Results 91 to 100 of about 1,356,633 (296)

Compactifying String Topology [PDF]

, 2011
We study the string topology of a closed oriented Riemannian manifold M. We describe a compact moduli space of diagrams, and show how the cellular chain complex of this space gives algebraic operations on the singular chains of the free loop space LM of ...
Poirier, Kate, Rounds, Nathaniel
core  

The Hilbert space of Chern-Simons theory on the cylinder. A Loop Quantum Gravity approach

, 2009
As a laboratory for loop quantum gravity, we consider the canonical quantization of the three-dimensional Chern-Simons theory on a noncompact space with the topology of a cylinder.
Ashtekar A, Barut A O, Clisthenis P Constantinidis, de la Madrid R, Dirac P A M, Dirac P A M, Gabriel Luchini, Gel'fand I M, Henneaux M, Manuel Garcia Islas J, Matschull H J, Noui K, Olivier Piguet, Perez A, Rovelli C, Schwartz L, Thiemann T   +16 more
core   +2 more sources

Small loop spaces

Topology and its Applications, 2010
The notion of small loops arises in covering spaces as an obstruction to being semi-locally simply connected, cf. [\textit{N. Brodskiy} et al., Houston J. Math. 39, No. 2, 667--699 (2013; Zbl 1278.55024)] and Fundam. Math. 218, No. 1, 13--46 (2012; Zbl 1260.55013)].
openaire   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

Digital twin for in – space manufacturing: a comprehensive review from framework to future

Virtual and Physical Prototyping
Digital Twin (DT) provides a pivotal solution to space manufacturing bottlenecks through high-fidelity simulation and closed-loop control. This paper systematically reviews DT for space manufacturing.
Lei Wang, Yuhang Jiang, Jialong Zhu, Kunyang Lin, Xiaofei Ma, Jiankang He, Bingheng Lu   +6 more
doaj   +1 more source

Investigation of Costas Loop Synchronization Effect on BER Performance of Space Uplink Optical Communication System With BPSK Scheme

IEEE Photonics Journal, 2015
The Costas loop is the key technique of synchronous demodulation in the next generation of satellite optical communication systems. To better understand the Costas loop, the relationship between phase deviation of the Costas loop and bit error rate (BER)
Mi Li, Bowen Li, Yuejiang Song, Xuping Zhang, Lingqian Chang, Jia Liu   +5 more
doaj   +1 more source

Automated FRAP microscopy for high‐throughput analysis of protein dynamics in chromatin organization and transcription

FEBS Open Bio, EarlyView.
RoboMic is an automated confocal microscopy pipeline for high‐throughput functional imaging in living cells. Demonstrated with fluorescence recovery after photobleaching (FRAP), it integrates AI‐driven nuclear segmentation, ROI selection, bleaching, and analysis.
Selçuk Yavuz, Bart Geverts, Johan A. Slotman, Andrea Sacchetti, Stefan Prekovic, Martin E. van Royen, Adriaan B. Houtsmuller   +6 more
wiley   +1 more source

1-loop amplitudes from the Halohedron

Journal of High Energy Physics, 2019
We recently proposed the Halohedron to be the 1-loop Amplituhedron for planar 𝜙3 theory. Here we prove this claim by showing how it is possible to extract the integrand for the partial amplitude m n 1 $$ {m}_n^1 $$ (l, ..., n|1, ...
Giulio Salvatori
doaj   +1 more source

Causal loop quantum cosmology in momentum space

, 2008
We shall show that it is possible to make a causal interpretation of loop quantum cosmology using the momentum as the dynamical variable. We shall show that one can derive Bohmian trajectories.
ALI SHOJAI, de Broglie, FATIMAH SHOJAI, Golshani M., Shojai F.   +4 more
core   +1 more source

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source