부산지역 무균성 뇌막염 원인 바이러스의 분리 및 동정 : 1998년을 중심으로

김영희,정영기,김기순,지영미,윤재득,김병준,구평태,민상기,정구영,김만수,조경순 동의대학교 기초과학연구소 2000 基礎科學硏究論文集 Vol.10 No.1

The incidence of aseptic meningitis infection is ensuing and threatening the health of children. Enteroviruses are the major agents of aseptic meningitis and identification of virus has been a clue to diagnosis and epidemiology. The outbreak of aseptic meningitis occurred in Pusan, 1998. Patients were concentrated from April through November. Children were more susceptible than adults. Among 306 cases of specimens from stool, throat swab tested, only 7.2% were positive on virus isolation, 12 cases from stool and 10 from throat, respectively. All isolated 7 serotypes of viruses represented cytopathic effect on cultured cells. Three types of echovirus 6, 25, 30 and coxsackievirus B2, B3, B4, B6 were identified by neutralizing anti body test. Isolated coxsackievirus and echovirus were observed by an electron microscope with negative staining.

신속하고 균일한 묘출현 증진을 위한 종자전처리 기술

조동,손병구,강점순,최영환,안종길 密陽産業大學校 農業技術開發硏究所 1998 農業技術開發硏究所報 Vol.2 No.1

Preplant seed hydration treatments, particularly at low water potential, mobilized seed's resources that are utilized for rapid and synchronous germination, improved emergence rare, and larger stand size and yields. Seed priming is ideally suited to combat or lessen the impact of a number of soil and climatic constraints, including cold and wet conditions, thermoinhibition, drought, and incidence of diseases. The priming treatment is versatile enough to be integrated with other preplant physiological and non-physiological treatment to combat other internal and external constraints. These include chilling to break the primary dormancy, permeation with hormones to prevent the induction of secondary dormancy, and treatment with pesticides and beneficial microbes to combat seed and seedling diseases during stand establishment. The success or failure of priming treatment are influenced by a complex interaction of factors including plant species, osmeticum, water potential of the priming agent, during of priming, temperature, seed vigor, and dehydration and storage conditions following priming. Seed priming treatment under controlled temperature conditions, allows seeds to imbibe water and go through the initial stages of germination without radicle protrusion through seed coat. The use of a matricum for solid matrix priming(SMP) follows the same principals as for solution osmotic priming. The choice in mainly based on choosing a material wherein water uptake by the seed can be more closely regulated. Concentration of the matricum or osmoticum can be altered to fine-tune water relations The other factors that effect the results from seed priming, aeration, temperature, duration, light. dehydration, and storage are dependent on the species being primed. All crop seeds need air to germinate, thus optimizing aeration during priming. Germination rate and uniformity can be improved by priming for a vast array of crops as evidenced. The numbers of different species commercially primed and available to producers is quite small. The reasons for this might include the high charges to the grower of primed seed, lack of knowledge and or experience by growers of the results obtained from priming. Finally, more practical and essential subjects such as seed vigor and priming effectiveness, effects of dehydration after priming, storage conditions, and the ideal combination of matrix-solid, water, and seeds in SMP treatments are in need of further studies.

尖端産業團地의 開發과 地域發展 : 淸州「테크노-빌」을 中心으로 A Case of Chongju Technoville

조흥수,고영구 안성산업대학교 1994 論文集 Vol.26 No.-

High-tech industrial parks are a version of technoville in Korea in respect of providing a complex of industry, research, high-level education and housing function. The development of High-tech industial parks raims to promote national economy and balanced regional growth together. This paper illustrates the expected impacts throughout the national-wide level as well as local level and points out the necessity for various subsidizations from central govemment together with formulation of special law to promote them. The new technoville planned in the Chongju suburb is not only defferent from existing high-tech industrial parks and technopolis, but embodies a new concept of development. That is, the techonville is organized by local provincial government. The industrial park emphasizes the production orientation with the ville landscape and function of its residential and recreational area. There are many highly desirable locational advantages to the area such as the international air port under construction nearby, Taeduck Researth and Development Center, and an affluent overflow of skilled labour from the capital region. Furthermore, a favorable industrial linkage with existing industrial parks and rural industrial estate provides outstanding locational characteristics which can not be found in any other part of the country.

