Results 51 to 60 of about 63,574 (265)

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Enhancing the Cooling of a Rotating Mirror in a Laguerre–Gaussian Cavity Optorotational System via Nonlinear Cross-Kerr Interaction

open access: yesPhotonics
The cooling of a macroscopic mechanical oscillator to its quantum ground state is an important step for achieving coherent control over mechanical quantum states.
Xinyue Cao   +3 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Nonlinear Normal Modes of a Rotating Shaft Based on the Invariant Manifold Method

open access: yesInternational Journal of Rotating Machinery, 2004
The nonlinear normal mode methodology is generalized to the study of a rotating shaft supported by two short journal bearings. For rotating shafts, nonlinearities are generated by forces arising from the supporting hydraulic bearings.
Mathias Legrand   +3 more
doaj   +1 more source

Resonance of Fofonoff's Mode in a Rotated Basin

open access: yesJournal of Physical Oceanography, 1993
Abstract Fofonoff solutions to the inviscid barotropic potential vorticity equation are found for the steady, free flow in a basin rotated at an arbitrary angle to a latitude circle. These solutions am used to study the inertial recirculation of the subtropical gyre, which is forced by anomalously low values of potential vorticity within the separated ...
openaire   +2 more sources

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

Case Study of Pump Failure Due to Rotor-Stator Interaction

open access: yesInternational Journal of Rotating Machinery, 1994
Fluiddynamic interaction between rotor and stator generates local pressure fluctuation and can be a cause ofstructural vibration of turbomachines. The interaction produces a spatial distribution of pressure fluctuation with a certain diametrical mode ...
Hideo Ohashi
doaj   +1 more source

Design of online fault diagnosis and early warning system for coal mine rotating machinery

open access: yesGong-kuang zidonghua, 2019
In view of problems that existing coal mine machinery online monitoring and diagnosis technology did not realize online extraction of fault characteristics and automatic identification of fault types, an online fault diagnosis and early warning system ...
YANG Yiqing   +5 more
doaj   +1 more source

Fast rotation and acoustic modes

open access: yesBulletin de la Société Royale des Sciences de Liège, 2020
In this contribution, we describe recent progress in modelling acoustic pulsations of rapidly rotating stars. We then go on to describe very recent attempts at interpreting pulsation spectra in two observed stars. These make use of multi-colour mode visibilities, mode excitation, and pulsation frequencies in order to con-strain the identification of ...
openaire   +3 more sources

Rotational modes of relativistic stars: Analytic results [PDF]

open access: yesPhysical Review D, 2000
36 pages revtex v3.1, 2 eps ...
Lockitch, Keith H.   +2 more
openaire   +3 more sources

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