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Online since: July 2007
Authors: Karolien Vanbroekhoven, Sandra Van Roy, Ludo Diels, Johan Gemoets, Paul Verkaeren, Ludo Zeuwts, Karel Feyaerts, Francis van den Broeck
Rapid microbial sulphate reduction (within 50 days) was induced in the tests containing nutrient-amended lactate, cheese whey and soy oil.
For the condition containing glycerol and aquifer solids from 30 m-bg, an increase of both pH and fatty acid concentration (data not shown) and a decrease of redox and sulphate concentration correspond with a decrease of Zn (Fig. 1B) and Cd concentration.
A summary of all data obtained within 106 days of treatment are presented in Table 4.
In the other conditions there was no removal of Mn and Co (data not shown).
Nevertheless, Ni was removed similarly in all conditions (data not shown).
Online since: October 2015
Authors: Petr Blecha, Lubomír Vašek, Radim Blecha
It is implemented as a problem-oriented information system that includes generic data, a template of basic manufacturing facility types and also the data of specific production facilities.
The database is used to store and ensure the basic management of data.
Computer-aided Risk Analysis Risk Analysis is not very simple task – it is necessary to handle a large amount of data and the data does not have any simple relationships.
Modules to create data structures for concrete pieces of machinery based on prepared templates 3.
For example the common blocks are blocks with data about a bound element (e.g. machine element or node), or block data about an analyzed hazard or a block for calculating of size of the risk.
Online since: October 2011
Authors: Jian Rong Tang, Xu Dong Gao, Xiao Fang Wu
The CDM produces Certified Emission Reductions (CERs) and the JI produces Emission Reduction Units (ERUs).
Table 2 View of Project-based Market in 2005-2007 2005 2006 2007 Treading System Volume Turnover Volume Turnover Volume Turnover CDM: Primary market 341 2,417 537 5,804 551 7,426 CDM: Secondary market 10 221 25 445 240 5,451 JI 11 68 16 141 41 499 Other emission reduction obligations 20 187 33 146 42 265 Note: The data unit is million tones.
Allocating according to the historical gas emissions data is a commonly used method.
For the choosing of historical data, we can choose the representative year as well as the average gas emission data over the past few years in the calculation.
For the choosing of historical data, we can choose the representative year as well as the average gas emission data over the past few years in the calculation.
Online since: August 2013
Authors: Ya Min Liu, Rao Rao Han, Zhi Jin Tao, Jie Chen
In the whole frequency range, the noise-reduction ability of transverse grooved concrete pavement is the worst.
Fig. 3 Noise testing results for concrete pavements with different texture It can be seen through the data in the graph: (1) The noise level of concrete pavement with the transverse spacing groove is the highest, whose noise level is higher than 2.6 to 4.3 db compared with the same longitudinal groove parameters of concrete pavement
For a frequency larger than 1600HZ, porous concrete pavement has stronger noise-reduction ability.
In the whole frequency range, the noise-reduction ability of transverse grooved concrete pavement is the worst
Cackler: Evaluation of U.S. and European Concrete Pavement Noise Reduction Methods[R].
Online since: November 2011
Authors: Shuo Yang, Yun Tian, Pei Qing Liu
An Investigation of Drag Reduction on Gurney Flaps by an Three-element Airfoil Liu Peiqing 1,a, Yang Shuo 2,b,Tian Yun3,c 1,2,3Institute of Fluid Mechanics, Beihang University, Beijing 100191, People’s Republic of China bCorresponding Author’s e-mail: feifei427@126.com Keywords: three-element airfoil, gurney flap, drag, numerical simulation Abstract.
All the computations in this study are performed for Mach number 0.2 and chord Reynolds number of 2×107.[2] (a) The grid of model g (b) The grid of model g-20s-2h Fig.3: The grid of model g and model g-20s-2h Results and Discussions The data (in Table 1&2) in simulated calculations display that drag is reduced by adding slat on Gurney flap, the maximum drag coefficient reduction magnitude of airfoil reaches 4.27%, and lift coefficient is decreased slightly while lift-to-drag ratio is improved.
Owing to a higher reduction magnitude of drag coefficient, lift-to-drag ratio is improved.
When model g-20s-2h and model g-8s-2h are compared, drag coefficient and lift coefficient are further reduced by the interval reduction of slat, while lift-to-drag ratio is improved.
Bechert , “Drag Reduction on Gurney Flaps by Three-Dimensional Modifications” Journal of Aircraft, Vol. 43, No. 1, 2006, pp. 132–140
Online since: February 2011
Authors: Yu Qian Wang, Jin Chen, Yang Liu, Zhan Ying Liu
The reduction rates was 28%,50%, 70%, 90% in cold rolling.
