• Korean Journal of Veterinary Research
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• v.26 no.1
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• pp.1-9
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• 1986

This study was carried out to investigate the branch and distribution of Nervus facialis of the Korean native goat. The observation was made by dissection of embalmed cadavers of ten Korean native goats. The results were as follows; 1. N. facialis arose from the ventrolateral surface of the medulla oblongata. 2. In the facial canal, N. facialis gave off N. petrosus major, N. stapedius and Chorda tympani. 1) N. petrosus major arose from Ganglion geniculi, passed through the pterygoid canal and terminated in Ganglion pterygopalatinum. 2) Chorda tympani joined N. lingualis at the lateral surface of the internal pterygoid muscle. 3. At the exit of the stylomastoid foramen, N. facialis gave off N. caudalis auricularis, Ramus auricularis internus, Ramus stylohyoideus and Ramus digastricus. 1) N. caudalis auricularis arose by two branches in 6 cases and by a single branch in 4 cases. N. caudalis auricularis gave off branches to the caudoauricuIar muscles and the internal surface of the conchal cavity. 2) Ramus auricularis internus arose by a single branch except in 2 cases in which it arose in common with N. caudalis auricularis. It penetrated the caudolateral surface of the tragus and distributed in the skin of the scapha. 3) Ramus stylohyoideus and Ramus digastricus arose separately from N. facialis. 4. In the deep surface of the parotid gland, N. facialis divided into N. auriculopalpebralis, Ramus buccalis dorsalis and Ramus buccalis ventralis. In 6 cases, N. facialis gave off Ramus buccalis ventralis and then divided into N. auriculopalpebralis and Ramus buccalis dorsalis. In 3 cases, N. facialis trifurcated into Ramus buccalis ventralis, Ramus buccalis dorsalis and N. auriculopalpebralis. In one case, N. facialis gave off N. auriculopalpebralis and then divided into Ramus buccalis dorsalis and Ramus buccalis ventralis. 1) Ramus buccalis ventralis ran along the ventral border of the masseter muscle and distributed to the buccinator and depressor labii inferioris muscles. Ramus buccalis ventralis communicated with a branch of Ramus buccalis dorsalis and N. buccalis. In 2 cases, it also communicated with N. mylohyoideus. 2) Ramus buccalis dorsalis communicated with Ramus transverses faciei, N. buccalis, N. infraorbitalis and a branch of Ramus buccalis ventralis. Ramus buccalis dorsalis distributed to the orbicularis oris, caninus, depressor labii inferioris, levator labii superioris, buccinator, malaris, nasolabialis and zygomaticus muscles. 3) N. auriculopalpebralis gave off Rami auriculares rostrales, which supplied the zygomaticoauricularis muscle, the frontoscutularis muscle and the skin of the base of the ear. N. auriculopalpebralis then continued as Ramus zygomaticus, which innervated the frontal muscle, the lateral surface of the base of the horn, the orbicularis oculi muscle and the adjacent skin of the orbit. N. auriculopalpebralis communicated with Nn. auriculares rostrales and Ramus zygomaticotemporalis. In 7 cases, it also communicated with N. infratrochlearis.

• Proceedings of the Korean Vacuum Society Conference
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• 1999.07a
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• pp.201-201
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• 1999

