Materials Literature
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نورد سرد و آنیل ساختارهایی با درصد بالای مارتنزیت، زیر مجموعه جدیدی از فرآیندهای ترمومکانیکی پیشرفته میباشد که تحت عنوان فرآیند مارتنزیت شناخته شده است. در این تحقیق یک فولاد آلیاژی با ترکیب اسمی Fe-5Ni-10Cr-8Mn (درصد وزنی)در کوره خلاء ریختهگری شد و پس از همگنسازی تحت دو مرحله نورد سرد به میزان%50 و دو مرحله آنیل پ…
Bu makalede; çay atıklarının oduna alternatif bir kaynak olarak yonga ve lif levha gibi kompozit malzemelerin üretilmesinde kullanılabilirliğinin araştırılması amacıyla çay (Camillia Sinensis) atığı ve kızılçam (Pinusbrutia) yonga/lif belirli oranlarda karıştırılıp 5 grup kompozit levha üretilmiş, levhalar üzerinde me…
Despite the many attractive features of carbon fiber reinforced polymers (FRPs) composites, they are prone to failure due to delamination. The ability to tailor the fiber/matrix interface FRPs is crucial to the development of composite materials with enhanced structural performance. In this dissertation, ZnO nanowires…
An electronic unit is required for each CLIC “Two Beam Module”. This study aims to estimate the potential damage due to the prompt radiation to the electronics units installed inside the CLIC Main Linac tunnel. Sets of Monte-Carlo simulations have been done to estimate damage to electronics installed at various locati…
International audience
Polymeric materials are widely used around the world along with high fire hazards due to their flammability. With wide applications of nanotechnology, researchers are currently focusing to develop polymer nanocomposites to enhance their performance in flammability reduction. These flame retardant polymer nanocomposite…
In the family of borate and phosphate, orthoborate lutetium (LuBO3), and lanthanum gadolinium phosphate (LaGdPO4) materials are the new generation materials in optoelectronic devices due to their superior luminescence properties. Some physical and chemical differences occur in nanostructures synthesized by hydrotherma…
The main objective of this work was to identify the effect parameters in the method of material testing have on three constitutive models that are commonly used to predict high strain rate, large strain material behaviour. These are the Goldthorpe path-dependent model, the Goldthorpe-modified Armstrong-Zerilli model a…
The need for safe, secure, and economical storage of radioactive material becomes increasingly important as beneficial uses of radioactive material expand (increases inventory), as political instability rises (increases threat), and as final disposal and treatment facilities are delayed (increases inventory and storag…
A novel reactor design has been proposed for space applications to provide hundreds of watts to one or two kilowatts of electrical power. The reactor concept proposed uses the alloy U10Mo (uranium with 10 weight percent molybdenum) as the fuel. This fuel was selected for its high uranium density, high thermal conducti…
University of Minnesota Ph.D. dissertation. July 2014. Major: Chemistry. Advisor: Theresa Reineke. 1 computer file (PDF); xvii, 202 pages.
Projetos de POO em JAVA
J'aimerais d'abord remercier mon directeur de recherche, professeur Daniel Therriault, pour ses conseils et son aide tout au long de ce projet.J'évolue au Laboratoire de mécanique multi-échelle (LM 2 ), co-dirigé par Prof. Therriault, depuis mon stage au baccalauréat lors de l'été 2010.C'est dans cet environnement, où…
Le présent mémoire décrit le développement d’une méthode de synthèse des hélicènes catalysée par la lumière visible. Les conditions pour la formation de [5]hélicène ont été établies par une optimisation du photocatalyseur, du solvant, du système d’oxydation et du temps réactionnel. Suite aux études mécanistiques préli…
DFT calculations were applied to evaluate the electronic and magnetic properties of zigzag BC2Nnanotubes based on the 13C, 15N, and 11B NMR parameters and natural charge analysis. Weconsidered three types of zigzag nanotubes, ZZ-1, ZZ-2, and ZZ-3 (n, 0) with n = 8, 12, and 14. Theobtained results indicated the divisio…
High strength work materials have tremendous applications in the field of aerospace, nuclear, biomedical, automotive, etc. It is a challenging task to machine these high strength materials. Costly cutting tools are required to machine those materials. Hot machining is another alternative approach for hot machining tho…
During the manufacturing process to the design of modern liquid rocket engines are presented important requirements, such as minimum weight, maximum stiffness and strength of nodes, maximum service life in operation, high reliability and quality of soldered and welded seams. Due to the high quality requirements solder…
The structure and properties of niobapyrimidinium complex were examined by density functional theory method (mpw1pw91). The effect of solvent on the structural parameters, frontier orbital energies and hyperpolarizability (�tot) of this molecule has been explored. The thermodynamic properties of the title compound at…
Understanding and examining the influence of metallic nanoparticles (NPs) on structural and optical properties of phosphate glass has become tremendous topical interests. A series of glasses with composition (78.5-x) P2O5–10Li2O–10ZnO–1.5Er2O3–(x) ZnO (with 0 = x = 1.2 mol%) were prepared using melt quenching techniqu…
Polymer composite nano-fibers including (1, 3 wt %) silver nano-particles have been produced by electrospinning method. Polyacrylonitrile/N,N-dimethylformamide (PAN/DMF) solution have been prepared and the amount of silver nitrate have been adjusted to PAN weight. Silver nano-particles were obtained from reduction of…