치수유래 구심성 신경섬유의 삼차신경 감각핵군에서의 연접특성

배용철,이은희,최민기,홍수형,김현정,남순현,김영진 대한소아치과학회 2001 大韓小兒齒科學會誌 Vol.28 No.2

일차연접부위에서 악안면 영역에서 유래하는 유해자극의 전달 및 처리기전을 이해하고자 horseradish pe개xidase를 치수지배 구심성 신경섬유를 표식한 후 연수후각에서 미세구조 및 연절 양상을 분석하여 다음과 같은 결과를 얻었다. 표식종말은 소수의 큰 치밀소포가 관찰되는 종말 (S형) 및 다수의 치밀소포를 함유하는 종말 (LDCV형)등 2종류로 분류할 수 있었다. S형 및 LDCV형 표식종말의 연접양식은 유사하였으며, 다수의 표식종말이 1개 혹은 2개의 neurofile과 연접을 이루어 대단히 단순한 연접양상을 보였다. 표식종말은 가지돌기체 보다는 다수의 가지돌기가시와 연접을 이루는 빈도가 높았다. 표식종말이 세포체 및 이에 인접한 근심부 가지돌기와 연접하는 경우는 드물었으며, 소수의 표식종말에서 p-ending과 연접하는 경우를 보였다. 표식종말의 체적, 표면적, 사립체의 체적, neurofile과 접하는 면적, 활성부위의 면적, 단위표식종말당 연접소포의 수 및 연접소포의 밀도등은 넓은 범위의 계측치를 나타내었으며, 이는 5명 및 LDCV형 표식종말 사이에 유의한 차이가 없었다. 이상의 결과로 미루어보아 연수후각에서 치수유래 구심성 신경섬유 종말의 연접양식은 고유의 특징을 보이며 이는 신경회로의 기능과 밀접한 상관관계를 가지는 것으로 판단되었다. Little is known about processing mechanism of pain sensation of the oral cavity at the 1st synapse of trigeminal sensory nuclei. Serial ultrathin sections of tooth pulp afferent terminals, identified by the transganglionic transport of 1% wheatgerm agglutinin conjugated horseradish peroxidase, were investigated wih electron microscope. Quantitative ultrastructural analysis was performed on digitizing tablet connected to Macintoshi personal computer (software: NIH Image 1.60, NIH, Bethesda, MD). Labeled boutons could be classified into two types by the shapes of containing vesicles : S bouton which contained mainly spherical vesicles (Dia. 45-55 nm) and few large dense cored vesicles (Dia. 80-120nm), and LDCV bouton, which contained spherical vesicles as well as large number of large dense coredd vesicles. Most of the parameters on the ultrastruotural characteristic and synaptic organization of labeled boutons were similar between S and LDCV boutons, except shapes of containing vesicles. Majority of the labeled boutons showed simple synaptic arrangement. The labeled bouton were frequency presynaptic to dendritic spine, and to a lesser extent, dendritic shaft. They rarely synapsed with soma and adjacent proximal dendrite. A small proportion of labeled boutons made synaptic contacts with presynaptic pleomorphic vesicless containing endings and synaptic triad. Morphometric parameters of labeled boutons including volume and surface area, total apposed area, mitochondrial volume, active zone area, vesicle number and density showed wide variation and theme were not significantly different between S and LDCV boutons. The present study revealed characteristic features on ultrastructure and synaptic connection of pulpal afferents which may involved in transmission of oral pain sensation.

쌀과 전분을 이용한 증류식 소주의 급수 변화에 따른 수율 및 향미 연구

배상면,정수연,정익수,고현주,김태영 동아시아식생활학회 2003 동아시아식생활학회지 Vol.13 No.5

Various volume of water for the optimal brewing condition of the Korean distilled liquor produced by liquefaction of rice and corn starch was investigated Pilot brewings were carried out by the liquefaction of 5㎏ of rice and 10㎏ of corn starch with 150%, 200% and 250% of water regarding the amount of rice and corn starch. The pH, alcohol production and total acidity were normal during the fermentation process. The yield was proportional to the amount of water added and the highest yield was obtained by 250% of water addition without loss of quality. All the test results were not significantly different by the one-way ANOVA and Duncan's multiple range test at p<0.05 and the flavor profiles were also not different according to the amount of water added. As a result, 250% of water addition was the most economical and optimal brewing condition in this study.

