Search Options

Sort by:

Publication Type:

Open access:

Publication Date:

Periodicals:

Search results

Online since: June 2022
Authors: Fabio A.P. Scacchetti, Daniela S. de Almeida, Roberta Santos, Marcos H. S. Santana, Fabrício M. Bezerra, Mônica Lopes Aguiar, Leila D. Martins
The antibacterial test results showed that the use of the surfactant provides antibacterial properties to the CA/CPB nanofibers, presenting 99.99% reduction for Escherichia coli.
The CA/CPB nanofibers were characterized for mechanical and thermal tests, morphology analysis, water-solubility, Fourier transform infrared spectroscopy and texture data.
The percentage of reduction and the log bacterial reduction of the microbial growth was determined according to the following equation: Log10 bacterial reduction = Log10(B) - Log10(A)
Table 1 presents the reduction percentage and log bacterial reduction of the microbial growth according to the equations described.
N. of bacterium (CFL/mL) at “0” time N. of bacterium (CFL/mL) at “1h” contact Log Reduction Reduction (%) 0.41x105 0 4.61 ± 0.46 99.99% The electrospun nanofiber presented a reduction of microorganisms in comparison with the positive control, which showed an expected growth of microorganisms.
Online since: February 2012
Authors: Zhi Xia He, Tie Min Xuan, Zhao Chen Jiang, Yi Yan
All kinds of spray, combustion and emission models were studied and then the numerical models for the single-injection combustion of 1015 diesel engine were setup and validated through comparing with results from experimental data.
It has became one important and urgent task to carry out noise reduction research for research and development of internal combustion engine.
In addition, the fuel and air are mixed more fully and air utilization rate is improved when adaption of pilot injection, then reduction of Soot formation can be achieved.
The in-cylinder pressure curve predicted with the model is reasonably close to experimental data, as can be seen in Fig.2.
So the Soot emission was reduced because of the reduction of area of high temperature and low oxygen with pilot injection strategies.
Online since: March 2015
Authors: S.M. Abolarin, Chimaobi Daniel Nna, Charles Asirra Eguma, Babatunde Onafeso, Oluwole Adegbenro, O. Gbadegesin, Manasseh Shitta
Also, purchasing and installing an advanced electronic meter with data logging capability to help monitor electrical demand has been shown to give the highest payback of 2.4 years.
Physical inspection and evaluation was employed, equipment specification data was used to aid analysis.
A more modern meter is suggested, the meter has data logging capabilities for storing energy consumption data.
The purchase and installation cost of a data logging meter is estimated at $ 1,775.
Observation made during the data collection shows that the utility company charges this manufacturing company both real power and apparent power consumed.
Online since: February 2014
Authors: Yang Ji Wei, Li Li Yang, Ying Ping Liang, Jing Ming Li
The interval for data collection was 1sec.
All the PCs are inherently uncorrelated and the redundant data are reduced.
The data obtained from the 10 sensor arrays were converted into PCs after a PC transformation using the software of PEN3.
Results of PCA PCA is a well-known statistical method for reducing the dimensionality of numerical data sets and widely used for analyzing gas-sensing data.
Two of the three principal components were kept because their total contribution rate is up to 97.27% of the variance in the data set (PC1, PC2 and PC3 accounted for 86.88%, 7.13% and 3.26% of the variance, respectively).
Online since: September 2013
Authors: Song Wang, Gang Wu, Xi Wen Zhang
The proposed prefetching schemes chose and download the data block which had the higher caching value in advance to reduce data access delay.
We evaluate and compare the proposed schemes using user browsing pattern data and find that prefetching scheme can improve the seeking performance significantly.
To improve user viewing experience, data prefetching has been proposed as a technique for reducing the access latency [1].
These include data caching and data placement [5], trend forecasting [6], Random Seek Support [7].
Huici, in Pro. the 6th ACM International Conference on Web Search and Data Mining, (2013), p. 607
Online since: August 2013
Authors: Kang Guk Lee, Won Hwa Hong, Jong Cheon Park
This research, therefore, aims to examine the effectiveness of related policies in reducing greenhouse gas emission in the country’s home heating sector through scenario analysis on the greenhouse gas reduction in home heating sector.
