Article
Astronomy & Astrophysics
Muxin Han, Hongguang Liu, Dongxue Qu
Summary: This paper analyzes the complex critical points in the four-dimensional Lorentzian Engle-Pereira-Rovelli-Livine spin foam model in the large-j regime. By taking into account the complex critical points, the large-j asymptotics are generalized to situations with non-Regge boundary data and are related to twisted geometry. A general procedure is presented to derive the effective theory of Regge geometries from the spin foam amplitude in the large-j regime using the complex critical points. The effective theory is then analyzed in detail for the spin foam amplitude on the double-Delta(3) simplicial complex. The numerical computation of the effective action and the solution of the effective equation of motion on the double-Delta 3 complex shows that the effective theory reproduces classical Regge gravity when the Barbero-Immirzi parameter gamma is small.
Article
Astronomy & Astrophysics
Muxin Han, Hongguang Liu, Dongxue Qu
Summary: In this paper, the complex critical points in the four-dimensional Lorentzian Engle-Pereira-RovelliLivine spinfoam model in the large-j regime are analyzed. The large-j asymptotics is generalized to include non-Regge boundary data and twisted geometry through the consideration of complex critical points in the four-simplex amplitude. A general procedure is presented to derive the effective theory of Regge geometries from the spinfoam amplitude in the large-j regime by utilizing the complex critical points for generic simplicial complexes. The effectiveness of the derived theory is demonstrated through numerical computations on the double-A3 simplicial complex.
Article
Mechanics
Esteban F. Medina-Banuelos, Benjamin M. Marin-Santibanez, Jose Perez-Gonzalez
Summary: The steady torsional parallel-plate flow of a viscoplastic microgel with apparent slip was analyzed using simultaneous rheometrical and particle image velocimetry (rheo-PIV) measurements. The velocity distributions of the microgel were found to be linear across the gap, except at the edge where non-linear flow occurred. The slip yield stress and slip velocity beyond this stress were calculated, and various methodologies were used to determine the yield stress of the microgel. The validity of the Mooney and Yoshimura and Prud'homme analyses in characterizing yield-stress fluids was confirmed.
JOURNAL OF RHEOLOGY
(2022)
Article
Multidisciplinary Sciences
Pei-Yu Chu, Han-Yu Hsieh, Pei-Shan Chung, Pai-We Wang, Ming-Chung Wu, Yin-Quan Chen, Jean-Chen Kuo, Yu-Jui Fan
Summary: The objective of this study is to develop a device that mimics the microfluidic system of human arterial blood vessels. The device combines fluid shear stress (FSS) and cyclic stretch (CS) resulting from blood flow and pressure. It enables real-time observation of dynamic morphological changes in cells under different flow fields and stretch. By understanding the effects of FSS and CS on endothelial cells (ECs), including alignment of cytoskeleton proteins with fluid flow and redistribution of paxillin, this study can contribute to the prevention and improvement of cardiovascular diseases.
Article
Engineering, Civil
Bo-Li Zhu, Jing-Zhong Tong, Jin-Xun Zhang, Yan-Lin Guo
Summary: This paper studies the shear-resistant capacity of the orthogonal double corrugated plate shear wall (ODCPSW) and proposes a strength design method. It transforms the ODCPSW into orthogonal plates and defines rigidity constants to investigate its behaviors. By fitting the elastic buckling coefficient, a formula for predicting the shear elastic buckling load is obtained. The normalized height-to-thickness ratio is then established as a key design parameter. The shear-resistant capacity of ODCPSWs is investigated through numerical examples, which shows that it can be considered as the superposition of two simply supported ODCPSWs and the moment-resistant frame formed by two edge members.
THIN-WALLED STRUCTURES
(2023)
Article
Biochemical Research Methods
Ian C. Harding, Nicholas R. O'Hare, Mark Vigliotti, Alex Caraballo, Claire Lee, Karina Millican, Ira M. Herman, Eno E. Ebong
Summary: The function of blood-brain barrier endothelial cells is influenced by flow conditions and supportive cells, necessitating the use of physiologically relevant multicellular models to investigate and understand their role.
Article
Engineering, Chemical
Vipin Michael, Mick Dawson, Robert Prosser, Adam Kowalski
Summary: The study investigated the viscoelastic pressure drop enhancement in real process fluids using experimental methods and computer simulations with a SMX+(TM) mixer. Comparisons were made against classical friction factor correlations for non-elastic fluids and literature correlations for elastic fluids. CFD predictions for pressure losses were consistent with measurements.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Mechanics
Patrick T. Corona, Kexin Dai, Matthew E. Helgeson, L. Gary Leal
Summary: Orientational closure approximations are important in theories for complex fluids with orientable microstructures, allowing for the direct calculation of moments of the orientation distribution function. In this study, the accuracy of various closure approximations was tested by comparing the fourth moment of the OPDF calculated directly and with the use of the second moment. The results showed that there is no single closure that outperforms others, but there are several closures that provide good approximations, regardless of their starting assumptions. Additionally, differences between closures were not reflected in rheological quantities derived from moments of the OPDF, highlighting the need for direct testing of closures.
