요골동맥을 이용한 관동맥 조영술의 유용성

윤정한,이승환,이한요,김장영,김일회,최윤종,이형준,이명옥,김승년,황성오,홍인수,최경훈 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.10

Lidocaine의 산성도가 경막외 마취에 미치는 영향

이원형,신효철,신용섭 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.1

The affective factors on regional anesthesia are lipophilic-hydrophilic balance of local anesthetics, protein binding, hydrogen concentration, structure of intermediate chain, and etc. Local anesthetics in solution exit in a chemical equilibrium between the basic uncharged form(B) and the charged cationic form(BH^+) by Henderson-Hasselbalch equation(PH_a=PK+log[B]/(BH^+)). The increasement of uncharged form brig about rapid onset, good quality, and long duration of anesthesia. Eight patients in group Ⅰ were given 2% lidocaine 21.7ml with 1: 200,000 epinephrine(pH 5.1), and eight patients in group Ⅱ were given 2% lidocaine 20ml with 1: 200,000 epinephrine added NaHCO_3 1.7ml(pH 7.2) to determine the epidural analgesic effect of the pH-adjusted solution. The results are summerized as follow 1. The onsets of analgesia and surgical anesthesia were significantly rapid in group Ⅱ. 2. The levels of analgesia were raised more rapidly in group.

출생 시 발생한 특발성 치은섬유종증

이효설,최형준,최병재,손홍규,이제호 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.4

치은섬유종증(Gingival fibromaotsis)은 치은조직의 섬유성 증식을 나타내는 드문 구강질환이다. 원인은 명확히 규명되지 않았으나 상염색체 우성 또는 열성의 유전성이거나 특발성일수 있다. 주로 영구치 맹출 시기에 나타나기 시작하나, 드물게 유치열기나 출생시부터 이환되는 경우도 있다. 치은은 서서히 증식하여 치아의 해부학적 치관부위를 덮거나 구개 변이를 일으켜 혀 운동장애를 야기하거나 입술 폐쇄를 방해하기도 한다. 이 증례의 환아는 14개월 된 여아로 출생 시부터 계속딘 치은증식을 주소로 내원하였다. 특별한 가족력이나 의학적 병력은 없었고, 임상 유전검사 결과 알려진 어떤 증후군으로 진단되지 않았으나, 신체발달이 지연되어 있었다. 펀치 생검을 하였으며, 조직검사명은 치은섬유유종증이었다. 가족력이 없어 특발성 치은섬유종증으로 진단하였다. 환아의 연령 및 전신 상태를 고려해 치은 절제술 등의 외과적 치료는 연기하기로 하였다. Gingival fibromatosis is a rare condition characterized by varying degrees of gingival hyperplasia. Gingival fibromatosis usually occurs as an isolated disorder or can be associated with a variety of other syndromes. It usually appears at the time of eruption of permanent dentition but, can develop at the time of eruption of the primary dentition and rarely at birth. It may deform palatal contour and subsequently restrict the tongue movement, resulting in interference during speech and mastication. In addition, it incapacitates maintenance of normal lip closure. A 14-month-old girl visited the department of pediatric dentistry, Yonsei University Dental Hospital, for the congenital gingival overgrowth. There was no one in the family, who showed similar pattern of gingival growth. The intraoral clinical examination revealed generalized severe enlargement throughout the maxillary and the mandibular arches. Enlarged gingival tissue was pink and had firm consistency. She was referred for chromosomal analysis, which confirmed absence of any known syndrome. Under local anesthesia, "Punch-biopsy" was performed on the labial area, and the specimen was histologically diagnosed as gingival fibromatosis. For she did not have any medical problem nor familiar history, she was diagnosed as having idiopathic gingival fibromatosis. Regarding her age and behavior, close follow-up was decided.

枸杞 Lycium chinense Miller의 果實이 實驗的 糖尿에 미치는 影響

李珩九,姜孝信,鄭址昌 中央醫學社 1975 中央醫學 Vol.28 No.6

The influence of fruit of Lycium chinense Miller on the blood sugar levels and serum transaminase (SGP-T, SGO-T) activities from alloxan-diabetic rabbits were observed. The Lycii Fructus were extracted with methanol, and the extracted sample was orally administrated to normal and alloxan diabetic rabbits. As for the blood sugar levels and serum transaminase activities of normal rabbits no significant variation were detected by administration of the extracted sample. The blood sugar levels and serum transaminase activity of normal rabbits were significantly increased by administration of the alloxan. The increased blood sugar levels of 'the alloxan-diabetic rabbits were gradually decreased by administration of the extracted samples, and were returned to the control levels after 12 day. The increased transaminase activities in serum of the alloxan-diabetic rabbits were significantly decreased after 96 hours. According to the above results, it would be concluded that the extract of Lycii Fructus influences for the recovery of the increased amount of blood sugar levels and serum transaminase activities by alloxan.

