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Online since: November 2005
Authors: Jeong Tae Kim, Xinghong Zhang, Jong Jin Park, Hyu Sun Yu
Based on the tensile strength, impact toughness and field application, the optimized holding times were determined as 30minutes in T922 and 60minutes in T929 type welds respectively. 2) Hardness Reduction in HAZ.
As a result, it was shown that stress reduction factor due to this type IV cracking could be 50% for 100,000hours test.
In order to compare the effect of the filler metal on the creep strength, 105 hr creep rupture strengths for T23 [4], T91 [9], and two dissimilar weld joints were determined based on the average creep data and plotted with temperature in Fig. 6. 105hr creep rupture strengths of T91, T23, T922 type, and T929 type dissimilar welds at 600o C were 97.2, 94.6, 93.8, and 88.7MPa respectively.
Online since: November 2013
Authors: U. Hashim, Tijjani Adam, Azizan Aziz, Wei Wen Liu, Siang Piao Chai, Abdul Rahman Mohamed
The catalyst used in this study is free from preceding reduction in hydrogen.
They explained this result by the fact that the degree to which metallic iron accumulates upon reduction into metallic particles depends on the iron content.
We also measured the outer diameters of 28 MWCNTs formed by 1Fe3O4/MgO catalyst and the data was presented in Fig. 6b.
Online since: March 2013
Authors: Mohamed Abdelall Ibrahim, Faten Fares Fouad
Excellent light diffusion and reduction of solar transmission .
Nanosensors and Smart Environments: Initially, building components will become smarter, gathering data on temperature, humidity, vibration, stress, decay and a host of other factors.
suggests that 40 % of the energy savings required to achieve necessary carbon reductions could come from the building sector, Better building envelope design, daylighting, more efficient artificial lighting, and better efficiency standards for building components and appliances are all opportunities to make the building industry the leader in fighting global climate change and advancing sustainable development and energy conservation.
Online since: February 2019
Authors: D.I. Kinzin, S.A. Levandovskiy, Natalya S. Soloveva
In addition, reports should include checksums that will show the reliability of the information provided, for example, the amount of rolled steel according to AIS data and the actual amount for the same period.
Therefore, the greatest effect can be expected from reduction of the insurance stock.
This is possible due to a clearer definition of grooves stability and rolls consumption, and therefore a smaller re-evaluation of the risk of formation of rolls deficit [9], reduction in the number of errors and a more rational combination of grooves.
Online since: June 2014
Authors: Toyohiko Yano, Dušan Bučevac, Vesna Maksimović, Snežana Nenadović, Jelena Pantić, Devendraprakash Gautam, Branko Matovic
There are many available synthesis routes for synthesis of HfC powders such as direct combination of the elements at elevated temperature,mechanical activation of solid-state precursors, carbothermal reduction of metal oxide compounds, vapor phase synthesis, sol–gel, electrochemical synthesis in molten chloride bath, laser induced reactions, plasma-chemical synthesis, pyrolysis of metal organic compounds [10-17].
Density data and the values of the mechanical properties are summarized in Table 1.
Cheng, Syntheis of HfC powder by carbothermal reduction of modified hafnium alkoxide precursors, Adv.
Online since: September 2016
Authors: J. Santhip, M.J. Giri Prasad, N. Jerome Santharaj, Dinesh Ramesh, A.S. Abhishek Raaj, R. Rishi Kumar
Dynamic light scattering (DLS) is a technique used for measurement and interpretation of light scattering data on a micro second time scale.
On the other hand, the nanofluid prepared with physically functionalized MWCNTs, by the addition of Gum Arabic surfactant produced a reduction in the thermal conductivity of the base fluid by 18.96% which is represented in Fig.6.
However in this case since most of the nanoparticles underwent agglomeration with particles of same nature and with the foreign particles of basefluid, large scale sedimentation took place which in turn caused the reduction in thermal conductivity of the distilled water.
Online since: September 2019
Authors: Aleksey A. Lukyanov, Boris S. Ermakov, S.A. Vologzhanina, Sergej M. Bobrovskij, Ranita Lee
Some reduction in the chromium content allows the introduction of elements that contribute to the improvement of the complex properties at low temperatures.
The introduction of vanadium together with nitrogen leads to the grinding of the dendritic structure, hardening of steels by dispersed particles, and the reduction of the embrittlement effect of nitrogen [26-27].
The obtained data on the MAS efficiency made it possible to draw the following conclusions: According to the table, the bodies of steel 07X13G28ANFL have higher properties and withstand a higher internal pressure compared to the bodies of cast steel 12X18N10TL.
Online since: September 2020
Authors: Nor Atiq Syakila Mohd Nazmi, Farook Adam, Wan Nur Aini Wan Mokhtar, Nurasmat Mohd Shukri, Wan Nazwanie Wan Abdullah, Noorfatimah Yahaya
Data was collected over the range of 2θ from 10 to 80°.
The sulfur reduction after oxidation with TBHP and H2O2 followed by DMF as solvent extraction are presented in Table 2.
Oxidant Sulfur removal (%) Th DBT 4,6-DMDBT TBHP 85 79 68 H2O2 84 78 68 Sulfur reduction between TBHP and H2O2 indicates no significant difference, but TBHP was selected as a good oxidant in the next process because of its high oxidizability in the Cat-ODS process and good dissolving ability of TBHP in diesel oil.
Online since: August 2021
Authors: Claus H. Ruescher, Jadambaa Temuujin, Damdinsuren Munkhtuvshin
The attrition mill also gives the particle size reduction effect without heavy distortion of the microstructure.
Reduction of the fly ash's particle size with the appearance of a new glassy surface is the main reason for beneficial pozzolanic reaction in the mechanically activated fly ash containing concrete. 3.
The anionic and cationic dyes' equilibrium data were fitted well to the Friendlich model (R2 > 0.6 and R2 > 0.99).
Online since: May 2021
Authors: Waluyo Adi Siswanto, Supriyono Supriyono, Wijianto Wijianto, Tri Widodo Besar Riyadi, Noor Rahmad Tri Hermawan
The real speed of the driving motor is reduced by a reduction of the pulley with a ratio of 1:3.
It can be said that the second test produces more size reduction than the first test due to the increase of impact energy and longer time milling.
The findings are consistent, and the data are taken from different water content.
Showing 27461 to 27470 of 40461 items