The data of is shown in table2.
Table 2 The data of reduction /% Annealing temperature / Annealing time/min 28 700 30 0.56 750 0.87 50 700 30 0.86 750 0.93 75 700 10 0.96 750 1.03 90 700 10 1.12 750 1.46 Relationship betweenand reduction at 700°C and 750°C is shown in fig.1 and fig.2.
Fig.1 Relationship betweenand reduction at 700 Fig.2 Relationship between and reduction at 750 Microstructure.
a) Microstructure of reduction 50% b) Microstructure of reduction 50% after annealed at 700℃ c) Microstructure of reduction 50% after annealed at 750℃ d) Microstructure of reduction 75% e) Microstructure of reduction 75% after annealed at 700 f) Microstructure of reduction 75% after annealed at 750 Fig. 3 Microstructure The greater deformation degree was, the smaller recrystallization grains were.
Online since: March 2015
Authors: Jing Hua Sha, Jing Jing Yan, Guo Feng Zhang, Xu Li
Data Three types of data are used in this study.
All of the published data can be downloaded from the internet.
We survey these data from the Huairou and Gaobeidian sewage treatment plants.
Finally, we calculate some data to our research based on the published data.
The predicted maximum COD reduction 233 tons by using reclaimed water compared with no using.
Online since: October 2011
Authors: Huang Lin Zeng, Yong Sun, Xiao Hong Ren, Li Xin Liu
Data Compression and Feature Extraction Based on Principal Component Analysis The principal element analysis is a kind of one multi-dimensional statistical method which transforms many relevance variables as a few of non-relevance variables so that the data from the original high-dimensional space is mapped to a low-dimensional vector space.
The vector data reducing dimensions can save the data in the primary information as possible explanation from view of the variance of a set of vector data.
The output of BP network is data of 6 objects in 3D space of error compensation on machine tools.
The measurement of thermal error compensation of a NC machine tool is got on the HMC800A type three-axis vertical machining center made in China. 572 group data is used as a sample data of error compensation of a NC machine tool.
Over 90% of the data displacement of positioning error compensated is consistent with the requirements of error compensation on a machine tool.
Online since: August 2014
Authors: Vasilina Gulzira, Kayrbekov Zhaksyntay, Yermoldina Elmira, Aity Kali
According to literature data [5], the range of content of carboxylic groups in various preparations of HA may vary within the interval of 1.5-5.7 mg×eq/g, and in phenolic hydroxyls 2.1-5.7 mg×eq/g.
Reliability of kinetic results proves to be true accuracy of individual measurement and reproducibility of experimental data.
High rates of reaction of reduction of PNDA in ethanol are also observed on the catalysts Pd/Sht, Pd/NiO, Pd/B-94.
Rate of reduction of ONP on the catalysts of 0.8%Pd- PHum (1%)/carrier in 0.1N KOH at 313K (Раtм, qcat = 0,1g, mPONP= 0,21g, VН2 = 100 cm3) and PNDA in ethanol at 333K (Раtм, q catalyst = 0,1g, mPONP= 0,29g, VН2 = 100 cm3) Catalyst Rate of reduction of ONP cm3/min Shift of potential of the catalyst, Dφ, mV Rate of reduction of PNDA, cm3/min Shift of potential of the catalyst, Dφ, mV Winital Wmiddle Winital Wmiddle Pd-PHum/SiO2 12,6 11,5 300 19,8 19,2 160 Pd- PHum/Sht 17,7 17,3 300 38,0 38,0 160 Pd- PHum/Sht, proc.1% КОН 18,5 18,5 310 19,9 19,9 230 Pd- PHum/B-94 25,2 25,2 320 33,3 33,3 160 From the data of table 2 it can be said, that in ethanol the high rates of hydrogenation of PNDA are observed on the catalysts Pd-HumK/Sht and Pd-HumK/B-94.
Bhattacharya, Reduction of nitroaromatics with poly (vinylpyridine) complexes of Pd 11 and Pt 11, J.
Online since: October 2015
Authors: Elena M. Knyazeva, Grigory V. Mamontov, Oleg V. Magaev, Alexey A. Krejker, Eldar M. Dahnavi, Olga V. Vodyankina, Alexey S. Knyazev
This indicated the chemical bonding of phosphate component with initial silica support, which is in agreement with XRD data (Fig. 2a).
This correlates with XRD data (Fig. 2a).
This peak corresponded to silver reduction of from silver phosphates [15].
This may be associated with non-reversible reduction of a part of silver during TPR.
The reversible oxidation-reduction of silver plays a key role in heat release.
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