Commercialised mechanically alloyed yttria dispersion strengthened alloys exhibit unusual recrystallisation behaviour. In spite of their large stored energy content, they tend to recrystallise at temperatures close to melting. The recrystallised microstructure is often very coarse and highly anisotropic, characterised by columnar grains. Such a microstructure is often referred to as being “dire...

A systematic study of high energetic alpha particle interaction with microinstability driven turbulence (ITG) is presented. The alpha particles are considered to be passive, thus not modifying the fine structure of the turbulence, and modelled as Maxwellian distributed. Both the turbulent fields and the evolution of the alpha distribution are computed by means of an Eulerian, flux tube code. It...

so that 861 is of the form 1/2n (n 1) with n = 42. Both these numbers 861 and 42 turn up in very interesting ways in connection with nuclei and elementary particles, as will be shown in the sequel. Also 42 = 6 X 7 and the number 7 also appears frequently in connection with some of these quantities. The quantities concerned are the masses and binding energies of nuclei, both in the ground state ...

A two stage position-sensitive gas proportional counter has been constructed by tightly coupling a Gas Electron Multiplier (GEM) with a Micro-Groove Detector (MGD). The GEM was used as the first amplifying stage and was optimised to transmit close to 100 % of the primary charge even at very high drift fields (10 kV/cm). Very narrow GEM– MGD separations (0–600 m) were used so that the active vol...

In this paper we review the hole argument for the space-time points and elementary particles and we discuss the problem concerning the individuation of the objects in more general settings such that fiber manifolds, natural bundles and local diffeomorphisms, and fibered sets and n-ary relations. ∗Department of Physics and Center for Einstein Studies, Boston University †Department of Mathematics...

It is a common observation that complex systems have a nested or hierarchical structure: they consist of subsystems, which themselves consist of subsystems, and so on, until the simplest components we know, elementary particles. It is also generally accepted that the simpler, smaller components appeared before the more complex, composite systems. Thus, evolution tends to produce more complex sy...

We make use of the well-known properties of spontaneous decays of stationary states of bound systems of elementary particles to support the view that the forces which form these systems propagate instantaneously at the moment of their decay.

Supersymmetric (SUSY) standard models in which the lightest SUSY particle (LSP) is an ultralight gravitino (m3/2 = O(1) eV) are very attractive, since they are free from the cosmological gravitino problems. If the neutralino is the next lightest SUSY particle (NLSP), it decays into a photon and the gravitino in collider experiments. We propose a simple test for the lightness of gravitino at the...

background and aims: virus-like particles (vlps) have been suggested to be a promising recombinant vaccine approach. several studies have reported that the influenza vlps produced in insect cells is an effective vaccine candidate. due to crucial role of matrix m1 protein in assembly and budding of influenza particles, in all vlps structures, m1 protein have been considered as a main component. ...

High temperatures and under pressure (HTP) processing has been used to study the effects of chemical doping in MgB2. ZrB2, TiB2 and NbB2 were selected as additives since, like MgB2, they have an AlB2-type structure and similar lattice parameters. Dy2O3 was selected as it has been reported to generate nanoscale, secondary intragrain phases in MgB2. While C is known to enter the B-sublattice read...