Hydropriming 처리가 오이종자의 발아성에 미치는 영향

조동,최영환,손병구,감정순,안종길 密陽産業大學校 農業技術開發硏究所 1998 農業技術開發硏究所報 Vol.2 No.1

본 연구는 오이종자의 발아율 향상과 발아촉진을 위해 처리가 간편하고, 처리비용을 절감할 수 있는 hydropriming의 실용화를 위해 필수적인 요인에 관한 실험을 수행하였다. 오이 종자의 발아촉진에 최적 priming 처리제는 50mM ·NaN03였다 유근장 및 유근 건물 중은 priming 처리제 종류에 따라 유의적인 차이는 없었으나, priming 및 hydropriming 종 자는 무처리보다는 높았다. 그러나 50mM NaN03와 hydropriming 처리간 발아력 증진 효과가 동일하여 오이종자에서 물을 이용한 hydropriming은 처리비용을 절감할 수 있어 합리적인 종자처리였다 오이 종자의 hydropriming 적정 처리온도는 20℃, 처리시간은 24시간이였다. Hydropriming시 적정 용액량은 종자 2g에 대한 용액량 10m 공급처리가 발아율 향상. T50,MDG 단축 및 유근생장에 효과적 이였다. 인위노화 종자는 발아율이 감소하였고 발아속 도는 지연되었으며, 비정상적인 발아는 증가하였다. 활력이 저하된 노화종자를 hydropriming 처리는 발아율이 향상되었고, 조기 발아하였다 또한 비정상인 발아는 감소되었으며, 유근생장이 촉진되어 종자력이 부분적으로 회복되었다. 이러한 경향은 노화일수록 경과된 종자일수록, 부적당한 발아조건인 15℃ 명확하게 나타났다. Various hydration treatments have been devised to improve the rate and uniformity of seed germination as well as seed viability. Hydropriming and priming, the imbibition of seeds in distilled water and osmotic solutions respectively, are useful techniques for early establishment of uniform seedlings. In this study, the optimum conditions were determined for hydropriming cucumber seeds. Effects of hydropriming were compared those of osmotic priming. Seeds, hydroprimed or primed with distilled water and 50 mM NaN03 at 20℃ for 24 hour, showed shorter number of days to 50% of the final germination percentage(T50) , and mean number of days to germination(MDG) than those untreated seeds. Nor did the ratio between the amount of seed to the volume of solution affect percent germination. But, hydorprimed with 10 ml distilled water showed improving the rate of germination than other treatment seeds. Hydropriming the aged seeds did improve percent germination at 15℃ and 25℃ . The T50 and MDG values were reduced significantly by hydropriming the aged seeds regardless of germination temperature. In addition to being simple and inexpensive, the quicker germination of hydropriming at low temperature. The effectiveness of hydropriming seeds caused some increase in the percentage of normal seedlings.

Er:YAG laser 조사에 의한 치은연하치석 제거효과

조인구,김영준,김병국,정현주 전남대학교 치의학연구소 2002 구강과학 Vol.14 No.3

The purpose of this in vitro study was to evaluate the efficiency of Er:YAG laser on calculus removal and the morphologic changes and hardness of the irradiated surface at different power settings. This experiment used human teeth which were extracted due to periodontal disease and had a band of calculus. Forty root slabs (5x5mm^2) were made and divided into control group and irradiated groups. Experimental groups were as follows;Control group (root planing), Group 1 (irradiated with laser at 30mj), Group 2(irradiated with laser at 60mJ). and Group 3(irradiated with laser at 100mJ). Twelve root slabs embedded in resin block were used in each group. Er:YAG laser was applied under water irrigation with the tip held perpendicular to the root surface in contact mode. The treatment time was measured until the calculus was removed completely under naked eyes. The efficiency of calculus removal was evaluated by the time for removal. Morphological changes of laser irradiated site were observed under SEM and the surface hardness was measured using a VH tester. The results were as follows; 1. The efficiency of laser scaling was increased with increasing the energy level of irradiation. (p<0.05) 2. The morphological changes such as carbonization, crater and scale-like defects in the irradiated root surface were frequently observed with increasing the energy level. 3. The surface hardness tended to increase at 60mJ and 100mJ irradiated groups than that of control group. From the results evaluting on the efficiency, morphological change, and surface hardness, lower energy level was suggested f'or the clinical application of the Er:YAG laser in scaling.

