Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: January 2013
Authors: Ajay K. Singh, Suman Lata
According to Schmitt [15] and Yuan and Pehkonen [16], following reactions are responsible for corrosion in the media without Cl- (Baar’s media in the present case)
Oxidation: Fe +HS- à FeS(1+x) + 1.14H+ +2.28e- (at anodic site)
Reduction: FeS(1+x) + H2O + 2e- à FeSx + HS- + OH- (at cathodic site)
Table 2 : Maximum pit depth (µm) of stainless steels in immersion test
Metal
Exposure time (days)
Maximum pit depth (µm)
Control
Inoculated
Baar’s media
NaCl sol.
Sea water 7 ND ND 16 ND 28 32 21 ND 22 28 45 50 55 304L 35 35 40 46 72 78 88 50 40 48 55 95 112 128 90 69 75 85 112 125 146 316L 7 ND ND 11 ND 22 30 21 ND 16 22 35 48 51 35 20 36 42 69 78 87 50 35 40 50 80 87 102 90 48 55 72 86 99 112 7 ND ND ND ND 16 22 21 ND ND 19 ND 21 28 2205 35 ND 19 25 15 27 39 50 10 25 32 32 59 71 90 22 32 44 40 68 83 Whereas in media with Cl- (NaCl solution and sea water), the reactions are: Oxidation: Fe +HS- à FeS(1+x) + 1.14H+ +2.28e- Fe + 2Cl- + H2O à Fe(OH)+ + Cl- + HCl + 2e- (at anodic site) Fe(OH)+ + H2O à Fe(OH)2 + H+ Reduction: FeS(1+x) + 2e- + 2Na+ + H2O à FeSx + Na+ + SH- + NaOH (at cathodic site) Thus anode in Cl- containg sulfide media will be more acidic than that without chloride.
EDS data show highest amount of C, P and S in pits formed on metal exposed to sea water followed by NaCl solution and Baar’s media.
Sea water 7 ND ND 16 ND 28 32 21 ND 22 28 45 50 55 304L 35 35 40 46 72 78 88 50 40 48 55 95 112 128 90 69 75 85 112 125 146 316L 7 ND ND 11 ND 22 30 21 ND 16 22 35 48 51 35 20 36 42 69 78 87 50 35 40 50 80 87 102 90 48 55 72 86 99 112 7 ND ND ND ND 16 22 21 ND ND 19 ND 21 28 2205 35 ND 19 25 15 27 39 50 10 25 32 32 59 71 90 22 32 44 40 68 83 Whereas in media with Cl- (NaCl solution and sea water), the reactions are: Oxidation: Fe +HS- à FeS(1+x) + 1.14H+ +2.28e- Fe + 2Cl- + H2O à Fe(OH)+ + Cl- + HCl + 2e- (at anodic site) Fe(OH)+ + H2O à Fe(OH)2 + H+ Reduction: FeS(1+x) + 2e- + 2Na+ + H2O à FeSx + Na+ + SH- + NaOH (at cathodic site) Thus anode in Cl- containg sulfide media will be more acidic than that without chloride.
EDS data show highest amount of C, P and S in pits formed on metal exposed to sea water followed by NaCl solution and Baar’s media.
Online since: September 2019
Authors: Van Thuy Tran, Nguyen Huu Loc, Hoang Hiep Nguyen
The reduction of these vibrations is a common way to address the problem [6].
The measured data is analysed and processed on NI Signal Express software.
The machine's vibration amplitude using damping system shows the reduction of 75.3%, compared to that using the non-damping system in the same machining conditions.
The measured data is analysed and processed on NI Signal Express software.
The machine's vibration amplitude using damping system shows the reduction of 75.3%, compared to that using the non-damping system in the same machining conditions.
Online since: July 2020
Authors: Wan Maisarah Mukhtar, Affa Rozana Abdul Rashid, Karsono A. Dasuki, Syahida Suhaimi, Nur Athirah Mohd Taib, A.N.A. Latiff
Therefore, the sensitivity of tapered POF towards environmental changes will increased due to the reduction in fiber diameter that can strongly enhancing the evanescent wave [2].
