We consider the problem of preprocessing an edge-weighted directed graph G to answer queries that ask for the shortest distance from any given node x to any other node y avoiding an arbitrary failed node or link. We describe an oracle (i.e, a simple data structure) for such queries that can be stored in O(n log n) space, and which allows queries to be answered in O(1) time, where n is the numbe...

Abstract As part of the BeSSeL Survey, we have used Very Long Baseline Array to measure 16 trigonometric parallaxes and proper motions molecular masers associated with 14 high-mass star-forming regions in Scutum arm first quadrant Milky Way. This increases number maser sources accurate distances this 42. The can now be traced over a length ≈8 kpc spanning ≈100° Galactic azimuth. We find that la...

In the title compound, [CuBr(2)(C(8)H(22)N(4))], the Cu(II) atom is six-coordinate forming a distorted octa-hedral complex and is bonded to two axial bromide anions and four equatorial nitro-gen donors. The equatorial Cu-N bond distances range from 2.005 (8) to 2.046 (8) Å while the axial Cu-Br distances are 2.8616 (17) and 2.9402 (17) Å, thus the six-coordinate Cu complex shows the usual Jahn-...

Accurate and efficient recognition of splice sites during pre-mRNA splicing is essential for proper transcriptome expression. Splice site usage can be modulated by secondary structures, but it is unclear if this type of modulation is commonly used or occurs to a significant degree with secondary structures forming over long distances. Using phlyogenetic comparisons of intronic sequences among 1...