간접 복합레진 합착 시 자가부식형과 자가접착형 레진시멘트의 상아질에 대한 미세인장 결합강도

박재구,조영곤,김일신 大韓齒科保存學會 2010 Restorative Dentistry & Endodontics Vol.35 No.2

본 연구는 간접 복합레진 수복물을 1종의 자가부식형 레진시멘트와 3종의 자가접착형 레진시멘트를 이용하여 상아질에 합착하였을 때 각 레진시멘트의 미세인장 결합강도와 결합계면의 차이를 평가하기 위하여 시행하였다. 발거된 상.하악 대구치 교합면 측 상아질에 Tescera 복합레진 블록을 레진시멘트(PA 군: Panavia F 2.0, RE 군: RelyX Unicem Clicker, MA 군: Maxem, BI 군: BisCem)를 이용하여 합착하였다. 증류수에 24시간 동안 보관한 후, 합착된 면의 단면적이 1.0 × 1.0 mm인 막대모양의 시편을 제작하여 각 시편에 분당 0.5 mm의 crosshead speed로 인장하중을 가하였다. 각 군의 미세인장 결합강도는 one-way ANOVA와 Tukey의 HSD 방법을 이용하여 비교하였다. FE-SEM 하에서 모든 파절편의 상아질 쪽 파절양상과 레진시멘트-상아질 및 레진시멘트-복합레진의 계면을 관찰하였다. 본 연구의 결과 간접 복합레진 블록을 레진시멘트로 상아질에 합착할 때 PA 군과 RE 군은 MA 군과 BI 군보다 높은 결합강도와 긴밀한 접착 및 레진테그가 관찰되었고, 복합레진과 레진시멘트 간에는 간극이 관찰되었다. The purpose of this study was to evaluate the microtensile bond strength (μTBS), failure modes and bonding interfaces of self-etching and three self-adhesive resin cements to dentin and indirect composite resin. Cylindrical composite blocks (Tescera, Bisco Inc.) were luted with resin cements (PA: Panavia F 2.0, Kuraray Medical Inc., RE: RelyX Unicem Clicker, 3M ESPE., MA: Maxem, Kerr Co., BI: BisCem, Bisco Inc.) on the prepared occlusal dentin surfaces of 20 extracted molars. After storage in distilled water for 24h, 1.0 mm × 1.0 mm composite-dentin beams were prepared. μTBS was tested at a cross-head speed of 0.5 mm/min. Data were analyzed with one-way ANOVA and Tukey’s HSD test. Dentin sides of all fractured specimens and interfaces of resin cements-dentin or resin cements-composite were examined at FESEM(Field Emission-Scanning Electron Microscope). In conclusion, PA and RE showed higher bond strength and closer adaptation than MA and BI when indirect composite blocks were luted to dentin using a self-etching and three self-adhesive resin cements.

