Publications by authors named "Choi S"

This study develops an artificial intelligence model to quickly and easily determine correct mask-wearing in real time using thermal videos that ascertained temperature changes caused by air trapped inside the mask. Five types of masks approved by the Korean Ministry of Food and Drug Safety were worn in four different ways across 50 participants, generating 5000 videos. The results showed that 3DCNN outperformed ConvLSTM in both binary and multi-classification for mask wearing methods, with the highest AUROC of 0.

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The mononuclear phagocytic system clears the circulating inorganic nanomaterials from the bloodstream, which raises concerns about the chronic toxicity of the accumulated metal species. A better understanding of the behavior of each metal after systemic injection is thus required for clinical translations. This study investigates the significance of the metal-ligand interaction on the accumulation of cerium and demonstrates that only the form in which cerium is coordinated to a multidentate chelator with a strong binding affinity does not accumulate in major organs.

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Current models of brain networks may potentially be improved by integrating our knowledge of structural connections, within and between circuits, with metrics of functional interactions between network nodes. The former may be obtained from diffusion MRI of white matter (WM), while the latter may be derived by measuring correlations between resting state BOLD signals from pairs of gray matter (GM) regions. From inspection of diffusion MRI data, it is clear that each WM voxel within a 3D image array may be traversed by multiple WM structural tracts, each of which connects a pair of GM nodes.

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Sucrose functions as a signaling molecule in several metabolic pathways as well as in various developmental processes. However, the molecular mechanisms by which sucrose regulates these processes remain largely unknown. In the present study, we demonstrate that sucrose promotes flowering by mediating the stability of a regulatory protein that represses flowering in rice.

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This study investigated the role of Ninjurin1 (Ninj1), encoding a small transmembrane protein, in colitis-associated colon tumorigenesis in relation to sex hormones. Male and female wild-type (WT) and Ninj1 knockout (KO) mice were treated with azoxymethane (AOM) and dextran sulfate sodium (DSS), with or without testosterone propionate (TP). At week 2 (acute colitis stage), Ninj1 KO exhibited an alleviation in the colitis symptoms in both male and female mice.

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Distant metastasis to the spleen is extremely rare. To the best of our knowledge, metastasis to the accessory spleen based on pathological findings has only been reported in four patients in the English literature, including one each of ovarian cancer, transitional cell carcinoma, breast cancer, and uterine carcinosarcoma after surgery. Furthermore, among these reported cases, only two reports (one each of transitional cell carcinoma and uterine carcinosarcoma) presented imaging findings.

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  • The study investigated risk factors for central vein stenosis (CVS) in hemodialysis patients who had normal preoperative venography.
  • Out of 349 patients who underwent arteriovenous fistula creation, 22 (6.3%) developed CVS during an average follow-up of 20.9 months.
  • Key independent risk factors identified included having two or more collateral vessels on venography, the creation of a left-sided arteriovenous fistula, and a history of ipsilateral hemodialysis catheter placement.
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Kimura's disease (KD) is a rare, chronic inflammatory disorder characterized by angiolymphoid hyperplasia, peripheral eosinophilia, and elevated serum immunoglobulin E levels. It primarily affects young Asian males and typically involves the head and neck region, especially near the mandible and postauricular regions. Orbital involvement is unusual and extraocular muscle (EOM) involvement is exceedingly rare, with only a few cases reported in the literature.

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Amyotrophic Lateral Sclerosis (ALS) is a fatal neurodegenerative disease characterized by progressive motor neuron loss, microgliosis, and neuroinflammation. While pyroptosis, an inflammatory form of programmed cell death, has been implicated in ALS, the specific role of Gasdermin D (GSDMD) - the primary executioner of pyroptosis - remains unexplored. In this study, we examined the function of GSDMD in the well-established SOD1 mouse model of ALS.

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Introduction: Cigarette smoke exposure is known to induce inflammation, leading to elevated levels of inflammatory markers such as white blood cell (WBC) count and C-reactive protein (CRP). Despite extensive research on this relationship, longitudinal studies are limited. We aimed to explore the association between cigarette smoke exposure and WBC count and CRP levels by restructuring community cohort data.

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Introduction: Cardiovascular autonomic neuropathy (CAN) is a chronic complication of diabetes. As obesity is a major risk factor for CAN, we hypothesized that metabolic bariatric surgery (MBS) could improve CAN indices in Korean patients with obesity.

Materials And Methods: Patients who underwent bariatric surgery between February 2020 and June 2022 were prospectively recruited.

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  • Metastasis often targets the bones, where cancer cells from the primary tumor migrate to the bone marrow, leading to new tumor growth.
  • Despite being responsible for the majority of cancer-related deaths, effective treatments for bone metastasis are lacking and primarily focus on palliative care.
  • Circulating tumor cells (CTCs) play a crucial role in this process by interacting with the bone marrow, where they can transform into disseminated tumor cells (DTCs), some of which may remain dormant while others can lead to further metastatic growth.
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Various studies have reported the use of alkali-activated composites to enable sustainable development in the construction industry as these composites eliminate the need for cement. However, few studies have used ferronickel slag aggregates (FSAs) as an aggregate material for alkali-activated composites. Alkali-activated composites are environmentally friendly and sustainable construction materials that can reduce carbon dioxide emissions from cement production, which accounts for 7% of global carbon emissions.

