Results 21 to 30 of about 1,232 (176)

VPLYV PANDÉMIE COVID – 19 NA MOBILITU OBYVATEĽOV VO VEREJNEJ DOPRAVE

open access: yesPerner’s Contacts, 2022
Pandémia COVID 19 predstavuje pre našu spoločnosť obrovské výzvy a zasiahla všetky oblasti nášho života. Jednou z oblastí, ktoré boli zasiahnuté najvýznamnejšie je hromadná osobná doprava. Cieľom tohto príspevku je poukázať na zmeny dopravného správania
Veronika Harantová, Mikuláš Černý
doaj   +1 more source

NÁVRH OPATRENÍ PRE SKVALITNENIE A ZEFEKTÍVNENIE PREPRAVNÉHO PROCESU V ŽELEZNIČNEJ OSOBNEJ DOPRAVE V ĎALŠOM OBDOBÍ PANDÉMIE

open access: yesPerner’s Contacts, 2023
Pandémia COVID-19 ovplyvnila mnohé aspekty nášho každodenného života. Vlády prijali množstvo opatrení na obmedzenie šírenia pandémie, ktorá mala priamy vplyv na každodennú mobilitu, výber spôsobu dopravy a fungovanie verejnej dopravy.
Zdenka Bulková   +2 more
doaj   +1 more source

Bottlenecks in the migration routes of Amazonian manatees and the threat of hydroelectric dams [PDF]

open access: yesActa Amazonica, 2017
In a particular region within western Amazonia, Amazonian manatees (Trichechus inunguis) live in a floodplain environment that becomes inhospitable for them during the annual low-water season.
Eduardo Moraes ARRAUT   +4 more
doaj   +2 more sources

Chromosome painting in the manatee supports Afrotheria and Paenungulata

open access: yesBMC Evolutionary Biology, 2007
Background Sirenia (manatees, dugongs and Stellar's sea cow) have no evolutionary relationship with other marine mammals, despite similarities in adaptations and body shape.
Zori Roberto T   +7 more
doaj   +1 more source

Catalogue of marine mammals of the Mammalogical collection of the Museo de La Plata, Argentina

open access: yesRevista del Museo de La Plata, 2016
This catalogue lists the materials of marine mammals housed in the Mammalogical collection of Museo de La Plata. This contribution is an update of the unpublished catalogue made by R. Bastida, J.B. Desojo, and L.H. Soibelzon in 1997. It includes all the
A. Itatí Olivares   +6 more
doaj   +1 more source

Morphological and systematic re-assessment of the late Oligocene “Halitherium” bellunense reveals a new crown group genus of Sirenia [PDF]

open access: yesActa Palaeontologica Polonica, 2017
“Halitherium” bellunense is exclusively known from a single individual from upper Oligocene glauconitic sandstone near Belluno, northern Italy. According to a review of its morphological basis, which consists of associated cranial elements, some ...
Manja Voss   +2 more
doaj   +1 more source

METAXYTHERIUM MEDIUM (MAMMALIA: SIRENIA) FROM UPPER MIOCENE SEDIMENTS OF THE ARENARIA DI PONSANO FORMATION (TUSCANY, ITALY)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2003
Records of Metaxytherium medium (Mammalia: Sirenia) from Tononian (Late Miocene) sediments from che Arenaria di Ponsano Formation (Tuscany, Italy) are described.
GIOVANNI BIANUCCI, WALTER. LANDINI
doaj   +1 more source

Confirmação da relação entre peixes-bois, "hyraxes" e elefantes, por meio do estudo da proteína das lentes dos olhos () [PDF]

open access: yesActa Amazonica, 1980
Resumo As relações filogenéticas entre os membros da super-ordem Paenungulata, os peixes-bois, elefantes e "hyraxes", foram investigadas, utilizando-se a seqüência de análises de aminoácidos da proteína oc A do cristalino da lente dos olhos destes ...
W. W. de Jong, A. Zweers
doaj   +1 more source

Genomic evidence for the parallel regression of melatonin synthesis and signaling pathways in placental mammals [version 2; peer review: 2 approved]

open access: yesOpen Research Europe, 2021
Background: The study of regressive evolution has yielded a wealth of examples where the underlying genes bear molecular signatures of trait degradation, such as pseudogenization or deletion. Typically, it appears that such disrupted genes are limited to
Mark S. Springer   +7 more
doaj   +1 more source

Using osteological measurements to estimate body length in Amazonian manatees [PDF]

open access: yesActa Amazonica
Body length is an important parameter in morphological, ecological and behavioral studies of a species and contributes to the understanding of the body condition of individuals.
Gisele de Castro Maciel VALDEVINO   +2 more
doaj   +2 more sources

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