نتایج جستجو برای: infrared spectrometer

تعداد نتایج: 123942  

2011
Lidija SVEČNJAK Nikola BILIŠKOV Dragan BUBALO Domagoj BARIŠIĆ

Th e chemical composition and sensory characteristics vary signifi cantly within different honey types. In order to determine botanical origin of honey, it is necessary to conduct rather complicated and time consuming analytical methods. IR spectroscopy has not yet been experimentally explored for honey analysis in Croatia, so the aim of this study was to determine claimed botanical origin of h...

Journal: :Astrobiology 2005
Giovanna Tinetti Victoria S Meadows David Crisp William Fong Thangasamy Velusamy Heather Snively

The principal goal of the NASA Terrestrial Planet Finder (TPF) and European Space Agency's Darwin mission concepts is to directly detect and characterize extrasolar terrestrial (Earthsized) planets. This first generation of instruments is expected to provide disk-averaged spectra with modest spectral resolution and signal-to-noise. Here we use a spatially and spectrally resolved model of a Mars...

Journal: :Applied spectroscopy 2007
Miryeong Sohn David S Himmelsbach Franklin E Barton Carl A Griffey Wynse Brooks Kevin B Hicks

The objective of this study was to explore the potential of near-infrared spectroscopy for determining the compositional quality properties of barley as a feedstock for fuel ethanol production and to compare the prediction accuracy between calibration models obtained using a Fourier transform near-infrared system (FT-NIR) and a dispersive near-infrared system. The total sample set contained 206...

Journal: :Faraday discussions 2011
Sieghard Albert Karen Keppler Albert Philippe Lerch Martin Quack

We report a rotationally resolved analysis of the high resolution FTIR spectrum of naphthalene which can be considered as a prototypical molecule for polycyclic aromatic hydrocarbons (PAHs), and a similar analysis for the prototypical heterocyclic aromatic molecule indole. The spectra have been measured using a resolution of 0.0008 cm(-1) (21 MHz) with the new high resolution FTIR prototype spe...

Journal: :The Journal of chemical physics 2012
S K Karthick Kumar A Tamimi M D Fayer

Multidimensional visible spectroscopy using pulse shaping to produce pulses with stable controllable phases and delays has emerged as an elegant tool to acquire electronic spectra faster and with greatly reduced instrumental and data processing errors. Recent migration of this approach using acousto-optic modulator (AOM) pulse shaping to the mid-infrared region has proved useful for acquiring t...

Journal: :The Review of scientific instruments 2013
Z H Su J Gan Q K Yu Q H Zhang Z H Liu J M Bao

A generic new data processing method is developed to accurately calculate the absolute optical path difference of a low-finesse Fabry-Perot cavity from its broadband interference fringes. The method combines Fast Fourier Transformation with nonlinear curve fitting of the entire spectrum. Modular functions of LabVIEW are employed for fast implementation of the data processing algorithm. The adva...

2002
L. Testi

We report complete near-infrared (0.9-2.4 μm) spectral observations of the largest know trans-neptunian objects (TNO) 28976 = 2001 KX76 taken in two different nights using the new Near Infrared Camera Spectrometer (NICS) attached to the 3.56m Telescopio Nazionale Galileo (TNG). The spectra are featureless and correspond to a neutral colored object. Our observations indicate that the surface of ...

2014
Claudia Beleites Jürgen Popp Christoph Krafft Mustafa Kansiz

Fourier transform infrared (FTIR) microscopic imaging uses a combination of an FTIR spectrometer with a microscope and Focal Plane Array (FPA) detector. The method has been recognized as a powerful and versatile imaging tool in many disciplines, ranging from biomedical research through to materials science, art conservation and forensics. The Field Of View (FOV) depends on both the magnifi cati...

2016
ZHANG Xin-liang CHEN Yan-hong LI Yan

The temperature of solid state propellant combustion flame is studied by a Bruker OPAG33 Fourier Transform Infrared Spectrometer (FTIR). The infrared emission spectra of Nitrate Ester Plasticized Polyether Propellant (NEPE) solid propellant are measured with a resolution of 4 cm−1 at a testing distance of 20 m in real time. The temperature of NEPE propellant plume is calculated by using the fin...

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