Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1168 for “"Sr"”.
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The Sr⁸⁷/Sr⁸⁶ ratio in oceanic and continental basalts and the origin of igneous rocks
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology, 1961.
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SR proteins in microRNA/mRNA biogenesis
<p>SR proteins are a family of splicing factors involved in the regulation of both constitutive and alternative splicing of pre-mRNAs. Despite years of studies, several big questions still remain: how the expression levels of SR proteins are regulated; what are the underlying mechanisms responsible …
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O mundo virtual do Sr. Nuno
Faz já alguns anos que estou interessado no mundo da realidade virtual e na reprodução de imagens gráficas nos contextos 2D e 3D. Trata-se de um âmbito de especial relevância e de múltiplas possibilidades artísticas, expressivas, comunicativas, didáticas e tecnológicas. Passar da prática manual à …
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Can changes in SR protein acetylation affect alternative splicing?
… tissue and developmental-specific fashion. The misreguation of alternative splicing has been documented in many human diseases. The regulation of alternative splicing involves a complex network of proteins and RNA. Serine-arginine repeat (SR) proteins are a known family of regulatory proteins that …
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Specific heat of Sr₃CuPt₀₅Ir₀.₅O₆ below 1K
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1999.
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Rb-Sr age determination of the carbonaceous chondrite "Murray"
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1964.
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Towards a cryogenic planar ion trap for Sr-88
This thesis describes experiments with ion traps constructed with electrodes in a single two-dimensional plane, and ion traps operated in a cryogenic environment at 77K and 4K temperatures. These two technologies address needs which arise in developing potentially scalable approaches to quantum …
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Serine Starvation Modulates mRNA Splicing Through Depletion of SR Proteins
… the serine/arginine-rich splicing factor (SRSF) proteins that are known regulators of mRNA splicing. Indeed, we have found that translation of the SRSF family member SRSF6 is reduced upon serine starvation in serine auxotrophic cells and contributes to the mRNA splicing changes seen upon …
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Spectrochemical analysis of the Moldavites, Ba, Li, Sr, and Rb
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1964.
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Rb-Sr whole rock age in the Imataca Complex, Venezuela.
Massachusetts Institute of Technology. Dept. of Geology and Geophysics. Thesis. 1966. M.S.
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Travail sur la coopération: crév. de Sr. Marie-du-Sacré-Coeur.
L'auteure s'attarde sur l'origine du mouvement coopératif, jusqu'à la révolution industrielle en première partie, avant de traiter des coopératives en deuxième partie.
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Massenspektrometrie kurzlebiger Sr- und Sn-Isotope und Aufbau der SHIPTRAP-Penningfallen
… die Masse auf direkte Weise bestimmt werden. ^76 Sr ist nun der schwerste N=Z-Kern, dessen Masse genauer als 50 keV bekannt ist. Die ISOLTRAP-Werte für die Massen der untersuchten Nuklide werden mit anderen Werten verglichen, die mit alternativen Meßmethoden ermittelt wurden. Auftretende …
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Whole-rock Rb-Sr studies of volcanics and some related granites
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1963.
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The Preservation of the Colonial Spanish Horse and Robert E. Brislawn, Sr.
… Spanish Horse and</p> <p>Robert E. Brislawn, Sr.</p> <p> In 1493, the Spanish horse importation to the Caribbean islands provided an important stimulus to American exploration as an agent of transportation. In the late nineteenth century, the necessity of horses declined with the advent of …
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Structural, magnetic and electric transport properties of metal substituted La₀.₇Sr₀.₃MnO₃
… properties of substituted perovskites La₀.₇Sr₀.₃MnO₃ (LSMO), we studied th effects of replacing some of the Mn with Ti, Zr, and Cu atoms. The structural, magnetic and electrical phase transitions and transport properties of these compounds were investigated by neutron diffraction, …
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Structural and magnetic properties of Ni and Cr substituted La₀.₇Sr₀.₃MnO₃
<p>"The <em>La₁₋ₓSrₓMn<sub>1-y</sub>B<sub>y</sub>O₃</em> perovskite systems where B represents a 3d transition metal such as Cr, Fe, Co, Ni, Cu, and Zn, are of significant interest due to their large magnetoresistance, and electronic transport properties that change significantly, depending on …
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Πολυφωτονική φασματοσκοπία του Sr-αυτοϊονιζόμενες καταστάσεις με J=3 και διπλός ιονισμός
Focusing one or two dye laser beams in a Sr atomic beam and using a TOF mass spectrometer. A) We have recorded energy level positions and autoionization widths of the odd pavity J=3 states of Sr, in the energy range. Between the 5S1/2 and 4D3/2, 5/2 ionization limits. The analysis of the spectra …
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