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Online since: August 2014
Authors: Li Ping Chen
X-ray powder diffraction (XRD) data were taken with a Ni filter and Cu Kα radiation (λ=0.15418nm), on the D/MAX-IIIC powder diffractometer (Physics Co.), operated in the θ:2θ mode primarily in the 10-80˚ (2θ) range and step-scan of 2θ=0.02˚.
UV–vis absorption spectra of CTAB-stabilized gold colloids prepared by n-butanol situ reduction in W/O microemulsion under 30°C at the different molar ratios of CTAB/C18NH2.
These results show that monodispersibility of (CTAB+ C18NH2)-capped Au nanoparticles obtained through n-butanol reduction under 30°C is relatively high than the traditional methods [8, 9].
Conclusions We have successfully synthesized the (CTAB + C18NH2)-capped gold nanoparticles with a safe organic mixed solvent by n-butanol in situ reduction at room temperature (30°C).
In the slow reaction process of n-butanol situ reduction chloroauric acid, adding a small amount of alkyl amine, it can significantly weaken the guiding role of CTAB, which indicate that the dual effect of surfactant and emulsion droplet template can control the synthesis of the size and the morphology and the stability of the hydrophobic gold nanoparticles by the slow reduction system in the W/O microemulsion.
Online since: August 2013
Authors: Zhao Yang Chen, Chong Long Tang
This competition decreases concentration of the radicals like H, O and OH, leading to a significant reduction in laminar burning velocity.
The advantages in using DME are low combustion noise, low smoke and CO emissions, high thermal efficiency and certain degree of NOx reduction.
However, NOx emission of DME fueled engines still requires further reduction to meet stringent emission regulation.
This reduces concentration of the radicals like H, O and OH, leading to a significant reduction laminar burning velocity.
Journal of Chemical and Engineering Data, 1959,4(3):226-237
Online since: May 2010
Authors: Derek J. Fray, Carsten Schwandt, Greg R. Doughty
These refer to unit activities at 900°C and the Ca/Ca 2+ standard, with pure liquid CaO as the reference state for the oxide, and have been calculated from known thermodynamic data.
These issues prompted a second in-depth study on TiO2 reduction [10].
Fig. 5 shows a current versus time curve recorded during a reduction experiment of the above type.
Two cases in point are the preparation of Ti coatings on steel through the reduction of deposited TiO2 [12], and the preparation of highly porous Ti metal through the reduction of TiO2 precursors containing fugitive additives [13].
The main concern is that this parasitic reaction results in a reduction in the current efficiency.
Online since: July 2012
Authors: Jie Bai, Chun Ping Li, Hui Jie Duan, Tong Xu
In the experiment, electrospinning method, soaking and adsorption method, together with reduction method were used to achieve the aim of coating.
The electrospinning process was performed at 20˚C. 2.4 The adsorption and reduction of copper nitrate molecule The previously prepared composite nanofiber mat was put into 100 ml 0.2 mol/L copper nitrate water solution and left for 12 or 24 hours.
The original colour of the mat turned to brown immediately, indicating the reduction of the Cu2+ irons.
XRD data was collected on a Philips X’Pert diffractometer using Cu Kαradiation(λ=1.5418).
The measurements were made in reflection geometry, and the 2θdiffraction (Bragg) angles were scanned at a step of 0.02.Each data point was measured for at least 12s, and several scans were taken of the sample.
Online since: October 2012
Authors: A.K.M. Nurul Amin, Mohamed Shaik Dawood, I. A. Wazir, I.H. Jaafar, Q.H. Shah
The simulated free vibration data is compared to those obtained via experiments.
The results are compared to experimental data obtained via knocking tests.
The software FFT module was used to obtain the frequency data from the time domain input.
However there is a large discrepancy in data for the 100 and 120 mm overhang cases.
The simulated frequency data is comparable to the experimental data, for the shorter overhangs of 50 and 70 mm.
