40 kHz
Terrorist Scanner Radar with Multiple Object Detection
... targets, (ii) through wall radar imaging, (iii) radar tomography and detection of concealed weapon, and (iv) passive bi- static radar. Radar is widely used in the application of weapon detection against terrorism. Radar ...
5
Effect of ultrasonic treatment on extraction and fatty acid profile of flaxseed oil
... (20–80 kHz), temperature (25–40 ◦ C), sonication time (20–80 min) and solid to solvent ratio (1:5, 1:10 and 1:15) for extraction of flaxseed ...of 40 kHz, temperature of 30 ◦ C, extraction ...
7
A CAN Protocol Based Hybrid Communication to Avoid Collision of Vehicles
... 1) Time gap calculation:The IR transmission uses pulse width modulation to communicate the breaking intensity. This signal is nothing but rectangular pulses with frequency around 40 khz. The detected signal ...
10
Echolocation clicks of two free ranging, oceanic delphinids with different food preferences: false killer whales Pseudorca crassidens and Risso's dolphins Grampus griseus
... Toothed whales (Odontoceti, Cetacea) navigate and locate prey by means of active echolocation. Studies on captive animals have accumulated a large body of knowledge concerning the production, reception and processing of ...
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Wideband electromagnetic dynamic acoustic transducer as a standard acoustic source for air coupled ultrasonic sensors
... operating with the WEMDAT in a pitch-catch configuration with a separation of approximately 271 mm. A 40 kHz 5-cycle tone burst voltage signal directly output by the function generator is taken as an ...
5
CONSTRUCTION AND PERFORMANCE EVALUATION OF AN ULTRASONIC DISTANCE METER
... at 40 KHz for distance ...a 40 KHz pulse burst and expect an echo from the object whose distance is to be measured with an average accuracy of 3mm and an error difference of ...
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Meteorological effects in the lower ionosphere as based on VLF/LF signal observations
... (40 kHz) signal recorded in Petropavlovsk-Kamchatsky and several Japanese stations has shown a sensitivity of the LF signal to variations of atmospheric pressure (Rozhnoi et ...
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Electrical impedance tomography based image reconstruction and feto maternal monitoring in pregnancy
... of 40 KHz to the phantom papaya through the two conducting electrodes and then inside conductivity is measured on the papaya surface in term of voltage between remaining pairs of the elec- trodes using ...
5
Processing of higher count rates in Troitsk nu-mass experiment
... The current DAQ hardware, used in the Troitsk nu-mass has a dead time of approximately 6.5 µs. It was sufficient for count rates of about 100 Hz used when the spectrum endpoint was investigated in search for electron ...
5
Imaging Defects in a Plate with Full Non Contact Scanning Laser Source Technique
... the 40-kHz transducer, the amplitude remained higher than the noise level without averaging over the entire range of ...360 kHz) could detect signals in oblique ...
6
Development of vocalization and hearing in American mink (Neovison vison)
... Strikingly, the deaf kits begin to vocalize extensively from day 1. Recordings during four deliveries (data not presented) reveal that kits begin to vocalize even earlier, immediately after birth. Considerable energy is ...
9
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
Sonochemical Decomposition of Perfluorinated Surfactants: Chain Length Effects
... The evolution and fate of vapour – filled microbubbles in solution is a dynamic and complex process. Serving as catalytic reaction vessels, measureable chemical effects occur in bubbles undergoing large-amplitude ...
122
Improvement of Water and Wastewater Treatment Process Using Various Sound Waves—A Consideration from the Viewpoint of Frequency
... (28 KHz) was carried ...(35 KHz), 2) Switzerland music box (3.75 Hz - 102 KHz), and 3) Japanese wind-bell (1500 Hz - ...8.5 KHz) were irradiated to drinking water, forest water and sea water ...
12
What determines the tuning of hearing organs and the frequency of calls? A comparative study in the katydid genus Neoconocephalus (Orthoptera, Tettigoniidae)
... Surprisingly, in all five species of Neoconocephalus, the frequency range of highest sensitivity of the hearing organ was not tuned to either communication signals or to bat echolocation calls but to an intermediate ...
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Passivity enforcement via residues perturbation for admittance representation of power system components
... kHz, and the passivity violation is mitigated. For passivity enforcement only four iterations is sufficient. It is considered that the residue corresponds to the poles with minimum RMS error to be perturbed. Since ...
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Khz cp (crude polysaccharide extract obtained from the fusion of Ganoderma lucidum and Polyporus umbellatus mycelia) induces apoptosis by increasing intracellular calcium levels and activating P38 and NADPH oxidase dependent generation of reactive oxygen species in SNU 1 cells
... denatured protein content was minimized. Preliminary ex- periments showed that a fourfold excess of 95% ethanol with respect to the sample volume was appropriate for pre- cipitation. Therefore, after the removal of the ...
13
Passive kHz lidar for the quantification of insect activity and dispersal
... Aside from the presented ranging method, other useful information regarding insect flight in relation to weather and topography can be extracted from quadrant detec- tors. Figure 10 shows the statistical distribution of ...
10
The application of NEC2 in predicting the radiated field from transmission tower arcing faults
... In order to find the dominant frequency of radiation within the 10 kHz and 10 MHz range modelled in NEC, a series of E-field results where obtained at varying frequencies. Experience with the software showed that ...
7
Effects on atmospherics at 6 kHz and 9 kHz recorded at Tripura during the India-Pakistan Border earthquake
... 27 kHz, 385 kHz and ...81 kHz before some ...163 kHz for a few hours to several days before and after the main shocks of shallow earthquakes in island areas or shallow sea regions are reported ...
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