Electron acceleration sites in a large-scale coronal structure

Radio observations and interplanetary particle measurements have shown that even in the absence of conspicuous violent processes in the low atmosphere (such as Hα flares) electrons are accelerated in the corona, most likely at higher altitudes than during flares (≥0.5 R above the photosphere). The paper presents direct evidence on the acceleration sites from a case study of radio, visible light and soft X-ray observations: electrons are repeatedly accelerated in a large-scale coronal structure which is identified with a streamer in coronographic observations. Energy is simultaneously released in an active region near the base of the structure and at a height of ∼1 R , over several hours before the large-scale structure erupts. Energy input is observed in at least two emerging active regions underneath the streamer. The coronal configuration is three-dimensional, overlying a whole quadrant of the Sun. It is argued that the observations trace multiple sites of energy release presumably in current sheets embedded within the streamer, in agreement with scenarios developed for the acceleration of electrons seen in the corona and at 1 AU, and for the evolution of large-scale coronal structures towards eruption

HUNGARIAN SENTENCE INTONATION

this paper differs from the usual mechanisms like Tone Mapping (Williams 1971), Well-Formedness Conditions (Goldsmith 1976), etc. essentially only in having this `once only' property. (1) Association Algorith

The complete plastome of Hyacinthoides non-scripta (L.) Chouard ex Rothm. (Asparagaceae)

The whole plastome sequence ofHyacinthoides non-scripta, was assembled and annotated in this study.This is the first complete plastid genome for the genusHyacinthoides. The plastome is 155,035 bp longand consists of a large single-copy (LSC) region spanning 83,947 bp, a small single-copy (SSC) regionspanning 18,496bp, and two inverted repeat (IR) regions, each of which is 26,296bp in length. Thereare 132 genes annotated in the plastome, of which the protein-coding geneinfAhas pseudogenized

Near surface mounted FRP reinforcement for strengthening of concrete structures

This paper is based on literature review regarding fibre reinforced polymers (FRP) used as near surface mounted (NSM) reinforcement for strengthening of concrete structures. Strengthening of structures is a complex task. Different systems can be used in order to utilize the fibre reinforced polymer in the most efficient way. Near surface mounted reinforcement is practical alternative to externally bounded reinforcement while it has many advantages

Mahler's work on Diophantine equations and subsequent developments

We discuss Mahler's work on Diophantine approximation and its applications to Diophantine equations, in particular Thue-Mahler equations, S-unit equations and S-integral points on elliptic curves, and go into later developments concerning the number of solutions to Thue-Mahler equations and effective finiteness results for Thue-Mahler equations. For the latter we need estimates for p-adic logarithmic forms, which may be viewed as an outgrowth of Mahler's work on the p-adic Gel'fond-Schneider theorem. We also go briefly into decomposable form equations, these are certain higher dimensional generalizations of Thue-Mahler equations.Comment: 26 pages. This paper will appear in "Mahler Selecta", a volume dedicated to the work of Kurt Mahler and its impac