Results 31 to 40 of about 3,604,557 (398)

Exploratory analysis of excitation-emission matrix fluorescence spectra with self-organizing maps as a basis for determination of organic matter removal efficiency at water treatment works [PDF]

open access: yes, 2009
In the paper, the self-organizing map (SOM) was employed for the exploratory analysis of fluorescence excitation-emission data characterizing organic matter removal efficiency at 16 water treatment works in the UK.
Andy Baker   +29 more
core   +1 more source

Kinetics of 5-aminolevulinic acid-induced fluorescence in organ cultures of bronchial epithelium and tumor [PDF]

open access: yes, 2002
Background: 5-Aminolevulinic acid (5-ALA)-induced protoporphyrin IX (PPIX) fluorescence improves the differentiation of tumor and normal tissue in the bladder, skin and brain. Objective: The kinetics of 5-ALA-induced protoporphyrin IX (PPIX) fluorescence
Al-Batran, Salah   +8 more
core   +1 more source

A superior bright NIR luminescent nanoparticle preparation and indicating calcium signaling detection in cells and small animals

open access: yesCell & Bioscience, 2018
Background Near-field fluorescence (NFF) effects were employed to develop a novel near-infrared (NIR) luminescent nanoparticle (LNP) with superior brightness. The LNP is used as imaging contrast agent for cellular and small animal imaging and furthermore
Jian Zhang, Joseph. R. Lakowicz
doaj   +1 more source

Palaeomagnetic and synchrotron analysis of >1.95 Ma fossil-bearing palaeokarst at Haasgat, South Africa

open access: yesSouth African Journal of Science, 2014
Palaeomagnetic analysis indicates that Haasgat, a fossil-bearing palaeocave in the Gauteng Province of South Africa, is dominated by reversed magnetic polarity in its oldest, deepest layers and normal polarity in the younger layers.
Andy I.R. Herries   +7 more
doaj   +1 more source

Ultra-high resolution imaging by fluorescence photoactivation localization microscopy.

open access: yesBiophysical Journal, 2006
Biological structures span many orders of magnitude in size, but far-field visible light microscopy suffers from limited resolution. A new method for fluorescence imaging has been developed that can obtain spatial distributions of large numbers of ...
S. Hess   +2 more
semanticscholar   +1 more source

Photophysics, Molecular Reorientation in Solution and X-Ray Structure of a New Fluorescent Probe 1,7-Diazaperylene [PDF]

open access: yes, 1993
A new fluorescent molecule 1,7-diazaperylene (DP) has been investigated by means of time-resolved and steady-state polarized fluorescence spectroscopy, as well as X-ray spectroscopy.
Barkely   +32 more
core   +1 more source

Cytogenetic analysis using quantitative, high-sensitivity, fluorescence hybridization.

open access: yesProceedings of the National Academy of Sciences of the United States of America, 1986
This report describes the use of fluorescence in situ hybridization for chromosome classification and detection of chromosome aberrations. Biotin-labeled DNA was hybridized to target chromosomes and subsequently rendered fluorescent by successive ...
D. Pinkel, T. Straume, J. Gray
semanticscholar   +1 more source

Screening of antioxidant properties of the apple juice using the front-face synchronous fluorescence and chemometrics [PDF]

open access: yes, 2017
Fluorescence spectroscopy is gaining increasing attention in food analysis due to its higher sensitivity and selectivity as compared to other spectroscopic techniques. Synchronous scanning fluorescence technique is particularly useful in studies of multi-
A Gliszczyńska-Świgło   +52 more
core   +1 more source

A molecular theory for two-photon and three-photon fluorescence polarization [PDF]

open access: yes, 2011
In the analysis of molecular structure and local order in heterogeneous samples, multiphoton excitation of fluorescence affords chemically specific information and high-resolution imaging. This report presents the results of an investigation that secures
Craig D. P.   +7 more
core   +1 more source

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