Results 41 to 50 of about 1,049,521 (250)

A review of microstructure and texture evolution with nanoscale precipitates for copper alloys

open access: yesJournal of Materials Research and Technology, 2020
Copper alloys are widely used in the lead frame, high-speed railway and other applications due to their high electrical conductivity and adequate mechanical properties. In this work, the texture and microstructure evolution under hot deformation of Cu-Ni-
Yongfeng Geng   +9 more
doaj   +1 more source

Three approaches on war problem within Gheisar Aminpour poems [PDF]

open access: yesادبیات پایداری, 2020
As an alert and sensitive observer, the artist shows different reactions to the issue of war within different contexts and conditions. These reactions have obvious and fundamental differences during the war or post-war period.
Reza Zarrinkamar, Mohammad Mahdi Sayyar
doaj   +1 more source

On the Relative Motion of the Earth's Axis of Figure and the Pole of Rotation [PDF]

open access: yesSymposium - International Astronomical Union, 1979
The motion of the Earth's axis of inertia has been derived, taking elastic deformation into account, from the polar coordinates determined by the BIH for the period from 1962.0 to 1975.0. Characteristics of the motion of both the pole of inertia and the pole of rotation have been examined.
Angelo Poma, Edoardo Proverbio
openaire   +1 more source

Improvements in the Quantitative Evaluation of Three-Dimensional Texture. I. The Nature of the Information Obtained from Pole Figures

open access: yes, 1995
The sources of indefiniteness in the orientation-distribution-function (ODF) description of crystalline texture are shown to result from the integral nature of the pole-figure measurement.
J.-W. He   +4 more
core   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

Robust pole assignment techniques via state feedback [PDF]

open access: yes, 2000
We present a unifying computational framework to solve robust pole assignment problems for linear systems using state feedback. The new framework uses Sylvester equation based parametrizations of the pole assignment problems.
Varga, Andras
core  

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

A X-ray study of β-phase and molecular orientation in nucleated and non-nucleated injection molded polypropylene resins

open access: yesMaterials Research, 2009
The development of α and β-phases and the molecular orientation of injection molded disks of two isotactic polypropylene (i-PP) resins were studied by wide angle X-ray diffraction (WAXD) and pole figures.
Marcia Maria Favaro   +2 more
doaj   +1 more source

Robust pole assignment for descriptor systems [PDF]

open access: yes, 2000
By using a generalized Sylvester equation based parametrization, three minimum norm robust pole assignment problems for descriptor systems are formulated as unconstrained minimization problems for suitably chosen cost functions.
Varga, Andras
core  

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

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