Article
Chemistry, Analytical
Martial Tazifor Tchantcho, Egon Zimmermann, Johan Alexander Huisman, Markus Dick, Achim Mester, Stefan van Waasen, Giovanni Betta
Summary: The article presents a temperature drift correction method for electromagnetic induction (EMI) systems using two low-pass filters to account for delayed thermal variations. Experimental results show that this method effectively reduces the influence of temperature drift and improves measurement accuracy.
Article
Geochemistry & Geophysics
Shiwen Li, Yabin Li, Junhao Guo, Decheng Hong, Zhuwen Wang, Aihua Weng
Summary: The Earth's interior contains a range of multiscale structures, including mantle plumes which connect the core-mantle boundary to the Earth's surface. Reconstructing these plumes using electromagnetic induction methods can provide insights into mantle dynamics and Earth's long-term evolution. Numerical reconstruction using the geomagnetic depth sounding (GDS) method shows that it is possible to reconstruct the broad plume heads near the mantle transition zone with certain limitations for the deeper parts.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Review
Environmental Sciences
Sashini Pathirana, Sebastien Lambot, Manokarajah Krishnapillai, Mumtaz Cheema, Christina Smeaton, Lakshman Galagedara
Summary: Information on the spatiotemporal variability of soil properties and states within the agricultural landscape is crucial for precision agriculture. Ground-penetrating radar (GPR) and electromagnetic induction (EMI) techniques have been used to assess soil characteristics and their variability. GPR provides high-resolution measurements and is commonly used for estimating soil water content, while EMI has broader applications such as estimating soil salinity and bulk density. However, integrating these two techniques presents challenges, and future advancements should focus on overcoming the limitations of each technique and enhancing their applications to support precision agriculture.
Article
Chemistry, Multidisciplinary
Ramon Wagner Torres Pena, Pedro Andres Chira Oliva, Fernando Araujo Abrunhosa
Summary: This study evaluated the application of Ground Penetrating Radar and Electromagnetic Induction geophysical tools combined with sedimentology for describing the subsurface of sites for freshwater fish farming. The tools performed well in evaluating the terrain suitability for aquaculture ponds and can provide important information about local soil characteristics, ensuring the sustainability of aquaculture operations while minimizing environmental impacts and maximizing economic returns.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Analytical
Dorijan Spikic, Matija Svraka, Darko Vasic
Summary: This paper introduces the use of high-frequency electromagnetic induction sensors in soil sensing and discusses the relationship between sensor geometry, shielding, and coupling mechanisms. It evaluates the effectiveness of a typical sensor and its shielding through theoretical and experimental analysis, and proposes a method for evaluation.
Article
Engineering, Electrical & Electronic
Zhangtao Wang, Shaoping Wang, Xingjian Wang, Xuesong Luo
Summary: A permanent magnet-based flow velocity meter that measures velocity based on electrode output current instead of output voltage is proposed. Experimental results show that the sensor has lower output drift and higher measurement accuracy.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Soil Science
Fernando Visconti, Jose Miguel De Paz
Summary: A semi-empirical model was developed to predict soil EMI measurements from basic ground properties. Salinity, water content, clay, organic matter, bulk density, and temperature were used as predictors. The model was able to explain between 80% and 90% of the variance in EMI measurements in the validation. This model helps us understand how the basic soil properties contribute to the EMI measurements.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Thermodynamics
Oktay Yilmaz
Summary: Thorough understanding of design parameter implications is essential for promoting the deployment of small wind turbines (SWTs). In-depth research on the influence of design TSR on off-design wind speed performance of multi-blade SWTs is necessary. The study found that the greatest peak power coefficients were achieved around a design TSR of 4.
Article
Engineering, Electrical & Electronic
Chao Tan, Yixuan Chen, Yiran Wu, Zhili Xiao, Feng Dong
Summary: A portable, flexible, and extensible magnetic induction tomography (MIT) system with high-phase detection precision is proposed for imaging low-conductivity medium. Different modules in the system allow for flexibility in extending and meeting various applications, with sensor modules serving as both excitation and detection components.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Environmental Sciences
Anita Bernatek-Jakiel, Marta Kondracka
Summary: Studying soil pipes is a methodological challenge that requires improvement in detection methods. This study explores the use of electromagnetic induction (EMI) and electrical resistivity tomography (ERT) to identify soil pipes. The results show that ERT has better detection capabilities, while EMI is more sensitive to water content. It is important to integrate geophysical methods with field recognition for effective detection of soil pipes.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Environmental Sciences
Wenping Xie, Jingsong Yang, Rongjiang Yao, Xiangping Wang
Summary: The study focuses on the temporal variation and spatial distribution characteristics of soil salinity in the Yangtze River Estuary using geostatistics combined with electromagnetic induction survey method. The research developed regional soil salinity survey and mapping by coupling limited laboratory data with proximal sensed data obtained from EM and analyzed the variation of soil salinity in different hydrological years under the impoundment of the Three Gorges Reservoir.
Article
Materials Science, Multidisciplinary
Frantisek Herman, Richard Hlubina
Summary: The standard BCS-like theoretical descriptions do not account for pair-breaking processes, leading to a lack of quantitative explanation for the microwave response of type-II superconductors. However, the concept of Dynes superconductors, which considers pair-breaking scattering, provides a simple but complete description of the microwave response, particularly focusing on the unexpected properties of clean superconductors used as cavity materials.
Article
Geosciences, Multidisciplinary
Kim Madsen van't Veen, Ty Paul Andrew Ferre, Bo Vangso Iversen, Christen Duus Borgesen
Summary: This study provides a robust and efficient way to design electromagnetic induction (EMI) surveys using machine learning. By generating a large number of forward models and utilizing machine learning algorithms, the optimal EMI design for subsurface properties can be predicted. The ML-based approach aligns with traditional optimization methods and offers additional insights.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Article
Engineering, Manufacturing
Limeng Song, Yongqiang Chen, Qiancheng Gao, Zhe Li, Xinyue Zhang, Hailong Wang, Li Guan, Zhaoju Yu, Rui Zhang, Bingbing Fan
Summary: Lightweight aerogels composed of graphene/SiC nanosheets have been fabricated with low thermal conductivity and highly efficient electromagnetic wave (EMW) absorption. These aerogels show excellent EMW-absorbing performance, making them a promising material for high-performance EMW absorption and heat insulation in the aviation and aerospace fields.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Energy & Fuels
Chidiebere Charles Agoha, Tochukwu Innocent Mgbeojedo, Eze Martins Okoro, Francis Begianpuye Akiang, Chukwuebuka Nnamdi Onwubuariri, Latifa Shaheen Al-Naimi
Summary: Outcrop mapping and geophysical surveys helped to interpret the geology of Auchi and Igarra areas, distinguishing between basement and sedimentary rocks. The presence of different lithofacies and major rock groups were identified, along with delineation of basement-sedimentary boundaries.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)