Results 81 to 90 of about 18,231 (303)

Stress Propagation and Arching in Static Sandpiles

, 1996
We present a new approach to the modelling of stress propagation in static granular media, focussing on the conical sandpile constructed from a point source.
Cates, M. E., Claudin, P., Wittmer, J. P.   +2 more
core   +4 more sources

Road construction over voids caused by active gypsum dissolution, with an example from Ripon, North Yorkshire, England [PDF]

, 2005
Sudden subsidence problems, caused by gypsum karst developed in the Permian sequence of Northern England, have caused difficult conditions for road construction.
Cooper, Anthony H., Jones, Colin J.F.P.
core   +1 more source

Breaking Down Lignin: A Macromolecule's Path to the Nanoscale

Advanced Energy and Sustainability Research, EarlyView.
This section highlights lignin's critical role as a sustainable, multifunctional precursor for nanomaterial design. Its unique structure and abundance enable the creation of lignin‐based, lignin‐derived, and hybrid nanomaterials with tunable properties. Emphasis is placed on lignin's potential to drive innovation in nanotechnology, offering ecofriendly
Jelena Papan Djaniš, Jan Hočevar, Griša Grigorij Prinčič, Jernej Iskra   +3 more
wiley   +1 more source

Movement of Overlying Strata and Mechanical Responses of Shallow Buried Gas Pipelines in Coal Mining Areas

Applied Sciences
Damage to buried gas pipelines caused by mining activities has been frequently reported. Based on a case study from the Central China coal mining area, this research employs a scaled model experiment to investigate the movement of overlying strata in a ...
Jiashu Han, Zhanguo Ma, Junyu Sun, Peng Gong, Pengfei Yan, Chuanchuan Cai, Mingshuo Xu, Tianqi She   +7 more
doaj   +1 more source

Stress-strain behavior and geometrical properties of packings of elongated particles [PDF]

, 2010
We present a numerical analysis of the effect of particle elongation on the quasistatic behavior of sheared granular media by means of the Contact Dynamics method. The particle shapes are rounded-cap rectangles characterized by their elongation.
A. Mirghasemi, A. Pena, B. Cambou, D. Taylor, D. Wood, Emilien Azéma, F. Radjai, F. Radjai, F. Radjaï, F. Radjaï, Farhang Radjaï, J. J. Moreau, J. Mitchell, J. Moreau, J. Moreau, L. Landau, L. Rothenburg, M. Jean, M. Satake, P. Vermeer, P. Vermeer, R. Folk   +21 more
core   +3 more sources

A Female‐Locust‐Inspired Hybrid Soft‐Stiff Robotic Digger: Mimetics and Implications for Digging Efficiency

Advanced Intelligent Systems, EarlyView.
Female desert locusts dig underground to lay their eggs. They displace soil, rather than removing it, to create a tunnel. We analyze burrowing dynamics and 3D kinematics and design a locust‐inspired hybrid soft–stiff robot that reproduces this mechanism. The results show the natural strategy minimizes energy, whereas alternative patterns raise costs up
Shai Sonnenreich, Amir Ayali, Bat‐El Pinchasik   +2 more
wiley   +1 more source

Active Earth Pressure against Rigid Retaining Walls for Finite Soils in Sloping Condition considering Shear Stress and Soil Arching Effect

Advances in Civil Engineering, 2020
The horizontal differential layer element method was used to study the active earth pressure of the finite-width soil formed by the rigid retaining wall for the embankment or adjacent foundation pits.
Weidong Hu, Kangxing Liu, Xinnian Zhu, Xiaolong Tong, Xiyu Zhou   +4 more
doaj   +1 more source

Jamming transition in a two-dimensional open granular pile with rolling resistance

, 2014
We present a molecular dynamics study of the jamming/unjamming transition in two-dimensional granular piles with open boundaries. The grains are modeled by viscoelastic forces, Coulomb friction and resistance to rolling.
Atman, Allbens P. F., Combe, Gaël, Magalhães, Caio F. M., Moreira, José G.   +3 more
core   +4 more sources

Navigating an STI diagnosis: The role of social support, intergenerational learning, and transformative growth among Black women

American Journal of Community Psychology, EarlyView.
Abstract Black women face a myriad of challenges that heighten their susceptibility to sexually transmitted infections (STIs), resulting in a disproportionate impact of STIs among this population. Yet, there is a lack of research that explores how women navigate these diagnoses with resilience.
Jaleah D. Rutledge, Jasmine Abrams, Ijeoma Opara, Robin Lin Miller   +3 more
wiley   +1 more source

Isostatic phase transition and instability in stiff granular materials

, 1998
In this letter, structural rigidity concepts are used to understand the origin of instabilities in granular aggregates. It is shown that: a) The contact network of a noncohesive granular aggregate becomes exactly isostatic in the limit of large stiffness-
A. Coniglio, B. Miller, C. Liu, C. Moukarzel, C. Moukarzel, Cristian F. Moukarzel, E. Guyon, F. Radjai, H. M. Jaeger, Henry Crapo, J. Hemmingsson, M. Ammi, M. Nicodemi, P. Claudin, P. Claudin, P. Dantu, P. Dantu, S. N. Coppersmith, S. Ouaguenouni, S. Ouaguenouni, S. Roux, T. S. Tay   +21 more
core   +1 more source