Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: October 2023
Authors: Tamer Ali Sebaey
The data was used to calculate the impact energy.
The energy absorbed during the impact was calculated from the force and displacement data.
The results of the bolted joint showed reduction in the stiffness by adding the thin-plies and this reduction is a function of the way of distributing the thin plies in the laminate.
The data are normalized by the baseline laminate resistance.
Online since: January 2012
Authors: Vahid Abedini, Mohammad Hasan Siahmargouie, Mohsen Shakeri
Dimensional variation reduction of the product is a crucial engineering objective in both design and manufacturing stages.
Unfortunately, variation reduction for machining processes is a challenging problem, particularly for a process that includes multiple operation stages [2].
At each single stage, there are many types of errors such as fixture, machine tools and datum errors.
The third source of error (datum error) is due to the manufacturing error of the workpiece.
Fig.1 explains the effect of datum and fixture errors.
Online since: June 2010
Authors: Zan Min Wu, Fang Dong
Azo dye biodegradation usually starts with the reduction of the azo bond by specific enzymes.
These data suggest that the biodecolorization of Acid red B can be enhanced by microaerophilic culture with strain B.
These data were clearly higher than the reducing rates of 88.9% and 86.5% in Zn(II)-free and Ba(II)-free SWM.
These data suggested that the biodecolorization of Acid red B was inhibited when Fe(II) or Fe(III) had formed some more complex organic material with Acid red B dye.
The ability of corynebacterium variabile to express azo reduction activity is desirable for biodegradation when trace metal is used as electron acceptors.
Online since: September 2014
Authors: Jun Liu, Yan Lei Sun, Lin Wang Li, Wei Qi
Building materials is the basis of the construction industry; the relevant data show that the carbon emissions of building materials accounted for 9% ~ 12% of the building life cycle carbon emissions in China [1].
Thus, it contributes to reduce the overall carbon emissions of construction and the China's overall CO2 reduction plan.
For the rural roofing materials, if it indiscriminately uses the carbon emissions data about city building materials, the accuracy will be greatly discount.
This research reveals that the calculation of village roofing materials life cycle CO2 emissions need to make reasonable assumptions to select and determine the village roofing materials activity data, emission factors of various kinds of energy, transportation distance, means of transportation and other parameters according to the actual situation of villages.
Carbon Emissions and Research on Reduction Path in China [D].
Online since: December 2012
Authors: Kittichai Triratanasirichai, Karoon Fangsuwannarak
Each engine test was repeated 3 times for calculating the average data.
The software provides extraordinary data management capability and the ability to import/export data.
This reduction value is an improvement indicator for the formation of smaller molecules in the test fuels.
This suggests that the existence of organic composition presents a significant reduction in carbon residue.
Online since: October 2016
Authors: Paul Blackwell, David Carty, John Storr, Nicola Zuelli, David Savings, Mohamed Mohamed
The main advantages of sheet hydroforming are: improvement of material formability, reduction of the effect of friction on the formed part accuracy and the reduction of forming stages [3].
Experimental Programme In all experimental trails, the Inconel 718 sheet material with a thickness of 1.6 mm and chemical composition (50 - 55 % Ni+Co, 17 - 21 % Cr, BAL Fe, 4.75 - 5.5 % Nb+Ta, 2.8 - 3.3 % Mo, 0.65 - 1.15 % Ti and 0.2 - 0.8 % Al) was used.In the numerical calculations of the forming process the material data presented in Table 1 were used.
Material data used in the FEM calculations Paramter Value Density[g/cm3] 8.19 Young’s Modulus E [GPa] 200 Yield Stress (0.2 %) Rp0.2 [MPa] 492 Tensile Strength Rm [MPa] 902 Uniform Elongation [%] 43 Normal Plastic Anisotropy Ratio[-] 0.92 Experimental Setup and Process Design.The optimisation of load path and process design was a key part in this study.
Robust material characterisation data for Inconel 718 material was generated and used to develop a FEA model.
