keyword
https://read.qxmd.com/read/38492292/application-of-ultrasound-treatment-in-pork-marination-effects-on-moisture-migration-and-microstructure
#21
JOURNAL ARTICLE
Lina Guo, Xinyan Zhang, Chen Hong, Ning Liu, Ningning Ouyang, Junlin Chen, Muthupandian Ashokkumar, Haile Ma
To better understanding the effects of ultrasonic marination on the porcine tissue, the moisture migration and microstructure were investigated in this study. Additionally, the acoustic field distribution was analysis using COMSOL Multiphysics. The low-filed NMR results demonstrated that ultrasonic curing induced a leftward shift in T21 and a rightward shift in T22 , accompanied by a significant reduction in A22 , thereby enhancing the water-holding capacity of pork. The SEM and TEM observation showed that the presence of larger interstitial gaps between muscle fibers facilitated the diffusion of NaCl...
March 5, 2024: Food Chemistry
https://read.qxmd.com/read/38491848/does-phenology-influence-predation-rate-on-salmo-trutta-parr-during-lake-migration
#22
JOURNAL ARTICLE
Richard J Kennedy, James Barry, Adele Boyd, Michelle Allen
Acoustic tags fitted with predation sensors, which trigger following ingestion by piscivorous predators, were used to compare direct predation rates during downstream migration (out-migration) of potamodromous (freshwater) brown trout (Salmo trutta L.) parr from their natal river into a large freshwater lake system during spring and autumn. Thirty-eight spring migrants were tagged across two study years (2021 and 2022) of which 13 individuals (34%) were predated. By contrast 40 autumn migrants were tagged (2020 and 2021) of which three individuals (7...
March 16, 2024: Journal of Fish Biology
https://read.qxmd.com/read/38491691/acoustic-monitoring-of-compaction-in-cohesive-granular-materials
#23
JOURNAL ARTICLE
Vincent Canel, Xiaoping Jia, Michel Campillo, Ioan Ionescu
We study the transition from cohesive to noncohesive states of cemented granular materials (synthetic rocks) under oedometric loading, combining simultaneous measurements of ultrasound velocity and acoustic emission (AE: microseosmicity). Our samples are agglomerates made of glass beads bonded with a few percent of cement, either ductile or brittle. These cemented granular samples exhibit an inelastic compaction beyond certain axial stresses likely due to the formation of compaction bands, which is accompanied by a significant decrease of compressional wave velocity...
February 2024: Physical Review. E
https://read.qxmd.com/read/38491652/band-gap-of-shear-horizontal-waves-for-one-dimensional-phononic-crystals-with-chiral-materials
#24
JOURNAL ARTICLE
Pengshuai Dai, Yanfeng Wang, Qinghua Qin, Jianshan Wang
Extensive applications of chiral lattice structures in the field of acoustic wave manipulation and vibration modulation show the effectiveness of chirality route to the design of phononic crystals. However, how and to what extent the material chirality affects the band gap properties of phononic crystals remains unclear. In this study, one-dimensional phononic crystals made of chiral materials is proposed, and a theoretical model of shear horizontal (SH) wave propagation in the chiral phononic crystals is developed based on the noncentrosymmetric micropolar elasticity theory...
February 2024: Physical Review. E
https://read.qxmd.com/read/38491373/chinook-salmon-depth-distributions-on-the-continental-shelf-are-shaped-by-interactions-between-location-season-and-individual-condition
#25
JOURNAL ARTICLE
Cameron Freshwater, Sean C Anderson, David D Huff, Joseph M Smith, Doug Jackson, Brian Hendriks, Scott G Hinch, Stephen Johnston, Andrew W Trites, Jackie King
BACKGROUND: Ecological and physical conditions vary with depth in aquatic ecosystems, resulting in gradients of habitat suitability. Although variation in vertical distributions among individuals provides evidence of habitat selection, it has been challenging to disentangle how processes at multiple spatio-temporal scales shape behaviour. METHODS: We collected thousands of observations of depth from <mml:math xmlns:mml="https://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>></mml:mo> <mml:mspace/> <mml:mn>300</mml:mn></mml:mrow> </mml:math> acoustically tagged adult Chinook salmon Oncorhynchus tshawytscha, spanning multiple seasons and years...
