A quantitative analysis is presented of the FAST satellite electric field and particle flux data during an EISCAT heating experiment run on 8 October 1998. Radio frequency heating, modulated at 3 Hz, launched ULF waves from the ionosphere into the lower magnetosphere. The ULF waves were observed in FAST data and constituted the first satellite detection of artificially excited Alfvénic ULF wave...

The STEREO/WAVES instrument has detected a very large number of intense voltage pulses. We suggest that these events are produced by impact ionisation of nanoparticles striking the spacecraft at a velocity of the order of magnitude of the solar wind speed. Nanoparticles, which are half-way between micron-sized dust and atomic ions, have such a large charge-to-mass ratio that the electric field ...

In vitro studies have suggested that catabolism of branched chain amino acids is linked with alanine and glutamine formed in, and released from, muscle. To explore this possibility in vivo, static and kinetic studies were performed in three patients with classical, and one patient with partial, branched chain alpha-ketoacid decarboxylase deficiency (maple syrup urine disease, MSUD) and compared...

We derive a Godunov-type numerical flux for the class of strictly convex, homogeneous Hamiltonians that includes H(p; q) = pap2 + bq2 2 pq; 2 < ab: We combine our Godunov numerical fluxes with a simple GaussSeidel type iterations for solving the corresponding Hamilton-Jacobi Equations. The resulting algorithm is fast since it does not require a sorting strategy as does the fast marching method....

A vibrating membrane bioreactor, in which the fouling problems are reduced by vibrating a hollow fiber membrane module, has been tested in constant flux microfiltration above (supra-critical) and below (sub-critical) an experimentally determined critical flux. Suspensions of bakers yeast cells were chosen as filtration medium (dry weight 4 g/l). The influence of extracellular polymeric substanc...

Background: A Boron Neutron Capture Therapy (BNCT) facility, based on a DT neutron generator, with the final goal to find out a potential, alternative, solution to existing BNCT treatment facilities which are based on nuclear reactors is examined. Materials and Methods: With the aim of the MCNP4B Monte Carlo code different beam-shaping assembly (BSA) configurations were considered. Lead was sel...

The transport of Na(+) in mature Eurycea oocytes was studied by quantitative radioautography of (22)Na(+) using techniques suitable for localization of diffusible solutes, together with conventional extractive techniques. Intracellular Na(+) consisted of three kinetic fractions: a cytoplasmic fast fraction of about 8.5 microeq/ml H(2)O; a cytoplasmic slow fraction of about 58.7 microeq/ml H(2)O...