Results 121 to 130 of about 27,633 (264)

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Los fractales y el diseño en las construcciones [PDF]

, 2012
En las décadas más recientes, la geometría fractal se ha sumado a la geometría clásica de Euclides de Alejandría, siendo considerada por arquitectos de todo el mundo en sus propuestas y creaciones.En este trabajo se busca establecer una relación entre la
Iturriaga, Rufino, Jovanovich, Carina
core   +1 more source

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

Deep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source

Lo continuo y lo fractal. El cambio social en el Caribe [PDF]

, 2014
Como es bien conocido, la invasióneuropea en el Caribe trajo consigo laesclavitud africana al continente americano.Inicialmente, en la región caribeña, peropoco tiempo después en todo el continenteamericano.
Carrillo Torea, Guadalupe Isabel, Carrillo Torea, Guadalupe Isabel   +1 more
core  

Environmental heterogeneity and spatial variation mediates plant diversity and ecosystem stability in mountain ecosystems of the Mediterranean Andes

Ecography, EarlyView.
Globally, mountains are highly diverse ecosystems that serve as natural laboratories for testing ecological theories, while providing vital ecosystem services. Their biodiversity arises from the interaction between elevational gradients and topographic complexity, which generate strong variation in environmental conditions across short spatial scales ...
Laura C. Pérez‐Giraldo, José M. Cerda‐ Paredes, Dylan Craven, Javier Lopatin   +3 more
wiley   +1 more source

Diseño y caracterización de sistemas farmacéuticos elaborados por impresión en 3D (II) [PDF]

, 2018
El concepto de fractales, uno de los grandes desarrollos en la comunidad científica durante el siglo pasado, ha sido destinado a explicar la presencia de objetos o fenómenos que, debido a su irregularidad, no habían podido ser estudiados previamente.
Jiménez Romero, María Inmaculada
core  

Stretch Tunable Active Frequency Selective Fabric for Dynamically Switchable Bandstop and Transparency

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This stretchable active frequency selective fabric achieves reversible switching between bandstop and transparent states through strain‐induced reconfiguration of its conductive network. Its zero‐power and mechanically tunable characteristics offer potential for wearable electromagnetic functional materials.
Hao Feng, Zhenjia Zhou, Hongling Liu, Yong Wang, Fuwang Guan, Ni Wang, Weidong Yu   +6 more
wiley   +1 more source

Analysis of Impact Crushing Characteristics of Steel Fiber Reinforced Recycled Aggregate Concrete Based on Fractal Theory

Fractal and Fractional
The fractal theory can effectively describe the complexity and multi-scale of concrete under impact load and provide a scientific basis for evaluating concrete’s impact resistance.
Xianggang Zhang, Yanan Zhu, Junbo Wang, Gaoqiang Zhou, Yajun Huang   +4 more
doaj   +1 more source

Altered neurostructural development in magnetic resonance imaging‐negative pediatric epilepsy: A large‐scale multicenter study of 1919 children

Epilepsia, EarlyView.
Abstract Objective Addressing the poorly understood impact of pediatric epilepsy on neurodevelopment, this large‐scale study delineates age‐ and sex‐stratified neurostructural trajectories in magnetic resonance imaging (MRI)‐negative pediatric epilepsy to identify periods of maximal developmental divergence from healthy controls.
Yingfan Wang, Minghao Li, Huijun Li, Wei Yu, Peilin Jiang, Xinyi Zhou, Ke Hu, Feng Yang, Jiu Chen, Ming Yang, Xiaoshan Wang   +10 more
wiley   +1 more source

Análisis entrópico y fractal de la distribución espacial de la sismicidad en un sector de Cuba occidental y su relación con el régimen tectónico de la Falla Pinar

Boletín de Ciencias de la Tierra
El objetivo principal de este trabajo es la caracterización de la actividad sísmica vinculada a la Falla Pinar en la región de Cuba Occidental, mediante el empleo de métodos matemáticos que permitan caracterizar y/o cuantificar la relación espacio ...
Marcos Enrique Pazo-Arango
doaj   +1 more source