Online since: May 2023
Authors: Phanphong Kongphan, Chawalit Inpunyo, Sirichai Torsakul, Suthiwat Waewdee, Adisorn Laohavanich, Pun Wirot, Somkuan Vaodee
Additionally, the slag percentage reduction was increased significantly due to an elevation of the temperature.
The observation of the data using ANOVA requires the certain assumptions to be satisfied, including a normal distribution of the errors, data independent and variance stability.
The data independent verification using scatter plot showed that there was no obvious pattern of the residual of the percentage of slag on one hand as shown in Fig. 4(B).
Therefore, it can be concluded that the data had an acceptable level of variance stability.
Additionally, the slag percentage reduction was increased significantly due to an elevation of the temperature.
Online since: November 2012
Authors: Tao Li, Cui Cui Pan, Qi Fen Li, Wei Dong Sun, Zhi Tian Zhou, Li Feng Zhao
According to the data, the quantity of energy saving is calculated.
The data is shown in Table 1 and test date is Jan 19. 2012.
Table 1 Floor air test data Time RH (%) Air supply temp.
The data are shown in Table 2.
Table 2 Floor new air test data Time RH (%) Air supply temp.
Online since: December 2012
Authors: Mohd Ambar Yarmo, Wan Nor Roslam Wan Isahak, Mohamad Bin Kassim, Nor Asikin Mohamad Nordin, Noraini Hamzah
This suggested that a sort of metal activation affect such as in situ reduction occurred during the repeated reaction.
In order to confirm in situ reduction had occurred during the repeated reaction, XPS analysis of used catalyst after each reaction were carried out to study the chemical state of Ru 3d species.
This result confirmed that in situ reduction had occurred during the repeated reaction and this made the activities of the catalyst increased upon recycling due to the availability of more metallic Ru on the surface of the catalyst.
The solid samples were held by a double-sided tape and all conditions of sample preparations, recording of the spectra and data processing were identical for all samples.
In contrast, Ru4+ species (BE 282.0 eV) decreasing during the repeated reaction due to in-situ reduction of Ru4+ to Ru0.
Online since: December 2012
Authors: Yu Zeng Zhang, Shan Chai, Xue Jian Jiao
According to the experimental data, the damping parameter was calculated by means of the response surface method.
The reduction of Magneto-rheological vibration system adjusts the damping force by controlling the magnetic field intensity because Magneto-rheological fluid changes greatly under the effect of magnetic field.
According to the Lenz's law, the induced magnetic field generated by the induced current is always hindering the change of magnetic flux density; therefore, the induced magnetic field is able to slow down the relative motion between the permanent magnets and plays a role in vibration reduction.
According to the practical engineering experience, quadratic polynomial was usually selected and its form is written by: (11) Where is fitting function, αi is an undetermined coefficient and xi is a data point.
In this paper, the distribution for magnetic induction intensity of induction coils was got by using the matlab programming in [10] and the coefficient of magnetic induction function was fit by using response surface method of quadratic polynomial through screening of the reasonable data points.
Online since: July 2014
Authors: Fernando M.B. Marques, Daniel A. de Macedo, Aleksey A. Yaremchenko, Dulce M.A. Melo, Filipe M. Figueiredo, Flávia M. Aquino
Rietveld XRD data refinement were carried out using CGAS computer program to estimate lattice parameters and identification of the compounds were performed by comparison with data from JCPDS.
Impedance data were corrected for electrode area and divided by two (symmetric cell) to obtain the ASR of each cathode.
Based on the XRD data, lattice parameters were calculated, see Table 1.
Table 1 – Lattice parameters obtained by Rietveld of XRD data.
(a) (b) Figure 4 - Experimental impedance plot data fitted with equivalent circuit by Zview for the tested materials at 650 °C (a) BSSCF and (b) BSNCF.
Showing 4281 to 4290 of 40694 items