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Showing 1 to 12 of 17 entries
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Development of a low-level .

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Williams RM, Aalseth CE, Brandenberger JM, Day AR, Finn E, Fuller ES, Hoppe EW, Humble PH, Keillor ME, Mace EK, Myers AW, Overman CT, Panisko ME, Seifert A, White SK.
PMID: 28236555
Appl Radiat Isot. 2017 Aug;126:243-248. doi: 10.1016/j.apradiso.2017.02.018. Epub 2017 Feb 17.

This paper describes the generation of

³⁹Ar/Ar measurements using ultra-low background proportional counters.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Hall J, Aalseth CE, Bonicalzi RM, Brandenberger JM, Day AR, Humble PH, Mace EK, Panisko ME, Seifert A.
PMID: 26516993
Appl Radiat Isot. 2016 Jan;107:187-190. doi: 10.1016/j.apradiso.2015.10.006. Epub 2015 Oct 08.

Age-dating groundwater and seawater using the (39)Ar/Ar ratio is an important tool to understand water mass-flow rates and mean residence time. Low-background proportional counters developed at Pacific Northwest National Laboratory use mixtures of argon and methane as counting gas....

Types of clinical reasoning in a summative clerkship oral examination.

Medical teacher

Rajeswaran V, Devine L, Lorens E, Robertson S, Huszti E, Panisko DM.
PMID: 35000527
Med Teach. 2022 Jan 10;1-7. doi: 10.1080/0142159X.2021.2020230. Epub 2022 Jan 10.

INTRODUCTION: Dual-process theory characterizes clinical reasoning (CR) as Type 1 (intuitive) and Type 2 (analytical) thinking. This study examined CR on a summative clinical clerkship structured clinical oral examination (SCOE).METHODS AND SUBJECTS: 511 clinical clerks at the University of...

Methods for using argon-39 to age-date groundwater using ultra-low-background proportional counting.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Mace E, Aalseth C, Brandenberger J, Day A, Hoppe E, Humble P, Keillor M, Kulongoski J, Overman C, Panisko M, Seifert A, White S, Wilcox Freeburg E, Williams R.
PMID: 28017500
Appl Radiat Isot. 2017 Aug;126:9-12. doi: 10.1016/j.apradiso.2016.12.037. Epub 2016 Dec 21.

Argon-39 can be used as a tracer for age-dating glaciers, oceans, and more recently, groundwater. With a half-life of 269 years,

Transcriptomic analysis of the oleaginous yeast .

Biotechnology for biofuels

Pomraning KR, Collett JR, Kim J, Panisko EA, Culley DE, Dai Z, Deng S, Hofstad BA, Butcher MG, Magnuson JK.
PMID: 31289462
Biotechnol Biofuels. 2019 Jun 26;12:162. doi: 10.1186/s13068-019-1510-z. eCollection 2019.

BACKGROUND: Efficient and economically viable production of biofuels from lignocellulosic biomass is dependent on mechanical and chemical pretreatment and enzymatic hydrolysis of plant material. These processing steps yield simple sugars as well as plant-derived and process-added organic acids, sugar-derived...

Web-based learning in inflammatory bowel diseases: General truths and current specifics.

World journal of clinical cases

Zezos P, Panisko D.
PMID: 30294605
World J Clin Cases. 2018 Oct 06;6(11):410-417. doi: 10.12998/wjcc.v6.i11.410.

In a field rapidly evolving over the past few years, the management of inflammatory bowel diseases (IBD), Crohn's disease and ulcerative colitis, is becoming increasingly complex, demanding and challenging. In the recent years, IBD quality measures aiming to improve...

Post-genomic approaches to understanding interactions between fungi and their environment.

IMA fungus

de Vries RP, Benoit I, Doehlemann G, Kobayashi T, Magnuson JK, Panisko EA, Baker SE, Lebrun MH.
PMID: 22679591
IMA Fungus. 2011 Jun;2(1):81-6. doi: 10.5598/imafungus.2011.02.01.11. Epub 2011 May 24.