치과주조용 Ag-Pd-Zn-Sn-In 합금의 시효경화 특성

이재호,김명진,이희경,김형일,설효정 大韓齒科器材學會 2004 대한치과재료학회지 Vol.31 No.1

Cu가 첨가되어 있지 않고, 대신에 상대적으로 많은 양의 Zn 그리고 소량의 Sn과 In이 첨가된 치과주조용 Ag-Pd-Zn-Sn-In 합금의 시효경화 특성을 경도 시험, X선회절 실험, 주사전자현미경 관찰, 전자탐침 미소분석법으로 조사하여, 다음과 같은 결과를 얻었다. 1. 950℃에서 용체화처리된 시편을 500℃와 550℃에서 등온시효처리하면, 시효 초기에 경도가 완만히 상승하여 최고 경도에 도달하였고 최고 경도를 일정 기간 유지하고 나서 서서히 하강하였다. 2. 용체화처리된 시편은 Pd 원자가 고용된 Ag-rich α1상, Pd3Sn인 α2상, Pd2Zn인 α3상의 3상 공존이었고, 등온시효처리함에 따라 Ag-rich α1상에서 Pd-rich 상으로 추정되는 β상이 석출하였다. 3. 시효 초기의 경화는 Ag-rich 기지에서 Pd-rich 상의 석출로 인한 격자변형에 기인하는 것으로 추정된다. 4. 시효처리 시간을 연장함에 따른 과시효 연화는 입계에 Ag-rich α1상과 Pd-rich β상으로 된 층상조직의 석출과 조대화에 기인하였다. 5. Pd3Sn인 α2상과 Pd2Zn인 α3상은 시효경화에 기여하지 않았다. Age-hardening characteristics of a dental casting Ag-Pd-Zn-Sn-In alloy without copper (52.0 wt% Ag - 39.9 wt% Pd - 4.0 wt% Zn - 2.0 wt% Sn - 2.0 wt% In - 0.1 wt% Ir) was investigated by means of hardness test, X-ray diffraction study, scanning electron microscopic observations and electron probe microanalysis. The specimen solution-treated at 950℃ was three phases of the Ag-rich α1 phase containing Pd element, the α2 phase based on Pd3Sn and the α3 phase based on Pd2Zn, and the Pd-rich β phase was precipitated from the Ag-rich α1 phase by the isothermal ageing,. The initial hardening seemed to be attributed to coherency strains which were formed in the Ag-rich matrix by the precipitation of Pd-rich phase. Overageing with softening was due to the formation and coarsening of the lamella precipitates at grain boundaries, which were composed of the Ag-rich α1 and Pd-rich β phases. The α2 phase based on Pd3Sn and the α3 phase based on Pd2Zn did not contribute to the age-hardening of this alloy.

興遼國의 성립과 對高麗 구원 요청

李孝珩 부산대사학회 1998 역사와 세계 Vol.- No.22

미생물 유래 β-glucan 분리 · 정제 및 이를 이용한 오염물질 정화용 복합 미생물제재 개발

서현효,이현돈,김형갑 진주산업대학교 산업과학기술연구소 2007 산업과학기술연구소보 Vol.- No.14

β-glucan occuring mainly in mushrooms and fungi are attractive candidates for numerous industrial application due to their pharmacological activity such as antitumor activity via immunomodulating behavior and excellent rheological properties such as emulsification, viscosity, jellation, etc. Screening of β-glucan producing microorganism was performed by congo red dye binding assay of ethanol-precipitates from each culture filtrate. The β-glucan produced form the selected strains was purified mainly by directly diluting the culture broth with the same volume of water, removal of cells by centrifugation at 4,000×g for 20 mim, and precipitation with 3 volumes of ethanol. The monosaccharide composition was analyzed by either TLC or HPLC afer trifuoroacetic acid hydrolysis. The molecular mass of the β-glucan of HH-71 strain was estimated to be about 4,500,000 dalton on a GFC-HPLC chromatogram. A Bacillus protease coated with β-glucan showed 3-times more increased thermal stability comparing to the uncoated control when stored at 30℃ for 1 week. In a similar manner coating of wastewater (containing chlorinated organic compounds) treatment bacteria with β-glucan resulted in significant increase of thermal stability. Although more detailed experimental data need to be accumulated, these preliminary data clearly suggest that β-glucan is applicable as a coating material to stabilize activity or viability of industrial enzymes and microorganisms for treatment of wastewater. Based on these results, β-glucans obtained from HH-71 and HH-87 strains are currently investigated for coating ablility of microbial consortia for the treatment of wastewater.

