A5030503496- Metal Forming Simulation Techniques
- Metallurgy and Material Forming
- Asthma and respiratory diseases
- Laser and Thermal Forming Techniques
- Engineering Applied Research
- Sepsis Diagnosis and Treatment
- Respiratory and Cough-Related Research
- Food Allergy and Anaphylaxis Research
- Respiratory Support and Mechanisms
- Tracheal and airway disorders
- Neonatal Respiratory Health Research
- Renal function and acid-base balance
- Congenital Diaphragmatic Hernia Studies
- Dermatology and Skin Diseases
- Pediatric health and respiratory diseases
- Soft tissue tumor case studies
- Additive Manufacturing and 3D Printing Technologies
- Injection Molding Process and Properties
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Dysphagia Assessment and Management
- Cystic Fibrosis Research Advances
- Head and Neck Surgical Oncology
- Advanced optical system design
- Internet of Things and Social Network Interactions
- Image and Video Quality Assessment
Severance Hospital
2013-2025
Yonsei University
2012-2025
Korea Institute of Brain Science
2017-2024
National Health Insurance Service
2024
National Health Insurance Service Ilsan Hospital
2024
Soonchunhyang University Hospital
2024
Pusan National University
2023
Hanyang University
2017-2019
Korea Institute of Industrial Technology
2008-2017
Seoul National University of Science and Technology
2017
Vital sign monitoring in neonates requires adhesive electrodes, which often damage fragile newborn skin. Because impulse radio ultrawideband (IR-UWB) radar has been reported to recognize chest movement without contact adult humans, IR-UWB may be used measure respiratory rates (RRs) a non-contact fashion. We investigated the feasibility of sensors for respiration any support compare accuracy and reliability measurements with those conventional impedance pneumography measurements. In neonatal...
Bronchopulmonary dysplasia (BPD), an inflammatory disease involving disrupted lung development, is associated with neurodevelopmental outcome in preterm infants.This study examined the brain volume and white matter (WM) microstructure infants at term-equivalent age explored effects of BPD on development.We studied 56 (33 23 without BPD) no evidence focal abnormalities conventional magnetic resonance imaging (MRI) age. Regional volumes diffusion tensor images were using advanced segmentation...
An accurate method to predict the mortality in intensive care unit (ICU) patients has been required, especially children. The aim of this study is evaluate value serum anion gap (AG) for predicting pediatric ICU (PICU). We reviewed a data 461 were collected on PICU admission. Corrected (cAG), AG compensated abnormal albumin levels, was significantly lower survivors compared with nonsurvivors (p < 0.001). Multivariable logistic regression analysis identified following variables as independent...
Abstract Background Impulse oscillometry (IOS) measures respiratory resistance and reactance during tidal breaths is a convenient tool for evaluation of lung function. Respiratory can be measured separately inspiration expiration (inspiratory‐expiratory analysis). Objective We investigated the differences in inspiratory‐expiratory measurements obtained using IOS between children with without asthma. Methods analyzed 819 subjects aged 4‐18 years, including asthmatic ( n = 600) controls 219)....
Purpose: Egg is the most common food allergen in infants.However, natural course of egg allergy has not been fully elucidated.This study aimed to describe clinical characteristics and identify prognostic factors associated with tolerance acquisition immunoglobulin E (IgE)-mediated children.Methods: Children who underwent more than 1 follow-up white-specific (EWsIgE) test between November 2005 2015 at -Severance Children's Hospital were assessed.Children diagnosed as having IgE-mediated based...
The applicability of the Phoenix criteria and Sepsis Score in higher-resource pediatric intensive care units (PICUs) outside United States requires further validation. A retrospective cohort study analyzed electronic health records 1,304 PICU admissions under 18 years old with suspected infection between February 2017 December 2023. score was calculated using two methods: 24-hour assessment, based on worst sub-scores within 24 hours admission, prompt values closest to admission 6 before or...
Purpose: This study aimed to estimate the prevalence, prescription pattern and burden of pediatric asthma in Korea by analyzing National Health Insurance (NHI) claims data.Methods: We retrospectively analyzed insurance claim records from Korean NHI database January 2010 December 2014.Asthmatic patients were defined as children younger than 18 years, with appropriate 10th Revision International Classification Diseases codes (J45 or J46) a for 1 more maintenance medications at same...
