Results 51 to 60 of about 533,861 (287)

Effects of hydrocarbon spills on the temperature and moisture regimes of Cryosols in the Ross Sea region [PDF]

, 2002
Hydrocarbon spills have occurred on Antarctic soils where fuel oils are utilized, moved or stored. We investigated the effects of hydrocarbon spills on soil temperature and moisture regimes by comparing the properties of existing oil contaminated sites ...
Aislabie, Jackie M., Balks, Megan R., Campbell, Iain B., Kimble, John M., Paetzold, Ron F.   +4 more
core   +2 more sources

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Intelligent path planning algorithms for UAVs: Classification, complexity analysis, hybrid ablation insights, and future directions

Advances in Mechanical Engineering
As unmanned aerial vehicle (UAV) technology has evolved, these systems are being increasingly utilized across diverse industries. However, controlling UAVs faces significant problems owing to several environmental circumstances and obstacles, making path
Dradoum Alaa, Khelassi Abdelmadjid, Lachekhab Fadhila   +2 more
doaj   +1 more source

Magnetic molecules created by hydrogenation of Polycyclic Aromatic Hydrocarbons

, 2009
Present routes to produce magnetic organic-based materials adopt a common strategy: the use of magnetic species (atoms, polyradicals, etc.) as building blocks.
A. Rajca, E. Louis, E. SanFabián, G. Chiappe, J. A. Pople, J. A. Vergés, J. Andzelm, L. Pastor-Abia   +7 more
core   +1 more source

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

Advanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller, Florian Kerber, Kirsten Moritz, Steffen Dudczig, Konstantin Kraushaar, Thomas Schemmel, Jana Hubálková, Patrick Gehre, Christos G. Aneziris   +8 more
wiley   +1 more source

Neural feedback linearization adaptive control for affine nonlinear systems based on neural network estimator [PDF]

Serbian Journal of Electrical Engineering, 2011
In this work, we introduce an adaptive neural network controller for a class of nonlinear systems. The approach uses two Radial Basis Functions, RBF networks.
Bahita Mohamed, Belarbi Khaled
doaj   +1 more source

A new empirical model for enhancing well log permeability prediction, using nonlinear regression method: Case study from Hassi-Berkine oil field reservoir – Algeria

Journal of King Saud University: Engineering Sciences, 2021
The reservoir permeability (K) factor is the key parameter for reservoir characterization. This parameter is considered as a determinant reservoir quality index.
H.E. Belhouchet, M.S. Benzagouta, A. Dobbi, A. Alquraishi, J. Duplay   +4 more
doaj   +1 more source

Solvent exposure and malignant lymphoma : a population-based case-control study in Germany [PDF]

, 2007
Aims: To analyze the relationship between exposure to chlorinated and aromatic organic solvents and malignant lymphoma in a multi-centre, population-based case-control study.
Baris, Fisher, Zeeb, Talamini, Pan, Chang, Purdue, Levi, McKenna, Hu, Adami, Dong, Boldeman, Cahill, McMichael, Cartwright, Nordstrom, Bentham, Smedby, Grant, Hu, Hughes, Grant, Becker, Mester, Nieters, Becker, Stein, Bolm-Audorff, Brandt, Hakansson, Langford, Freedman, Giovannucci, Polesel, Hickish, Vandewalle, Nowson, van der Wielen, Ullrich, Schwarz, Halliday, Phan, Tyrrell, Reeve, Byrne, Allanson, Poon, Ullrich, Peterseim, Armus, Wang, Holick   +52 more
core   +2 more sources

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

Elaboration and Characterization of the Mechanical Properties and Moisture Buffer Value of a Composite Based on Lime and Date Palm Petiole Fibre

Annals of West University of Timisoara: Physics, 2022
This study concerns a new ecological material, bio-sourced and with reduced environmental impact. The material in question is a composite made from date palm fibers and lime.
Gharbi Abderrezak, Zeddouri Aziez, Gherfi Abdelhafid, Bouchemaa Kamal   +3 more
doaj   +1 more source