Article
Multidisciplinary Sciences
Meng Suo, Dong Zhang, Yan Yang
Summary: An improved full waveform inversion algorithm is proposed in this paper for quantitative measurement of bone density and early diagnosis of osteoporosis. By using various strategies and testing different inversion settings, the method shows superior results in detecting small changes in bones and meeting high precision requirements.
Article
Acoustics
T. C. Dourado, A. V. Alvarenga, F. C. Peters, W. J. Mansur, R. P. B. Costa-Felix
Summary: This study proposes a novel approach in ultrasonic non-destructive testing by combining multiple common ultrasound methods and improving attenuation estimation through measuring the reflection coefficient. The method utilizes a transmitter, two receivers, and analyzes the relationship between signal amplitude and energy losses.
Article
Thermodynamics
Yong Zhang, Jian-You Wang, Fu-Qiang Wang, Zhi-Ming Cai, Hong-Liang Yi
Summary: This study aims to theoretically enhance the radiative heat transfer (RHT) between nanoparticles in multi-particle and slab systems. The results show that strong coupling between multi-particle interactions and combined slab surface modes can significantly enhance inter-particle RHT at a proper slab thickness. Adding graphene sheets to the middle slab can regulate the coupling properties by changing the chemical potential of graphene. This work may have potential applications in complex many-body systems for enhancing and regulating contactless energy management.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Geochemistry & Geophysics
Yanhui Wu, Guowei Zhu, Wei Wang, Mengbo Zhang, Zhen Gao
Summary: In this study, the quantitative detection of faults using the channel wave seismic method is achieved through an effective technical process. The proposed method shows good stability and promising application prospects for fault evaluation.
Article
Optics
Di-Di Zheng, Hui-Min Zhao, Xiao-Jun Zhang, Jin-Hui Wu
Summary: We present a theoretical investigation on the Goos-Hanchen (GH) lateral shift of a probe field as it interacts with a three-layer system consisting of a Rydberg atomic gas sandwiched between two dielectric slabs. The study reveals that the nonlocal Kerr effect produced by Rydberg atoms with dipole-dipole interactions can significantly enhance the GH shift, surpassing the local Kerr effect at low atomic densities. Furthermore, the study suggests that the GH shift can be controlled by varying the atomic density within an appropriate range.
Article
Multidisciplinary Sciences
Christoph A. Haselwandtera, Yusong R. Guoc, Ziao Fuc, Roderick MacKinnon
Summary: This study predicts the shape of Piezo proteins in membranes using membrane elasticity theory and verifies the accuracy of the predictions through experiments. The study also reveals that the impact of the Piezo dome on the membrane footprint follows a spherical cap geometry.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Engineering, Mechanical
Yousef Parvari, Saeed Varzidehkar Tehrani, Siavash Kazemirad
Summary: This study aimed to assess the correlation of mechanical and structural properties of trabecular bone in different regions and directions, and proposed a non-invasive approach for the assessment of trabecular bone quality. The study used Rayleigh wave propagation tests and CT-scan imaging to evaluate two bovine femur trabecular bone specimens. The results showed significant heterogeneity and anisotropy in the elastic modulus of bone specimens in different regions and directions. The study also established a correlation between mechanical and structural properties and developed a semi-empirical relation for predicting the elastic modulus of trabecular bone using imaging or structural parameters.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Entomology
Doekele G. Stavenga, Heinrich L. Leertouwer, Kentaro Arikawa
Summary: Previously, it was believed that the coloration of butterfly wings was related to display and camouflage during resting. However, the high translucence of butterfly wings allows light to pass through, increasing their visibility during flight. The reflected light on the upper side of the wings is used for signal transmission, while the lower side is used for camouflage. Therefore, transmitted light also plays an important role in butterfly's visual signaling.
Article
Acoustics
Terence P. Lerch
Summary: The new thickness measurement technique utilizes air-coupled ultrasound to interrogate nonporous membranes, comparing amplitude and phase information from signals' frequency spectra to determine the thickness and surface density of the membrane. Experimental verification shows that the technique can accurately estimate the thickness of metallic and non-metallic sheet-like materials within 6% of their nominal values.
Article
Acoustics
Yongwei Xie, Yu Chen, Qiucheng Wang, Bo Li, Haitao Shang, Hui Jing
Summary: This prospective study aimed to evaluate the role of automated breast ultrasound (ABUS) and contrast-enhanced ultrasound (CEUS) in predicting the treatment response of breast cancer patients receiving neoadjuvant chemotherapy (NAC). The study found that changes in tumor volume, time to reach peak intensity, and peak intensity were independent predictors of treatment response. The CEUS-ABUS model achieved the highest AUC, indicating its potential for optimizing treatment in breast cancer patients.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2023)
Review
Engineering, Multidisciplinary
Fan Wei Hong, Kim Seng Chia
Summary: This study reviewed and systematically classified different NIRS acquisition modes, highlighting the need to address issues related to acquisition modes, unwanted signals, and measurement parameters in future NIRS investigations.
Article
Acoustics
Maciej Piskunowicz, Anush Sridharan, Laura Poznick, Elizabeth Silvestro, Misun Hwang
Summary: Increasing the mechanical index (MI) during contrast-enhanced ultrasound (CEUS) examinations can improve contrast-to-tissue ratio and image quality, as the default MI set by the manufacturer is often suboptimal.
JOURNAL OF ULTRASOUND IN MEDICINE
(2021)
Article
Acoustics
Mengjie Wu, Yu Hu, Jing Hang, Xiaojing Peng, Cuilian Mao, Xinhua Ye, Ao LI
Summary: This study aimed to evaluate the performance of CEUS in detecting soft tissue tumors and establish a US workflow for improved patient management. A predictive model combining quantitative CEUS parameters with conventional US features showed favorable performance in predicting malignancy. The US workflow based on CEUS and conventional US could potentially enhance the management of soft tissue tumor patients.
ULTRASOUND IN MEDICINE AND BIOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Hui Gao, Zhaoxia Wang, Mixiao Tan, Weiwei Liu, Liang Zhang, Ju Huang, Yang Cao, Pan Li, Zhigang Wang, Jiexin Wen, Tingting Shang, Haitao Ran
Summary: This study successfully constructed pH-responsive Ca@H nanoparticles for photoacoustic imaging-guided/monitored HIFUT combined with SDT therapy. This method has potential in the treatment of non-invasive tumors in the future.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2022)
Article
Multidisciplinary Sciences
Chiao-Yin Wang, Sung-Yu Chu, Yu-Ching Lin, Yu-Wei Tsai, Ching-Lung Tai, Kuen-Cheh Yang, Po-Hsiang Tsui
Summary: This study proposed using entropy imaging to collect information on bone microstructures for ultrasound bone tissue characterization. The results indicated that ultrasound entropy imaging revealed changes in bone microstructures and showed high performance and sensitivity in detecting variation among different bone densities, as well as in discriminating different age groups and individuals with different osteoporosis risks.
SCIENTIFIC REPORTS
(2022)
