The Su(var)3-7 protein is essential for fly viability, and several lines of evidence support its key importance in heterochromatin formation: it binds to pericentric heterochromatin, it potently suppresses variegation and it interacts with HP1. However, the mode of action of Su(var)3-7 is poorly understood. Here we investigate in vivo the consequences of increased Su(var)3-7 expression on fly v...

Throughout the animal kingdom, the Notch signalling pathway allows cells to acquire diversified cell fates. Notch signals are translated into activation of Notch target genes by CSL transcription factors. In the absence of Notch signals, CSL together with co-repressors functions as a transcriptional repressor. In Drosophila, repression of Notch target genes involves the CSL homologue Suppressor...

The form of the most general orbifold breaking of gauge, global and supersymmetries with a single extra dimension is given. In certain theories the Higgs boson mass is ultraviolet finite due to an unbroken local supersymmetry, which is explicitly exhibited. We construct: a 1 parameter SU(3)×SU(2)×U(1) theory with 1 bulk Higgs hypermultiplet, a 2 parameter SU(3)×SU(2)×U(1) theory with 2 bulk Hig...

This study proposed a natural-rule-based-connection (NRBC) method to connect river segments after water body detection from remotely sensed imagery. A complete river network is important for many hydrological applications. While water body detection methods using remote sensing are well-developed, less attention has been paid to connect discontinuous river segments and form a complete river net...

In theory, there is nothing so practical as a good theory. When it comes to substance use (su) there is no shortage of theories (Flay, Petraitis, & Miller, 1995). In fact, Lettieri, Sayers, and Pearson (1980) reviewed 43 different theories of su 20 years ago, and the list has grown measurably since then. Unfortunately, there is a gap between su theories and su prevention. Years of work developi...

Freshwater populations of three-spined sticklebacks (Gasterosteus aculeatus) in northern Germany are found as distinct lake and river ecotypes. Adaptation to habitat-specific parasites might influence immune capabilities of stickleback ecotypes. Here, naive laboratory-bred sticklebacks from lake and river populations were exposed reciprocally to parasite environments in a lake and a river habit...

Aims Factors limiting distributions of species are fundamental to ecology and evolution but have rarely been addressed experimentally for multiple species. The conspicuous linear distribution patterns of plant species confined to river corridors in the Central European lowlands constitute an especially long-standing distribution puzzle. We experimentally tested our novel hypothesis that the tol...

The carbon isotopic composition (δ13C) of dissolved and particulate inorganic carbon (DIC; PIC) was used to compare and analyze the origin, dynamics and evolution of inorganic carbon in two headwater tributaries of the Xi River, Southwest China. Carbonate dissolution and soil CO2 were regarded as the primary sources of DIC on the basis of δ13CDIC values which varied along the Nanpan and Beipan ...

We propose a fast and memory e cient algorithm for sorting su xes of a text in lexicographic order. It is important to sort su xes because an array of indexes of su xes is called su x array and it is a memory e cient alternative of the su x tree. Sorting su xes is also used for the Burrows-Wheeler transformation in the Block Sorting text compression, therefore fast sorting algorithms are desire...

We propose a fast and memory e cient algorithm for sorting su xes of a text in lexicographic order. It is important to sort su xes because an array of indexes of su xes is called su x array and it is a memory e cient alternative of the su x tree. Sorting su xes is also used for the Burrows-Wheeler transformation in the Block Sorting text compression, therefore fast sorting algorithms are desire...