Results 51 to 60 of about 4,037,959 (405)

Fractal Prediction of Grouting Volume for Treating Karst Caverns along a Shield Tunneling Alignment

Applied Sciences, 2017
Karst geology is common in China, and buried karst formations are widely distributed in Guangdong province. In the process of shield tunneling, the abundant water resources present in karst caverns could lead to the potential for high water ingress, and ...
Wen-Chieh Cheng, Qing-Long Cui, Jack Shui-Long Shen, Arul Arulrajah, Da-Jun Yuan   +4 more
doaj   +1 more source

Estimation of VS30 using shallow depth time-averaged shear wave velocity of Rawalpindi–Islamabad, Pakistan

Geomatics, Natural Hazards & Risk, 2023
The time-averaged shear wave velocity of top 30 m (VS30) is the most commonly used parameter to classify a site and evaluate its amplification characteristics for the seismic design.
Muhammad Bilal Adeel, Zubair Ahmed Nizamani, Muhammad Aaqib, Sarfraz Khan, Jawad Ur Rehman, Bikram Bhusal, Duhee Park   +6 more
doaj   +1 more source

Geology prediction based on operation data of TBM: comparison between deep neural network and statistical learning methods [PDF]

2019 1st International Conference on Industrial Artificial Intelligence (IAI), 2018
Tunnel boring machine (TBM) is a complex engineering system widely used for tunnel construction. In view of the complicated construction environments, it is necessary to predict geology conditions prior to excavation. In recent years, massive operation data of TBM has been recorded, and mining these data can provide important references and useful ...
arxiv   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Les « Éducations à » et les sciences de la nature : entre dédisciplinarisation et redisciplinarisation

Éducation et Socialisation, 2014
In France, “educations for” has recently gained ground inside curricula, leading us to rethink the aims and operation of disciplinary lessons. We choose to focus on science disciplines (biology, geology and physics), by considering their approaches as a ...
Denise Orange Ravachol
doaj   +1 more source

Structural Insights Into Aluminum‐Doped Manganese Dioxides as Promising Materials for Direct Lithium Extraction: Modeling and Mechanism Study

Advanced Materials Interfaces, EarlyView.
A two‐stage sorption mechanism is proposed for Al‐doped HMnO in direct lithium extraction. Batch sorption experiments and modeling identify two key sorption sites on Al‐HMnO: surface sites (planar and edge) and vacancy sites (W). At pH 12, Stage I involves surface ion exchange, followed by Stage II, where surface complexation occurs between Li⁺ ions ...
Shuxuan Yan, Shaozhen Pei, Xiaodong Li, Zhongyan Luo, Xiangping Chen, Małgorzata Szlachta, Junhua Xu   +6 more
wiley   +1 more source

Argumentation on tasks of Biology and Geology Portuguese textbooks [PDF]

Investigações em Ensino de Ciências, 2012
Argumentation is a transversal dimension to the process of constructing scientific knowledge, which is recognized as increasingly important. The Portuguese official curricula, such as the syllabus of the subject of biology and geology, from secondary ...
Paulo Almeida, Orlando Figueiredo, Cecília Galvão   +2 more
doaj  

Rocks Really Rock: electronic field trips via Web Google Earth can generate positive impacts in attitudes toward Earth sciences in middle- and high-school students [PDF]

Geoscience Communication
Earth sciences (ESs) are relevant to society and its relationship with the Earth system. However, ES education in K-12 environments in the United States faces several challenges, including limited exposure to ESs, lack of awareness of ES careers, and low
C. Ortiz-Guerrero, J. Loizzo
doaj   +1 more source

Introduction

Études Britanniques Contemporaines, 2023
This issue of Études britanniques contemporaines emanates from contributions to a workshop of the Société d’Études Anglaises Contemporaines (SEAC) at the 2022 conference of the Société des Anglicistes de l’Enseignement Supérieur in Clermont-Ferrand.
Vanessa Guignery
doaj   +1 more source

Spin‐Orbit Photonics with Potato Starch Lenses

Advanced Optical Materials, EarlyView.
Native potato starch spherulites are introduced as volumetric optical elements that modulate both dynamic and geometric phases of light. These spherulites focus light and generate optical vortices via spin‐orbit interaction, functioning as polarization‐sensitive microlenses. Their unique radial anisotropy enables applications in vortex beam generation,
Petr Bouchal, Petr Viewegh, Petr Liška, Radim Chmelík, Zdeněk Bouchal   +4 more
wiley   +1 more source