scholarly journals Characterization of mercury, arsenic, and selenium in the product streams of the Pacific Northwest Laboratory 6-kg retort

1985 ◽  
Author(s):  
K.B. Olsen ◽  
J.C. Evans ◽  
D.S. Sklarew ◽  
D.C. Girvin ◽  
C.L. Nelson ◽  
...  
Keyword(s):  
Pacific Northwest ◽  
Pacific Northwest Laboratory ◽  
The Pacific

Geochemical and Petrological Characterization of Ash Samples from Cascade Range Volcanoes

1971 ◽  
Vol 1 (2) ◽  
pp. 261-282 ◽  
Author(s):  
Keith Randle ◽  
Gordon G. Goles ◽  
Laurence R. Kittleman
Keyword(s):  
Pacific Northwest ◽  
Volcanic Ash ◽  
Cascade Range ◽  
Crystalline Material ◽  
Refractive Indices ◽  
Crystalline Materials ◽  
The Pacific ◽  
Volcanic Ashes ◽  
Different Sources

Twenty-nine samples of volcanic ash from the Pacific Northwest were analyzed by instrumental neutron activation techniques, with the aim of distinguishing among ashes from different sources. Preliminary results of petrographic studies of 42 ash or pumice samples are also reported. Geochemical characteristics of Mazama ash are defined, and problems induced by winnowing of crystalline material during transport and by weathering are discussed. Contents of La, Th, and Co, and La/Yb ratios are shown to be good discriminants. Data on refractive indices and on proportions of crystalline materials also aid in distinguishing among the various volcanic ashes studied. Ash and pumice found in archaeological contexts at Fort Rock Cave, Paisley Cave, Wildcat Canyon, and Hobo Cave are all from Mount Mazama, presumably from the culminating cruption of 7000 years ago.

Genetic characterization of Flavobacterium columnare isolates from the Pacific Northwest, USA

2021 ◽  
Author(s):  
Fd Alexandre Sebastião ◽  
K Shahin ◽  
BR LaFrentz ◽  
MJ Griffin ◽  
TP Loch ◽  
...  
Keyword(s):  
Pacific Northwest ◽  
Genetic Characterization ◽  
Flavobacterium Columnare ◽  
The Pacific

scholarly journals Characterization of root traits for improvement of spring wheat in the Pacific Northwest

2020 ◽  
Vol 112 (1) ◽  
pp. 228-240 ◽  
Author(s):  
Bikash Ghimire ◽  
Scot H. Hulbert ◽  
Camille M. Steber ◽  
Kim Garland‐Campbell ◽  
Karen A. Sanguinet
Keyword(s):  
Pacific Northwest ◽  
Spring Wheat ◽  
Root Traits ◽  
The Pacific

scholarly journals Testing and performance of the Pacific Northwest Laboratory 6-kg retort

1984 ◽  
Author(s):  
K.B. Olsen ◽  
J.C. Evans ◽  
D.C. Girvin ◽  
D.S. Sklarew ◽  
C.L. Nelson
Keyword(s):  
Pacific Northwest ◽  
Pacific Northwest Laboratory ◽  
The Pacific ◽  
And Performance

scholarly journals Characterization of Environmental Sources of the Human and Animal Pathogen Cryptococcus gattii in British Columbia, Canada, and the Pacific Northwest of the United States

2006 ◽  
Vol 73 (5) ◽  
pp. 1433-1443 ◽  
Author(s):  
Sarah E. Kidd ◽  
Yat Chow ◽  
Sunny Mak ◽  
Paxton J. Bach ◽  
Huiming Chen ◽  
...  
Keyword(s):  
British Columbia ◽  
Pacific Northwest ◽  
Sampling Site ◽  
The United States ◽  
Cryptococcus Gattii ◽  
Environmental Distribution ◽  
The Pacific ◽  
Genetic Subtype ◽  
The Central Nervous System

ABSTRACT Cryptococcus gattii has recently emerged as a primary pathogen of humans and wild and domesticated animals in British Columbia, particularly on Vancouver Island. C. gattii infections are typically infections of the pulmonary and/or the central nervous system, and the incidence of infection in British Columbia is currently the highest reported globally. Prior to this emergence, the environmental distribution of and the extent of colonization by C. gattii in British Columbia were unknown. We characterized the environmental sources and potential determinants of colonization in British Columbia. C. gattii was isolated from tree surfaces, soil, air, freshwater, and seawater, and no seasonal prevalence was observed. The C. gattii concentrations in air samples were significantly higher during the warm, dry summer months, although potentially infectious propagules (<3.3 μm in diameter) were present throughout the year. Positive samples were obtained from many different areas of British Columbia, and some locations were colonization “hot spots.” C. gattii was generally isolated from acidic soil, and geographic differences in soil pH may influence the extent of colonization. C. gattii soil colonization also was associated with low moisture and low organic carbon contents. Most of the C. gattii isolates recovered belonged to the VGIIa genetic subtype; however, sympatric colonization by the VGIIb strain was observed at most locations. At one sampling site, VGIIa, VGIIb, VGI, and the Cryptococcus neoformans serotype AD hybrid all were coisolated. Our findings indicate extensive colonization by C. gattii within British Columbia and highlight an expansion of the ecological niche of this pathogen.

Sign in / Sign up

Export Citation Format

Share Document