Results 31 to 40 of about 469,971 (293)
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
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
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
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
FEBS Open Bio, EarlyView.Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen +6 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
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
Journal of Mathematics, 2019 A definition of the two-dimensional quaternion linear canonical transform (QLCT) is proposed. The transform is constructed by substituting the Fourier transform kernel with the quaternion Fourier transform (QFT) kernel in the definition of the classical ...
Mawardi Bahri, Ryuichi Ashino
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
doaj +1 more source