Results 111 to 120 of about 9,313 (263)

Large Deformation Mechanism and Support Countermeasures of Deep-Buried Soft Rock Tunnels Under High Geostress State

Buildings
To address the problem of large deformation in deep-buried high geostress soft rock tunnels, the Yuelongmen Tunnel was selected as the research subject and adopting the methods of on-site measurements, laboratory experiments and theories, the ...
Luhai Chen, Baoping Xi, Na Zhao, Shuixin He, Yunsheng Dong, Keliu Liu, Pengli Gao, Guoqiang Liu   +7 more
doaj   +1 more source

Deformation Control Technology for Surrounding Rock in Soft Rock Roadways of Deep Kilometer-Scale Mining Wells

Symmetry
Deep soft rock roadways at about 1 km depth experience significant deformation due to concentrated stress ahead of the working face and dynamic loads from the hard roof layer. We propose an integrated control method that couples directional roof cutting, which interrupts stress transfer with constant resistance, and large deformation cable ...
Li Jiang, Haipeng Li, Lei Ma, Weiming Guan, Haosen Wang, Haochen Feng, Bei Zhang, Rui Wang 0152   +7 more
openaire   +1 more source

Valorization of Post‐Consumer Waste From Metallized Flexible Packaging and Industrial EPM Waste: Development of Sustainable Composites

Journal of Applied Polymer Science, EarlyView.
Post‐consumer metallized flexible packaging waste and industrial EPM waste are transformed into sustainable composites through mechanical recycling. The incorporation of 30 wt% EPM provides the most favorable balance between stiffness, ductility, and impact resistance, achieving 53.36 kJ/m2.
Tiago O. Oliveira, Samara L. Santos, Ruth M. C. Santana   +2 more
wiley   +1 more source

Morphological and morphometric aspects of the equine aortic valve: New insights for comparative studies in mammals

The Anatomical Record, EarlyView.
Abstract New data on the equine aortic valve obtained using advanced techniques is especially important given the greater availability of animal models for translational research. Here we characterized the morphological and morphometric aspects of the equine aortic valve from 60 healthy hearts collected at equine abattoirs.
Vitor Pires Pereira, Victoria Brondani de Oliveira, Carlos Eduardo Seyfert, Luciano de Morais‐Pinto   +3 more
wiley   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

The Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen, Ivo Jacobs, Kristina Kverková, Lona Lalić, Alexandra Polonyiová, Patrik Stehlík, Stephan A. Reber, Mathias Osvath   +7 more
wiley   +1 more source

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

New techniques for old bones: Morphometric and diffeomorphometric analysis of the bony labyrinth of the Reilingen and Ehringsdorf Neandertals

The Anatomical Record, EarlyView.
Abstract Neandertals are known to possess very distinctive traits in their bony labyrinth morphology, such as an inferiorly positioned posterior canal and a very low number of turns in the cochlea. Hence, the inner ear has been often used to assess the Neandertal status of fragmentary fossils.
Alessandro Urciuoli, Julia Diez‐Valero, Ignacio Martínez, Rolf Quam, Brian A. Keeling, Nicole M. Webb, Mercedes Conde‐Valverde   +6 more
wiley   +1 more source

The coelurosaur theropods of the Romualdo formation, early Cretaceous (Aptian) of Brazil: Santanaraptor placidus meets Mirischia asymmetrica

The Anatomical Record, EarlyView.
Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt, Orlando Nelson Grillo, Christophe Hendrickx, Maximilian Kellermann, Max Cardoso Langer   +4 more
wiley   +1 more source

Mechanical manifestation characteristics and damage evolution law of unloading perturbation damage in surrounding rock of deep roadways

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Aiming at the problems of stress concentration, large deformation and serious damage in surrounding rock of deep roadways under excavation unloading disturbance conditions, the micro and macro mechanical properties and damage patterns of deep rock ...
Xinfeng Wang, Tian Jiang, Chuanqi Zhu, Youyu Wei, Yunhui Jiang   +4 more
doaj   +1 more source

Research on Deformation Law of Surrounding Rock During Excavation of Tunnel [PDF]

Proceedings of the 2015 International Conference on Electromechanical Control Technology and Transportation, 2015
Yunping Wang, Deshen Zhao
openaire   +1 more source