Results 91 to 100 of about 1,860,676 (309)

Development and characterization of a surfactant responsive to redox conditions for gas recovery in foam drainage

Scientific Reports
To address the challenge of reusing foaming agents in foam drainage gas production processes, we developed a redox-responsive surfactant with a straightforward preparation method based on molecular electrostatic interaction assembly.
Jia Li, Ming Wen, Zeyin Jiang, Long Xian, Jiawen Liu, Juan Chen   +5 more
doaj   +1 more source

On-Line Measurement Method for Rheology of Straight Tubular Oil-Based Drilling Fluid Under Pulsating Flow

IEEE Access
With the rapid development of drilling automation, how to automate real-time online measure drilling fluid rheology accurately has become one of the problems that the industry urgently wants to solve.
Xueqiang Wang, Yilin Chen, Wen Zhang, Ji Zhang, Yin Lei, Dongxu Tu, Hang Lu, Ke Yan, Guoyong Xia, Haosen Yuan, Han Zhang, Yu Xu   +11 more
doaj   +1 more source

Smallholder oil palm value chain in Cameroon: A case study from the department of Sanaga-Maritime [PDF]

, 2014
Cameroon has been producing palm oil for centuries but industrial scale production started around 1907 under the German colonisation with the development of estates and mills around the Littoral region (Sanaga-Maritime).
Abdelhakim, Tahani, Aboubakar Hayatou, Iyabano, Feintrenie, Laurène, Miaro, Ludovic   +3 more
core  

Electric-field induced capillary interaction of charged particles at a polar interface

, 2004
We study the electric-field induced capillary interaction of charged particles at a polar interface. The algebraic tails of the electrostatic pressure of each charge results in a deformation of the interface $u\sim \rho ^{-4}$.
Alois Würger, F. H. Stillinger, Jr., Lionel Foret, M. Megens, M. Takeo, M. S. Turner, R. Aveyard, V. I. Marchenko   +7 more
core   +4 more sources

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Fingering to fracturing transition in a transient gel

, 2013
Fracture processes are ubiquitous in soft materials, even in complex fluids, subjected to stresses. To investigate these processes in a simple geometry, we use a model self-assembled transient gel and study the instability patterns obtained in a radial ...
Foyart, Guillaume, Ligoure, Christian, Mora, Serge, Ramos, Laurence   +3 more
core   +3 more sources

Biomimetic Iridescent Skin: Robust Prototissues Spontaneously Assembled from Photonic Protocells

Advanced Functional Materials, EarlyView.
Uniform nanoparticles are induced to form arrays (photonic crystals) in the cores of biopolymer capsules, endowing these ‘protocells’ with structural color. These protocells are then assembled into large self‐standing objects, i.e., prototissues, with robust mechanical properties as well as iridescent optical properties.
Medha Rath, Briahnah Streeter, Satyam Srivastava, Jemma Wood, William E. Bentley, Taylor J. Woehl, Srinivasa R. Raghavan   +6 more
wiley   +1 more source

Spiral Slip Structural Design for Ultra-Small Diameter Dissolvable Bridge Plug in Hydraulic Fracturing of Casing Deformation Wells

Shiyou jixie
As shale gas exploration and development in the Sichuan Basin progressively advances into deeper formations， the formation temperature and pressure become higher， the horizontal sections grow longer， and the operational pressures increase significantly ...
Yu Chenggang, Yang Jian, Fu Yukun, Wang Kang, Jiang Jie, Shi Changshuai, Mei Lei   +6 more
doaj   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

Advanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz, Jonas De Breuck, Sahar Salehi, Meike N. Leiske   +3 more
wiley   +1 more source

Numerical Simulation Study on Optimization of Multiparameter Combination for Horizontal Well Fracturing in Nonhomogeneous Conglomerate Reservoirs

Geofluids
Optimizing multicluster fracturing designs in heterogeneous conglomerate reservoirs is critical due to their complex characteristics. This study employs the continuous–discontinuous element method (CDEM) to conduct engineering-scale 3D simulations using ...
Zehao Xu, Haiyang Zhao, Xiangjun Liu, Xiong Zhang, Pandeng Luo, Lixi Liang   +5 more
doaj   +1 more source