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 5577 for “"Mg"”.
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Investigation of Alignment Dynamics in Mg-Ne and Mg-Ar Two-Photon Fractional Collisions
… resonances of Mg where strong collisions with rare gas atoms induce transitions between corresponding molecular states. The alignment produced in the intermediate state by the first excitation is probed by the second laser as a function of relative linear laser …
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Understanding the deposition of Mg and intercalation of Mg2+ for future Mg-ion batteries
This Thesis was approved for publication on 2015-04-27 at 10:01.
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Endurnýjun á borholu MG-34
Þetta verkefni er um endurnýjun á rafbúnaði í heitavatns borholu hjá Veitur ohf. Með snjallvæðingu rafbúnaðar má t.d. nota stýrivélar fyrir betra eftirlit og einfaldari bilanagreiningu.
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Strukturell komplexe intermetallische Phasen : Untersuchungen an binären und ternären Phasen der Systeme Ag-Mg und Ag-Ga-Mg
… Intermetallische Phasen (KIP) in den Systemen Ag-Mg und Ag-Ga-Mg dargestellt und charakterisiert. KIP sind Verbindungen, die sich grundlegend von einfachen Metallen unterscheiden. Große Elementarzellen, ein hierarchisch strukturierter Aufbau und inhärente Fehlordnung sind wesentliche …
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Studies into Mg-preconditioning of brewer’s yeasts
… which were physiologically “preconditioned” with Mg ions, had improved fermentative output and stress tolerance. Ale and lager yeast cells preconditioned in the presence of elevated levels of Mg-actate, yielded highest cellular Mg contents in malt extract broth and dilute brewer’s wort media. …
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Burn time measurements of micron sized Al-Mg alloys and Mg in a heterogeneous shock tube in different oxidizing environments
… Majority of the work performed in the past on Mg and Mg-Al alloys has been performed with coarse particles (>50 μm), which tend to have burn times in the 1-100 milliseconds. Work on single aluminum particles below 10 microns has shown a transitional regime. This marks the shift from diffusion …
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Effects of Mg²⁺ pretreatment and the modulation of Mg²⁺-sensitive cardiac ion channels on Ca²⁺ paradox phenomenon in the heart
… of this study was to investigate the effects of Mg²⁺ pretreatment and of pharmacological inhibitors of TRPM7 channels on CP-induced cardiac injury in the isolated rat heart.
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Strength modelling of Al-Cu-Mg Type alloys
Age hardening of Al-Cu-Mg type alloys occurs in two stages separated by a constant hardness plateau when the alloys are aged at 110°C to 240?C after solution treatment and quenching. This work aims to develop a physically based two-stage hardening model to predict the yield strength of Al-Cu-Mg …
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CARBON STRUCTURES AND Mg-BASED MATERIALS FOR GAS SORPTION
… greenhouse gas emissions is carbon capture. Mgbased materials have been considered as a promising hydrogen storage system due to their high hydrogen capacity (up to 7.6 wt.%), high abundance, low cost and lightweight. Different carbon structures have also drawn considerable interests for …
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Dilemas da agricultura familiar irrigada no Projeto Jaíba, MG
Concebido na década de 70, o Projeto Jaíba constitui hoje o maior projeto público de irrigação em área contínua da América Latina. Trata-se de um mega empreendimento que até os dias atuais ainda não trouxe o retorno esperado. De uma forma geral, pode-se notar que existe muita contradição quando se …
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Surface studies of Li-ion and Mg battery electrodes
… on studies of the surfaces of both Li-ion and Mg-ion battery electrodes. A fundamental understanding of processes occurring at the electrode surface is vital to the development of advanced battery systems. Additionally, modifications to the electrode surfaces are made and further characterized …
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Strength and ductility of Mg alloys from first-principles
… due to their high specific strength. However, Mg has limited ductility at room temperature due to a high strength anisotropy (~100:1). Thus, forming is performed at ~300°C where the anisotropy is reduced to 4:1. In this work, we investigate the effects of 63 substitutional solutes on basal and …
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Identification of radio sources in the MG-VLA survey
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
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Corrosion resistant CMZP and Mg-Al2TiO5coatings for SiC ceramics
Thin film coatings of (Cao.6Mg0.4)Zr4(P04)6 (CMZP) and Mg stabilized AhTiOs ( Mg-Ah Ti05 ) on dense SiC substrates were investigated using sol-gel coating techniques. The thickness and quality of both CMZP and Mg-Ah Ti05 coatings were found to depend on the solution concentration and lift rate. …
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The development and characterization of lightweight (CA,MG) ceramics
Lightweight (Ca,Mg)Zr₄(PO₄)₆(CMZP) ceramics have been fabricated with relative densities (P<sub>lightweight</sub>/p<sub>dense</sub>) of less than 0.35 by the polymer foam technique, and higher than 0.35 by the polymer powder technique. The polymer powder method forms an inhomogeneous pore structure …
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Thermodynamics and kinetics of Mg intercalation for multivalent cathode applications
… pairs an energy-dense MV metal anode (such as Mg) with a high voltage cathode has the potential to surpass the energy densities achieved by current Li-ion batteries, along with improved safety and lower costs. However, moving into newer chemistries leads to newer challenges, such as developing …
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Studies of resonance in ²³Na, ²⁶Mg, ⁴¹K, ⁵⁵Mn and ⁵⁹Co
The isotopes ²³Na, ²⁶Mg, ⁴¹K, ⁵⁵Mn and ⁵⁹Co were activated by the use of a well collimated, ¹⁰B filtered neutron beam from a reactor. An analysis of the induced activity versus ¹⁰B filter thickness permitted studies of individual resonances of the target elements. With the assumption of a "1/E" …
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