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Online since: August 2013
Authors: Chuan Hui Ma, Chao Jin Qing, You Xi Tang, Wen Sheng Pan
Introduction Modern communication systems employ complex modulation schemes to increase the data throughput and enhance the network capacity.
The PCB and the devices such as transistors and power splitter are solder on the heat sink for better thermal conductivity and reduction of memory effects.
One carriers 64-QAM modulated LTE-A signals with totally 20MHz bandwidth are generated in the personal computer (PC) and the PAPR is reduced to 6.8dB after crest factor reduction (CFR).
Inverse PA modeling is carried out in the PC with the I/Q data acquired in the N9030A.
Online since: April 2015
Authors: Sung Ho Tae, Keun Hyeok Yang, Taeh Young Kim, Young Jin Bok
Therefore, from a life-cycle standpoint, a study on the reduction of green-house gas emissions during the production of concrete is essential.
Currently, South Korea has constructed a life cycle index data base (LCI DB) from which environmental information can be obtained according to the production of concrete.
The green-house gas emission amount was evaluated by analyzing data such as mix design and procurement enterprise with respect to seven standard concrete volumes used in the target building.
Roh, Assessment of the CO2 emission and cost reduction performance of a low-carbon-emission concrete mix design using an optimal mix design system, Renew.
Online since: January 2005
Authors: Yu Mi Kim, Young Hoon Jeon, Gwang Chun Jin, Woon Yi Baek, Jeong Ok Lim
For the statistical evaluation, the data were subjected to one factor ANOVA and Dunnett's test.
There was also a significant reduction in the duration of lifting as compared to the pain model (prior to the implantation) (+ P < 0.05).
There was a significant reduction in the duration of the response of the cell-loaded group 4, 7, 10 and 17 days after implantation, as compared to the control group with the empty capsule (* p < 0.05) and the pain model (+ p < 0.05).
The data are presented as mean ± SD (a) Capsules prior to transplantation (b) Retreived capsules 30days after transplantation Fig. 2.
Online since: August 2010
Authors: Zhong Wen Xing, Hong Ya Fu, Cheng Xi Lei
In Ref 5, the effect of dies temperature on the reduction of springback amount was investigated.
The process parameters, such as rheological data, heat conduction, specific heat and thermal Heating above Ac3 Pressing and quenching by dies Formed part with tensile strength over Than 1,500MPa Sample Descaling Table 1 Rheological data of UHSS expansion of UHSS at different temperatures used in the hot-stamping process, are listed in Table 1, 2, 3 and 4, respectively.
Effect of Tool Temperature on the Reduction of the Springback of Aluminum Sheets.
Online since: May 2005
Authors: Lea Di Cioccio, Roland Madar, Igor Matko, Bernard Chenevier, H. Roussel, Stephane Coindeau, Fabrice Letertre, Claire Richtarch
By using the reduction coefficient associated with silicidation, the initial W and Si film thickness tW and tSi are tW = 14.6nm and tSi = 13.0nm for W5Si3 and tW = 8.0nm and tSi = 20.0nm for WSi2.
Due to volume reduction coefficient associated with silicidation, which is less than 1, this type of growth leads to the formation of crystallites-voids alternatively.
A possible explanation is that stress stabilizes the metal-rich phase at temperatures much higher than expected or that the thermodynamics equilibrium is not reached at this temperature in agreement with experimental X-ray diffraction data in [2]. 38 40 As transferred films Annealed films (202) a (321) a W5Si3 a (112) a (411) a (221) a SiC (200) 38 40 44 46 2 Theta 38 40 As transferred films Annealed films (202) a (321) a W5Si3 a (112) a (411) a (221) a SiC (200) 38 40 44 46 2 Theta Fig. 2.
The flat shape of the spacers is associated with a very high interface stress detected from plan-view TEM observations and diffraction data analysis.
Online since: December 2011
Authors: Hua Ding, Yin Ben Han, Zhuo Liang Li, Ge Zhou, Fu Rong Cao, Fu Xiao Yu
The dynamic response is the fundamental data for the hot processing of material and has an important significance in optimizing a thermal deformation process and selecting deformation equipment.
First, the alloy strip was hot rolled to 3 mm with a total reduction of 40%, and then was cold rolled to 2 mm with a total reduction of 33.3%.
Deformation process was controlled by the computer of Instron5500 electronic universal testing machine and the computer collected data automatically, such as stress, strain, pressure, displacement, temperature, time and so on.