국내에서 분리된 Esherichia Coli 와 Klebsiella pneumoniae의 CTX-M형 Extended-Spectrum β-Lactamase 생성 현황

배일권,우건조,정석훈,박광옥,조병규,김둘만,권수봉,김현주,강현경 대한임상미샐물학회 2004 Annals of clinical microbiology Vol.7 No.1

인터넷을 이용한 프로그래밍 언어 실습환경의 구축

배성훈,노미라,김수근,이수현 國立 昌原大學校 精報通信硏究所 1999 精報通信論文集 Vol.3 No.-

There exist many programming languages in various programming paradigms. To practice a programming language, we need a language processor such as compiler or interpreter. In this paper, we proposed an exercising environment of programming languages using Internet and WWW. On the environment, the user just type programs and return the result from the server. The server has responsibility of program processing and running.

이동 애드 혹 네트워크에서의 환경적응형 QoS AODV 라우팅 프로토콜에 관한 연구

裵振勝,宋東勳,吳世德,鄭燦赫,金玄郁,李光培,文泰洙,郭承郁,河載承 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-

In this paper, we propose a bidirectional mobile Ad Hoc routing protocol based on AODV(ad-hoc on-demand distance vector routing) with QoS(quality of service) support. At presence, wireless mobile communication focuses on how to efficiently support mobility of users more than QoS guarantee. However, in order to satisfy requirement of various applications which have been or will be served, QoS guarantee between end points is a very important issue. The existing AODV routing protocol is implemented to use only BE (Best Effort) service. However, actual wireless mobile environment requires to reduce a waste of communication resources and meet with the real-time change of data paths by setting up routes with QoS support, considering available communication resources at each node in advance. Therefore, in this thesis, we propose an adaptive QoS support method using hello message in order to rapidly meet with the change of available communication resources and to smoothly perform route maintenance. For performance evaluation, we analyzed the average data reception rate. At that time, we used evaluation parameters such as node's mobility-stop time, hello message period, and packet priority, considering the node's mobility and the number of best effort/QoS data flows. As results, we found that with our proposed method the average data reception rate was increased 16.293%, 15.914%, 17.238% for 300 mobility-stop second case and 4.809%, 4.264%, 2.956% for 300 mobility-stop second case.

저작근 공간에서 재발된 치성각화낭

임수연,허경회,이원진,최현배,최순철 대한구강악안면방사선학회 2008 Imaging Science in Dentistry Vol.38 No.2

The odontogenic keratocyst (OKC) is a developmental odontogenic cyst typically occurring in the jaws. Since the first description of OKC was published in 1956, the lesion has been of particular interest because of its specific histopathologic features, high recurrence rate, and aggressive behavior. Recurrences most commonly arise within bone at the site of the original cyst. However, as lining cells may find their way into surrounding tissues either from implantation during surgery or from cortical perforation recurrences may arise at a distance from the original cyst. Here, we report a rare case of recurrent OKC which was first developed in mandible and recurred within the masticatory space.