Online since: August 2022
Authors: Pham Son Minh
The optimization process focuses on the uncritical sections that required reduction.
The shape generator module helps engineers determine the most optimal design for boundary conditions and input data.
To achieve this, data such as mass target, preserve region, and symmetry plane must be included in the analysis.
The Fig. 5 shows the shape of the optimized design after running the analysis, but this is based only on mesh data.
Fig. 8 The displacement of the I-beam is optimized Fig. 9 Von Mises stress comparison chart for the two designs Fig. 10 Displacement comparison chart for the two designs Table 2 Comparison of the masses of two I-beams Original I-Beam 10.928 kg Optimized I-Beam 9.580 kg Percentage reduction (%) 12.34% Conclusion An I-beams were analyzed in Inventor to determine the stresses and displacements of their parts.
Online since: April 2014
Authors: Nur Hashimah Alias, Effah Yahya, Ahmad Hilmi Ghazalli, Tengku Amran Tengku Mohd
Simulation window of DEA circulation as in Figure 3, while Table 2 shows the operating data used.
Fig 3: DEA circulation rate modification window Table 1: Typical operating data of amine-acid absorber Parameters Value Inlet gas flowrate [MMscfd] 25 Inlet liquid flowrate [m3/hr] 42 Inlet gas temperature [°F] 86-95 Inlet liquid tempearature [°F] 95-104 Amine concentration [%wt ] 25-30 Gas in pressure [psia] 1000-1100 Liquid amine in pressure, [psia] 995-1050 H2S inlet gas composition [%mole] 4-7 CO2 inlet gas composition [%mole] 1-4 Results and Discussion In this situation the sweet gas must be reduced to 4 ppm of H2S and 2-3% moles of CO2.
The reduction of the acid gases was decreased as the gas flow through more trays until the reduction rate about 0.1% moles per tray and reduced to the specification of the gas.
Engineering Data Book.
Online since: May 2011
Authors: Wei Ke, Jian Qiu Wang, Zhi Ying Wang, En-Hou Han
During the test, the resistance of gauge part of specimens increased due to the reduction of the cross section area and the elongation of the gauge length, so a direct current (d. c.) potential drop method was adopted to detect the potential drop of the gauge part of the sample during SSRT and the data of potential drop were collected by an accurate multimetre Model 2001 from Keithley Instruments Inc.
The stress-strain data and the potential drop data were continuously recorded by two computers respectively.
Hydrogen reduction takes place via the following reactions as shown in Eq.1, Eq.2 and Eq.3[11]: (1) (2) (3) Reaction (1) is related to the decomposition of water, and H+ is reduced by the cathodic current at the cathodic site and the OH- diffuses to the anodic site for oxidation.
Online since: January 2013
Authors: Yuuki Ishida, Hajime Okumura, Hidekazu Tsuchida, Kazutoshi Kojima, Sadafumi Yoshida, Shi Yang Ji
It is found that decreasing Tg causes a slight reduction of growth rate (several percent) but promotes Al dopants concentration (NAl).
It must be noted that, for the samples having NAl > 1.5´1020 cm-3, the measured signal of Hall voltage is extremely weak and difficult to be distinguished from background noise, and then those data-points are omitted due to the poor measurement accuracy at the moment.
Fitting the data points reveals that, both ρr and mp decline in two stages, at lower NAl (< 9.6´1019 cm-3) their slopes are -0.85 and -1.5, while they are -2.1 and -2.6 at higher NAl, respectively.
Referring the literature [7] knows that the increase of activation ratio can be explained as the reduction of Al ionization energy; it declines from 170 to 70 meV approximately on the samples with NAl from 9.6´1019 to 1.5´1020 cm-3.
Though the Hall-effect data from samples with NAl > 1.5´1020 cm-3 are absent, it can be inferred from Fig.5 that, Al dopants will be completely activated, when the doping level is high enough around the reported solubility-limit of 2´1020 cm-3 [8] due to the sufficiently low Al ionization energy.
Showing 13631 to 13640 of 40357 items