한우 성별에 따른 등심의 육질특성 비교

최정석, 정동순, 최석현, 이상화, 김종희, 최양일 忠北大學校 農業科學硏究所 2011 農業科學硏究 Vol.27 No.4

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적응-강인 제어기법을 이용한 유압 굴삭기의 궤적 제어

최종환,김용석,김승수,양순용 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

This paper proposes a combined controller frame of the adaptive robust control(ARC) and the sliding mode control(SMC) for the trajectory tracking control of the excavator to preserve the advantages of the both methods while overcoming their drawbacks, namely, asymptotic stability of adaptive system for parametric uncertainties and guaranteed transient performance of sliding mode control for both parametric uncertainties and external disturbance. The suggested control technique is applied for the tracking of a straight-line motion of end-effector of manipulators, and through computer simulations, its trajectory tracking performances and the robustness to payload variation and uncertainties are illustrated.

OFDMA 기반 이동통신시스템을 위한 핸드오버 알고리즘

강창순,염동화,석종원 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

The wireless broadband (WiBro) system supports high quality internet data services with medium user's mobility. Towards this end, the system uses orthogonal frequency division multiple access (OFDMA) technology and the same frequency in every cell. To provide high-speed seamless services, handover functionality is needed. In this paper a handover algorithm for the WiBro system is proposed. Two kinds of OFDM channels are considered in the algorithm : diversity channel and safety channel. The handover algorithm is composed of intra-cell handover and inter cell handover using safety channels. In particular, the safety channel is used for the mobile users when the received signal quality is degraded. Performance analysis results show that the quality of service can be significantly improved by reducing the interference effect among OFDM channels.

말뚝이 매입된 연약지반의 변형거동

裵鍾淳,權正烈,鄭晳允,朴卿局 경상대학교 생산기술연구소 2000 生産技術硏究所論文集 Vol.16 No.-

When embankment is constructed on soft ground, lateral displacements and consolidation settlements develops. When load work on the soft clay ground, we can earn the following result through model test that is the lateral displacement by the piles embedded distance(L) and the piles spacing rate(s/D). 1. As increasing L and s/D, the maximum heaving height(HH Max) of the ground was also increasing, and the maximum heaving distance(HL Max) became far from the end of the load. 2. As L and s/D was increasing, the maximum of the lateral displacement(SL Max) became increasing, and The location of the maximum lateral displacement(SL Max) occurred in the -0.17~-0.28B spot regardless L and s/D. 3. HH Maxof the ground is proportional to SL Max

Azithromycin으로 치료한 임신 중 쓰쓰가무시병 1예

김광석,최진욱,서호종,김기훈,박성호,서광섭,고성만,김순혜,김호정 대한감염학회 2001 감염 Vol.33 No.5

We report a case of tsutsugamushi disease in a 26 year-old pregnant woman who was treated with azithromycin. Her gestation period was 27 weeks and she admitted with fever, rash, and eschar on the right shoulder. Currently recommended medications for the treatment of scrub typhus are doxycycline or chloramphenicol. But, these drugs are class D drugs according to the U.S. Food and Drug Administration (FDA) Fetal Risk Summary, so they couldn't be used to treat pregnant women. Recently, a few case reports suggested that azithromycin, a relatively new macrolide antibiotic, was effective and safe for the treatment of scrub typhus in pregnant women. And, there is no evidence that azithromycin causes harmful effects to the developing fetus or to children. On the basis of current in vivo test that confirms the effectiveness of azithromycin, it may be the drug of choice for the treatment of scrub typhus in pregnant women and children. (Korean J Infect Dis 33:380-382, 2001)

顎關節機能障碍 診斷을 爲한 頭部軸方向 放射線寫眞에서의 下顎顆頭의 位置分析

卞鍾秀,崔珣哲,金碩鎬 大韓口腔顎顔面 放射線學會 1991 Imaging Science in Dentistry Vol.21 No.1

저자는 顎關節機能障碍의 소견을 가진 환자 75명과 顎關節機能障碍의 病歷 및 現症이 없는 정상인 75명을 표준화된 조건하에서 頭部軸方向放射線撮影을 하여 顆頭水平角과 initial 및 final depth of cut를 측정하고 통계학적으로 분석한 결과를 다음과 같이 요약할 수 있었다. 환자군과 정상군, 患側과 非患側에 있어 顆頭水平角과 initial 및 fianl depth of cut는 통계학적으로 유의한 차가 없었으므로 頭部軸方向放射線寫眞은 임상에서 顎關節機能障碍의 유무 및 患側과 非患側의 감별에 이용하기에 부적합한 방법이라 사료된다. 본 연구의 계축치는 편차가 심하므로 환자마다 顆頭水平角을 측정하여 이각에 맞추어 顎關節斷層撮影을 해야 한다고 사료된다. The purpose of this study was to analyze the position of mandibular condyle on the submentovertex radiopgraph, thereafter to evaluate the usefulness of submentovertex radiograph in diagnosis of temporomandibular joint dysfunction, and to check the best method of tomographic techniques. Submentovertex radiographs which were taken in 75 temporomandibular joint dysfunction patients and 75 normal persons were used as the sample for this study. The obtained results were as follows: The submentovertex radiograph was a improper method in diagnosis of temporomandibular joint dysfunction and discrimination of affected side. The selective tomography was a better method than any other tomographic techniques in diagnosis of temporomandibular joint dysfunction.

