• 한국생산제조학회지
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• 제21권3호
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• pp.459-464
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• 2012

The point of impact, the shot group, and the flight traces depend on the combination of unique features which decide moving traces of the arrow (paradox of the archer, length of the arrow shaft, weight, angle of the feather, and spline of the arrow shaft). The more dense the impact points in the shot group and the earlier elimination of paradox of the archer, the higher assessment is given for the product. However, there is no way to objectively assess the efficiency and quality of the arrow, and there is no numeric data to be used as the basis for comparison with other products. Although capturing the images of flying arrow using a high-speed motion picture camera is possible, we are limited to observation from specific view angle only. Hence, the criteria for efficiency and quality assessment are mostly based on subjective opinions of experts or hunters, or review on consumers' remarks. In this paper, we propose a hardware composition that are based on three detection frames consisting of line lasers and photo diode arrays without the high-speed motion picture camera. Predicated on measured coordinates data, a nobel method for the archer's paradox measurement, a key parameter that determine the arrow's trajectory, and corresponding numerical analysis model is proposed.

• 한국가금학회지
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• 제39권2호
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• pp.105-112
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• 2012

Genetic resource conservation of indigenous species is important to conserve terrestrial, aquatic and avian species throughout the world. The native Korean Oge (KO) chickens are important and protected indigenous avian species in Korea. This KO breed is very popular in Korea because of its external appearances of blackish color. The characterization of morphology and growth performances of KO were performed since 1980s, however the information is still not sufficient for breed selection. In this study, we compared various growth performances including body growth, tibia length, shank length, chest width, chest grith and length of tail feather between male and female chickens of KO and widely known White Leghorn (WL) breeds at 1 week, 2 weeks, 5 weeks, 10 weeks, and 24 weeks. We observed differences on various growth performances at different aged groups between KO and WL chickens. This study may help for the selection of chicken breeds based on age, body growth and meat production.

• 한국동물위생학회지
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• 제37권3호
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• pp.213-218
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• 2014

In early April 2014, a month-old Alexandrine Paraqeet (Psittacula eupatria) that was raised in a domestic aviary located in Gyungju-si, Korea was suddenly died and submitted to Animal Disease Intervention Center, Kyungpook National University in order to diagnose the causative agent. In post-mortem examination, the bird had abnormally developed feathers on the neck and abdomen region and subcutaneous hemorrhages on the neck and cheek adjacent to the beak. At necropsy, the bird had hemorrhage on the muscle of the femoral region, ascites, multi-focal hemorrhages on the epicardium, and diffuse hemorrhages on the sub-serosa of proventriculus and gizzard, suggesting typical avian polyomavirus (APV) infection. The partial large tumor (T) antigen gene of APV was detected by PCR from tissues of the heart, lung, liver, kidney, proventriculus and feathers of the APV-suspected birds. However, other pathogenic virus-specific nucleic acid common with psittacine birds such as avian bornavirus, psittacine beak and feather disease virus and psittacid herpesvirus were not detected from the mixed tissue samples of the bird, indicating this case is due to single infection of APV. Nucleotide sequence analysis of the partially amplified large T antigen DNA was confirmed to have 99~100% homology with that of the previously reported APV strains. This case report describes the first detection of APV in Alexandrine Paraqeet in Korea.

• 패션비즈니스
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• 제10권3호
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• pp.54-68
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• 2006

Suhainmyuldo (樹下人物圖) is a type of picture which expresses a person under the tree and is known to be brought to the Korean Peninsula from the Middle Asia. The origin of this kind of expression is assumed to be from Iykshini (or Iygsha), the fairy of tree, in India and the 'Tree of Life' in Western Asia which influenced on the craft art design of Chinese art. However, Chinese art had already developed the motif of this kind in its unique way; for example, Jookrimchilhundo (竹林七賢圖: seven wise men in bamboo forest) in the Six Dynasty. There are only two items of female dress and its ornament from the 4th to 6th century Suhainmyuldo of the Goguryeo ancient tomb mural: one from the Jangchun Tomb No. 1 in which a female figure is portrayed as a part of living genre painting and the other from the Anahk Tomb No. 1 with seven female figures in a painting which is one of the earliest Suhainmyuldos, presumably from the 4th century. These two paintings must be considered in parallel with the origin of Suhainmyuldo. The mountain wizard's dress and Men's dress and its ornament in Suhainmyuldo from the 4th to the late 6th century Goguryeo ancient tomb is mostly joint adjust in which its collar is connected by a line and almost all the wizards are wearing Sang (upper garment). Most mountain wizards are wearing black feather shaped jackets and upper garments. One noticeable observation is that the mountain wizards of Mooyongchong, Tongu Ohgoibun Nos. 4 and 5 are completely different from one another in terms of ways to dress each wizard's official hats and shoes.

