Results 41 to 50 of about 69,417 (298)

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

open access: yesFEBS 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   +5 more
wiley   +1 more source

Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells

open access: yesMolecules, 2023
The attainment of a well-crystallized photo-absorbing layer with minimal defects is crucial for achieving high photovoltaic performance in polycrystalline solar cells.
Fengyou Wang   +7 more
doaj   +1 more source

The Ultimate Fate of Supercooled Liquids

open access: yes, 2010
In recent years it has become widely accepted that a dynamical length scale {\xi}_{\alpha} plays an important role in supercooled liquids near the glass transition.
Anderson S. R.   +42 more
core   +1 more source

Coordinated optimization of visual cortical maps (II) Numerical studies [PDF]

open access: yes, 2012
It is an attractive hypothesis that the spatial structure of visual cortical architecture can be explained by the coordinated optimization of multiple visual cortical maps representing orientation preference (OP), ocular dominance (OD), spatial frequency,
A Antonini   +149 more
core   +4 more sources

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

open access: yesFEBS 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   +13 more
wiley   +1 more source

Formation of microstructure of Bi-40 wt. % Sn alloy during hightspeed crystallization [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2017
Rapidly solidified foils of Bi — 40 wt. % Sn have homogeneous distribution bismuth and tin phases with microcrystalline structure. Its formation is caused by the spinodal decay of supercooled supersaturated liquid solution and subsequent nucleation and ...
V.G. Shepelevich
doaj   +1 more source

About modification of foundry magnesium alloys

open access: yesЛитьë и металлургия, 2023
It is shown that the main modifiers of foundry magnesium alloys cannot create heterogeneous crystallization centers in melts during their solidification. Modification of alloy structures is an adsorption‑nanostructural process.
E. I. Marukovich   +2 more
doaj   +1 more source

The crystallization of asymmetric patchy models for globular proteins in solution

open access: yes, 2013
Asymmetric patchy particle models have recently been shown to describe the crystallization of small globular proteins with near quantitative accuracy. Here, we investigate how asymmetry in patch geometry and bond energy generally impact the phase diagram
Charbonneau, Patrick, Fusco, Diana
core   +2 more sources

Crystal Structure of Iron at the Center of the Earth

open access: yesThe Review of High Pressure Science and Technology, 2011
The inner core, most remote part of our planet, is composed of solid iron. Because the relevant ultrahigh pressure and temperature conditions were only accessible by dynamical shock-wave compression experiments, the crystal structure of iron at the inner core has long been under debate. Our first static experiments show that the hexagonal close-packed (
openaire   +2 more sources

Phase-coherent sensing of the center-of-mass motion of trapped-ion crystals

open access: yesPhysical Review A, 2020
Trapped ions are sensitive detectors of weak forces and electric fields that excite ion motion. Here measurements of the center-of-mass motion of a trapped-ion crystal that are phase-coherent with an applied weak external force are reported. These experiments are conducted far from the trap motional frequency on a two-dimensional trapped-ion crystal of
M. Affolter   +3 more
openaire   +4 more sources

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