The diameter reduction is essential to increment the sensitivity of sensor compare to the bare POF.
Interface B Outer medium Evanescent Field Interface A Figure 6 Sensing mechanism of modified cladding region Table 2 shows the data interpretation of output power for 20 mm of ZnO coated POF to detect the methanol concentration that range from 0 to 50 v/v%.
The diameter reduction is essential to increment the sensitivity of sensor compare to the bare POF.
Interface B Outer medium Evanescent Field Interface A Figure 6 Sensing mechanism of modified cladding region Table 2 shows the data interpretation of output power for 20 mm of ZnO coated POF to detect the methanol concentration that range from 0 to 50 v/v%.
Online since: October 2014
Authors: Tiziano Manfredini, Alberto Muscio, Chiara Ferrari, Cristina Siligardi
Introduction
Cool roof are one of the most successful mitigation strategies for the reduction of the Urban Heat Island effect.
It can be achieved through thermal insulation in summer and reduction of the solar gain through transparent and opaque element in summer.
Table 3 - Reflectance data of non pigmented glazed samples according to ASTM E903 using AM1GH irradiance spectrum AM1GH Matt 02 Recycled glass 02 Transparent 02 White 02 Matt 04 Recycled glass 04 Transparent 04 White 04 No pigment 0.853 0.843 0.840 0.869 0.845 0.832 0.840 0.863 On Figure 2 the solar reflectance colored glazes with a 200 µm thickness is reported.
It can be achieved through thermal insulation in summer and reduction of the solar gain through transparent and opaque element in summer.
Table 3 - Reflectance data of non pigmented glazed samples according to ASTM E903 using AM1GH irradiance spectrum AM1GH Matt 02 Recycled glass 02 Transparent 02 White 02 Matt 04 Recycled glass 04 Transparent 04 White 04 No pigment 0.853 0.843 0.840 0.869 0.845 0.832 0.840 0.863 On Figure 2 the solar reflectance colored glazes with a 200 µm thickness is reported.
Online since: January 2013
Authors: Fu Quan Deng, Jian Zhong Ma, Chao Hua Xue, Zhou Yang Duan
With the existence of cells in the matrix, EVA foams show light weight (in the range 150-250 kg/m3), cushioning performance, cost reduction, thermal and acoustic insulation, presenting a suitable choice for many industrial applications such as construction materials, thermal and sound insulators, packaging, and light weight materials for transportation industries [8].
Keun-Wan Park reported that the plastic buckling of cell walls and energy dissipation by the chain slipping might lead to the reduction in thickness after aging in compression [12].
Synthesized all collected data we found that within 3 phr OMMT, the foamed samples showed higher improvement of performance with higher clay content.
Keun-Wan Park reported that the plastic buckling of cell walls and energy dissipation by the chain slipping might lead to the reduction in thickness after aging in compression [12].
Synthesized all collected data we found that within 3 phr OMMT, the foamed samples showed higher improvement of performance with higher clay content.
Online since: June 2013
Authors: Hamdaoui Mohamed, Guénhaël Le Quilliec, Piotr Breitkopf, Pierre Villon
The model is tested against external data showing a high
level of accuracy.
[9] Rajan Filomeno Coelho, Piotr Breitkopf, Catherine Knopf-Lenoir, Pierre Villon Bi-level model reduction for coupled problems.
Model reduction for multidisciplinary optimization application to a 2d wing.
[9] Rajan Filomeno Coelho, Piotr Breitkopf, Catherine Knopf-Lenoir, Pierre Villon Bi-level model reduction for coupled problems.
Model reduction for multidisciplinary optimization application to a 2d wing.
Online since: November 2020
Authors: Hirokazu Ishitobi, Nobuyoshi Nakagawa, Satoshi Sugawara, Kosuke Oba
In contrast, the cost reduction of the VRFB by improvement of the current density [18] with lower internal resistances, e.g., the mass transport resistance and the reaction resistance, is still required for its commercialization.
