Publications by authors named "Lee Juwon"

This study analyzed the impact of post-stroke fatigue (PSF) on functional recovery in acute and subacute stroke patients during inpatient rehabilitation. Medical records of 177 patients were retrospectively reviewed. PSF was assessed using the Fatigue Severity Scale (FSS)-9.

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V(D)J recombination secures the production of functional immunoglobulin (Ig) genes and antibody diversity during the early stages of B-cell development through long-distance interactions mediated by cis-regulatory elements and trans-acting factors. O-GlcNAcylation is a dynamic and reversible posttranslational modification of nuclear and cytoplasmic proteins that regulates various protein functions, including DNA-binding affinity and protein-protein interactions. However, the effects of O-GlcNAcylation on proteins involved in V(D)J recombination remain largely unknown.

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  • - Polytrichia is a common observation in folliculitis decalvans (FD), linked to compound follicular structures (CFS) that involve multiple hair follicles sharing a single opening and surrounded by fibrous tissue.
  • - A study analyzed 10 scalp biopsy samples from patients with early-stage FD, focusing on the types and quantities of follicles within these CFS.
  • - The findings revealed that of 205 follicles examined, 156 were terminal follicles, primarily in the anagen phase, providing insights into the pathology of FD.
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  • The KrCl-excimer lamp emits far-UVC light at 222 nm, which is more effective than conventional UVC light at 254 nm for degrading and detoxifying harmful organic pollutants, specifically chlorophenols.
  • UV222 demonstrated significantly higher efficiencies in photolyzing chlorophenols, being 1.4 to 34.1 times faster than UV254, particularly with protonated versions due to better light absorption and quantum yields.
  • The study found UV222 to enhance dechlorination rates to 95% compared to 60% with UV254, although the presence of radical sensitizers could complicate the process, producing toxic intermediates but also aiding in detoxification.
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  • The KrCl* excimer lamp (UV222) is a mercury-free alternative to low-pressure mercury lamps (UV254) for UV-based advanced oxidation processes, offering higher photon energy and better performance.
  • A comprehensive study was conducted on various oxidants like hydrogen peroxide and persulfate, revealing that UV222 significantly enhances oxidant activation, with increased efficacy for degrading micropollutants compared to UV254.
  • PDS proved to be the most effective oxidant under UV222, achieving much higher rates of micropollutant elimination and requiring less energy, despite some interference from other water constituents.
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Occupational dermatitis (OD) is an inflammatory skin disease stemming from exposure to specific substances within a work setting. As the second most prevalent occupational health concern in 2020, affecting 1.8 per 10,000 workers, OD poses a significant challenge to workforce well-being and imposes a substantial economic burden through lost wages, decreased productivity, and increased healthcare spending.

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The effectiveness of ozonation, one of the techniques known for destroying organic contaminants from wastewater, depends on the composition of the wastewater matrix. The required ozone (O) dose is determined based on the target compounds during ozonation. Hydroxyl radicals are quantified using a probe compound.

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  • Limited research has examined the impact of social determinants of health on urban-rural disparities in skin cancer prevalence, especially among individuals with Skin of Color.
  • A study analyzing data from five states found that rural populations generally have a higher likelihood of a positive skin cancer history compared to their urban counterparts across various social determinants, including race and income.
  • Notably, while most rural racial groups showed higher odds of skin cancer, this disparity diminished among those with a household income above $100,000, highlighting the influence of socioeconomic factors on health outcomes.
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Ovarian cancer is a leading cause of death among gynecologic tumors, often detected at advanced stages. Metabolic reprogramming and increased lipid biosynthesis are key factors driving cancer cell growth. Stearoyl-CoA desaturase 1 (SCD1) is a crucial enzyme involved in de novo lipid synthesis, producing mono-unsaturated fatty acids (MUFAs).

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Ovarian cancer is a lethal gynecologic cancer mostly diagnosed in an advanced stage with an accumulation of ascites. Interleukin-6 (IL-6), a pro-inflammatory cytokine is highly elevated in malignant ascites and plays a pleiotropic role in cancer progression. Mitochondria are dynamic organelles that undergo fission and fusion in response to external stimuli and dysregulation in their dynamics has been implicated in cancer progression and metastasis.

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Introduction: Transcranial direct current stimulation (tDCS) has shown positive but inconsistent results in stroke rehabilitation. This could be attributed to inter-individual variations in brain characteristics and stroke lesions, which limit the use of a single tDCS protocol for all post-stroke patients. Optimizing the electrode location in tDCS for each individual using magnetic resonance imaging (MRI) to generate three-dimensional computer models and calculate the electric field (E-field) induced by tDCS at a specific target point in the primary motor cortex may help reduce these inconsistencies.

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NAKAI (AG) is a popular traditional medicinal herb widely used to treat dyslipidemia owing to its antioxidant activity. Vascular disease is intimately linked to obesity-induced metabolic syndrome, and AG extract (AGE) shows beneficial effects on obesity-associated vascular dysfunction. However, the effectiveness of AGE against obesity and its underlying mechanisms have not yet been extensively investigated.

