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Online since: October 2011
Authors: Su Hai
The reduction device consists of a friction element and an elastic steel spring.
Here we introduce the friction device as reduction measure.
For the chosen material data if the spring force exceeds the pre-defined friction force Fr, sliding takes place and consequently energy will be dissipated.
Consequently, no vibration reduction will tae place.
Reduction of pounding effects in elevated bridges during earthquakes.
Online since: September 2013
Authors: Erni Setyowati, Anggana Fitri Sadwikasari
Building Materials Composition Influence to Sound Transmission Loss (STL) Reduction Erni Setyowati1,a, Anggana Fitri Sadwikasari2,b 1Building Science Laboratory, Engineering Faculty, UNDIP, Semarang, Indonesia 2Islamic University of Indonesia (UII), Yogyakarta, Indonesia aernisyahdu@gmail.com, banggana@gmail.com Keywords: Airport noise, building material composition, STL reduction.
The models of housing are laid out with a number of specific orientation angles towards the runway and resulted values of the highest noise level reduction.
With this rotation, it can be determined that the more effective orientation angle towards the runway the higher value of sound reduction.
The comparative method is a practical method among the other methods, because it is flexible in the amount of data as well as those simplicity of the experimental treatment.9 Meanwhile, according to S.
Santoso, SPSS 18 assisted easily in solving the rating of orientation angles by incorporating the data relative to the value in the data sheet, and analyzed after labeling process. 10, 11 Sound level measurements performed well in the field when the aircraft landing and take-off.
Online since: February 2012
Authors: Wen Peng Su, Feng Jiao Wang, An Qi Wang, Wei Min Zeng, Ren Jie Wang, Sun Fang Dai, Guang Hua Chen
Besides, the pipeline will wait one cycle for data loading.
Table 1 Data used for half-pixel interpolation.
So a data reuse scheme is introduced to solve this problem.
Data used for quarter-pixel interpolation.
The data buffer module is shown in Fig.7.
Online since: January 2007
Authors: Young Do Kim, Gil Su Kim, Baek Hee Lee, Kyu Hwan Lee, Young Jung Lee
Reduction of Co3O4 primarily occurred near 300˚C and reduction of Fe2O3 occurred near 400˚C.
Change of XRD patterns with (a) milling time and (b) reduction temperature.
%Co alloy powders prepared by hydrogen reduction are shown in Fig. 4.
The saturation magnetization values are 214 and 216 emu/g which were correspond to the data of the reference [7].
-15000 -10000 -5000 0 5000 10000 15000 -300 -200 -100 0 100 200 300 -300 -250 -200 -150 -100 -50 0 50 100 150 200 250 300 -10 0 10 Magnetic field (Oe) Magnetization (emu/g) Fe-20at.% Co Reduction Fe-50at.% Co Reduction Magnetic field (Oe) Magnetization (emu/g) Fe-20at.% Co Reduction Fe-50at.% Co Reduction Fig . 4.
Online since: January 2014
Authors: Jing Ya Wen, Yu Li, Chao Ci Li
There are many researches on CO2 emission reduction of power industry.
model for CO2 emission reduction of power system under uncertainty to provide reference for the feasibility and applicability of CO2 emission reduction techniques [9].
Capital Constraint of CO2 Emission Reduction
(3) where PER is the reduction cost by decreasing 1 g/kW·h of coal consumption per unit, yuan/t CO2; PPR is the reduction cost of per unit CO2 emission reduction by taking measure of CCS etc, yuan/t CO2; FECi is the capital of CO2 emission reduction in period i, 108 yuan.
Concrete planning data of power system in Heilongjiang area sees Tables 1 and 2.
Online since: March 2013
Authors: Ming Hao Fang, Zhao Hui Huang, Yang Ai Liu, Bin Ma, Shu Sen Chen
Porous silicon was obtained via magnesiothermic reduction from the leach residue.
Magnesiothermic reduction pathway, known to have a much lower reacting temperature than carbothermal reduction, is demonstrated to convert leaching products from serpentine into porous silicon.
The leach residue had been converted into silicon and MgO by magnesiothermic reduction.
Because of MgO dissolution and drying process, BET and BJH data showing the pore volume and surface area of porous silicon are different from those of the amorphous silica.