乳房炎 乳汁에서 分離된 原因菌의 抗菌劑 感受性

崔民淳,金鍾冕,趙正坤,蔡孝錫,姜明大,宋熹鍾 全北大學校 附設 畜産開發硏究所 1987 畜産開發硏究報告 Vol.1 No.-

A total of 189 strains (Streptococcus agalactiae and non-Streptococcus agalactiae 110, Staphylococcus aureus 63, and E. coli 16) isolated from bovine mastitie milk samples by "The Connecticut Mastitis Control Program" in dairy herds were examined for drug susceptibility to 8 drugs and analysed the rate of multiple resistant patterns. 1. All of the isolates were resistant to antimicrobial agents such as penicillin (PC), streptomycin (SM), kanamycin(KM), carbenicillin (CA), lincomycin (LM), gentamicin (GM), and tetracycline (TC), singly or multiply. The isolates were more susceptible to CA (84.1%),PC (78.9%), and SM (78.4%) than the the other drugs such as GM (51.8%), KM (48.7%), TC (19.6%) and LM (19.0%) in order. 2. The multiple resistant isolates (96.3%) were more than those of singly resistant isolates (3.7%) and 58 different drug resistant patterns were observed. Among 7 singly resistant isolates, CP was the commonest. While among 182 multiple resistant isolates, CP-KM-LM-TC-GM, CP-LM-TC, CP-LM-TC-GM, PC-CP-SM-LM-TC-GM, CP-KM-LM-TC, and CP-LM patterns were frequently encounted. 3. The strains of streptococcus spp. were more susceptible to CA (90.1%) and SM (82.9%) than the other drugs such as KM (43.2%), GM (38.7%), LM (13.5%), CP (10.8%) and TC (10.8%). Among them CP-KM-LM-TC-CM pattern was frequently encounted. 4. The strains of Sta. aureus were more susceptible to PC (74.6%),CA (69.8%), SM (65.1%) and GM (63.5%) than the other drugs such as KM (46.0%), CP (22.2%), TC (15.9%) and LM (9.5%). Among them CP-LM-TC pattern was commonly encounted. 5. The strains of E. coli were more susceptible to CA (100%) and KM (75.0%) tnan TC (9.5%). But the other drugs such as PC, SM, GM, CP and LM were not. Among them PC-CP-SM-LM-TC-GM pattern was commonly encounted.

액체크로마토그래피/질량분석법을 이용한 랫트 혈장내의 Surfactin C의 정량법에 관한 연구

임종환,김명석,이동연,이상훈,백경진,김태원,정두순,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Surfactin isolated from Bacillus subtilis has a strong surface tension-lowering activity, together with antiviral, antitumor, fibrinolytic and hypocholesterolemic activities. LC/MS is a simple, rapid and effective technique for the determination of surfactin C in rat serum. The separation of surfactin was achieved on reverse phase column. The mobile phase consisted of 0.1% trifluoracetic acid in water (A) and acetonitrile (B). As a result of analysis of blank rat serum samples, matrix interference was not shown. The values of precision and accuracy were satisfied w the guideline. A newly developed LC/MS method for the determination of surfactin C was successfully applied in its pharmacokinetic analysis.

당뇨신발용 혁의 개발에 관한 연구

이종석,이종철,김명웅,최순복,김영길,유은일 한국공업화학회 2003 응용화학 Vol.7 No.1

The whole process of manufacturing diabatic leather for upper and lining is investigated into raw skin, pelt wet bule, crust leather and finished leather It is tried to make the more functional upper leather and lining leather in the whole leather process by the use of developed recipr. The lower chrommed wet blue for upper and lining is developed through tanning process. The air-permeability of crust leather for upper and lining is incerased through miling The hygiene of finished leather for upper and lining is increased by the of antibacterial and deodorization agents. The upper leathe and lining leather through these have the more improved physical properies of the finished leather than those through other treatments.

人蔘 Total Saponin, Protopanaxadiol 및 Protopanaxatriol의 消炎作用에 關한 硏究

조태순,이선미,정국현,이범구,이석용,박종대 성균관대학교 약학연구소 1999 成均藥硏論文集 Vol.11 No.-

Abstract-In an attempt to elucidate the anti-inflammatory action of ginseng total saponin, protopanaxadiol and protopanaxatriol, the anti-inflammatory activity of three compounds was investigated under various acute and chronic inflammatory models. The blood vessel permeability was slightly inhibited by total saponin and protopanaxatriol treatments. Granuloma formation induced by 2% carrageenan was inhibited by total saponin and protopanaxatriol. The cotton-pellet granuloma formation was significantly inhibited by intraperitoneal injection of total saponin. Total saponin and protopanaxadiol inhibited leukocyte emigration and protein exudation in CMC-induced pouch but protopanaxatriol increased leukocyte emigration. The swelling of rat hind paw induced by 1% carrageenan was significantly inhibited by total saponin, protopanaxadiol and protopanaxatriol both single and 2 weeks treatments. Total saponin, protopanaxadiol and protopanaxatriol decreased the anti-inflammatory activity in adrenalectomized rat. Our results suggest that total saponin, protopanaxadiol and protopanaxatriol have potent anti-inflammatory activity, this may be mediated in part through stimulation of adrenal glands.