플라즈마 질화처리된 Ti-6A1-4V 합금의 고온 산화 거동에 관한 연구

김광배,배현근,이종수,김영인 한국 항공대학교 항공산업기술연구소 1998 航空宇宙産業技術硏究所 硏究誌 Vol.8 No.-

Ti-6Al-4V 합금에 d. c. 플라스마 질화처리를 실시하고 600℃, 650℃, 700℃의 온도에서 200시간 등온 산화 시험을 실시하여 플라스마 질화처리를 실시하지 않은 Ti-6Al-4V 합금과의 고온 산화 거동을 비교 연구 하였다. 산화 거동은 산화후 시편의 중량 변화량을 측정하여 분석하였으며, 형성층의 미세조직을 관찰 및 상분석을 위하여 주사 전자 현미경 및 XRD를 이용하였다. Ti-6Al-4V합금은 산화 시험 온도 및 산화 시간 증가에 따라 산화 시험후 무게가 증가함을 보였다. 플라스마 질화처리된 Ti-6Al-4V함급의 경우에도 산화 온도 및 산화 시간 증가에 따라 산화 시험후 무게가 증가함을 보였다. 플라스마 질화에 의해 합금표면에 TiN 및 Ti2N의 질화층을 형성시켰으나 산화 시험 온도 범위에서 Ti02층의 형성을 근본적으로 억제할 수는 없었다. 그러나 플라스마 질화처리된 시편의 경우, 플라스마 질화처리된 시편에 비해서 산화 후 무게 증가량이 현저하게 감소하였다. 이는 질화층위에 산화층이 형성되기는 하지만 질화층이 산소의 내부 확산을 저지하는 장벽으로 작용하여 형성 산화층의 성장이 억제된 것에 기인하는 것으로 판단되었다. Plasma nitriding was performed at Ti-6Al-4V alloy. Isothermal oxidation test was carried out at 600℃, 650℃, 700℃ for 200 hours. Oxidation behavior was studied by measuring weight change of specimen after oxidation test. Microstructure of nitrided and oxidized layer was characterized by SEM, XRD, EPMA analysis. Weight gain rate transition of Ti-6Al-4V alloy is parabolic to linear plasma nitrided layer of Ti-6Al-4V was dissociated proportional to oxidation temperature and time. TiN and Ti₂N layer formed by plasma nitriding didn't supress TiO₂formation on the nitride surface. In the case of plasma nitrided Ti-6Al-4V alloy, weight gain rate was sustained at initial oxidation period but decomposed at high temp. Nitrded layer was thermally unstable.

積算溫度에 의한 고유동콘크리트의 壓縮强度 豫測

길배수,남재현 대전대학교 산업기술연구소 1998 산업기술연구소 論文集 Vol.9 No.2

The aim of this study is to compare the development of compressive strength of high-flowing concrete with maturity and to investigate the applicability of strength prediction models of concrete. An experiment was attempted on the high-flowing concrete mixes using ordinary portland cement, ordinary portland cement replaced by fly-ash 30% by cement weight, high belite cement and blast furnace slag cement, the water-binder ratios of mixes being 0.35 and the curing temperatures being 5, 10, 20, 30℃. Test results of mixes are statistically analyzed to infer the correlation coefficient between the maturity and the compressive strength of high-flowing concrete.

RT-LAMP를 이용한 콩황화일반모자이크바이러스의 진단

배대현, 이영훈, 김봉섭, 윤영남, 강범규, 최만수, 구성철, 김현태, 윤홍태, 이수헌, 백인열 忠北大學校 農業科學硏究所 2014 農業科學硏究 Vol.30 No.2

Soybean yellow common mosaic virus (SYCMV) has been recently reported, it has been occurred a lot with Soybean mosaic virus (SMV) and Soybean yellow mottle mosaic virus (SYMMV) in soybean field. SYCMV belongs to genus of Sobemovirus and induced viral symptoms with yellowing, mottle and mosaic. A reverse transcription loop-mediated isothermal amplification (RT-LAMP) method allowed one-step detection of gene amplification by simple procedure and needed only a simple incubator for isothermal template. This RT-LAMP method allowed direct detection of RNA from virus-infected plants without thermal cycling and gel electrophoresis. In this study, we designed RT-LAMP primers named SYCML-F3/B3/FIP/BIP from coat protein gene sequence of SYCMV. After the reaction of RTLAMP, products were identified by electrophoresis and with the detective fluorescent dye, SYBR Green I. under daylight and UV light. Optimal reaction condition was at 63 for 60min and the primers of RTLAMP showed the specificity for only SYCMV tested in this study.

DSR을 기반으로 라우팅 테이블을 적용한 개선된 Ad hoc라우팅에 관한 연구

김승수,유충렬,이광배,김현욱 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

In this paper, an improved source routing protocol is designed for mobile ad hoc network with unidirectional link. In the Mobile ad hoc network, nodes communicates with each other by usingmulti-hop method without any base station. In order for a source mobile node to send its data to a destination node through other intermediate nodes, mobile ad hoc routing protocol is required. DSR and AODV are the representative routing protocols for Mobile ad hoc network. However, unfortunately, current DSR and AODV routing protocol versions support mobile ad hoc network only with bidirectional links. We proposed and simulated a source routing protocol supporting mobile ad hoc network with unidirectional links which was based on DSR and AODV routing protocol. The result of simulation show average route setting time of 0.004~0.007 second and average date receiving rate of 97~97%.