Results 21 to 30 of about 53,053 (260)

Measurement of Cyanine Dye Photobleaching in Photosensitizer Cyanine Dye Conjugates Could Help in Optimizing Light Dosimetry for Improved Photodynamic Therapy of Cancer

open access: yesMolecules, 2018
Photodynamic therapy (PDT) of cancer is dependent on three primary components: photosensitizer (PS), light and oxygen. Because these components are interdependent and vary during the dynamic process of PDT, assessing PDT efficacy may not be trivial ...
Nadine S. James   +4 more
doaj   +1 more source

Synthesis and Photostability of Cyclooctatetraene-Substituted Free Base Porphyrins

open access: yesChemistry, 2021
A series of free base meso-tetraarylporphyrins functionalized with substituents containing one, two, and four cyclooctatetraene (COT) moieties have been obtained and characterized by spectral and photophysical studies. Three COT-free porphyrins served as
Joanna Buczyńska   +6 more
doaj   +1 more source

Imaging of Evoked Cortical Depolarizations Using Either ASAP2s, or chi-VSFP, or Di-4-Anepps, or Autofluorescence Optical Signals

open access: yesJournal of Integrative Neuroscience, 2023
Background: Population voltage imaging is used for studying brain physiology and brain circuits. Using a genetically encoded voltage indicator (GEVI), “VSFP” or “ASAP2s”, or a voltage-sensitive dye, Di-4-Anepps, we conducted population voltage imaging in
Katarina D. Milicevic   +7 more
doaj   +1 more source

Photo-stability study of a solution-processed small molecule solar cell system: correlation between molecular conformation and degradation

open access: yesScience and Technology of Advanced Materials, 2018
Solution-processed organic small molecule solar cells (SMSCs) have achieved efficiency over 11%. However, very few studies have focused on their stability under illumination and the origin of the degradation during the so-called burn-in period.
Michael J. Newman   +10 more
doaj   +1 more source

An Approach for Characterizing and Comparing Hyperspectral Microscopy Systems

open access: yesSensors, 2013
Hyperspectral imaging and analysis approaches offer accurate detection and quantification of fluorescently-labeled proteins and cells in highly autofluorescent tissues.
Silas J. Leavesley   +6 more
doaj   +1 more source

Low Power Consumption Mode Switch Based on Three-Dimensional Polymer Mach-Zehnder Interferometer

open access: yesIEEE Photonics Journal, 2020
We present a polymer thermo-optic mode switch based on the structure of two vertical Mach-Zehnder interferometers (MZIs). It can achieve a rapid switch between ${E_{00}}$, ${E_{01}}$, ${E_{10}}$ and ${E_{11}}$ with the different heaters turning on.
Jiawen Lv   +8 more
doaj   +1 more source

On the Photobleaching of Chlorophyll

open access: yesJournal of the agricultural chemical society of Japan, 1955
The photobleaching of chlorophyll which was absorbed on silica gel was examined by the irradiation of visible light (Matsuda tungsten filament lamp)under the various conditions: I. in the air with moisture. II. in N2 gas with moisture. III. in the air in dry state. IV. in N2 gas in dry state.
HAYASHIYA, Keizo   +3 more
openaire   +2 more sources

Photobleaching Effect on the Sensitivity Calibration at 638 nm of a Phosphorus-Doped Single-Mode Optical Fiber Dosimeter

open access: yesSensors
We investigated the influence of the photobleaching (PB) effect on the dosimetry performances of a phosphosilicate single-mode optical fiber (core diameter of 6.6 µm) operated at 638 nm, within the framework of the LUMINA project.
Fiammetta Fricano   +12 more
doaj   +1 more source

An improved method for whole-mount in situ hybridization in regenerating tails of Xenopus laevis tadpoles

open access: yesFrontiers in Cell and Developmental Biology
Whole-mount in situ hybridization (WISH) is a widely used method that supports the concept of “seeing is believing” by enabling the visualization of gene expression patterns in whole-mount multicellular samples or sections. This technique is essential in
A. D. Shitikov   +5 more
doaj   +1 more source

Influence of cell growth conditions and medium composition on EGFP photostability in live cells

open access: yesBioTechniques, 2015
Photostability is a key characteristic of fluorescent proteins. It was recently demonstrated that green fluorescent protein (GFP) photobleaching in live cells can be suppressed by changes in medium composition. Here we show that Ham's F12 medium provides
Anastasia V. Mamontova   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy