• Proceedings of the KIEE Conference
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• 1999.07d
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• pp.1783-1785
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• 1999

In this paper, we apply V-Q Lissajoucs' figure for observation of a V-Q (Voltage-Charge) hysteresis loop at interface between phosphor and insulation layer in P-ELDz which are a simple structure and the back lighting of LCDs (Liquid Crystal Display). In V-Q Lissajous' figure, we measured a change of hysteresis loop according to the thickness of Insulation and phosphor layer. From experiment result, we will be obtained a optimum thickness of insulation with comparing the correlation of a V-L (Voltage-Luminance) and V-Q hysteresis loop.

• Journal of KIISE
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• v.42 no.2
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• pp.213-219
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• 2015

Simulation is used these days to verify the hypothesis or the new technology. In particular, National Defense Modeling & Simulation (M&S) is used to predict wartime situation and conduct the military training. National Defense M&S can be divided into three parts, live simulation, virtual simulation, and constructive simulation. Live simulation is based on the real environment, which allows more realistic sumulation; however, it has decreased budget efficiency, but reduced depictions of reality. In contrast, virtual and constructive simulations which are based on the virtual environment, have increased budget efficiency, but reduced depictions of reality. Thus, if the three parts of the M&S are combined to make the L-V-C combined environment, the disadvantages of each simulation can be complemented to increases the quality of the simulation. In this paper, a method of interworking heterogeneous simulation middeware for L-V-C combined environment is proposed, and the test results of interworking between Data Distribution Service (DDS) and High Level Architecture (HLA) are shown.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.13 no.4
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• pp.10-17
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• 2010

The objectives of this study were to compare the growth of Vitex rotundifolia as affected by the difference of soil depth and mixture ratio in a shallow-extensive green roof module system, and to identify the level of soil thickness and mixture ratio as suitable growing condition to achieve the desired plant growth in green roof. Different soil thickness levels were achieved under 7cm, 15cm and 25cm of shallow-extensive green roof module systems made by woody frame of $500{\times}500{\times}300mm$. Soil mixture ratio were eight types for perlite : peatmoss : leafmold = 7 : 1 : 2 (v/v/v, $P_7P_1L_2$), perlite : peatmoss : leafmold = 6 : 2 : 2 (v/v/v, $P_6P_2L_2$), perlite : peatmoss : leafmold = 5 : 3 : 2 (v/v/v, $P_5P_3L_2$), perlite : peatmoss : leafmold = 4 : 4 : 2 (v/v/v, $P_4P_4L_2$), only sand ($S_{10}$), sand : leafmold = 7 : 3 (v/v, $S_7L_3$), sand : leafmold = 5 : 5 (v/v, $S_5L_5$) and only leafmold ($L_{10}$). The growth response of Vitex rotundifolia had fine and sustain condition in $P_6P_2L_2$, $P_5P_3L_2$ and $P_4P_4L_2$., Especially, in case of $P_6P_2L_2$, growth response appeared to be good even in soil thickness 7cm, which showed low survival rates of Vitex rotundifolia in other soil mixtures. Tree height, root diameter, photosynthesis and chlorophyll contents tended to increase with increased soil thickness.

• Journal of Food Hygiene and Safety
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• v.38 no.6
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• pp.449-456
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• 2023

In this study, we developed Rapid Enrichment Broth for Vibrio parahaemolyticus (REB-V), a broth capable enriching V. parahaemolyticus from 10⁰ CFU/mL to 10⁶ CFU/mL within 6 hours, which greatly facilitates the rapid detection of V. parahaemolyticus. Using a modified Gompertz model and response surface methodology, we optimized supplement sources to rapidly enrich V. parahaemolyticus. The addition of 0.003 g/10 mL of D-(+)-mannose, 0.002 g/10 mL of L-valine, and 0.002 g/10 mL of magnesium sulfate to 2% (w/v) NaCl BPW was the most effective combination of V. parahaemolyticus enrichment. Optimal V. parahaemolyticus culture conditions using REB-V were at pH 7.84 and 37℃. To confirm REB-V culture efficiency compared to 2% (w/v) NaCl BPW, we assessed the amount of enrichment achieved in 7 hours in each medium and extracted DNA samples from each culture every hour. Real-time PCR was performed using the extracted DNA to verify the applicability of this REB-V culture method to molecular diagnosis. V. parahaemolyticus was enriched to 5.452±0.151 Log CFU/mL in 2% (w/v) NaCl BPW in 7 hours, while in REB-V, it reached 7.831±0.323 Log CFU/mL. This confirmed that REB-V enriched V. parahaemolyticus to more than 10⁶ CFU/mL within 6 hours. The enrichment rate of REB-V was faster than that of 2% (w/v) NaCl BPW, and the amount of enrichment within the same time was greater than that of 2% (w/v) NaCl BPW, indicating that REB-V exhibits excellent enrichment efficiency.

