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Dissertations / Theses on the topic 'Infrared spectra and biochemical compounds'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

Brookes, Matthew Daniel. "High resolution infrared spectroscopy of jet-cooled molecules." Thesis, University of Oxford, 1995. http://ora.ox.ac.uk/objects/uuid:81958380-6230-454d-bb44-bfb57d887749.

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The development and implementation of a high resolution, direct absorption, rapidscanning infrared diode laser spectrometer incorporating a supersonic jet expansion source is described. High sensitivity is achieved by directly modulating absorption signals at frequencies in excess of 50 kHz, enabling their separation from lower frequency mechanical and diode 1/f noise. This is accomplished by rapidly scanning the diode laser across a small frequency window (~0.5-1.5cm<sup>-1</sup>) synchronously with a pulsed supersonic expansion in a time period of 1 or 2 ms. Absorptions appear as small atten

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2

Lyne, Michael Peter. "High resolution spectroscopy of aminoborane and niobium nitride." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26442.

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The infrared spectrum of aminoborane (NH₂BH₂) was recorded by a Fourier transform interferometer and the 1550-1750 cm⁻¹ region of the spectrum was rotationally analyzed by a new search/match algorithm based on ground state combination differences. Sub-bands from four separate vibrational bands were discovered in this region. The interaction scheme was deduced to be a three-way anharmonic resonance between the V₃, V₇ + VB, and 2v₆ levels with the fourth level, V₆ + V₁₂ induced by a Coriolis mechanism with the members of the triad. The first order anharmonic constants were approximated by a leas

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3

Hardaway, Harvey Royston. "Spectroscopic studies of InAs/InAsSb heterostructure light-emitting diodes for the mid-infrared region." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322199.

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4

Sun, Xue-Zhong. "Fast infrared spectroscopy in supercritical fluids." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311743.

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5

Pan, Chunhua Durig James R. "Raman and infrared spectra, conformational stability, normal coordinate analysis, vibrational assignment and ab initio calculations of some silicon or germanium containing compounds." Diss., UMK access, 2005.

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Thesis (Ph. D.)--Dept. of Chemistry and School of Computing and Engineering. University of Missouri--Kansas City, 2005.<br>"A dissertation in chemistry and computer networking." Advisor: James R. Durig. Typescript. Vita. Description based on contents viewed Nov. 21, 2007; title from "catalog record" of the print edition. Includes bibliographical references (leaves 415-424). Online version of the print edition.

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6

Sano, Mitsuru, Takashi Hibino, Atsuko Tomita, Pilwon Heo, Toshio Kamiya, and Masahiro Nagao. "Proton Conduction in In^3 + -Doped SnP2O7 at Intermediate Temperatures." The Electrochemical Society, 2006. http://hdl.handle.net/2237/18425.

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7

Zheng, Chao Durig James R. "Conformational stability from temperature-dependent infrared spectra of noble gas solutions, normal coordinate analyses, adjusted r₀ structural parameters and barrier to internal rotation of some substituted amine, hydrazine and three-membered ring compounds." Diss., UMK access, 2006.

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Thesis (Ph. D.)--Dept. of Chemistry and Dept. of Physics. University of Missouri--Kansas City, 2006.<br>"A dissertation in chemistry and physics." Advisor: James R. Durig. Typescript. Vita. Description based on contents viewed Jan. 29, 2007; title from "catalog record" of the print edition. Includes bibliographical references (leaves 447-460). Online version of the print edition.

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8

Smith, Fiona Elizabeth. "Observation of the infrared spectrum of the doubly charged molecular ion D'3'7Cl'2'+." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323488.

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9

Clowes, Steven Kenneth. "Experimental studies of surface-adsorbate interactions and surface magnetism." Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323531.

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10

Chen, Ping. "Intermediate phases, boson and floppy modes, and demixing of network structures of binary As-S and As-Se glasses." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1250689099.

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11

Azevedo, Luiz Otavio Roffee. "Infra-Red Spectrophotometry and X-Ray Diffractometry as Tools in the Study of Nickel Laterites." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/231213.

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Nickel silicate laterite deposits developed on ultra-mafic rocks are similar in many general respects but they vary considerably in detail. The mineralogy of these surficial deposits is very complex and difficult to determine because of the fine grained nature and solid solution characteristics of the hydrous secondary minerals and because many of the phases are actually mineraloids that are poorly ordered or amorphous. To try some new approaches toward clarification of these phases, 24 samples from New Caledonia and Puerto Rico ranging from the ophiolite-ultramafic olivine-pyroxene-chromite-s

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12

PERMOGOROV, DMITRI. "Spectroscopie intracavite laser des transitions harmoniques du methane, silane, germane et de leurs derives deuteres dans les domaines visible et proche infrarouge." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10074.

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Nos resultats experimentaux concernant la spectroscopie d'absorption intracavite laser (iclas) de petites molecules polyatomiques dans les domaines visible et proche infrarouge ont mis en evidence certaines caracteristiques propres d'etats vibrationnels tres excites de ces molecules. Les spectres iclas des transitions harmoniques v=6, 7, 8 de silane, des trois isotopomeres les plus abondants du germane naturel et de ses derives deuteres ont ete obtenus a haute resolution. L'hamiltonien du modele local decrit dans cette these ne dependant que de trois parametres effectifs independants de la var

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13

Mandray, Ariane. "Etude magnéto-optique de centres D- confinés dans des multi-puits quantiques GaAs/AlGaAs." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10075.

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Le centre d#-, ou ion donneur negatif, est l'analogue en physique du solide de l'ion hydrogene negatif h#-. Il s'agit donc d'un systeme correle simple, avec seulement deux electrons. Les transitions magneto-optiques permettant l'etude des donneurs peu profonds (neutres ou charges negativement) dans les multi-puits gaas/algaas se situent dans la gamme de l'infra-rouge lointain. Notre appareillage experimental est essentiellement constitue d'un spectrometre a transformee de fourier, couple a un aimant supraconducteur ou resistif. Nous avons etudie le mecanisme de formation des centres d#- confin

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14

Martinet, Christine. "Oxydation du silicium par plasma d'oxygène : Cinétiques de croissance et analyses physiques des couches." Université Joseph Fourier (Grenoble ; 1971-2015), 1995. http://www.theses.fr/1995GRE10162.

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Ce travail est consacre a l'etude de l'oxyde de silicium realise par oxydation plasma a basse temperature dans un reacteur a resonance cyclotronique electronique repartie. Nous nous sommes interesses aux cinetiques de croissance en anodisation plasma (tension appliquee au substrat superieure au potentiel plasma) a courant constant qui decrivent bien un modele de diffusion d'ions o#- assistee champ. Mais, nous avons mis en evidence l'existence d'un premier regime, ou la tension reste constante, qui correspondrait a la formation d'une couche conductrice d'epaisseur 10-15 nm due aux photons u. V.

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15

Bryant, Glenn Walter Ross. "High resolution infrared spectroscopy of molecular clusters." Phd thesis, 1989. http://hdl.handle.net/1885/140123.

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