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
(2023)
Article
Polymer Science
Hugo A. Castillo-Sanchez, Leandro F. de Souza, Antonio Castelo
Summary: In this study, complex rheological behavior is described using models implemented in the HiGTree/HiGFlow system. The models are successfully compared with two other methodologies, and the mesh convergence analysis shows the excellent performance of the HiGFlow software. Importantly, the implemented methodology reproduces rheological behavior of high interest in the rheology community.
Article
Engineering, Civil
Ran Deng, Jun-De Yang, Yu-Hang Wang, Qi-Qi Li, Zhou Yu, Qi-Wen Shen, Yang Yang
Summary: The double-corrugated steel plate (DCSP) is a new type of structural member with better stability and higher shear resistance than conventional single-corrugated steel plate (SCSP). This paper presents a study on the shear buckling and ultimate strength of DCSP. Theoretical studies, numerical simulations, and parameter analyses were conducted to determine the buckling strength and ultimate shear strength of DCSP.
Article
Construction & Building Technology
S. M. Ghodratian-Kashan, S. Maleki
Summary: In this research, the cyclic performance of double corrugated steel plate shear walls (DCSPSWs) was investigated experimentally and confirmed numerically. The results showed that, regardless of the infill plate design, the DCSPSWs exhibited good cyclic performance with a spindle-shaped hysteresis curve. However, the beam-only-connected DCSPSW showed slightly lower lateral load resistance.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2022)
Article
Construction & Building Technology
Jian Li, Zian Wang, Feng Li, Ben Mou, Teng Wang
Summary: The performance of steel plate-wrapped concrete shear walls was studied, including hysteresis behavior, stiffness degradation, bearing capacity degradation, energy dissipation, cyclic ductility, and shear lag behavior. The test results showed that specimens with wide flange exhibited higher bearing capacity and initial stiffness, while specimens with narrow flange had better cyclic ductility and energy dissipation capacity.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Chemistry, Applied
Koduvayur A. Ramya, Abhijit P. Deshpande
Summary: Oscillatory rheology is used to study the linear and nonlinear mechanical response of poly(vinyl alcohol) (PVA) based crosslinked systems. The study compares physically and chemically crosslinked PVA gels and demonstrates the quantitative differences in their responses. Three approaches for geometry correction in the parallel plate (PP) geometry are explored, and the third approach is found to be effective for medium strain amplitudes. The findings and guidelines provided in this study can be applied to analyze the nonlinear rheology of complex network systems.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2023)
Article
Optics
Haleh Ebrahimi, Arash Sabatyan
Summary: This paper presents a novel composite diffractive element that can generate a wide range of beam patterns and structures by redesigning the spiral zone plate and incorporating a complex sinusoidal grating. Additionally, this element functions as a multi-focusing component, enabling the creation of diverse optical arrays. Mathematical analysis, simulations, and experimental validation were conducted to support the research findings.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Physics, Multidisciplinary
Hui Xu, Xiaojing Wang, Zhiquan Chen, Xuelei Li, Longhui He, Yulan Dong, Guozheng Nie, Zhihui He
Summary: A simple optical tunable device, using a periodic grating-like structure with graphene and silicon, can achieve various optical functions through surface plasmon resonance. The device's induced transparency phenomenon is well-fitted by the coupled mode theory, providing a foundation for fast tunable function and integration. With a high group index and group delay, the device can serve as a good construction idea for slow light devices and provide theoretical help for optical tunable reflectors, absorbers, and slow light devices.
