Institution
Hokkaido University
Recent research
- Engineering & TechnologyOpen access
Abstract The 2024 Noto Peninsula earthquake occurred along the northern coast of the Noto Peninsula in Japan and generated a large tsunami. The earthquake also caused submarine landslides that generated local tsunamis in Toyama Bay. When large earthquakes occurred near the coast,...
- Health & MedicineOpen access
Abstract Cesarean delivery (CD) has been suggested as a potential risk factor for childhood overweight and obesity; however, evidence beyond early childhood remains inconsistent. We examined the association between CD and childhood overweight at age 6 years and explored early lif...
- Health & MedicineOpen access
Background: We revised the taxonomy and identification of the species of the genus Bothriocroton in light of entire mitochondrial genomes and nuclear rRNA genes, scanning electron microscopy, and light microscopy. Methods: (i) phylogenetic trees inferred from entire mitochondrial...
- Biology
Abstract Early-life nutrition affects skeletal muscle characteristics in cattle. This nutritional modulation affects muscle metabolism and fiber type composition, potentially influencing muscle productivity and meat quality in later life. In this study, we focused on the psoas ma...
- BiologyOpen access
Mastigitae comprise 15 genera, of which seven are extinct, and species of two extant genera are also documented as fossils. The rich fossil record makes Mastigitae exceptional among Staphylinidae. Based on results of phylogenetic analyses comprising 33 extant species, 10 dated fo...
- Climate & EnvironmentOpen access
Psammoecus delicatus Grouvelle 1908
based on its type material and a revised key to identify species in the genus are also provided. A phylogenetic analysis based upon four genes (COI, 16S, 18S, 28S) confirms its position within Hesionini.
- Society & EconomicsOpen access
Whether neighborhood interaction is differently associated with initiation and cessation of social participation in early old age remains unclear. We analyzed 1,688 Japanese adults surveyed at ages 65 and 70. Initiation and cessation were examined separately using modified Poisso...
- Climate & EnvironmentOpen access
Concrete biological shields (CBSs) of large pressurized water reactors (PWRs) yield a significant amount of waste upon decommissioning, and neutron-transport and activation calculations are useful tools for evaluating their radioactivity distributions. However, the impact of the...
- Materials & Energy
ABSTRACT Circularly polarized electroluminescence (CPEL) based on spin‐dependent light emission is of considerable interest for functional chiral optoelectronics and spin‐photonic applications. Here we report CPEL from devices incorporating achiral poly(9,9‐dioctylfluorene) (PFO)...
- Materials & EnergyOpen access
Strain Correlated Linearly Polarized Photoluminescence in WSe2/WS2 Moire Superlattices
Abstract Reliable optical control of valley degrees of freedom in moiré excitons requires that the emitted polarization faithfully reflects the underlying valley state. Here, we show that linearly polarized photoluminescence from WSe2/WS2 moiré excitons is largely insensitive t...
- Climate & Environment
Diagnosis of bacterial adhesion performance of activated sludge based on AI-assisted image analysis
ABSTRACT To estimate the bacterial adhesion performance of activated sludge (AS), batch adhesion tests of Escherichia coli (E. coli) on AS and quantitative image analysis (QIA) with a deep learning-based image classifier for magnified AS images were conducted. The pseudo-first-or...
- AI & Computing
This study examines a faculty and staff program on generative AI at the Hokkaido University of Science and proposes a reusable AI‐assisted workflow for developing a knowledge‐sharing website. The program addressed fundamental concepts, applications, and ethical considerations for...
- Materials & Energy
Dynamic Bending of Carbodiimide Anions Derives Uniaxial Negative Thermal Expansion in ZnNCN
Abstract Materials exhibiting negative thermal expansion (NTE), characterized by anomalous lattice contractions upon heating, have attracted considerable attention because of the unique attendant changes in crystal structure. A wide variety of compounds, including metal oxides, f...
- Engineering & TechnologyOpen access
Fine-scale strain-rate mapping of Japan from integrated public–private GNSS stations
We integrated observational data from the Global Navigation Satellite System (GNSS) Earth Observation NETwork System (GEONET) in Japan, operated by the Geospatial Information Authority of Japan, with over 3,300 proprietary reference stations operated by SoftBank Corp., and, using...
- Materials & Energy
Abstract Molecular catalysts assembled into solids can exhibit catalytic properties beyond those of their individual components, yet the origin of this enhancement is often unclear. Here, we address this issue using porous ionic crystals (PICs) based on polyoxometalates (POMs). T...
- Health & Medicine
OBJECTIVES: Diagnostic errors are a major patient safety concern, particularly in emergency settings where junior residents frequently perform initial evaluations. Diagnostic error case conferences are used as educational interventions, but their impact on sustained learning beha...
- Climate & EnvironmentOpen access
Stress field estimation and evaluation in eastern Hokkaido, northernmost Japan
In eastern Hokkaido, a volcanic front extends in the northeast–southwest direction, and small eruptions have occurred in recent years. Although eastern Hokkaido is a low-seismicity region, we estimated the stress field using a larger dataset than those employed previously to unde...
- Health & MedicineOpen access
Abstract Although many cases of medication-related osteonecrosis of the jaw (MRONJ) have been reported, its pathophysiology remains unclear. Additionally, previous histological and metagenomic studies have implicated an association between MRONJ and Actinomyces ; however, verific...
- Biology
Edamame (Glycine max) growth, yield, and nutrient uptake are influenced by tillage and cover crop management. Unlike the well-studied grain soybean systems, little is known about how tillage and cover crop practices affect nitrogen (N) dynamics and yield in edamame cultivation, p...
- Materials & EnergyOpen access
Diboron‐Embedded Heteroacenes With Systematically Varied Central π‐Skeletons and Fusion Modes
ABSTRACT Diboron‐embedded heteroacenes with systematically varied central π‐skeletons and fusion modes were synthesized via one‐pot cyclative borylation using benzene, thieno[3,2‐ b ]thiophene, or dithieno[3,2‐ b :2′,3′‐ d ]thiophene cores, affording six derivatives with C 2h or...