• Bulletin of the Korean Chemical Society
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• 제32권1호
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• pp.347-349
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• 2011

• The Plant Pathology Journal
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• 제17권6호
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• pp.377.1-377
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• 2001

• 한국축산시설환경학회지
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• 제21권1호
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• pp.9-20
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• 2015

The livestock manure recycling have been performed worldwide because of its environmental and economic benefits. However, domestic standard protocol was nothing for high solid manure. Therefore, This paper was conducted to review database configuration of manure characteristics, analysis methods, bio-methane potential test for high solid manure recycling. In American society of agricultural engineers standard, manure characteristics indicated about sort of thirty types. This is important information to determine for manure recycling method. Furthermore, in order to determine exact manure characteristics recommended that synchronized chemical analysis method among studies. Bio-methane potential tests are widely performed in studies about estimation of organic substrates methane production. Although various methods and parameters were used, was no standard protocol and guideline in domestic. Bio-methane potential test methods and parameters were reviewed through various researches. Consequently, this paper is expected that assist to additional studies and manure characteristic database.

• Bulletin of the Korean Chemical Society
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• 제34권3호
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• pp.823-826
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• 2013

A low-${\varepsilon}$ solid-state NMR(Nuclear Magnetic Resonance) probe was developed for the spectroscopic analysis of two-dimensional $^{15}N-^1H$ heteronuclear dipolar coupling in dilute membrane proteins oriented in hydrated and dielectrically lossy lipid environments. The system employed a 800 MHz narrow-bore magnet. A solenoid coil strip shield was used to reduce deleterious RF sample heating by minimizing the conservative electric fields generated by the double-tuned resonator at high magnetic fields. The probe's design, construction, and performance in solid-state NMR experiments at high magnetic fields are described here. Such high-resolution solid-state NMR spectroscopic analysis of static oriented samples in hydrated phospholipid bilayers or bicelles could aid the structural analysis of dilute biological membrane proteins.

• Biotechnology and Bioprocess Engineering:BBE
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• 제3권2호
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• pp.61-66
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• 1998

Glycolipids produced by Pseudomonas aeruginosa YPJ-80 were characterized by chromatographic and spectorscopic techniques as a mixture of two rhamnolipids. For recovery of glycolipids from the culture broth, various isolation methods including ultrafiltration, adsorption and solvent extraction were compared. Ultrafiltration showed the best results in terms of glycolipids recovery. Further purification for spectroscopic analysis was carried out by adsorption chromatography and preparative thin layer chromatography. From the spectroscopic analysis, such as IR spectroscopy. FAB-MS, 1H-NMR and 13C-NMR and hydrolysis analysis, the glycolipids were identified as L-${\alpha}$-rhamnopyranosyl-${\beta}$-hydroxydecanoly-${\beta}$-hydroxydecanoate and 2-O-${\alpha}$-L-rhamnopyranosyl-${\alpha}$-L-rhamnopyranosyl-${\beta}$-hydroxydecanoyl-${\beta}$-hydroxydecanoate. Monorhamnolipid and dirhamnolipid lowered the surface tension of water to 28.1 mN/M and 29.3 mN/m, respectively.

• International Journal of Advanced Culture Technology
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• 제8권2호
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• pp.252-259
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• 2020

Wheatgrass is a type of young grass that contains a lot of vitamins, minerals, and protein even compared to grain products produced from its mature cereal plants. In the context of product development and increasing product sales value, a study on the use of wheatgrass extract as an ingredient of fermented beverage was conducted. In this study wheatgrass used was self-grown using a tray in the Laboratory. The variation of wheatgrass extracts used was obtained from the twin-gear type extractor, slow-squeeze type extractor, and chopped wheatgrass. In the extraction process, the performances of the process: density, extract yield, processing capacity, and the rate of production, were analyzed. For another analysis, the physicochemical properties both of wheatgrass extracts and fermented beverages were also analyzed. The physicochemical properties analyzed included TSS, pH, acidity, and others content. The results of extraction performance analysis and physicochemical characteristics of wheatgrass extract planted at 10-20℃ based on this research gave the best results using the twin-gear extractor. The twin-gear type of extractor used in this study. All of these results were also in accordance with the statistical analysis conducted in this study.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 추계학술대회
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• pp.65-67
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• 2017

