A5044643576- Educational Systems and Policies
- Education, Safety, and Science Studies
- Polymer composites and self-healing
- Educational Research and Pedagogy
- Education and Learning Interventions
- Dyeing and Modifying Textile Fibers
- Flame retardant materials and properties
- Photopolymerization techniques and applications
- biodegradable polymer synthesis and properties
- Advanced Polymer Synthesis and Characterization
- Microplastics and Plastic Pollution
- Food Quality and Safety Studies
- Cultural Heritage Materials Analysis
- Synthesis and properties of polymers
- Polyoxometalates: Synthesis and Applications
- Additive Manufacturing and 3D Printing Technologies
- Laser Design and Applications
- Photonic and Optical Devices
- Transition Metal Oxide Nanomaterials
- Gas Sensing Nanomaterials and Sensors
- Semiconductor Lasers and Optical Devices
- Water Quality Monitoring and Analysis
- Fiber-reinforced polymer composites
- Electrospun Nanofibers in Biomedical Applications
- Natural Fiber Reinforced Composites
Inje University
2025
Seoul National University
2008-2024
Jeju National University
2021
Kyungpook National University
2016-2017
Hannam University
2017
Chonnam National University
2008
Pusan National University
1999-2007
매운 고추와 맵지 않은 고추를 이용하여 고추장 및 김치용으로 분쇄된 고춧가루의 입도별 분포를 확인하고 이에 따른 색도, ASTA값 캡사이신 함량을 비교분석 하였다. 품종에 관계없이 고추장용 고춧가루에서는 425～300 ㎛의 크기가 가장 많았고 이를 기준으로 입자의 작아지거나 커질수록 그 함량이 적어지는 것으로 나타났다. 김치용 1000 ㎛ 이상의 입도를 가지는 고춧가루가 포함되어 있었으며 고추장용보다 입도분포가 불규칙하게 색은 크기에 따라 색의 차이가 나타나는 것을 확인할 수 있었으며, 작을수록 색도 값(Hunter Lab)이 증가하였다. 역시 높은 값을 보였다. 시료의 capsaicinoids 함량은 전반적으로 작아질수록 증가하여 색도와 ASTA값의 결과와 비슷한 경향을 이러한 물리적 특성은 품질평가 시 중요한 요소로 작용할 있다고 판단되며 보다 다양한 연구가 진행되어야 한다고 생각된다.
Abstract Microcapsule with poly(ethylene‐ co ‐vinylacetate) (EVA) core‐polyurethane (PU) shell structure was synthesized by interfacial polymerization in aqueous polyol dispersion ethylene diamine as the chain extender of toluene diisocyanate poly(vinyl alcohol) solution stabilizing agent. The effects constituent on average particle size and distributions, morphologies, color strength, friction fastness core‐shell particles were investigated to design microcapsule. printed fabrics EVA...
Tricrecyl phosphate(TCP)-containing polyurea microcapsules were prepared by interfacial polymerization using aromatic 2,4-toluene diisocyanate(TDI) and ethylenediamine(EDA) as wall forming materials. The effects of the protective colloids polyvinylalcohol(PVA) gelatin investigated through experimentation. mean size was smaller surface morphology microcapsule PVA colloid much smoother than gelatin. As concentration increased, membrane became more stable, thermal stability particle smaller,...
This study aims to conduct a systematic literature review on collaborative learning research in elementary and secondary mathematics education Korea, explore various characteristics related the research, discuss areas for improvement. To achieve this, this presents protocol analyzing with focus collaboration cooperation, following methodology. Then analyze selected studies based themes derived from protocol. As result of review, were categorized into eight main themes: keywords, small group...
The tarsus in dogs has a complex structure that makes its evaluation relatively challenging.Because an accurate diagnosis of the is difficult through basic examinations alone, imaging tests are essential.Previous studies have explored anatomical and radiological features canine using several modalities.However, utility across different modalities not been thoroughly evaluated.This study aimed to visualize tarsal structures magnetic resonance (MRI) ultrasonography, compare their utility,...
In this paper an intelligence embedding quadruped pet robot is described. It has 15 degrees of freedom and consists various sensors such as CMOS image, voice recognition sound localization, inclinometer, thermistor, real-time clock, tactile touch, PIR IR to allows owners interact with according human's intention well the original features animals. The architecture flexible adopts embedded processors for handling provide modular structure. also used additional purpose like security, gaming...
본 논문에서는 균열 진전문제에 대하여 페리다이나믹스 이론을 이용하여 설계민감도 해석 및 구조 최적설계를 수행하였다. 페리다이나믹스는 해의 불연속성을 다루기 어려웠던 기존의 연속체 이론에 비해 진전문제와 같은 가지는 문제를 자연스럽게 표현할 수 있다는 장점을 가지고 있다. 진행하기 위하여 애조인 변수법으로 설계민감도를 유도하였다. 특히 균열이 진전되더라도 계산된 변위장과 변형에너지에 대한 값은 유한차분법과 비교하여 매우 정확하고 효율적임을 보였다. 이를 바탕으로 간단한 인장응력 하의 균열진전 문제에 균열의 분기가 발생하는 위치를 조절하기 정해진 시간구간에서 변형에너지 값을 줄이는 방향으로 최적의 재료분포로 해석을 수행한 결과 분기점을 늦출수 있음을 확인하였다.Based on a bond-based peridynamics theory for dynamic crack propagation problems, this paper presents design sensitivity...
Poly(<TEX>$\varepsilon$</TEX>-caprolactone) nano/microcapsules(nmcPCL) containing phytoncide oil were synthesized by emulsion diffusion method using ethyl acetate and poly(vinyl alcohol) (PVA) as an organic solvent stabilizer respectively. The influence of the degree saponofication PVA weight ratio core to wall materials was investigated design nanocapsules in terms particle size, morphology, stability. encapsulated nmcPCL characterized FT-IR spectrometry, size analyzer scanning electron...
The study has attempted to introduce a new coating than the conventional standardized method of spray, padding and roll coating. focused on finding condition for separating water organic layer in marble bath surface effects according kind raw hide. It was found that dyestuff-free be used input amount initial insoluble pigment added should adjusted following change area order get efficient effect while preventing coagulation layers. Eventually, amorphous high value-added leather could...
As the basic study to investigate mechanism of improvement in dyeing fastness natural dyes on silk fabrics, optical behavior tannin solution, optimal condition treatment and changes physical structure fabrics were studied tannin. content fabric was increased, value ξ-potential became negative. crystallinity crystallite size decreased. The degree orientation also decreased with treatment. concentration increased its treating condition, K/S tannin-treated increased. Because gave rise yellowing...
Regenerated composite fibers are prepared from solution(styela clava tunics /poly vinyl alchol) using N-methylmorpholine-N-oxide(NMMO)/water(87/13)(wt/wt) as a solvent by dry-wet spinning. The chemical cellulose (94%, <TEX>${\alpha}$</TEX>-cellulose content) used for this study is extracted styela (SCT, Midduck), which treated in process and mechanical grinding. structure physical properties of regenerated were investigated through IR-spetra, DSC, TGA SEM. optimal blend ratio SCT/PVA...