• 대한수의학회지
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• 제40권2호
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• pp.311-323
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• 2000

Immunosuppressive effects of reticuloendotheliosis virus (REV) infection in chickens were investigated. Primary antibody responses to Newcastle disease virus (strain B1) and sheep red blood cells were significantly low in chickens inoculated with the local isolate 89-74 of REV compared to those of uninfected chickens. In chickens infected with REV strain T or 89-74, blastogenesis of spleen cells and peripheral blood lymphocytes (PBL) to concanavalin A (Con A) was severely suppressed. When specific pathogen free (SPF) chickens were inoculated with the isolate, the suppressive effect was observed up to 7 weeks of age while, in the contact infected chickens, the suppression was absent. Similar suppressive effects were observed in chickens inoculated with REV strain T at 2, 3 and 4 weeks of age. When spleen cells or PBL from uninfected chickens were co-cultured with spleen cells or PBL from chickens infected with REV at 1 day-old or 2 week-old, the blastogenesis of the normal cells was suppressed. The suppressive effect of PBL from REV-infected chickens on normal lymphocytes was abrogated by the treatment with trypsin. However the suppressive activity of the REV-infected PBL was not influenced at removing machrophage from the cell suspension by incubation in plastic petri dishes. In addition to the immunosuppression, chickens infected with the REV isolate showed abnormal feather development (nakanuke), anemia, paralysis and retarded growth. Three out of 11 chickens inoculated with the isolate at day-old died between 6 and 9 weeks of age by bacterial infections.

• Journal of Microbiology and Biotechnology
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• 제27권2호
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• pp.271-276
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• 2017

A highly thermostable ${\beta}-(1-4)-glucanase$ (NA23_08975) gene (fig) from Fervidobacterium islandicum AW-1, a native-feather degrading thermophilic eubacterium, was cloned and expressed in Escherichia coli. The recombinant FiG (rFiG) protein showed strong activity toward ${\beta}-{\small{D}}-glucan$ from barley (367.0 IU/mg), galactomannan (174.0 IU/mg), and 4-nitrophenyl-cellobioside (66.1 IU/mg), but relatively weak activity was observed with hydroxyethyl cellulose (5.3 IU/mg), carboxymethyl cellulose (2.4 IU/mg), and xylan from oat spelt (1.4 IU/mg). rFiG exhibited optimal activity at $90^{\circ}C$ and pH 5.0. In addition, this enzyme was extremely thermostable, showing a half-life of 113 h at $85^{\circ}C$. These results indicate that rFiG could be used for hydrolysis of cellulosic and hemicellulosic biomass substrates for biofuel production.

• 한국동물위생학회지
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• 제37권1호
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• pp.79-84
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• 2014

Two Hahns Macaws (Ara nobilis nobilis), three and nine-month-old, with a three-weeks history of weight loss and anorexia were diagnosed presumptively with proventricular dilatation disease (PDD) by radiographic examination. The birds were treated with antimicrobials, analgesics, and fluid administration. However, these birds died three weeks after the first signs of PDD. At necropsy, the birds had severely dilated proventriculus, severe pectoral muscles atrophy, and blood vessels congestion on cortex of cerebrum. The partial matrix gene of avian bornavirus (ABV) was detected by RT-PCR from tissues of the brain, feather calami, and proventiculus of each PDD-suspected birds. This report describes the first detection of ABV in PDD-suspected Hahns Macaw in Korea.

