... Title : In Situ Infrared Reflection Absorption Spectroscopic Characterization of Plasma Enhanced Chemical Vapor Deposited SiO2 Films. ...

detailed knowledge of the electronic properties of the material such as band gap, absorption coefficient, and critical point energies. This in turn provides insight into...

... Title : A SPECTROSCOPIC MEASUREMENT OF THE RESONANT ABSORPTION OF MICROWAVE ENERGY BY OXYGEN IN THE 2.5 ...

An optical spectroscopic characterization is carried out on a reactive dye (reactive orange 1). This dye is widely applied in textile coloration. It is a potential candidate for photonics applications. Its absorption cross-section spectra are measured. A fluorescence spectroscopic ...

Some previous studies of polyaniline, or (phiN)x, using infrared spectroscopy, X ray photoelectron spectroscopy and NMR, are reviewed. New results involving the optical absorption spectra of free standing, electrochemically prepared (phiN)x, in both in th...

To explore the photophysics of platinum acetylide chromopores having strong two-photon absorption cross-sections, we have investigated the synthesis and spectroscopic characterization of a series of platinum acetylide complexes that feature highly &(numbe...

Some data on characterization and spectroscopic studies of radiation emission and absorption of Nd(sup 3+) and Eu(sup 3+) complexes are evaluated. New niobium (V) luminescent compounds are synthesized and the effect on groups of niobium on emission system...

To determine how the formation of color centers degrades performance, a series of spectroscopic experiments to measure electron paramagnetic resonance (EPR) absorption, transmission, and threshold were performed before and after irradiation. Low-temperatu...

Time-resolved electronic absorption, infrared, resonance Raman, and magnetic circular dichroism spectroscopies are applied to characterization of the intermediate which is formed within 20 ps after photodissociation of CO from cytochrome a(sub 3) of reduc...

A linear and nonlinear optical spectroscopic characterization is carried out on three azo dyes (Reactive orange 1, Reactive violet 8, and Acidproof purplish red), and on N-(p-hydroxybenzylidene)-diamino-maleonitrile. Fluorescence quantum distributions, fluorescence quantum yields, and fluorescence lifetimes are measured. The saturable ...

history: Received 16 September 2009 Accepted 7 December 2009 Available online 17 December 2009 PACS: 42V. The optical constant and thickness of the films were characterized using spectroscopic ellipsometric (SE of the films were obtained through spectroscopic ellipsometric measurement. 2. Experiment BLTN-0.45 pellets

The flavoquinone dyes 10-phenyl-isoalloxazine-3-acetic acid ethyl ester (1) and 10-(4-bromo-phenyl)-3-methyl-isoalloxazine (2) in dichloromethane, acetonitrile, and methanol are characterized by absorption and emission spectroscopy. Absorption cross-section spectra, stimulated emission cross-section spectra, fluorescence quantum ...

... The spectroscopic absorption of an aromatic compound on a ... behavior of aromatic compounds on soils at the ... to be characteristic of para-substituted ...

This paper reports the X-ray absorption near edge structure (XANES) spectroscopic characterization of the oxidation state of selenium following microbial metabolism of selenite from aqueous solution. Extended X-ray absorption fine structure (EXAFS) measurements of the amorphous red and gray allotropes of elemental ...

... agents. In particular, the excimer laser was employed for the photolytic preparation of transient species of interest. Spectroscopic ...

... Accession Number : ADA438898. Title : Recent Development in Spectroscopic and Chemical Characterization of Cellulose. ...

Spectroscopic instrumentation and the absorption characteristics of atmospheric gases are discussed in relation to the requirements of spectroscopic stratospheric experiments. Improvement in the spectral resolution, accuracy of the line parameters, and th...

Spectroscope absorption measurements of the stratospheric trace gases hydrogen chloride (HCl) and nitric (HNO3) using a Fourier transform infrared ...

Spectroscope absorption measurements of the stratospheric trace gases hydrogen chloride (HCl) and nitric (HNO3) using a Fourier transform infrared ...

Carotid atherosclerosis has been identified as a potential risk factor for cerebrovascular events, but information about its direct effect on the risk of recurrent stroke is limited due to incomplete diagnosis. The combination of vascular ultrasound, strain rate and spectroscopic photoacoustics could improve the timely diagnosis of plaque status and risk of rupturing. Current ...

