Search results for: Jin Hwan Lee

Items from 1 to 20 out of 102 results

article

Extracts of Elaeagnus multiflora Thunb. fruit fermented by lactic acid bacteria inhibit SW480 human colon adenocarcinoma via induction of cell cycle arrest and suppression of metastatic potential

Rona Camille M. Lizardo, Hyun‐Dong Cho, Jin‐Hwan Lee, Yeong‐Seon Won, more

Journal of Food Science > 85 > 8 > 2565 - 2577

Abstract Elaeagnus multiflora Thunb. (cherry silverberry, CS) is an underutilized fruit with notable phytochemical profile and biological activities. However, there are few studies on cancer inhibitory effect using fermented CS fruits. This study aimed to develop fermented CS fruits using lactic acid bacteria and investigate its anticolorectal cancer (CRC) property and phenolic composition. SW480...

article

Bioconversion of γ-aminobutyric acid and isoflavone contents during the fermentation of high-protein soy powder yogurt with Lactobacillus brevis

Chung Eun Hwang, Md. Azizul Haque, Jin Hwan Lee, Yeong Hun Song, more

Applied Biological Chemistry > 2018 > 61 > 4 > 409-421

This study evaluated the changes in γ-aminobutyric acid (GABA) and isoflavone aglycone contents from soy powder yogurt (SPY) due to sprouting of soybean (1 cm) and fermentation with Lactobacillus brevis. The levels of GABA and the aglycone form increased, and the glutamate decarboxylase and β-glucosidase activities increased; however, the isoflavone glycoside and malonylglycoside contents decreased...

article

Particle Swarm Optimization Algorithm With Intelligent Particle Number Control for Optimal Design of Electric Machines

Jin Hwan Lee, Jun-Young Song, Dae-Woo Kim, Jong-Wook Kim, more

IEEE Transactions on Industrial Electronics > 2018 > 65 > 2 > 1791 - 1798

In this study, we propose a modified particle swarm optimization (PSO) algorithm, which is an improved version of the conventional PSO algorithm. To improve the performance of the conventional PSO, a novel method is applied to intelligently control the number of particles. The novel method compares the cost value of the global best (gbest) in the current iteration to that of the gbest in the previous...

article

Rapid characterization of metabolites in soybean using ultra high performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry (UPLC-ESI-Q-TOF-MS/MS) and screening for α-glucosidase inhibitory and antioxidant properties through different solvent systems

Yeon Hee Lee, Bokyeong Kim, Seung-Ryul Hwang, Kyun Kim, more

Journal of Food and Drug Analysis > 2018 > 26 > 1 > 277-291

This work was the first to investigate on the simultaneous characterization of metabolite profiles in soybean using UPLC-ESI-Q-TOF-MS/MS. Twenty two compositions were observed within 14 min from the methanol extract and confirmed as twelve isoflavones of three types and ten soyasaponins (Ab, Af, I–III, αg, βg, βa, γg, and γa). Moreover, the patterns of two chemicals showed considerable differences...

article

DL-3-n-butylphthalide induced neuroprotection, regenerative repair, functional recovery and psychological benefits following traumatic brain injury in mice

Yingying Zhao, Jin Hwan Lee, Dongdong Chen, Xiaohuan Gu, more

Neurochemistry International > 2017 > 111 > C > 82-92

Previous investigations suggest that DL-3-n-butylphthalide (NBP) is a promising multifaceted drug for the treatment of stroke. It is not clear whether NBP can treat traumatic brain injury (TBI) and what could be the mechanisms of therapeutic benefits. To address these issues, TBI was induced by a controlled cortical impact in adult male mice. NBP (100 mg/kg) or saline was intraperitoneally administered...

article

Analysis and Modeling of Permanent Magnet Variable Flux Memory Motors Using Magnetic Equivalent Circuit Method

Jun-Young Song, Jin Hwan Lee, Dae-Woo Kim, Yong-Jae Kim, more

IEEE Transactions on Magnetics > 2017 > 53 > 11 > 1 - 5

This paper presents an analytical method based on the magnetic equivalent circuit to derive permanent magnet (PM) load-lines of two general types of a variable flux memory motor (VFMM), which are circumferentially embedded (CE)-type and radially embedded (RE)-type PM motors. The proposed PM load-line models are valid and suitable for investigating the PM magnetization characteristics of VFMMs. It...

