Publications by authors named "Jun Seo"

Article Synopsis
  • Wind-induced currents play a crucial role in resuspending and transporting sediment in micro-tidal bays, particularly in heavily contaminated areas like Onsan Bay.
  • In-situ measurements using acoustic Doppler current profilers (ADCPs) showed that residual currents contributed over 70% of the total sediment flux, with surface sediments moving seaward and bottom sediments moving landward.
  • Northerly winds intensified these landward currents, suggesting they may increase sediment deposition in the bay, which has implications for managing sedimentation in coastal environments.
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  • Biophysical mud aggregates, made of clay minerals and extracellular polymeric substances (EPS), are essential for water quality and aquatic ecosystems, but their complex shapes and settling behaviors in saline water are not well understood.
  • A new dual-view method using an inverted microscope and side camera was developed to take detailed images of these aggregates from different angles, revealing that bottom-view images offer better insights into their geometric properties during settling.
  • The study found that flocs made from clay-EPS mixtures are larger and more irregular than those made from pure clay, with EPS promoting stability in larger flocs during turbulence, indicating that models of flocculation need to consider organic materials and use a multi-perspective approach for better accuracy.
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  • Renal replacement therapy (RRT) is critical for treating sepsis-related acute kidney injury (AKI), but its ideal timing is debated; this study focused on the effects of starting continuous kidney replacement therapy (CKRT) within 6 hours of AKI onset.
  • Analyzing data from the MIMIC-IV database, the study found that patients who received early CKRT had a significantly lower 28-day mortality rate compared to those who started later (26.7% vs. 43.9%).
  • Additionally, early CKRT patients experienced more days without needing mechanical ventilation or vasopressors, indicating better overall clinical outcomes despite no significant difference when comparing CKRT initiation within 12 hours versus later.
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Objectives: Sepsis is a leading global cause of mortality, and predicting its outcomes is vital for improving patient care. This study explored the capabilities of ChatGPT, a state-of-the-art natural language processing model, in predicting in-hospital mortality for sepsis patients.

Methods: This study utilized data from the Korean Sepsis Alliance (KSA) database, collected between 2019 and 2021, focusing on adult intensive care unit (ICU) patients and aiming to determine whether ChatGPT could predict all-cause mortality after ICU admission at 7 and 30 days.

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The anodeless battery design has recently gained significant interest by eliminating the direct use of a thick lithium (Li) foil. However, it suffers from inhomogeneous Li flux, resulting in dendrite growth and a short cycling life. To address this, the exfoliation of layered-structure titanium oxide to 2D nanosheets (2DTiO) is proposed to precisely control Li flux at the atomic scale by maximizing Li affinitive Ti sites.

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Background: Patients with sensitization and blood type O experience increased waiting times for deceased-donor kidney transplantation (DDKT). While allocation benefits are needed to resolve inequity in DDKT opportunity, whether DDKT has comparable outcomes in this disadvantaged population requires further study. This study assessed these outcomes and developed a new allocation system that balances equity and utility.

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This study aimed to analyze patients with rhabdomyolysis who presented to emergency departments and identify their distribution of related disease and prognostic factors. A retrospective cohort study was conducted on patients with rhabdomyolysis who presented to emergency departments over a 10-year period. Patient data, including patients' demographic variables (sex and age), mode of arrival, final diagnosis, statin use, rhabdomyolysis trigger factors, and levels of serum creatine phosphokinase (CPK), myoglobin, creatinine, sodium, potassium, phosphate, calcium, and lactate, were analyzed.

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In this report, we present our studies on mRNA, which was modified by introducing various halogen substituents at the C(5) position of the pyrimidine base. Specifically, we synthesized C(5)-halogenated (F, Cl, Br, I) pyrimidine ribonucleoside triphosphates and incorporated them into mRNA during in-vitro transcription. The efficiency of the in-vitro transcription reaction of halogenated pyrimidine was observed to decrease as the size of the halogen substituent increased and the electronegativity thereof decreased (F > Cl > Br) except for iodine.

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Aims: Although hypothalamic-pituitary-adrenal (HPA) axis dysregulation in obsessive-compulsive disorder (OCD) has been reported, epigenetic changes in HPA axis-related genes have not been well studied in OCD. The present study investigated whether the epigenetic regulation of FK506-binding protein 51 gene (FKBP5) intron 7 is associated with OCD status in each sex. In addition, relationships among the DNA methylation levels of FKBP5 intron 7, OCD status and early-life trauma were explored.

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Nitrogen (N) is essential for plant growth and development. Therefore, understanding its utilization is essential for improving crop productivity. However, much remains to be learned about plant N sensing and signaling.

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Aim: The present study examined the microbiome abundance and composition of drug-naive or drug-free patients with obsessive-compulsive disorder (OCD) compared with healthy controls. In addition, in the OCD group, the microbiome composition was compared between early-onset and late-onset OCD.

Methods: Serum samples were collected from 89 patients with OCD and 107 age- and sex-matched healthy controls.

