J. Logan

Publications59
h-index12
Citations970
Highly Influential Citations97
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U–Pb zircon age constraint for late Neoproterozoic rifting and initiation of the lower Paleozoic passive margin of western Laurentia
A concordant U–Pb zircon age of 569.6 ± 5.3 Ma from synrift volcanic rocks of the Hamill Group, southeastern Canadian Cordillera, provides the first direct U–Pb geochronologic constraint on timing of…
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Tectonic Controls on Early Mesozoic Paired Alkaline Porphyry Deposit Belts (Cu-Au ± Ag-Pt-Pd-Mo) Within the Canadian Cordillera
Paired belts of alkalic and calc-alkalic porphyry deposits are genetically linked to early Mesozoic volcanic arcs preserved as the Quesnel and Stikine terranes in western Canada. These parallel arc…
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Large-scale survey of Campylobacter species in human gastroenteritis by PCR and PCR-enzyme-linked immunosorbent assay.
TLDR
A PCR-based study of the incidence of enteropathogenic campylobacter infection in humans was done on the basis of a detection and identification algorithm consisting of screening PCRs and species identification by PCR-enzyme-linked immunosorbent assay, and there was no statistically significant difference between PCR and culture in detection of C. jejuni-C.
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Campylobacter lanienae sp. nov., a new species isolated from workers in an abattoir.
TLDR
Nucleotide sequence analysis of the 16S rRNA gene, DNA homology experiments and determination of G + C content demonstrated that these strains constituted a previously undescribed species, whose nearest phylogenetic neighbours were Campylobacter hyointestinalis subsp.
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Detection of campylobacter species: a comparison of culture and polymerase chain reaction based methods
TLDR
Selective culture is as good as the PCR identification algorithm for the detection of the two most common species, C jejuni and C coli, and it is cheap and practical, but it does miss the less common species and results take 48 hours, and identification is only to the genus level.
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Campylobacter hominis sp. nov., from the human gastrointestinal tract.
TLDR
The unique species status of the isolates was further confirmed by taxonomic analysis of 47 phenotypic characteristics, and the 16S rDNA nucleotide sequence analysis were consistent with a new Campylobacter species whose nearest phylogenetic neighbours were Campylabacter gracilis and CampylOBacter sputorum.
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Rapid Identification of Campylobacterspp. by Melting Peak Analysis of Biprobes in Real-Time PCR
TLDR
PCR-biprobe testing of stools from 38 diarrheic subjects was 100% concordant with PCR–enzyme-linked immunosorbent assay identification and thus more sensitive than phenotypic identification following microaerobic culture.
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Large-Scale Survey of CampylobacterSpecies in Human Gastroenteritis by PCR and PCR–Enzyme-Linked Immunosorbent Assay
ABSTRACT A PCR-based study of the incidence of enteropathogenic campylobacter infection in humans was done on the basis of a detection and identification algorithm consisting of screening PCRs and…
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Prospective Areas for Intrusion-Related Gold-Quartz Veins in Southern British Columbia
Cretaceous granitic rocks can be traced the length of the northern Cordillera and are known for their association with tungsten and tin mineralization. In Alaska and Yukon the mid-Cretaceous…
U-Pb Ages of Intrusive Rocks and 40 Ar / 39 Ar Plateau Ages of Copper-Gold-Silver Mineralization Associated with Alkaline Intrusive Centres at Mount Polley and the Iron Mask Batholith , Southern and…
Por phyry de pos its in Brit ish Co lum bia have pro duced more than $27 bil lion worth of cop per and gold. They formed dur ing two dis tinct pe ri ods in the de vel op ment of the Cor dil lera: the…
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