• 한국작물학회지
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• 제23권2호
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• pp.99-104
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• 1978

This study was conducted to evaluate the yield performance, adaptation and stability of selected 17 local soybean lines, and determine the optimum number of locations and years in testing program. Among 12 lines having high performance than standard variety Bong-Eui, nine lines were better adapted to favorable environments with high stability. while three were adapted to unfavorable environments with instability. The data from over eight locations in a one-year test would be sufficient to evaluate high yielding lines but the accuracy of selection would be increased by testing in three years instead of one.

• Journal of Biosystems Engineering
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• 제35권1호
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• pp.53-63
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• 2010

The performance of two serial completely stirred tank reactors (CSTRs) for treatment of swine manure (SM) with Chinese cabbage silage (CCS) was studied. The two CSTRs of 41 liters each were connected in series and first reactor was fed swine manure with Chinese cabbage silage in 3:1 proportion by VS basis. The FOS/TAC, methane content (%) and pH were utilized as the parameters for the digester stability control. The FOS/TAC value was found to be effective indicator for instant digester condition. The stability of reactors can be obtained with the FOS/TAC value up to 1.0 with accumulation of FOS value below 10,000 mg/L. Material exchange method was effective in transferring the excess volatile fatty acids (VFA) from the first reactor to the second one and maintaining stability in both the reactors. The biogas yield and the methane yield was 0.55-0.61 and 0.41-0.42 L/g VS fed, respectively, at organic loading rate (OLR) of 2.2-2.6 g VS/L with total HRT of 32 days.

• 한국정밀공학회지
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• 제21권8호
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• pp.129-135
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• 2004

This paper discussed on the effect of an intermediate support on the stability of elastic material subjected to dry friction force. It is assumed in this paper that the dry frictional force between a tool stand and an elastic material can be modeled as a distributed follower force. The elastic material on the friction material is modeled for simplicity into an elastic beam on Winkler-type elastic foundation. The stability of beams on the elastic foundation subjected to distributed follower force is formulated by using finite element method to have a standard eigenvalue problem. The first two eigen-frequencies are obtained to investigate the dynamics of the beam. The eigen-frequencies yield the stability bound and the corresponding unstable mode. The considered beams lose its stability by flutter or divergence, depending on the location of intermediate support.

• KSBB Journal
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• 제22권4호
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• pp.185-190
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• 2007

Productivity of secreted recombinant protein depends largely on its stability in the extracellular environment with protease. Most hGM-CSF produced by transgenic tobacco cell cultures and secreted to the medium was confirmed to be rapidly degraded by protease in medium. To increase the productivity, therefore, various protein stabilizers such as gelling agents such as carrageenan and alginate, polymers, polyols, and amino acids have been tested. The stability of hGM-CSF in spent medium without cells was improved by the presence of gelling agents. However, the reason for the enhanced production by the addition of gelling agents may be due to the increased expression level and permeability rather than stability. The addition of DMSO inhibited the cell growth, but improved specific yield. The others were not effective for stability as well as hGM-CSF production.

• International Journal of Precision Engineering and Manufacturing
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• 제9권4호
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• pp.83-85
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• 2008

Redundant spurious loops and overlapping segments in stability lobe diagrams cannot be removed easily by regular methods. A programmatic approach is presented to detect multiple spurious loops occurring within the lobes. They are identified by reorganizing the numerical lobe data into speed-depth corners for subsequent removal. The same principle is then extended to remove overlapping segments of adjacent lobes to obtain a final continuous stability map. Unlike existing methods, the proposed methodology requires no interface with additional editing software, and can also yield stability lobe diagrams more quickly. The methodology is presented with lobe diagrams constructed using milling and turning models.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2000년도 춘계 학술대회지
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• pp.90-91
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• 2000

• 대한약학회:학술대회논문집
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• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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• pp.316.2-317
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• 2003

Immunoglobulin Y (IgY) obtained from chicken as the immunization host brings several advantages to antibody production, such as improved yield, lower cost, longer stability, and higher specificity than mammalian immunoglobulin. In the present study, we attempted to purify Maackia fauriei lectin using antilectin IgY-affinity chromatography in order to produce a good yield and to reduce the purification time. (omitted)

• Bulletin of the Korean Chemical Society
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• 제35권11호
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• pp.3249-3253
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• 2014

A novel triazole-functionalized phenolic resin was developed, and its thermal and flame-retardant properties were investigated. The triazole group was incorporated as a pendant unit on the phenolic resin via copper-mediated click chemistry between propargylated phenolic resin and benzyl azide. The newly-developed triazole-functionalized phenolic resin showed higher thermal stability and char yield, together with a reduced total heat release (THR), than the non-functionalized bare phenolic resin, indicating enhanced flame retardancy for the triazole-functionalized phenolic resin.

• 한국작물학회:학술대회논문집
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• 한국작물학회 1995년도 춘계 학술대회지
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• pp.22-23
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• 1995

• 한국전자파학회논문지
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• 제13권9호
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• pp.882-888
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• 2002

본 논문에서는 공정변화와 온도변화에 의한 MMIC의 성능저하를 보상할 수 있는 바이어스 안정화 회로를 제안하였다. 제안된 바이어스 안정화 회로는 기존의 정전류원을 사용하는 바이어스 회로와의 비교를 통하여 그 효과를 검증하였다. 두 구조를 동일한 조건으로 비교하기 위해 하나의 레이아웃에 두 구조를 채택한 증폭기를 동시에 설계 및 제작을 하였다. 공정오차는 세가지 경우 NOM, MIM, MAX로 구분하고 각각에 대해 고주파 특성을 측정하였다. 측정 결과로 정전류원을 가지는 바이어스회로를 채택한 증폭기 의 1.8 GHz에서의 이득변화는 6.4 dB, Ids 변화 7 mA이지만 제안된 바이어스회로를 채택한 증폭기는 이득변화는 2.1 dB, Ids 변화 3 mA로 우수한 특성을 보임을 확인하였다. 따라서, 제안된 바이어스 회로를 적용한 MMIC는 공정상의 변화와 온도 등에 의한 동작점의 변화를 보상하여 고주파특성의 감쇠를 보상할 수 있고 궁극적으로 회로의 수율을 개선할 수 있다. 제작된 회로의 전체크기는 1.2 mm $\times$ 1.4 mm이다.