비외상성 두개내 출혈 환자에서 심근손상의 발생과 예후에 미치는 영향

강구현,황성호,이강현,조준휘,김성환,문중범,박해상,이서영,이성수,김헌주 대한응급의학회 2000 대한응급의학회지 Vol.11 No.4

Objective: The aim of this study was to investigate the clinical significance of myocardial injuries in patients with nontraumatic intracranial hemorrhage by identifying the occurrence of myocardial injury and defining its correlation with subsequent cardiovascular events. Subjects and methods: One hundred twenty-four patients with nontraumatic intracraninal hemorrhage presented to the emergency department within six hours from onset of symptoms were enrolled. Brain CT, serial electrocardiography, and echocardiography were done at the emergency center. Blood samples for troponin I and creatine kinase(CK)-MB were drawn immediately and eight hours after admission, Troponin I and CK-MB were measured using a chemiluminescent immunoassay, respectively. Results: Electrocardiographic and echocardiography abnormalities were found in 65 cases(52.4%) and 21 cases(17%), respectively. Serum troponin I and creative kinase-MB were increased in 35 cases (28.2%) and in 58 cases(46.8%), respectively. Abnormal findings of echocardiography and ECG, as well as elevated levels of serum troponin I and creative kinase-MB, were associated with an increased risk of cardiovascular event and survival. Logistic regression analysis revealed that an abnormal echcocardiographic finding and elevation of serum troponin I were factors associated with the occurrence an adverse cardiovascular event and that electrocardiographic abnormalities and initial mental status were factors associated with poor prognosis. Conclusion: This study reveals that actual myocardial injury develops in a significant proportion of patients with nontraumatic intracranial hemorrhage and that the development of the myocardial injury is associated with an adverse cardiovascular event that occurs during admission.

자가부식 프라이머 접착제의 적용방식이 법랑질의 결합강도에 미치는 영향

박재구,조권환,조영곤 大韓齒科保存學會 2008 Restorative Dentistry & Endodontics Vol.33 No.2

The purpose of this study was to evaluate the effect of passive or active application of primer and coat times of bond on the shear bond strength when a self-etching primer adhesive (Clearfil SE Bond) was applied to enamel surface. Crowns of sixteen human molars were selected. Buccal and lingual enamels of crowns were partially exposed and slabs of 1.2 mm thick were made. They were divided into one of four equal groups (n = 8). Group 1: passive application of Primer and 1 coat of Bond, Group 2: active application of Primer and 1 coat of Bond, Group 3: passive application of Primer and 2 coats of Bond, Group 4: active application of Primer and 2 coats of Bond. Clearfil AP-X was bonded to enamel suface of each group using Tygon tubes. The bonded specimens were subjected to microshear bond strength (uSBS) testing with a crosshead speed of 1 mm/min. The results of this study were as follows; 1. The uSBS of Group 1 was the lowest among groups and the uSBS of Group 4 was the highest. 2. There was not statistically significant interaction between enamel uSBS by application method of Primer and coat time of Bond (p > 0.05). 3. There was not statistically significant difference between enamel uSBS by passive and active application of Primer (p > 0.05). 4. There was statistically significant difference between enamel uSBS by one- and two-coat of Bond (p < 0.05). 이 연구는 Clearfil SE Bond를 거친 법랑질 표면에 적용할 때, 자가부식 프라이머의 적용방식 (능동적인 또는 수동적인)과 접착레진의 도포회수 (1회 또는 2회)가 법랑질의 결합강도에 미치는 영향을 알아보기 위하여 시행하였다. 16개의 발거된 대구치 치관의 협면이나 설면에서 법랑질 절편을 만들어 4개의 군으로 배정한 다음, 1군은 프라이머를 수동적으로 적용한 후 접착레진을 1회 도포하였고, 2군은 프라이머를 능동적으로 적용한 후 접착레진을 1회 도포하였고, 3군은 프라이머를 수동적으로 적용한 후 접착레진을 2회 도포하였고, 4군은 프라이머를 능동적으로 적용한 후 접착레진을 2회 도포하였다. 적용된 접착레진을 10초간 광조사한 후, 법랑질 표면에 2-3개의 Tygon tube를 위치시키고 Clearfil AP-X를 충전하고 40초간 광조사 하였다. Universal testing machine을 이용하여 법랑질 표면에서 복합레진이 파절될 까지 분당 1.0 mm의 cross-head speed로 전단하중을 가하고 통계적으로 분석하여 다음과 같은 결과를 얻었다. 거친 법랑질에 대한 Clearfil SE Bond의 미세전단 결합강도는 자가부식 프라이머의 적용방식 보다는 접착레진의 도포회수에 의해 증가할 수 있음을 알 수 있었다.

