Results 81 to 90 of about 3,020,795 (297)

A conceptual model for analyzing the stability condition and regime transition in bubble columns

open access: yes, 2010
The abrupt change on the curve of gas holdup vs. superficial gas velocity calculated from the dual-bubble-size (DBS) model was physically interpreted as a shift from the homogeneous and transition regimes to the heterogeneous regime for bubble columns in
Li, Jinghai   +4 more
core   +1 more source

Epigenetic reprogramming of lineage switching in cancer

open access: yesFEBS Letters, EarlyView.
Cancer cells rarely commit to a single identity. Epigenetic mechanisms and tumor microenvironment cues push epithelial cells toward flexible, hybrid states that can shift into mesenchymal, neuroendocrine, or stem‐like fates, driving metastasis, drug resistance, and tumor heterogeneity. Targeting the epigenetic regulators behind these transitions, using
Ezgi Boyvatlı   +4 more
wiley   +1 more source

Autophagy and mitophagy in pancreatic β‐cell homeostasis and their involvement in diabetes pathophysiology

open access: yesFEBS Letters, EarlyView.
This review focuses on the role of autophagy and mitophagy in maintaining pancreatic β‐cell function and homeostasis. We discuss how genetic defects affecting these pathways contribute to the development of type 1, type 2, monogenic, and gestational diabetes. We further explore their potential as therapeutic targets. Created in BioRender.
Yunkyeong Lee   +2 more
wiley   +1 more source

Formulas for Friction Factor in Transitional Regimes [PDF]

open access: yesJournal of Hydraulic Engineering, 2008
This note concerns variations of the friction factor in the two transitional regimes, one between laminar and turbulent flows and the other between fully smooth and fully rough turbulent flows. An interpolation approach is developed to derive a single explicit formula for computing the friction factor in all flow regimes.
openaire   +2 more sources

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

open access: yesFEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source

Experimental study of the brittle–ductile transition in hot cutting of SG iron specimens [PDF]

open access: yes, 2013
http://www.sciencedirect.com/science/article/pii/S0924013612002579The present paper investigates the brittle-ductile transition (BDT) of the primary shear zone during cutting of spheroidal graphite (SG) iron in the austenitization temperature range ...
EL MANSORI, Mohamed   +2 more
core   +1 more source

Kinetic and finite ion mass effects on the transition to relativistic self-induced transparency in laser-driven ion acceleration

open access: yesNew Journal of Physics, 2017
We study kinetic effects responsible for the transition to relativistic self-induced transparency in the interaction of a circularly-polarized laser-pulse with an overdense plasma and their relation to hole-boring (HB) and ion acceleration.
E Siminos   +3 more
doaj   +1 more source

O quê sabemos sobre democratização depois de vinte anos?

open access: yesOpinião Pública, 2001
Este ensaio sintetiza os resultados do grande número de estudos publicados nos últimos vinte anos sobre a democratização ocorrida no final do século XX.
Barbara Geddes
doaj   +1 more source

Analysis of Bridging Formulae in Transitional Regime

open access: yesAIP Conference Proceedings, 2011
The most suitable method to compute aerodynamic forces of a spacecraft, at first stage of a design, relies on bridging formulae. There are two kinds of bridging formulae: global and local. The global formulae rely on knowledge of spacecraft aerodynamic force coefficients in continuum and in free molecular flow.
MORSA, LUIGI   +3 more
openaire   +3 more sources

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