Results 61 to 70 of about 1,747,809 (284)

Three paths toward the quantum angle operator

, 2016
We examine mathematical questions around angle (or phase) operator associated with a number operator through a short list of basic requirements. We implement three methods of construction of quantum angle.
Gazeau, Jean Pierre, Szafraniec, Franciszek Hugon   +1 more
core   +3 more sources

Improved algebraic methods for circle fitting

Electronic Journal of Statistics, 2009
Inspired by the circle fitting algorithm "Hyper" of Al- Sharadqah and Chernov (1), which eliminates the second order "essential bias" that excludes terms of O( 2 /N 2 ), we extend their analysis and show that by a small modification the second order bias can be eliminated com- pletely. By numerical experiments, we show that this results in better per-
Rangarajan, Prasanna, Kanatani, Kenichi
openaire   +2 more sources

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

Integrals of motion of the Haldane Shastry Model

, 1994
In this letter we develop a method to construct all the integrals of motion of the $SU(p)$ Haldane-Shastry model of spins, equally spaced around a circle, interacting through a $1/r^2$ exchange interaction.
Bernard D, Chari V, Drinfel'd V B, Drinfel'd V B, F D M Haldane, Haldane F D M, Inozemtsev V I, Izergin A G, J C Talstra, Kawakami N, Kirillov A N, Minahan J A   +11 more
core   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Sensitive detection of circular DNAs at single-nucleotide resolution using guided realignment of partially aligned reads

BMC Bioinformatics, 2019
Background Circular DNA has recently been identified across different species including human normal and cancerous tissue, but short-read mappers are unable to align many of the reads crossing circle junctions hence limiting their detection from short ...
Iñigo Prada-Luengo, Anders Krogh, Lasse Maretty, Birgitte Regenberg   +3 more
doaj   +1 more source

Family of Bresse's circles and graphic determination of acceleration using the same [PDF]

Tehnika, 2015
This work generalizes the notion of Bresse's circles and shows that there are two infinite families of circles: - first, with each circle passes through the instantaneous center of rotation and instantaneous center of the accelerations, centered on their
Ljubomirović Miloš D.
doaj   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source

Topological Charge Detection Using Generalized Contour-Sum Method from Distorted Donut-Shaped Optical Vortex Beams: Experimental Comparison of Closed Path Determination Methods

Applied Sciences, 2019
A generalized contour-sum method has been proposed to measure the topological charge (TC) of an optical vortex (OV) beam using a Shack−Hartmann wavefront sensor (SH-WFS).
Daiyin Wang, Hongxin Huang, Haruyoshi Toyoda, Huafeng Liu   +3 more
doaj   +1 more source

Phase space methods for particles on a circle [PDF]

Journal of Mathematical Physics, 2003
The phase space S×Z for a particle on a circle is considered. Displacement operators in this phase space are introduced and their properties are studied. Wigner and Weyl functions in this context are also considered and their physical interpretation and properties are discussed.
Zhang, S., Vourdas, A.
openaire   +3 more sources