The data required most for the estimation, therefore, are: (1) present state and future projection of home energy demand per energy source; (2) greenhouse gas emission coefficient of each energy source per usage.
It was confirmed, however, that KEPCO does not keep data on the share of each energy source employed to generate electricity for home use.
For greenhouse gas emission coefficient per energy source required to total estimate greenhouse gas emission, data of the Ministry of Environment and National Institute of Environmental Research was employed (Greenhouse Gas Emission, 2009).
Greenhouse Gas Emission Conclusions This study is aimed at analyzing the effect of reducing greenhouse gas emission by using a scenario in greenhouse gas reduction in home heating sector, with its conclusion as shown below: 1.
Online since: November 2006
Authors: Edilson Rosa Barbarosa Jesus, E.S. Jesus Filho, J.L. Rossi
Slabs were removed from the annealed material, which were hot rolled at 50% (MCSR50) and 72% (MCSR72) thickness reduction ratio that correspond to areas reductions of about 20% and 67%, respectively.
Fig. 2 shows the results of transverse rupture strength tests made in the present work, in comparison to published data for AISI M2 high-speed steel
Results of transverse rupture strength testing (TRS) of evaluated materials, in comparison to data obtained by others researchers after heat treatment.
In this case, the analysis was based mainly on data obtained with cutting speed of 34 m/min.
Compatible results were come across proceeding a similar analysis, based on values of crater wears verified during machining tests, and also when specific Taylor's equation for each material is predicted from data of the tests.
Online since: December 2014
Authors: Milan Žmindák, Zoran Pelagić, Martin Dudinský
All parameters of this model can be easily identified from available experimental data.
This function represents experimental data very well [5].
An own subroutine was developed, which exports the material data of the damaged composite to ABAQUS software, where the effects of stress wave spreading are simulated utilizing the explicit dynamics module.
The goal was to study the wave propagation with and without the influence of stiffness reduction in the composite booster part caused by damage.
Results show that stiffness reduction has significant influence on the wave propagation in the composite structure.
Online since: January 2013
Authors: Rong Li Sang, Yu Zhu Zhang, Yuan Liang Li, Ying Chen, Qing Jun Zhang
The results state that the low temperature reduction degradation property in low silicon sintered ore is to achieve the best when the carbon content was 3.7%.
Through the sintering pot test and sinter metallurgical properties experiment, obtain experimental data as is shown in table 1.
This is the Brazilian powder's own properties; general the sinter ore low temperature reduction degradation rate is higher which hematite as the sinter raw material, but the sinter ore low temperature reduction degradation rate is lower which magnetite as the sinter raw material.This experiment using the powder of Brazil as the research object, Brazil powder mainly composed of hematite, therefore the sinter free Fe2O3 more, so with Brazilian powder increasing, vertical burning speed and yield of the sintered ore is smaller, wear-resistance performance degradation, make the screening proportion of sintered ore little graded obviously increased, so with Brazilian powder increasing, the sinter quality fractal dimension will become larger.
At the same time must point out that the Brazilian powder belong to high alumina low silicon powder, with Brazilian powder increasing, the Al2O3 content of finished sinter is increased significantly, which is conducive to promoting the formation of acicular structure calcium ferrite, amount of Al2O3 content is benefit to the sinter[4], but the content can’t exorbitant, otherwise, it can make the sinter of low temperature reduction degradation rate increased, sinter quality drops, also can obviously improve the sinter quality fractal dimension.
Online since: November 2012
Authors: Bao Zhong Wu, Guo Xi Li, Jing Zhong Gong, Jing Qiu, Xin Yin
The experimental data analysis method was used in this paper.
The measured data in the assembly process was collected, and cloud model theory [23] was introduced to build the assembly cloud model for the data analysis and mining.
Step2:Original measurement data was expressed in concepts.
Data is processed applying cloud generator maximum determinant method.
For the 28 sets of data, decision table after data processed is shown in Table 3. 0 indicates that the data does not belong to the concept and one denotes that it belongs to the concept.
Showing 3861 to 3870 of 40290 items