Results 41 to 50 of about 10,266 (252)

Effect of the pulse trajectory on ultrasonic fluid velocity measurement [PDF]

Experiments in Fluids, 2007
In a general situation a non-uniform velocity field gives rise to a shift of the otherwise straight acoustic pulse trajectory between the transmitter and receiver transducers of a sonic anemometer. The aim of this paper is to determine the effects of trajectory shifts on the velocity as measured by the sonic anemometer.
Franchini Longhi, Sebastian Nicolas, Sanz Andres, Angel Pedro, Cuerva Tejero, Alvaro   +2 more
openaire   +2 more sources

Nanoscale Spatial Tuning of Superconductivity in Cuprate Thin Films via Direct Laser Writing

Advanced Functional Materials, EarlyView.
Maskless direct laser writing enables local control of oxygen stoichiometry in epitaxial YBCO thin films under ambient conditions. Sub‐micrometer grayscale patterns with tunable optical response and superconducting transport properties are achieved.
Irene Biancardi, Valerio Levati, Jordi Alcalà, Thomas Günkel, Nicolas Lejeune, Riccardo Girelli, Alejandro V. Silhanek, Valeria Russo, Narcís Mestres, Daniela Petti, Anna Palau, Edoardo Albisetti   +11 more
wiley   +1 more source

Evaluating Asphalt Concrete Properties by the Implementation of Ultrasonic Pulse Velocity

Journal of Engineering, 2020
In past years, structural pavement solution has been combined with destructive testing; these destructive methods are being replaced by non-destructive testing methods (NDT).
Nazar sajad kadium, Saad Isaa Sarsam
doaj   +1 more source

Interface‐Defect Synergy Engineering of Amorphous Ga2O3 for Voltage‐Tunable Dual‐Mode Optoelectronic Devices: Self‐Powered Imaging and Neuromorphic Vision

Advanced Functional Materials, EarlyView.
An interface‐defect co‐engineered strategy enables bias‐programmable integration of self‐powered photodetection and low‐power synaptic functionalities within a single‐material amorphous Ga2O3 device. This design achieves reversible switching via voltage modulation, supporting high‐contrast imaging and visual memory, and demonstrates a neuromorphic ...
Wanjun Li, Aijiang Yan, Lijuan Ye, Xuanyu Shan, Chunyan Liu, Hong Zhang, Shuren Zhou, Honglin Li, Di Pang, Yan Tang, Guoping Qin, Zhongqiang Wang, Peng Yu, Zhenxiang Cheng   +13 more
wiley   +1 more source

Methodology for Determining the Correct Ultrasonic Pulse Velocity in Concrete

Buildings
Quite often, concrete strength parameters must be determined in the shortest possible time. Due to the strong correlation between concrete’s mechanical and acoustic properties, ultrasonic devices can be used for this purpose. However, the ultrasonic pulse velocity (UPV) is influenced by a variety of factors, including the curing and exploitation ...
Uldis Lencis, Aigars Udris, Patricia Kara De Maeijer, Aleksandrs Korjakins   +3 more
openaire   +3 more sources

A Lightweight, 3D‐Printable, Low‐Cost, “One‐Click” Dorsal Skin Window for High‐Quality Long‐Term Multimodal Subcutaneous Tumor Imaging

Advanced Healthcare Materials, EarlyView.
An innovative, lightweight 3D‐printed skinfold chamber system is presented for long‐term intravital imaging. This affordable, biocompatible platform simplifies surgical implantation and allows high‐resolution, multimodal visualization of the tumor microenvironment for up to four weeks.
Iván Cortés Domínguez, Xabier Morales Urteaga, Maider Esparza, Lucía Grande, Ainhoa Urbiola, Cristina Ederra, Tomas Muñoz Santoro, Beatrice Pinci, Alvaro Teijeira, Carlos Ortiz de Solórzano   +9 more
wiley   +1 more source

Evaluation of Compressive Strength by Non- Destructive Test Using Ultrasonic Pulse Velocity With Maximum Size Aggregate (10 And 20)mm

Journal of Engineering and Sustainable Development, 2014
The concrete is tested non destructively to determine its mechanical properties (compressive strength) which is considered as the main property and the parameter used in its evaluation.
Laith A. Al-jaberi, Asmaa Mahdi Ali
doaj  

Analysis of the Stress-Strain State of operated reinforced Concrete Structures Using Ultrasound

Вестник Дагестанского государственного технического университета: Технические науки
Objective. Research and analysis of parameters of the stress-strain state of reinforced concrete beams using periodic ultrasonic testing in compressed and tensile zones and development of proposals for the application of the method in the inspection and ...
G. V. Nesvetaev, A. V. Kolleganov, N. A. Kolleganov, A. N. Ivlev, A. M. Omarov   +4 more
doaj   +1 more source

Mathematical model for predicting the ultrasonic pulse velocity of concrete

Cogent Engineering, 2023
AbstractThis paper proposes a mathematical model approach to predict the Ultrasonic Pulse Velocity (UPV) of concrete. This paper presents the formulation, calibration, evaluation, and validation of the proposed UPV model. An experimental program was developed to calibrate and evaluate the proposed model.
Fayez Moutassem, Issam Miqdadi
openaire   +2 more sources

Multifunctional Thiolated Hyaluronic Acid‐graft‐PEDOT Dressing With Antifouling, On‐Demand Drug Delivery and Electrical Stimulation for Wound Healing

Advanced Healthcare Materials, EarlyView.
A multifunctional P(EDOT‐co‐EDOT‐g‐THA) dressing acts as a dynamic biointerface integrating antifouling capability, on‐demand drug delivery, and electrical stimulation. It achieves electrochemically triggered thiolated hyaluronic acid (THA) release while modulating cellular responses for wound healing application.
Jingwen Yang, Jiwon Hong, Anthony Phillips, Bicheng Zhu, Jenny Malmstrom, Devon T. Bryant, Alireza Akbarinejad, Lisa I. Pilkington, Jadranka Travas‐Sejdic   +8 more
wiley   +1 more source