Results 91 to 100 of about 805,333 (299)

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

All-optical mode conversion via spatially multimode four-wave mixing

New Journal of Physics, 2016
We experimentally demonstrate the conversion of a Gaussian beam to an approximate Bessel–Gauss mode by making use of a non-collinear four-wave mixing (4WM) process in hot atomic vapor.
Onur Danaci, Christian Rios, Ryan T Glasser   +2 more
doaj   +1 more source

Uniform Phase Empirical Mode Decomposition: An Optimal Hybridization of Masking Signal and Ensemble Approaches

IEEE Access, 2018
The empirical mode decomposition (EMD) is an established method for the time-frequency analysis of nonlinear and nonstationary signals. However, one major drawback of the EMD is the mode mixing effect.
Yung-Hung Wang, Kun Hu, Men-Tzung Lo
doaj   +1 more source

Photon & Axion Oscillation In a Magnetized Medium: A Covariant Treatment

, 2008
Pseudoscalar particles, with almost zero mass and very weak coupling to the visible matter, arise in many extensions of the standard model of particle physics.
A. Das, A. Rubbia, Avijit K. Ganguly, B. W. Carroll, J. Kapusta, J. N. Clarke, M. Abramowitz, M. Le Bellac, M. I. Vysotsky, Pankaj Jain, Subhayan Mandal   +10 more
core   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Study on influence factors of mixing uniformity for dredged spoil utilized as a resource by PFM with static mixer [PDF]

E3S Web of Conferences
The static mixer is a non-moving structure used for mixing fluid medium in the pipeline, and structural parameters are important factors affecting the mixing effect.
Hu Junlong, Lu Hesheng, Xie Yao, Li Jinxiang, Wang Deyong   +4 more
doaj   +1 more source

FPU phenomenon for generic initial data

, 2007
The well known FPU phenomenon (lack of attainment of equipartition of the mode--energies at low energies, for some exceptional initial data) suggests that the FPU model does not have the mixing property at low energies. We give numerical indications that
Carati, A., Galgani, L., Giorgilli, A., Paleari, S.   +3 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

Neutrino mixing and mass hierarchy in Gaussian landscapes

, 2008
The flavor structure of the Standard Model may arise from random selection on a landscape. In a class of simple models, called "Gaussian landscapes," Yukawa couplings derive from overlap integrals of Gaussian zero-mode wavefunctions on an extra ...
Hall, Lawrence J., Salem, Michael P., Watari, Taizan   +2 more
core   +1 more source

Mixed Modes of Innovation [PDF]

OECD Science, Technology and Industry Working Papers, 2012
This study uses exploratory data analysis techniques to develop typologies of innovation modes or strategies for groups of firms. Analysing micro-level survey data from 18 countries we identify five innovation modes. The coherence and relevance of the innovation modes is tested by using them as explanatory factors in equations explaining economic ...
openaire   +1 more source