The Effect of Temperature and Asphaltene Content on the Lubricating Properties of Fuel Oils

Autor: Trinity Thobejane, Philip L. de Vaal

Publikováno v: Lubricants, Vol 11, Iss 4, p 162 (2023)

During coal-based power generation, fuel oil is used to assist with ignition of pulverised coal. Fuel oil passes through several pieces of equipment on its way to the burner section of the boiler. In this article the focus is on the lubricity behavio

Externí odkaz: https://doaj.org/article/f44f9c43a70b44a3b57a0e2e394f071c

Seismic characterization of switching platform geometries and dominant carbonate producers (Miocene, Las Negras, Spain)

Autor: John J. G. Reijmer, Eveline L. de Vaal, Koos de Jong, Lucas M. Kleipool

Publikováno v: Kleipool, L M, De Jong, K, De Vaal, E & Reijmer, J J G 2017, ' Seismic characterization of switching platform geometries and dominant carbonate producers (Miocene, Las Negras, Spain) ', Sedimentology, vol. 64, no. 6, pp. 1676–1707 . https://doi.org/10.1111/sed.12369
Sedimentology, 64(6). Wiley-Blackwell

The primary goals of seismic interpretation and quantification are to understand and define reservoir architecture and the distribution of petrophysical properties. Since seismic interpretation is associated with major uncertainties, outcrop analogue

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::005268b97fab5e2ec2763e88b8561364
https://doi.org/10.1111/sed.12369

Alkyl ammonium intercalation of Mozambican bentonite

Autor: Pedro Horacio Massinga, Walter Wilhelm Focke, Maria T. Atanasova, Phillip L. De Vaal

Publikováno v: Applied Clay Science. 49:142-148

Financial support for this research from the Institutional Research Development Programme (IRDP) and the South Africa/Mozambique Collaboration Programme of the National Research Foundation (NRF) is gratefully acknowledged.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c5fa27340d79f7a543f08b89c7b5c86
https://doi.org/10.1016/j.clay.2010.04.017

Control of a batch pulp digester using a simplified mechanistic model to predict degree of polymerisation

Autor: Carl Sandrock, Philip L. de Vaal

Publikováno v: Computers & Chemical Engineering. 31:1222-1230

Effective control of the sulphite pulp digestion process in the production of dissolved pulp in a batch digester is limited by three important restrictions, namely: • the inability to measure the degree of polymerisation (DP) of the cellulose in th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b9fc12979b410fb9b4f953ddb9f9ed4
https://doi.org/10.1016/j.compchemeng.2006.10.015

A generic framework for stochastic dynamic simulation of chemical engineering systems using free/open source software

Autor: Philip L. de Vaal, Carl Sandrock

Chemical engineering process modelling and simulation pose significant challenges to the computer program developer. Chemical processes are invariably described by non-linear equations such as chemical reaction kinetics, flow-pressure relationships a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c3ffe6639d229937abf282cd32a492d2
https://doi.org/10.1016/b978-0-444-53711-9.50030-4