Results 41 to 50 of about 2,111 (247)
Molecular Oncology, EarlyView.Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau +36 more
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Tipsy pulsation of classical Cepheids – lessons from space photometry
EPJ Web of Conferences, 2015 Space photometric data of the Kepler Cepheid, V1154 Cygni, and those of SZ Tauri (MOST photometry) indicate that classical Cepheids are not strictly regular pulsators.
Szabados L. +4 more
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On the question of multimode stellar pulsations [PDF]
Monthly Notices of the Royal Astronomical Society, 1986 Des observations recentes de cepheides, et naines blanches peuvent etre interpretees par la presence de jusqu'a cinq frequences reliees irrationnellement dans le spectre de puissance de leurs courbes de lumiere. A l'aide de modeles qualitatifs, on montre qu'un tel mouvement quasi periodique peut en fait se produire dans des regimes dissipatifs et non ...
R. K. Tavakol, M. K. Das
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Molecular Oncology, EarlyView.We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu +10 more
wiley +1 more source
EPJ Web of Conferences, 2017 Over the recent years, the Petersen diagram for classical pulsators, Cepheids and RR Lyr stars, populated with a few hundreds of new multiperiodic variables. We review our analyses of the OGLE data, which resulted in a significant extension of the known,
Smolec Radoslaw +6 more
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The history and development of nonlinear stellar pulsation codes [PDF]
, 1987 This review is limited to the history and development of nonlinear stellar pulsation codes and methods. The narrative includes examples of practical interest in the application of these numerical methods to problems in stellar pulsation such as Cepheid ...
Davis, C.G.
core
The critical frequency in the Stellar pulsation theory [PDF]
Space Science Reviews, 1980 AbstractThe standing oscillation in an isothermal semi-infinite plane-parallel atmosphere has a critical frequency. The significance of critical frequency in the stellar pulsation is discussed briefly. The critical period is calculated for the cepheid instability strip.
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Molecular Oncology, EarlyView.We identify USP29 as the only DUB mirroring CA9 expression, a marker of hypoxia and HIF pathway activation associated with PCA aggressiveness. USP29 stabilizes HIF‐1α and HIF‐2α via a noncanonical mechanism that is independent of PHD/pVHL activity yet relies on proteasomal regulation, establishing USP29 as a previously unrecognized regulator of hypoxic
Amelie S Schober +16 more
wiley +1 more source
Starspot Activity without Pulsation in the Binary System KIC 5444392 Revisited
, 2023 We revisited the short-period (∼1.5 days) binary system KIC 5444392, which shows quasi-period modulated light variations. Previous studies indicated that these variations might be caused by stellar pulsations.
Jiaxing Wang +3 more
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Bifurcation in Hydrodynamic Models of Stellar Pulsation [PDF]
International Astronomical Union Colloquium, 1993 AbstractPhenomena of bifurcation in hydrodynamic stellar models of radial pulsation are reviewed. By changing control parameters of models, we can see qualitatively different pulsation behaviors in hydrodynamic models with transitions due to various types of bifurcation.In weakly dissipative models (classical Cepheids).
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