FT-IR spectroscopy has been used to characterize white matter, grey matter, and multiple sclerosis (MS) plaques from human central nervous system (CNS) tissue. Discrimination among these three tissue types is possible due to variations in composition. Spectra of white matter exhibit strong lipid absorptions. In contrast, spectra of grey matter reveal a ...

Clinohumite, a humite group mineral, originated from Pamir Mountains, USSR, is used in the present work. Optical absorption, electron paramagnetic resonance (EPR), near infrared (NIR) and M�ssbauer techniques are used in the characterization of the mineral sample. The optical absorption spectrum indicates that Fe(II) impurity is ...

Euglena gracilis possesses a simple but sophisticated light detecting system, consisting of an eyespot formed by carotenoids globules and a photoreceptor. The photoreceptor of Euglena is characterized by optical bistability, with two stable states. In order to provide important and discriminating information on the series of structural changes that Euglena photoreceptive ...

... ULTRAVIOLET BAND RE-ASSIGNMENT FOR ANILINE AND ITS DERIVATIVES. ... of the ultraviolet absorption spectrum for anilines and derivatives ...

... COMPLEX COMPOUNDS, SPECTROSCOPY, STRUCTURAL PROPERTIES, ABSORPTION, PYRIDINES, PYRAZOLES, INDOLES, BRIDGES ...

... of gases in the atmosphere or elsewhere. ... in which a central control unit is ... ABSORPTION, AUSTRALIA, MULTIPLEXING, SIGNAL GENERATION. ...

The complementary use of steady-state and time-resolved spectroscopy in combination with electrochemistry and microscopy are indicative of mutual interactions between semiconducting SWNTs and a water-soluble strong electron acceptor, i.e., perylenediimide. Significant is the stability and the strong electronic coupling of the perylenediimide/SWNT electron donor-acceptor hybrids. Several ...

... AIAA-2003-3259 Acoustic Absorption Measurements for ... AIAA 2003 - 3259 Acoustic Absorption Measurements for Characterization of Gas Mixing ...

The I-II and I-III intermetallic with B32 (Zintl) structure have recently attracted significant interest due to their unusual properties and their use as electrodes in high energy density batteries. Studies of the electronic structure should provide an understanding of the macroscopic properties of these compounds. This work focused on synthesis, characterization, and ...

One of the leading causes of medical malpractice claims in emergency medicine is the misdiagnosis of the presence of foreign bodies. Radiolucent foreign bodies are especially difficult to differentiate from surrounding soft tissue, gas, and bone using existing clinical imaging modalities. Because many radiolucent foreign bodies have sufficient contrast for imaging in the optical domain, we are ...

Plastocyanin isolated from an aquatic higher plant, Ceratophyllum demersum L. (hornwort), has been characterized by electronic absorption, circular dichroism (CD), and electron paramagnetic resonance (EPR) spectroscopies. The visible absorption, CD, and EPR spectra of hornwort plastocyanin indicated a complete similarity of blue copper ...

Active catalytic phases (metal, mixed metals, oxide or mixed oxides) interacting with oxide support on which the active phase is dispersed can affect the percentage exposed, the morphology of supported particles, the degree of reducibility of cations, etc., in a variety of ways. Our objective is to characterize the physical chemistry of the active phase-oxide support ...

Free space optical communication methods and systems, according to various aspects are described. The methods and systems are characterized by transmission of data through free space with a digitized optical signal acquired using wavelength modulation, and by discrimination between bit states in the digitized optical signal using a spectroscopic ...

The first quantitative measurement of photoabsorption in the region determining the Rosseland and Planck mean opacities is obtained for a well-characterized, radiatively heated iron plasma using new techniques and instrumentation. The plasma density and temperature are simultaneously constrained with high accuracy, allowing unambiguous comparisons with opacity models used in ...

and extraction of the pigments in 90% acetone (final concentration). Pigment species were separated on a reversedO to 60% methanol/40% acetone. Pigments were identified by their absorption spectra in solvent (on a distinct pigment composition and binds chlorophyll a (Chl-a), fucoxanthin and chlorophyll c (Chl

The binuclear silver(I) complex of a Schiff base oligopyrrolic macrocycle was prepared in high yield and fully characterized. UV-visible absorption and 1H NMR spectroscopic analyses reveal that coordination of Ag(I) cations is subject to a strong positive homotropic allosteric effect. PMID:16568966

The formation and interconversion of the N-methylphenothiazine cation radical and the N-methylphenothiazine dication from both N-methylphenothiazine and N-methylphenothiazine S-oxide in sulfuric acid solutions were demonstrated with e.s.r. and absorption ...

