Results 81 to 90 of about 776,308 (247)

Model‐Guided Design of Paper Membrane Architectures for Controlled Flow and Enhanced Diagnostic Sensitivity

open access: yesAdvanced Engineering Materials, EarlyView.
Geometrical modifications on nitrocellulose membranes can result in observable differences in signal intensity relative to a reference membrane (top and bottom left). Using two reference experiments, we have developed a theoretical model that can reproduce the experimentally observed flow changes and provide information on membrane parameters, e.g ...
Maria Dimaki   +2 more
wiley   +1 more source

Design and Construction of Experimental Device for Dynamic Wax Deposition Profile Evaluation

open access: yesShiyou jixie, 2017
In order to accurately predict the law of wax deposition in offshore highly deviated well and select an effective wax cleaning and prevention technology, based on the dynamic wax deposition mechanism and the advantages of existing wax deposition ...
Yang Wanyou   +3 more
doaj  

Pipeline wax deposition modeling: A sensitivity study on two commercial software

open access: yesPetroleum, 2019
This paper presents the results of a sensitivity study carried out to investigate the performances of two commercial codes, OLGA and LedaFlow, used to model the wax deposition process in pipelines under multiphase flow.
Giancarlo Giacchetta   +6 more
doaj   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

Architecture‐Driven Sensor Stability in Weft‐Knitted Engineering Textiles

open access: yesAdvanced Engineering Materials, EarlyView.
Textile‐integrated sensor architectures are systematically compared to evaluate their electromechanical behavior under combined mechanical and environmental loading. Pocket‐based integration exhibits stable and reproducible signals, whereas tunnel‐based routing shows higher sensitivity accompanied by increased variability.
Adnan Maroof Khan   +5 more
wiley   +1 more source

A model of wax deposition under oil-gas two-phase stratified flow in horizontal pipe

open access: yesOil & Gas Science and Technology, 2018
A model of wax deposition based on molecular diffusion mechanism, for oil-gas two-phase stratified pipe flow is developed. In the model, unidirectional fully developed flow analyses of momentum, heat and mass transfer are presented.
Duan Jimiao   +6 more
doaj   +1 more source

Occurrence and Characterization of Paraffin Wax Formed in Developing Wells and Pipelines

open access: yesEnergies, 2019
Deposition and precipitation of paraffin wax in pipelines are major problems in the production, transfer, storage, and processing of crude oil. To prevent complete clogging, it is necessary to minimize and remove deposited wax in pipelines and tubing ...
Marwa M. El-Dalatony   +6 more
doaj   +1 more source

Modelling of wax deposition in sub-sea pipelines [PDF]

open access: yes, 2016
A research report submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science in Engineering, 2016Wax deposition in sub ...
Bryan, Stephen Hugh
core  

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Wax Precipitation and Deposition Risk: Issues on Ethics and Professionalism

open access: yesNigerian Journal of Technological Development, 2022
The deposition of wax on pipelines causes problems that affect the oil production rate and the facilities. Several preventive and control measures were employed to manage this problem.
Nura Makwashi   +2 more
doaj  

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