Results 111 to 120 of about 3,456,047 (292)

Fundamental-group connections and composite clothing for hypercentered planes family in projective space

Дифференциальная геометрия многообразий фигур, 2018
The article deals with hypercentered planes family in projective space. It is proved that the curvature object for the fundamental-group connection in the principal bundle associated with the family is a tensor.
K. Bashashina
doaj  

Study on Ecosystem Service Trade-Offs and Synergies in the Guangdong–Hong Kong–Macao Greater Bay Area Based on Ecosystem Service Bundles

Land
In-depth research on the spatial and temporal evolution of ecosystem service trade-offs and synergistic relationships, scientific identification of ecosystem service bundles, and the main factors affecting the spatial differentiation of ecosystem service
Hui Li, Qing Xu, Huiyi Qiu, Jiaheng Du, Zhenzhou Xu, Longying Liu, Zixiu Zhao, Zixin Zhu, Yun He   +8 more
doaj   +1 more source

Principal Bundles, Connections and BRST Cohomology

, 1994
31 pages ...
García-Compeán, H., López-Romero, J. M., Rodríguez-Segura, M. A., Socolovsky, M.   +3 more
openaire   +2 more sources

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

FEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain, Elise Buret, Le Hoang Thanh Nguyen, Marion Cocheteux, Nicolas Touya, Mélanie Dhayer, Romain Dubois, Frank Lafont, Sebastien Janel, Patrice Maboudou, Steve Lancel, Philippe Marchetti   +11 more
wiley   +1 more source

Quantum and electrostatic models of Chebyshev polynomials of type IV

Demonstratio Mathematica
In this work, we study the Chebyshev polynomials of the fourth kind as solutions of a singular Sturm–Liouville problem and establish their differential, orthogonality, and extremal properties. We derive a Rodrigues-type formula and a generating function,
Toribio-Milane Juan, Renato-Ortiz Junior, Rosario-Roche Pablo A.   +2 more
doaj   +1 more source

Cohomological Structure of Principal SO(3)-Bundles over Real Curves with Applications to Robot Orientation Control

Mathematics
This paper provides advances in the study of principal SO(3)-bundles over smooth projective real curves, with applications to robot manipulation orientation.
Álvaro Antón-Sancho
doaj   +1 more source

A Discrete Theory of Connections on Principal Bundles

, 2005
Connections on principal bundles play a fundamental role in expressing the equations of motion for mechanical systems with symmetry in an intrinsic fashion. A discrete theory of connections on principal bundles is constructed by introducing the discrete analogue of the Atiyah sequence, with a connection corresponding to the choice of a splitting of the
Leok, Melvin, Marsden, Jerrold E, Weinstein, Alan D   +2 more
openaire   +3 more sources

Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank

FEBS Open Bio, EarlyView.
Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer, Pawel Rubach, Zbigniew Dauter, Wojciech Dec, Dariusz Brzezinski, Marta Kulik, Wladek Minor, Mariusz Jaskolski   +7 more
wiley   +1 more source

On principal fibre bundle of the Cartesian product manifold

, 2013
Differentiable principal fibre bundle have been defined and studied by Kobayashi and Nomizu [3] and many other geometers. In this paper, we study structures in the principal fibre bundle. Hexalinear frame bundle is also studied and it has been shown that
Bajpai, Anmita, Nivas, Ram
core   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source