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The prevalence of obesity is increasing globally, with approximately 700 million obese people worldwide. Currently, regulating energy homeostasis by increasing energy expenditure is attracting attention as a strategy for treating obesity. White adipose tissue is known to play a role in accumulating energy by storing excess energy, while brown adipose tissue expends energy and maintains body temperature.

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In modern cloud environments, container orchestration tools are essential for effectively managing diverse workloads and services, and Kubernetes has become the de facto standard tool for automating the deployment, scaling, and operation of containerized applications. While Kubernetes plays an important role in optimizing and managing the deployment of diverse services and applications, its default scheduling approach, which is not optimized for all types of workloads, can often result in poor performance and wasted resources. This is particularly true in environments with complex interactions between services, such as microservice architectures.

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  • Researchers are tackling the low yield of polyhydroxyalkanoates (PHA) by exploring the use of δ-valerolactone (DVL) and plant oil to boost production without pre-treatment.
  • In their study, they found that PhaC enzyme effectively incorporated 5-hydroxyvalerate (5HV) into the PHA, resulting in significant biomass and synthesis during fed-batch fermentation.
  • The new PHAs showed improved properties, such as lower melting points and slower degradation rates, demonstrating potential benefits for polymer applications.
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We present a method that uses viscosity-lowering materials to fabricate flexible polydimethylsiloxane-based quantum dot (QD) films with high quantum yield (QY) and improved uniformity. We found that the aggregation of individual QDs was prevented, and the QY improved simultaneously in films that contained surfactants. These films showed an improved absorption of approximately 27% in the near-UV and blue light regions, along with an improved photoluminescence of approximately 18%, indicating improved light conversion from the UV to the visible frequency region.

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, an opportunistic human pathogen, employs biofilm formation as a key survival and virulence mechanism. BrpT, a transcriptional regulator, is essential for biofilm development by regulating the expression of biofilm-related genes. In this study, we aimed to identify a small molecule inhibitor of BrpT to combat biofilm formation.

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Purpose: Trimodality therapy for muscle-invasive bladder cancer (MIBC) yields similar oncologic outcomes compared to radical cystectomy in appropriately selected patients; however, data regarding locally advanced MIBC (LA-MIBC) is limited. We explored our experience with LA-MIBC undergoing radiation therapy (RT).

Methods: We retrospectively identified 30 patients from an institutional prospectively collated database with non-metastatic, LA-MIBC.

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Since 2012, China has pursued an "ecological civilization" policy to promote green energy, increase environmental protection, and transition to more sustainable growth models. The complicated positive trends in energy consumption, more sustainable economic growth, and ecological management are obscured by China's persistent, significant dependence on fossil fuels, particularly coal. The study aims to analyze how renewable energy use in China affects carbon dioxide emissions and how those impacts change over time, as well as urbanization, industrialization, tourism, and green supply chain management.

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  • - The study addresses malnutrition in intensive care units (ICUs), which is common due to factors like nutrient absorption issues and inflammation, and aims to create a specialized nutritional support strategy using the modified Nutrition Risk in Critically Ill (mNUTRIC) score based on the patient's metabolic phase.
  • - Conducted in a medical ICU over two years, the research analyzed 613 adult patients during the acute phase and 361 during the late phase, measuring nutritional intake and its impact on 28-day mortality.
  • - Results showed a significant link between nutritional supply and mortality across both phases, identifying a high mNUTRIC score and elevated lactate levels as independent risk factors for higher mortality rates in critically ill patients.
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Purpose: Applying a cervical collar during videolaryngoscopic intubation can increase the lifting force required to achieve adequate glottic view, potentially increasing cervical spine motion. We aimed to compared cervical spine motion during videolaryngoscopic intubation between applying only the posterior piece (posterior-only group) and applying both the anterior and posterior pieces (anterior-posterior group) in patients wearing a cervical collar.

Methods: We conducted a dingle-centre, parallel-group, randomized controlled trial in 102 patients (each group, N = 51).

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  • Recent research indicates that moderate alcohol consumption may reduce the risk of neurodegenerative diseases like Alzheimer's, challenging the idea that alcohol use disorder solely harms cognitive health.
  • The study investigated the effects of moderate ethanol exposure on astrocyte function, specifically looking at the LDL receptor-related protein 1 (LRP1) and its role in modulating neuroinflammation and amyloid beta (Aβ) deposition in APP/PS1 mice.
  • Findings revealed that moderate ethanol exposure reduced levels of Aβ plaques in the brain and affected pro-inflammatory cytokines differently in male and female mice, suggesting a complex interaction between alcohol consumption, inflammation, and cognitive health.
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  • Regenerative endodontic procedures (REPs) using minced pulp tissue (MP) grafts aim to treat mature teeth and improve outcomes compared to traditional methods.
  • Healthy patients needing root canal treatment participated in a study where MP from their third molars was used to fill disinfected root canals, with follow-ups assessing clinical and radiographic results.
  • The study showed favorable outcomes in most cases, identifying influencing factors like apical foramen size and the composition of grafted tissue, suggesting that this approach may be a viable alternative to conventional treatments.
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