Directivity and Frequency-Dependent Effective Sensitive Element Size of Needle Hydrophones: Predictions From Four Theoretical Forms Compared With Measurements. [PDF]
IEEE Trans Ultrason Ferroelectr Freq Control, 2018 Directivity is a hydrophone specification that describes response as a function of angle of incidence. The goal of this study was to compare, in the context of needle hydrophones, the commonly used rigid baffle model for hydrophone directivity to three ...
Wear KA, Baker C, Miloro P.
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Directivity and Frequency-Dependent Effective Sensitive Element Size of a Reflectance-Based Fiber-Optic Hydrophone: Predictions From Theoretical Models Compared With Measurements. [PDF]
IEEE Trans Ultrason Ferroelectr Freq Control, 2018 The goal of this work was to measure the directivity of a reflectance-based fiber-optic hydrophone at multiple frequencies and to compare it to four theoretical models: rigid baffle (RB), rigid piston (RP), unbaffled (UB), and soft baffle (SB). The fiber
Wear KA, Howard SM.
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Circular SAW Resonators: Influence of Sensitive Element Dimensions on Strength Characteristics and First Experimental Samples [PDF]
SensorsIn preceding research endeavors, the frequency characteristics of a ring resonator on surface acoustic waves made of various materials were studied. Investigations encompassed fixation techniques within the housing, the impact of external variables on ...
Sergey Yu. Shevchenko +3 more
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A methyl-sensitive element induces bidirectional transcription in TATA-less CpG island-associated promoters. [PDF]
PLoS One, 2018 How TATA-less promoters such as those within CpG islands (CGI) control gene expression is still a subject of active research. Here, we have identified the “CGCG element”, a ten-base pair motif with a consensus sequence of TCTCGCGAGA present in a group of
Mahpour A +4 more
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Design and Study of a PVDF Piezoelectric Film Force Sensor Based on Interface Force Field Reconstruction and Surface Domain Segmentation [PDF]
MicromachinesThe accurate measurement of dynamic forces is pivotal for advancing manufacturing process monitoring and enhancing equipment intelligence. To address the challenges of contact interface force field nonlinearity in existing PVDF piezoelectric film force ...
Kaiqiang Yan +8 more
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Landslides, 2019 Modelling of landslides in sensitive clays has long been recognised as a challenge. The strength reduction of sensitive clays when undergoing plastic deformation makes the failure proceed in a progressive manner such that a small slope failure may lead ...
Xue Zhang +3 more
semanticscholar +3 more sources
Review of Random Fiber Lasers for Optical Fiber Sensors
Sensors, 2023 A random fiber laser does not need a traditional resonant cavity and only uses the multiple scattering of disordered media to provide feedback to achieve laser output.
Meng Tian, Wentao Zhang, Wenzhu Huang
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Optimal Overall Dimensions of a Surface Acoustic Waves Ring Resonator
Известия высших учебных заведений России: Радиоэлектроника, 2023 Introduction. In previous works, the authors considered the frequency characteristics of sensitive elements made of various materials in the form of a ring resonator on surface acoustic waves (SAW), along with their fixing methods in the housing, the ...
S. Yu. Shevchenko, D. A. Mikhailenko
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Integral Thermo-Anemometers for Average Temperature and Airflow Measurement in Ducts, at Anemostat Outlets and in Ventilation Grilles [PDF]
Journal of Mechanical Engineering, 2020 When creating ventilation systems, it is important to correctly calculate the volumes of air inflow and outflow. If an error is made in the calculation or a redistribution of air flows is required, measurements are indispensable. The existing methods for
Oleh S. Tsakanian, Serhii V. Koshel
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Theoretical studies of multi-electrode sensor of components of electric field intensity vector in form of square plate of conductive material [PDF]
Омский научный вестник, 2019 The article examines a multi-element flat sensor of the components of the intensity vector of a low-frequency electric field manufactured using new technologies and capable of being integrated into modern gadgets. The sensor is suitable for measuring
S. V. Biryukov, A. V. Tyukin
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