Abstract Background Tumor necrosis factor‐like weak inducer of apoptosis ( TWEAK ) is known to play a role in the pathogenesis various inflammatory diseases. However, no study has been performed on childhood asthma. Methods Ninety‐five children with asthma and 78 controls aged 5‐18 years were included. Sputum induction, pulmonary function test PFT ), methacholine challenge performed. The subjects divided into eosinophilic airway EA non‐ NEA groups based sputum analysis high low according...
Abstract A back light unit (BLU) is a key module of thin‐film transistor liquid crystal display (TFT‐LCD), frequently utilized in various mobile displays. In this study, we experimentally characterize transcription and optical properties concave convex microlens arrays (MLAs) guide plate (LGP) fabricated by injection molding with polycarbonate as LGP substrate material. Nickel mold inserts were manufactured electroforming on the MLA, which was thermal reflow photoresist microstructures...
Post-infectious bronchiolitis obliterans (BO) could be diagnosed via spirometry and chest computed tomography (CT); however, these tests are limited in infants. We aimed to evaluate the utility of lung clearance index (LCI) air-trapping volume from CT This prospective study included 20 infants (mean age, 10.9 ± 6.3 months) with post-infectious BO between 2009 2016. All subjects underwent multiple breath washout tests. For quantitative analysis CT, mean area attenuation value was used as an...
Background: Serum albumin as an indicator of the disease severity and mortality is suggested in adult patients, but its role pediatric patients has not been established.The objectives this study are to investigate level a biomarker poor prognosis compare it with other predictive indices children intensive care unit (ICU).Methods: Medical records 431 admitted ICU at Severance Hospital from January 1, 2012 December 31, 2015 were retrospectively analyzed.Children who expired within 24 hours...
In this paper, the relation between die roll height and V-ring position was studied by fine blanking experiments for imaginary special automobile seat recliner gear. The three inserts guide plate with different positions were machined, tool manufactured. Using tool, conducted on 650 ton press. Each measured, analyzed we found tendency of heights gear to increase increasing distance contour This result can be used minimize parts when designing tool.
In this paper, the effect of die chamfer shape on roll height was studied by fine blanking experiments for imaginary special automobile seat recliner gear. The three inserts with different shapes were machined, and tool manufactured. Using tool, conducted 650 ton press. Each measured, analyzed we found tendency heights gear to increase increasing angle, horizontal distance being constant. This result can be used minimize parts when designing tool.
Abstract Background Myeloperoxidase (MPO) and human neutrophil lipocalin or gelatinase-associated (HNL/NGAL) are stored in granulocytes secreted upon activation of the cells. They have been proposed to reflect degree inflammation airways. However, their role as potential markers disease severity childhood asthma remains unknown. This study investigated relationship between expression MPO HNL/NGAL asthma. Methods A total 83 pediatric patients with 59 controls were enrolled. Using...
In this paper, a change of die roll height according to the chamfer shape and V-ring distance fine blanking tool was studied by experiments on special part with various corner shapes. Three guide plate inserts different positions three chamfers were machined, then manufactured for experiments. Nine conducted 650-ton press. Each measured analyzed. It would be noticed that heights shapes blanked parts increased increasing angle, but it decreased radius angle. The results in study can used...
In this paper, the relation between die roll height and chamfer shape was studied by fine blanking experiments for imaginary special gear. The three inserts with different shapes were machined, tool manufactured. Using tool, conducted on 650 ton press. Each measured, analyzed we found tendency of heights gear to increase increasing angle, horizontal distance being constant. This result can be used minimize parts when designing tool.
In this paper, Fe-Ni-Cr alloy friction test specimens were prepared by direct metal laser sintering (DMLS); some further treated hot isostatic pressing (HIP) at 1,050°C and 1,150°C in order to reduce the porosity increase density of specimens. Some HIP-treated subjected high-frequency ultrasonic peening (HFUP) with aim improving their tribological properties. Wear tests performed on a tribometer ball-on-disk configuration under dry conditions, while nanoscratch using ultra testing (UNST)...