From the aforementioned data, the fraction of Uloss in the discharged energy was 4.0% for both the unloaded electrode and the composite-upstream electrode.
Nogami, Mechanism of Dioxovanadium Ion Reduction on Oxygen-Enriched Carbon Surface, J.
From the aforementioned data, the fraction of Uloss in the discharged energy was 4.0% for both the unloaded electrode and the composite-upstream electrode.
Nogami, Mechanism of Dioxovanadium Ion Reduction on Oxygen-Enriched Carbon Surface, J.
Online since: May 2020
Authors: Cheng He, Kai Xu, Yan Li, Bao Liang Shi, Yao Wen Tang, Guo Jie Wei, Chao Zhang
There was no occurrence of large M6C carbides in this case, and the carbides on the grain boundaries showed no serious aggregation and coarsen, so the tensile strength at room temperature did not produce a dramatic reduction.
However, it is apparent that there was the largest reduction calculated to be about 8.8% of the as-received tensile strength at high temperature after aging for 500h compared to that of 1000h and 3000h, which indicates that the bainitic lath microstructure plays an important role in the high temperature tensile strength.
[8] NRIM Creep Data Sheet No. 38, NIMS (formerly NRIM), Tsukuba, 1986 (in Japanese)
However, it is apparent that there was the largest reduction calculated to be about 8.8% of the as-received tensile strength at high temperature after aging for 500h compared to that of 1000h and 3000h, which indicates that the bainitic lath microstructure plays an important role in the high temperature tensile strength.
[8] NRIM Creep Data Sheet No. 38, NIMS (formerly NRIM), Tsukuba, 1986 (in Japanese)
Online since: June 2020
Authors: Jin Won Park, Harish Kumar, Avneesh Kumar Gehlaut, Himanshu Gupta, Ankur Gaur
Several prior studies have been conducted to produce CuO-NPs such as chemical, thermal, sono-chemical reduction, vacuum vapour deposition, radiation methods, micro-emulsion techniques or laser ablation.
As pH increases the maximum absorbent band strength to pH 7 at 610 nm, the decrease Cu2+ ions to CuO atoms increases, the reduction of Cu2+ ions as well as CMC’s dual role as a competent stabiliser and reducing agent. [2,3].
The Fig. 4 (b) reveals that the equilibrium swelling data collected from (NaCl), (CaCl2) and (AlCl3) the same amount of salt solutions.
As pH increases the maximum absorbent band strength to pH 7 at 610 nm, the decrease Cu2+ ions to CuO atoms increases, the reduction of Cu2+ ions as well as CMC’s dual role as a competent stabiliser and reducing agent. [2,3].
The Fig. 4 (b) reveals that the equilibrium swelling data collected from (NaCl), (CaCl2) and (AlCl3) the same amount of salt solutions.
Online since: August 2016
Authors: Hendra Suherman, Jaafar Sahari, Abu Bakar Sulong, Duskiardi Duskiardi, Irmayani Irmayani
However with orthogonal array, the number of trials can be minimized using L9 orthogonal array.
2.6 Data analysis
In order to obtain the maximum outcome from this study which is maximum flexural strength, the bigger the better characteristic was chose based on Taguchi method which defined as:
η=-10log(MSD) (1)
Where η is signal to noise ratio (S/N) and MSD is the mean square deviation of the objective function, and given as:
MSD=1ni=1n1yi2 (2)
Where n is the number of repeated experiments for each combination of control factors, and yi is the measured flexural strength of the CB/G/EP nanocomposites at its repeating experiment.
3.
Lye, Void reduction in autoclave processing of thermoset composites: Part 1: High pressure effects on void reduction, Compos, 23(1992) 261-265
Lye, Void reduction in autoclave processing of thermoset composites: Part 1: High pressure effects on void reduction, Compos, 23(1992) 261-265