March 15, 2024: Movement Ecology
https://read.qxmd.com/read/38491140/acoustic-monitoring-reveals-a-diel-rhythm-of-an-arctic-seabird-colony-little-auk-alle-alle
#26
JOURNAL ARTICLE
Evgeny A Podolskiy, Monica Ogawa, Jean-Baptiste Thiebot, Kasper L Johansen, Anders Mosbech
The child-like question of why birds sing in the morning is difficult to answer, especially in polar regions. There, in summer animals live without the time constraints of daylight, and little is known about the rhythmicity of their routines. Moreover, in situ monitoring of animal behavior in remote areas is challenging and rare. Here, we use audio data from Greenland to show that a colony of a key Arctic-breeding seabird, the little auk (Alle alle), erupts with acoustic excitement at night in August, under the midnight sun...
March 15, 2024: Communications Biology
https://read.qxmd.com/read/38491122/study-on-the-strength-deterioration-characteristic-and-damage-model-of-coal-pillar-dams-with-repeated-water-immersion-in-underground-reservoirs
#27
JOURNAL ARTICLE
Beifang Wang, Duo Zhou, Jing Zhang, Bing Liang
The continuous operation of coal mine underground reservoirs exposes the coal pillar dams to mining disturbances and prolonged water immersion, resulting in the deterioration of coal pillars' mechanical properties and posing a serious threat to the dam stability. To this end, coal samples from the proposed pillar dam in the 5-2 coal seam of Daliuta Mine in Shendong Mining Area were selected for conducting water absorption tests and triaxial compression tests under conditions of repeated water immersion, in order to study the deterioration of the mechanical properties and acoustic emission damage characteristic of coal samples as well as the mechanism behind the deterioration of coal samples under the water-rock interaction...
March 15, 2024: Scientific Reports
https://read.qxmd.com/read/38490060/nonlinear-effects-of-dual-frequency-focused-ultrasound-on-the-on-demand-regulation-of-acoustic-droplet-vaporization
#28
JOURNAL ARTICLE
Yubo Zhao, Yi Feng, Liang Wu
Dual-frequency ultrasound has been widely employed to enhance and regulate acoustic droplet vaporization (ADV) but the role of ultrasonic nonlinear effects on it remains unclear. The main objective of this study is to investigate the influence of nonlinear effects on the control of ADV nucleation under different dual-frequency focused ultrasound conditions. ADV nucleation of PFC nanodroplets activated by nonlinear dual-frequency ultrasound was modeled and parametric studies were conducted to investigate the influence of dual-frequency ultrasound frequency and acoustic power on the degree of nonlinearity (DoN), nucleation rates and dimensions of the nucleation region in a wide parameter range...
March 12, 2024: Ultrasonics Sonochemistry
https://read.qxmd.com/read/38489464/multiwavelength-erbium-doped-fiber-laser-using-the-polarization-hole-burning-effect-for-multichannel-acoustic-detection
#29
JOURNAL ARTICLE
Cheng Zhou, Shengnan Zhou, Jiajun Tian, Yong Yao, Yongkang Dong
We propose and demonstrate a novel, to the best of our knowledge, fiber-optic multipoint acoustic detection system based on a multiwavelength erbium-doped fiber (EDF) laser (MWEDFL) using the polarization-hole-burning effect with Fabry-Perot interferometers as the acoustic cavity-loss modulator. A polarization-wavelength-related filter is designed to assign a distinct polarization state to each laser wavelength. By adjusting the polarization state, the polarization-dependent loss and gain of each laser line are tuned to be equal, effectively suppressing the mode competition of EDF and enabling a stable MWEDFL...
March 15, 2024: Optics Letters
https://read.qxmd.com/read/38489426/loading-effect-based-three-dimensional-microfabrication-empowers-on-chip-brillouin-optomechanics
#30
JOURNAL ARTICLE
Peng Lei, Mingyu Xu, Yunhui Bai, Zhangyuan Chen, Xiaopeng Xie
The acousto-optic interaction known as stimulated Brillouin scattering (SBS) has emerged as a fundamental principle for realizing crucial components and functionalities in integrated photonics. However, the main challenge of integrating Brillouin devices is how to effectively confine both optical and acoustic waves. Apart from that, the manufacturing processes for these devices need to be compatible with standard fabrication platforms and streamlined to facilitate their large-scale integration. Here, we demonstrate a novel, to the best of our knowledge, suspended nanowire structure that can tightly confine photons and phonons...