Online since: February 2013
Authors: Shi Hui Lv, Meng Lin Qiang, Xiao Liang, Peng Fei Shen, Feng Wang, Nian Qiao Fang
Therefore,it is very necessary to do REE geochemistry research between Co-rich Crust and basement research for we can gain the information of the formation of the crust, distribution characteristics and sedimentary environment also provide geochemical data and basis[1-3], then support oceanic mineral resources research.
Results and discussion The result of the REE data with three sections of the Co-rich crust from the Magellan Lamont t is presented in Table 1 Table 1 REE contents of the study samples contrasted with standard samples(10-6) Sample La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu ΣREE Basement 232 9.99 22.1 106 15.6 4.44 27.7 5.09 34.2 9.35 33.6 5.08 36 5.99 547.14 Compact layer 347 1122 48.2 218 34.7 9.22 54.1 9.35 52.6 13.2 42.9 6.43 43.9 7.09 2008.69 Loose layer 230 439 50.1 223 42.4 11.1 50.4 9.03 47.2 8.97 27.1 3.96 26.8 3.73 1172.79 HWY basalt 12 30.2 4.1 21 5 1.9 5.5 0.9 5.3 1 2.6 0.4 2 0.3 92.2 Forami- nifera 3.8 5.5 3.5 1 0.2 0.1 0.3 0 14.4 Sea 3.4 1.2 0.64 2.8 5 0.13 0.7 0.14 0.91 0.22 0.87 0.17 0.82 0.15 17.15 NASC 32 73 7.9 33 6 1.2 5.2 0.9 5.8 1 3.4 0.5 3.1 0.5 173.5 Note:HWY basalt, Foraminifera, Sea and NASC’s REE refer to [4] Rare earth elements in supergene environment is very stable, sediments in REE composition and distribution pattern mainly depends on the source
The change of the major effect factors of the surface of the ocean sea mountain department of the ancient Marine productivity level and rich cobalt crust near oxidation reduction environment.That is high productivity in Marine and strong oxidation environment, growth of the Co-rich crust of Ce content is relatively high.From the microcosmic point of view, all present inner shell (close to the core, age older horizon) [8-10]rare earth element content higher than external shell, but the difference is not very obvious.
Limit s of the natural environment in terms of pH and oxidation -reduction potentials [J] .
Online since: September 2013
Authors: Dong Lin, Jing Tian Han, Qin Zhao, Gui Ge Hou, Juan Juan Zhao
Foaming concrete possesses some unique characteristic, such as low density, heat insulation, antiflaming, noise reduction and so on [3].
The data was summarized in Table 1.
The performance of foam concrete which prepared by the self-made foming agent was tested and the data was summarized in Table 2.
With the increase of the amount of foam incorporation, the compressive strength also reduced, which was due to the increase in the amount of pore per unit volume and the reduction in the quantity of cement slurry, thus lead to lower compressive strength.
Online since: May 2013
Authors: Zuzana Turnova, Karol Balog, Tomas Chrebet, Martinka Jozef
Often kinetic data are extracted from a plot of mass loss vs. time or temperature.
Determination of rate constants at several temperatures provides the data needed for the construction of a dependence of ln(k) vs. f(1/T), through obtained points is by least squares method translated linear dependence .
Impregnation by 5% concentration reduced the activation energy compare to pure cellulose by 45% to 42,8 kJ.mol-1, 10% concentration caused reduction by 52% to 37 kJ.mol-1, and 15% concentration caused reduction by 56% to value of 34,6 kJ.mol-1.
Online since: February 2015
Authors: Galina V. Lysak, Tatyana D. Malinovskaya, Olga N. Tchaikovskaya, Vyacheslav R. Artyushin, Ilya A. Lysak
Based on the data obtained, it has been determined that the non-exposed MCPA solution has two absorption bands in the 200-300 nm range.
However, if the exposure time is increased, there is a significant reduction in the intensity which can be associated both with the increase in the share of the absorbed excitation energy and the flow of secondary phototransformations.
After exposure to radiation in the presence of the “TiO2 nanoparticles – carrier” and the “TiO2/SnO2 heteronanoparticles – carrier” systems (with the concentration of the active component of 22 and 25/6 mg/g), there is a reduction of the intensity in the 228 nm and 240-260 nm ranges (Fig. 2).
The oxidation and the reduction of non-adsorbed substrate's molecules is possible in case of transformation of primary electrons and holes on the nanoparticles' surface into stable intermediates.
Having analyzed the spectral analysis data, it has been concluded that the carrier material and the systems with applied oxide semiconductor nanoparticles do not exhibit sorption properties towards МСРА molecules.
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