A5114514368- Innovative concrete reinforcement materials
- Structural Behavior of Reinforced Concrete
- Concrete and Cement Materials Research
- Quantum Chromodynamics and Particle Interactions
- Innovations in Concrete and Construction Materials
- Inertial Sensor and Navigation
- Natural Fiber Reinforced Composites
- Advanced Manufacturing and Logistics Optimization
- Target Tracking and Data Fusion in Sensor Networks
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Fire effects on concrete materials
- Material Dynamics and Properties
- Advanced NMR Techniques and Applications
- Structural Load-Bearing Analysis
- Concrete Properties and Behavior
- High-Energy Particle Collisions Research
- Magnetic Properties and Applications
- Optimization and Packing Problems
- Glass properties and applications
- Underground infrastructure and sustainability
- Phase-change materials and chalcogenides
- Aerospace and Aviation Technology
- Autoimmune and Inflammatory Disorders
- scientometrics and bibliometrics research
Kumoh National Institute of Technology
2019-2024
Pusan National University
2001-2023
Hyosung Corporation (South Korea)
2021
Daejin University
2016
Pusan National University Hospital
2013
In-Q-Tel
2013
Semyung University
2004
Abstract This study was conducted to evaluate the seismic performance of an exterior precast concrete (PC) beam–column joint with ultra-high-performance fiber-reinforced (UHPFRC). Currently, 45 MPa non-shrinkage mortar is used as grouting for connection between PC beams and columns. In this study, specimens were designed using 120 UHPFRC a agent connecting members. The shear reinforcement effect confirmed reduce cracks in core; trend similar reduced rebars. maximum moment test specimen...
The H-dibaryon resonance was sought by a ΛΛ invariant mass spectrum that obtained the C12 (K−,K+ΛΛX) reactions. We observed bump near threshold, as reported previous experiment (KEK E224), with better statistics. Data were compared results of cascade model calculation including final state interactions consistent newly measured binding energy ΛΛ6He. No significant enhancements above levels predictions observed. resulting upper limit for production cross section H range between and ΞN...
As part of the research on cement composites using cellulose nanocrystal (CNC) aqueous solution instead general water, this study produced high-toughness reinforced with flax and steel fibers to improve tensile deformation capacity, assessing isothermal conduction calorimetry analysis, drying shrinkage, strength characteristics. The mixing amount CNCs was 0.4, 0.8, 1.2 vol.% by volume cement, an prepared ultrasonication dispersion method. When comparing results experiment according CNC...
There are few reports of the treatment lumbar tuberculous spondylitis using posterior approach. Between January 1999 and February 2004, 16 patients underwent interbody fusion with autogenous iliac-bone grafting pedicle screw instrumentation. Their mean age at surgery was 51 years (28 to 66). The follow-up period 33 months (24 48). clinical outcome assessed Frankel neurological classification Kirkaldy-Willis criteria. On classification, one patient improved by two grades (C E), seven grade,...
The scoliosis observed in chickens after pinealectomy resembles that seen humans with an adolescent idiopathic scoliosis, suggesting melatonin deficiency may be responsible. However, to date there have been no studies of pineal gland glucose metabolism patients might support this hypothesis. We examined the excretion urinary 6-sulfatoxyl-melatonin as well 14 and compared them those 13 gender-matched healthy controls using F-18 fluorodeoxyglucose brain positron emission tomography. There was...
Background and Objective Interleukin‐6 ( IL ‐6) is a key proinflammatory cytokine that has been considered to be important in the pathogenesis of periodontal disease. Therefore, host‐modulatory agents directed at inhibiting ‐6 appear beneficial terms attenuating disease progression potentially improving susceptibility. In current study, we investigated effect flavonoid isorhamnetin on production murine macrophages stimulated with lipopolysaccharide LPS) from P revotella intermedia , pathogen...
The use of unmanned aerial vehicle (UAV) applications has grown rapidly over the past decade with introduction low-cost microelectromechanical system (MEMS)-based sensors that measure angular velocity, gravity, and magnetic field, which are important for an object orientation determination. However, also been limited because their readings easily distorted by unwanted internal and/or external noise signals such as environmental disturbance, lead to errors in attitude heading estimation...
Ionic conductivities in the bismuth germanate silicate (BGSO) glasses have been investigated frequency range 100 Hz to 15 MHz and temperature from 300 K above glass transition Tg. The frequency-dependent electrical data discussed framework of complex impedance power-law conductivity. conductivity is strongly composition dependent it follows Arrhenius relation experimental range. activation energies dc ac obtained by analysis show that BGSO satisfy Barton, Nakajima, Namikawa (BNN) relation....
In this study, the effect of cellulose nanocrystals (CNCs) on fire resistance properties fiber-reinforced cement composites was investigated. The main variables were CNCs content (0.4, 0.8 and 1.2vol.% compared with cement), steel fiber ratio, exposure temperature (100, 200, 400, 600 800oC). properties, i.e., residual compressive strength, flexural porosity, evaluated in relation specimens. suspensions prepared to composited dispersion method magnetic stirring ultra-sonication. are effective...
In various applications, the extended Kalman filter (EKF) has been vital in estimating a vehicle’s translational and angular motion 3-dimensional (3D) space. It is also essential for fusion of data from multiple sensors. However, EKF to perform effectively, optimal process noise covariance matrix (Q) measurement (R) must be chosen correctly. The use challenging due need an easy mechanism select Q R values. As result, this research focused on developing algorithm that can easily applied...
This experimental research was performed to evaluate the shear and flexural behavior for two cases of reinforced concrete beams: ultrahigh‐performance (UHPC) normal‐strength jacketed with UHPC. The experiment examine optimum para‐aramid fiber reinforce ductile UHPC, test variables diameter length. Beam tests were then performance UHPC beams. beam without stirrups conducted behavior, respectively. jacketing reinforcement
Highly oriented rod-shaped crystals were grown during crystallization of bulk amorphous Li2B4O7 under a low ac electric field ∼5V∕mm. The crystal c axis that is the long direction rods and perpendicular to flat surface sample parallel applied electric-field direction. crystals, with an alignment within declined angle ∼15°, are so along compared those other directions geometrical structure each rod quasi-one-dimensional. measured electromechanical coupling coefficient kt=0.47 comparable...
The ultra-high performance concrete (UHPC) has compressive strength over 100 MPa. latest study about UHPC is reaching higher bending as well than conventional concrete. typical method the fiber reinforced purpose of this evaluated (UHPFRC) with single fibers and composite which mixed p-A (para-Aramid) other fibers. In result slump flow test, flow-ability more superior strength, specimens that steel are highest strength. authors were confirmed had competitiveness compared through evaluation test.
Brushless DC motors applied in many control systems because of the good respose characteristic and easy characteristic. The speed BLDC is important systems. This paper has designed PSO-PID controller for motors. PSO algorithm optimized parameters PID controller. several methods obtained optimal inertia weight by comparison. confirmed performance proposed through simulation results.
We determine ΛΛ scattering parameters from a invariant mass spectrum that was obtained by 12 C (K - , K + ΛΛ) reaction at the KEK Proton Synchrotron. In framework of Watson's procedure, length [Formula: see text] and effective range are most consistent with values predicted using Nijmegen soft core models (NSC97's). However, hard-core ND ( G -matrix) extended soft-core (ESC00) out two standard deviations determined parameters.