Short-period super-Earth-sized planets are common. Explaining how they form near their present orbits requires understanding the structure of inner regions protoplanetary discs. Previous studies have argued that hot disc is unstable to magneto-rotational instability (MRI) due thermal ionization potassium, and a local gas pressure maximum forms at outer edge this MRI-active zone. Here we steady-...

From the standpoint of child-bearing, the interest of obstetricians in the female bony pelvis is not limited to pelvic dimension, for morphology of the pelvis is also of importance. Of interest too are those factors which may influence the development of the pelvis during childhood and the pulberal period. When we consider methods which will show pelvic capacity and pelvic morphology in the liv...

[Abridged] Planets and their atmospheres are built from gas solid material in protoplanetary disks. This grows smaller, micron-sized grains to larger sizes the disks, during process of planet formation. Our goal is model compositional evolution volatile ices on different sizes, assuming both time-dependent grain growth several constant sizes. The state-of-the-art Walsh chemical kinetics code ut...

ABSTRACT Thermal disc winds occur in many contexts and may be particularly important to the secular evolution dispersal of protoplanetary discs heated by high energy radiation from their central star. In this paper, we generalize previous models self-similar thermal – which have self-consistent morphology variation flow variables case launch an elevated base non-isothermal conditions. These sol...

Temperature time traces are obtained in turbulent thermal convection at high Rayleigh numbers. Measurements are made in the midplane of the apparatus, near the sidewall but outside the boundary layer. A telegraph approximation for temperature traces is generated by setting the fluctuation amplitude to 1 or 0 depending on whether or not it exceeds the mean value. Unlike the standard diagnostics ...

In this paper, we describe the nonlinear outcome of spiral shocks in protoplan-etary disks. Spiral shocks, for most protoplanetary disk conditions, create a loss of vertical force balance in the post-shock region and result in rapid expansion of the gas perpendicular to the disk midplane. This expansion has characteristics similar to hydraulic jumps, which occur in incompressible fluids. We pre...

The next generation of compute servers will be based on clusters of compute blades integrated within a common chassis The integration of advanced networking functions within the chassis promises to simplify the deployment of servers on a large scale by eliminating the need to deploy external inter-network devices on a oneto-one basis (e.g., one or more network ports per server). This paper exam...

Propagation of flexural localized vibration modes along edges of anisotropic wedges is considered in the framework of the geometrical-acoustics approach. Its application allows for straightforward evaluation of the wedge-mode velocities in the general case of arbitrary elastic anisotropy. The velocities depend on the wedge apex angle and on the mode number in the same way as in the isotropic ca...

Neutronics and activation calculations have been performed for the FIRE design with different first wall design options. Modest values of nuclear heating occur in the machine components. Magnet insulators that have radiation tolerance to 150 MGy should be used. The operational schedule allows for decay of short-lived radionuclides between pulses resulting in low levels of activity and decay hea...

We investigate the linear growth and vertical structure of the magnetorotational instability (MRI) in weakly ionised, stratified protoplanetary discs. The magnetic field is initially vertical and dust grains are assumed to be well mixed with the gas over the entire vertical dimension of the disc. For simplicity, all the grains are assumed to have the same radius (a = 0.1, 1 or 3 μm) and constit...