Results 21 to 30 of about 37,974 (214)
On Angles and Pseudo-Angles in Minkowskian Planes [PDF]
Mathematics, 2018 The main purpose of the present paper is to well define Minkowskian angles and pseudo-angles between the two null directions and between a null direction and any non-null direction, respectively. Moreover, in a kind of way that will be tried to be made clear at the end of the paper, these new sorts of angles and pseudo-angles can similarly to the ...
openaire +2 more sources
First assimilations of COSMIC radio occultation data into the Electron Density Assimilative Model (EDAM) [PDF]
Annales Geophysicae, 2008 Ground based measurements of slant total electron content (TEC) can be assimilated into ionospheric models to produce 3-D representations of ionospheric electron density.
M. J. Angling
doaj +1 more source
Aquatic Living Resources, 2019 In Central Europe, European grayling Thymallus thymallus is an endangered and vanishing fish species with high recreational angling value. For that reason, in January 2016, the minimum legal angling size for grayling was increased from 30 to 40 cm in the
Lyach Roman, Remr Jiri
doaj +1 more source
Aquatic Living Resources, 2021 Recreational fisheries are an important element of contemporary fisheries. Detailed information about the motivation and opinions of anglers regarding catch-and-release fishing in post-communist countries, such as Poland, has not been widely available to
Czarkowski Tomasz K. +2 more
doaj +1 more source
Physiological response to angling of Africa’s premier freshwater angling species, the tigerfish Hydrocynus vittatus [PDF]
, 2017 Angling fraternities widely promote catch-and-release (C&R) as a fisheries management tool. This study aimed to determine the physiological response of Africa’s premier freshwater angling species, the tigerfish Hydrocynus vittatus, to C&R angling in the ...
Wagenaar, Ina +9 more
core +1 more source
Knowledge and Management of Aquatic Ecosystems, 2011 In a catch-and-release recreational fishery fish populations can be impacted by lethal and sub-lethal effects. In terms of sub-lethal effects anglers may directly (catch-and-release) and/or indirectly (angling-related disturbances, e ...
Klefoth T., Kobler A., Arlinghaus R.
doaj +1 more source
Inland fisheries management in Poland - current state and institutional conditions
Economics and Environment, 2023 The state, development directions, opportunities and ways to improve inland fisheries management in Poland are described and discussed. Most of the country's inland waters are public. For fishing purposes, they are divided into fisheries districts. With
Konrad Turkowski +2 more
doaj +1 more source
Frontiers in ChemistryThis study introduces a sustainable and efficient method for synthesizing quinazolinones, a class of heterocyclic compounds with significant pharmaceutical applications, via a multicomponent reaction (MCR) strategy.
Xiaotong Liang, Ziqi Yang, Bo Li
doaj +1 more source
Current: The Journal of Marine Education, 2019 The inclusion of interdisciplinary, hands-on learning incorporated with engineering challenges is a great way to teach marine science content as well as foster collaborative problem-solving. To teach about oyster life cycles and the ecosystem engineering
Lisa Pike, Bebe Dalton Harrison
doaj +1 more source
Knowledge and Management of Aquatic Ecosystems, 2015 Angling competitions are a popular leisure activity in reservoirs of Southern Portugal. These competitions can gather more than 100 anglers aiming to catch the maximum fish weight.
Amaral S.D., Franco A., Ferreira M.T.
doaj +1 more source