Results 61 to 70 of about 75,364 (297)

Nonequilibrium Phase Transitions in a Driven Sandpile Model [PDF]

, 1994
We construct a driven sandpile slope model and study it by numerical simulations in one dimension. The model is specified by a threshold slope $\sigma_c\/$, a parameter $\alpha\/$, governing the local current-slope relation (beyond threshold), and $j_ ...
Dhar S K, Ligget T M, R Pandit, S K Dhar, S Ramaswamy, Schmittmann B   +5 more
core   +2 more sources

3D‐Printed Serial Snap‐Through Architectures for Programmable Mechanical Response

Advanced Engineering Materials, EarlyView.
A serial snap‐through architecture is realized using compact 3D‐printed von Mises truss units arranged in a staged cascade. Their geometry and boundary conditions program multistage mechanical responses with plateaux and re‐hardening regimes. An inverted‐compliance model predicts these behaviors and enables analytical design of programmable force ...
Filipe A. Santos
wiley   +1 more source

Virtual parameter calibration of pod pepper seeds based on discrete element simulation

Heliyon
In order to achieve numerical optimization of the pod pepper seed sowing device, the contact parameters of pod pepper seeds were calibrated, with the angle of repose used as the response value.
Xingye Chen, Xinzhong Wang, Jing Bai, Weiquan Fang, Tianyu Hong, Nan Zang, Gaoliang Wang   +6 more
doaj   +1 more source

Effect of clay content on the shear strength of clay–sand mixture

International Journal of Geo-Engineering, 2018
This paper investigates the effect of clay content on the shear strength of clay–sand mixtures. Bentonite and Jumunjin sand were mixed to prepare clay–sand mixtures with varying clay contents of 5, 10, 15, 20, 25 and 30%.
Donghwi Kim, Boo Hyun Nam, Heejung Youn
doaj   +1 more source

Angle of repose

The American Journal of Emergency Medicine
Citation: 'angle of repose' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.15152 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +3 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Possible Stratification Mechanism in Granular Mixtures

, 1998
We propose a mechanism to explain what occurs when a mixture of grains of different sizes and different shapes (i.e. different repose angles) is poured into a quasi-two-dimensional cell.
H. A. Makse, H. Eugene Stanley, H. M. Jaeger, Hernán A. Makse, J. A. C. Gallas, J. C. Williams, J.-P. Bouchaud, P.-G. de Gennes, Pierre Cizeau, R. A. Bagnold, R. L. Brown, T. Boutreux   +11 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Physical characterization of coffee after roasting and grinding

Semina: Ciências Agrárias, 2014
Flowability is an important characteristic of handling process for efficiency and reliability purpose of post-harvest operations, which are governed by the physical properties of the product.
Gabriel Henrique Horta de Oliveira , Paulo Cesar Corrêa , Fábio Lúcio Santos , Wander Luiz Vasconcelos o Santos , Carlito Calil Júnior , Fernanda Machado Baptestini , Guillermo Asdrúbal Vargas-Elías   +6 more
doaj   +1 more source

Packing Fractions and Maximum Angles of Stability of Granular Materials

, 2004
In two-dimensional rotating drum experiments, we find two separate influences of the packing fraction of a granular heap on its stability. For a fixed grain shape, the stability increases with packing fraction.
D. Bideau, J. Duran, J. Luo, J. Olson, J. R. L. Allen, M. Priester, O. Reynolds, R. J. Zieve, R. L. Brown, S. Chopra   +9 more
core   +1 more source