A5002748012- Block Copolymer Self-Assembly
- Electrowetting and Microfluidic Technologies
- Lipid Membrane Structure and Behavior
- Health and Wellbeing Research
- Adipokines, Inflammation, and Metabolic Diseases
- Blood Pressure and Hypertension Studies
- Liver Disease Diagnosis and Treatment
- Biosensors and Analytical Detection
- Gout, Hyperuricemia, Uric Acid
- Nutritional Studies and Diet
- Suicide and Self-Harm Studies
- Cardiovascular Health and Risk Factors
- Material Dynamics and Properties
- Psychological and Temporal Perspectives Research
- Stress Responses and Cortisol
- Mental Health Treatment and Access
- Nanomaterials and Printing Technologies
- Motivation and Self-Concept in Sports
- Education, Achievement, and Giftedness
- Advanced MRI Techniques and Applications
- Diabetes, Cardiovascular Risks, and Lipoproteins
- Cardiovascular Disease and Adiposity
- Surface Modification and Superhydrophobicity
- Electrostatics and Colloid Interactions
- Nuclear Physics and Applications
Chungnam National University
2023-2025
Ewha Womans University
2023-2025
Eulji University
2019-2023
Yonsei University
2011-2021
Sogang University
2013-2020
Ewha Womans University Medical Center
2020
Hoseo University
2020
Government of the Republic of Korea
2018
Gwangju National University of Education
2017
Chonnam National University
2017
Active, paper-based, microfluidic chips driven by electrowetting are fabricated and demonstrated for reagent transport mixing. Instead of using the passive capillary force on pulp to actuate a flow liquid, group digital drops transported along programmed trajectories above electrodes printed low-cost paper, which should allow point-of-care production diagnostic activities in future.
The printing and modular fabrication of a paper‐based active microfluidic lab on chip implemented with electrochemical sensors (ECSs) is developed integrated portable electrical control system. electrodes plate for electrowetting actuation digital drops an ECS multiple analysis assays are fabricated by affordable techniques. For enhanced sensitivity the sensor, working electrode modified through method, namely reducing graphene voltammetry coating gold nanoparticles amperometry. Detachable...
This report provides an overview of hypertension prevalence, management, and trends in South Korea. The analysis is based on data from Korean adults aged 20 older, using the 1998-2022 Korea National Health Nutrition Examination Survey (KNHANES) 2002-2022 Insurance (NHI) Big Data. An estimated 30% (13 million) have hypertension, including 7.2 million men, 5.8 women, 65 or older. Overall awareness, treatment, control rates were 77%, 74%, 59%, respectively, showing a tendency to increase with...
No studies have investigated the effects of radiologic-pathologic discordance on outcomes patients who undergone resection for hepatocellular carcinoma (HCC). Therefore, we these discrepancies such patients. This study included diagnosed with HCC magnetic resonance imaging underwent resection, including 1,790 from Korean Primary Liver Cancer Registry (nationwide cohort) and 185 Chungnam National University Hospital (hospital cohorts). Radiologic-pathologic in five factors (maximum tumor...
The phase behavior of polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) copolymers various molecular weights has been studied by using small-angle X-ray scattering (SAXS) and depolarized light (DLS). empirical Flory χ, determined from intensity profiles for a fully disordered PS-b-PMMA copolymer, was shown to behave differently depending on temperature range. χ described mostly enthalpic contribution at higher temperatures, but dominant entropic appeared in lower temperatures....
Langmuir monolayers of amphiphilic molecules at an air-water interface can be compressed laterally to achieve high surface density. However, compression beyond a certain threshold causes the monolayer become unstable, which may lead formation collapsed states with topographical differences that are associated structures and mechanical properties constituent monolayer. The mechanisms differ owing in experimental conditions, i.e., temperature, ion-content, pH subphase, or rate; addition, type...
Flexible electronic circuits when integrated with different sensors to mimic the human skin can be referred as E-skin. E-skin used for monitoring of health, human-machine interface and humanoids. To skin, a variety have been studied, including those sensitive pressures, temperatures, flows, strain humidity levels. Herein, we demonstrate multifunctional sensor encompassed in single pixel which is inspired by skin. The proposed device contains pressure sensor, temperature piezoresistive...
This study investigated the influence of pre-service teachers' (n = 142) perceived endogenous/exogenous instrumentality, goal commitment, and intrinsic/extrinsic motivation on their use self-regulation strategies (effort regulation, management time environment) for teacher-education courses. Data were drawn from a customised survey statistically analysed using hierarchical multiple regressions. Results demonstrated that endogenous instrumentality was significant contributor explaining...
