Variable-Temperature Fourier Transform Near-Infrared (FT-NIR) Imaging Spectroscopy of the Diffusion Process of Butanol(OD) into Polyamide 11

2011 ◽  
Vol 65 (9) ◽  
pp. 1051-1055 ◽  
Author(s):  
Miriam Unger ◽  
Yukihiro Ozaki ◽  
Heinz W. Siesler
Keyword(s):  
Fourier Transform ◽  
Diffusion Process ◽  
Near Infrared ◽  
Variable Temperature ◽  
Imaging Spectroscopy ◽  
Polyamide 11 ◽  
Nir Imaging

scholarly journals Synchronized Hardware-Registered VIS-NIR Imaging Spectroscopy and 3D Sensing on a Fresco by Botticelli

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1287
Author(s):  
Jana Striova ◽  
Luca Pezzati ◽  
Enrico Pampaloni ◽  
Raffaella Fontana
Keyword(s):  
Near Infrared ◽  
Imaging Spectroscopy ◽  
Three Dimensional ◽  
Mural Painting ◽  
Output Data ◽  
Painting Technique ◽  
Nir Imaging ◽  
3D Sensing ◽  
3D Acquisition ◽  
Reflectance Imaging Spectroscopy

We discuss a synchronised sensing technique for the analysis of painted surfaces of frescos. Specifically, the performance of Visible-Near Infrared (VIS-NIR) Reflectance Imaging Spectroscopy (RIS) synchronized with three-dimensional (3D) acquisition is demonstrated in the study of a detached mural painting by Alessandro Botticelli. Synchronized sensing generates georeferenced data for simplified data treatment and interpretation. We show how such output data can provide key information to interpret important fresco surface and subsurface features (e.g., painting technique, material composition, pentimenti).

The Role of NIR Fluorescence in MDR Cancer Treatment: From Targeted Imaging to Phototherapy

2020 ◽  
Vol 27 (33) ◽  
pp. 5510-5529
Author(s):  
Zengtao Wang ◽  
Qingqing Meng ◽  
Shaoshun Li
Keyword(s):  
Cancer Treatment ◽  
Near Infrared ◽  
Combined Therapy ◽  
Efflux Pumps ◽  
Cross Resistance ◽  
Great Promise ◽  
Drug Efflux ◽  
Nir Dyes ◽  
Nir Imaging ◽  
Drug Efflux Pumps

Background: Multidrug Resistance (MDR) is defined as a cross-resistance of cancer cells to various chemotherapeutics and has been demonstrated to correlate with drug efflux pumps. Visualization of drug efflux pumps is useful to pre-select patients who may be insensitive to chemotherapy, thus preventing patients from unnecessary treatment. Near-Infrared (NIR) imaging is an attractive approach to monitoring MDR due to its low tissue autofluorescence and deep tissue penetration. Molecular NIR imaging of MDR cancers requires stable probes targeting biomarkers with high specificity and affinity. Objective: This article aims to provide a concise review of novel NIR probes and their applications in MDR cancer treatment. Results: Recently, extensive research has been performed to develop novel NIR probes and several strategies display great promise. These strategies include chemical conjugation between NIR dyes and ligands targeting MDR-associated biomarkers, native NIR dyes with inherent targeting ability, activatable NIR probes as well as NIR dyes loaded nanoparticles. Moreover, NIR probes have been widely employed for photothermal and photodynamic therapy in cancer treatment, which combine with other modalities to overcome MDR. With the rapid advancing of nanotechnology, various nanoparticles are incorporated with NIR dyes to provide multifunctional platforms for controlled drug delivery and combined therapy to combat MDR. The construction of these probes for MDR cancers targeted NIR imaging and phototherapy will be discussed. Multimodal nanoscale platform which integrates MDR monitoring and combined therapy will also be encompassed. Conclusion: We believe these NIR probes project a promising approach for diagnosis and therapy of MDR cancers, thus holding great potential to reach clinical settings in cancer treatment.

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