NEW JOURNAL OF PHYSICS
(2021)
Article
Chemistry, Physical
Frederico Macedo Fernandes Barros, Christophe Chassenieux, Taco Nicolai, Marli Miriam de Souza Lima, Lazhar Benyahia
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2019)
Article
Food Science & Technology
Anne-Flore Monnet, Camille Michon, Marie-Helene Jeuffroy, David Blumenthal
FOOD AND BIOPROCESS TECHNOLOGY
(2019)
Article
Chemistry, Applied
Anne-Flore Monnet, Alexandre Eurieult, Sophie Berland, Giana Almeida, Marie-Helene Jeuffroy, Camille Michon
Article
Chemistry, Physical
Frederico Macedo Fernandes Barros, Christophe Chassenieux, Marli Miriam de Souza Lima, Lazhar Benyahia
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Mechanics
G. Gillot, C. Derec, J. -M. Genevaux, L. Simon, L. Benyahia
Article
Chemistry, Physical
D. Huc-Mathis, G. Almeida, C. Michon
Summary: Pickering emulsions can be produced using raw particles obtained from uncracked vegetal food byproducts as sole stabilizers, with the non-purified ingredients contributing to the stability of the emulsions. Different byproducts displayed varying oil droplet sizes, with insoluble particles driving the size and protecting against coalescence, while soluble compounds adsorb at the interface and act as thickening agents. Overall, vegetal byproducts can stabilize clean-label emulsions effectively.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Food Science & Technology
A. F. Monnet, M. H. Jeuffroy, C. Villemejane, C. Michon
Summary: This study investigated the effects of replacing part of wheat flour with pea flour on cake properties. It was found that when 20% and 40% of wheat flour was substituted with pea flour, the resulting cakes had higher density but surprisingly softer texture due to differences in cell structure.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2021)
Article
Food Science & Technology
Laurena Masbernat, Sophie Berland, Giana Almeida, Camille Michon
Summary: A major issue in processing highly hydrated wheat doughs is the stability of the dough over time. The use of a two-step water addition and mixing process significantly slows down sedimentation kinetics, thus enhancing dough stability. Protein microstructure plays a role in stabilizing the dough, with the formation of a gluten network using 50% of water in the first step of the two-step process being crucial.
JOURNAL OF CEREAL SCIENCE
(2021)
Review
Food Science & Technology
Charlotte Floret, Anne-Flore Monnet, Valerie Micard, Stephane Walrand, Camille Michon
Summary: With the global population growing, it is important to balance the intake of animal and vegetable protein sources and limit overall protein resources. This article analyzes the protein concentration and essential amino acids of different protein sources to meet human needs. New classification indexes are proposed, considering the influence of protein gelation in food formulation, and improvements are suggested to fulfill human nutritional requirements.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2023)
Article
Mechanics
G. Gillot, L. Simon, J. -M. Genevaux, L. Benyahia
Summary: Acoustic events induced by water drop impact on a bath of water and sodium dodecyl sulfate (SDS) close to the irregular entrainment regime were studied. These events, corresponding to bubble vibration, are observed for several SDS concentrations, each with its own acoustic signature. The different hydrodynamic mechanisms responsible for these events were described in detail, highlighting their main features and linking them to the corresponding hydrodynamics.
Article
Food Science & Technology
A. F. Monnet, A. Saint-Eve, C. Michon, M. H. Jeuffroy, J. Delarue, D. Blumenthal
Summary: This study aims to manage the quality of pea-enriched cakes made from mixes of wheat and pea flours by adjusting processing parameters based on a multiobjective model. Results show that the model is able to correct variations in cake properties caused by variations in flour properties. In addition, a convergence between sensory and instrumental results was found in terms of structural and textural properties.
FOOD AND BIOPROCESS TECHNOLOGY
(2022)
Article
Engineering, Chemical
Laurena Masbernat, Sophie Berland, Cassandre Leverrier, Gabrielle Moulin, Camille Michon, Giana Almeida
Summary: The printability of food materials in extrusion printing is influenced by the rheology of the food under shearing and at rest post-deposition. The study on wheat-flour based materials revealed that the water/flour ratio played a crucial role in the structure and printability of the materials. Materials obtained by heating and shearing doughs with a moisture content above 55% (wb) were suitable for 3D extrusion printing and could form stable objects.
JOURNAL OF FOOD ENGINEERING
(2021)
Article
Mechanics
G. Gillot, J. -M. Genevaux, L. Simon, L. Benyahia
Summary: Adding a surfactant to water changes the outcome of water drop impacts and affects the resulting acoustic signal. The starting time of the acoustic events shows a maximum around one-third of the critical micellar concentration, which is related to the variation of Rayleigh jet maximum height.
Article
Chemistry, Physical
Lea Waldmann, Do-Nhu-Trang Nguyen, Stephane Arbault, Taco Nicolai, Lazhar Benyahia, Valerie Ravaine
Summary: This study investigates the influence of the bis-hydrophilic balance on the stability of emulsions formed by mixing incompatible polymers. It is found that emulsions stabilized by bis-hydrophilic soft microgels containing 50%wt of Dex exhibit the highest stability. The thermo-responsiveness of the microgels also affects the stability of the emulsions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Clement Drou, Theo Merland, Antoine Busseau, Sylvie Dabos-Seignon, Antoine Goujon, Pietrick Hudhomme, Lazhar Benyahia, Christophe Chassenieux, Stephanie Legoupy
Summary: A BPTI derivative with a terminal azido group on the expanded pi-conjugated backbone has been synthesized and used to obtain a promising multi-electron acceptor system. The compound shows self-assembly via pi-pi stacking interaction in solution and in the solid state, as demonstrated in the study.