We present a study of the ability of the Fermi Gamma-ray Space Telescope to detect dark matter (DM) annihilation signals from the Galactic subhalos predicted by the Via Lactea II N-body simulation. We implement an improved formalism for estimating the boost factor needed to account for the effect of DM clumping on scales below the resolution of the simulation, and we incorporate a detailed Mont...

Johnson–Cook (J-C) material model is often used for Finite Element (FE) modeling of cutting processes and it affects significantly the results of simulation. Since experimentally determination of J-C equation parameters is an expensive and time-consuming task, in this paper, a new and efficient methodology was implemented based on the evolutionary optimization algorithm to identify new J-C mate...

The cyclic oxidation resistance at 900 °C of the alloy 718 produced by laser beam melting and electron was compared to that wrought-718 alloy. Results showed large differences regarding rate oxide layer spallation. wrought presents much more adherent scale. Moreover, standard heat treatment surface grinding slightly delay catastrophic role sulfur manganese on adhesion scale is quantitatively di...

INHIBITION AND STRUCTURE OF TOXOPLASMA GONDII PURINE 1 NUCLEOSIDE PHOSPHORYLASE 2 3 4 Running title: Toxoplasma gondii purine nucleoside phosphorylase 5 6 Teraya M. Donaldson, María B. Cassera, Meng-Chiao Ho, Chenyang Zhan, 7 Emilio F. Merino, Gary B. Evans, Peter C. Tyler, Steven C. Almo, Vern L. 8 Schramm, and Kami Kim d, # 9 10 From the Departments of Microbiology and Immunology, Biochemistr...

INHIBITION AND STRUCTURE OF TOXOPLASMA GONDII PURINE 1 NUCLEOSIDE PHOSPHORYLASE 2 3 4 Running title: Toxoplasma gondii purine nucleoside phosphorylase 5 6 Teraya M. Donaldson, María B. Cassera, Meng-Chiao Ho, Chenyang Zhan, 7 Emilio F. Merino, Gary B. Evans, Peter C. Tyler, Steven C. Almo, Vern L. 8 Schramm, and Kami Kim d, # 9 10 From the Departments of Microbiology and Immunology, Biochemistr...

The as-cast alloy 718 shows a multiphasic structure which consists of dendrites, carbides and Laves phases. The amount, size, shape, and dispersion of these phases affect the properties and the processing which follows, This structure was characterized by measurements of volume fraction, size, dispersion, and shape factor of carbide and Laves phases. Secondary arm spacing and Vickers hardness w...

Inconel 718 is a Ni-Cr-Fe superalloy which presents excellent mechanical properties at high temperatures, as well as good corrosion resistance and weldability. These characteristics can be optimized with an appropriate control of microstructural features such as grain size and precipitation. Precipitates of different nature can form in these alloys, i.e. γ’’ (a metastable metallic compound Ni3N...

The overall objective of this work has been to develop and evaluate tools for designing against fatigue in gas turbine applications, with special focus on the nickelbased superalloy Inconel 718. The fatigue crack propagation behaviour under high temperature hold times has been studied. Firstly, the main fatigue crack propagation phenomena have been investigated with the aim of setting up a basi...