March 15, 2024: Optics Letters
https://read.qxmd.com/read/38489260/stationary-stable-cross-correlation-pattern-and-task-specific-deviations-in-unresponsive-wakefulness-syndrome-as-well-as-clinically-healthy-subjects
#31
JOURNAL ARTICLE
David E Apablaza-Yevenes, María Corsi-Cabrera, Antonieta Martinez-Guerrero, Georg Northoff, Caterina Romaniello, Marina Farinelli, Erik Bertoletti, Markus F Müller, Zeidy Muñoz-Torres
Brain dynamics is highly non-stationary, permanently subject to ever-changing external conditions and continuously monitoring and adjusting internal control mechanisms. Finding stationary structures in this system, as has been done recently, is therefore of great importance for understanding fundamental dynamic trade relationships. Here we analyse electroencephalographic recordings (EEG) of 13 subjects with unresponsive wakefulness syndrome (UWS) during rest and while being influenced by different acoustic stimuli...
2024: PloS One
https://read.qxmd.com/read/38489113/understanding-vessel-noise-across-a-network-of-marine-protected-areas
#32
JOURNAL ARTICLE
Megan F McKenna, Timothy J Rowell, Tetyana Margolina, Simone Baumann-Pickering, Alba Solsona-Berga, Jeffrey D Adams, John Joseph, Ella B Kim, Annebelle Cm Kok, Anke Kügler, Marc O Lammers, Karlina Merkens, Lindsey Peavey Reeves, Brandon L Southall, Alison K Stimpert, Jack Barkowski, Michael A Thompson, Sofie Van Parijs, Carrie C Wall, Eden J Zang, Leila T Hatch
Protected areas are typically managed as a network of sites exposed to varying anthropogenic conditions. Managing these networks benefits from monitoring of conditions across sites to help prioritize coordinated efforts. Monitoring marine vessel activity and related underwater radiated noise impacts across a network of protected areas, like the U.S. National Marine Sanctuary system, helps managers ensure the quality of habitats used by a wide range of marine species. Here, we use underwater acoustic detections of vessels to quantify different characteristics of vessel noise at 25 locations within eight marine sanctuaries including the Hawaiian Archipelago and the U...
March 15, 2024: Environmental Monitoring and Assessment
https://read.qxmd.com/read/38488460/perceptual-uncertainty-explains-activation-differences-between-audiovisual-congruent-speech-and-mcgurk-stimuli
#33
JOURNAL ARTICLE
Chenjie Dong, Uta Noppeney, Suiping Wang
Face-to-face communication relies on the integration of acoustic speech signals with the corresponding facial articulations. In the McGurk illusion, an auditory /ba/ phoneme presented simultaneously with a facial articulation of a /ga/ (i.e., viseme), is typically fused into an illusory 'da' percept. Despite its widespread use as an index of audiovisual speech integration, critics argue that it arises from perceptual processes that differ categorically from natural speech recognition. Conversely, Bayesian theoretical frameworks suggest that both the illusory McGurk and the veridical audiovisual congruent speech percepts result from probabilistic inference based on noisy sensory signals...
March 2024: Human Brain Mapping
https://read.qxmd.com/read/38488452/effects-of-training-length-on-adaptation-to-noise-vocoded-speech
#34
JOURNAL ARTICLE
Julia R Drouin, Stephany Flores
Listeners show rapid perceptual learning of acoustically degraded speech, though the amount of exposure required to maximize speech adaptation is unspecified. The current work used a single-session design to examine the length of auditory training on perceptual learning for normal hearing listeners exposed to eight-channel noise-vocoded speech. Participants completed short, medium, or long training using a two-alternative forced choice sentence identification task with feedback. To assess learning and generalization, a 40-trial pre-test and post-test transcription task was administered using trained and novel sentences...
March 1, 2024: Journal of the Acoustical Society of America
https://read.qxmd.com/read/38487807/meet-the-authors-georgios-rizos-jenna-l-lawson-and-bj%C3%A3-rn-w-schuller
#35
Georgios Rizos, Jenna L Lawson, Björn W Schuller
In their recent publication in Patterns , the authors proposed a methodology based on sample-free Bayesian neural networks and label smoothing to improve both predictive and calibration performance on animal call detection. Such approaches have the potential to foster trust in algorithmic decision making and enhance policy making in applications about conservation using recordings made by on-site passive acoustic monitoring equipment. This interview is a companion to these authors' recent paper, "Propagating Variational Model Uncertainty for Bioacoustic Call Label Smoothing"...
