Phenoxy acid herbicides and their potential metabolites represent industrial or agricultural waste that impacts groundwater and surface waters through leaching from old landfills throughout the world. Fate assessment of dichlorprop and its putative metabolite 4-CPP (2-(4-chlorophenoxy)propionic acid) is frequently obstructed by inconclusive evidence from redox conditions, heterogeneous geologic...

The Foundation hotspot–Pacific-Antarctic Ridge (PAR) system is the best documented case of a fast spreading ridge approaching a hotspot and interacting with it. The morphology, crustal structure inferred from gravity anomalies and the chemical composition of the lavas of the axial area of the PAR show evidence of the influence of the hotspot, that is presently located roughly 35 km west of the ...

A natural mutational hotspot in the thyA gene of Escherichia coli accounts for over half of the mutations that inactivate this gene, which can be selected by resistance to the antibiotic trimethoprim. This T to A transversion, at base 131 of the coding sequence, occurs within a 17 bp quasi-palindromic sequence. To clarify the mechanism of mutagenesis, we examine here cis and trans-acting factor...

Studies have shown that the human capability of monitoring multiple surveillance videos is limited. Computer vision techniques have been developed to detect abnormal events to support human video surveillance; however, their results are often unreliable, thus distracting surveillance operators and making them miss important events. This paper presents Hotspot as a surveillance video visualizati...

A Geoinformatic Hotspot Surveillance System (GHS) will be demonstrated. This system is comprised of an upper level set scan statistic system for hotspot delineation, and a poset prioritization and ranking system for hotspot prioritization. Surveillance geoinformatics partnership consists of several interested cross-disciplinary scientists from academia, agencies and private sector.

In recent years there has been a move within police services towards a proactive and intelligence-led style of policing. This has coincided with a recognition of the value of local policing solutions and the importance of the intelligence function at the local area command level. This paper uses a combination of hotspot analysis within a geographical information system (GIS), a hotspot percepti...

The ade6-M26 mutation of Schizosaccharomyces pombe created a meiotic recombination hotspot. Previous analyses indicated that the heptamer 5'-ATGACGT-3' was necessary and sufficient for hotspot activity; the Atf1-Pcr1 transcription factor binds to this sequence and activates M26. After finding cases in which the M26 heptamer in ade6 was, surprisingly, not active as a hotspot, we used an in vitro...

Packet-switching WDM ring networks with a hotspot transporting unicast, multicast, and broadcast traffic are important components of high-speed metropolitan area networks. For an arbitrary multicast fanout traffic model with uniform, hotspot destination, and hotspot source packet traffic,we analyze themaximumachievable long-run average packet throughput, which we refer to as multicast capacity,...

A conspicuous 60° bend of the Hawaiian-Emperor Chain in the north-western Pacific Ocean has variously been interpreted as the result of an abrupt Pacific plate motion change in the Eocene (∼47 Ma), a rapid southward drift of the Hawaiian hotspot before the formation of the bend, or a combination of these two causes. Palaeomagnetic data from the Emperor Seamounts prove ambiguous for constraining...