Fungi inhabit every natural and anthropogenic environment on Earth. They have highly varied life-styles including saprobes (using only dead biomass as a nutrient source), pathogens (feeding on living biomass), and symbionts (co-existing with other organisms). These distinctions are not...

A shallow underground laboratory for low-background radiation measurements and materials development.

The Review of scientific instruments

Aalseth CE, Bonicalzi RM, Cantaloub MG, Day AR, Erikson LE, Fast J, Forrester JB, Fuller ES, Glasgow BD, Greenwood LR, Hoppe EW, Hossbach TW, Hyronimus BJ, Keillor ME, Mace EK, McIntyre JI, Merriman JH, Myers AW, Overman CT, Overman NR, Panisko ME, Seifert A, Warren GA, Runkle RC.
PMID: 23206058
Rev Sci Instrum. 2012 Nov;83(11):113503. doi: 10.1063/1.4761923.

Pacific Northwest National Laboratory recently commissioned a new shallow underground laboratory, located at a depth of approximately 30 meters-water-equivalent. This new addition to the small class of radiation measurement laboratories located at modest underground depths houses the latest generation...

Optical design considerations for efficient light collection from liquid scintillation counters.

Applied optics

Bernacki BE, Douglas M, Erchinger JL, Fuller ES, Keillor ME, Morley SM, Mullen CA, Orrell JL, Panisko ME, Warren GA, Wright ME.
PMID: 25968530
Appl Opt. 2015 Mar 20;54(9):2413-23. doi: 10.1364/AO.54.002413.

Liquid scintillation counters measure charged particle-emitting radioactive isotopes and are used for environmental studies, nuclear chemistry, and life science. Alpha and beta emissions arising from the material under study interact with the scintillation cocktail to produce light. The prototypical...

Development of a low-level (37)Ar calibration standard.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Williams RM, Aalseth CE, Bowyer TW, Day AR, Fuller ES, Haas DA, Hayes JC, Hoppe EW, Humble PH, Keillor ME, LaFerriere BD, Mace EK, McIntyre JI, Miley HS, Myers AW, Orrell JL, Overman CT, Panisko ME, Seifert A.
PMID: 26701655
Appl Radiat Isot. 2016 Mar;109:430-434. doi: 10.1016/j.apradiso.2015.12.027. Epub 2015 Dec 07.

Argon-37 is an environmental signature of an underground nuclear explosion. Producing and quantifying low-level (37)Ar standards is an important step in the development of sensitive field measurement instruments. This paper describes progress at Pacific Northwest National Laboratory in developing...

Background characterization of an ultra-low background liquid scintillation counter.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Erchinger JL, Orrell JL, Aalseth CE, Bernacki BE, Douglas M, Fuller ES, Keillor ME, Marianno CM, Morley SM, Mullen CA, Panisko ME, Warren GA.
PMID: 28236554
Appl Radiat Isot. 2017 Aug;126:168-170. doi: 10.1016/j.apradiso.2017.01.032. Epub 2017 Jan 26.

The Ultra-Low Background Liquid Scintillation Counter developed by Pacific Northwest National Laboratory will expand the application of liquid scintillation counting by enabling lower detection limits and smaller sample volumes. By reducing the overall count rate of the background environment...

Development of a low background liquid scintillation counter for a shallow underground laboratory.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

Erchinger JL, Aalseth CE, Bernacki BE, Douglas M, Fuller ES, Keillor ME, Morley SM, Mullen CA, Orrell JL, Panisko ME, Warren GA, Williams RO, Wright ME.
PMID: 26334781
Appl Radiat Isot. 2015 Nov;105:209-218. doi: 10.1016/j.apradiso.2015.08.027. Epub 2015 Aug 20.

Pacific Northwest National Laboratory has recently opened a shallow underground laboratory intended for measurement of low-concentration levels of radioactive isotopes in samples collected from the environment. The development of a low-background liquid scintillation counter is currently underway to further...

Showing 1 to 12 of 17 entries