n-터플에 기초한 두 가지 완전 해싱 기법

이종근,강신준 國立 昌原大學校 基礎科學硏究所 1993 基礎科學硏究所論文集 Vol.4 No.-

본 논문에서는 n터플을 기초로 한 두 가지 완전 해쉬기법을 제시 하였다. 사실 n터플은 heuristic알고리즘을 이용하여 문자의 집합으로 표시할 수 있으며, 이는 다시 0/1 행렬이나 터플 테이블로 표시 된다. 본 연구에서는 Ziegler기법을 이용하여 완전 해쉬 함수를 구조하였다. In this paper, two new perfect hashing methods based on n-tuple are presented. A unique n-tuple from a set of words extracted by a heuristic algorithm. Then the extracted n-tuples are mapped into a 0/1 sparse matrix or tuple table. Using Ziegler's row displacement method or backtracking a perfect hash function is constructed.

Sodium Dodecyl Sulfate의 분해반응에 대한 속도론적 연구

이길준,김종용,박병각 嶺南大學校 環境問題硏究所 1994 環境硏究 Vol.14 No.1

하천수에서 분리해 낸 SDS(Sodium Dodecyl Sulfate) 분해균주에 의하여 분해균주량의 변화와 SDS의 농도변화를 주어 SDS를 분해시킬 때 그 분해반응을 속도론적으로 연구하였다. 실험결과 SDS의 분해를 BOD로 표시하여 분해률을 측정한 속도식은 1차로 나타남을 알 수 있었다. 그리고 분해균주량의 변화와 SDS농도의 변화에 따른 속도상수는 분해규준량에는 영향을 받지 않으나 SDS의 농도에는 영향을 받음을 알 수 있었다. 그리고 활성화에너지는 5.304kcal/mol, 활성화 파라메타인 ???와 ???는 각각 4.69kcal/mol, -56.90 e.u.임을 알았다. Kinetic studies were carried out for change in BOD of SDS degradating microorganism isolated from river water. It is found that the decomposition of SDS is first order. Rate constants for the decomposition of SDS and its degrading microorganism found not to have an influence on variation of SDS-degrading microorganism but have an influence on SDS concentration. And thermodynamic parameters, Ea, ???? and ????, were obtained the value of 5.304kcal/mol, 4.69kcal/mol and -56.90 e.u., respectively.

