A5089777146- Cardiac Arrest and Resuscitation
- Sepsis Diagnosis and Treatment
- Emergency and Acute Care Studies
- Mechanical Behavior of Composites
- Aluminum Alloys Composites Properties
- Trauma and Emergency Care Studies
- Advanced ceramic materials synthesis
- Mechanical Circulatory Support Devices
- Hemodynamic Monitoring and Therapy
- Aluminum Alloy Microstructure Properties
- Fatigue and fracture mechanics
- Advanced materials and composites
- Heart Rate Variability and Autonomic Control
- Pharmacy and Medical Practices
- Structural Analysis of Composite Materials
- Metal Forming Simulation Techniques
- Respiratory Support and Mechanisms
- Fuel Cells and Related Materials
- Structural Health Monitoring Techniques
- Textile materials and evaluations
- Material Properties and Applications
- Structural Behavior of Reinforced Concrete
- Fiber-reinforced polymer composites
- Composite Structure Analysis and Optimization
- Poisoning and overdose treatments
Korea University Medical Center
2017-2025
Korea University
2004-2024
Gangnam Severance Hospital
2022
Yonsei University
2022
Samsung Medical Center
2018
Sungkyunkwan University
2018
Pohang University of Science and Technology
2000-2013
Korea Electric Power Corporation (South Korea)
2011
National High Magnetic Field Laboratory
2007
Florida State University
2007
Fatigue behavior of glass fiber reinforced epoxy composite materials has been studied analytically. A new concept called "fatigue modulus," which is defined as a slope applied stress and resultant strain at specific cycle introduced. modulus degradation using an assumption that the fatigue degrada tion rate follows power function cycle. Theoretical equation for predicting life formulated its rate. This rela simplified by failure criterion practical application. It proved final formula...
Cumulative damage during fatigue is studied analytically. Extensive reviews are per formed on the published models. Three different cumulative models defined using several physical variables such as modulus and resultant strain. Proposed model I modulus, while II III strains. derived functions of nor malized applied stress level, r, number cycle, n. It verified that proposed has better agreement with two level experimental data than other
ABSTRACT Aim: The aim of this study was to evaluate the clinical utility lactate/albumin (L/A) ratio as a predictive factor 28-day mortality in critically ill sepsis patients. Methods: This is retrospective observational from prospectively collected multicenter registry 10 emergency departments (EDs) teaching hospitals that participated Korean Shock Society. It enrolled patients who were 19 years age or older had suspected confirmed infection and evidence refractory hypotension...
Abstract The objective of this study was to evaluate the prognostic value C-reactive protein (CRP), procalcitonin (PCT), and their combination for mortality in patients with septic shock. This multicenter, prospective, observational conducted between November 2015 December 2017. A total 1,772 shock were included, overall 28-day 20.7%. Although both CRP PCT elevated non-survivor group, only had statistical significance (11.9 mg/dL vs. 14.7 mg/dL, p = 0.003, 6.4 ng/mL 8.2 ng/mL, 0.508)....
Abstract Cold Compaction Molding and Sintering of Ultra High Molecular Weight Polyethylene (UHMWPE) has been examined as a function particle size, sintering time temperature, cooling rate. Properties nearly equivalent to those obtained by compression molding can be from samples with fibrous morphology, sintered just above the melting point, further improvement possible control size addition fine particles normal molecular weight linear polyethylene. UHMWPE nodular morphology poorly.
Extracorporeal cardiopulmonary resuscitation (ECPR) has been considered in selected candidates with potentially reversible causes during a limited period. Candidate selection and the identification of predictable conditions are important factors determining outcomes CPR emergency department (ED). The objective this study was to determine key indicators develop prediction model for survival hospital discharge patients sudden cardiac arrest who received ECPR.This retrospective analysis based...
Abstract Background A favorable neurological outcome is closely related to patient characteristics and total cardiopulmonary resuscitation (CPR) duration. The CPR duration consists of pre-hospital in-hospital durations. To date, consensus lacking on the optimal Therefore, this study aimed determine upper limit duration, cut-off time at level, switch from conventional alternative such as extracorporeal CPR. Methods We conducted a retrospective observational using prospective, multi-center...