소수성의 특성을 가지는^g , pp (polypropylene)의 표면을 이온 보조 반응법(IAR)으로 처리하여 친수성으로 개질하였다. 이온빔 보조 반응법은 고에너지 이온빔을 이용한 기존의 표면처리 방식과는 달리 1keV 영역의 에너지를 가진 이온빔을 조사하면서 시료 주위에 반응성 가스를 불어넣어 줌으로써 표면의 성질을 변화시키는 방법이다. 여기서 조사된 수소이온의 에너지는 0.6에서 1.0keV까지 변화시키고 시료의 주변에 불어주는 산소의 양은 0에서 8ml/min으로 변화시켰으며 이온 조사량은 5x1014에서 1x1017ions/$\textrm{cm}^2$까지 변화시켰다. 그 결과 처리하지 않은 시료의 접촉각은 93$^{\circ}$이었으며 이온조사량이 1x1017ions/$\textrm{cm}^2$이고 가속에너지가 1.0keV인 조건에서 수소 이온빔만으로 처리한 시편의 경우 접촉각은 60$^{\circ}$정도 였으나 수소이온보조 반응법으로 처리한 시편의 경우는 $10^{\circ}$이하까지 접촉각이 감소하였음을 알 수 있었다. 이는 표면처리에 따른 표면의 친수성 작용기의 형성을 예상할 수 있으며 그 존잴르 확인하기 위하여 대기중과 물속에서 각각 보관한 시료의 접촉각과 표면에너지를 계산하여보았다. 그 결과 대기중에서 방치한 시편의 경우40$^{\circ}$ 정도로 감소하였으나 증류수에 보관한 시료의 경우는 15$^{\circ}$정도의 변화를 보였다. 물과 Formamide의 접촉각의 측정으로 표면에너지를 계산한 결과 산소분위기에서 수소이온빔으로 처리된 시료는 23dyne/cm에서 64dyne/cm이상까지 변화함을 관찰하였다. 위의 결과들이 표면거칠기에 미치는 영향을 고찰하기 위해 처리되지 않은^g , pp 의 근(root mean square)값은 8.30nm이었고 1kevdpsj지에서 불어준 산소4ml/min이고 이온 조사량이 1x1017ions/$\textrm{cm}^2$인 경우 접촉각은 $10^{\circ}$를 나타냈으며 rms값은 20.8nm를 나타내었다. XPS (X-ray photoelectron spectroscopy) 분석을 통하여 1x1017ions/$\textrm{cm}^2$에서 산소기체를 4ml/min 불어넣어준 후 C-O, C=O, (C=O)-O등의 친수성 작용기가 형성되었음을 확인하였다.^g , pp 의 접착력을 알아보기 위해 유성 페인트를 전도성 고분자위에 후막 처리하였다. 스카치 테이프를 테스트를 통하여 이온 보조 반응법으로 처리된^g , pp 표면이 처리하지 않은 시편에 비하여 접착력 향상되었음을 확인하였다.

• The Korean Journal of Zoology
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• v.39 no.4
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• pp.426-436
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• 1996

In previous studies, we have shown that lysosomal add phosphatase (LAP) activity increases at the dedifferentiation stage in the regenerating larval limbs of salamander, Hynobius leechii. Monoclonal antibodies against LAP were generated to determIne the spatial and temporal distribution of the protein In the regenerates.A total of 22 monoclonal antihodies recognizIng different epftopes of the protein were obtained, of which five strongly stained the regenerating limb by imunohistochemistry. in LAP immunohistochemical examination, LAP showed distribution coincident with the state of dedifferentiation, both spatially and temporally, in the limb regenerates. When unfractioned protein of regenerating salamander limbs were separated by gel electrophoresis and immunoblotted, the antibodies recognized a single protein band of 53 kl)a, which comigrates with a monomerlc subunit of IAR Using the anti-IAP antibodIes as probe, we investigated the cross-reactivities of LAPs from other sources. The immunoreadive bands on Western blots appeared to be the same In molecular mass-53 kl)a in axoloti and Xenopus, but no protein band was detected in mouse, Drosophila, or C. elegans.These results show that the antibodies generated in this study spedfically recognize Hynoblus leeclili IAp and that IAPs may be highiy conserved among amphibians. Furthermore, the distdbution of the protein is consistent with a role for LAP in the dedifferentiation process of limb regeneration.

• Resources Recycling
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• v.6 no.2
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• pp.22-28
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• 1997

In recent yean thc problem of wastc plastics arc greatly incrcascd with ihe result uf lndushial growth. As a rcsult the amount of wastc plaslics in domestic area is appraxhnately 2,300,000 t<~nin 1996 base and contmuously increasing more than 12% cvcry ycar. Thc disposal way of these waste plastics arc dlLl malnly rely~ng on landill1 or partially incinuralion So that it hss become a senous social problem due to the second envirnmentd pollution. The tcchnologics iar prducing oil from the waste plastics have hccn dcvelopcd far along pennd and currently some of them are in a commercialiration stage Pyrolysis process in one of the major process m heating waslc plaslics bul still has some restlichons for the cammcrc~dizatian duc lo 11s emnom~cal problems assaciated with a systcmiltlc lecd collcctionidispnsJ ways. Cansldenng cnvaomcnld problems, thc inclease m the charge for waste matcds trcatmcnt and thc lmlitarion ni disposal area, it is inteicstcd that the wastc plastics treabncnt by pyrolysn. which would be the safest and the most eilic~ent process for cnnvcrting fecd wastc to rc-usablc rcsourccs. would he predomhant m ihe near h~lurc Thc shldy aims inr the development of haslc ted~nolagy for scaling up to a com~nercial sire through pyrolys~s process which is cnnduclcd under the absence of air. Furthern~orc the waste plastics can be recycled as iual gas or oil wilhout harmful effects in enviroment, The waste w e d plastics arc pyrolyzed in (he fluidized bcd rcaclor under continuous way and thc ail ylcld gives approx~marcly 47 4%.