E-초등학교 어린이의 영구치 맹출시기 및 순서

권정현,최병재,이제호,김성오,손흥규,최형준 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.2

치아 맹출은 나이, 성별, 인종, 시대에 따라 시기 및 순서의 차이가 있으나, 교과서에 인용되어 임상에서 사용되는 영구치 맹출 및 치근 형성에 대한 자료는 1933년 Logan과 Kronfeld가 발표한 것이므로 현재 한국 어린이의 영구치 맹출 경향과 차이가 있을 수 있다. 따라서 이번 연구의 목적은 한국 어린이의 영구치 맹출연령을 구하고, 이를 근거로 맹출순서를 알아보며, 이전 국내외 연구자료와 비교하여 차이를 알아보는 것이다. 이에 1998년부터 2005년까지 연세대학교 치과대학병원 소아치과에 내원하여 구강검진을 시행한 E-초등학교의 어린이 중 만 6세에서 만 12세의 2,619명 (남자 1,307명, 여자 1,312명)의 자료를 수집하여 영구치의 맹출시기 및 순서에 대해 연구 한 바 다음과 같은 결론을 얻었다. 1. 상악의 영구치 맹출시기는 중절치는 남자 만 6.81세, 여자 만 6.73세, 측절치는 남자 만7.78세, 여자 만7.65세, 견치는 남자 만10.48세, 여자 만9.92세, 제1소구치는 남자 만9.76세, 여자 만9.63세, 제2소구치는 남자 만10.66세, 여자 만10.49세, 제1대구치는 남자 만6.39세, 여자 만6.26세, 제2대구치는 남자 만12.13세, 여자 만 12.03세로 나타났다. 2. 하악의 영구치 맹출시기는 중절치는 남녀 모두 정확한 시기의 측정은 불가능하였지만, 만 6.08세 이전에 맹출한다는 것을 추정 할 수 있었고, 측절치는 남자 만6.78세, 여자 만6.65세, 견치는 남자 만9.76세, 여자 만9.05세, 제1소구치는 남자 만9.82세, 여자 만9.59세, 제2소구치는 남자 만10.67세, 여자 만10.52세, 제1대구치는 남자 만6.22세, 여자 만6.12세, 제2대구치는 남자 만11.58세, 여자 만 11.14세로 나타났다. 3. 맹출순서는 상악은 제1대구치, 중절치, 측절치, 제1소구치, 견치, 제2소구치, 제2대구치 순이었고, 하악은 중절치, 제1대구치, 측절치, 견치, 제1소구치, 제2소구치, 제2대구치 순이었다. 4. 모든 영구치에서 남자보다 여자가 빨리 맹출하였으며, 상악은 약 0.19세, 하악은 약 0.29세 먼저 맹출하였다. 5. 남녀 모두 상악은 측절치와 제1소구치 사이, 하악은 측절치와 견치 사이에 휴지기가 있었고, 남자의 휴지기는 상악 1.98년, 하악 2.98년, 여자는 상악 1.98년, 하악 2.40년이었다. The purpose of this study was to present new data on the timing and sequence of permanent teeth emergence and to compare these findings with the results of earlier studies. The dental examinations had been performed to E-elementary school students, who visited the Yonsei University Dental Hospital between 1998 and 2005; 1,307 boys and 1,312 girls with the age ranging from 6 to 12 years old. The followings were concluded. 1. Eruption time of the maxillary permanent teeth is as follows, It was 6.81 years in male and 6.73 years in female for the central incisor, 7.78 years in male and 7.65 years in female for the lateral incisor, 10.48 years in male and 9.92 years in female for the canine, 9.76 years in male and 9.63 years in female for the first premolar, 10.66 years in male and 10.49 years in female for the second premolar, 6.39 years in male and 6.26 years in female for the first permanent molar, and 12.13 years in male and 12.03 years in female for the second permanent molar. 2. Eruption time of the mandibular permanent teeth is as follows. The central incisor could not be determined in this study, but it is assumed to erupt before the age of 6.08. In the mandible, eruption time was 6.78 years in male and 6.65 years in female for the lateral incisor, 9.76 years in male and 9.05 years in female for the canine, 9.82 years in male and 9.59 years in female for the first premolar, 10.67 years in male and 10.52 years in female for the second premolar, 6.22 years in male and 6.12 years in female for the first permanent molar, and 11.58 years in male and 11.14 years in female for the second permanent molar. 3. The eruption sequence is as follows. In the maxilla, the first permanent molar erupted first, followed by the central incisor, the lateral incisor, the first premolar, the canine, the second premolar, and the second permanent molar. In the mandible, the central incisor erupted first, followed by the first permanent molar, the lateral incisor, the canine, the first premolar, the second premolar, and the second permanent molar. 4. Tooth eruption occurred earlier in female compared to male by average of 0.19 year in the maxilla and 0.29 year in the mandible. 5. In both male and female, the hiatus (interval of rest) occurred between the emergence of lateral incisor and first premolar in the maxilla while it was observed between the lateral incisor and canine in the mandible. Male had a hiatus of 1.98 years in the maxilla and 2.90 years in the mandible, while the female's were 1.98 years and 2.40 years, respectively.

염소이온이 코발트의 부식반응에 미치는 영향

朱宰伯,李政峻 弘益大學校 科學技術硏究所 2000 科學技術硏究論文集 Vol.11 No.-

Electrochmical dissolution behavior of cobalt in chloride solution was investigated. Kinetic data of cobalt dissolution and hydrogen reduction were measured in acid and alkaline solutions containing chloride ions at several pH values. Rotating disc electrode was used in order to eliminate the mass transport limitations at the electrode surface. The effect of pH on the corrosion potential and corrosion current were observed. Also the kinetic mechanism of cobalt dissolution in acid solution was examined. It was found that the dissolution behavior in chloride solution is quite different from that in sulfate solution.