Hybrid plasmonic nanostructures comprising gold nanoparticle (AuNP) arrays separated from Au substrate through a temperature-sensitive poly(N-isopropylacrylamide) (PNIPAM) linker layer are constructed, and unique plasmonic-coupling-based surface plasmon resonance (SPR) sensing properties investigated. The optical of the model system investigated by in situ scan-mode SPR analysis. swelling-shrinking transitions polymer brush studied contact-mode atomic force microscopy at two different...
Propose: We aimed to investigate the prevalence and risk factors of dry eye syndrome (DES) among a population-based cohort study.Methods: This cross-sectional study was conducted on 475 subjects (184 men 291 women) enrolled in Study Group for Environmental Eye Disease at July 2013. Using ocular surface disease index (OSDI), we measured DES severity defined as OSDI score ≥13. Current symptoms possible such body mass index, occupations, comorbidities, exercise, smoking drinking status were...
Non-alcoholic fatty liver disease (NAFLD) and serum uric acid (SUA) levels are risk factors for developing cardiovascular (CVD). Additionally, previous studies have suggested that high SUA increase the of having NAFLD. However, no study has investigated relationship between CVD in This analyzed Data this used 2016-2018 Korean National Health Nutrition Examination Survey, which represents population. A total 11,160 NAFLD patients were included. Participants with hepatic steatosis index ≥ 30...
This retrospective cohort study was done to investigate the incidence of hypertension and its relation fasting blood glucose level in Korea. The eligible non-hypertensive subjects (n = 3,396,187) among National Health Insurance Service-National Screening (NHIS-HEALS) examinees 10,644,911) 2009 were followed up until 2015. A Cox proportional hazards regression used estimate risk high for incident while controlling covariates’ confounding effect. cumulative rate 10.6% seven years (11.6% men...
This study was performed to evaluate the anti-obesity effects of green tea and java pepper mixture (GJ) on energy expenditure understand regulatory mechanisms AMP-activated protein kinase (AMPK), microRNA (miR)-34a, miR-370 pathways in liver. Sprague-Dawley rats were divided into four groups depending following diets given for 14 weeks: normal chow diet (NR), 45% high-fat (HF), HF + 0.1% GJ (GJL), 0.2% (GJH). The results revealed that supplementation reduced body weight hepatic fat...
We have characterized two sets of fluorescence-labeled beads with single-bead fluorescence microspectroscopy. Our results demonstrate the possible self-quenching effect on in resin bead and, therefore, call for a careful selection fluorophores and rigorous control labeling reaction yield order to generate labeled combinatorial chemistry other disciplines.
Abstract This study examined relationships between pre‐service teachers' perceptions of future goals and motivation to complete current tasks required in teacher education courses. Using 351 survey responses from two southern universities the USA , a full‐structural modeling was conducted. Results showed perceived endogenous instrumentality (value course “content” attain goals) had direct effect on their intrinsic motivation, exogenous “grade” extrinsic motivation. research suggests...
Collagen is a skeleton of native extracellular matrix (ECM) that known to provide mechanical and structural stability. In an attempt develop new connective cellular model with the surrounding ECM without further experimental complications, such as reconstitution receptors, we designed experiments discovered fibrillogenesis membrane-bound collagen not spontaneous it in form free bulk solution. The confocal microscopic results suggest cholesterol crucial component facilitates fibril formation...
Purpose This study aimed to examine whether and what degree the suicide risk of psychiatric patients is associated with non-psychiatric health service utilization. Methods We selected incident patients, including schizophrenia, bipolar disorders, borderline personality disorder, depressive other affective post-traumatic stress disorder in 2007–2010 followed them up until 2017 based on data linkage between Korean National Health Insurance Death Registry. analyzed time-dependent association...
Total polyphenol contents, flavonoid 1,1diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activities of ethanol extracts 20 herbal plants (sage, turmeric, mace, bayleaf, fenugreek, oregano, blackpepper, whitepepper, clove, marjoram, cinnamon, coriander, basil, dillseed, mustard, cadamon, thyme, celery, rosemary, cumin) were analyzed for the screening high flavonoid-containing plant resource.Thyme extract, showing highest content and a degree antioxidant activity, was selected as...
Background. Elevated single blood pressure (BP) measurement can be associated with the development of hypertension-mediated target organ damage including left ventricular hypertrophy (LVH) and atrial (LA) enlargement (LAE). However, long-term patterns BP their effects on LVH LAE are poorly understood. We evaluated association between trajectories presence LAE. Methods. analyzed a total 2,565 participants (1,267 males, 47.8 ± 6.7 years old) from first biennial examination (2001-2002) Korean...
Abstract The detailed mechanisms leading to soft tissue contrast in MRI are not known. To explore the physical basis for this phenomena, effect of acyl chain packing phospholipid model membranes on water proton relaxation were investigated at 20 MHz 40°C. Three variables affecting lipid examined: composition, toluene concentration, and pH/ionic strength. It is demonstrated that T 2 protons strongly influenced by changes packing, while 1 generally insensitive these variables. also shown small...