increase of strength.
Duda: Cement-data-book. 3., Neubearbeitete und Erweiterte Aufl.
Online since: October 2014
Authors: Gheorghe Oancea, Emilian Ionut Croitoru
Finite element model - loadings In order to complete the necessary analysis data, the following conditions and requirements have to be used: · General: o units – [1000 mm] used; · Geometry: o unnecessary holes and uncritical radiuses removed from model; · FE-model: o parts connected appropriately; o no open edges in the model; o normal vector of the elements justified; o no double elements in model; o node equivalence; · Elements: o not more than 5% CTRIAs used; o no “bad” elements – jacobian ratio less than 2.00; · Properties: o correct properties for all element types; o correct material and orientation for all elements; o correct layup and orientation for composites – global ply ID used; o weight of the panel correct; · Boundary conditions: o correct boundary conditions on correct nodes; o renumbering of nodes with boundary conditions; o correct loads and forces (force [N], pressure [MPa], acceleration [m/s]); · Load cases: o load cases correct loads and boundary
Thus, these materials are: light-weight materials – reduction in weight for the considered panel of 90%; high strength related to weight – tensions related to mechanical properties are similar; good resistance to corrosion; high-impact strength – proven also in this article; good flexibility – low deformations according to the detailed FEM; dimensional stability – no change in the shape of the materials; part consolidation – lower number of parts; durable – many composites have been in service for half a century; others: low thermal conductivity, radio translucent, non-conductive and non-magnetic properties.
Online since: September 2013
Authors: Gang Liu, Jun Jie Song, Ren Jie Wang
The properties of photochromic materials, such as their absorption spectrum, refractive index, dielectric constant, oxidation and reduction potentials, photoluminescence, dipole moment, and ionization potential (Ip), can be changed reversibly during the photochromic process.
Such diarylethene derivatives have been expected to have wide application in optical data storage and retrieval, rewritable optical memory and display, various sensors and switches, etc.
Showing 27401 to 27410 of 40694 items