Article
Mechanics
Y. T. Li, N. Guo, Z. X. Yang, J. D. Zhao
Summary: This paper presents a numerical study on the behavior of suspensions of non-Brownian grains in a Couette flow. The results show that both the inertia and the grain shape affect the interactions between grains and the fluid, contributing to the overall shear stress and rheology of the suspension. The study also reveals the presence of grain layering near the boundary walls, which becomes more pronounced with higher solid concentration and inertia, and increased non-circularity in grain shape. The correlation between suspension viscosity and grain microstructure and kinematics is also investigated.
Article
Microbiology
Rajesh P. Ringe, Philippe Colin, Gabriel Ozorowski, Joel D. Allen, Anila Yasmeen, Gemma E. Seabright, Jeong Hyun Lee, Aleksandar Antanasijevic, Kimmo Rantalainen, Thomas Ketas, John P. Moore, Andrew B. Ward, Max Crispin, P. J. Klasse
Summary: The study reveals that the neutralizing antibodies against HIV-1 have different effects on different fusion peptide epitopes, which are associated with persistent fractions. By conducting pseudovirus depletion experiments and analyzing the structure of soluble trimers, it is found that glycosylation variation may be the cause of the differences in binding and neutralization effects.
Article
Geochemistry & Geophysics
Jean-Louis Vigneresse, Benedicte Cenki
Summary: The text discusses the significance of partial melting and melt extraction in numerical thermo-mechanical models. It reveals that the behavior of melt extraction is similar to stick-slip motion in dry friction, and is influenced by multiple parameters.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Economics
Walter Paternesi Meloni, Davide Romaniello, Antonella Stirati
Summary: This study empirically evaluates the interpretation that long-term unemployment causes hysteresis by increasing the NAIRU. Our findings show a strong association between total and long-term unemployment rates, indicating macroeconomic reversibility. However, we do not find evidence of accelerating inflation after episodes of strong decline in long-term unemployment, challenging the notion of NAIRU as an inflationary barrier.
ECONOMIC MODELLING
(2022)
Letter
Mechanics
Junwei Guo, Qi Zhou, Ron Chik-Kwong Wong
Summary: The study employed lattice Boltzmann and discrete element methods to investigate the rheological properties of oblate spheroid suspensions in a Newtonian fluid, finding that an increase in particle aspect ratio led to higher relative viscosity and more particle contacts and contact distance. In denser suspensions, the more oblate particles were observed to systematically reorient under shear flow. The viscosity data was recast using the Krieger-Dougherty formula, with modified Einstein coefficients reported.
Article
Astronomy & Astrophysics
Yi-Xian Chen, Douglas N. C. Lin
Summary: Accretion discs around supermassive black holes not only power active galactic nuclei (AGNs), but also host single and binary embedded stellar-mass black holes (EBHs) that grow rapidly from gas accretion. The merger of these EBHs provides a promising mechanism for the excitation of some gravitational wave events observed by LIGO-Virgo, especially those with source masses considerably larger than isolated stellar-mass black hole binaries.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Physics, Applied
Qin Lou, Yu Yan, Hongtao Xu
Summary: This study investigates the rising of bubbles in porous media using a lattice Boltzmann model. The effects of various factors on bubble deformation, rising velocity, residual bubble mass, perimeter, and number of breakups are studied. The results show that higher Eotvos numbers lead to easier bubble breakage and larger bubble perimeters, and the difference between bubble dynamics in in-line and staggered porous media decreases as Eotvos number increases.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Mathematics
Vladimir Shelukhin
Summary: This study tackles the suspension issues of particles in any shape by developing the thermodynamics of a Cosserat continuum. The research finds that the anisotropy of the suspensions is determined by including the micro-inertia tensor in the rheological constitutive equations. The mathematical model can predict gradient banding, temporal volatility of apparent viscosity, and hysteresis of the flux-pressure curve.
Article
Materials Science, Multidisciplinary
Clement Perrinet, Edwin-Joffrey Courtial, Arthur Colly, Christophe Marquette, Rene Fulchiron
Summary: A new method has been developed in this study to increase the yield stress of a liquid by preparing suspensions of easily 3D-printable hydrogel particles and removing the suspended phase after manufacturing using the thermo-reversibility of hydrogel behavior to reduce final rigidity. This approach is reported to be more efficient than a previous method based on emulsion formulations.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Gastroenterology & Hepatology
Simon Butikofer, Daniela Lenggenhager, Pedro D. Wendel Garcia, Ewerton M. Maggio, Martina Haberecker, Cacilia S. Reiner, Gregor Brullmann, Philipp K. Buehler, Christoph Gubler, Beat Mullhaupt, Christoph Jungst, Bernhard Morell
Summary: This study sheds light on the occurrence of cholestatic liver injury and secondary sclerosing cholangitis (SSC) in critically ill COVID-19 patients, with a particular focus on clinical, serological, radiological, and histopathological findings. The development of SSC is found to be a significant complication in critically ill COVID-19 patients, associated with considerable morbidity and mortality, and needs to be considered in diagnostic work up for prolonged cholestasis.