Attenuated total reflectance (ATR) measurements were performed using Fourier transform infrared (FTIR) spectroscopy in the ATR mode with a thallium iodobromide (KRS-5) crystal to measure the frequencies of the v(sub 3) and v(sub 4) phonon absorption bands...

Attenuated total reflectance (ATR) measurements were performed using Fourier transform infrared (FTIR) spectroscopy in the ATR mode with a thallium iodobromide (KRS-5) crystal to measure the frequencies of the (nu)(sub 3) and (nu)(sub 4) phonon absorption...

) radicals in low temperature silane matrices David Sillars a , Chris J. Bennett a , Yoshihiro Osamura b temperature silane matrices at 10 K upon an irradiation of the silane matrices with mono energetic electrons. We were able to ob- serve absorptions of the umbrella modes at 843 (silane matrix) and at 621 cm�1 (d

The techniques and methods employed in the spectroscopic characterization of gases, liquids, and solids in the terahertz frequency range are reviewed. Terahertz time-domain spectroscopy is applied to address a broadband frequency range between 100?GHz and 5?THz with a sub-10?GHz frequency resolution. The unique spectral absorption ...

. Membrane proteins, lipids and detergents--not just a soap opera: lipid-protein interactions. Biochim (strain 10050) in detergent micelles and reconstituted into lipid membranes have been studied by single by nondenaturing detergents, such as LDAO, there is a small 2-nm spectral shift of the B850 absorption band

State-of-the-art spectroscopic models of the radiative transitions of interest for Earth re-entry and ground-based diagnostic facilities for aerospace applications are reviewed. The spectral range considered extends from the vacuum ultraviolet to the mid-infrared range (80 nm to 5.5 ?m). The modeling results are compared with absolute intensity measurements of the ...

Self-assembled monolayers (SAMs) on gold substrates were prepared from benzylmercaptan (BM) and para-cyanobenzylmercaptan (pCBM), and the resulting surfaces were investigated using conventional infrared reflection-absorption spectroscopy (IRRAS) as well as polarization modulation infrared reflection-absorption spectroscopy (PM-IRRAS). IRRAS data are ...

PRECISION RADIAL VELOCITIES OF DOUBLE-LINED SPECTROSCOPIC BINARIES WITH AN IODINE ABSORPTION CELL October 15; accepted 2005 February 25 ABSTRACT A spectroscopic technique employing an iodine absorption precision velocities of the spectroscopic double-lined binary HD 4676 to dem- onstrate

Spectroscopic Databases to Support Extrasolar Planet Modeling ... Line List Database: Brown and Butler have worked to collect line lists and absorption ...

Metastable Mn-peroxo species are proposed to form as key intermediates in biological oxidation reactions involving O(2) and C-H bond activation. The majority of these have yet to be spectroscopically characterized, and their inherent instability, in most cases, precludes structural characterization. Cysteinate-ligated metal-peroxos ...

Retinal diseases like age-related macular degeneration have become an important cause of visual loss depending on increasing life expectancy and lifestyle habits. Due to the fact that no satisfying treatment exists, early diagnosis and prevention are the only possibilities to stop the degeneration. The protein cytochrome c (cyt c) is a suitable marker for degeneration processes and apoptosis ...

This paper reports the ?-A isotherm and spectroscopic characterizations of mixed Langmuir and Langmuir-Blodgett films of a nonamphiphilic thiophene derivative, namely, 2,5-Bis (5-tert-butyl-benzoxazolyl)-thiophene (BBOT) molecules, mixed with polymethyl methacrylate (PMMA) and stearic acid (SA). The ?-A isotherms and molefraction vs. area per molecule ...

