Pages
- 1
- 2
- document
-
Martins, Tiago A.E. (author), Muñoz Sierra, Julian (author), Nieuwlands, Jo A. (author), Lousada Ferreira, M. (author), Amaral, Leonor (author)The ecotoxicological safety of the water bodies relies on the reduction of micropollutant emissions from wastewater treatment plants (WWTP). The ecotoxicological safety of the water bodies relies on the reduction of micropollutant emissions from wastewater treatment plants (WWTP). Quantification of micropollutant removal at full-scale WWTP is...journal article 2024
- document
-
Ding, Z. (author), Brouwer, J.C. (author), Yao, Xiyu (author), Zhu, Jia-Ning (author), Hermans, M.J.M. (author), Popovich, V. (author), Sloof, W.G. (author)Boron doped MoSi<sub>2</sub> particles have been envisioned as sacrificial particles for self-healing thermal barrier coatings (TBCs) but their oxidation behaviour is yet not well understood. In this work, oxidation of MoSi<sub>2</sub> based particle is studied in the temperature range of 1050–1200 °C. The oxidation proceeds from a transient...journal article 2024
- document
-
Ding, Z. (author), Brouwer, J.C. (author), Zhu, Jia-Ning (author), Popovich, V. (author), Hermans, M.J.M. (author), Sloof, W.G. (author)Boron containing MoSi<sub>2</sub> is a promising material for applications at high temperature, but the oxidation mechanism is still unclear. In this work, the high temperature (1100 °C) oxidation of B doped MoSi<sub>2</sub> in synthetic air has been investigated. A (boro)silicate layer is formed on the surface of the alloy, which features a...journal article 2023
- document
-
Aghaeian, S. (author), Brouwer, J.C. (author), Sloof, W.G. (author), Mol, J.M.C. (author), Bottger, A.J. (author)Since the oxidation reactions in the process of steel production occur in harsh conditions (i.e., high temperatures and gas atmospheres), it is practically impossible to observe in situ the compositional changes in the steel and the formed oxide scale. Hence, a coupled thermodynamic-kinetic numerical model is developed that predicts the...journal article 2023
- document
-
Abraham Mathews, J. (author), Farahani, H. (author), Sietsma, J. (author), Petrov, R.H. (author), Mecozzi, M.G. (author), Santofimia, Maria Jesus (author)The influence of carbon concentration variations on pearlite formation (20 h at 600 °C) in a case-carburized steel is investigated. The resultant microstructure shows three distinct regions: carburized case, a transition region, and the original core. The microstructural transition from the case to the core regions is observed to be...journal article 2023
- document
-
Aghaeian, S. (author), Sloof, W.G. (author), Mol, J.M.C. (author), Bottger, A.J. (author)High-temperature oxidation of steels can be relatively fast when exposed to air. Consequently, elucidating the effect of different parameters on the oxidation mechanism and kinetics is challenging. In this study, short-time oxidation was investigated to determine the oxidation mechanism, the affecting parameters, and the linear-to-parabolic...journal article 2022
- document
-
Marin, Nicoleta Mirela (author), Stanculescu, I.R. (author)The purpose of the research consists of: i) development of a new specific adsorption method for two anesthetic drugs, procainamide (PHA) and lidocaine (LID) from aqueous solutions on Amberlite XAD7HP polyester resin and ii) obtaining a high-performance new material, PHA respectively LID loaded resin, for As(V), Cd(II) and Pb(II) metallic ions...journal article 2022
- document
-
Polat, S. (author), Eral, H.B. (author)Recent surge in reports describing new additives that inhibiting the growth and nucleation of calcium oxalate (CaOx), the most common component of renal calculi or kidney stones, have rekindled interest in CaOx crystallization. In this in vitro study, the effect of hyaluronic acid (HA), a protein commonly found in urine, on the morphology and...journal article 2021
- document
-
Meinders, Evy (author), Booij, Marjolein J. (author), van den Noort, Josien C. (author), Harlaar, J. (author)Background: Walking speed is a confounding factor in biomechanical analyses of gait, but still many studies compare gait biomechanics at comfortable walking speed (CWS) that is likely to differ between groups or conditions. To identify gait deviation unrelated to walking speed, methods are needed to correct biomechanical data over the gait...journal article 2021
- document
-
Ravi, A.M. (author), Navarro Lopez, A. (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)Bainite formation in steels typically starts at austenite grain boundaries and continues through nucleation of bainite at newly formed bainitic ferrite/austenite interfaces. Recent experimental evidence has pointed out that austenite to bainite transformation can also proceed in the presence of martensite. Studies suggest that the presence of...journal article 2020
