Results 51 to 60 of about 300,769 (347)

Impact of the extinct megaherbivore Steller's sea cow (Hydrodamalis gigas) on kelp forest resilience

Frontiers in Ecology and Evolution, 2022
Giant kelp forests off the west coast of North America are maintained primarily by sea otter (Enhydra lutris) and sunflower sea star (Pycnopodia helianthoides) predation of sea urchins.
Peter D. Roopnarine, Peter D. Roopnarine, Roxanne M. W. Banker, Roxanne M. W. Banker, Scott D. Sampson   +4 more
doaj   +1 more source

Potential therapeutic targeting of BKCa channels in glioblastoma treatment

Molecular Oncology, EarlyView.
This review summarizes current insights into the role of BKCa and mitoBKCa channels in glioblastoma biology, their potential classification as oncochannels, and the emerging pharmacological strategies targeting these channels, emphasizing the translational challenges in developing BKCa‐directed therapies for glioblastoma treatment.
Kamila Maliszewska‐Olejniczak, Karolina Pytlak, Sandra Jaworowska, Bogusz Kulawiak, Piotr Bednarczyk   +4 more
wiley   +1 more source

Symbiotic Stars (Including T Corona Borealis) Are Not Immediate Progenitors of Normal Type Ia Supernovae

The Astrophysical Journal
A popular solution to the Type Ia supernova (SN Ia) progenitor problem is that the immediate progenitors are symbiotic star systems. This solution requires that the companion star of the exploding white dwarf must be a red giant star with a heavy stellar
Bradley E. Schaefer
doaj   +1 more source

Kepler-91b: a planet at the end of its life. Planet and giant host star properties via light-curve variations

, 2013
The evolution of planetary systems is intimately linked to the evolution of their host star. Our understanding of the whole planetary evolution process is based on the large planet diversity observed so far.
Barbieri, M., Barrado, D., Bayo, A., Bouy, H., Henning, T., Lillo-Box, J., Mancini, L., Montalbán, J., Montesinos, B., Moya, A., Régulo, C.   +10 more
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Hydrodynamics and Survivability during Post-main-sequence Planetary Engulfment

The Astrophysical Journal, 2023
The engulfment of substellar bodies (SBs), such as brown dwarfs and planets, by giant stars is a possible explanation for rapidly rotating giants, lithium-rich giants, and the presence of SBs in close orbits around subdwarfs and white dwarfs.
Ricardo Yarza, Naela B. Razo-López, Ariadna Murguia-Berthier, Rosa Wallace Everson, Andrea Antoni, Morgan MacLeod, Melinda Soares-Furtado, Dongwook Lee, Enrico Ramirez-Ruiz   +8 more
doaj   +1 more source

Photometric survey of the red giant V449 Cygni over half a century (1974 to 2022). A semi-regular variable star with a period of ~54 days [PDF]

, 2022
Guy Boistel
openalex   +1 more source

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source

Mass transfer from a giant star to a main sequence companion and its contribution to long-orbital-period blue stragglers

, 2008
Binary population synthesis shows that mass transfer from a giant star to a main-sequence (MS) companion may account for some observed long-orbital period blue stragglers.
Ahumada, Ahumada, Alexander, Andronov, Beer, Bloecker, Bonai Marinovi, Bonatto, Carraro, Caughlan, Caughlan, Chen, Chen, Chen, Davies, De Macro, Eggleton, Eggleton, Eggleton, Eggleton, Eggleton, Fan, Ferraro, Friel, Han, Han, Han, Han, Han, Hjellming, Hobbs, Hurley, Hurley, Hurley, Hurley, Iben, Iglesias, Itoh, Itoh, Janes, Kippenhahn, Latham, Leonard, Mapelli, Mateo, Mazeh, McCrea, Miller, Milone, Paczynski, Podsiadlowski, Podsiadlowski, Pols, Pols, Pols, Reimers, Renzini, Sandquist, Schrder, Scott, Soberman, Stryker, Tom, Tout, VandenBerg, Webbink, Williams, Xin, Xuefei Chen, Zhanwen Han   +69 more
core   +1 more source

Lithium in Giant Stars [PDF]

Symposium - International Astronomical Union, 2000
Lithium continues to be a surprising element and more than ever the study of its creation, destruction and distribution is giving us tools to understand, not only the chemical evolution of this element, but also the nature of mass loss of evolved giants and nucleosynthesis of other elements in cases of very low-metal giants.
openaire   +1 more source