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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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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.
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Showing 71 to 80 of 3791 (0.088 seconds)Spelling suggestions: "subject:"mass spectrometry."" "subject:"dass spectrometry.""
| 71 |
Assembly and disassembly of protein complexes : insights from mass spectrometryLane, Laura Alexandra January 2010 (has links)
No description available.
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| 72 |
Dissecting the assembly of heterogenous multi-protein complexes using mass spectrometryEbong, Ima-obong Inih January 2013 (has links)
No description available.
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| 73 |
On-line mass spectrometric study of fission fragmentsNikkinen, L. M. January 1977 (has links)
No description available.
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| 74 |
A mass measurement of the short-lived halo nucleus ¹¹Li with the TITAN Penning trap spectrometerSmith, Mathew Jonathon 05 1900 (has links)
New measurements of the masses of the isotopes⁸,⁹,¹¹Li were made using recently commissioned TITAN Penning trap mass spectrometer at TRIUMF. The measurement of the halo nucleus ¹¹Li represents a new standard in Penning trap mass spectrometry, as it is the shortest lived, t₁/₂ = 8.8 ms, isotope ever weighed using this technique. Low energy, E = 20 keV, beams of these radioactive isotopes were produced using the ISAC facility. These were subsequentlycooled and bunched using a square-wave-driven Radio-
Frequency Quadrupole (RFQ) ion guide, which was filled with hydrogen
gas. The cooled ion bunches were then passed into a Penning trap where
the mass measurements were made.
A description of the RFQ in the ISAC hall is given along with some
results from the commissioning of the device. A new set of harmonic deceleration
optics is presented which have been successfully used to inject ions
into the RFQ. Cooling of lithium ions with high DC efficiencies of 20%, in
helium, and 40%, in hydrogen, are shown. Extraction of extremely short
ion bunches, 30 ns FWHM, is also demonstrated. Storage times for stable
lithium ions in helium and hydrogen were investigated. It was found that
lithium ions could be cooled in hydrogen for up to 30 ms without significant
losses whereas cooling in helium lead to exponential losses with a half-life of
5.7(1)ms. The TITAN Penning trap is described and the ⁸,⁹,¹¹Li data presented.
Final values for the mass excess of ∆(⁸Li) = 20945.70(38) keV, ∆(⁹Li) =
24954.80(60) keV and ∆(¹¹Li) = 40728.1(12) keV are obtained. The ⁹,¹¹Li
results are then used to obtain a new value for two neutron separation energy
of ¹¹Li, S₂n = 369.3(1.3) keV. This agrees with the recent measurement from
the MISTRAL spectrometer, 376(5) keV, at the two sigma level, but shows
over three standard deviations from the most recent atomic mass evaluation,
300(20) keV
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| 75 |
Analysis of in situ methylated microbial fatty acids by pyrolysis gas chromatography - mass spectrometryBourne, Thomas Franklin 08 1900 (has links)
No description available.
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| 76 |
Mechanism studies of fast atom bombardment mass spectrometryYin, Jian 12 1900 (has links)
No description available.
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| 77 |
Chromatographic and spectroscopic studies of tetraphenylborate radiolysisWallace, Sheryl Kaye 08 1900 (has links)
No description available.
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| 78 |
Studies with an aerosol generation interface for liquid chromatography-mass spectrometryWilloughby, Ross Clark 08 1900 (has links)
No description available.
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| 79 |
Applications of analytical collisional mass spectrometryNelson, Paul Redfield 12 1900 (has links)
No description available.
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| 80 |
The chemistry of antibiotic X-5108Lovett, Anne Louise 05 1900 (has links)
No description available.
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