• 대한한의학원전학회지
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• 제33권1호
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• pp.159-178
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• 2020

Objectives : The purpose of this paper is to study the metaphor that the liver is the admiral from which strategic planning is derived in 『Suwen Linglanmidianlun』 in relation to Liver function. Methods : Annotations to the verse along with descriptions of strategic planning in classical texts and their relation were examined. Results : Previous annotators described the Admiral organ and Strategic Planning separately, in which it is difficult to fully explain the totality the two. They cannot be separated from each other, and only when they are in dependence of each other can they become complete. Liver function as described in classical texts and contemporary text books such as detoxification and sterilization all embody this meaning of strategic planning of an admiral. Conclusions : Reinterpretation of the Liver function based on an integrated understanding of the Liver as described in 『Suwen Linglanmidianlun』 is required. This will allow for better understanding of what the metaphor means, and to better connect this description to Liver physiology for an integrated understanding of the Liver itself in Korean Medicine.

• 한국항행학회논문지
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• 제17권2호
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• pp.218-224
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• 2013

무선 멀티미디어 센서네트워크 (WMSN : Wireless Multimedia Sensor Networks)에서 업 링크 오버플로우는 자원 소모, 지연, 그리고 트래픽 혼잡을 가중시킨다. 본 논문에서는 중요도를 이용한 새로운 트래픽 혼잡 제어 기법을 제안한다. 제안된 기법은 미디어 트래픽을 분산하여 혼잡을 제어하며, 우선순위에 따라 패킷들을 공평하게 제어한다. 이때 패킷들을 공평하게 제어하기 위해 패킷 큐 스케줄러 PQS (Packet Queue Scheduler)를 제안하며, 제안된 PQS는 노드들의 특정 위치에 관계없이 모든 센서 노드들에게 공평한 기회를 제공한다. 시뮬레이션 결과 제안된 기법이 다른 비교 결과 기법들에 비해서 처리율, 지연율, 링크 품질, 그리고 버퍼 큐 제어율이 효율적임을 보인다.

• Korean Chemical Engineering Research
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• 제48권3호
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• pp.397-400
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• 2010

스크린 프린팅에서의 계면유체역학적인 문제를 알루미나 나노입자를 물에 분산시킨 점성과 탄성을 갖는 모델잉크를 대상으로 실험적으로 연구하였다. 형상이 다른 스크린 패턴을 통과한 잉크를 젖음성이 다른 고체면에 인쇄될 때 인쇄형상에 대하여 연구한 결과 고체면에의 인쇄 형상은 단순히 스크린 패턴이나 평형상태의 접촉각에 의하여만 결정되지 않음을 알 수 있었다. 또한 오목한 모서리와 볼록한 모서리의 차이는 점도에 따라 달라짐을 볼 수 있었다. 특히 잉크의 탄성이 테두리의 형태에 영향을 미치는 것을 알 수 있었다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 추계학술대회 논문집 Vol.19
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• pp.176-177
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• 2006

Two kinds of alumina nanofluids are prepared by dispersing $Al_2O_3$ nanoparticles m transformer oil. The thermal conductivity of the nanoparticle-oil mixtures increases with particle volume fraction and thermal conductivity of the solid particle itself. The $Al_2O_3$ nanoparticles at a volume of 0.5% can increase the thermal conductivity of the transformer oil by 5.7%, and the overall heat transfer coefficient by 20%. From the natural convection test using a prototype transformer, the cooling effect of $Al_2O_3$-oil nanofluids on the heating element and oil itself is confirmed. However, excessive quantities of the surfactant have a harmful effect on viscosity, and thus it is strongly recommended to control the addition of the surfactant with great care.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 추계학술대회 논문집 학회본부 C
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• pp.822-824
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• 1998

The lithium polymer battery with polymer electrolyte is expected as a safe and long cycle life battery. This paper reports primarily the recent development results of a solid polymer electrolyte, which is a key point of the secondary battery system. The new type of polymer electrolyte was prepared under a dry Ar atmosphere by dissolving $LiCIO_4$ in a matrix of EC, PC and then dispersing polyacrylonitrile(PAN). Also adding some inorganic filler $Al_2O_3$. The dispersed solution heated at $120^{\circ}C$. The polymer electrolyte were characterized by EIS(Electrochemical Impedance Spectroscopy), TGA(Thermo Gravimetric analysis), DMA(Dynamic Mechanical Analyzer), DSC (Differential Scanning Calorimetry). The lithium ion yield is 0.29 when PAN-$Al_2O_3$ which was applied DC 5mV. The ionic conductivity of PAN, PAN-$Al_2O_3$ polymer electrolytes were showed $1.0{\times}10^{-4}S/cm$, $8.4{\times}10^{-4}S/cm$ at room temperature. When inorganic filler was added in the polymer electrolyte, ionic conductivity and lithium yield more larger than without inorganic filler.

