Results 61 to 70 of about 2,681,911 (377)

Self-organization and symmetry breaking in intestinal organoid development

Nature, 2019
Intestinal organoids are complex three-dimensional structures that mimic the cell-type composition and tissue organization of the intestine by recapitulating the self-organizing ability of cell populations derived from a single intestinal stem cell ...
Denise Serra, U. Mayr, Andrea Boni, Ilya Lukonin, M. Rempfler, L. C. Meylan, Michael B. Stadler, Petr Strnad, Panagiotis K. Papasaikas, Annick Waldt, G. Roma, P. Liberali   +11 more
semanticscholar   +1 more source

High-Symmetry Polarization Domains in Low-Symmetry Ferroelectrics

, 2013
We present experimental evidence for hexagonal domain faceting in the ferroelectric polymer PVDF-TrFE films having the lower orthorhombic crystallographic symmetry. This effect can arise from purely electrostatic depolarizing forces.
Gruverman, A., Lukyanchuk, I., Nakajima, T., Okamura, S., Scott, J. F., Sharma, P.   +5 more
core   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Exact Solutions of Generalized Boussinesq-Burgers Equations and (2+1)-Dimensional Davey-Stewartson Equations

Journal of Applied Mathematics, 2012
We study two coupled systems of nonlinear partial differential equations, namely, generalized Boussinesq-Burgers equations and (2+1)-dimensional Davey-Stewartson equations.
Isaiah Elvis Mhlanga, Chaudry Masood Khalique   +1 more
doaj   +1 more source

A (3+1)-dimensional generalized BKP-Boussinesq equation: Lie group approach

Results in Physics, 2019
A (3+1)-D generalized B-type KP-Boussinesq equation, which was recently formulated in the literature, is investigated here from Lie group standpoint. A solution is obtained by Lie symmetry reductions and direct integration in terms of incomplete elliptic
Chaudry Masood Khalique, Letlhogonolo Daddy Moleleki   +1 more
doaj   +1 more source

Symmetry matters [PDF]

New Phytologist, 2015
SummaryThe development of multicellular organisms depends on correct establishment of symmetry both at the whole‐body scale and within individual tissues and organs. Setting up planes of symmetry must rely on communication between cells that are located at a distance from each other within the organism, presumably via mobile morphogenic signals ...
Laila, Moubayidin, Lars, Østergaard
openaire   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

A study of the generalized nonlinear advection-diffusion equation arising in engineering sciences

Alexandria Engineering Journal, 2022
In this work, we examine a nonlinear partial differential equation of fluid mechanics, namely, the generalized nonlinear advection–diffusion equation, which portrays the motion of buoyancy driven plume in a bent-on porous medium. Firstly, we classify all
Oke Davies Adeyemo, Tanki Motsepa, Chaudry Masood Khalique   +2 more
doaj   +1 more source

Continuous symmetry of C60 fullerene and its derivatives

, 2010
Conventionally, the Ih symmetry of fullerene C60 is accepted which is supported by numerous calculations. However, this conclusion results from the consideration of the molecule electron system, of its odd electrons in particular, in a close-shell ...
Adams W. H., Alikhanidi S., Alikhanidi S., Alvarez S., Avnir D., Avnir D., B. S. Razbirin, Benard M., Bochvar D. A., Broude V. L., Chang A. H. H., Čižek J., D. K. Nelson, Davidson E. R., Davidson R. A., E. F. Sheka, Ellis D. E., Elser V., Ermer O., Estrada E., Fowler P., Grimm S., Haddon R. C., Haddon R. C., Hay P. J., Hedberg K., Hedberg L., Hirsh A., Hirsh A., Hirsh A., Horoyski P. J., Jones D. E. H., Katzenelson O., Keinan S., Koutecky J. J., Kroto H., Krygowski T. M., Leclercq F., Lee B. X., Lee B. X., Löwdin P. O., Löwdin P.-O., Nagase S., Noodleman L., Noodleman L., Orlandi G., Osadko I. S., Osawa E., Overhauser A. W., Paldus J., Petitjean M., Pinsky M., Pinsky M., Razbirin B. S., Razbirin B. S., Rohlfing E. A., Sadoc I., Schleyer P. v. R., Sheka E. F., Sheka E. F., Sheka E. F., Sheka E. F., Sheka E. F., Sheka E. F., Sheka E. F., Sheka E. F., Sheka E. F., Sheka E. F., Sheka E. F., Shpol’skii E. V., Slanina Z., Slater J. C., Slovokhotov Yu. L., Stankevich I. V., Staroverov V. N., Taylor R., Touless D. J., Tratch S. S., Wang X.-B., Weaver J. H., Weaver J. H., Wiberg K. B., Yanonni C. S., Yoshida Z., Zabrodsky H., Zabrodsky H., Zabrodsky H., Zayets V. A.   +87 more
core   +1 more source

Symmetry TFT for subsystem symmetry

Journal of High Energy Physics
Abstract We generalize the idea of symmetry topological field theory (SymTFT) for subsystem symmetry. We propose the 2-foliated BF theory with level N in (3 + 1)d as subsystem SymTFT for subsystem ℤ N symmetry in (2 + 1)d. Focusing on N = 2, we investigate various topological boundaries.
Weiguang Cao, Qiang Jia
openaire   +4 more sources