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Online since: July 2015
Authors: Rui Hua Hu, Shuai Zheng, Chuan Lin Zheng, Ai Ju Jiang, Zhi Guo Ma
Energy requirement (Data source [6][8]) Figure 2.
Table 1 Weight Reduction with natural fiber composites(Data source[12]) Component Auto side panel[9] Auto insulation panel[7] Transport pallet[6] materials ABS Hemp/epoxy Glass fiber Hemp-pp Glass fiber China reed-PP Weight (g ) 1125 820 3500 2600 15000 11770 Weight reduction (%) 27 26 22 Table 2.
The weight reduction ranges from 20-30%.
Natural fiber reinforced composites for automobile(Data source[25,26]) Products Main applications Developers Main users Jute/PP Car interior components, noise absorption panel, NVH/Acoustic absorption materials.
As reported in reference [22], the author gives the thermal conductivity data of some kinds of NFRP.
Online since: November 2012
Authors: Li Zhang, Yan Miao Ma
The natural frequency and damping coefficient of it are obtained and compared with that of the semi-metallic brake pads, the excellent performance of the new composite brake pads is verified and it provides a new way for the noise reduction. 1.
Therefore, ANSYS modal analysis results are consistent with the theoretical ones. 3.Modal test 3.1 Test principle Modal testing system is mainly made of three parts: the excitation system, the signal pickup system, and data acquisition and processing system, which is shown as Fig.8.
Finally, modal identification is conducted on the measured data and the first 10 modes of each group of signals are identified. 3.3 Results and discussion 1) Comparative analysis of the natural frequency The first 9 natural frequencies of different materials are obtained, which are shown in tab.5.
However, the damping coefficient of the new composite material is much larger than that of the semi-metallic material, which proves that the new composite material is in better noise and vibration reduction performance. 4.
Given the above, compared with the semi-metallic material, the new composite material is in better noise and vibration reduction performance.
Online since: May 2013
Authors: Ying Chuan Zhao
Forty evaluation indexes are storage and mining ratio, transport capacity, impact factor of change suddenly, fluctuation rate of price, SO reduction rate and so on.
demand ratio Energy supply and demand ratio Supply and demand ratio Supply and demand ratio Growth rate of consumption Storage and mining ratio Stocks Storage time Balance degree of regional supply and demand Energy self-sufficiency rate Resource rating Dependence degree of import Growth rate of Per capita electricity consumption Growth rate of energy consumption Balance degree of regional supply and demand Balance degree of supply and demand Transportation Transport capacity Safe degree of import transport Grid transmission capacity Safe degree of energy transport The affect of change suddenly Impact factor of change suddenly Impact factor of change suddenly Impact factor of negative charge Impact factor of energy change suddenly Economic security Fluctuation rate of price Fluctuation rate of price Fluctuation rate of price Elastic coefficient of energy consumption Foreign exchange reserve Technology energy-saving rate Growth rate of renewable energy Ecological environment SO reduction
rate SO reduction rate SO reduction rate Environmental carrying capacity CO emission growth rate CO emission growth rate The degree of environmental pollution Conclusion The evaluation of energy security is a comprehensive, complex and multidisciplinary problem, so, it is a vast project to structure the evaluation index system of energy security.
This process will need not only a large number of fundamental data, but also model prediction and system simulation to process the data, so that the accuracy and authority of the system will be ensured, this is also the next step we will work mainly.
Online since: January 2012
Authors: Hua Shi, Ya Xiang Bai, Ya Xin Yang
At the same time, the drying rate and moisture content data were performed using linear and non-linear regression analysis to estimate a suitable model.
Therefore, the sludge incineration is the most effective way for harmlessness and reduction disposal.
Reduction of energy usage in drying of sludge is a major concern among environmentalists in terms of reducing greenhouse gas (GHG) emissions.
Drying patterns for EHD, hot air and ambient air drying of sludge The EHD experimental data of moisture content obtained at different time were predicted by were predicted by linear and non-linear regression analysis using SPSS computer program, the following exponential equation was found to express the drying rate: (1) where y is the moisture content of sludge in %, t is the drying time in h.
The drying curves of sludge treated by EHD with different voltage values The experimental data of drying rate obtained at different drying voltage were performed for all five drying models, and, the drying constants and the values of R, R2 and S were given in Table 2.
Online since: June 2011
Authors: Shi Hua Li, Shi De Zhao
In addition, ratings indicators are much more indicators, which in turn will increase the difficulty in the work of data collection and arrangement.
Sample selection: Choose 38 Hotels in Beijing, Guangzhou, Nanjing, Ningbo and so on as the object of research, 8 hotels of which as verification set data, 30 as test set data (W1, W2, ...
W30) Data Collection: 150 survey questionnaires were distributed, and 139 available questionnaires were retrieved which resulted in 97.3% sample return and 92.6% the ratio of callback of valid questionnaire.
