• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1026
  • 290
  • 155
  • 140
  • 61
  • 51
  • 32
  • 26
  • 24
  • 22
  • 18
  • 5
  • 5
  • 5
  • 5
  • Tagged with
  • 2249
  • 847
  • 556
  • 482
  • 314
  • 252
  • 232
  • 212
  • 181
  • 168
  • 151
  • 145
  • 140
  • 133
  • 126
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Computational mechanistic studies of chiral lithium amide induced enantioselective rearrangements and superacid activation of methane /

Nilsson Lill, Sten O. January 2001 (has links)
Doctoral thesis--organic chemistry--Göteborg university, 2001. / Bibliogr. p. 123-155.
2

Etude théorique de la structure et la réactivité d'agrégats mixtes d'organolithiens

Khartabil, Hassan Ruiz-Lopez, Manuel F.. January 2008 (has links) (PDF)
Thèse de doctorat : Chimie Informatique et Théorique : Nancy 1 : 2008. / Titre provenant de l'écran-titre.
3

Proton bombardment of the lithium isotopes

Bashkin, Stanley. January 1950 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1950. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
4

The isotope shift in the first spectrum of atomic lithium

Hughes, Raymond Hargett, January 1954 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1954. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
5

Eine neue Trennungsmethode des Lithiums von anderen Alkalimetallen

Feigenberg, Berko, January 1905 (has links)
Inaug.-Diss.--Berlin. / Vita.
6

Du lithium, de ses sels et de leur application en médecine. Ate Lacote.

Lacote, Ate. January 1869 (has links)
Th.--Méd.--Montpellier, 1869. / Montpellier, 1869. tom. 2 N ° 21.
7

Recherches sur le lithium et ses composés ; Propositions de physique données par la Faculté : thèses présentées à la Faculté des sciences de Paris pour obtenir le grade de docteur ès sciences soutenues le 17 juin 1857 devant la Commission d'examen /

Troost, Louis, January 1857 (has links)
Th. doct.--Chimie--Paris--Faculté des sciences, 1857.
8

Exploratory study of ionophoric spiroethers and spiroketals

Selvaraj, Peter Rajan, January 2006 (has links)
Thesis (Ph. D.)--Ohio State University, 2006. / Title from first page of PDF file. Includes bibliographical references (p. 148-156).
9

Lithium isotope effects on the physical and chemical properties of lithium alkyls

Glaze, William. January 1961 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1961. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
10

SURFACE REACTIONS AND SURFACE ANALYSIS OF LITHIUM METAL AND ITS COMPOUNDS STUDIED BY AUGER ELECTRON SPECTROSCOPY, X-RAY PHOTOELECTRON SPECTROSCOPY AND RUTHERFORD BACKSCATTERING SPECTROMETRY (THERMAL BATTERIES).

Burrow, Bradley James January 1984 (has links)
The development of analysis techniques necessary for the quantitative, chemical surface analysis of lithium-containing solids important in the construction of high energy density batteries is presented. Electron beam damage is discovered to be the source of apparent lithium metal formation in Li(ls) XPS spectra of lithium salts. Beam Damage thresholds of Li₂O, Li₂CO₃ and Li₂SO₄ are calculated using time-dependent Auger spectra, and possible mechanisms are discussed. The variables which affect Auger quantitation are reviewed with particular emphasis on low energy transitions. Two experimental attempts at measuring the instrument response function for the cylindrical mirror analyzer and electron multiplier are discussed. Background correction techniques proposed in the literature are compared using synthesized Auger data. Auger lineshapes are synthesized by a series of calculations which mimic each step of the Auger electron's path from the atomic core level to the detector. The results indicate that the SIBS (Sequential Inelastic Background Subtraction) method is more applicable to Auger analysis because of its analytical accuracy, speed and ability to handle spectra with poor signal to noise. The special problem of low energy background subtraction is resolved through the use of a new five-parameter function which adequately accounts for the analyzer distortions and secondary cascade in one calculation. Using the above correction techniques, Auger spectra, peak energies, relative intensities and FWHM's of Li₂O, LiOHNH₂O, LiH, Li₃N, Li₂CO₃ and Li₂SO₄NH₂O are presented. Despite special handling techniques, the hydroxide, hydride and nitride reveal extensive oxidation. The oxyanion salts reveal little Li Auger intensity until substantial anion desorption had occurred. The reaction products of lithium with oxygen, water and carbon dioxide are studied by AES. Results indicate the formation of Li₂O, LiOHNH₂O and Li₂O with hydrocarbons, respectively. These results are used to construct a plausible surface structure of the Li-SO₂ interface which explains its stability to self-discharge corrosion and yet maintain electronic conductivity for external discharge. RBS and AES depth profiling are used to analyze potassium-implanted glasses. The results indicate a great deal of ionic migration for glasses which leads to a speculative mechanism for alkali corrosion of glasses.

Page generated in 0.0349 seconds