NPJ acoustics最新文献

Achieving single cell acoustic localisation with deactivation super resolution. 通过失活超分辨率实现单细胞声学定位。

NPJ acoustics Pub Date : 2025-01-01 Epub Date: 2025-04-24 DOI: 10.1038/s44384-025-00008-7

Cameron A B Smith, Mengtong Duan, Jipeng Yan, Laura Taylor, Mikhail Shapiro, Meng-Xing Tang

引用次数: 0

Aeroacoustics and psychoacoustics characterization of a boundary layer ingesting ducted fan. 边界层吸入式导管风扇的气动声学和心理声学特性。

NPJ acoustics Pub Date : 2025-01-01 Epub Date: 2025-05-15 DOI: 10.1038/s44384-025-00010-z

Feroz Ahmed, Carlos Ramos-Romero, Antonio J Torija, Mahdi Azarpeyvand

{"title":"Aeroacoustics and psychoacoustics characterization of a boundary layer ingesting ducted fan.","authors":"Feroz Ahmed, Carlos Ramos-Romero, Antonio J Torija, Mahdi Azarpeyvand","doi":"10.1038/s44384-025-00010-z","DOIUrl":"10.1038/s44384-025-00010-z","url":null,"abstract":"A comprehensive wind tunnel investigation was conducted to analyze noise generation, propagation, and perception mechanisms in a boundary layer ingesting (BLI) ducted fan through integrated aeroacoustic and psychoacoustic assessments. The study examines interactions between an incoming adverse pressure gradient turbulent boundary layer flow, developed over a curved wall, and the ducted fan. The fundamental investigation confirms that the fan thrust regime influences aerodynamic, aeroacoustic, and psychoacoustic characteristics, exhibiting various haystacking phenomena. High-thrust operation induces a pronounced upstream suction effect, accelerating the boundary layer flow, amplifying bulk momentum, and intensifying turbulence ingestion, leading to fan aeroacoustics and associated fan haystacking in noise spectrum. In contrast, low-thrust operation minimally alters the boundary layer flow, with reduced suction and noise dominated by duct aeroacoustics and the associated duct haystacking due to interactions between ingested turbulence and the duct's acoustic field. The psychoacoustic assessments indicate that both fan and duct haystacking contribute to higher perceived noise in the high- and low-thrust regime, respectively.","PeriodicalId":520425,"journal":{"name":"NPJ acoustics","volume":"1 1","pages":"6"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12081303/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144096732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heterogeneous tumor blood oxygenation dynamics during phototherapy deciphered with real-time label-free photoacoustic imaging. 异质肿瘤血氧动力学在光疗期间破译实时无标签光声成像。

NPJ acoustics Pub Date : 2025-01-01 Epub Date: 2025-06-04 DOI: 10.1038/s44384-025-00012-x

Andrew Langley, Allison Sweeney, Ronak T Shethia, Brooke Bednarke, Faizah Wulandana, Marvin Xavierselvan, Srivalleesha Mallidi

{"title":"Heterogeneous tumor blood oxygenation dynamics during phototherapy deciphered with real-time label-free photoacoustic imaging.","authors":"Andrew Langley, Allison Sweeney, Ronak T Shethia, Brooke Bednarke, Faizah Wulandana, Marvin Xavierselvan, Srivalleesha Mallidi","doi":"10.1038/s44384-025-00012-x","DOIUrl":"10.1038/s44384-025-00012-x","url":null,"abstract":"Understanding the heterogeneity of tumor vascular function and oxygenation is key in individualizing treatments, especially with therapies that are ineffective in hypoxic microenvironments. Our previous work has demonstrated that ultrasound-guided photoacoustic imaging (US-PAI)-based blood oxygen saturation (StO2) measurements can be used as a surrogate marker for predicting the regionalized efficacy of photodynamic therapy (PDT). However, monitoring of StO2 during therapy could provide additional insights, specifically informing \"on the spot\" dosing decisions. In this work, we demonstrate the heterogeneous oxygen consumption during PDT by integrating light delivery fibers with the US-PAI transducer and tested the setup on murine tumor models with vascular-targeting benzoporphyrin derivative (BPD) PDT. Besides mapping dose-dependent oxygen utilization in real time, we also show that areas of reoxygenation post-PDT retain vascular function, confirmed with immunohistochemistry. Our results demonstrate the high potential of US-PAI in heterogenous tumoral oxygenation mapping for online dosimetry of cancer therapies such as PDT.","PeriodicalId":520425,"journal":{"name":"NPJ acoustics","volume":"1 1","pages":"9"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12137135/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144251852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Human perception and response to sound from unmanned aircraft systems within ambient acoustic environments. 在环境声环境中，人类对无人驾驶飞机系统声音的感知和反应。

NPJ acoustics Pub Date : 2025-01-01 Epub Date: 2025-02-12 DOI: 10.1038/s44384-024-00001-6

Michael J B Lotinga, Marc C Green, Antonio J Torija

{"title":"Human perception and response to sound from unmanned aircraft systems within ambient acoustic environments.","authors":"Michael J B Lotinga, Marc C Green, Antonio J Torija","doi":"10.1038/s44384-024-00001-6","DOIUrl":"10.1038/s44384-024-00001-6","url":null,"abstract":"Potential opportunities for unmanned aircraft systems (UAS) to offer societal benefits are accompanied by noise impact risks. Accordingly, it is important to develop greater understanding of perception and response to UAS sound. A laboratory listening experiment was undertaken to address this aim by investigating psychoacoustics of UAS sound exposure. The experiment incorporated contextual auditory and soundscape factors by embedding spatially-rendered UAS sounds within urban acoustic environments. The UAS covered varying aircraft designs, operating modes and numbers of flights. The experiment was focussed on determining noticeability and noise annoyance. The results indicate that annoyance responses were influenced by UAS type, operational mode, sound characteristics, quantities of flights, and the ambient acoustic environments in which UAS events occurred. Annoyance also appeared to have associations with personal attitude towards advanced air mobility technology, and with classification of residence area. Noticeability appeared to be influenced by UAS type, operating mode, loudness and ambient environment.","PeriodicalId":520425,"journal":{"name":"NPJ acoustics","volume":"1 1","pages":"2"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11841372/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143470447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Active control of electroacoustic resonators in the audible regime: control strategies and airborne applications. 电声谐振器在可听系统中的主动控制：控制策略和机载应用。

NPJ acoustics Pub Date : 2025-01-01 Epub Date: 2025-04-07 DOI: 10.1038/s44384-025-00006-9

Matthieu Malléjac, Maxime Volery, Hervé Lissek, Romain Fleury

引用次数: 0

Sonobiopsy for sensitive and spatially targeted molecular diagnosis through integrating ultrasound with liquid biopsy. 超声活检通过超声与液体活检相结合，实现敏感和空间靶向的分子诊断。

NPJ acoustics Pub Date : 2025-01-01 Epub Date: 2025-07-03 DOI: 10.1038/s44384-025-00014-9

Jinyun Yuan, Hong Chen

引用次数: 0