테니스 양손 백핸드 드라이브 동작의 운동학적 분석

김의환,조효구,성영호,김성섭 한국운동역학회 2001 한국운동역학회지 Vol.11 No.1

The purpose of this study was to analysis the kinematic variables of two-handed backhand drive in tennis pretending just as real competition situation. Two male Korean juvenile top player(Left lead handed type) who was gold medalists and awarded in national championships 2000, was filmed on 16mm high speed cameras(Photo-sonic co., 100fps, from the front, side view) on performing in two-handed backhand drive in tennis stroke throughout the ball machine(Lob star co., 50km/h. on ball speed) by the method of three-dimensional analysis. The kinematic variables, temporal, posture were computer through film analysis. The results were as follows; 1) Temporal variable : In elapesd time by phase, the backswing showed the longest time(0.73∼0.23 sec.,) and the next was forward swing(0.39∼0.42 sec.), and then the follow through was followed(0.20∼0.23 sec.), and the total elapsed time was 1.35∼1.40 sec. 2) Posture variables : The right angles of the elbow decreased from the ready position to the follow through by gradually(145 ˚→77 ˚, 146 ˚ →92 ˚). When impact, the left angle increased. When follow through, showed a different pattern between subject A(increased) and subject B(decreased). The shoulder angle increase from the ready position to the backswing. When impact, it decreased, and when follow through, it increased again, and it showed the same pattern in right and left. The hip angle decreased from the ready position to the backswing, and when impact and follow through, it was shown as a little increase, and this means that when backswing, the posture was flexioned, and when impact and follow through, it swinged extensioned by gradually. In case knee angle, sub. A was swing small-scale deviation(129 ˚→165 ˚: 36 ˚), sub. B was swing large-scale deviation(117 ˚→163 ˚, 46 ˚), between flexion and extension in right and left. Generally reviewing the variable of posture by this result, we could see that sub. A's swing motion was more unstable, swing deviation more larger, and sub. B's swing motion was mort stable, swing deviation more smaller.

鷄龍山의 水棲昆蟲 群集에 관한 硏究

남상호,조영호,박영준,한용구,이정수 대전대학교 기초과학연구소 2002 自然科學 Vol.13 No.2

천황봉에서 발원하여 산간 계류를 형성하고 흐르다가 유성천과 합류해 금강으로 유입되는 계룡산 동학사 계곡의 수선곤충 군집을 조사한 결과 총 5목 17과 37종이 출현하였다. 이중에서는 하루살이류가 6과 14종으로 가장 많이 출현하였으며, 현존량은 파리류가 전체 1,165개체중 569개체(48.84%)로 가장 높게 나타났다. 전체 우점종은 꼬마하루살이와 깔다구류로 0.15의 우점도지수를 기록하였다. 종다양도는 제 4지점인 남매탑 계류의 합류점이 0.93으로 가장 높았고, 제 1지점인 은선산장 위 부근이 0.09로 낮게 나타났다. 각 지점별 오수생물계열은 초강부수성-강부수성으로 매우 낮게 조사되었다. Aquatic insect communities were investigated in a mountain streams of YIt. Iiyeryong1 one of the central areas of Korea, from March to September, 2002. As a result, 37 species of aquatic insects in 17 families and in 6 orders appeared during the study period, the order Ephemeroptera and Diptera of which were the most appeared. Ephemeroptera was consisted of 14 species of 6 families, and Diptera was consisted of 589 individuals(48.84%j of total individual nun-her. Dominant species was Baetis ther-micus and the subdominant species was Chironmidae sp.. Dominant species index of Baetis thermicils and Chironmidae sp. was O.15 The highest species diversity index was observed of site 4 as 0.93 and the lowest species diversity index was observed of site 1 as 0.09. Dominance indices ranged between 0.15 and 1.00 while diversity indices between 0.09 and 0.93. In relation to species diversity indices, Mt. Iiyeryong streams were determined as Isosaprobity-Polysaprobity area. In general, it is inferred from the aquatic insect community that typical mountain streams of Korea are low.