Results 61 to 70 of about 5,279,442 (297)

Paclitaxel induces NM2‐dependent cellular contraction through GEF‐H1 dissociation from microtubules and RhoA/ROCK activation in cancer cells

open access: yesMolecular Oncology, EarlyView.
Taxanes are widely used chemotherapeutics whose effects on cellular mechanics remain poorly understood. We show that paclitaxel induces rapid cellular contraction by promoting GEF‐H1 dissociation from microtubules and non‐muscle myosin II activation through RhoA/ROCK.
Gloria Asensio‐Juárez   +5 more
wiley   +1 more source

Dynamical state of four open clusters

open access: yesAstronomy & Astrophysics
Context. Open clusters are vital laboratories for studying stellar dynamics and evolution, with mass segregation – the preferential concentration of massive stars toward cluster cores – serving as a key indicator of internal dynamical processes.
Wang Shoucheng   +4 more
doaj   +1 more source

The Effect of Superpositions on the Planetary Nebula Luminosity Function

open access: yesThe Astrophysical Journal, 2023
Planetary nebula (PN) surveys in systems beyond ∼10 Mpc often find high-excitation, point-like sources with [O iii ] λ 5007 fluxes greater than the apparent bright-end cutoff of the planetary nebula luminosity function (PNLF).
Owen Chase   +3 more
doaj   +1 more source

The Luminosity Function of ω Centauri

open access: yesThe Astronomical Journal, 1999
Deep HST-WFPC2 observations of the stellar population in the globular cluster Omega Cen (NGC 5139) have been used to measure the luminosity function of main sequence stars at the low-mass end. Two fields have been investigated, located respectively ~4.6' and ~7' away from the cluster center, or near the half-light radius of this cluster (~4.8').
openaire   +2 more sources

Clustering and redshift-space distortions in QSO and galaxy surveys [PDF]

open access: yes, 2006
In this thesis, we exploit the potential of existing QSO and galaxy surveys for investigating the nature of the large scale structure in the Universe. A detailed analysis of clustering and redshift- space distortions allows us to constrain cosmological ...
Cruz da Angela, José Antonio   +1 more
core  

The Luminosity Function of Individually Undetectable Stars

open access: yes, 1997
. A method is presented to derive the faint end of the stellar luminosity function in crowded fields. The method assumes that two images that look similar, have similar luminosity functions.
R. C. Snel, Snel Lund
core   +2 more sources

New model for calculation the radius of comet’s nucleus [PDF]

open access: yesE3S Web of Conferences
In this work, a new equation derived to obtain some physical properties like radius and luminosity of comets using distances between the comet, the Earth and the Sun that represent the geocentric distance and heliocentric distance at applying it to a ...
Mohammed Abd-AL Hamza Mariam   +1 more
doaj   +1 more source

Automated FRAP microscopy for high‐throughput analysis of protein dynamics in chromatin organization and transcription

open access: yesFEBS Open Bio, EarlyView.
RoboMic is an automated confocal microscopy pipeline for high‐throughput functional imaging in living cells. Demonstrated with fluorescence recovery after photobleaching (FRAP), it integrates AI‐driven nuclear segmentation, ROI selection, bleaching, and analysis.
Selçuk Yavuz   +6 more
wiley   +1 more source

Luminosity Function of Galaxies in Voids: A Modification Inspired by Excursion Set Theory

open access: yesThe Astrophysical Journal
In the standard picture of cosmology, the galaxies reside in dark matter (DM) halos. DM halos are distributed in the cosmic web in different environments.
Zeynab Ashurikisomi, Shant Baghram
doaj   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

open access: yesFEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli   +8 more
wiley   +1 more source

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