• 한국압력기기공학회 논문집
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• 제16권2호
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• pp.25-34
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• 2020

As leakage in nuclear power plants could cause a variety of problems, it is very critical to monitor leakage from the safety point of view. Accordingly, a new type of leak detection system is currently being developed and flow characteristics of the sampling and transportation system are investigated by using numerical analysis as a part of the development process in this study. The results showed that the steam mass fraction varied according to the effect of the gap between the insulation and piping component, transportation velocity, and material properties of porous media during the sampling and transportation process. The results of this study should be useful for understanding flow characteristics of the sampling and transportation system and its design and application.

• International Journal of Industrial Entomology and Biomaterials
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• 제5권2호
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• pp.183-188
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• 2002

Anti-fungal potential of 5 plant extracts viz., Eucalyptus citriodora, Allium sativum, Cassia sophera, Chromolaena odorata and Datura metel on the growth of mulberry brown leaf spot pathogen Myrothecium roridum were examined. Except fur the aqueous extract of Allium bulb, ethanolic leaf extract of all other plants more efficiently reduced the colony growth of the fungus on potato-dextrose-agar, Of which, Allium and Eucalyptus extracts were more effective. Initiation of radial growth of M. roridum on solid media was deferred maximum 6 days by ethanolic Eucalyptus extract and 4 days by aqueous Allium extract at $0.4 mg.ml^{-1}$. In the liquid media amended with Eucalyptus extract ($0.4 mg.ml^{-1}$) complete inhibition of sporulation was noticed upto 8 days, and initial inhibition of mycelial bio-mass generation was considerably diminished with time and reduction was 1.3 fold 14 days after application. While, complete inhibition of mycelial growth for 6-14 days was recorded with $\geq$0.1 mg.ml$^{-1}$ commercial eucalyptus oil. However, rejuvenation of growth appeared when fungus was re-inoculated in fresh media. Post-inoculate application of different doses Of Eucalyptus and Allium extracts significantly (p < 0.05) reduced the disease severity in pot-ted mulberry. However, persistence of the effect up to 28 days was apparent at $\geq$ 1.0 mg.ml$^{-1}$ and effectively was on par with carbendazim (1 mg.ml$^{-1}$ ). Almost equal control ability of 1.0 mg.ml$^{-1}$ Eucalyptus extracts can be achieved by ca. 10 times lowered dose of commercial eucalyptus oil. It seems, the toxic principle of E. citrodora to M. roridum is fungistatic in nature and may have essential oil based origin.

• 식물조직배양학회지
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• 제26권4호
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• pp.271-274
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• 1999

아배양을 통한 물박달나무 성숙목의 기내증식은 DKW 배지에서 양호하였다. 이 배지는 다른 두 배지보다 줄기증식 및 줄기생장이 양호하여 물박달나무의 적정 배지로 생각되었다. DKW 배지에서 액아배양과 정아배양에는 큰 차이는 없었으나 증식에는 액아배양이, 생장에는 정아배양이 다소 양호하였다. 한편 1/2 MS 배지에서는 절편기부에 callus가 직경 1.0cm이상 지나치게 형성되어 줄기신장을 억제하였고, WPM에서는 줄기형태는 정상이나 생장이 저조하여 물박달나무의 아배양 배지로는 부적당하였다. 발근은 NAA 처리가 IBA 보다 효과적이었다. l/2 DKW 배지에 1.0 mg/L NAA 처리로 80%의 기내발근 되었으며 유도된 뿌리수도 많았다 얻어진 줄기는 직접 기외삽목도 가능하였는데, 이 같은 결과는 물박달나무 성숙목의 효율적인 기내번식이 가능함을 시사한다.

• 대한한방소아과학회지
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• 제13권1호
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• pp.191-204
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• 1999

Background: Nasal polyps are benign mass of nasal mucose, chronic sinusitis are swelling of nasal mucose, so nasal polyps and chronic sinusitis take a place at the same time. Nasal polyps are located lateral wall of nose, middle meatus, between middle nasal concha and inferior nasal concha. Objective: To demonstrate the effect of herbal medicine therapy in the chronic sinusitis and nasal polyps before and after treatment using computed tomography (CT). To compared before and after treatment of otitis media using earscope. Materials and methods: Five patients (4 mail and 1 femail) treated in our hospital between August 1998 and July 1999 were studied. Ages ranged from 9 to 23 years (mean age:13 years). All patients had a underlying family history, and past history(allergy or sinusitis of parents or brothers). Illness period was from 1 to 36 months (mean period:10.5 month). To ascertain the efficacy of treatment, CT were checked out. In the CT, three images were obtained 2cm interval on the coronal and axial plan. We classified treatment period into the type of allergic disease. Gamihyunggyeyungyo-tang was administered mainly. Gamigwaghyangjeungki-san, Gamizwakwi-eum and Gamihyangso-san were administered for through oral route additional symptoms. Results: Treatment period was from 126 to 157 days (mean period:140.7 days). To 3 patients with chronic sinusitis and nasal polyp, treatment period was 140.7 days, to 2 patients with otitis media and chronic sinusitis and nasal polyp, treatment period was 141.5 days. So they had no significance. Not nasal polyp from middle meatus, but also polypoid mucosal change of maxillary sinus is polyps Conclusion: We know that herbal medicine therapy is the effective treatment of pediatric chronic sinusitis and otitis media using earscope and CT. Herbal medicine therapy was effective in increasing immunity, inhibiting allergic reaction and inflammation of respiratory system. we practice ECP(eosinophil cataionic protein) and MAST examination, objectify herbal medicine therapy.

