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 249 for “"520"”.
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The Final Ambush : An Adapted Battlefield Analysis of the U-576 Attack Upon Allied Convoy KS-520 off Cape Hatteras During the Second World War
… battle, the U-boat attack on Allied convoy KS-520 (15 July 1942) as a case study, this thesis seeks to adapt terrestrial battlefield survey techniques to analyze a naval engagement. Drawing from the dominant theoretical and methodological framework utilized by the United States Department of …
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Correlation between homogenisation parameters and property evolution of AA3104 CBS after hot finish rolling
… development. The findings show that the 600°C/520°C condition resulted in coarse dispersoids (127 nm) with low number density (8.93 particles/µm²), the 560°C/520°C condition produced intermediate sized dispersoids (104 nm, 19.85 particles/µm²), and the 520°C condition generated fine, closely …
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Elasticity of Mantle Minerals: Composition, Pressure and Temperature Dependence
… to produce a resolvable discontinuity at 520 km even with a moderate (30--50%) amount of olivine. A single olivine content can explain both the 400 and 520 km discontinuities. High velocity gradients in the transition zone is explained by pyroxene → majorite transition rather than …
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The study of intermetallic particles in aluminium alloy AA3104 can-body stock during homogenisation
… 580⁰C, and the secondary step was performed at 520⁰C. The characterisation process involves particle phase identification using compositional and morphological analysis. A particle extraction setup is then used to extract intermetallic particles from the bulk specimen by dissolving Al matrix in …
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Pulsed Laser Deposition von Er:ZBLAN-Schichten für den Aufbau eines integrierten Wellenleiterlasers im grünen Spektralbereich
… waveguide laser (from 973-975nm into 520-550nm).
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Effect of exogenous hormones on pregnancy maintenance in the prepuberal rat
Seventy five mature and 520 prepuberal Dublin Disease Resistant rats were utilized to study the effects of exogenous hormones upon various reproductive phenomena. Ovulation was induced in 45 day old females by means of PMS and HCG. Progesterone (1.5, 2.5, 3.5, 5.0, or 10.0 mg) was dissolved in …
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Design, Synthesis, Biological Evaluation And Molecular Modeling Studies Of Novel Multifunctional Neuroprotective Drugs For The Treatment Of Parkinson's Disease: An Effort Towards The Improvement Of In Vivo Efficacy And Modulation Of Alpha Synuclein Aggregation Property Of The Neuroprotective Parent
… dependent manner. </p> <p>Compounds D-519 and D-520 were selected as lead molecules from the second series and they exhibited nanomolar to sub nanomolar range affinity at D2/D3 receptors in the receptor binding assay and [35S]GTPγS binding assay. It was concluded from this in vivo study that both …
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Untersuchungen an Hochdruckrelikten im zentralen Menderes Massiv, W Türkei
… diese Bedingungen konnte ein minimales Alter von 520 Ma durch chemische Datierungen an Monaziten einer Augengneisprobe und Pb-Pb Datierungen an Zirkonen einer Augengneis- und Metagabbroprobe bestimmt werden. Dieser amphibolit/granulitfazieller Endpunkt wird mit den Granitintrusionen des zentralen …
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The Impact of Prohexadione-calcium on Grape Vegetative and Reproductive Development and Wine Chemistry
… correlated to higher color intensity (420+520 nm), anthocyanins, total phenols and phenol-free glycosyl-glucose (PFGG). Cabernet franc vegetative and reproductive development was generally not affected yet treatment increased absorbance at 280, 420, and 520 nm, color intensity, anthocyanins …
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Effective tuning of bimetallic composition of gold-copper nanomolecules and the emergence of plasmon-like feature in optical spectra
… eight, a surface plasmon-like peak appears at ∼520 nm. Based on the fundamental, elemental properties of Au and Cu, we predict a mixed atomic ordering and incorporation into the Au12 and Au 42 shells of the proposed icosahedral structured model. Alloy nanomolecules reported here could have …
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Experimental study of the effect of H2O-CO2-NaCl fluid immiscibility on the reaction calcite + quartz + rutile = sphene + CO2 at 2 KBAR
… halite-bearing inclusions. Results from 450-520 °C are listed below.
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Lead-related quantum emitters in diamond
… transitions, including a prominent doublet near 520 nm. The splitting of this doublet, 5.7 THz, exceeds that reported for other group-IV centers. These observations are consistent with the PbV center, which is expected to have the combination of narrow optical transitions and stable spin states, …
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Von Gold Plasmonen und Exzitonen : Synthese, Charakterisierung und Applikationen von Gold Nanopartikeln
… Gold NP zeigen eine Plasmonenbande bei ~ 520 nm, die auf die kollektive Oszillation von Elektronen zurückzuführen ist. Gold NRs weisen aufgrund ihrer anisotropen Form zwei Plasmonenbanden auf, eine transversale Plasmonenbande bei ~ 520 nm und eine longitudinale Plasmonenbande, die vom …
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Detection and attribution of drought and oil-induced plant stress using hyperspectral remote sensing
… 1st derivative reflectance ratio at wavelength 520 nm and 702 nm and the normalized difference vegetation index NDVI (800, 680) showed differences in response to treatment in the oil experiment. The result of both experiments suggests that the 1st derivative ratio at wavelengths 520 nm and 702 …
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Experimental Constraints on Silicate Perovskite Forming Reactions and Elastic Properties: Geophysical Implications for Chemical Heterogeneity in the Deep Mantle
… formation on seismic discontinuity features at 520 km depth in the mantle. The effect of varying composition on the compressibility of magnesium silicate perovskite has been examined in order to understand the geophysical consequences of chemical heterogeneity in the lower mantle. Calorimetric …
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In situ Raman spectroscopy of lanthanum-strontium-cobaltite thin films
… (0%-60% strontium) and temperature (30*C-520°C). Raman shift peaks were identified and correlated with specific vibrational modes. Results were consistent with relevant data, but no transition to the high spin state was observed above 200°C. Compositions were compared to oxygen catalytic …
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Mechanical properties of boride based ceramics
… with increasing temperature, still maintaining 520 MPa at 2100°C. The small WC and SiC addition are believed to aid in the strength retention by the removal of oxide impurities from the microstructure, and in the case of SiC provide some amount of oxidation protection.</p><p>The room temperature …
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Characterization of Moraxella bovis Aspartate Transcarbamoylase
… a class A enzyme with a molecular mass of 480 to 520 kDa. It has a pH optimum of 9.5 and is stable at high temperatures. The ATCase holoenzyme is inhibited by CTP > ATP > UTP. The Km for aspartate is 1.8 mM and the Vmax 1.04 µmol per min, where the Km for carbamoylphosphate is 1.05 mM and the Vmax …
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Geology of the late precambrian Flat River complex and associated volcanic rocks near Durham, North Carolina
… the slate belt volcanicity interval to 130 m.y. (520 to 650 m.y. b.p.) Both subareal and marine depositional environments are represented in the stratigraphic sequence.
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Investigating individuals' motivations to comment on social media news
… to participate in online discussions of news. 520 individuals participated in an online survey. The findings suggest that cognitive factors such as educating others and simplifying complex information to be highly motivating, as well as the presence of controversy in the story or comments. The …
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