Results 111 to 120 of about 15,544,554 (381)

Frozen singularities in M and F theory

open access: yes, 2016
A bstractWe revisit the duality between ALE singularities in M-theory and 7-branes on a circle in F-theory. We see that a frozen M-theory singularity maps to a circle compactification involving a rotation of the plane transverse to the 7-brane, showing ...
Y. Tachikawa
semanticscholar   +1 more source

F-theory and 2d (0, 2) theories [PDF]

open access: yes, 2016
A bstractF-theory compactified on singular, elliptically fibered Calabi-Yau five-folds gives rise to two-dimensional gauge theories preserving N = (0, 2) supersymmetry.
Sakura Schäfer-Nameki, T. Weigand
semanticscholar   +1 more source

The Saccharomyces cerevisiae amino acid transporter Lyp1 has a broad substrate spectrum

open access: yesFEBS Letters, EarlyView.
In Saccharomyces cerevisiae, Yeast Amino acid Transporter family members mediate the import of amino acids, ranging from substrate specialists to generalists. Here, we show that the specialist transporter, Lyp1, has a broader substrate spectrum than previously described, with affinity constants spanning from micromolar to millimolar.
Foteini Karapanagioti   +3 more
wiley   +1 more source

E6 Models from F-theory

open access: yes, 2012
F-theory is a non-perturbative formulation of type IIB superstring theory which allows for the decoupling of gravity and for the formulation of GUT theories based on the gauge group E6.
Callaghan, James C., King, Stephen F.
core   +1 more source

The cytoskeletal control of B cell receptor and integrin signaling in normal B cells and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley   +1 more source

F-theory from Dirichlet 3-branes [PDF]

open access: yes, 1996
Starting from the type IIB Dirichlet 3-brane action, we obtain a Nambu-Goto action. It is interpreted as the world volume action of a fundamental 3-brane, and its target space theory as F-theory.
Banks   +41 more
core   +2 more sources

Social context prevents heat hormetic effects against mutagens during fish development

open access: yesFEBS Letters, EarlyView.
This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere   +5 more
wiley   +1 more source

miRNA‐29 regulates epidermal and mesenchymal functions in skin repair

open access: yesFEBS Letters, EarlyView.
miRNA‐29 inhibits cell‐to‐cell and cell‐to‐matrix adhesion by silencing mRNA targets. Adhesion is controlled by complex interactions between many types of molecules coded by mRNAs. This is crucial for keeping together the layers of the skin and for regenerating the skin after wounding.
Lalitha Thiagarajan   +10 more
wiley   +1 more source

Anomalies of (0,4) SCFTs from F-theory

open access: yesJournal of High Energy Physics, 2020
We study the macroscopics of 2d N $$ \mathcal{N} $$ = (0, 4) SCFTs arising from F-theory constructions. The class of 2d SCFTs we consider live on black strings which are obtained by wrapping D3-branes on a curve in the base of a possibly singular ...
Christopher Couzens   +3 more
doaj   +1 more source

F-theory and the Classification of Little Strings [PDF]

open access: yes, 2015
Author(s): Bhardwaj, Lakshya; Del Zotto, Michele; Heckman, Jonathan J; Morrison, David R; Rudelius, Tom; Vafa, Cumrun | Abstract: Little string theories (LSTs) are UV complete non-local 6D theories decoupled from gravity in which there is an intrinsic ...
Lakshya Bhardwaj   +5 more
semanticscholar   +1 more source

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