• 문화기술의 융합
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• 제7권3호
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• pp.89-94
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• 2021

최근 우리나라는 정보통신기술의 발달 및 스마트폰 보급의 일반화로 인해 전통적인 매스미디어(신문, 라디오, 텔레비전)때와 달리 콘텐츠를 생산하고 소비하는 사람간의 경계가 사라지고 있으며, 개방형 서비스 플랫폼을 통해 개인마다 문제의식은 동일하지만 서비스유형이 다원화되면서 문제해결방법 또한 다양해지고 있다. 이처럼 뉴미디어 플랫폼 산업의 성장을 통한 부가가치 창출은 우리인간의 삶을 풍요롭게 만들어 줄 것으로 기대되고 있는 가운데, 이로인해 발생되는 사회적 부작용도 만만치 않을 것으로 예상되고 있다. 대표적인 예로 최근 정보격차로 인한 사회 계층간의 소통문제는 또 세대 간의 갈등으로 까지 이어지고 있으며, 이 같은 문제가 지속될 경우 국가·사회적 손실을 불러일으킬 수 있다. 따라서 본 논문에서는 정보격차 해결을 위한 정책적 노력 및 시너지 효과 극대화를 위한 멀티미디어 리터러시 교육 법제화 필요성을 심리적 모형을 통해 분석해보았다.

• Journal of the Korean Wood Science and Technology
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• 제26권1호
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• pp.19-28
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• 1998

For cultivation on sawdust-bed of oak-mushroom until present time, inoculation of spawn on sawdust bed has been performed by sawdust spawn. But, liquid spawn may have advantages for rapid mass production of spawn, and now, sawdust-cultivation by liquid spawn inoculation should be applied instead of sawdust spawn. Therefore, investigations were performed to evaluate the effect of sawdust-cultivation by liquid spawn inoculation. The results were as follows: 1. When 11 kinds of liquid media were applied, the oak-mushroom culture medium was the most excellent in growth. Most suitable temperature at PDA was $25^{\circ}C$, and $22.5\sim27.5^{\circ}C$ in range were optimal for liquid culture. In liquid culture, amount of mycelial growth increases rapidly up to 40 days of cultivation. Incubation at fermentor brought yield of 106mg dry mycelia per 40ml media after 17 days. 2. In 1l-spawn bottle, growth of mycelium by inoculation of 20ml-liquid spawns were faster than 6g-sawdust spawn in spread of mycelia. On 2kg-bag culture, inoculations of 10ml-, 20ml- and 30ml-liquid spawns were all slower than 20g-sawdust spawn in mycelial spread. So, amount increasement in ampunt of liquid spawn should be discussed. Yields of mushrooms until third sproutings of 2kg-bag culture were 580g in 30ml-liquid spawn inoculation, but 510g, 486g and 470g from 20g-sawdust spawn, 20ml-liquid spawn and 10ml-liquid spawn, respectively. Thus, 30ml-liquid spawn inoculation was highest in yield.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 춘계학술대회
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• pp.347-350
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• 2010

뉴 미디어 시대의 도래로 우리는 움직이는 영상 이미지의 세계에 살고 있다고 해도 과언이 아니다. 매체의 발달과 함께 일상에서는 이미지와 함께 순간을 지나며 느끼며 그것을 일부처럼 공존하며 소통하고 있다. 이러한 시대에 논리적이고 현실적인 사고보다 감각적이고 형상적인 이미지가 더 많은 것을 전달하고 설명하기도 한다. 움직이는 이미지를 보는 행위는 언어적이고 개념적인 의미의 전달 이전에 색채와 화면을 구성하고 있는 조형적인 요소와 그것들이 만들어내는 변화가 먼저 인식된다. 특히 서사의 구조를 가지는 영화영상 애니메이션에서는 그 영역이 더욱 크게 작용하며 이러한 장면의 이미지를 연결시키는 트랜지션의 기법 역시 본연의 단순한 기능에서 의미소통의 기능으로 확대되고 있다. 이러한 트랜지션 효과는 단순한 장면전환의 전통적 기법에서 시각적 유희성을 제공하고 서사의 흐름에 도움을 주는 내러티브 기능으로 수행되는 관점에서 시각적 표현의 연구는 지속되어야 한다.