This research involves the use of laser spectroscopy techniques such as four-wave mixing, multiphoton absorption, time-resolved site-selection spectroscopy, and holography to characterize dynamical optical processes such as energy transfer, exciton migration, radiation less relaxation, and the photorefractive effect. In addition, a significant effort was ...

Pascoite mineral having yellow-orange colour of Colorado, USA origin has been characterized by EPR, optical and NIR spectroscopy. The colour dark red-orange to yellow-orange colour of the pascoite indicates that the mineral contain mixed valency of vanadium. The optical spectrum exhibits a number of electronic bands due to presence of VO(II) ions in the mineral. From EPR ...

Congruent Ce(0.1 wt%):Cu(0.05 wt%):LiNbO3 single crystals doped with 0, 1, 3, 4, 5, 6 mol% MgO respectively were grown by the Czochrolski method in air along the C direction. The inductively coupled plasma optical emission/mass spectrometry (ICP-OE/MS), the X-ray powder diffraction (XRD), the differential thermal analysis (DTA), the ultraviolet-visible (UV-Vis) absorption ...

Page 1. Characterization of the Absorption Wave Produced ... Characterization of the Absorption Wave Produced by CO2 Laser Ablation of a Solid ...

The temperature in the strong absorbing cloud surrounding the luminous propellant gas near the mouth of a rifle was measured as a function of time using emission and absorption spectroscopic techniques. The strong absorption in the cold part of the gas cl...

The phenothiazine phenylene isoalloxazine dyad, 3-methyl-10-[4-(10-heptyl-10H-phenothiazin-3-yl)-phenyl]-10H-benzo[g]pteridine-2,4-dione, dissolved in either dichloromethane or acetonitrile is characterized by absorption and emission spectroscopy. Absorption cross-section spectra, stimulated emission cross-section spectra, fluorescence ...

... resonance (EPR), and (7)Li solid state nuclear magnetic resonance (NMR ... extended x-ray absorption fine structure shows that the local symmetry of ...

Absorption and Radiation Activities and Demonstration Video ... This activity investigates the effect surface color has on heat absorption and radiation. ... unit calls for students to build simple spectroscopes to study visible light. ...

... A DESIRED ABSORPTION LINE AND A MEASUREMENT CELL WHERE THE ... GAS TRACE MONITORING IN RESPIRATION MAY PROVE TO BE ...

Spectral line parameters that have absorption features within the HCl and HF channels of the Halogen

... The Ultraviolet Reflection-Absorption Spectroscopy (UVRAS) method has important advantages for in-situ studies of processing environments. ...

... GLASS, IONS, SYMPOSIA, AMORPHOUS MATERIALS, LIGHT TRANSMISSION, ABSORPTION SPECTRA, LUMINESCENCE, SAMARIUM, ...

... Report Date : 30 JUN 1970. Pagination or Media Count : 52. Abstract : The absorption spectra of mercury in argon, krypton, xenon, and nitrogen ...

... In particular, you have provided analytical data including gas chromatographic, atomic absorption spectroscopic, and spectrophotometric data demonstrating that ...

The effective level of line formation for spectroscopic absorption lines has long been regarded as a

... A theoretical model to include self absorption by heme-molecules has been developed to understand the spectroscopic differences between ...

... molecule assumes an independent phase. The energies of the assembly ... (1) A source of radiant microwave energy (2) An absorption cell ...

High throughput screening methodologies are expanded to synchrotron based x-ray absorption techniques. An environmental chamber, based on ultra-high vacuum equipment, has been developed allowing in situ studies on arrays of samples while X-ray absorption fine structure spectroscopy, Raman spectroscopy, mass spectrometry and/or X-ray diffraction can be ...

High throughput screening methodologies are expanded to synchrotron based x-ray absorption techniques. An environmental chamber, based on ultra-high vacuum equipment, has been developed allowing in situ studies on arrays of samples while X-ray absorption fine structure spectroscopy, Raman spectroscopy, mass spectrometry and/or X-ray diffraction can be ...

Advanced spectroscopic techniques provide new and unique tools for unraveling the nature of the electronic structure of actinide materials. Inelastic neutron scattering experiments that address temporal aspects of lattice and magnetic fluctuations, probe electromagnetic multipole interactions and the coupling between electronic and vibrational degrees of freedom. Nuclear ...