20 kHz
AN ACOUSTIC ANTIFOULING STUDY IN SEA ENVIRONMENT FOR SHIP HULLS USING ULTRASONIC GUIDED WAVES
... Ultrasonic guided waves (UGW) are waves travelling through bounded structures within a frequency range beyond the human audible range (normally > 20 kHz) and are widely used in Non-Destructive Testing ...
17
Frequency response analysis of microphone preamplifiers in the audible and ultrasonic regime
... This report presents an investigation on the frequency response of two types of electret microphone preamplifiers currently in use with SotonArray, Southampton University’s wind tunnel microphone array system. The ...
19
Comparison of Open-Ended Coax and TDR sensors for the measurement of soil dielectric permittivity in microwave frequencies
... A b s t r a c t. The study presents a comparison of two sensors for the determination of the complex permittivity of soil: a three- rod TDR probe and an Open-Ended Coax probe. The measurements were performed using a TDR ...
8
Ultrasonic effect on pH, electric conductivity, and tissue surface of button mushrooms, Brussels sprouts and cauliflower
... with 20 kHz probe and 40 kHz bath for 3 and 10 min were compared with blanched (80°C/3 min) and untreated ...a 20 kHz probe for 10 min in all samples as compared with the blanching ...
11
Detection of cancer antigens (CA-125) using gold nano particles on interdigitated electrode-based microfluidic biosensor
... at 20 kHz fre- quency) in static drop condition and approximately ...at 20 kHz frequency) in microfluidic flow condition with gold ...at 20 kHz frequency) and gold nano particle ...
12
The Using of Controlled Cavitation Processes in Some Engineering and Agricultural Applications
... of 20 Hz - 50 kHz and operated hydrodynamic cavitation on growth of some types of plants and data on influence of the specified private range on some physical and chemical properties of irrigation water are ...
6
Impact of Manufacturing Variability and Washing on Embroidery Textile Sensor
... Abstract: In this work, an embroidered textile moisture sensor is presented. The sensor is based on a capacitive interdigitated structure embroidered on a cotton substrate with an embroidery conductor yarn composed by ...
8
Microphone Arrays as a Leakage Detection Tool in Industrial Compressed Air Systems
... all advanced beamforming techniques. Figure 2 illustrates a simplified schematic of the test of the two open blows located half a meter away from each other. The microphones are placed 10 cm away from the open blow axis ...
10
Physics and Applications of Microresonator Solitons and Electro-optic Frequency Combs
... Phase noise levels for an Agilent MXG and PSG microwave sources carrier 11 GHz, 100 kHz offset are provided for comparison In the measured RF power spectra of the VCO at 10.89 GHz 20 kHz[r] ...
169
Synergistic Coupling Between Electrochemical and Ultrasound Treatments for Organic Pollutant Degradation as a Function of the Electrode Material (IrO2 and BDD) and the Ultrasonic frequency (20 and 800 kHz)
... frequencies, 20 and 800 kHz, on the degradation of the cationic dye CV (20 mg L −1 ...At 20 kHz, CV was poorly removed (after 120 minutes only 6% was eliminated), whereas at 800 ...
15
Assessment of Human Head Exposure to Wireless Communication Devices: Combined Electromagnetic and Thermal Studies for Diverse Frequency Bands
... IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz , IEEE Standard C95.1-1999, 1999 Edition.. 20.[r] ...
14
Effect of Mild Sonication Conditions on the Attributes of Lactobacillus delbrueckii ssp bulgaricus LB 12
... Shah and Jelen [7] have attributed increased bile tol- erance of Lactobacilli strains to their rigid cell wall. There could be other factors responsible for increased bile tolerance of Lactobacillus bulgaricus and ...
8
Synergistic Hurdle Effect of Physical and Chemical Treatments for Non-thermal Pasteurization of Guava (Psidium guajava) Juice
... Guava (Psidium guajava) is commonly known for its food and nutritional values throughout the world. It has high fermentable sugar composition when mature and ripe .It’s known for its sweet and tangy flavor and many uses. ...
5
Development of vocalization and hearing in American mink (Neovison vison)
... at the highest frequencies, where mink seems to be more sensitive. It has been suggested that hearing of high frequencies in least weasel and mink is evolved primarily as an adaption for locating and hunting rodents ...
9
A piezoelectric microvalve for compact high frequency high differential pressure micropumping systems
... 1 kHz, a series of tests was carried out for in- creasing imposed differential pressure across the valve ...1 kHz to actuate the valve cap upward against the valve orifice and downward toward the original ...
12
PARTIAL DISCHARGE DETECTION & LOCALIZATION IN HIGH VOLTAGE TRANSFORMER USING AN OPTICAL ACOUSTIC SENSOR
... This thesis presents a fiber optic acoustic sensing system design that can be used to detect and locate PD sources within a high voltage transformer. The system is based on an optical acoustic (OA) sensor that is capable ...
5
A Single Stage CCM Micro Inverter for Solar Photovoltaic AC Module fed BLDC Applications
... [17] F. Shinjo, K. Wada, and T. Shimizu, ―A single- phase grid-connected inverter with a power decoupling function,‖ in Proc. IEEE PowerElectron. Specialists Conf. (PESC), Jun. 2007, pp. 1245–1249. [18] H. Hu et al., ―A ...
7
Influence of ultrasonic treatment on the quality of jujube (Zizyphus mauritiana Lamk.) extract cultivars
... (24 kHz Frequency, 80% amplitude level (320 W power, pulse duration 5 Sec on and 5 Sec off, 5 min at 20°C) by using an ultrasonic processor (UP400S, Hielscher Ultrasonics GmbH Hielscher USA, ...
10
Improvement of Water and Wastewater Treatment Process Using Various Sound Waves—A Consideration from the Viewpoint of Frequency
... Third, an improvement of water quality using sounds by Japanese wind-bell with frequency 1500 Hz to 8.5 KHz in Table 4. Removal rate of anions by the ultrasonic wave are shown in Figures 12-14. From Table 4 and ...
12
Processing of higher count rates in Troitsk nu-mass experiment
... The results of simulations of different methods effectiveness for count rate about 40 kHz are shown in table 1. Front fit method, as expected, gives better results for pileup recognition, but it produces a lot of ...
5