전원도시(田園都市)의 개념적 특성에 관한 연구 : Ebenzer Howeard의 전원도시 개념을 중심으로 Focused on the Garden City in Ebenezer Howard

정효성,이일형 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.2

Ebenezer Howard was the originator of the Garden City movement and his efforts enabled the first darden cities to be built. It's examples are Letchworth(1903) and Welwyn(1919). Ebenezer Howard had been impressed by spiritual values of many theories in the 19th and early the 20th century. The essencial characteristics of the Garden City are 'The Master Key' 'The Three Magnets''The Garden City-Ward & Center' 'Social Cities-Group of Slumless, Smokeless Cities'. This study aims to analyze the characteristic of Garden City and it's influences to Letchworth and Welwyn.

하악과두 골절에 대한 임상적 연구

손보형,이효빈,황호길,윤창륙,여환호 大韓顎顔面成形再建外科學會 1992 Maxillofacial Plastic Reconstructive Surgery Vol.14 No.4

The author investigated the 162 patients with the condylar fractres of the mandilble who were admitted in Dept. of Oral and Maxillofacial Surgery, Hospital of Chosun Dental School from January 1985 to September 1992 clinically, including fracture incidennce, age and sex of the patients, causes of injures, associated injures, treatments and complications and obtained the following results. 1. Of the 449 patients with mandibular fractures, 162patients suffered condylar fractures(36.1%). 2. Of the 162 patients, males with condylar fractures were 128 patients, by a ratio of 3.8 : 1. 3. The most frequently affected age group was the third decade(32.7%). 4. Falls were ranked as the predominant cause(50.6%), followed by traffic accident(27.8%) and violence (16.0%). 5. The incidence of single condylar fractures was 28% and symphysis fractures were the most commomest of the concomittant injuries(60%). 6. The subcondylar fractures occurred most frequently(41.6%) and anteromedial displacement of the condylar fragments occurred most frequently(45.4%) 7. Of the all condylar fracture patients, children under 15 of age comprized 31 patients(19.1%) and condylar head fractures occurred most frequently at those children. 8. Of the managetments in condylar fractures, open reduction was 52.5% and remainder were closed reduction(47.5%). 9. Complications ensured such as TMJ ankylosis, limitation of mouth opening and mandibular movements, TMJ dysfunction, and anterior open bite.

웹 시술을 이용한 네트워크 모니터링 시스템의 설계 및 구현

임효택,이광형,조정복 東西大學校 1998 동서논문집 Vol.4 No.-

현재의 네트워크 관리는 그 크기와 복잡도가 증가함에 따라 관리하기가 어렵고 또한 네트웍관리 도구의 사용방법을 숙지하기가 어렵다. 또한 현재의 관리 도구들은 플랫폼에 종속적이어서 서로 다른 플랫폼에서 동일한 관리도구를 사용할 수 없으며 일로 인해 네트웍 관리 도구의 개발 속도가 지연된다. 따라서 앞으로의 네트웍 관리도구은 복잡성, 플랫폼 종속성을 해결할 수 있고 효율성과 호환성을 갖추고 있어야 하는데 이러한 요구사항은 자바와 SNMP를 이용한 Web 기술을 이용하여 충족할 만 한 해결책을 제시할 수 있다. 본 논문은 인터넷의 성능 및 장애관리를 위하여 Java를 이용한 Web 기반의 네트워크 트래픽 모니터링 시스템을 설계하고 구현하였다. 이 시스템은 네트워크 장비(허브, 라우터, 브리지 등)에 탑재되어 있는 SNMP agent간에 관리정보를 교환함으로서 네트워크 트래픽을 모니터링 할 수 있는 시스템이다. 실제로 동서대학교 교내의 네트웍의 허브와 라우터 장비를 대상으로 플랫폼에 비종속적인 네트웍 트래픽 모니터링 시스템을 구현하였다. 이 시스템은 Web을 이용한 사용자에게 친숙성을 제공하기 위하여 GUI(Graphic User Interface)부분을 JFC(Java Foundation Classes)로 강화하였다. Today's computer networks are composed of multiple types of interconnected networks. On top of these networks, there exist various systems and services supporting a wide variety of applications within an organization. Providing a secure, reliable and efficient operating environment to support the organization's daily activities and its business is the most challenging task faced by operations and management staff today. In order to provide such an environment, computer networks must be monitored for performance, configuration, security, accounging and fault management. Current management practices typically involve the use of complex, hard-to-learn and hard-to-use tools for managing networks. What is needed desperately is a set of simple, uniform, ubiquitous tools for managing networks. Web-based management is a promising approach that can provide such a solution. This paper focuses on the use of Web technology for the purposes of network traffic monitoring and reporting. In this paper, we present a design and implementation of a Web-based network traffic monitoring and reporting system that satisfies those requirements. We also present guidelines we have formulated and used for analyzing network traffic. We then discuss about our future works for network traffic monitoring.