March 8, 2024: Patterns
https://read.qxmd.com/read/38487806/propagating-variational-model-uncertainty-for-bioacoustic-call-label-smoothing
#36
JOURNAL ARTICLE
Georgios Rizos, Jenna Lawson, Simon Mitchell, Pranay Shah, Xin Wen, Cristina Banks-Leite, Robert Ewers, Björn W Schuller
Along with propagating the input toward making a prediction, Bayesian neural networks also propagate uncertainty. This has the potential to guide the training process by rejecting predictions of low confidence, and recent variational Bayesian methods can do so without Monte Carlo sampling of weights. Here, we apply sample-free methods for wildlife call detection on recordings made via passive acoustic monitoring equipment in the animals' natural habitats. We further propose uncertainty-aware label smoothing, where the smoothing probability is dependent on sample-free predictive uncertainty, in order to downweigh data samples that should contribute less to the loss value...
March 8, 2024: Patterns
https://read.qxmd.com/read/38486778/acoustic-characteristics-of-bedrooms-in-two-types-of-long-term-care-facilities-in-china
#37
JOURNAL ARTICLE
Mingxuan Xie, Zhixiao Deng, Zhengnan Xiang
The aim of this study was to quantitatively determine the acoustic characteristics of bedrooms in two types of long-term care facilities in China. Objective acoustic conditions, including noise levels and reverberation times, were measured through a series of acoustic measurements in twelve bedrooms in two nursing homes and three adult care homes in Kunming city, China. The impacts of noise and sound preferences were evaluated through a questionnaire survey administered to residents and nursing staff. In terms of the sound field, the background noise levels in most measured bedrooms exceeded the WHO's recommended value (30 dBA) by approximately 10-15 dBA...
March 15, 2024: Heliyon
https://read.qxmd.com/read/38486613/different-in-different-ways-a-network-analysis-approach-to-voice-and-prosody-in-autism-spectrum-disorder
#38
JOURNAL ARTICLE
Ethan Weed, Riccardo Fusaroli, Elizabeth Simmons, Inge-Marie Eigsti
The current study investigated whether the difficulty in finding group differences in prosody between speakers with autism spectrum disorder (ASD) and neurotypical (NT) speakers might be explained by identifying different acoustic profiles of speakers which, while still perceived as atypical, might be characterized by different acoustic qualities. We modelled the speech from a selection of speakers (N = 26), with and without ASD, as a network of nodes defined by acoustic features. We used a community-detection algorithm to identify clusters of speakers who were acoustically similar and compared these clusters with atypicality ratings by naïve and expert human raters...
2024: Language Learning and Development
https://read.qxmd.com/read/38486318/free-cognitive-capacity-assessed-by-the-p300-method-during-manual-docking-training-in-space
#39
JOURNAL ARTICLE
Juri Akardevic Bubeev, Bernd Johannes, Tatyana I Kotrovska, Darya Schastlivtseva, Sergey Bronnikov, Hans-Juergen Hoermann, Anthony W K Gaillard
INTRODUCTION: The classical P300 brain potential method was used to assess the cognitive capacity during training of manual docking in space. The aim of the study was to enhance the safety of this operation during a mission. METHODS: To examine this, N = 8 cosmonauts had to perform the manually controlled docking task simultaneously with an acoustic monitoring task. The P300 component was evoked by the acoustic stimuli of the secondary task. The docking task had to be executed at three difficulty levels: low (station not turning); medium (station turning around one axis); and difficult (station turning around three axes)...
April 1, 2024: Aerospace Medicine and Human Performance
https://read.qxmd.com/read/38486293/improved-emotion-differentiation-under-reduced-acoustic-variability-of-speech-in-autism
#40
JOURNAL ARTICLE
Mathilde Marie Duville, Luz María Alonso-Valerdi, David I Ibarra-Zarate
BACKGROUND: Socio-emotional impairments are among the diagnostic criteria for autism spectrum disorder (ASD), but the actual knowledge has substantiated both altered and intact emotional prosodies recognition. Here, a Bayesian framework of perception is considered suggesting that the oversampling of sensory evidence would impair perception within highly variable environments. However, reliable hierarchical structures for spectral and temporal cues would foster emotion discrimination by autistics...
March 14, 2024: BMC Medicine
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