Ultrasonics最新文献_第3页

Three-dimensional quantitative elastography using micro-ultrasound: Proof of concept 使用微超声的三维定量弹性成像：概念证明。

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-26 DOI: 10.1016/j.ultras.2025.107811

Reid Vassallo , Tajwar Abrar Aleef , Qi Zeng , Vedanth Desaigoudar , Brian Wodlinger , Miles P. Mannas , Peter C. Black , Septimiu E. Salcudean

{"title":"Three-dimensional quantitative elastography using micro-ultrasound: Proof of concept","authors":"Reid Vassallo , Tajwar Abrar Aleef , Qi Zeng , Vedanth Desaigoudar , Brian Wodlinger , Miles P. Mannas , Peter C. Black , Septimiu E. Salcudean","doi":"10.1016/j.ultras.2025.107811","DOIUrl":"10.1016/j.ultras.2025.107811","url":null,"abstract":"<div><div>Prostate cancer (PCa) is one of the most frequently diagnosed cancers worldwide, yet there are still limitations to overcome in its diagnostic workflow. Some of these limitations may be addressed by quantitative elastography and micro-ultrasound (microUS). This paper presents the first implementation of volumetric shear wave absolute vibro-elastography (S-WAVE) using the ExactVu™ microUS system. This implementation uses minimal additional hardware, making it conducive to insertion into the clinical workflow. In order to accurately recreate phasors with a frame rate below the Nyquist sampling rate for the excitation frequencies, a bandpass sampling strategy is employed for tissue motion tracing. This method is validated using a commercial quality assurance phantom, with inclusions of varying stiffness levels within a homogeneous background. All four inclusions could be visualized with the expected relative stiffness values, and the background stiffness could be measured repeatedly. This demonstrates the effectiveness of microUS-based S-WAVE imaging for the future detection of PCa lesions.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"158 ","pages":"Article 107811"},"PeriodicalIF":4.1,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cost-effective laser diode scanning 3D photoacoustic microscopy of melanocytic dermal tumors in situ 具有成本效益的激光二极管扫描三维光声显微镜黑色素细胞真皮肿瘤原位。

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-25 DOI: 10.1016/j.ultras.2025.107831

Javier A. Navarro-Calvo , Alejandro Cebrecos , Adrián Arándiga , Laura Lorenzo-Rebenaque , Francisco Marco-Jiménez , José M. Benlloch , Francisco Camarena , Juan J. García-Garrigós

{"title":"Cost-effective laser diode scanning 3D photoacoustic microscopy of melanocytic dermal tumors in situ","authors":"Javier A. Navarro-Calvo , Alejandro Cebrecos , Adrián Arándiga , Laura Lorenzo-Rebenaque , Francisco Marco-Jiménez , José M. Benlloch , Francisco Camarena , Juan J. García-Garrigós","doi":"10.1016/j.ultras.2025.107831","DOIUrl":"10.1016/j.ultras.2025.107831","url":null,"abstract":"<div><div>Management of melanoma skin cancer involves a wide excision followed by histopathological analysis to confirm the diagnosis, which is only guided by superficial dermoscopy. Dermatological oncology can thus benefit from high-resolution, 3D images provided by photoacoustic microscopy; however, its clinical translation is hindered by its elevated cost. Opening a pathway to point-of-care 3D melanoma assessment, we present the first demonstration of a cost-effective photoacoustic microscope (CePAM) utilizing fast laser diode scanning with a focused transducer in reflection mode. A novel application of a direct model inversion (DiMI) algorithm allowed a 55-fold enlargement of the image field of view beyond the transducer acoustic focus, reaching a 1-square millimeter laser-scanned area with uniform sensitivity (>20 dB). Furthermore, DiMI improved the intrinsic axial resolution of the system via multiple selective-plane scanning. The feasibility of CePAM is demonstrated by quantitative tests on phantoms and <em>in vivo</em> imaging of murine melanocytic dermal tumors, yielding accurate 3D images and virtual cross-sections consistent with histology.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"158 ","pages":"Article 107831"},"PeriodicalIF":4.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145201592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Acoustic emission based corrosion imaging as a possible method for identification of localized atmospheric corrosion of aluminum structures 基于声发射的腐蚀成像作为铝结构局部大气腐蚀识别的可能方法

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-25 DOI: 10.1016/j.ultras.2025.107807

