Results 141 to 150 of about 15,544,554 (381)

Compactifications of F-Theory on Calabi-Yau Fourfolds [PDF]

open access: yesarXiv, 1998
The enhanced gauge groups in F-theory compactified on elliptic Calabi-Yau fourfolds are investigated in terms of toric geometry.
arxiv  

KRAS and GNAS mutations in cell‐free DNA and in circulating epithelial cells in patients with intraductal papillary mucinous neoplasms—an observational pilot study

open access: yesMolecular Oncology, EarlyView.
This study demonstrates that KRAS and GNAS mutations are more prevalent in patients with resected intraductal papillary mucinous neoplasms (IPMN) compared to those under clinical surveillance. GNAS mutations significantly differ between the two patient cohorts, indicating that their absence may serve as a potential biomarker to support conservative ...
Christine Nitschke   +12 more
wiley   +1 more source

Orders of vanishing and U(1) charges in F-theory

open access: yesJournal of High Energy Physics, 2022
Many interesting questions about F-theory models, including several concerning the F-theory swampland, involve massless matter charged under U(1) gauge symmetries. It is therefore important to better understand the geometric properties of F-theory models
Nikhil Raghuram, Andrew P. Turner
doaj   +1 more source

On‐treatment dynamics of circulating extracellular vesicles in the first‐line setting of patients with advanced non‐small cell lung cancer: the LEXOVE prospective study

open access: yesMolecular Oncology, EarlyView.
The LEXOVE prospective study evaluated plasma cell‐free extracellular vesicle (cfEV) dynamics using Bradford assay and dynamic light scattering in metastatic non‐small cell lung cancer patients undergoing first‐line treatments, correlating a ∆cfEV < 20% with improved median progression‐free survival in responders versus non‐responders.
Valerio Gristina   +17 more
wiley   +1 more source

General U(1)×U(1) F-theory compactifications and beyond: geometry of unHiggsings and novel matter structure [PDF]

open access: yes, 2015
A bstractWe construct the general form of an F-theory compactification with two U(1) factors based on a general elliptically fibered Calabi-Yau manifold with Mordell-Weil group of rank two.
M. Cvetič   +3 more
semanticscholar   +1 more source

Algebraic description of G‐flux in F‐theory: new techniques for F‐theory phenomenology [PDF]

open access: yesFortschritte der Physik, 2012
AbstractWe give a global algebraic description of the four‐form flux in F‐theory. We present how to compute its D3‐tadpole and how to calculate the number of four‐dimensional chiral states at the intersection of 7‐branes directly in F‐theory. We check that, in the weak coupling limit, we obtain the same results as using perturbative type IIB string ...
Roberto Valandro   +3 more
openaire   +4 more sources

Neutrino mass textures from F-theory

open access: yes, 2013
Experimental data on the neutrino mixing and masses strongly suggest an underlying approximate symmetry of the relevant Yukawa superpotential terms. Intensive phenomenological explorations during the last decade indicate that permutation symmetries such ...
Antoniadis, I., Leontaris, G. K.
core   +1 more source

Targeting rapid TKI‐induced AXL upregulation overcomes adaptive ERK reactivation and exerts antileukemic effects in FLT3/ITD acute myeloid leukemia

open access: yesMolecular Oncology, EarlyView.
Adaptive ERK reactivation hinders FLT3 tyrosine kinase inhibitor (TKI) treatment in FLT3/ITD acute myeloid leukemia. Here, we report that FLT3 TKI treatment rapidly induces AXL expression and upregulation that is temporally associated with the adaptive ERK reactivation.
Tessa S. Seale   +9 more
wiley   +1 more source

Electromagnetic Near-Field Inhomogeneity Reduction for Image Acquisition Optimization in High-Resolution Multi-Channel Magnetic Resonance Imaging (MRI) Systems

open access: yesIEEE Access, 2017
This paper is a study of the inhomogeneity reduction for near-field acquisition in high-resolution magnetic resonance imaging (MRI) systems. The acquisition homogeneity in MRI imaging modality is an open issue concerning the optimal MRI image generation ...
Pablo Padilla   +3 more
doaj   +1 more source

Three-family particle physics models from global F-theory compactifications [PDF]

open access: yes, 2015
A bstractWe construct four-dimensional, globally consistent F-theory models with three chiral generations, whose gauge group and matter representations coincide with those of the Minimal Supersymmetric Standard Model, the Pati-Salam Model and the ...
M. Cvetič   +4 more
semanticscholar   +1 more source

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