• Journal of Plant Biology
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• v.1 no.1
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• pp.11-16
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• 1958

한국산 Genus Vespula THOMSON 으로는 다음 6종이 알려지고 있다. Vespula austpiaca PANZER 삼성말벌 V. germanica flevicets SMITH 해첨배기말벌 V. media RETZIUS 좀말벌 V. koieensis YADOSZKOWSKI 참땅벌 V. rufa L. var. schrenckii RADOSZAKOWSKI 슈렝크말벌 V. vulgaris L. var. Lewisii CAMERON 땅벌 상기종중에서 V. austriaca, V. rufa, V. vulgaris의 종간은 각지에서 채집된 기록이 있으나 나머지 것은 한국에 산한다고만 되어있다. 채집된 상기 3종은 형태초적으로는 거의 비슷하고 반문 만을 달리하니 그 반문의 변이를 조사하는 것은 중대한 의의를 가진다. 필자는 서울 근교우이동에서 밤을 이용하여 8개의 벌집속 벌을 모조리 채집하여 그 중 2 벌집의 개체만에 관하여 그 변이를 조사한 결과를 제1보로 여기에 발표한다. 한 벌집 속 개체수는 726과 661 이었고 다라서 총개체수 1337 마리를 조사한 결과 상당히 심히 문반변이가 잇음을 알었고 더우기 V. austriaca, V. rufa, V. koreensis 와 V. vulgaris 간의 반문차는 동일종내의 변이에 불과함을 알게 되었다. 따라서, V. austriaca, V. rufa, V. koreensis는 V. vulgaris 의 synonym 임을 밝히는 바이다. 본연구에 있어서 귀중한 교\ulcorner을 빌려주신 고대이과부장 조복의교수와 재료의 채집과 조사에 협력해준 고대생물학과생 김원임, 이경\ulcorner, 이병준, 이동\ulcorner \ulcorner군에게 감사를 표하는 바이다.

• The Korean Journal of Food And Nutrition
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• v.17 no.3
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• pp.286-293
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• 2004

Extract of Eleutherococcus senticosus, Lycium chinensis, Angelica acutiloba and Schizandra chinensis were investigated to determine whether its addition may inflict on growth of lactic acid bacteria, freeze dry and cell viability during the storage. In cultivation with herbal extract, all strains tested did not demonstrate a significant reduction in their cell population, particularly Lactobacillus. acidophilus, L. bulgaricus, L. paracasei. But Schizandra chinensis extract inhibited growth of several strains. Immediately after freeze-drying using the skim milk 10%(w/v), sucrose 5%(w/v) with herbal extract 2.5%(v/v), the percentage viability was about 81.7%, 63.8%, 73.2%, 78.1 % in L. acidophilus, L. bulgaricus, L. paracasei, L. casei respectively. The protective effect of herbal extract to cell damage from freeze-drying was weak in comparison with control. During accelerated storage of freeze-dried lactic acid bacteria, those survival rate decrease rapidly, reaching 8 -18% in one month. But addition of Eleutherococcus senticosus extract in freeze dry of L. acidophilus showed a positive activity in storage.

• Proceedings of the Korean Magnestics Society Conference
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• 2008.12a
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• pp.189.1-189.1
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• 2008

• Journal of Chest Surgery
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• v.17 no.2
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• pp.177-183
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• 1984

From July 1975 to March 1984, 16 patients of complex congenital cardiovascular anomalies associated with left superior vena cava were seen at Han-Yang University Hospital. The age of patients was ranged from 2 to 15 years-old. The distribution of Sex was 7 patients in male, 9 patients in female. Persistent Left Superior Vena Cava [L.S.V.C.] was classified according to the proximal connection of L.S.V.C. into 3 groups. Group I which L.S.V.C. connected to coronary venous sinus was in 9 patients, Group II which L.S.V.C. connected to Left atrium was in 5 patients, Group III which L.S.V.C. hemodynamically connected to right atrium was in 2 patients. Pathoanatomical findings of complex congenital cardiovascular anomalies associated with L.S.V.C. in 16 cases were generally show unsystematic irregularity. In group I, A.S.D. were only in 3 cases, but in highest incidence and in group III, all two cases were supracardiac type of total anomalous drainage of pulmonary veins. Post-operatively, 3 patients among 14 patients of total correction, were died immediately, 1 patient of palliative shunt operation was died after 2 and half years, and Follow-up results of other remaining patients were excellent.

• Journal of Plant Biology
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• v.29 no.1
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• pp.53-65
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• 1986

The montane forests of Ulreung Island, Korea, were investigated by the ZM school method. By comparing the montane forests of this island with those of Korean Peninsula and of Japan, a new order, F a g e t a l i a m u l t i n e r v i s, a new alliance, F a l g i o n m u l t i n e r v i s, a new association, H e p a t i c o-F a g e t u m m u l t i n e r v i s and Rhododendron brachycarpum-Pinus parviflora community were recognized. The H e p a t i c o - F a g e t u m m u l t i n e r v i s was further subdivided into four subassociations; Subass. of Sasa kurilensis, Subass. of Rumohra standishii, Subass. of Rhododendron brachycarpum and Subass. of typicum. Each community was described in terms of floristic, structural and environmental features.