• 한국도서관정보학회지
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• 제15권
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• pp.79-111
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• 1988

The purpose of this study has its meaning to indicate the direction on collection and preservation of national literature which is one of the must important functions of the Central National Library. The Central National Library is, however, a representative library of our country and collect every kind of literature and to meet the requests of its users, the present situation of The Central National Library can't be performed sufficiently on these actions. According to studies of this paper, it have suggested the following five methods as a method of collecting national literature. First, the method by registering copyright endowing the number of copyright like ISBN. Second, the method a n.0, pplied by revising and su n.0, pplementing present legal deposit system. Thirdly, the method that the central one institution secure national budget collect literature of nation i.e., central intensive collection one. Fouthly , method of collecting literature by partial charge through local library networks. Fifthly, method by subject intensive collecting. As the preserving method of national literature, this research has indicated the following two ways. First, to keep the literatures forever, the method of The Central National Library keeps records as a limited volume. Second, The method of dispersing records as the local libraries. To put these methods into practice, it must be preceded that not only national helps, budget secures are needed but special committee must be organized to keep and preserve national literatures and material range also be extended and bibliographies for information data issuing must be worked out.

• 대한인간공학회지
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• 제24권4호
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• pp.23-30
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• 2005

The mailman's shoes should be designed in due consideration of occupational features they spend most of times to walk. For that reason, the shoes required functions to reduce the foot fatigue and to protect body by dispersing the body weight to the whole foot. In this research, for the functional improvement of the insole, insoles are investigated and analyzed by biomechanics experimentation. Under the base of these experimental results, we develop insoles that can reduce the body load and muscular-skeletal disorder. The pressures are concentrated on the metatarsus and heel by the result of analyzing pressure distributions of the using shoes. Accordingly, we offer the prototype functional insole that is ranked from high pressure to low pressure on the base of a shock absorb function. This prototype functional insole is examined for statistical significance by pressure distribution areas. The experimental results show that pressure areas are dispersed to whole foot, for this reason, pressures of the metatarsus and heel are reduced. Results of this research can not only improve the function of insoles which is suitable for occupational features, but also be a base on constructing data bases for biomechanics gait insoles.

• 한국세라믹학회지
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• 제34권11호
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• pp.1187-1197
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• 1997

Dry gel composed of primary particles more homogeneous than starting boehmite powder was prepared by dispersing and gelling the boehmite powder. The transformation temperatures of boehmite powder, dry gel seeded with 0, 1, 3, 5 wt% $\alpha$-Al2O3, and ball milled gel were 1192$^{\circ}C$, 1184$^{\circ}C$, 1141$^{\circ}C$, 1119$^{\circ}C$, 1117$^{\circ}C$, and 1106$^{\circ}C$, respectively. Sintering behavior of dry gel without seed was similar to that of boehmite powder, but the sintered density of dry gel was improved as much as 10%~15% than boehmite powder. In the case of dry gel seeded with 5 wt% $\alpha$-Al2O3, sintering behavior was much improved. The relative density of the gel seeded with 5 wt% $\alpha$-Al2O3 was 96% when sintered at 140$0^{\circ}C$ for 1h. On the other hand, ball milling of the non-seeded sol for 48h resulted in the relative density of 97% when sintered at 130$0^{\circ}C$ for 1h. The size and amount of $\alpha$-Al2O3 particles added by ball milling were 0.107 ${\mu}{\textrm}{m}$ and 0.5 wt%.

• KSBB Journal
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• 제14권6호
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• pp.737-741
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• 1999

본 연구에서 분리된 phenanthrene 분해균주의 대부분이 소수성을 나타내었고, 미생물계면활성제를 생산하면서 분해하는 균주보다 phenanthrene 분해능이 높았다. 균주 H6의 경우 phenanthrene 분해시 생산되는 미생물계면활성제는 포도당을 분해할 때도 생산되면 미생물의 성장과 더불어 증가하다가 stationary phase에서 일정하게 유지되었다. H6는 Bacillus subtilis로서 분리된 미생물계면활성제는 lipopeptide이었으며 H6에서 추출한 미생물계면활성제는 pH 2 이하에서 거의 회수되었고, 분산력이 Tween 80이나 Brij 30 등 화학계면활성제보다 높았고 열에 강한 특성을 보였다.

• KSBB Journal
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• 제13권1호
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• pp.65-70
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• 1998

지질 생산 효모인 Rhodotorula glutinis K -501이 생산하는 세포외지질(extracellular lipid)의 물리화학적 성질을 조사하여 생체 계면활성제로서의 응용 가능성을 검토하였다. 분석실험 결과 생산된 세포외지질은 당지질계 물질임을 알 수 있었다. 세포외지질의 임계미셀농도와 표면장력은 각각 89mg/L와 31dyne/cm로서 계면활성제로서 매우 우수한 표면활성을 가지고 있었으며 넓은 범위의 pH에서 표면장력의 값은 일정하였다. 상용 계면활성제인 Tween 80과 Triton X-100에 비하여 세포외지질은 각각2-3배 높은 유화도와 1.3배 높은 분산력을 가지고 있었다.