모바일 컴퓨팅과 웨어러블 기술의 발전으로 인하여 일상생활 속에서 생체신호를 측정하는 다양한 웨어러블 디바이스가 개발 및 보급이 되면서, 생체신호를 활용한 건강관리서비스가 주목 받고 있다. 최근에는 다양한 생체신호 분석 툴을 활용하여 건강관리서비스가 개발 및 연구되고 있다. 대부분의 생체신호 분석 연구는 Matlab을 활용한다. 그러나, Matlab으로 개발한 알고리즘을 시스템에 적용하기 위해서는 소스의 변환 작업이 필요하다. 소스의 변환 작업을 생략할 수 있는 스마트 인터페이스를 제공하고자 한다. 본 논문은 Matlab에서 개발한 알고리즘을 시스템에 적용하기 위한 변환 기술을 생략하고, 소스 파일 자체를 시스템에서 실행시키기 위한 인터페이스를 개발한다.

• Advances in aircraft and spacecraft science
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• 제10권4호
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• pp.347-368
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• 2023

In the first part of this study, a numerical simulation model was developed using the mechanical APDL software to validate the results of the 3D-elastisity theory on the laminated sandwich plate developed by Panago. The numerical simulation model showed a good agreement to the results of Pagano's theory in terms of deflection, normal stresses, and shear stresses. In the second part of this study, the developed numerical simulation model was used to define different plates dimensions and fibers layup orientations to examine the load response in terms of deflection and stresses. Further analysis was implemented on the natural frequencies of laminated xxx plates of the plates. The layup configurations include Unidirectional (UD), Cross-Ply (CP), Quasi-Isotropic (QI), the linear bio-inspired known as Linear-Helicoidal (LH), and the nonlinear bio-inspired known as Fibonacci-Helicoidal (FH). The following numerical simulation model can be used for the design and study of novel, sophisticated bio-inspired composite structures in a variety of configurations subjected to sinusoidal or constant loads.

• 한국산학기술학회논문지
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• 제20권2호
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• pp.434-442
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• 2019

도시 내 빈번히 발생하는 홍수 피해를 해결하기 위한 대응 방안으로 자연상태의 수문순환 체계를 회복하기 위한 저영향개발(Low Impact Development, LID) 기법이 대두되고 있다. LID 요소기술 중 하나인 생태저류지는 유역에서 발생하는 유출수를 저류 및 침투하여 우수 유출수 및 비점오염물질 저감효과를 갖는 시설로 다양한 연구가 진행되고 있으나, 유출저감효과에 대한 분석은 미흡한 실정이다. 따라서 본 연구에서는 수문 해석이 가능한 K-LIDM을 이용하여 소규모유역에서 생태저류지의 유출 저감효과를 분석하였다. 시나리오를 구성함에 있어 생태저류지의 저류용량을 증가시키거나 유역과 생태저류지를 분할하였고 확률강우량을 활용하여 단기강우를 모의하였다. 분석결과 저류용량 증가에 따라 20%, 분산형 시스템에서 5~15% 이상의 유출 저감효과를 나타냈으며 향후 생태저류지의 저류깊이, 지반의 침투능 및 유출부의 직경과 높이 등 다양한 시나리오에 대한 연구가 수행된다면 생태저류지의 물순환 효율성에 관하여 보다 정량적인 분석이 가능할 것으로 기대된다.

• 한국기계가공학회지
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• 제19권11호
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• pp.78-86
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• 2020

A stress analysis was performed to verify the stability of the digging part of a garlic harvester. A finite element analysis was performed to examine the distribution and concentrated loads on the digging part of the blade and contact plate. Moreover, the stability and maximum deformation of the digging part were determined. Under a distributed load, the maximum principal stress, total deformation, and minimum safety factor ranged from 64-128 MPa, 0.35-0.70 mm, and 2.9-5.7, respectively. The analysis results for the distribution load indicated that the maximum stress occurred at the center of the blade. In contrast, under the concentrated load, the maximum principal stress, total deformation, and minimum safety factor ranged from 66-247 MPa, 0.35-0.79 mm, 1.48-5.53, respectively. The analysis results for the concentrated load indicated that stress and deformation were larger toward the edge and center, respectively.