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Online since: June 2014
Authors: Ting Liu, Lie Yang, Jia Wang
Ammonia volatilization likely contribute to the reduction of the ammoniacal nitrogen content assessed.
This data indicate that 16 days of static pile composting with low aeration would be sufficient.
After 20 days of biological pretreatment, the organic matters were reduced from 45.6% to 38.2%, the moisture content reduction was observed from 42.4% to 35.2%, weight reduction was 15%, and volume reduction was reached 20% of the initial volume.
However, few data are available on the modifications of the nitrogen forms occurring during the short-term biological pretreatment.
This data indicate that 16 days of static pile composting with low aeration would be sufficient.
Online since: September 2013
Authors: Zhi Hong Chen, An You Dong, He Xin, Zhong Fu Tan, Li Wei Ju
Benefit Evaluation Model of Multi-Mode Power Exchange Dong Anyou, Tan Zhongfu, Ju Liwei,Chen Zhihong,Xin He North China Electric Power University,China Keywords: Power exchange; Energy saving and emission reduction; Benefit evaluation Abstract.
To relieve the pressure of the energy reservation and emission reduction, and to enhance the effect of the economy and environment profits, the report establishes an evaluating model based on the value of coal saving and the pollutant emission reduction value and the count of the electricity sale-purchase increment, which is various and cross-field.
At present, the generation rights trade and the renewable energy generation grid connection are two main points which a lot of analyses are put into in energy conservation and emission reduction.
Calculation model of power generation exchange’s pollutant emission reduction value The decrement of kth pollutant in electricity generation: (5) The overall decrement of the pollutants in electricity generation: (6) In the mathematical equations, presents the discharge coefficient of .kth coal pollutant; presents the discharge price of kth pollutant; presents the discharge price of kth pollutant in Region j; presents the value increment of pollutant emission reduction from Region j to Region i in selling different kinds of power sources in the t period; presents the value increment of all kinds of pollutant emission reduction from Region i to Region j.
The increment of total value: (9) The analysis of the example To analyze the profits of cross-field generation trade, this report collects daily generation data from Region I and Region II to conduct the analysis.
Online since: May 2011
Authors: Saeid Khatami, Hamid Akrami, Ali Fattah
The main focus of this work was to fabricate Pt/porous n-Si gas sensors with a significant reduction in their breakdown voltages, Vbr.
An increase in electric field can cause a major reduction in the breakdown voltage Vbr.
Our experimental data shows that this current density is not adequate to increase the pores' depth significantly.
The comparison of breakdown data is provided in Tables 1.
As shown in this table the reductions in the breakdown voltages of our sample are significant.
Online since: November 2011
Authors: Da Yong Wang, Yong Chen Song, Yi Zhang, Yu Liu, Ming Long Zhao, Tian Qi, Jia Fei Zhao
Theoretical analysis based on the measured data of sandstone samples shows that the real COPL will be obviously underestimated if the COPL computed by the traditional point-count method is far below CEPL and dissolution processes generated the additional porosity.
The correct understanding of the contribution of diagenetic processes to porosity reduction and permeability retention is quite important for the prediction and evaluation of reservior quality [1-6].
Accordingly, they could quantificationally evaluate the relative importance of the cementation and compactional processes to the reduction of the original porosity of hydrocarbon reserviors [5-6].
Based on the measured data of sandstone samples from [5], the deviation in COPL resulting from a DIPL of -5.0% ranges from 0.75% to 2.10%, which is far below that for CEPL (i.e. 0.4~1.6%) (Table 1).
All sample data come from [5].
Online since: January 2020
Authors: A.G. Barbosa de Lima, Thayze Rodrigues Bezerra Pessoa, E. da Silva, Pierre Correa Martins, V. Campos Pereira, A. Silva do Carmo
The model of Azuara and contributors was fitted to experimental data of moisture lost and total solids gain, in the optimal condition and good agreement were obtained.
This variation is explained by the type of experimental analysis, composition and food physiology and the method of the data treatment.
According to data verified in Table 5, the solids gain velocity constantSSG, presented a value well above the moisture loss rate constantSML.
Zárate-Castillo, Modeling of kinetics, equilibrium and distribution data of osmotically dehydration carambola (Averrhoa carambola L.) in sugar solutions.
Hunter, Statistics for experimenters: an introduction to design, data analysis and model building.