• 한국조경학회지
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• 제30권3호
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• pp.46-56
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• 2002

This landscape design proposal was presented to a design competition for the Culture.Welfare.Administration Complex of Yongin-City which was held by Yongin-City in December, 2001. The site is located at 68-19 Yukbuck-dong, Yongin-City, Kyunggi-do and has an area of 236,449$m^2$. The judging criteria for landscape design set by the Yongin-City could be articulated as follows: an environment friendly design respecting the surrounding environment, a locale as a community center of Yongin-City, a resting place for the welfare of employees and visitors, and finally a place with diverse landscape elements reflecting the individual identity of each facility. This proposal chose the main design concept of this project as‘Nature meets City'. A grove of pine trees fragments the multi building complex, so that‘nature'was brought into the‘city'. A double ground system was introduced to respect the existing topography and to enhance the efficency of the land. This design proposal consists of four segments. Each segment has its own design theme. Outdoor space of this multi-purpose complex was designed with themes of nature, culture, welfare and administration. Space composition with grid and natural looking curvilinear lines was a design motive for this complex. The nature oriented planting design was introduced to respect the existing groves of Mt. Suksung. Specific species were chosen to follow its own spatial character in each space. An environmental sculpture called‘Dream Soaring'was placed in the middle of‘Citizen Plaza'. Its light and feather-looking shape symbolizes the vision of Youngin-City. At night people can watch the diverse color changes on its mirror-like surface.

• The Korean Journal of Ecology
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• 제26권3호
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• pp.91-96
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• 2003

집비둘기 Columba livia 깃털의 중금속 농도를 파악하기 위하여 서울시에 서식하는 집비둘기를 서식지 환경에 따라 공단, 상업, 공원 및 주거지역으로 나누어 각 지역에 서식하는 개체들을 채집, 중금속 농도를 측정하였다. 깃털 중 철(Fe)의 농도는 공원지역에서, 망간(Mn)은 공업지역과 공원지역에서, 구리(Cu)는 공원지역에서 다른 지역에 비해 월등히 높게 나타났으며, 각 원소별로 지역간에 유의차가 존재하였다(ANOVA, p<0.05). 또한 아연(Zn)은 도심상업지역에서, 납(Pb)은 공업지역에서, 카드뮴(Cd)은 주거지역이 다른지역에 비해 약간 높았지만 지역별로 유의적인 차이가 나타나지 않았다. 간에서의 중금속농도와 깃털에서의 중금속농도와의 상관관계는 구리(r²=0.983, p<0.01)와 카드뮴(r²=0.632, p<0.01)에서 고도의 유의차가 나타났지만, 다른 원소에서는 유의성이 나타나지 않았다.

• 한국균학회지
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• 제26권3호통권86호
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• pp.321-326
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• 1998

흰목이 2핵균사는 색택이 흰색과 노란색의 중간이며 균사의 직경은 $1.5{\sim}3.0\;{\mu}m$이고 균사의 격막이 있는 곳에 클램프 연결체가 있다. Hypoxylon sp.(공생균)의 균사는 흰색이며 깃과 같은 모양이고 길고 가는 주요균사는 깃과 같은 가지를 친 균사를 가진다. 오래된 균사는 연노랑 혹은 연갈색이며 배양배지가 점차 연갈색에서 갈색이나 진한 녹색으로 변한다. 보통 분생자는 잘 생성되지 않으나 생성될 경우 분생자는 노랑${\sim}$녹색에서 연두색이며 형태는 반타원형이며 약 $3{\sim}5\;{\mu}m$의 크기이다. 흰목이의 자실층 발아에 의해 생성되는 담자포자는 발아관과 효모상 분열자의 두가지 방법으로 생성되며 담자포자와 효모상 분열자는 둘다 1핵체이며 발아후 1차 균사를 생성한다. 1차 균사의 융합후 담자기는 클램프를 갖는 2차 균사로 생성한다. 효모상 분생자는 발아하여 두꺼운 벽을 가진 젤라틴질 균사로 자라며 재배배지에서는 노란균사의 집단으로 발달한다. 2차균사는 환경조건이 알맞으면 톱밥배지에서 자실체를 형성한다.