- document
-
Ravi, A.M. (author), Kumar, A. (author), Herbig, Michael (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)The rate of bainite formation depends on several factors such as austenite grain size, decomposition of austenite into other phases and austenite composition. Although studies have been carried out to understand various factors affecting bainite formation, open lines of investigation still remain. In this work, the effect of ferrite formation...journal article 2020
- document
-
Ravi, A.M. (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)Low temperature bainite formation in high-carbon steels leads to highly refined microstructures. However, the rate of bainite formation becomes impractically low as the bainite formation temperature decreases. Thus, it is important to create strategies to accelerate the low-temperature bainite formation kinetics in high-carbon steels. In this...journal article 2020
- document
-
Sainis, Salil (author), Farahani, H. (author), Gamsjäger, Ernst (author), van der Zwaag, S. (author)Direct microscopic observation of the isothermal bainite evolution in terms of nucleation events, the location of the nuclei, as well as their growth is very valuable for the refinement of models predicting the kinetics of bainite transformation. To this aim, the microstructural evolution in a Fe-0.2C-1.5Mn-2.0Cr alloy during isothermal...journal article 2018
- document
-
Mao, W. (author), Ma, Yao (author), Sloof, W.G. (author)A multi-element and multi-phase internal oxidation model that couples thermodynamics with kinetics is developed to predict the internal oxidation behaviour of Fe–Mn–Cr steels as a function of annealing time and oxygen partial pressure. To validate the simulation results, selected Fe–Mn–Cr steels were annealed at 950 °C for 1–16 h in a gas...journal article 2018
- document
-
Chen, Z. (author), Dang, Jie (author), Hu, Xiaojun (author), Yan, Hongyan (author)Hydrogen has received much attention in the development of direct reduction of iron ores because hydrogen metallurgy is one of the effective methods to reduce CO<sub>2</sub> emission in the iron and steel industry. In this study, the kinetic mechanism of reduction of hematite particles was studied in a hydrogen atmosphere. The phases and...journal article 2018
- document
-
da Fonte Lameiras, F. (author), Ras, C. (author), ten Pierick, A. (author), Heijnen, J.J. (author), van Gulik, W.M. (author)In its natural environment, the filamentous fungus Aspergillus niger grows on decaying fruits and plant material, thereby enzymatically degrading the lignocellulosic constituents (lignin, cellulose, hemicellulose, and pectin) into a mixture of mono- and oligosaccharides. To investigate the kinetics and stoichiometry of growth of this fungus...journal article 2017
- document
-
Ravi, A.M. (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)Over the years, a quantitative theory to explain bainite formation kinetics has been proposed based on the nucleation kinetics of bainitic sub-units. Although the theory shows acceptable correlation with experimental results, it is observed that the kinetic models show a certain degree of discrepancy with actual kinetics. It is identified...journal article 2017
- document
-
Thallam Thattai, A. (author), van Biert, L. (author), Aravind, P.V. (author)Major operating challenges remain to safely operate methane fuelled solid oxide fuel cells due to undesirable temperature gradients across the porous anode and carbon deposition. This article presents an experimental study on methane steam reforming (MSR) global kinetics for single operating SOFCs with Ni-GDC (gadolinium doped ceria) anodes...journal article 2017
- document
-
Ebrahimi, K.H. (author), Hagedoorn, P.L. (author), Jongejan, J.A. (author), Hagen, W.R. (author)The hollow sphere-shaped 24-meric ferritin can store large amounts of iron as a ferrihydrite-like mineral core. In all subunits of homomeric ferritins and in catalytically active subunits of heteromeric ferritins a diiron binding site is found that is commonly addressed as the ferroxidase center (FC). The FC is involved in the catalytic Fe(II)...journal article 2009
- document
-
Golombok, M. (author), Ineke, E. (author), Luzardo, J.C.R. (author), He, Y.Y. (author), Zitha, P. (author)We analyse the kinetics of CO2 and methane hydrate formation. The characteristic formation times are associated with different steps of the formation process. Conditions for minimising these rate times are identified while maintaining a regime where CO2 hydrate is formed and methane remains predominantly gaseous. This involves a rapid...journal article 2008
Pages
- 1
- 2