Results 81 to 90 of about 128,247 (281)

Homogeneity, Flatness and "Large" Extra Dimensions [PDF]

, 2001
We consider a model in which the universe is the direct product of a (3+1)-dimensional Friedmann, Robertson-Walker (FRW) space and a compact hyperbolic manifold (CHM). Standard Model fields are confined to a point in the CHM (i.e. to a brane).
A. D. Linde, A. N. Kolmogorov, C. N. Lockhart, D. J. H. Chung, Dejan Stojkovic, G. D. Starkman, G. F. Ellis, Glenn D. Starkman, H. V. Fagundes, I. Antoniadis, I. Antoniadis, I. Antoniadis, J. A. Peacock, J. D. Lykken, J. R. Gott, K. Dienes, K. Dienes, L. Randall, L. Randall, Mark Trodden, N. Arkani-Hamed, N. Arkani-Hamed, N. J. Cornish, N. Kaloper, O. Heckmann, Ya. G. Sinai   +25 more
core   +2 more sources

Flat building blocks for flat silicene [PDF]

Scientific Reports, 2017
AbstractSilicene is the silicon equivalent of graphene, which is composed of a honeycomb carbon structure with one atom thickness and has attractive characteristics of a perfect two-dimensional π-conjugated sheet. However, unlike flat and highly stable graphene, silicene is relatively sticky and thus unstable due to its puckered or crinkled structure ...
openaire   +2 more sources

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

RIPK4 function interferes with melanoma cell adhesion and metastasis

Molecular Oncology, EarlyView.
RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski, Sławomir Lasota, Ewelina Madej, Anna A. Brożyna, Małgorzata Szczygieł, Agnieszka Harazin‐Lechowska, Jan Czerbniak, Janusz Rys, Jaroslaw Czyz, Agnieszka Wolnicka‐Glubisz   +9 more
wiley   +1 more source

The Hitchin-Witten Connection and Complex Quantum Chern-Simons Theory [PDF]

, 2014
We give a direct calculation of the curvature of the Hitchin connection, in geometric quantization on a symplectic manifold, using only differential geometric techniques.
Andersen, Jørgen Ellegaard, Gammelgaard, Niels Leth   +1 more
core  

Generating Functions for Coherent Intertwiners

, 2012
We study generating functions for the scalar products of SU(2) coherent intertwiners, which can be interpreted as coherent spin network evaluations on a 2-vertex graph. We show that these generating functions are exactly summable for different choices of
Aquilanti V, Aquilanti V, Barrett J W Dowdall R J Fairbairn W J Gomes H Hellmann F Pereira R, Bonzom V, Bonzom V, Bonzom V, Borja E F, Borja E F, Costantino F Marché J, Dowdall R J, Dupuis M, Dupuis M, Dupuis M, Dupuis M Livine E R, Etera R Livine, Freidel L, Freidel L Hnybida J, Garoufalidis S van der Veen R, Girelli F, Labarthe J J, Livine E R, Livine E R Martín-Benito M, Schnetz O, Schwinger J, Valentin Bonzom, Varshalovich D A, Yu L, Yu L   +27 more
core   +1 more source

Conformally Flat Manifolds [PDF]

Proceedings of the National Academy of Sciences, 1972
This note describes some new examples of conformally flat manifolds, as a step toward a classification of such manifolds up to conformal equivalence.
openaire   +2 more sources

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

FEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso, Jaime Hiniesta‐Valero, Alejandra Guerra‐Castellano, Miguel A. De la Rosa, Irene Díaz‐Moreno   +4 more
wiley   +1 more source

Flatness testing over singular bases

, 2013
We show that non-flatness of a morphism f of complex-analytic spaces with a locally irreducible target Y of dimension n manifests in the existence of vertical components in the n-fold fibred power of the pull-back of f to the desingularization of Y.
Adamus, Janusz, Seyedinejad, Hadi
core   +1 more source

Signatures and flatness.

Journal für die reine und angewandte Mathematik (Crelles Journal), 1993
Let \(Y\subset\mathbb{R}^ n\) be a codimension one analytic set, and fix a signature \(\sigma\) on \(\mathbb{R}^ n\backslash Y\) \((\sigma\) associates a \(\text{sign}+1\) or \(-1\) to each connected component of \(\mathbb{R}^ n\backslash Y)\). The signature \(\sigma\) is admissible at \(x\in Y\) when the germ \(\sigma_ x\) is induced by a germ of ...
ACQUISTAPACE, FRANCESCA, BROGLIA, FABRIZIO   +1 more
openaire   +3 more sources