Ren, et al, Fabrication of high surface area mesoporous silicon via magnesiothermic reduction for drug delivery, J.
Online since: June 2015
Authors: Pan Yue Zhang, Guang Ming Zhang, Tian Wan
Various mechanisms contribute to the sludge reduction but the role of each one is unclear.
This method has been shown very effective in excess sludge reduction and 30-100% sludge reduction has been reported [4-7,10,11,15,17].
Data reported were the average values of 6 months’ operation unless stated otherwise.
The average sludge retention time in SBR1 was 11.4 d while that in SBR2 was 27.7 d (according to data in Table 2).
A protocol was developed for quantitative study of sludge reduction mechanisms.
Online since: December 2014
Authors: Min Tang, Li Ping Wang, Sheng Wang, Shi Yong Zhang, Chun Yan Li
A System Dynamics-Based Scenario Analysis of CO2 Emission Peak and Emission Reduction Paths - A Case Study of Chongqing’s Cement Industry Sheng Wang1,a*Min Tang2,b Shiyong Zhang2,cChunyan Li1,d Liping Wang2 1.
A comparison with historical data indicates a desirable goodness of fit of the simulation results, which show that the cement output in Chongqing will reach the peak of about 95 million tons in 2020, followed by a slow decrease to 90 million tons towards 2030; the energy consumption will reach a maximum of some 7.8 million tons of standard coal in 2020; the CO2 emission will reach about 76 million tons in 2020, followed by a drop to 60 million tons towards 2030, equivalent to the 2015 figures.
Based on the data, this paper analyzes the influence of different technical paths and policy options on emission in various developmentalscenarios, and proposes specific paths for mission reduction.
At the provincial level, Mao Ziwei (2010), Gao Cailing (2012), Feng Bingxun (2003) and other scholars examine the potential and measures of emission reduction in Shandong, Henan and Taiwan provinces[2].
Tong Hefeng (2012) and Wang Xianghua (2007) systematically examine the paths of carbon emission reduction in cement industry using the system dynamics-based simulation model.
Online since: December 2014
Authors: Ying Bo Xu, Jing Yu He
The best low-frequency noise reduction is located below the pylon where peak noise reduction is as high as about 1.3dB on frequency spectrum. 1.
All the acoustic data are collected on the hot jet noise rig located in the anechoic chamber, shown in Figure 1.
The microphone array which consists of seven microphones has the ability of capturing data at jet directivity angles ranging from 0 to 180 degree and the top of the pylon is defined as 0 degree.
The highest jet noise reduction in these experimental data is as high as 1.2dB located under the pylon.
The best low-frequency noise reduction is located above the pylon where the noise reduction is as high as 3.7dB on frequency spectrum.
Online since: October 2011
Authors: Geng Wang
Of Nanjing,New & High (N&H)—Nanjing New & High-Tech Industry Development Zone,HuaGongYuan—Chemical industrial park(NCIP),DES-Direct environment supervision. 1.3.1 COD emissions and enterprise emissions, life emissions connection According to the data table 1, The following correlation coefficients is obtained by using Data processing system(DPS): r(Y0,X11)= 0.65236, r (Y0,X12)= 0.61206,r (Y1,X21)= 1.00006, r (Y1,X22)= 0.49057, r (Y2,X31)= 0.95374,r (Y2,X32)= 0.54285.
GM (1, 1) Model GM (1, 1) Model is 1 order equations 1 variables Grey Model, Hypothesis: n observation value of the original data set of the sequence is: .
Here the original series represent for Nanjing enterprise COD emissions and SO2 emissions respectively, data see table 7.
Table 7 Nanjing enterprise COD emissions and SO2 emissions Unit:Ten thousand tons index 2002 2003 2004 2005 2006 2007 2008 2009 2010 COD 3.1 3.12 2.96 3.03 2.84 2.68 2.56 2.25 2.0213 SO2 12.65 14.16 14.44 14.91 14.56 13.95 13.76 13.4 11.55 Data sources: Nanjing Environmental Protection Agency,《Nanjing Environment Bulletin(2002-2010) 》 According to the data table 7, The following results is obtained by using Data processing system(DPS)(GM(1,1)model): 2.2.1.
[6] Data Information on http://www.njhb.gov.cn
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