Results 1 to 10 of about 51,828 (251)

The Establishment of Asian Black Bear (Ursus thibetanus) Fibroblast Cell Line [PDF]

open access: yesAnimals
The Asian black bear (Ursus thibetanus, UT), a Class II protected species in China, presents significant challenges for dermatological research due to limited availability of skin specimens and technical difficulties in fibroblast isolation.
Yujuan Hu   +4 more
doaj   +2 more sources

Clarification of the status of Paraferreola Šustera, 1912 as an available genus name in Pompilidae, and the identity of Sphex ursus Fabricius, 1793 in Mutillidae (Hymenoptera) [PDF]

open access: yesJournal of Hymenoptera Research, 2022
The usage of Paraferreola Šustera, 1912 since its proposal as a genus of spider wasps, but based on a misidentified type species (Sphex ursus Fabricius, 1793, actually a species of Mutillidae), shows that it continues to be applied (although infrequently)
Denis J. Brothers   +2 more
doaj   +3 more sources

Optimization of Energy Management in a City Bus Powered by the Hydrogen Fuel Cells

open access: yesCommunications, 2021
The article describes the design and optimization of operation of an electric bus  powered  by  the  hydrogen  fuel  cells.  At  the  beginning,  an  approach  to  design  of  a  12-meter  urban  bus,  powered  by  hydrogen,  is  presented,  as  well  as 
Arkadiusz Małek   +3 more
doaj   +1 more source

Changes in the milk metabolome of the Giant Panda (Ailuropoda melanoleuca) with time after birth: three phases in early lactation and progressive individual differences [PDF]

open access: yes, 2015
Ursids (bears) in general, and giant pandas in particular, are highly altricial at birth. The components of bear milks and their changes with time may be uniquely adapted to nourish relatively immature neonates, protect them from pathogens, and support ...
Hou, Rong   +8 more
core   +13 more sources

Members of the family Ursidae in the Museum of Nature of Kharkiv University and their craniological features [PDF]

open access: yesTheriologia Ukrainica, 2019
The exhibition and scientific collection of the Museum of Nature currently deposit 16 specimens of the family Ursidae (bears), which belong to three species and 6 subspecies.
Yuriy Iliukhin
doaj   +1 more source

DNA, spectroscopic and geochemical analyses of bone fragments and associated speleothems in Postojna cave, Slovenia

open access: yesActa Carsologica, 2020
a loose/broken stalagmite containing small fragments of cemented bones were collected from the Postojna Cave to investigate whether deoxyribonucleic acid (DNA) can be determined.
Matej Lipar   +6 more
doaj   +1 more source

Changes in the distribution of nesting Arctic seaducks are not strongly related to variation in polar bear presence

open access: yesArctic Science, 2020
Contemporary climate change is predicted to expose some species to altered predation regimes. Losses of Arctic sea ice are causing polar bears to increasingly forage on colonial seaduck eggs in lieu of ice-based hunting of marine mammals.
Cody J. Dey   +3 more
doaj   +1 more source

Dietary ecology of the extinct cave bear: Evidence of omnivory as inferred from dental microwear textures [PDF]

open access: yesActa Palaeontologica Polonica, 2016
The diet of the extinct European cave bear, Ursus spelaeus, has widely been debated. Diverging from the extant brown bear (Ursus arctos) approximately 1.2 million years ago, the cave bear is one of the most ubiquitous fossil bears occurring in Europe ...
D. Brent Jones, Larisa R.G. DeSantis
doaj   +1 more source

Hydrochemical properties of springs Slatinski Izvor and Solenica (Republic of Macedonia)

open access: yesActa Carsologica, 2015
Hydrochemical properties of water samples from the Slatinski Izvor spring and Solenica spring were analyzed during the period between December 2011 – November 2013. The wider area around the springs belongs to two tectonic units.
Biljana Gichevski   +3 more
doaj   +1 more source

Respect for Grizzly Bears: An Aboriginal Approach for Co-existence and Resilience [PDF]

open access: yes, 2009
Aboriginal peoples’ respect for grizzly bear (Ursus arctos) is widely acknowledged, but rarely explored, in wildlife management discourse in northern Canada.
Clarke, Douglas A., Slocombe, D. Scott
core   +3 more sources

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