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Online since: October 2025
Authors: Oksana Mykchaylova, Anatoliy Negriyko, Konstantin Lopatko, Natalia Poyedinok
Data are presented as mean ± standard error.
Data are presented as mean ± standard error.
Data are presented as mean ± standard error.
Data are presented as mean ± standard error.
Data are presented as mean ± standard error.
Online since: November 2014
Authors: Ying She Luo, Jian Xin Su, Yong Zhong Zhang, Sheng Ming Chen
Set D/A output be zero and then activate A/D to acquire data.
In the meanwhile D/A input data were being adjusted according to the size and the polarity of acquired data of A/D in order to decrease A/D collected data gradually.
While the collected data of A/D closing to zero, D/A input data are saved as the corresponding pixel’s zero point correction value.
That is to make data acquisition system to gather data continuously (not working data collection) before working data collected.
Place the sensors in a constant magnetic field and start the data acquisition system to collect each pixel’s data several times.
Online since: June 2015
Authors: Gheorghe Voicu, Gigel Paraschiv, Mirela Dincă, Georgiana Moiceanu
Introduction The worldwide reductions of conventional energy resources, as well as the restrictive legislation regarding the level of environmental pollution, have created premises for the identification and exploitation of new economic and clean energy sources.
According to the latest available data, it reached 8.3 million t of oil equivalent in 2009, fact which represents an increase of 4.3% compared to 2008.
Conclusions Anaerobic digestion process of animal manure offers several environmental, agricultural and socio- economic benefits throughout improved fertilizer quality of manure, considerable reduction of odors and inactivation of pathogens and last but not least production of biogas production, as clean, renewable fuel, for multiple utilizations.
European directives relating to the renewable energy production, the reduction of greenhouse gas emissions and sustainable waste management is based on the commitment of Member States to implement appropriate measures to reach them.
The concern for environmental risks reduction, sustainable development and use of renewable energy sources, have gained important valences in recent years, fact that led to adopt significant measures in our country, among which is found the process of anaerobic digestion.
Online since: June 2019
Authors: Calin Dumitru Coman, Dan Mihai Constantinescu
Poorly designed hybrid joints are not only a source of failure but could lead to a reduction in durability and reliability of the whole structure.
The major disadvantage of the CDM models is the huge amount of test data required for model calibrations.
Because these properties degradation models used constant factors for elastic properties reduction due to damage growth, the models weren’t be able to predict the bearing final failure.
Nonlinear shear deformation The simulation must consider the two most important nonlinear mechanisms: lamina nonlinear shear deformation and stiffness reduction due to damage accumulation at lamina level.
After the point A, the damage accumulation determines joint stiffness reduction gradually and the characteristic curve becomes nonlinear.
Online since: December 2024
Authors: Abdullah Abdullah, Yulia Hayati, Wahyuni Wahyuni, Sri Mulyati
Results of XRF Zeolite Chemical Composition Based on the XRF results chemical composition data of natural zeolite, river sand, sea sand are obtained, as shown in Table 2.
These hydration products contribute to an increased density in the concrete, resulting in a notable reduction in absorption values.
However, the reduction is not too large when compared to concrete without zeolite (see table 4).
Compressive strength of concrete with sea sand and seawater at ages 14 and 56 days However, the reduction is not too large when compared to concrete without zeolite (see table 4).
The addition of zeolite to the cement-sand mixture can cause an increase in the strain rate at failure, as well as a reduction in brittle behavior in concrete (Mola-Abasi and Shooshpasha 2016a).
Online since: January 2019
Authors: Yuan Qin, Sen Yang, Zi Yun Chen, Guo Qing Wu, Ming Huang, Alimjan Ablat, Han Lu Jiang
BMs were subjected to compression with the height reduction of 5 % to 15 % in the compress speed of 0.08 mm/s at room temperature, and then annealed at temperature ranging from 400 to 700 °C for 15 min.