• 한국유가공학회:학술대회논문집
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• 1997.05a
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• pp.41-61
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• 1997

젖산균의 유전자 연구를 촉진하기 위해 간단하고 신속한 plasmid DNA의 분리방법과 electro-poration을 이용하여 vector plasmid의 간단하고 신속한 전이방법을 얻기 위해 젖산균의 형질전환에 영향하는 요인에 대하여 연구하였으며 연구결과는 다음과 같다. 1. O'Sullivan과 Klaenhammer의 방법을 개선하여 젖산균 plasmid DNA의 분리에 좋은 결과를 얻을 수 있는 신속하고 쉬운 방법을 고안하였으며, genomic DNA 분리에 이용되는 guanidium thio-cyanate 처리방법을 plasmid의 분리에 적용할 수 있었다. 2. L. casei, L. acidophilus. L. delbruekii var. bulgaricus. L. brevis와 L. plantarum 균주에서 plasmid를 확인하였으며, 돼지 분에서 분리된 L. lactis ssp. lactis. L. fermentum과 L. plantarum에서도 plasmid를 분리 확인하였다. 3. Lactococci의 plasmid분리는 lactobacilli와는 달리 mutanolysin의 처리없이도 잘 되었으며, L. lactis ssp. lactis와 Ent. faecalis에서 plasmid를 확인하였다. 4. E. coli plasimd 분리에 이용되는 MPS membrane filter 방법으로 젖산균 plasmid pLZ12의 분리가 가능하였으나, 세포파편이 filter를 막아 사용에 어려움이 있는 것으로 확인되었다. 5. Plasmid 분리없이 electroporation을 이용한 세포 대 세포 전이법으로 간편하고 빠르게 E. coli DH5${\alpha}$에 E. coli Jm109의 plasmid pBX19, pBR322를 전이시켰다. 6. L. lactis ssp. lactis 균주에 lysozyme 처리시 30${\sim}$80%의 생존율을 보였으며, 대부분의 L. acidophilus 균주의 경우 약 70%의 생존율을 보였다. L. casei 102S의 경우는 45분간 처리 시에도 100%의 생존율을 보였다. 8. L. lactis ssp. lactis 균주에 pLZ12를 6.0kV에서 전이시킨 결과 12.5kV에서보다 형질전환 효율이 훨씬 높았으며 lysozyme 처리에 의해 형질전환 효율이 증가되었다. 9. L. acidophilus 균주에 pLZ12를 전이시 6.0kV에서는 전이가 모두 이루어졌으나, 12.5kV에서는 L. acidophilus WIESBY와 NCFM에서 전이가 이루어지지 않았으며, lysozyme 처리 후 pLZ12를 전이시켰을 때 12kV보다 6.0kV에서 형질전환 효율이 증가되었다. 10. Gene Pulser와 Progenitor II를 사용하여 pLZ12를 L. lactis ssp. lactis 균주에 전이하였을 때 Gene Pulser에 비해 Progenitor II의 형질전환 효율이 현저히 떨어졌다. L. acidophilus HY7008과 HY7001은 두 기기 모두 형질전환이 이루어졌으나, L. acidophilus WEISBY와 NCFM은 Progeni-tor II에서 전이가 일어나지 않았으며, Gene Pulser에서 전이균주를 얻어 두 electroporator간에 형질전환 효율의 차이를 보였다. 11. L. casei 102S에 pLZ12를 electroporation시 낮은 전압에서 형질전환 효율이 비교적 좋았으며, 배양 시기를 달리하여 전이시켰을 때 대수생장 말기의 세포가 형질전환 효율이 좋았다. 12. L. casei 102S세포를 각각 10% glycerol, EB, 2차 증류수 등에 녹여 electroporation을 실시하였을 때 각각 $3.8{\times}10^3$, $5.0{\times}10^2$,1.5${\times}10^2$cfu의 형질전환 효율을 보였으며, 1.0mM HEPES, TE buffer를 사용하였을 때에는 전이가 이루어지지 않았다. 13. Plasmid pLZ12의 농도를 달리하여 electroporation을 하였을 때 형질전환 효율이 농도에 비례하여 증가하였다. 14. L. casei 102S에 대수생장 말기의 세포를 채취하여 10% glycerol, 200 Ohms, 25 ${\mu}$FD, 10kV/cm로 plasmid pLZ12를 electroporation할 때 최대 형질전환 효율인 3.8${\times}$10$^{3}$cfu를 얻었으며, lysozyme 처리가 다른 젖산균과는 달리 형질전환 효율을 증가시키지 못하였다. 15. L. casei 102S 세포를 10% glycerol과 EB에 녹여 -20$^{\circ}C$에서 냉동시킨 다음 1일과 7일 후의 세포를 electroporation한 결과 냉동시 세포에 손상을 주는 것으로 인식되었다.