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In the continuous-type supercritical water hydrolysis process, rapid mixing of supercritical and subcritical streams is important to maximize yield and minimize degradation from over-reaction. This work investigated the particle behavior in a Y-junction mixer using large eddy simulation coupled with a discrete phase model, aiming to optimize the supercritical hydrolysis process for biomass conversion. A series of numerical simulations analyzed the influence of the mixer's orientation, flow directions, and flow rates on effective mixing and backflow prevention.

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Enhancing adult neurogenesis in the brain has been suggested as a potential therapeutic strategy for AD. We developed a screening platform, ATRIVIEW, for molecules that activate neuronal differentiation of adult mouse NSCs. The most potent hit from an FDA-approved drug library was SNR1611 (trametinib), a selective MEK1/2 inhibitor.

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Taste and odor (T&O) compounds present in natural water bodies could originate from algae. In this study, alga-generated compounds that can cause T&O issues in water, such as geosmin (GE), 2-Methylisoborneol (MIB), 2,4,6-Trichloroanisole (TCA), 2-Methylbenzofuran (MB), 2-Isopropyl-3-methoxypyrazine (IPMP), 2-Isobutyl-3-methoxypyrazine (IBMP), cis-3-Hexenyl acetate (HA), trans,trans-2,4-Heptadienal (HD), trans,cis-2,6-Nonadienal (ND), and trans-2-Decenal (DN), were determined through solid-phase microextraction coupled with gas chromatography/mass spectrometry (HS-SPME GC/MS) and electronic tongue (E-tongue), and the results from the two techniques were compared. Although HS-SPME GC/MS facilitates the detection and quantification of T&O compounds with high precision and accuracy, the sample preparation and handling is difficult and the analysis time (1 h) is longer than those of other analytical methods.

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The composition of the wastewater matrix influences the oxidation potential of ozonation, a technique widely recognized efficient removal of micropollutants. Here, we developed a chemical kinetic model to determine the ozone dose required to minimize bromate production in wastewater containing bromine ions while achieving target removal rates. In wastewater ozonation, ozone decomposition comprises instantaneous ozone consumption and subsequent decomposition at first-order reaction rates.

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High-quality BiSe thin films with topological insulating properties at room temperature have recently attracted much attention as one of the promising materials for realizing innovative electronic and optoelectronic devices. Here, we report the high crystallinity growth of BiSe thin films on a patterned sapphire substrate (PSS) by using a vapor-phase transport deposition with minimizing thermal dissociation of Se atoms vaporized in BiSe powder. This PSS not only reduces the large dislocation of heterogeneously grown BiSe on a sapphire substrate but also induces enhanced light absorption in the visible to near-infrared (IR) ranges compared to BiSe on planar sapphire substrates.

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This study applied a method for estimating chlorine decay constant (k) in urban water distribution systems using fluorescence excitation-emission matrix spectroscopy-parallel factor analysis (FEEM-PARAFAC), considering that it accounts for the influence of organic matter in the target area. The simultaneous impacts of seasonal variations on chlorine consumption and dissolved organic matter (DOM) composition were investigated for a year in three full-scale water distribution systems in I city (areas S, K, and G). Bulk decay constants (kb) were obtained through bottle tests, and the kb value was observed to differ by season and significantly affected by temperature.

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Due to the unavailability of assessment tools focused on support recipients, the aged-care literature has not been able to document the support seeking that occurs within familial support contexts. Therefore, we developed and validated a Support-Seeking Strategy Scale in a large sample of aging parents receiving care from their adult children. A pool of items was developed by an expert panel and administered to 389 older adults (over 60 years of age), all of whom were receiving support from an adult child.

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Colloidal nanocrystals (NCs) have shown remarkable promise for optoelectronics, energy harvesting, photonics, and biomedical imaging. In addition to optimizing quantum confinement, the current challenge is to obtain a better understanding of the critical processing steps and their influence on the evolution of structural motifs. Computational simulations and electron microscopy presented in this work show that nanofaceting can occur during nanocrystal synthesis from a Pb-poor environment in a polar solvent.

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InZnP:Ag nano-rods fabricated by the ion milling method were thermally annealed in the 250~350 °C temperature range and investigated the optimum thermal annealing conditions to further understand the mutual correlation between the optical properties and the microscopic magnetic properties. The formation of InZnP:Ag nano-rods was determined from transmission electron microscopy (TEM), total reflectivity and Raman scattering analyses. The downward shifts of peak position for LO and TO modes in the Raman spectrum are indicative of the production of Ag ion-induced strain during the annealing process of the InZnP:Ag nano-rod samples.

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With many conveniences afforded by advances in smartphone technology, developing advanced data analysis methods for health-related information from smartphone users has become a fast-growing research topic in the healthcare field. Along these lines, this paper addresses smartphone sensor-based characterization of human motions with neural stochastic differential equations (NSDEs) and a Transformer model. NSDEs and modeling via Transformer networks are two of the most prominent deep learning-based modeling approaches, with significant performance yields in many applications.

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