Thomas Erlinger , Christoph Kralovec , Martin Schagerl , Markus Ostermann

{"title":"Acoustic emission based corrosion imaging as a possible method for identification of localized atmospheric corrosion of aluminum structures","authors":"Thomas Erlinger , Christoph Kralovec , Martin Schagerl , Markus Ostermann","doi":"10.1016/j.ultras.2025.107807","DOIUrl":"10.1016/j.ultras.2025.107807","url":null,"abstract":"<div><div>Atmospheric corrosion of aluminum alloys is a significant damage case that can occur in many industrial sectors, such as aircraft. To ensure the structural integrity of the affected mechanical structures, structural health monitoring (SHM) is considered a powerful tool. The acoustic emission (AE) method is therefore promising, as it is well suited to localize damage such as corrosion and has already shown to be able to estimate the extent of corrosion. However, the localization and quantification of low-amplitude AE events, such as those caused by atmospheric corrosion of aluminum alloy structures, have not been addressed. The present experimental study investigates the potential of the AE method to localize, quantify, and also characterize the type of atmospheric corrosion of thin-walled aluminum structures by so-called AE-based corrosion imaging, i.e., investigates the potential of AE for full corrosion identification. This AE-based corrosion imaging combines precise AE source localization results from a large number of individual AE events during corrosion to create images for the evaluation of the occurring corrosion. Such AE-based corrosion images can not only be used to localize corrosion, but it is shown that they can assist in estimating the spatial extent of it and also have the potential to characterize corrosion types by considering the temporal evolution of the corrosion images. Through the conducted study, the high potential of the AE method to enable full corrosion identification for future SHM applications for corrosion of aluminum structures is demonstrated.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"158 ","pages":"Article 107807"},"PeriodicalIF":4.1,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimized Apodizations with Training Simulations (OATS): Learned depth-dependent apodizations via differentiable beamforming for reduced operator tuning 训练模拟优化解耦：通过可微波束形成学习深度相关解耦，以减少算子调谐。

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-24 DOI: 10.1016/j.ultras.2025.107827

Di Xiao , Hassan Nahas , Misaki Hiroshima , Aya Kishimoto , Alfred C.H. Yu

{"title":"Optimized Apodizations with Training Simulations (OATS): Learned depth-dependent apodizations via differentiable beamforming for reduced operator tuning","authors":"Di Xiao , Hassan Nahas , Misaki Hiroshima , Aya Kishimoto , Alfred C.H. Yu","doi":"10.1016/j.ultras.2025.107827","DOIUrl":"10.1016/j.ultras.2025.107827","url":null,"abstract":"<div><div>Ultrasound is a point-of-care imaging modality that allows for real-time operation. While real-time capabilities are advantageous, one potential concern is the operator dependency of the modality as settings selected by the operator can alter the image appearance. Improvement of the B-mode image to necessitate fewer adjustments can reduce the operator dependency. Here, we propose a supervised learning framework (Optimal Apodizations with Training Simulations – OATS) to devise new apodization weights for image quality improvement. Our framework relies on the use of a differentiable beamformer to iteratively optimize apodization weights by comparing differences between simulated ground truth images and the corresponding post-beamformed images (simulated training set of over 200 images). We experimentally verified that these apodization weights resulted in higher quality B-mode images on both simulated and real-world data for focused and unfocused imaging scenarios. In the focused imaging scenario, the OATS-apodized images demonstrated reduced sidelobe artifact, improved lateral resolution (11 %), and improved signal equalization across depth when compared to a conventional Hanning apodization. In the unfocused imaging scenario, we observed reduced sidelobe artifacts and improved tissue-to-lesion contrast by up to 13 dB when compared against fixed F-number beamforming. Additionally, the OATS apodization weights were physically interpretable and learned to emulate image formation parameters such as time-gain compensation, F-number limited aperture, and transmit focus through the supervised learning procedure. Overall, the proposed framework successfully learned generalizable receive apodizations to improve image quality.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"159 ","pages":"Article 107827"},"PeriodicalIF":4.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145259294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Medical and biological applications of Langevin-type ultrasonic transducers: A narrative review 朗格万型超声换能器在医学和生物学上的应用综述

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-24 DOI: 10.1016/j.ultras.2025.107825

Gutemberg S. Cardoso , Yugo A. Martins , Renata F.V. Lopez , Antonio A.O. Carneiro , José H. Lopes , Theo Z. Pavan

