Results 21 to 30 of about 5,046,171 (299)
Journal of Marine Science and Engineering, 2013 The body tilt angle of a fish has a large effect on the acoustic target strength. For an accurate estimation of fish abundance using acoustic methods, it is necessary to measure body tilt angles in free-ranging fish.
Hideaki Tanoue +7 more
doaj +1 more source
水下无人系统学报, 2023 In order to study the acoustic scattering of underwater targets, the conversion factor of plane wave and spherical wave of point sound source was calculated on the basis of the analytical solution of the classical Rayleigh normal series, combined with ...
Jinyan ZHENG, Meixia CHEN, Wenkai DONG
doaj +1 more source
Quantifying the strength of miRNA–target interactions
Methods, 2015 We quantify the strength of miRNA-target interactions with MIRZA, a recently introduced biophysical model. We show that computationally predicted energies of interaction correlate strongly with the energies of interaction estimated from biochemical measurements of Michaelis-Menten constants.
Breda, Jeremie +4 more
openaire +4 more sources
Effect of direct supervision of a strength coach on measures of muscular strength and power in young rugby league players [PDF]
, 2004 The purpose of the present study was to examine the influence of direct supervision on muscular strength, power, and running speed during 12 weeks of resistance training in young rugby league players. Two matched groups of young (16.7 ± 1.1 years [mean ±
Dascombe, Ben (R21089) +5 more
core +1 more source
Acoustic Scattering Characteristics of Underwater Eight-grid Air-filled Cavity Corner Reflector
水下无人系统学报, 2022 Underwater corner reflectors have a strong acoustic scattering ability and can be used to mark underwater structures and simulate underwater false targets. In accordance with the limitation of the reflection range of a single-grid corner reflector, a new
Zi-chao CHU, Yi LUO, Wu-di WEN
doaj +1 more source
Improving the Accuracy of Krill Target Strength Using a Shape Catalog
Frontiers in Marine Science, 2021 Antarctic krill are subject to precautionary catch limits, based on biomass estimates, to ensure human activities do not adversely impact their important ecological role.
Fiona Bairstow +7 more
doaj +1 more source
Frontiers in Marine Science, 2022 Chub mackerel (Scomber japonicus) is an important commercial fish in the Northwest Pacific Ocean. Accurate target strength (TS) underpins acoustic stock assessment but the TS of S. japonicus is still poorly understood.
Jianfeng Tong +10 more
doaj +1 more source
Юг России: экология, развитие, 2020 Aim. The aim of the study was to estimate the coefficients of the equation TSmax=f(SL) considering the characteristics of an acoustic scattering model based on the morphological characteristics of the swim bladder of the Coregonus migratorius (Georgi ...
P. N. Anoshko +5 more
doaj +1 more source
SWIMBLADDER ON FISH TARGET STRENGTH
TELKOMNIKA (Telecommunication Computing Electronics and Control), 2008 This paper discusses of Target Strength (TS) for the Selar boops (Oxeye scad) and Megalaspis cordyla (Torpedo scad), the most commercially fish in Malaysia. TS can be determined from in situ measurements and calculation using acoustic fish model. TS value, depth, and position (x-y-z) of fish targeted can be viewed from echogram using FQ-80 Analyzer by ...
Sunardi, S +3 more
openaire +2 more sources
Quantification of Chaoborus and small fish by mobile upward-looking echosounding
Journal of Limnology, 2018 Chaoborus larvae inhabit frequently the water column of lakes, when they can be mistaken for small fish. Because larvae ascend up to the blind zone of downward-looking echo sounding at night, quantitative acoustic estimation of them is possible only with
Roman Baran +8 more
doaj +1 more source