LIVER INTERNATIONAL
(2021)
Article
Chemistry, Physical
Andrea Scagliarini, Ignacio Pagonabarraga
Summary: This study investigates the sedimentation process in active suspensions and reveals the influence of dynamic correlations among particles on the non-equilibrium steady state. The researchers also provide evidence of non-local effects induced by solvent hydrodynamics and discuss the emergence of height-dependent polar order in the system.
Article
Multidisciplinary Sciences
Yang Liu, Kun Liu, Wentao Wang, Linlin Fan, Binbin Li, Tao Yang
Summary: Inherent magnetism is an important property of ferromagnetic materials. This study investigated the internal magnetic field intensity (IMFI) and internal magneto-mechanical effect (IMME) of Q390B in a structural field to detect and verify the presence of inherent magnetism. The IMFI test used magnetic flux to detect the change in magnetic field, while the IMME test implemented a novel instrument to measure magnetic variation without magnetic flux. Based on low frequency cyclic (LFC) tensile loading tests, the inherent magnetism was fully described. Experimental results indicate that IMME shows great potential and efficiency for studying inherent magnetism and can be promoted in the future.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Applied
Jing Liu, Minhuan Wang, Wanxian Cai, Rui Cai, Yantao Shi, Jiming Bian
Summary: There are two methods for preparing perovskite solar cells (PSCs): one-step and two-step processes. Both methods can achieve high-performance PSCs, but the photovoltaic parameters vary. By analyzing factors such as crystalline growth mode, optical properties, defect types, and carrier transport mechanisms, the key factors for producing high-performance PSCs can be identified.
APPLIED PHYSICS LETTERS
(2022)
Article
Mechanics
Zhi-Qiang Dong, Lian-Ping Wang, Cheng Peng, Tao Chen
Summary: This study focuses on the application of bounce-back schemes in the lattice Boltzmann method (LBM). It explores the potential errors associated with the reconstruction of unknown distribution functions at boundary nodes using bounce-back schemes. The study demonstrates the importance of relaxation parameters in collision models in determining the magnitude of these errors and proposes an optimal setting to suppress or eliminate most of the undesirable effects. Numerical benchmark studies confirm the effectiveness of the proposed theoretical analysis in improving simulation results.
Article
Mechanics
Xiao Hu, Xinyu Li, Peifeng Lin, Zuchao Zhu
Summary: The inertial migration of differently shaped rectangular particles and elliptical particles in a channel flow and the self-organization of single-line particle trains are studied. The effects of particle shape, particle aspect ratio (alpha), Reynolds number (Re), blockage ratio (k), and particle concentration (phi) on self-organizing single-line particle trains are explored. It is found that circular particle trains have a more pronounced dynamic process than rectangular and elliptical particle train, and the inclination of height (IH) is the main reason for the dynamic formation of a single-line particle train. The rectangular particle trains always have a larger IH and smaller interparticle spacing than the elliptical particle trains when the train is just formed.
Article
Physics, Applied
Cesar Palma, Robert Deegan
APPLIED PHYSICS LETTERS
(2015)
Article
Physics, Multidisciplinary
S. Weiss, R. D. Deegan
Article
Mechanics
Xiyu Du, R. D. Deegan
JOURNAL OF FLUID MECHANICS
(2015)
Article
Mechanics
G. Agbaglah, M. -J Thoraval, S. T. Thoroddsen, L. V. Zhang, K. Fezzaa, R. D. Deegan
JOURNAL OF FLUID MECHANICS
(2015)
Article
Chemistry, Multidisciplinary
Cesar Palma, Robert D. Deegan
Article
Physics, Multidisciplinary
Claudio Falcon, Jake Bruggemann, Matteo Pasquali, Robert D. Deegan
Article
Mechanics
L. V. Zhang, J. Toole, K. Fezzaa, R. D. Deegan
JOURNAL OF FLUID MECHANICS
(2012)
Article
Mechanics
L. V. Zhang, J. Toole, K. Fezzaa, R. D. Deegan
JOURNAL OF FLUID MECHANICS
(2012)
Article
Mechanics
G. Agbaglah, R. D. Deegan
JOURNAL OF FLUID MECHANICS
(2014)
Article
Multidisciplinary Sciences
Robert D. Deegan
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2012)
Article
Mechanics
R. D. Deegan
JOURNAL OF FLUID MECHANICS
(2020)
Article
Computer Science, Interdisciplinary Applications
Silas Alben, Alex A. Gorodetsky, Donghak Kim, Robert D. Deegan
JOURNAL OF COMPUTATIONAL PHYSICS
(2019)
Article
Physics, Multidisciplinary
Ido Levin, Robert Deegan, Eran Sharon
PHYSICAL REVIEW LETTERS
(2020)
Review
Physics, Fluids & Plasmas
Stephan Weiss, Robert D. Deegan