Results 11 to 20 of about 646,532 (147)

Aging steller sea lions by growth layer groups in teeth

Wildlife Society Bulletin, 2019
Accurate age determination of individuals is crucial in estimating age structure in populations as well as age‐specific rates of reproduction and survival. We examined growth layer groups (GLGs) in the canine, incisor, and postcanine teeth of Steller sea
Takeomi Isono, Yumi Kobayashi, Vladimir N. Burkanov, Orio Yamamura   +3 more
doaj   +1 more source

Mafic-ultramafic intrusions of Matokulma, Palojärvi, and Hongonniittu within the Central Finland Granitoid Complex with special reference to their petrogenesis and ore potential [PDF]

Bulletin of the Geological Society of Finland
We describe three previously unknown or poorly studied mafic-ultramafic intrusions (Matokulma, Palojärvi, Hongonniittu) from the south-central part of the Paleoproterozoic Central Finland Granitoid Complex (CFGC).
Seppo Karvinen, Hannu V. Makkonen, Perttu Mikkola, O. Tapani Rämö, Hannu Huhma, Matti Niskanen   +5 more
doaj   +1 more source

HEU age determination [PDF]

, 1995
A new technique has been developed to determine the age of highly enriched uranium (HEU) in solids. Uranium age is defined as the time since the uranium-containing material was last subjected to a process capable of separating uranium from its radioactive-decay daughters.
Moorthy, Anant R., Kato, Walter Y.
openaire   +4 more sources

DeepOtolith v1.0: An Open-Source AI Platform for Automating Fish Age Reading from Otolith or Scale Images

Fishes, 2022
Every year, marine scientists around the world read thousands of otolith or scale images to determine the age structure of commercial fish stocks. This knowledge is important for fisheries and conservation management.
Dimitris V. Politikos, Nikolaos Sykiniotis, Georgios Petasis, Pavlos Dedousis, Alba Ordoñez, Rune Vabø, Aikaterini Anastasopoulou, Endre Moen, Chryssi Mytilineou, Arnt-Børre Salberg, Archontia Chatzispyrou, Ketil Malde   +11 more
doaj   +1 more source

Age-dependance of pteridines in the malaria vector, Anopheles stephensi

Pteridines, 2017
Determining the accurate age of malaria vectors is crucial to measure the risk of malaria transmission. A group of fluorescent chemicals derived from a pyrimidine-pyrazine ring structure known as pteridines from the head, thorax and whole body of adult ...
Edalat Hamideh, Akhoundi Mohammad, Basseri Hamidreza   +2 more
doaj   +1 more source

One year study on the reproductive biology, ovary characterization and age of the European sardine (Sardina pilchardus) in the middle-west Adriatic Sea

Frontiers in Marine Science, 2023
The ecological and economic relevance of the European sardine (Sardina pilchardus) in the Adriatic area is well established. High exploitation rates and instability of environmental parameters could potentially impair the reproductive physiology of this ...
Giulia Chemello, Greta Lucia Cerrone, Valentina Tavolazzi, Fortunata Donato, Francesco Tiralongo, Giorgia Gioacchini   +5 more
doaj   +1 more source

Shedding Light on the Protective Regime for Unaccompanied Minors Under the Family Reunification Directive: The Case of A and S

European Papers, 2018
(Series Information) European Papers - A Journal on Law and Integration, 2018 3(3), 1493-1502 | European Forum Insight of 5 November 2018 | (Table of Contents) I. Introduction. - II.
Salvo Nicolosi
doaj   +1 more source

The Using of Skeletochronology as a Screening Method for Age Determination of Alpine Newts (Mesotriton Alpestris): a Technical Report

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2015
Skeletochronology is a widely used method for age determination in amphibians. This method is based mainly on the histological examination of the finger bones.
Peter Makovický, Oldřich Kopecký, Pavol Makovický, Radek Matlach   +3 more
doaj   +1 more source

Age and growth of pompano, Trachinotus ovatus, from the Strait of Messina (central Mediterranean Sea)

Scientia Marina, 2021
This is the first paper to provide detailed information on the age and growth of Trachinotus ovatus. The size of the 244 individuals collected in the Strait of Messina ranged from 2.7 to 30.4 cm in fork length (LF) and 0.31 to 508.6 g in body mass (M ...
Danilo Malara, Francesco Longo, Luca Pagano, Maria Giulia Stipa, Teresa Romeo, Franco Andaloro, Silvestro Greco, Pietro Battaglia   +7 more
doaj   +1 more source

Differences between the sagitta, lapillus and vertebra in estimating age and growth in juvenile Mediterranean dolphinfish (Coryphaena hippurus)

Scientia Marina, 1999
The otoliths (sagittae and lapilli) and the vertebral centra were evaluated as ageing structures in dolphinfish age 0 juveniles (17.2–72 cm FL) caught in the seasonal small-scale fisheries of Majorca and Sicily (western and central Mediterranean ...
Beatriz Morales-Nin, Mirella Di Stefano, Antonio Potoschi, Enric Massutí, Pietro Rizzo, Salvatore Gancitano   +5 more
doaj   +1 more source