{"title":"Medical and biological applications of Langevin-type ultrasonic transducers: A narrative review","authors":"Gutemberg S. Cardoso , Yugo A. Martins , Renata F.V. Lopez , Antonio A.O. Carneiro , José H. Lopes , Theo Z. Pavan","doi":"10.1016/j.ultras.2025.107825","DOIUrl":"10.1016/j.ultras.2025.107825","url":null,"abstract":"<div><div>Power ultrasound is increasingly important in healthcare applications involving non-ionizing radiation. The evolution of piezoelectric-based transducers has enabled the expansion and cost reduction of high-power ultrasonic systems. Among these, Langevin-type transducers are prominent due to their low cost, versatility, and ability to generate high acoustic intensity, which significantly affects the propagation medium. Structurally simple, these devices consist of two metal masses compressing piezoelectric ceramics, secured by a tensioning bolt. For applications demanding high acoustic pressure, mechanical amplifiers can be coupled to intensify ultrasound output. Langevin transducers find extensive use in medical and biological fields. In medicine, they are applied in surgical tools, targeted drug delivery, and cellular stimulation, offering advantages such as cutting precision and tissue selectivity. In biology, they support enzyme activation, microbial control in food, and environmentally friendly biofuel production. Their capacity to enhance biological responses while minimizing invasiveness makes them valuable in both research and clinical contexts. This review explores the main applications of Langevin transducers in biomedical and biotechnological areas. It highlights their functional advantages, operational challenges, and future prospects. By consolidating current knowledge, this paper aims to clarify their role and potential in advancing health-related technologies and sustainable biotechnological solutions.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"158 ","pages":"Article 107825"},"PeriodicalIF":4.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anisotropic properties of fracture zone in sandstone inferred from seismic moment tensors of acoustic emissions 由声发射地震矩张量推断的砂岩裂缝带各向异性。

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-23 DOI: 10.1016/j.ultras.2025.107832

Václav Vavryčuk , Matěj Petružálek , Tomáš Lokajíček

{"title":"Anisotropic properties of fracture zone in sandstone inferred from seismic moment tensors of acoustic emissions","authors":"Václav Vavryčuk , Matěj Petružálek , Tomáš Lokajíček","doi":"10.1016/j.ultras.2025.107832","DOIUrl":"10.1016/j.ultras.2025.107832","url":null,"abstract":"<div><div>We present an inversion for elastic anisotropy parameters of rocks using a large set of accurate moment tensors (MTs) derived from acoustic emissions (AEs). This method is demonstrated using AEs observed in a sandstone sample during a semi-circular bend test. We inverted 539 highly accurate MTs of AEs and retrieved both the orientation of anisotropy axes and elastic parameters defining the orthorhombic anisotropy within the fracture zone that developed in the sample during the test. The anisotropy results from the presence of aligned cracks in the fracture zone and the background transverse isotropy of the sandstone specimen. The observed anisotropy is moderate, with strengths of 18%, 14% and 21% for the P, S1 and S2 waves, respectively. We show that neglecting this anisotropy introduces a significant bias when estimating crack orientation and tensility from MTs. When anisotropy effects are accounted for by recalculating moment tensors into source tensors, the scatter in crack orientations is reduced, and the slope angle, which characterizes crack tensility, is systematically increased by approximately 10°. Our results confirm that the presented inversion method is a powerful and robust tool, capable of analyzing anisotropy in rocks, even in cases of low anisotropy symmetry.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"159 ","pages":"Article 107832"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145259297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of osteoporosis features in cortical bone models using pattern recognition methods applied to ultrasound data 应用超声数据的模式识别方法评估皮质骨模型中的骨质疏松症特征。

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-23 DOI: 10.1016/j.ultras.2025.107828

Alexey Tatarinov, Aleksandrs Sisojevs

{"title":"Evaluation of osteoporosis features in cortical bone models using pattern recognition methods applied to ultrasound data","authors":"Alexey Tatarinov, Aleksandrs Sisojevs","doi":"10.1016/j.ultras.2025.107828","DOIUrl":"10.1016/j.ultras.2025.107828","url":null,"abstract":"<div><div>Cortical bone plays a crucial role in bone strength in the context of osteoporosis. Thinning of the cortex and intracortical porosity developing from the endosteum are the main independent indicators of osteoporosis-related fractures risk, which can be separately quantified by advanced imaging techniques. Numerous studies have shown the sensitivity of ultrasonic guided waves to changes in the thickness and porosity of cortical bone both in models and in human subjects. The present study demonstrates feasibility of the pattern recognition approach to separate determination of factors of diagnostic interest – cortical thickness (<em>CTh</em>) and intracortical porosity as the relative thickness of the porous layer (<em>rPTh</em>), where a set of guided waves velocities at different frequencies are used as evaluation criteria. The experiments were carried out on acrylic plastic plates as compact bone phantoms of different thicknesses with simulated pores in the form of CNC-drilled holes from below. The distance-time slopes of fast and slow wave packets at 250, 100 and 50 kHz were obtained as distance-time slopes in the corresponding spatiotemporal waveform profiles built by stepwise acquisition of ultrasonic signals. The evaluation criteria (distance-time slopes) in the training dataset formed the decision rules – 3-dimensional surfaces of the criterion distribution in the field <em>CTh</em>-<em>rPTh</em>. For the test object, the intersection of the segments of the probabilistic solution according to three decision rules gave the evaluation answer. The method allowed us to determine the values of both factors <em>CTh</em> and <em>rPTh</em> with reasonable diagnostic accuracy at different thicknesses of the covering soft tissues. The proposed approach can be adapted for the assessment of osteoporosis after obtaining an appropriate database in human studies.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"158 ","pages":"Article 107828"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Method for improving the accuracy of damage signal recognition based on the thickness-graded additional structure 基于厚度分级附加结构的损伤信号识别精度提高方法。

