Results 51 to 60 of about 479,657 (292)

Geometrical Lattice models for N=2 supersymmetric theories in two dimensions

, 1991
We introduce in this paper two dimensional lattice models whose continuum limit belongs to the $N=2$ series. The first kind of model is integrable and obtained through a geometrical reformulation, generalizing results known in the $k=1$ case, of the ...
Bagger, Bouchaud, Cvetic, Date, de Gennes, Deguchi, Des Cloizeaux, Di Francesco, Dobrev, Duplantier, Duplantier, Duplantier, Eguchi, Fendley, Flory, Friedan, Gepner, Gepner, H. Saleur, Howe, Jimbo, Kastor, Kastor, Kauffman, Kauffman, Kulish, Lerche, Martinec, Mussardo, Nienhuis, Nienhuis, Parisi, Qiu, Ravanini, Ravanini, Ravanini, Saleur, Saleur, Vafa, Vafa, Villanove, von Gehlen, Wadati, Warner, Wenzl, Witten, Witten, Yang, Yang, Zamolodchikov, Zamolodchikov, Zamolodchikov, Zuber   +52 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Combinatorial and topological phase structure of non-perturbative n-dimensional quantum gravity

, 1992
We provide a non-perturbative geometrical characterization of the partition function of $n$-dimensional quantum gravity based on a coarse classification of riemannian geometries.
Carfora, M., Martellini, M., Marzuoli, A.   +2 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

New Conformally Invariant Born–Infeld Models and Geometrical Currents

Physics
A new conformally invariant gravitational generalization of the Born–Infeld (BI) model is proposed and analyzed from the point of view of symmetries. Taking a geometric identity involving the determinant functions detfBμν, Fμν with the Bach Bμν and the ...
Diego Julio Cirilo-Lombardo
doaj   +1 more source

Experimental analysis of lateral impact on planar brittle material

, 2009
The fragmentation of alumina and glass plates due to lateral impact is studied. A few hundred plates have been fragmented at different impact velocities and the produced fragments are analyzed.
A. Chmel, E. H. Yoffe, F. P. M. dos Santos, L. B. Freund, R. Donangelo, R. H. Dalitz, S. R. Souza, V. C. Barbosa, W. Weibull   +8 more
core   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Determination of Sewing Thread Consumption for 602, 605, and 607 Cover Stitches Using Geometrical and Multi-Linear Regression Models

AUTEX Research Journal, 2020
This work deals with prediction of the quantities of sewing threads required to sew a garment using cover stitches for the different classes of 600 (602, 605 and 607 cover stitches) by performing a rapid and precise methods (Geometrical and statistical).
Sarah Malek, Boubaker Jaouachi, Dominique Adolphe Charles   +2 more
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Large-Eddy Simulations of Unsteady Reaction Flow Characteristics Using Four Geometrical Combustor Models

Aerospace, 2023
Combustion instability constitutes the primary loss source of combustion chambers, gas turbines, and aero engines, and it affects combustion performance or results in a sudden local oscillation.
Nan Meng, Feng Li
doaj   +1 more source