article

Characterization of metabolite profiles from the leaves of green perilla (Perilla frutescens) by ultra high performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry and screening for their antioxidant properties

Yeon Hee Lee, Bokyeong Kim, Soyoung Kim, Min-Sun Kim, more

Journal of Food and Drug Analysis > 2017 > 25 > 4 > 776-788

The objective of this research was to access the determination of metabolite profiles and antioxidant properties in the leaves of green perilla (Perilla frutescens), where these are considered functional and nutraceutical substances in Korea. A total of 25 compositions were confirmed as six phenolic acids, two triterpenoids, eight flavonoids, seven fatty acids, and two glucosides using an ultra high...

article

Distance-Based Intelligent Particle Swarm Optimization for Optimal Design of Permanent Magnet Synchronous Machine

Jin Hwan Lee, Jong-Wook Kim, Jun-Young Song, Dae-Woo Kim, more

IEEE Transactions on Magnetics > 2017 > 53 > 6 > 1 - 4

In this paper, we propose a novel particle swarm optimization (PSO), which is based on the Euclidian distance of particles. In the conventional PSO, the convergence speed is decreased, since several particles that are far from swarm does not converge but wander around search area. The proposed algorithm, which is named after distance based intelligent PSO, assigns a new position and velocity to the...

article

Characteristics Analysis Method of Axial Flux Permanent Magnet Motor Based on 2-D Finite Element Analysis

Jin Seok Kim, Jin Hwan Lee, Jun-Young Song, Dae-Woo Kim, more

IEEE Transactions on Magnetics > 2017 > 53 > 6 > 1 - 4

Three-dimensional (3-D) finite element analysis is generally required to analyze the performance of an axial flux permanent magnet (AFPM) motor because it has asymmetrical characteristics along the z-axis. Although the computing performance of CPU is enhanced owing to technological developement, a large amount of analysis time is required for 3-D finite element analysis (FEA). This paper presents...

article

Analysis and Modeling of Concentrated Winding Variable Flux Memory Motor Using Magnetic Equivalent Circuit Method

Jun-Young Song, Jin Hwan Lee, Dae-Woo Kim, Yong-Jae Kim, more

IEEE Transactions on Magnetics > 2017 > 53 > 6 > 1 - 4

In the preliminary design of the variable flux memory motor (VFMM), it is essential to examine the magnetization characteristics of the permanent magnet (PM) according to different direct-axis current pulses, which requires numerous parametric studies. In this paper, we propose a non-linear PM load-line model for concentrated winding surface-mounted PM VFMMs by making use of the magnetic equivalent...

article

Fossil diatom assemblages as paleoecological indicators of paleo-water environmental change in the Ulleung Basin, East Sea, Republic of Korea

Suk Min Yun, Taehee Lee, Seung Won Jung, Joon Sang Park, more

Ocean Science Journal > 2017 > 52 > 3 > 345-357

The fossil diatom assemblage record from two sediment cores obtained from the Ulleung Basin, East Sea, Republic of Korea, revealed changes in the diatom assemblage zones in PG1 and PD3 core samples. The two sediment cores were δC¹⁴ dated and approximately represented the late Pleistocene–Holocene. The analysis of age zones in the PG1 core and PD3 core was assessed based on the frequency of variations,...

article

Comparison of nutritional components (isoflavone, protein, oil, and fatty acid) and antioxidant properties at the growth stage of different parts of soybean [Glycine max (L.) Merrill]

Woo Duck Seo, Jae Eun Kang, Sik-Won Choi, Kwang-Sik Lee, more

Food Science and Biotechnology > 2017 > 26 > 2 > 339-347

This is the first study to investigate antioxidant capacities of isoflavones prepared using microwave-assisted hydrolysis method from different parts (seeds, leaves, leafstalks, pods, stems and roots) of soybean at growth stages. In addition, the fluctuations in the isoflavone, protein, fatty acid, and oil contents in R6-R8 (R6: beginning; R7: beginning maturity; R8: full maturity) seeds were confirmed...

article

Changes occurring in nutritional components (phytochemicals and free amino acid) of raw and sprouted seeds of white and black sesame (Sesamum indicum L.) and screening of their antioxidant activities