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-23 DOI: 10.1016/j.ultras.2025.107830

Haoming Hu, Hongyu Cui, Xiaokai Yin, Huanqiu Xu, Tiange Yang

引用次数: 0

Interpolation techniques for ultrasonic data 超声波数据的插值技术

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-23 DOI: 10.1016/j.ultras.2025.107823

Georgios Sarris, Michael J.S. Lowe, Peter Huthwaite

{"title":"Interpolation techniques for ultrasonic data","authors":"Georgios Sarris, Michael J.S. Lowe, Peter Huthwaite","doi":"10.1016/j.ultras.2025.107823","DOIUrl":"10.1016/j.ultras.2025.107823","url":null,"abstract":"<div><div>Many applications where ultrasound is used for diagnostics exist where limited data is preventing a particular approach from being fully exploited; for example, sufficient data availability would allow the qualification of non-destructive evaluation (NDE) methods in-silico, and would potentially also enable the training of machine learning algorithms related to ultrasound and its applications. Real, experimental ultrasonic data is often scarce, and while it is already known that finite element (FE) modelling produces data which is sufficiently realistic to augment real data, the computational cost associated with its generation at the scales required for the aforementioned purposes is often prohibitive. In this work, we propose the use of interpolation techniques in combination with results from FE modelling to rapidly generate more data without the need to solve additional FE models. We present the relevant methods to achieve this, and validate them through four exemplary cases of increasing complexity. Validation is achieved through the comparison of interpolation-generated results to those generated by full FE modelling, demonstrating that our method is capable of producing results for different physical setups and signals of various degrees of complexity. The results were typically within less than 1% away from the expected, but generated at a fraction of the typical computational cost, and, while the validation cases examined are of interest to the NDE community, the method extends to other fields where ultrasonic data is of interest.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"158 ","pages":"Article 107823"},"PeriodicalIF":4.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calculation of relative velocity change of coherent waves using improved stretching technique 用改进拉伸法计算相干波的相对速度变化

IF 4.1 2区物理与天体物理

Ultrasonics Pub Date : 2025-09-20 DOI: 10.1016/j.ultras.2025.107824

Shengyang Zeng , Jiuzhou Tu , Clayton Malone , Jinying Zhu , Xiongbing Li

{"title":"Calculation of relative velocity change of coherent waves using improved stretching technique","authors":"Shengyang Zeng , Jiuzhou Tu , Clayton Malone , Jinying Zhu , Xiongbing Li","doi":"10.1016/j.ultras.2025.107824","DOIUrl":"10.1016/j.ultras.2025.107824","url":null,"abstract":"<div><div>The stretching cross-correlation technique is widely used in ultrasonic signal analysis to estimate relative wave velocity changes (<span><math><mrow><mi>d</mi><mi>v</mi><mo>/</mo><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math></span>) for nondestructive testing and structural health monitoring. It enables high-resolution velocity measurements in the time domain without requiring extremely high sampling rates. In strongly scattering heterogeneous materials such as concrete and rock, <span><math><mrow><mi>d</mi><mi>v</mi><mo>/</mo><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math></span> is often used to detect temporal changes or damage. Acoustoelastic testing in metals relies on accurate <span><math><mrow><mi>d</mi><mi>v</mi><mo>/</mo><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math></span> measurement from coherent waves, where the applicability and accuracy of the stretching technique remain uncertain and insufficiently addressed in the literature. This study theoretically investigates the sources of error in the stretching method when applied to coherent waves and introduces a modified algorithm based on stretching the reference signal. Simulations show that the accuracy of <span><math><mrow><mi>d</mi><mi>v</mi><mo>/</mo><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></math></span> estimation depends on multiple parameters, including the stretching window, wave transit time, and signal frequency. These factors are systematically analyzed in this study. The proposed method is validated through numerical simulations and experimental measurements of thermally induced velocity changes in a nylon specimen subjected to temperature variations.</div></div>","PeriodicalId":23522,"journal":{"name":"Ultrasonics","volume":"158 ","pages":"Article 107824"},"PeriodicalIF":4.1,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0