한중콘크리트의 관리재령 연장을 이용한 설계기준강도 확보 기법

이영준 ( Lee Young-jun ),이혁주 ( Lee Hyuk-ju ),한준희 ( Han Jun-hui ),이상운 ( Lee Sang-woon ),이정교 ( Lee Joung-gyo ),한민철 ( Han Min-cheol ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1

The purpose of the research is suggesting the temperature compensation strength for Unicode of constructure standard from Ministry of land, infrastructure and transport. As a result, for the concrete mixture with 100 % OPC, 6, and 3 MPa of compensating strength values were necessary when the temperature were from 4 to 9 ℃, and from 9 to 17°C, respectively. Additionally, when the temperature was higher than 17℃, compensating strength value was not necessary. In the case of 20 % of blast furnace slag replaced concrete mixture, 9, 6, and 3 MPa of compensating strength values were necessary when the temperature were from 4 to 6℃, from 6 to 12℃, and higher than 17℃, respectively.

증례 : 비장티푸스성 살모넬라균에 의한 심율동전환제세동기 삽입부 감염 1예

이동준 ( Dong Jun Lee ),이승현 ( Seung Hyun Lee ),한재현 ( Jea Hyun Han ),이승준 ( Seung Jun Lee ),박희남 ( Hui Nam Pak ),이문형 ( Moon Hyoung Lee ),정보영 ( Bo Young Joung ) 대한내과학회 2013 대한내과학회지 Vol.84 No.3

The safety and efficacy of vitamin K antagonist in atrial fibrillation patients with previous ulcer bleeding : Long-term results from a multicenter study

Lee, Seung-Jun,Sung, Jung-Hoon,Kim, Jin-Bae,Ahn, Min-Soo,Lee, Hye Young,Uhm, Jae-Sun,Pak, Hui-Nam,Lee, Moon-Hyoung,Kim, Jong-Yun,Joung, Boyoung Wolters Kluwer Health 2016 Medicine Vol.95 No.47

<▼1><P>Supplemental Digital Content is available in the text</P></▼1><▼2><P><B>Abstract</B></P><P>This study aimed to evaluate the safety and efficacy of vitamin K antagonist (VKA) in atrial fibrillation (AF) patients with previous ulcer bleeding.</P><P>In this multicenter, retrospective analysis, clinical outcomes of 754 AF patients with a history of ulcer bleeding were evaluated. After ulcer treatment, 458 patients (61%) were treated with VKA, and the outcomes were compared to 296 patients (39%) without VKA.</P><P>VKA treatment significantly increased major bleeding (7.3%/year vs 3.2%/year, <I>P</I> < 0.001), and reduced major adverse cardiac events (MACE) (5.4%/year vs 10.0%/year, <I>P</I> < 0.001). Specifically, risk of gastrointestinal bleeding was significantly higher in the VKA group than no-VKA group (5.7%/year vs 2.6%/year, <I>P</I> < 0.001). Consequently, there was no difference in the incidence of composite of a MACE and major bleeding, between the 2 groups. In patients with time in the therapeutic range (TTR) ≥65%, VKA significantly decreased MACE (2.8%/year vs 10.0%/year, <I>P</I> < 0.001) without increasing major bleeding. Net clinical benefit model showed beneficial effects of VKA in patients with TTR ≥65%, and harmful effects in those with TTR < 55%.</P><P>In AF patients with previous ulcer bleeding, VKA treatment did not improve clinical outcomes unless the international normalized ratio level was constantly maintained (TTR ≥65%), as the gastrointestinal bleeding (GIB) risk significantly increased.</P></▼2>

Influence of Interferon-${\tau}$ on the Production of Prostaglandins, Cyclooxygenase-2 Expression In Vitro and Release of Progesterone in Bovine Endometrial Cells

Lee, Ji-Eun,Lee, Yong-Seung,Yoo, Han-Jun,Lee, Kyoung-Jin,Park, Joung-Jun,Cheong, Hee-Tae,Yang, Boo-Keun,Park, Choon-Keun The Korean Society of Embryo Transfer 2012 한국동물생명공학회지 Vol.27 No.4