After careful interviewing, ultimately determine W20 as the Autocracy type of TMT, and W10 and W29 as democratic type of TMT. 3.2 Data processing and analysis 3.2.1 Test of Reliability and validity of Indexes’ system BY use of Cronbach α-reliability coefficient assessing the credibility, after the original data are standardized, then put it in the formula testing reliability and validity, calculated result as shown in Table 2.
Weight coefficient matrix of indicators multiply the corresponding value of the research data standardized, the value obtained is based on the one based on Rough Set.
Online since: July 2003
Authors: J.S. Owen, N. Haritos
In these methods, the vibration data are first pre-processed to obtain a reduced feature vector that contains the key characteristics of the original data.
Both techniques show that the spectral data for the repaired bridges are significantly different from the data for the undamaged structures, which is expected given the nature of the repair.
incoherent frequency shift The same ANN as used on the experimental data was also used to classify the simulated data, although it was retrained using a subset of the simulated data for the undamaged and fully damaged cases.
As in the experimental data there was no confusion when the ANN was used to classify test data from these two extremes.
The problem of identifying data sets that differ significantly from an original undamaged data set, the novelty detection problem, requires a different approach to training the ANN (unsupervised learning) and these methods are currently being applied to the data sets to achieve this.
Online since: October 2014
Authors: Hong Ying Wang, Xi You Liu
Superior equipment - the computer when the call data is stored data package sent.
The program of data collection terminal gets data by the RS_485 bus, and collection terminal communicate with data center using Zigbee wireless sensor network technology, exchange data by network and data concentrator to control remote equipment.
The data field length of L: L is the number of bytes of data fields, the read data is not greater than 200, the write data is not greater than 50.
L = 0 indicates that no data field.
The data field DATA: send data encryption 33H, receive data reduction 33H.
Online since: February 2012
Authors: Vinay Sharma, Sanjeev Kumar, Somnath Chattopadhyaya
The data were then analyzed using statistical package for the social sciences is used as a path analysis model to verify the hypothetical construction of the study.
It tells how likely it is that sample data have responded even if the null hypothesis is true.
DEV.) t p Waste discharge methodology for reducing cost 2.514 (0.853) 17.437 0.00 Reduction in cost for materials purchasing without affecting the quality of the product 2.342 (1.186) 11.679 0.00 Reduction in cost of energy consumption 2.714 (0.893) 17.972 0.00 Effective waste treatment management for reducing cost 2.571 (1.037) 14.668 0.00 Reduction of the fine for environmental accidents 2.285 (0.987) 13.696 0.00 “Economic Performance”, which has 5 underlying dimension.
In industry the most important dimension is Reduction in cost of energy consumption (2.714) followed by Effective waste treatment management for reducing cost (2.571), and the least important dimension is Reduction of the fine for environmental accidents (2.285) followed by Reduction in cost for materials purchasing without affecting the quality of the product (2.342).
To attain even greater cost savings from waste reduction, meet comprehensive social and environmental responsibility targets and find new products with smaller ecological footprints, industries must extend their goals for environmental performance into their suppliers’ operations.
Online since: August 2015
Authors: P. Ravichandra Ganesh, K. Hemachandra Reddy
The results show that, when the engine is run with D85E15ACN, there is an increase in brake thermal efficiency and reduction in hydrocarbon (HC), carbon monoxide (CO) and smoke emissions, compared to that of neat diesel.
Similar study was carried out by Mu-Jung-Kao et.al [8], their data revealed 410 ppm of NO emission at full load and 1500 rpm.
The limitation of higher NO emission is compensated by increase in BTE and reduction in HC, CO and smoke emissions.
Smoke is considerably reduced due to complete combustion of D85E15ACN (~50 % reduction compared to neat diesel).There is a slight increase in NO emission for D85E15ACN when compared to neat diesel, however it is within permissible limits as per the literature.
[5] Xingcai Lu, Junjun Ma, Libin Ji, Zhen Huang, Simultaneous reduction of NOx emission and smoke opacity of biodiesel-fueled engines by port injection of ethanol, Fuel. 87 (2008) 1289-1296
Online since: February 2006
Authors: Jing Tao Han, Hong Li
Then the entire assembly is rolled under a small reduction when heated to bonding temperature.
In rolling-diffusion bonding process, reduction is a key parameter influencing interface bonding strength.
Theoretical calculations were performed with above mathematical models, and the computation results were compared with experimental data. 1.
The microstructure obtained at the bonding region under reduction 13.1% for 30min is shown in Fig.2.
Vol. 40(1995), p.181 [14] H Mehrer: Numerical Data and Functional Relationships in Science and Technology ( Druckhaus Langenscheidt KG, Belin 1990)
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