Introduction The evaluation of acute poisoning is challenging due to varied toxic substances and clinical presentations. new-Poisoning Mortality Score was recently developed assess patients with showed good performance in predicting in-hospital mortality. objective this study externally validate the compare it Modified Early Warning Score.
Shock is a life-threatening condition characterized by generalized circulatory failure, which can have devastating consequences if not promptly treated. Thus, early prediction and continuous monitoring of physiological signs are essential for timely intervention. While previous machine learning research in clinical settings has primarily focused on predicting the onset deteriorating events, importance ongoing state patient's post-onset often been overlooked. In this study, we introduce novel...
Mastering the movement laws of hard overlying rock layers is foundation development coal mining technology and plays an important role in improving mine safety production. Therefore, indoor similar simulation experiment was conducted based on actual face to test strain variations pre-embedded optical fibers model using distributed fiber optic sensing. Finally, distribution curve used characterize form state layer fractured blocks. The experimental results showed following. (1) horizontally...
Abstract Graphite reinforced conductive polymer composites (CPCs) with high filler loadings were fabricated by compression molding technique. Various sizes and shapes of graphite particles mixed phenol resin to impart the electrical conductivity in composites. Fabricated CPCs showed good (>100 S/cm) flexural strength (>40 MPa) for bipolar plate electrolyte membrane (PEM) fuel cells. The was affected formation networks among particles. made sphere-type (SG-CPCs) had same physical density...
Nighttime hospital admission is often associated with increased mortality risk in various diseases. This study investigated compliance rates the Surviving Sepsis Campaign (SSC) 3-h bundle for daytime and nighttime emergency department (ED) admissions clinical impact of on patients septic shock.We conducted an observational using data from a prospective, multicenter registry shock provided by Korean Shock Society 11 institutions November 2015 to December 2017. The outcome was rate SSC...
The Sepsis-3 criteria introduced the system that uses Sequential Organ-Failure Assessment (SOFA) score to define sepsis. cardiovascular SOFA (CV SOFA) scoring needs modification due change in guideline-recommended vasopressors. In this study, we aimed develop and validate modified CV score.We developed, internally validated, externally validated using suspected infection cohort, sepsis septic shock cohort. primary outcome was 28-day mortality. constructed with consideration of recently...
Interlaminar fracture behavior of composite materials under static and cyclic loadings has been studied using a width tapered double cantilever beam specimen. The energy is evaluated by compliance, area methods. comparison results show that the initial could be either or method while crack growth resistance calculated compliance method. Increases in criti cal load due to fiber bridging are predicted power function area. interlaminar fatigue through con stant strain release rate range test. A...
Abstract The applicability of powder compaction and sintering techniques to the processing ultra high molecular weight polyethylene (UHMWPE) is demonstrated. With proper procedure type UHMWPE powder, mechanical properties obtained are nearly equivalent those by conventional melt processes. were optimized selection a temperature just above melting point close control particle size distribution. processability dependent on morphology powder. Only powders with fibrous provided good after...
To evaluate the clinical characteristics, therapeutic interventions, and outcomes of patients with septic shock admitted to emergency department (ED).This study was a preliminary, descriptive analysis prospective, multi-center, observational registry EDs 10 hospitals participating in Korean Shock Society. Patients aged 19 years or older who had suspected confirmed infection evidence refractory hypotension hypoperfusion were included.A total 468 enrolled (median age, 71.3 years; male, 55.1%;...
Background: The early diagnosis and prompt treatment of sepsis can enhance clinical outcomes. This study aimed to assess the relationship between point-of-care testing (POCT) for lactate levels both adherence Surviving Sepsis Campaign (SSC) guidelines mortality rates among patients in emergency department (ED). We hypothesized that bedside POCT would lead better Methods: conducted a pre–post observational utilizing data from prospectively collected registry. Following introduction POCT, were...