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Multi-Band Scattering Characteristics of Miniature Masson Pine Canopy Based on Microwave Anechoic Chamber Measurement.
Sensors (Basel)
December 2024
Laboratory of Target Microwave Properties, Deqing Academy of Satellite Applications, Deqing 313200, China.
Using microwave remote sensing to invert forest parameters requires clear canopy scattering characteristics, which can be intuitively investigated through scattering measurements. However, there are very few ground-based measurements on forest branches, needles, and canopies. In this study, a quantitative analysis of the canopy branches, needles, and ground contribution of Masson pine scenes in C-, X-, and Ku-bands was conducted based on a microwave anechoic chamber measurement platform.
View Article and Find Full Text PDFTracking head movement inside an MR scanner using electromagnetic coils.
Heliyon
July 2024
Sir Peter Mansfield Imaging Centre, School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK.
Prospective motion corrections in brain imaging for MRI are fairly challenging. Monitoring involuntary head movement inside MR scanner is crucial for prospective motion correction. This initial study delves into utilizing simulations to track the head's movements within an MRI scanner, achieved by measuring induced voltage changes from time-varying magnetic field gradients in head-mounted coils.
View Article and Find Full Text PDFBilateral enhancement network with signal-to-noise ratio fusion for lightweight generalizable low-light image enhancement.
Sci Rep
November 2024
School of Computer Science and Technology, Henan Polytechnic University, Jiaozuo, 454003, China.
Low-light image enhancement aims to enhance the visibility and contrast of low-light images while eliminating complex degradation issues such as noise, artifacts, and color distortions. Most existing low-light image enhancement methods either focus on quality while neglecting computational efficiency or have limited learning and generalization capabilities. To address these issues, we propose a Bilateral Enhancement Network with signal-to-noise ratio fusion, called BiEnNet, for lightweight and generalizable low-light image enhancement.
View Article and Find Full Text PDFReal-time porosity inversion of rock based on the ultrasonic velocity and its compression-damage coupled model under triaxial compression.
Sci Rep
November 2024
School of Civil Engineering, Shaoxing University, Shaoxing, 312000, Zhejiang, China.
It is of great significance to evaluate the stress state and mechanical properties of deep rock engineering, by inverting the real-time porosity of rocks. In this study, the triaxial compression tests and real-time ultrasonic velocity tests were conducted on siltstone under different confining pressures. Firstly, a nonlinear model for the evolution of rock ultrasonic velocity with axial strain was proposed, based on the characteristic that the ultrasonic velocity rapidly increases and tends to stabilize.
View Article and Find Full Text PDFLinking structure to function: the connection between mesophyll structure and intrinsic water use efficiency.
Funct Plant Biol
October 2024
Institute of Environment, Department of Biological Sciences, Florida International University, Miami, FL, USA.
Climate change-driven drought events are becoming unescapable in an increasing number of areas worldwide. Understanding how plants are able to adapt to these changing environmental conditions is a non-trivial challenge. Physiologically, improving a plant's intrinsic water use efficiency (WUEi ) will be essential for plant survival in dry conditions.
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