Results 81 to 90 of about 285,228 (311)

On the Friction and Wear Mechanisms of Electrified Steel Contacts in CO2: Unveiling the Role of Carbon‐Rich Tribofilms Under Dry Sliding Conditions

Advanced Materials Interfaces, EarlyView.
This study investigates friction and wear of AISI 52100 steel under dry sliding in CO2, air, and N2 atmospheres, with and without contact electrification. CO2 forms a stable carbon‐rich tribofilm that reduces friction by ∼30% and wear by ∼85%. High‐resolution TEM, EELS, and molecular dynamics reveal pressure‐dependent lubrication mechanisms, showing ...
Julio A. Cao‐Romero‐Gallegos, Seungjoo Lee, Cagatay Yelkarasi, Leonardo I. Farfan‐Cabrera, Ryuichi Okamoto, Hitoshi Washizu, Ali Erdemir   +6 more
wiley   +1 more source

Optimising the biopiling of weathered hydrocarbons within a risk management framework. [PDF]

, 2005
Thirty years of research into petroleum microbiology and bioremediation have bypassed an important observation – that many hydrocarbon contaminated sites posing potential risks to human health harbour weathered, ‘mid-distillate’ or heavy oils rather ...
Lethbridge, Gordon, Jacobsen, Christian, Paton, Graeme I., Daly, Paddy, Crossley, Jane, Semple, Kirk T., Jackman, Simon J., Sinke, Anja, Brassington, Kirsty J., Risdon, Graeme C., Hough, Rupert L., Pollard, Simon J. T.   +11 more
core  

Liquid Metal‐Based Stretchable Strain Sensor for Fruit Growth Monitoring

Advanced Materials Technologies, EarlyView.
Schematic overview of the fruit growth sensor development workflow, including sensor fabrication by injection molding, electromechanical and environmental characterization, mechanical stability testing, electronic readout integration, and outdoor field validation for monitoring of fruit growth under practical orchard conditions.
Asad Ullah, Lennert Purnal, Maximilian Krack, Sander Vijgen, Thijs Vandenryt, Dieter Reenaers, Ronald Thoelen, Wim Deferme   +7 more
wiley   +1 more source

Some Vegetable Oil‐Based Additives for Petroleum Industry: A Review of Sunflower, Rapeseed and Used Cooking Oil‐Derived Surfactants

Engineering Reports
The increasing environmental concerns associated with conventional petroleum‐based additives—such as high toxicity, poor biodegradability, and long‐term ecological persistence—have driven the development of more sustainable alternatives.
Roland Nagy, Gábor Zoltán Nagy, Ditta Adrienn Gerbovits   +2 more
doaj   +1 more source

Imaging fluid/solid interactions in hydrocarbon reservoir rocks

, 1993
The environmental scanning electron microscope (ESEM) has been used to image liquid hydrocarbons in sandstones and oil shales. Additionally, the fluid sensitivity of selected clay minerals in hydrocarbon reservoirs was assessed via three case studies ...
Mackinnon I.D.R., Julian C. Baker, Baker J.C., Uwins, P. J. R., Mackinnon, Ian D. R., Baker, J. C., Uwins P.J.R., Ian D. R. Mackinnon, Philippa J. R. Uwins   +8 more
core   +1 more source

Morphology‐Driven Electromechanical Performance of Graphene‐Based Electrofluids for Emerging Soft Electronic Systems

Advanced Materials Technologies, EarlyView.
Here, two types of electronic components are presented: a strain sensor and a stable resistor. Electrofluids properties are tuned to match these behaviors by selecting the type of filler. We show that the morphology of the filler together with its oxygen content are the key parameters to create electrical and mechanical networks with distinct responses.
Dominik S. Schmidt, Paolo Fortugno, Claudia‐F. López‐Cámara, Hartmut Wiggers, Lola González‐García   +4 more
wiley   +1 more source

Biocompatible Gadolinium Oxide Nanoparticles Incorporated Doxorubicin Enables Magnetic Resonance and Photoacoustic Dual Imaging for Cancer Theranostics

Nanomaterials
The engineering of theranostic nanoparticles, which integrate diagnostics and therapy in a single administration, enables targeted drug delivery and disease visualization.
Xingchen Wang, Yuta Imai, Yu Kimura, Risako Miura, Hirohiko Imai, Teruyuki Kondo   +5 more
doaj   +1 more source

Magnetic Droplet Manipulation on Open Surfaces

Advanced Materials Technologies, EarlyView.
Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley   +1 more source

Tubular Carbonate Concretions from North Island, New Zealand: Evidence for Hydrocarbon Migration and the Subsurface Plumbing System of Cold Seeps

, 2009
Among the cold seep research community, it is now appreciated that tubular carbonate concretions are important indicators of hydrocarbon migration in the subsurface.
Nyman, Stephanie Leigh
core  

Photolithographic Patterning of Colloidal Quantum Dots Enabled by Plasma‐Induced Ligand Polymerization

Advanced Materials Technologies, EarlyView.
Plasma‐induced ligand polymerization on colloidal quantum dots (QDs) renders them resistant to organic solvents, enabling conventional photoresist‐based photolithography. This approach achieves microscale patterning with feature sizes down to 3 µm, preserving the optical properties of the QDs and offering a simple and scalable route for QD‐based ...
Boram Kim, Jaehyeon Kim, Heeyeop Chae
wiley   +1 more source