Results 71 to 80 of about 245,968 (334)

Computational fluid dynamics study of yield power law drilling fluid flow through smooth-walled fractures

Journal of Petroleum Exploration and Production Technology, 2019
Presence of natural fractures in sub-surface makes an oil well drilling operation very challenging. As one of the major functions of drilling mud is to maintain bottomhole pressure inside a wellbore to avoid any invasion of unwanted high-pressure influx (
Faysal Ahammad, Shahriar Mahmud, Sheikh Zahidul Islam   +2 more
doaj   +1 more source

Lyapunov Exponents of Two Stochastic Lorenz 63 Systems [PDF]

, 2019
Two different types of perturbations of the Lorenz 63 dynamical system for Rayleigh-Benard convection by multiplicative noise -- called stochastic advection by Lie transport (SALT) noise and fluctuation-dissipation (FD) noise -- are found to produce ...
Geurts, Bernard J., Holm, Darryl D., Luesink, Erwin   +2 more
core   +3 more sources

EMT‐associated bias in the Parsortix® system observed with pancreatic cancer cell lines

Molecular Oncology, EarlyView.
The Parsortix® system was tested for CTC enrichment using pancreatic cancer cell lines with different EMT phenotypes. Spike‐in experiments showed lower recovery of mesenchymal‐like cells. This was confirmed with an EMT‐inducible breast cancer cell line.
Nele Vandenbussche, Renske Imschoot, Béatrice Lintermans, Lode Denolf, Joachim Taminau, Charlotte Fieuws, Geert Berx, Kris Gevaert, Kathleen B. M. Claes   +8 more
wiley   +1 more source

Design optimization of a coal seam annular air reverse circulation bit

Energy Science & Engineering, 2023
Reverse circulation (RC) drilling technology enables the rapid acquisition of coal seam samples, which is crucial in accurately measuring gas content. In addition, the design of the drill bit plays a key role in RC sampling. In this study, the turbulence
Demin Chen, Baohua Qu, Wei Long, Yanyan Li   +3 more
doaj   +1 more source

Granular circulation in a cylindrical pan: simulations of reversing radial and tangential flows

, 2006
Granular flows due to simultaneous vertical and horizontal excitations of a flat-bottomed cylindrical pan are investigated using event-driven molecular dynamics simulations.
B. D. Lubachevsky, D. Bideau, H. El hor, John J. Drozd, M. D. Shattuck, O. R. Walton, Oleh Baran, Peter H. Poole, Robert J. Martinuzzi   +8 more
core   +1 more source

Dynamics of the solar tachocline I: an incompressible study [PDF]

, 2001
Gough & McIntyre have suggested that the dynamics of the solar tachocline are dominated by the advection-diffusion balance between the differential rotation, a large-scale primordial field and baroclinicly driven meridional motions.
Acheson, Basu, Brown, Brun, Cally, Charbonneau, Charbonneau, Dikpati, Dormy, Dormy, Elliott, Ferraro, Garaud, Garaud, Gilman, Gough, Gough, Gough, Gough, Gough, Howe, Kleeorin, MacGregor, Mestel, Mestel, Nakagawa, P. Garaud, Proudman, Proudman, Rüdiger, Schou, Spiegel, Stewartson, Taylor   +33 more
core   +3 more sources

Comprehensive profiling of lncRNAs and mRNAs enriched in small extracellular vesicles for early noninvasive detection of colorectal cancer: diagnostic panel assembly and extensive validation

Molecular Oncology, EarlyView.
Small extracellular vesicles are a promising source of diagnostic molecules. We conducted a comprehensive study, including transcriptome profiling and RT‐qPCR validation on large cohorts of samples. Diagnostic panels enabling sensitive detection of colorectal cancer and precancerous lesions were established. Some molecules were differentially expressed
Petra Vychytilova‐Faltejskova, Marketa Pavlikova, Lucie Pifkova, Robin Jugas, Tana Machackova, Lenka Radova, Milana Sachlova, Renata Bartosova, Tetiana Samoilenko, Zuzana Feckova, Jana Orlickova, Erika Slamova, Elleni Ponechal Michu, Dagmar Al Tukmachi, Michaela Ruckova, Martina Vodinska, Jan Kotoucek, Tina Catela Ivkovic, Marie Boudna, Lucia Bohovicova, Teodor Stanek, Jana Halamkova, Martin Svoboda, Vladimir Prochazka, Tomas Grolich, Zdenek Kala, Ondrej Slaby   +26 more
wiley   +1 more source

Optimization of Meridional Flow Channel Design of Pump Impeller

International Journal of Rotating Machinery, 2004
The meridional flow channel design of a pump impeller affects its performance. However, since so many design parameters exist, a new design method is proposed in which a meridional and blade-to-blade flow channel is designed by the parallel use of the ...
Sunao Miyauchi, Hironori Horiguchi, Jun-ichirou Fukutomi, Akihiro Takahashi   +3 more
doaj   +1 more source

Numerical study on thermal-hydraulics of external reactor vessel cooling in high-power reactor using MARS-KS1.5 code: CFD-aided estimation of natural circulation flow rate

Nuclear Engineering and Technology, 2022
This paper presents a numerical investigation of two-phase natural circulation flows established when external reactor vessel cooling is applied to a severe accident of the APR1400 reactor for the in-vessel retention of the core melt.
Min Seop Song, Il Woong Park, Eung Soo Kim, Yeon-Gun Lee   +3 more
doaj   +1 more source

Climate dynamics and fluid mechanics: Natural variability and related uncertainties

, 2010
The purpose of this review-and-research paper is twofold: (i) to review the role played in climate dynamics by fluid-dynamical models; and (ii) to contribute to the understanding and reduction of the uncertainties in future climate-change projections. To
Allen, Andronov, Anishchenko, Anishchenko, Anishchenko, Arnold, Arnold, Arnold, Arnold, Arnol’d, Bak, Bak, Berger, Berloff, Bouchet, Caraballo, Cessi, Chang, Chang, Charney, Coayla-Teran, Cong, Cong, Crauel, Da Costa, Denjoy, Dijkstra, Dijkstra, Dijkstra, Duan, Duan, Dubar, Eckmann, Eric Simonnet, Farrel, Feigenbaum, Feliks, Feliks, Ghil, Ghil, Ghil, Ghil, Gill, Grebogi, Guckenheimer, Guckenheimer, Held, Hillerbrand, Jiang, Jiang, Jin, Jin, Jung, Kaijser, Katok, Katsman, Kloeden, Kondrashov, Kravtsov, Kuksin, Kuznetsov, Langa, Li, Lin, Lin, Lin, Lorenz, Madden, Mañé, McWilliams, Meacham, Michael Ghil, Mickaël D. Chekroun, Mitchell, Moron, Nadiga, Neelin, Newhouse, Oseledets, Palis, Palmer, Pedlosky, Pedlosky, Peixoto, Plaut, Poincaré, Pope, Primeau, Robbin, Robert, Robinson, Saunders, Sell, Sheremet, Simonnet, Simonnet, Simonnet, Simonnet, Simonnet, Simonnet, Sinai, Smale, Smale, Speich, Stainforth, Stommel, Sushama, Sverdrup, Trefethen, Tziperman, Tziperman, Williams, Wunsch, Zmarrou   +113 more
core   +1 more source