We have analyzed FUSE observations of six hot white dwarf stars: four DA white dwarfs with Teff >∼ 45 000 K, the DAO Feige 55 (Teff ≈ 55 000 K), and the DA CD−38◦ 10980 (Teff ≈ 24 000 K). Photospheric lines from Si IV, PV, and S VI can be observed in the majority of the five hotter objects. Feige 55 shows also several other heavier elements. The measured abundances agree only partly with the pr...

In an increasingly diverse and splintered world, interoperability rules. The ability to leverage code written for another platform means more time and resources for doing new and exciting research instead of reinventing the wheel. Interoperability requires standards, and as the saying goes, the best part of standards is that everyone can have their own. However, in the userspace file system wor...

Selective cell fusion is a natural part of development. It is found in sexually reproducing organisms that require fertilization to propagate and in muscles, placenta, bones, lens of the eye and stem cells. Cell fusion is particularly important in the development of C. elegans: in addition to 300 sperm and oocytes that fuse during fertilization, 300 of the 1090 somatic cells born, fuse througho...

We try to combine the ‘syntactic composition of tree transducers’ [FV98, KV01] on the one hand side and ‘short cut fusion’ [GLP93] on the other hand side. Short cut fusion is based on the ‘cata/build-rule’ [Joh01] or ‘acid rain theorem’ [TM95]. Therefore it is necessary to represent the recursive functions as catamorphisms. A catamorphism is a generalization of the well known list-function fold...

2014 We introduce and study a simple idealized model to describe breaking processes by analysing the current-carrying properties of a random network consisting of insulators and fuses. By increasing the value of the external voltage applied across the network, a sequence of fuses will « burn out » and change irreversible into insultating bonds. This process terminates when a conducting path no ...

Studies of myoblast fusion in Drosophila have revealed numerous signaling and structural proteins that regulate this critical event in muscle development. A paper by Chen et al. published in the September 19 issue of Cell adds ARF6, a GTPase, and one of its guanine nucleotide exchange factors to this set of players.