Typically, EBSD data includes the Cartesian coordinate location of each orientation corrected for the 70° tilt of the sample.
For the series specimens with 5 % reduction ratio, the pre-strain is so low that the low stored energy seems unable to supply sufficient driving force to trigger recrystallization.
When the reduction ratio increased to 10 % and 15 %, the grain size increased dramatically with increasing temperature, especially when the temperature is not higher than 600 °C.
Though the highest fraction of low-ΣCSL boundaries was obtained via 5 % reduction combining annealing at 700 °C, the grain size grows too large for practical use at this condition.
Online since: February 2011
Authors: Jian Chao Dong, Tie Jun Yang, Xin Hui Li, Zhi Jun Shuai, You Hong Xiao
Principle of PCA Usually, it’s hard to understand some phenomenon by measuring various quantities in system because the data appears clouded and redundant.
As shown in Fig. 1a, it gives a scatter plot of data(x, y), which reveals evident linearity.
(a) (b) (c) Fig. 1 (a) scatter plot of data.
(c) variance ratio with rotation angle Let X be matrix of data: where N is the number of sensors and P is the sampling number, NP in our case.
Firstly each response data record xN is sectioned into L adjacent time segments xNl(p)(l=1,…,L) of K samples each with 50% overlap, then each segment is multiplied by a window function d(t), which could taper the data at both the beginning and end of each record to make the data more suitable.
Online since: September 2009
Authors: Xue Ping Zhang, Guang Hui Lu, Er Wei Gao
Based on the Basquin equation, the model is validated by experimental data published in literature.
The variance and standard deviation are measures of absolute scatter, while the CV is useful to compare the variation in multiple data sets that have different mean value, is a relative scatter.
A Boxplot is particular useful for showing the distributional characteristics of data, such as median, the range, the first quartile value (Q1), the third quartile value (Q3) and outliers.
As fatigue test is time-consuming and costly, time and financial are limit, published experimental data in literature are quoted to validate the model. 3 sets of experimental life data in Table 1 used to build a S-N curve, and 2 sets of experimental life test data used to validate the prediction in Table 2, and the bulk ultimate strength of hardened Gcr15 is 1617MPa are quoted from literature [10].
The FLV of samples are predicted by a simplified fatigue life prediction model incorporating the resultant residual stresses scatter induced by machining process, and verified by quoting experimental data from literature.
Online since: January 2012
Authors: Zhi Rong Tang, Ming Bo Ma, Hai Xiang Li, Xiao Shuang Zhao, Wen Long Zhou
The data indicated that these treatments had no significant impacts on supramolecular structure, heat-resistant quality, and single fiber strength of green cotton.
Crystallinities of fibers were calculated from diffraction intensity data using two different methods [14].
Similar to the white cotton fiber [15], naturally green cotton fiber had five diffraction peaks (data for 2θ) located in about 15.4°, 16.3°, 21.1°, 22.4°and 35.1°.
It is known from the data of Table 2 and Fig. 2, that the internal microstructure of green cotton fibers after various treatments is basically unchanged, and remains crystal structure of cellulose I.
Fibers after treatments still meet the spinning need for its strength reduction was insignificant.
Online since: November 2011
Authors: Jian Guang Li, Li Hui Tian, Li Ping Tong
Data indicates that in the same index of energy saving, this system can not only meet the needs of the code, but also reduce the requirement of heat insulator, as well as greatly improve anti-cracking and waterproofing ability.
By the comprehensive analysis of [3] –[6], we can learn that energy efficiency in buildings is the foundation of achieving energy saving and emission reduction targets.
(2) The XKT can reduce the amount of insulation material by making full use of the air layer. and when using polyurethane insulation material, we can make use of 20mm~25mm air layer; when using polystyrene board, we can use 30mm~35mm air layer, this would be a more substantial reduction of the demand for insulation material, thereby reducing the carbon emissions from the production process; at the same time, in the same amount of insulation material circumstances, the system can greatly improve the thermal insulation performance
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