Results 31 to 40 of about 470,894 (260)
Fourier-Mukai and Nahm transforms for holomorphic triples on elliptic curves [PDF]
, 2004 We define a Fourier-Mukai transform for a triple consisting of two holomorphic vector bundles over an elliptic curve and a homomorphism between them. We prove that in some cases the transform preserves the natural stability condition for a triple.
Atiyah +28 more
core +4 more sources
Discrimination capacity analysis of FTIR-PCA and EEM-PARAFAC on dandelion tissues extracts
Food Innovation and Advances, 2023 Dandelion root contains triterpenoids, polyphenols and flavonoids, dandelion leaf is rich in polyphenols, flavonoids, flavonoids glycosides, and dandelion flower mainly contains flavonoids, among other substances.
Guoqing Li, Hui Zou, Yilun Chen
doaj +1 more source
Reflection optical two-dimensional Fourier-transform spectroscopy
Optics Express, 2013 We have developed a technique to perform optical two-dimensional Fourier-transform (2DFT) spectroscopy in a reflection geometry. Various reflection 2DFT spectra are obtained for an atomic vapor. The technique is useful for the cases where optical 2DFT spectroscopy cannot be performed in the transmission geometry.
Hebin, Li +2 more
openaire +2 more sources
Two-Dimensional Quaternion Fractional Fourier Transform: Definition and Probabilistic Analysis
Fractal and FractionalThis article presents a detailed study of the two-dimensional quaternion fractional Fourier transform (2D QFRFT) and investigates its role in the probabilistic analysis of quaternion-valued signals.
Muhammad Adnan Samad +5 more
doaj +1 more source
Discrete Fourier Transform in Nanostructures using Scattering
, 2003 In this paper we show that the discrete Fourier transform can be performed by scattering a coherent particle or laser beam off a two-dimensional potential that has the shape of rings or peaks.
Awschalom, D. D. +3 more
core +1 more source
Two-Dimensional Microwave Fourier Transform Spectroscopy [PDF]
Zeitschrift für Naturforschung A, 1984 We performed a pulse sequence experiment utilizing a technique, which is comparable with two-dimensional NMR-spectroscopy. Some theoretical considerations based on the three-level Bloch equations are given. This double resonance technique may be useful for the assignment of complicated spectra.
Stahl, Wolfgang +2 more
openaire +2 more sources
FEBS 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
Discrete Two-Dimensional Fourier Transform in Polar Coordinates Part I: Theory and Operational Rules
Mathematics, 2019 The theory of the continuous two-dimensional (2D) Fourier transform in polar coordinates has been recently developed but no discrete counterpart exists to date.
Natalie Baddour
doaj +1 more source
Quantum optical synthesis in 2D time–frequency space
APL Photonics, 2021 Conventional optical synthesis, the manipulation of the phase and amplitude of spectral components to produce an optical pulse in different temporal modes, is revolutionizing ultrafast optical science and metrology. These technologies rely on the Fourier
Rui-Bo Jin +8 more
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FEBS 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