Tae Joung Ha, Myoung-Hee Lee, Woo Duck Seo, In-Youl Baek, more

Food Science and Biotechnology > 2017 > 26 > 1 > 71-78

The present study is the first to investigate the germination properties regarding phytochemicals, amino acids, total phenolics, and antioxidant capacities of white and black sesame seeds. Nutritional components and antioxidant effects showed considerable differences. Sesamine and sesamolin composition decreased (white: 4.21→1.72, 3.57→1.57 mg/g; black: 2.43→0.58, 1.36→0.45 mg/g) during germination...

chapter

Design strategy for single phase claw-pole type motor considering design parameter

Jin-Seok Kim, Jin-Hwan Lee, Dae-Woo Kim, Yong-Jae Kim, more

2016 19th International Conference on Electrical Machines and Systems (ICEMS) > 1 - 4

2016 19th International Conference on Electrical Machines and Systems (ICEMS)

Claw-pole type motor is known for its high inductance, saturation region and unique simple structure, which leads to nonlinear characteristic performance. Moreover, due to its unique structure, this type of motor needs to be analyzed using 3-D FEM (3-Dimensional Finite Element Method) that requires lots of solving time. Therefore, it is crucial to understand what effects design parameters has on motor...

chapter

A novel torque ripple reduction method for IPMSM using asymmetric notch lamination design

Kyungsoo Park, Jin Hwan Lee, Yong-Jae Kim, Sang-Yong Jung

2016 19th International Conference on Electrical Machines and Systems (ICEMS) > 1 - 4

2016 19th International Conference on Electrical Machines and Systems (ICEMS)

The purpose of this paper is to propose a novel torque ripple reduction method for vibration and nose minimization of an interior permanent magnet synchronous machine (IPMSM) by adopting asymmetric notch lamination design (ANLD). The existing asymmetric lamination designs are limited to asymmetric barrier design (ABD) of rotor configuration in IPMSM. To highlight the advantages of the proposed method,...

article

The identity of ‘Berkeleya scopulorum’ from Northeast Asia: Report on Climaconeis mabikii sp. nov. from temperate marine waters with notes on biogeography of the genus

Jinsoon Park, Jin Hwan Lee, Jong Seong Khim

Ocean Science Journal > 2016 > 51 > 4 > 591-598

While there have been many reports of the species ‘Berkeleya scopulorum’ from Northeast Asia mainly as Navicula scopulorum, the observation of the living specimen of the species has revealed that the species should be the member of the genus Climaconeis. Here we describe the species as Climaconeis mabikii sp. nov. based on microscopic observations by means of both light (LM) and scanning electron...

article

Regulation of therapeutic hypothermia on inflammatory cytokines, microglia polarization, migration and functional recovery after ischemic stroke in mice

Jin Hwan Lee, Zheng Z Wei, Wenyuan Cao, Soonmi Won, more

Neurobiology of Disease > 2016 > 96 > C > 248-260

Stroke is a leading threat to human life and health in the US and around the globe, while very few effective treatments are available for stroke patients. Preclinical and clinical studies have shown that therapeutic hypothermia (TH) is a potential treatment for stroke. Using novel neurotensin receptor 1 (NTR1) agonists, we have demonstrated pharmacologically induced hypothermia and protective effects...

chapter

Characteristics analysis method of axial flux permanent magnet motor based on 2-D finite element analysis

Jin-Seok Kim, Jin-Hwan Lee, Yong-Jae Kim, Sang-Yong Jung

2016 IEEE Conference on Electromagnetic Field Computation (CEFC) > 1

2016 IEEE Conference on Electromagnetic Field Computation (CEFC)

For the performance analysis of axial flux permanent magnet (AFPM) machine, three-dimensional (3-D) finite element analysis (FEA) is requisite, while it takes a huge time to calculate. In order to reduce the computation time, 3-D AFPM model is approximated to 2-D model in this study. The proposed approximation is based on linear synchronous machine topology. The accuracy of the proposed method is...

chapter

Distance based intelligent particle swarm optimization for optimal design of permanent magnet synchronous machine

Jin-Hwan Lee, Jun-Young Song, Jong-Wook Kim, Yong-Jae Kim, more

2016 IEEE Conference on Electromagnetic Field Computation (CEFC) > 1

2016 IEEE Conference on Electromagnetic Field Computation (CEFC)

In this study, we propose a novel intelligent particle swarm optimization(PSO). In case of PSO, when particles approach to optimum point, particles roam near global optimum. Therefore, PSO takes unnecessary function call and long convergence time. In order to solve these problems, we propose distance based intelligent particle swarm optimization(DbIPSO). DbIPSO calculate distance of every particle...

