Results 151 to 160 of about 1,368,154 (362)

Spinfoam 2d quantum gravity and discrete bundles

, 2004
In 4 dimensions, general relativity can be formulated as a constrained $BF$ theory; we show that the same is true in 2 dimensions. We describe a spinfoam quantization of this constrained BF-formulation of 2d riemannian general relativity, obtained using ...
Oriti, Daniele, Rovelli, Carlo, Speziale, Simone   +2 more
core   +2 more sources

QUANTUM RINGS AND RECURSION RELATIONS IN 2D QUANTUM GRAVITY [PDF]

, 1992
Shamit Kachru
openalex   +1 more source

BRST cohomology for 2D gravity

, 1995
The BRST cohomology group in the space of local functionals of the fields for the two-dimensional conformally invariant gravity is calculated. All classical local actions (ghost number equal to zero) and all candidate anomalies are given and discussed for our model.
Blaga, Paul A., Tataru, L., Vancea, Ion V.   +2 more
openaire   +2 more sources

Decellularized Extracellular Matrix Scaffolds to Engineer the Dormant Landscape of Microscopic Colorectal Cancer Liver Metastasis

Advanced Healthcare Materials, EarlyView.
Decellularized liver extracellular matrix scaffolds provide a platform to study dormant liver‐metastatic colorectal cancer. They induce reversible dormancy, in combination with nutrient depletion and low dose chemotherapy, through cell cycle arrest and chemotherapy resistance.
Sabrina N. VandenHeuvel, Lucia L. Nash, Abigail J. Clevenger, Claudia A. Collier, Oscar R. Benavides, Sanjana Roy, Brinlee Goggans, Aelita Salikhova, Anvitha Tharakesh, Svasti Haricharan, Amber N. Stratman, Scott Kopetz, Alex J. Walsh, Shreya A. Raghavan   +13 more
wiley   +1 more source

Solving topological 2D quantum gravity using Ward identities [PDF]

, 1993
David Montano, G. Rivlis
openalex   +1 more source

Hamiltonian Approach to 2D Dilaton-Gravities and Invariant Adm Mass

, 1993
The formula existing in the literature for the ADM mass of 2D dilaton gravity is incomplete. For example, in the case of an infalling matter shockwave this formula fails to give a time-independent mass, unless a very special coordinate system is chosen ...
A. Bilal, A. Chamseddine, A. Chamseddine, Adel Bilal, C. Callan, C. W. Misner, E. Witten, Ian I. Kogan, J. Russo, J. Russo, L. Susskind, R. L. Arnowitt, S. de Alwis, S. de Alwis, T. Regge, Y. Park   +15 more
core   +1 more source

Controlling Intestinal Organoid Polarity using Synthetic Dynamic Hydrogels Decorated with Laminin‐Derived IKVAV Peptides

Advanced Healthcare Materials, EarlyView.
Design rules are presented to control intestinal organoid polarity in fully synthetic hydrogels. The laminin‐derived IKVAV sequence is crucial to obtain correct intestinal organoid polarity. Increasing hydrogel dynamics further supports the growth of correctly polarized intestinal organoids, while a bulk level of stiffness (G’ ≈ 0.7 kPa) is crucial to ...
Laura Rijns, Joost A. P. M. Wijnakker, Victor A. Veenbrink, Riccardo Bellan, Fenna W. B. Craenmehr, Simone I. S. Hendrikse, Johnick F. van Sprang, Wim de Lau, E. W. Meijer, Hans Clevers, Patricia Y. W. Dankers   +10 more
wiley   +1 more source

Microscopically Adaptable Bioink Guide Cell Compartmentalization toward Morphogenesis of a Functional Vasculature‐Like System

Advanced Healthcare Materials, EarlyView.
Contractile vasculatures are fabricated through a one‐step bioprinting strategy. The adaptable microenvironment provided by ECM‐mimicking bioink triggers cell sorting and compartmentalization of endothelial cells and vascular smooth muscle cells toward a histological configuration by focal adhesion kinase‐mediated upregulation of cell adhesion and ...
Jun Chen, Yuqiong Wu, Jiarong Huang, Junjin Jie, Chan Huang, Di Zhang, Yuxin Huang, Rui Mao, Ming Zhao, Lin‐Ping Wu   +9 more
wiley   +1 more source

Rigidity of singularities of 2D gravity water waves [PDF]

Journal of Differential Equations, 2018
S. Agrawal
semanticscholar   +1 more source

Granular Hydrogels as Modular Biomaterials: From Structural Design to Biological Responses

Advanced Healthcare Materials, EarlyView.
Granular hydrogels are now emerging as promising biomaterials due to their inherent microporousity, injectability, and modularity. They have shown improvements in cell viability and migration, cellular/tissue infiltration, host tissue integration, mitigated foreign body response, and tissue regeneration.
Asmasadat Vaziri, Renata Maia, Pei Zhang, Liliana Agresti, Jelmer Sjollema, Mohammad‐Ali Shahbazi, Hélder A. Santos   +6 more
wiley   +1 more source