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Background: The coronavirus disease 2019 (COVID-19) pandemic and the corresponding lockdown have drastically changed our lives and led to high psychological distress and mental health problems. This study examined whether psychological factors such as loneliness, perfectionism, and health anxiety are associated with COVID-19 related anxiety and depression during the pandemic in young Korean adults, after controlling for various socio-demographic factors and early life stress.

Methods: A total of 189 participants (58.

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Background: Thoracic acute aortic syndrome (AAS) and non-ST elevation myocardial infarction (NSTEMI) have similar clinical presentations, making them difficult to differentiate. This study aimed to identify useful biomarkers for the differential diagnosis of thoracic AAS and NSTEMI.

Methods: This was a retrospective observational study.

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Background: The 2019 coronavirus disease (COVID-19) pandemic has caused an unprecedented disruption of daily lives and a mental health crisis. The present study examined how the depression and anxiety symptom network changed during the COVID-19 pandemic in a naturalistic transdiagnostic sample with non-psychotic mental illness.

Materials And Methods: A total of 224 psychiatric outpatients before the pandemic and 167 outpatients during the pandemic were included in the study and were assessed for the Patient Health Questionnaire and the Beck Anxiety Inventory.

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Nitrogen (N) is an essential macronutrient required for plant growth and crop production. However, N in soil is usually insufficient for plant growth. Thus, chemical N fertilizer has been extensively used to increase crop production.

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Plants accumulate several metabolites in response to drought stress, including branched-chain amino acids (BCAAs). However, the roles of BCAAs in plant drought responses and the underlying molecular mechanisms for BCAA accumulation remain elusive. Here, we demonstrate that rice (Oryza sativa) DROUGHT-INDUCED BRANCHED-CHAIN AMINO ACID AMINOTRANSFERASE (OsDIAT) mediates the accumulation of BCAAs in rice in response to drought stress.

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Land plants have developed a comprehensive system to cope with the drought stress, and it is operated by intricate signaling networks, including transcriptional regulation. Herein, we identified the function of OsNAC17, a member of NAC (NAM, ATAF, and CUC2) transcription factor family, in drought tolerance. OsNAC17 is localized to the nucleus, and its expression was significantly induced under drought conditions.

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Background: Acute variceal bleeding (AVB) is a severe complication of portal hypertension that is caused by rupture of the esophageal or gastric varix. Scoring system for risk stratification of AVB is difficult to use because various variables must be entered, and it is difficult to apply early in the emergency department (ED). We compared and analyzed the usefulness of the D-dimer to albumin ratio (DAR) for risk stratification of AVB.

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Article Synopsis
  • Depression and sleep-wake disorders are prevalent issues among emergency medicine (EM) residents in South Korea, particularly affecting females, who exhibit higher rates of mental health problems compared to males.
  • A survey of 384 EM residents showed that 27.5% experienced moderate to severe depression and 36.9% reported sleep-related issues, with factors like inflexible shift scheduling and frequent night shifts contributing to these problems.
  • Analysis of the data indicated that female residents are at a greater risk for both depression and sleepiness, highlighting the need for targeted interventions to address these issues in the work environment.
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Background: The 2019 coronavirus disease (COVID-19) pandemic has had a profound impact on the mental health of people worldwide. This study examined dysfunctional coronavirus anxiety in nonpsychotic psychiatric outpatients during the pandemic using the coronavirus anxiety scale (CAS) and examined the relationship between coronavirus anxiety and clinical symptoms using network analysis.

Methods: In this cross-sectional study, 192 patients who first visited the psychiatric outpatient clinic of Severance Hospital during the COVID-19 pandemic with chief complaints of depressed mood, anxiety, somatic symptoms, or insomnia were included.

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Background: Recently, D-dimer has been suggested as a biomarker to rule out acute aortic syndrome (AAS). Since it increases with age, this study was conducted to reveal whether an age-adjusted D-dimer can increase diagnostic accuracy in ruling out AAS.

Method: A retrospective observational study design was used.

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Background: Social phobia shares symptoms with arrhythmias, such as palpitations and chest discomfort. However, it is unclear how social phobia is associated with the actual risk of arrhythmia. This study aimed to investigate whether social phobia is associated with the risk of arrhythmia using a nationally representative sample cohort.

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Plants have evolved sophisticated defense systems to enhance drought tolerance. These include the microRNA (miRNA) group of small noncoding RNAs that act as post-transcriptional regulators; however, details of the mechanisms by which they confer drought tolerance are not well understood. Here, we show that , a member of - gene family, is mainly expressed in response to drought stress and regulates the transcript levels of () and in rice ().

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Article Synopsis
  • The study investigates prehospital factors linked to poor outcomes in traumatic arrest cases, aiming to improve treatment decisions before patients reach the emergency room.
  • Conducted across four urban hospitals in South Korea, the research analyzed data from 145 patients who died in the ER and 27 who survived, focusing on variables like heart rhythm and injury severity.
  • Key findings indicate that asystole (absence of heart rhythm) and a lack of return of spontaneous circulation (ROSC) before hospital arrival increase the risk of ER death, particularly in cases involving falls from significant heights.
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