chapter

Analysis and modeling of variable flux memory motor using a lumped magnetic circuit method

Jun-Young Song, Jin Hwan Lee, Dae-Woo Kim, Yong-Jae Kim, more

2016 IEEE Conference on Electromagnetic Field Computation (CEFC) > 1

2016 IEEE Conference on Electromagnetic Field Computation (CEFC)

In this study, the magnetic characteristics of permanent magnet (PM) for variable flux memory motor are investigated by making use of magnetic equivalent circuit method, in order to determine detailed specifications. The proposed PM load-line model is valid for investigating transient magnetization state of PM considering non-linear magnetic characteristics. Its validity is evaluated through a comparison...

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ANTIOXIDANT ACTIVITY (18)
ISOFLAVONE (12)
ANTHOCYANIN (9)
TORQUE (7)
MAGNETIC FLUX (6)
ALGORITHM DESIGN AND ANALYSIS (5)
NMR (5)
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HPLC-DAD-ESI/MS (4)
MICROELECTRODES (4)
OPTIMAL DESIGN (4)
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PERMANENT MAGNET MOTORS (4)
PHENOLIC ACID (4)
SATURATION MAGNETIZATION (4)
SYNCHRONOUS MOTORS (4)
Α-GLUCOSIDASE (4)
BLACK SOYBEAN (3)
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ROASTING (3)
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ANTHOCYANINS (2)
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ELECTRIC MACHINES (2)
FERMENTATION (2)
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GLASS (2)
GLYCINE MAX (2)
GOLD (2)
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TRAUMATIC BRAIN INJURY (2)
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INFONA - science communication portal

Search results for: Jin Hwan Lee

Extracts of Elaeagnus multiflora Thunb. fruit fermented by lactic acid bacteria inhibit SW480 human colon adenocarcinoma via induction of cell cycle arrest and suppression of metastatic potential

Bioconversion of γ-aminobutyric acid and isoflavone contents during the fermentation of high-protein soy powder yogurt with Lactobacillus brevis

Particle Swarm Optimization Algorithm With Intelligent Particle Number Control for Optimal Design of Electric Machines

DL-3-n-butylphthalide induced neuroprotection, regenerative repair, functional recovery and psychological benefits following traumatic brain injury in mice

Analysis and Modeling of Permanent Magnet Variable Flux Memory Motors Using Magnetic Equivalent Circuit Method

Characterization of metabolite profiles from the leaves of green perilla (Perilla frutescens) by ultra high performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry and screening for their antioxidant properties

Distance-Based Intelligent Particle Swarm Optimization for Optimal Design of Permanent Magnet Synchronous Machine

Characteristics Analysis Method of Axial Flux Permanent Magnet Motor Based on 2-D Finite Element Analysis

Analysis and Modeling of Concentrated Winding Variable Flux Memory Motor Using Magnetic Equivalent Circuit Method

Fossil diatom assemblages as paleoecological indicators of paleo-water environmental change in the Ulleung Basin, East Sea, Republic of Korea

Comparison of nutritional components (isoflavone, protein, oil, and fatty acid) and antioxidant properties at the growth stage of different parts of soybean [Glycine max (L.) Merrill]

Changes occurring in nutritional components (phytochemicals and free amino acid) of raw and sprouted seeds of white and black sesame (Sesamum indicum L.) and screening of their antioxidant activities

Design strategy for single phase claw-pole type motor considering design parameter

A novel torque ripple reduction method for IPMSM using asymmetric notch lamination design

The identity of ‘Berkeleya scopulorum’ from Northeast Asia: Report on Climaconeis mabikii sp. nov. from temperate marine waters with notes on biogeography of the genus

Regulation of therapeutic hypothermia on inflammatory cytokines, microglia polarization, migration and functional recovery after ischemic stroke in mice

Characteristics analysis method of axial flux permanent magnet motor based on 2-D finite element analysis

Distance based intelligent particle swarm optimization for optimal design of permanent magnet synchronous machine

Analysis and modeling of variable flux memory motor using a lumped magnetic circuit method

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