scholarly journals Detailed FT near-infrared study of the behaviour of water and hydroxyl in sedimentary length-fast chalcedony, SiO2, upon heat treatment

2011 ◽  
Vol 81 (1) ◽  
pp. 552-559 ◽  
Author(s):  
Patrick Schmidt ◽  
Aïcha Badou ◽  
François Fröhlich
Keyword(s):  
Heat Treatment ◽  
Near Infrared ◽  
Infrared Study

Detailed near-infrared study of the ‘water’-related transformations in silcrete upon heat treatment

2016 ◽  
Vol 44 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Patrick Schmidt ◽  
Christoph Lauer ◽  
Gerald Buck ◽  
Christopher E. Miller ◽  
Klaus G. Nickel
Keyword(s):  
Heat Treatment ◽  
Near Infrared ◽  
Infrared Study

A Near‐Infrared Study of the NS 14 Bipolar Nebula

1998 ◽  
Vol 509 (2) ◽  
pp. 749-760 ◽  
Author(s):  
Eric M. Howard ◽  
Judith L. Pipher ◽  
William J. Forrest
Keyword(s):  
Near Infrared ◽  
Infrared Study

Plucking a hydrogen bond: A near infrared study of all four intermolecular modes in (DF)2

1996 ◽  
Vol 105 (16) ◽  
pp. 6645-6664 ◽  
Author(s):  
Scott Davis ◽  
David T. Anderson ◽  
David J. Nesbitt
Keyword(s):  
Hydrogen Bond ◽  
Near Infrared ◽  
Infrared Study

scholarly journals Water Properties of Soft Contact Lenses: A Comparative Near-Infrared Study of Two Hydrogel Materials

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Jelena Munćan ◽  
Ivana Mileusnić ◽  
Jovana Šakota Rosić ◽  
Aleksandra Vasić-Milovanović ◽  
Lidija Matija
Keyword(s):  
Water Content ◽  
Near Infrared ◽  
Contact Lenses ◽  
Polymer Network ◽  
The State ◽  
Vinyl Pyrrolidone ◽  
Soft Contact ◽  
Infrared Study ◽  
Soft Contact Lenses ◽  
State Of Water

The functionality of soft contact lenses depends strongly on the water content and their water-transport ability. This study was conducted in order to examine the state of water in two sets of soft contact lenses: VSO38, pHEMA Filcon I 1, and VSO50, copolymer of HEMA and VP Filcon II 1 (HEMA = 2-hydroxy-ethyl methacrylate; VP = vinyl pyrrolidone). Hydrogel lenses were studied using near-infrared spectroscopy and the novel Aquaphotomics approach in order to determine the state of water in materials based on their near-infrared spectra. Aquaphotomics approach investigates absorption at specific vibrational bands of water’s covalent and hydrogen bonds which can provide information on how the water structure changes with the structural change of the polymer network. Principal component analysis and specific star-chart “aquagram” were used to analyse water spectral pattern in hydrogel materials. The findings show that material VSO38 has water predominantly organized in bound state, while material with higher water content, VSO50, has more free and weakly hydrogen bonded water. Our findings define in detail exact water species existing and interacting with the polymer network. The results show qualitative and quantitative possibilities of Aquaphotomics for better modelling and understanding water behaviour in hydrogel materials.

scholarly journals Radio continuum and near-infrared study of the MGRO J2019+37 region

2009 ◽  
Vol 507 (1) ◽  
pp. 241-250 ◽  
Author(s):  
J. M. Paredes ◽  
J. Martí ◽  
C. H. Ishwara-Chandra ◽  
J. R. Sánchez-Sutil ◽  
A. J. Muñoz-Arjonilla ◽  
...  
Keyword(s):  
Near Infrared ◽  
Radio Continuum ◽  
Infrared Study

scholarly journals Near-infrared study of short-range disorder of OH and F in monoclinic amphiboles

1999 ◽  
Vol 84 (1-2) ◽  
pp. 86-91 ◽  
Author(s):  
Jean-Louis Robert ◽  
Giancarlo Della Ventura ◽  
Frank C. Hawthorne
Keyword(s):  
Short Range ◽  
Near Infrared ◽  
Infrared Study

scholarly journals A multicolor near-infrared study of the dwarf nova IP Pegasi

2007 ◽  
Vol 474 (1) ◽  
pp. 213-220 ◽  
Author(s):  
T. Ribeiro ◽  
R. Baptista ◽  
E. T. Harlaftis ◽  
V. S. Dhillon ◽  
R. G. M. Rutten
Keyword(s):  
Near Infrared ◽  
Infrared Study ◽  
Dwarf Nova
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