• 대한지하수환경학회지
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• 제2권1호
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• pp.22-29
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• 1995

유동 세균 입자는 지체계수를 감소시키므로써 지하수에서 소수성 오염물의 이동을 촉진시킨다. 그 크기와 표면의 적당한 물리화학적 조건으로 인하여 세균은 효율적인 오염물의 운반자가 될 수 있다. 이러한 운반자가 있을 때, 그 계는 액상, 입상, 그리고 고상의 3 상으로 해석되어야한다. 오염물은 각 상에 모두, 혹은 그 중의 일부에 존재할 수 도 있다. 본 연구에서는 세균이 있는 경우, 생화학적으로 분해 가능한 유기성 오염물의 다공매질에서의 거동을 물질수지에 기초하여 수학적 모델로 묘사한다. 세균의 액상과 고상사이의 물질 전이 및 오염물의 액상과 입상사이의 물질 전이는 동역학적 관계식으로 나타냈다. 모델 결과를 일반화하기 위하여 무차원화를 수행했고, 그 해를 구하여 세균에 의한 오염물의 가속이송 효과를 알 수 있었다. 모델 결과는 문헌상의 실험결과와 비교되었다. 모델 결과로부터 오염물은 그 계의 Damkohler I 수가 10 이상일 경우 국지 평형 가정을 할 수 있었으며, 세균의 성장율과 주입 농도 등이 오염물의 청소에 아주 중요한 요소임을 알 수 있었다.

• 한국자원식물학회지
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• 제6권2호
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• pp.171-179
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• 1993

This study was conducted to investigate the effect of growth regulators and medium composition on the growth of each stage in apical meristem culture for mass propagation of Zanthoxylum piperitum var. inerme Makino. The source material, shoot tip segments were taken from three-years old graft trees. Apical meristems were cultured in vitro on basal MS, GD, WS, half strength MS(1/2MS) and half strength GD(1/2GD) media supplemented with various concentrations for growth regulators(BA, IBA) and inorganic nutrients. The results summarized are as follows: 1. In culture establishment stage, ratio of culture establishment was 96.7% and the best resuit was obtained using MS medium supplemented with 1.0mg/l BA and 0.2mg/l IBA. 2. In shoot multitication stage, both shoot multiplication and growth were achieved in average 5.6cm. These results were obtained on in MS medium supplemented with 1.0mg/l BA and 0.2mg/l IBA. 3. In roothing stage, phloroglucinol(PG) acted as IBA synergist in root initiation. The most faverable combinations for root development was half-strength MS medium supplemented with 162mg/l PG and 0.2mg/l IBA, and ratio of rooting was 58.0%. 4. In Vitro formed plantlets were transplanted to paper pots in greenhouse with 85% of relative humidity. 96% of survival rate was obtained from artificial soil mix having same volume of sand, vermiculite, peat, and soil.

• Asian-Australasian Journal of Animal Sciences
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• 제13권5호
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• pp.686-693
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• 2000

Biomass yield, nutritive value and nutrient utilization efficiency of different genera of duckweed (DW, Lemnaceae) under the same nutritional and management conditions were studied. Three genera of DW namely: Lemna perpusilla, Spirodela polyrhiza and Woljfia arrhiza, were cultivated in 18 plastic sinks each of $59{\times}54{\times}35cm^3$ size. Each sink contained approximately 80 L of water and was charged once with 6.648 kg of anaerobically fermented cow dung effluent. The seed rate for Spirodela, Lemna and Wolffia were 600, 400 and $600g/m^2$ respectively. Duckweed were harvested at 48 hours intervals. Media total N concentration for Lemna and Wolffia gradually increased with time. Growth of duckweed was measured by subtracting the inoculum from the total biomass production. Growth of Spirodela ceased within 4 days but Lemna and Wolffia continue to grow up to 34 days. Bio-mass yield was significantly (p<0.05) higher in Wolffia (906 kg/ha/d) than Lemna (631 kg/ha/d). Dry matter (DM) yield was very similar in Lemna (14.80 kg/ha/d) and Wolffia (14.57 kg/ha/d). The N content was non-significant higher in Lemna (5.45%) than Wolffia (5.00%) and Spirodela (4.6%). The crude protein (CP, $N{\times}6.25$) yield was non-significantly higher in Lemna (4.83 kg/ha/d) than Wolffia (4.32 kg/ha/d). The acid detergent fibre (ADF) content was the highest in Wolffia (28.59%), followed by Spirodela (19.47%) and Lemna (12.39%). Utilization efficiency of CP was 273 and 314% respectively for Wolffia and Lemna. However, similar efficiency values for Spirodela was only 1.5%. Considering the bio-mass yield, nutritive value and nutrient utilization efficiency, production performance of DW were in the order of Lemna>Wolffia>Spirodela under the present experimental conditions.