Results 51 to 60 of about 898,395 (346)

SOHO/SUMER observations of prominence oscillation before eruption [PDF]

open access: yes, 2008
Context. Coronal mass ejections (CMEs), as a large-scale eruptive phenomenon, often reveal some precursors in the initiation phase, e.g., X-ray brightening, filament darkening, etc., which are useful for CME modelling and space weather forecasting. Aims.
P. Chen, D. Innes, S. Solanki
semanticscholar   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

EXPLORING ALGEBRAIC ANALYSIS: DEFINITIONS, INTERPRETATIONS, AND METHODOLOGIES

open access: yesCifra: Информационные технологии и телекоммуникации
For further than 200 times, the word algebraic analysis has been used to relate to a variety of motifs and methodologies. These connotations are still present moment.
Altaher A.   +3 more
doaj   +1 more source

GRET and SIGH in the QURANIC expression Semantic study

open access: yesمجلة اداب ذي قار, 2022
Regret, bemoan and feeling sorry are overlapping terms. Regret in the language means remorse and it has other meanings, including feeling sorry, sadness, and repentance. As for bemoan, it is the most severe case of regret for what a person has missed of
م. د . خالد خضير عباس
doaj   +1 more source

A new approach to analyzing solar coronal spectra and updated collisional ionization equilibrium calculations. II. Additional ionization rate coefficients

open access: yes, 2008
We have reanalyzed SUMER observations of a parcel of coronal gas using new collisional ionization equilibrium (CIE) calculations. These improved CIE fractional abundances were calculated using state-of-the-art electron-ion recombination data for K-shell,
Arnaud   +30 more
core   +1 more source

Determination of the Coronal Magnetic Field from Hot-Loop Oscillations Observed by SUMER and SXT [PDF]

open access: yes, 2006
We apply a new method to determine the magnetic field in coronal loops, using observations of coronal loop oscillations. We analyze seven Doppler-shift oscillation events detected by SUMER in the hot flare line Fe XIX to obtain the oscillation periods of
Tongjiang Wang, D. Innes, J. Qiu
semanticscholar   +1 more source

Inhibiting stearoyl‐CoA desaturase suppresses bone metastatic prostate cancer by modulating cellular stress, mTOR signaling, and DNA damage response

open access: yesFEBS Letters, EarlyView.
Bone metastasis in prostate cancer (PCa) patients is a clinical hurdle due to the poor understanding of the supportive bone microenvironment. Here, we identify stearoyl‐CoA desaturase (SCD) as a tumor‐promoting enzyme and potential therapeutic target in bone metastatic PCa.
Alexis Wilson   +7 more
wiley   +1 more source

Large N asymptotics of orthogonal polynomials, from integrability to algebraic geometry [PDF]

open access: yes, 2005
In this short lecture, we compute asymptotics of orthogonal polynomials, from a saddle point approximation. This is an example of a calculation which shows the link between integrability, algebraic geometry and random matrices.Comment: Proceedings Les ...
Eynard, Bertrand
core   +3 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Stability analysis of Hub dam under rapid drawdown

open access: yesOpen Engineering
The purpose of this study was to calculate the Hub dam’s slope stability analysis in a rapid drawdown scenario. Using the slide software, we compared four distinct analytic techniques – the Bishop, Janbu, ordinary way of slicing, and Morgenstern-Price ...
Salman Mohammed Mohsin   +2 more
doaj   +1 more source

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