Online since: August 2011
Authors: Jing Shan Do, Chia Ying Hsieh, Yi Shiuan Huang
Preparation and Electrochemical Properties of Pt/Mesoporous-C for Oxygen Reduction Reaction: Effect of Carbonation Temperature Chia-Ying Hsieh1, a, Yi-Shiuan Huang2, b, and Jing-Shan Do2, c, * 1Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan 2Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan am19840115@yahoo.com.tw, bshane741108@gmail.com, cjsdo@ncut.edu.tw, *corresponding author Keywords: Mesoporous carbon; Pt/MC electrocatalyst; Mass activity; Specific activity; Oxygen reduction reaction.
The maximum mass activity (MA) and specific activity (SA) of the oxygen reduction reaction (ORR) on Pt/MC (P/Si = 0.5, Tc = 900 °C) are experimentally found to be 15.54 A g-1 and 18.05 mA cm-2, respectively.
Introduction Commercialization of the polymeric electrolyte membrane fuel cell (PEMFC) is generally limited by the sluggish kinetics of oxygen reduction reaction (ORR) on the cathode.
The difference of Pt loading between the design value (20.0%) and the experimental data were inferred to be: (i) uncompleted reduction of the platinum precursor; (ii) adsorption of organics on the carbon supports.
Online since: January 2009
Authors: Ming Liu, Yun Ping Di, Li Hua Xu, Xiao Meng Zhang, Hong Shun Hao
Based on the analysis of its components, Carbothermal Reduction Nitridation (CRN) method was selected to synthesize eco-friendly composite material.
Here, graphite (obtained from Beijing Chemical Reagents Company, China) was used as reduction agent.
Table 2 listed sintering temperature, holding time, the content of reduction agent and the amount of black clay, respectively.
At 1450°C, principal reactions in this system proceeded according to the following equation: FeTiO3+3.3C+0.35N2=Fe+TiC0.3N0.7+3CO (1) Fe3O4+SiO2+6C=Fe3Si+6CO (2) 3Fe+SiO2+2C=Fe3Si+2CO (3) Based on thermodynamic data form literature [6], Gibbs free energy (∆G 0) was calculated.
Practical Data Handbook of Inorganic Thermodynamics (Metallurgy Industry press, Beijing, China, 2002), p.26 1 Corresponding author.
Online since: April 2014
Authors: Xing Xia Wang, Chen Jing Deng
The former depends on detailed geological survey data, which is not easy to be satisfied in practice under the condition of lack of geological data.
Rock Mass in other two areas is still under loading conditions, so initial mechanical parameters will be used, while in the other two areas, which are usually provided by geological data.
Table 1 Relation between the variation of deformation modulus and reduction extent of stress Reduction extent of tress <30% 30-50% 50-80% 80-90% 90-100% Reduction extent of deformation modulus 1-7% 3-17% 8-31% 15-38% 29-61% Calculation of stress perpendicular to excavation face.
Fig.3 Stratum distribution situation Fig.4 Mechanical model of the section for calculation Initial mechanical parameters of slope rock mass provided by geological data are in table 2, in which is unit weight, E is deformation modulus, is Poisson's ratio, C is cohesion, is friction angle, and is tensile strength of rock mass.
Fig.5 Reduction extent of Fig.6 Reduction extent of Fig.7 Reduction extent of From figure 5, we can see that there is small stress decreased area after excavation when the first principal stress is singled out for calculation.
Online since: March 2006
Authors: Ja Choon Koo, Y.S. Han, Sean W. Kang, Yeon Sun Choi
And it is the most expensive budget consumer so that controlling of the flutter becomes the primary design issue of the data storage industry.
Furthermore the higher rotating speed requirement for the faster data throughput aggravates the fluttering situation in common integration of the modern rotating-disk-type data storage devices.
Although many digital data storage field researchers equipped with cutting edge computational resources are focusing on the development of an effective analysis tool, the given complexity of the rotor and fluid interaction physics hampers the enhancement efforts and the outcome usually becomes ad hoc.
Recognized advantages of the LES for the transient turbulent problems and the effectiveness of the squeeze film damper for the reduction of flutter of the rotating data storage devices, few of publications are available for the combined studies of damper design and air flow excitation by the numerical analysis models.
A theoretical study about LES from the digital data storage systems point of view has been presented.
Online since: June 2014
Authors: Hsin Yi Kuo, Shao Wei Liao, Wen Liang Lai, Chung Yi Chung, Yung Chuan Huang, Chao Cheng Chung, Hwa Sheng Gau
Cluster analysis is conducted based on water quality using data collected between 2008 and 2012.
The multi-variable statistical method is applied to the monitoring data from four years to understand the data structure and variation in water quality under different management organizations.
Factor scores are projections of the data onto the corresponding eigenvectors.
Factor scores were used in the cluster analysis primarily because the data included a few groups of highly correlated variables.
The resulting matrix of water quality data for analysis has the dimension [118x17].
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