• 프린팅코리아
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• s.3
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• pp.52-57
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• 2002

자동차가 발명되기 저에 말과 마차의 교통망이 있었던 것처럼 구텐베르크의 활자인쇄가 나타나기 전에 서양에는 필사업이 있었다는 것을 잊어서는 안된다. 인쇄기의 활자가 필사업자의 깃털 펜과 치열한 경쟁을 벌였던 것은 이미 책이 지식상품으로서 소비되는 시장이 있었기 때문이다.

• 베이커리
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• no.8 s.445
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• pp.148-151
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• 2005

머랭으로 만드는 과자는 바삭바삭 가벼운 식감이 일품이라 여름과자로 딱 제격이다. 머랭의 보송보송한 느낌을 자연스럽게 살려도 좋고 짤주머니에 넣어 앙증맞게 짜주어도 좋다. 요즘에는 탱탱한 '마시맬로'가 인기를 끌기도 한다. 머랭은 가벼운 식감만큼이나 매우 자유스러운 쓰임새의 과자다.

• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2005.04a
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• pp.171-172
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• 2005

• Journal of Science Education
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• v.34 no.2
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• pp.185-192
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• 2010

The purpose of this study was to develope the negative-emotion prediction model by hormonal changes during the scientific inquiry. For this study, biological classification task was developed that are suitable for comprehensive scientific inquiry. Forty-seven 2nd grade secondary school students (boy 18, girl 29) were participated in this study. The students are healthy for measure hormonal changes. The students performed the feathers classification task individually. Before and after the task, the strength of negative emotion was measured using adjective emotion check lists and they extracted their saliva sample for salivary hormone analysis. The results of this study, student's change of negative emotion during the feathers classification process was significant positive correlation(R=0.39, P<0.001) with student's salivary cortisol concentration. According to this results, we developed the negative emotion prediction model by salivary cortisol changes.

• Korean Journal of Poultry Science
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• v.49 no.3
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• pp.157-165
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• 2022

Chickens are a species of vertebrate with varying colors. Various colors of chickens must be classified to find color-related genes. In the past, color scoring was performed based on human visual observation. Therefore, chicken colors have not been measured with precise standards. In order to solve this problem, a computer vision approach was used in this study. Image quantization based on k-means clustering for all pixels of RGB values can objectively distinguish inherited colors that are expressed in various ways. This study was also conducted to determine whether plumage color differences exist in the reciprocal cross lines between two breeds: black Yeonsan Ogye (YO) and White Leghorn (WL). Line B is a crossbred line between YO males and WL females while Line L is a reciprocal crossbred line between WL males and YO females. One male and ten females were selected for each F₁ line, and full-sib mating was conducted to generate 883 F₂ birds. The results indicate that the distribution of light and dark colors of k-means clustering converged to 7:3. Additionally, the color of Line B was lighter than that of Line L (P<0.01). This study suggests that the genes underlying plumage colors can be identified using quantification values from the computer vision approach described in this study.

• KOREAN POULTRY JOURNAL
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• v.47 no.2
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• pp.108-111
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• 2015

닭은 주령에 따라 적정 사육온도가 다르고 사양 관리법이 달라 각 사육단계에 맞게 관리해야 한다. 특히 닭은 몸 전체가 깃털로 쌓여 있어서 체열을 발산하기 어렵고 땀샘이 발달 되어 있지 않아 체온조절이 어렵다. 온도에 따라 생산성에 큰 영향을 끼쳐 계사 온도관리에 소홀할 수 없다. 2005년에 설립된 빛컨(대표 김민규)은 차별화된 기술력으로 무선온도관리시스템을 개발하여 저비용으로 계사의 온도관리를 손쉽게 할 수 있다. 이번호에는 양계산업에 첫발을 내딘 빛컨을 소개코자 한다.

• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.83-83
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• 2017

• KOREAN POULTRY JOURNAL
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• v.45 no.7
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• pp.132-133
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• 2013

농촌진흥청(청장 이양호)은 양계 사육농가들이 여름철 혹서기에 관심을 갖고 세심하게 관리해야 할 여름철 주요사양관리 요령을 제시했다. 올 여름은 때이른 무더위가 찾아와 더욱 세심한 사양관리가 필요하다. 특히, 닭은 다른 동물과는 달리 몸 전체가 깃털로 덮여있고 땀샘이 발달되지 않아 고온에 취약하다. 닭이 지내기 적합한 온도는 $20^{\circ}C$ 전후로 $30^{\circ}C$이상으로 기온이 올라갈 경우 특별 관리가 필요하다.

• The Korean Journal of Mycology
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• v.48 no.1
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• pp.55-61
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• 2020

In this study, we isolated endophytic fungal strains from the rhizoid and the leaf of Mnium heterophyllum and Hypnum plumaeforme, respectively. The isolated strains were identified based on morphological characters and molecular analysis of the internal transcribed spacer, large subunit rDNA, β-tubulin, and RNA polymerase II subunit regions. From the results, we confirmed two endophytic fungal species, Cercophora thailandica, and Biscogniauxia petrensis, which to the best of our knowledge, have not yet been reported in Korea. We further describe the morphological characteristics and the results of the molecular analyses of these isolated fungal strains.

• Korean Journal of Plant Resources
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• v.23 no.4
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• pp.379-385
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• 2010

This study was carried out to develop cultivation techniques of Climacium japonicum in transparent pot. We analyzed effect of different soil moisture content, air exposure degree, bed soil and ground cover moss on the growth of Climacium japonicum. The best humidity condition in transparent pot culture was 60~80% and a mixture of bed soil with peatmoss : perlite as 7:3 ratio was effective to growth. Two holes(each diameter is 4 mm) in the cover were also effective to the growth and control moisture in the transparent pot. The best mixture of bed soil was moss with peatmoss : pelite(7:3) in the pot culture but price of moss is expensive, the moss treatment was not practical. Total of 10 moss species were selected as ground cover plant; Hypnum erectiusculum Sull. et Lesq., Thuidium kanedae Sak., Hypnum plumaeforme Wils., Trachycystis microphylla Lindb., Bryum argenteum Hedw., Hypnum oldhamii Jaeg., Funaria hygrometrica Hedw., Leucobryum glaucum Aongstr., Polytrichum commune Hedw. and Weissia controversa Hedw. The plant height of selected moss was smaller than that of Climacium japonicum so these moss were very effective to cover the ground.