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.
Results
Showing 1 to 7 of 7 for “"metal compositions"”.
-
Treatment options for patients with allergies to metals and metal composites - laboratory composite constructions on natural teeth and implants // Възможности за лечение на пациенти с алергии към метали и сплави, с конструкции от лабораторни композити върху естествени зъби и имплантати
Patients allergic to metals and metal compositions represent a serious challenge for the dentist. The heterogeneity of allergic reactions makes diagnostics and solution a complex task. Metal compositions for prosthetic treatment are extremely strong allergenic factor. Well conducted prosthetic …
-
Synthesis and Characterization of Pt-Ru-Sn Catalysts
<p>Magnesia-supported trimetallic Pt-Ru-Sn catalysts prepared through a cluster and a conventional synthetic route have been investigated in terms of their structural properties and their catalytic activity for the hydrogenation of citral and crotonaldehyde. FTIR results indicate that the majority …
-
Searching for the origins of early Islamic brass-making in Western Asia
… AD, brass emerged as a major form of Islamic metalworking, with the production of highly decorated objects in a variety of forms and styles. However, we know comparatively little about the background to this development, and particularly its association with earlier brass-making in Europe and …
-
Elemental Effects of Fe, Mo, C, and Hf (or Nb) on Solidification Behavior, Microstructure, and Weldability of High-Cr, Ni-base Filler Metals
… cracking in Ni-Cr-Fe base materials and filler metals has led to increased Cr, Nb, and Mo contents in these alloys, respectively. Nb additions however, have resulted in a significant increase in the solidification cracking susceptibility of Ni-Cr-Fe-Nb filler metals, especially when dissimilar …
-
Compositional engineering of solution-processed solar cells : aligning computational and experimental screening strategies
… (FDTD) calculations, many different active layer compositions were screened through to identify optimal optical configurations and predict performance trends. The results of this analysis informed the fabrication of actual solar cells, which generated photocurrent and external quantum efficiency …
-
Mechanistic insights into the direct synthesis of H2O2 on transition metal catalysts
… over direct synthesis to H2O2 on most transition metal catalysts, and so significant research has been directed towards improving catalyst selectivity towards H2O2 through various methods. Despite significant research, the mechanism of this reaction, and the reasons for the importance of seemingly …
-
Siderophile Element Partitioning at high Pressures and Temperatures : Implications for Core Formation Processes
… the Earth´s core by core formation processes. Metal – silicate partitioning of siderophile elements can provide major constraints on the conditions that prevailed during core formation of the Earth because partitioning is dependent on pressure, temperature, oxygen fugacity and the silicate and …