Kinetic, isotherm and mechanism in paraquat removal by adsorption process using corn cob biochar produced from different pyrolysis conditions

Autor: Chi Toan Nguyen, Dondej Tungtakanpoung, Van Tung Tra, Puangrat Kajitvichyanukul

Publikováno v: Case Studies in Chemical and Environmental Engineering, Vol 6, Iss , Pp 100248- (2022)

This work studied the isotherm, kinetic and mechanism of Paraquat adsorption in aqueous solution by using corn cob biochar produced from different pyrolysis temperatures and times. The kinetic and isotherm data was fitted by the Pseudo-second-order a

Externí odkaz: https://doaj.org/article/7c8ef92c20714e17adc0de8123e1a0f5

The effect of cold work on the transformation kinetics and texture of a zirconium alloy during fast thermal cycling

Autor: João Quinta da Fonseca, Michael Preuss, Antoine Ambard, Javier Romero, Chi Toan Nguyen

Publikováno v: Nguyen, C T, Romero, J, Ambard, A, Preuss, M & Quinta da Fonseca, J 2019, ' The effect of cold work on the transformation kinetics and texture of a zirconium alloy during fast thermal cycling ', Materials Science and Engineering A, vol. 746, pp. 424-433 . https://doi.org/10.1016/j.msea.2019.01.047

The effect of cold-work on the transformation kinetics and texture evolution after fast temperature cycling were studied in a dilute zirconium alloy. It was found that cold-work delays the onset of phase transformation and helps randomise the texture

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24fbdbbf7d346c0ccb8e314a902d3fac
https://doi.org/10.1016/j.msea.2019.01.047

Cold Creep of Titanium: Analysis of Stress Relaxation Using Synchrotron Diffraction and Crystal Plasticity Simulations

Autor: Yi Xiong, Christopher M. Magazzeni, Angus J. Wilkinson, Phani Karamched, Chi-Toan Nguyen, Edmund Tarleton

Publikováno v: SSRN Electronic Journal.

It is well known that titanium and some titanium alloys creep at ambient temperature, resulting in a significant fatigue life reduction when a stress dwell is included in the fatigue cycle. It is thought that localised time dependent plasticity in 's

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67baf986e166cbc23feb1ae2a9e788bc
https://doi.org/10.2139/ssrn.3558273

Texture Evolution Under Fast Heating and Cooling Rates of Zirconium Alloys Studied In-Situ by Synchrotron X-Ray Diffraction

Autor: João Quinta da Fonseca, Chi-Toan Nguyen, Antoine Ambard, Alistair Garner, Javier Romero, Michael Preuss

Publikováno v: SSRN Electronic Journal.

In-situ synchrotron x-ray diffraction (SXRD) was used to study the texture evolution of a recrystallized (RX) Nb-containing Zr-alloy and a cold-worked (CW) Nb-free Zr-alloy under fast β-thermal cycles, which are characteristic of loss-of-coolant acc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d84e42e3b53f0b084f7a33ff89a3f6a
https://doi.org/10.2139/ssrn.3680386

Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals

Autor: D. Esqué-de los Ojos, J. Quinta da Fonseca, Chi-Toan Nguyen, G. Timár, Alberto Orozco-Caballero

Publikováno v: Esque-De Los Ojos, D, Nguyen, C-T, Orozco-Caballero, A, Timar, G & Quinta da Fonseca, J 2018, ' Back-stresses and geometrical hardening as competing mechanisms enhancing ductility in HCP metals ', Materials Science and Engineering A: Structural Materials: Properties, Microstructures and Processing . https://doi.org/10.1016/j.msea.2018.05.046

By recourse of computational mechanics, back-stresses are unveiled as a major source for the increase in work hardening during forming of hexagonal close-packaged (hcp) metals. Polycrystalline visco-plastic self-consistent (VPSC) and crystal plastici

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12d53e7c4162124c6125f85bda9c266a
http://hdl.handle.net/10773/36842