The purpose of the present study was to investigate the effect of IFN-${\tau}$ on prostaglandin synthesis, cyclooxygenase-2 (COX-2) gene expression in vitro and concentration of progesterone (P4) in endometrial cells. Epithelial and stromal cells cultured in vitro were isolated from bovine endometrium and stimulated with increasing doses of IFN-${\tau}$ (0, 0.02, 0.2 and 2 ug/ml). Human chorionic gonadotropin (hCG, 1.5 IU/ml) was used as a positive control. Prostaglandin $E_2$ and $F_{2{\alpha}}$ levels in the culture media were analyzed by enzyme immunoassays and total RNA was extracted from the cells for RT-PCR. P4 concentrations of blood samples were assayed by chemiluminescent immuno assays system. In epithelial cells, COX-2 gene expression was increased in the presence of IFN-${\tau}$ (p<0.05), but it was not significantly different in all groups of stromal cells except for 2 ug/ml IFN-${\tau}$ group (p<0.05). Although IFN-${\tau}$ did not affect $PGE_2$ and $PGF_{2{\alpha}}$ production in epithelial cells, it decreased $PGE_2$ and $PGF_{2{\alpha}}$ production significantly in stromal cells (p<0.05). In vivo experiment, blood concentration of P4 was significantly increased after addition of IFN-${\tau}$ (1 ug/ml). The results indicate that PG production was mediated by COX-2 expression in stromal cells but it was not affected in epithelial cells and this suggest that treatment of IFN-${\tau}$ could improve the implantation environment of uterine by maintenance of high P4 concentration.

Identification of Antiadipogenic Constituents of the Rhizomes of Anemarrhena asphodeloides

Joung Youn, Ui,Ye Seul, Lee,Ha Na, Jung,Jun, Lee,Joo Won, Nam,Yoo Jin, Lee,Eun Sook, Hwang,Je Hyun, Lee,Dong Ho, Lee,Sam Sik, Kang,Eun Kyoung, Seo 이화여자대학교 약학연구소 2010 藥學硏究論文集 Vol.- No.20

Three new phenolic compounds, (E)-4'-demethyl-6-methyleucomin (1), anemarcoumarin A (2), and anemarchalconyn (3), were isolated from an ethyl acetate extract of the rhizomes of Anemarrhena asphodeloides, together with seven known compounds (4-10). The structures of the new compounds (1-3) were determined on the basis of spectroscopic data interpretation. Compound 3 exhibited a potent inhibitory effect against the differentiation of preadipocyte 3T3-L1 cells with an IC50 value of 5.3 microM.

Analysis of Uterine Bacteria to Increase Reproductive Efficiency in Hanwoo(Korean Native Cattle)

Joung-Jun Park,Han-Jun Yoo,Young-Jae Cho,Hye-Won Choi,Pil-Sang Yoon,Seon-Goo Lee,Bae-Dong Jung,Tae-Wook Hahn 韓國受精卵移植學會 2013 한국동물생명공학회지 Vol.28 No.1

The objective of this study was to evaluate several types of uterine bacteria in Hanwoo. uterine bacteria from randomly selected 5 uterus was collected by flushing methods into a sterilized 1.5 ml centrifuge tube and was inoculated onto MacConkey agar and blood agar, respectively. After being incubated for 5% CO2, aerobic or anaerobic condition at 37℃ during 48h, bacterial colonies were selected and re-inoculated onto blood agar plates. Re-cultured colonies were identified by Gram staining and finally identified using Vitek system. The identified bacteria were Staphylococcus lentus, Staphylococcus sciuri, Staphylococcus vitulinus, Staphylococcus warneri of Gram (+) and Rhizobium radiobacter, Sphingomonas paucimobilis of Gram () bacteria. Although, pathogenicity of identified bacteria was unclear, the bacteria can have an effect on the uterine microenvironment. Therefore, repetitive research will be required to determine the effects of bacteria in cattle exposed to a various environment.