-
Article
Open AccessLarge contributions of petrogenic and aged soil-derived organic carbon to Arctic fjord sediments in Svalbard
Svalbard fjords are recognized as hotspots for organic carbon (OC) burial and storage due to their high sedimentation rates, which effectively trap terrestrial sediments and inhibit extensive OC remineralizati...
-
Article
Open AccessDietary shredded steam-exploded pine particle supplementation as a strategy to mitigate chronic cyclic heat stress by modulating gut microbiota in broilers
Improving the availability of underutilized waste for the economic use of livestock feed can be important in countries where feed grain production is scarce. Modulating the gut microbiota through the fibrous c...
-
Article
Temporal Variations Rather than Long-Term Warming Control Extracellular Enzyme Activities and Microbial Community Structures in the High Arctic Soil
In Arctic soils, warming accelerates decomposition of organic matter and increases emission of greenhouse gases (GHGs), contributing to a positive feedback to climate change. Although microorganisms play a key...
-
Article
Time-lapse electrical resistivity tomography and ground penetrating radar map** of the active layer of permafrost across a snow fence in Cambridge Bay, Nunavut Territory, Canada: correlation interpretation using vegetation and meteorological data
The active layer thickness (ALT) is a key parameter for permafrost studies. Changes in the ALT are affected mainly by air and ground temperatures, physical and thermal properties of the surface and subsurface ...
-
Article
Enhanced Fatty Acid Productivity by Parachlorella sp., a Freshwater Microalga, via Adaptive Laboratory Evolution Under Salt Stress
Salt stress can be used to increase intracellular lipid content of microalgae. However, the growth of microalgae is decreased under salt stress. Thus, a two-stage cultivation strategy with a growth phase follo...
-
Article
Dynamics of microbial communities and CO2 and CH4 fluxes in the tundra ecosystems of the changing Arctic
Arctic tundra ecosystems are rapidly changing due to the amplified effects of global warming within the northern high latitudes. Warming has the potential to increase the thawing of the permafrost and to chang...
-
Article
Polymerization Kinetics and Physical Properties of Polyurethanes Synthesized by Bio-Based Monomers
The aim of this study was to examine the kinetics of polymerization and the properties of polyurethane (PU) synthesized from renewable sources named iPU using isosorbide (ISB), cPU using caster oil (CO), and h...
-
Article
Chemical characterization of dissolved organic matter in moist acidic tussock tundra soil using ultra-high resolution 15T FT-ICR mass spectrometry
Global warming is considered one of the most serious environmental issues, substantially mediating abrupt climate changes, and has stronger impacts in the Arctic ecosystems than in any other regions. In partic...
-
Chapter and Conference Paper
Pulse-Coupled Oscillator Desynchronization (PCO-D) Based Resource Allocation for Multi-hop Networks
In recent years, because of the increasing number of network nodes and the rapidly changing network environment, several studies have attempted to extend biologically inspired algorithms to distributed resourc...
-
Article
Vertical distribution of bacterial community is associated with the degree of soil organic matter decomposition in the active layer of moist acidic tundra
The increasing temperature in Arctic tundra deepens the active layer, which is the upper layer of permafrost soil that experiences repeated thawing and freezing. The increasing of soil temperature and the deep...
-
Article
Optimization of ethanol extraction of antioxidative phenolic compounds from torrefied oak wood (Quercus serrata) using response surface methodology
A torrefaction treatment process followed by ethanol extraction was applied for extracting antioxidant components from oak wood. Response surface methodology (RSM) was applied to optimize the ethanol extractio...
-
Article
Sensitive change of iso-branched fatty acid (iso-15:0) in Bacillus pumilus PAMC 23174 in response to environmental changes
In this study, the environmental adaptive metabolic processes were investigated using a psychrotrophic polar bacterium Bacillus pumilus PAMC 23174 in response to various temperatures and nutrients, especially in ...
-
Article
Kimchi microflora: history, current status, and perspectives for industrial kimchi production
Kimchi, a traditional Korean food made by the fermentation of vegetables, has become popular globally because of its organoleptic, beneficial, and nutritional properties. Spontaneous kimchi fermentation in uns...
-
Article
Evaluation of the EDGE detector in small-field dosimetry
This study evaluates a new diode detector design for small-field dosimetry. An accurate detector that has a small volume are necessary to compile data for stereotactic radiosurgery (SRS), stereotactic body rad...
-
Article
Isolation of facultatively anaerobic soil bacteria from Ny-Ålesund, Svalbard
Anaerobic conditions in soil commonly occur even in upland environments. Physiological and biogeochemical properties of individual anaerobic bacteria, however, have been poorly understood due to difficulties i...
-
Article
Halomonas cibimaris sp. nov., isolated from jeotgal, a traditional Korean fermented seafood
Two moderately halophilic, facultatively aerobic, motile bacteria with flagella, designated strains 10-C-3T and 30-C-3, were isolated from jeotgal, a traditional Korean fermented seafood. Cells of the strains wer...
-
Article
Dosimetric comparison of stereotactic body radiotherapy for spinal metastasis in cyberknife and helical tomotherapy
This study seeks to evaluate the stereotactic body radiation therapy (SBRT) dosimetric benefit of cyberknife (CK) and helical tomotherapy (HT) for spinal tumor patients in regards to successful plan acceptance...
-
Article
Dosimetric comparison of helical tomothearpy and linac-based IMRT in whole abdomen radiotherapy
Recent advances in radiotherapy techniques have allowed a significant improvement in the therapeutic ratio of whole abdominal irradiation (WAI) through linear-accelerator (Linac) based intensity-modulated radi...
-
Article
Tomotherapy planning and image registration for planning CT image slice thickness for stereotactic radiosurgery
Tomotherapy (TomoTherapy, Inc., Madison, WI, USA) is a helical intensity modulated radiation therapy (IMRT) modality using rotational delivery of a fan beam like a CT scanner to deliver highly conformal radiat...
-
Article
Changes in CO2, 13C abundance, inorganic nitrogen, β-glucosidase, and oxidative enzyme activities of soil during the decomposition of switchgrass root carbon as affected by inorganic nitrogen additions
This study was conducted to investigate the effect of inorganic nitrogen (N) and root carbon (C) addition on decomposition of organic matter (OM). Soil was incubated for 200 days with nine treatments (three le...
