• 한국균학회지
• /
• 제26권2호통권85호
• /
• pp.256-264
• /
• 1998

한국에서 자생하고 소나무와 외생균근을 갖는 송이에 대한 18S ribosmal DNA의 DNA 서열을 조사하였다. 4개의 지역에서 채집된 송이의 514 bp 분석결과 18S rDNA의 서열는 모두 동일하였고, 경북대학교 미생물연구실의 연구 결과와는 4 bp가 차이가 나타났다. NCBI의 BLAST search결과, T. matstake와 제일 유사한 것으로 나타났다. 분석된 514 bp의 서열비교에서는 다른 버섯균과 차이가 있는 서얼 부분을 파악하였다. 또한, 이러한 자료를 이용하여 유사도 분석에서 각각의 속에 속하는 균들은 같은 묶음을 나타내고 있으나, 과 혹은 그 이상의 단위에서의 비교는 좋은 결과가 나오지 않았다. 본 연구를 통해 외생균근의 확인 작업에 필요한 primer 제작을 위한 사전 자료를 얻었으며, 또한 조사된 염기서열도 분석할 수 있었다.

• 한국어류학회지
• /
• 제29권4호
• /
• pp.244-251
• /
• 2017

본 연구는 2016년에 한국 남해에서 채집된 둥글넙치과 자어를 분자방법으로 동정하였으며, 자어의 크기별 외부 형태를 상세히 기술하였다. 채집된 자어 15개체 (3.53~19.49 mm 체장)의 mitochondrial DNA (mtDNA) cytochrome c oxidase subunit I gene (COI) 434 bp의 염기서열을 비교한 결과, 모두 사량넙치로 확인되었다. 사량넙치의 자어는 2개의 길게 연장된 등지느러미 기조를 가지며, 등지느러미와 뒷지느러미 기저에 흑색소포가 일렬로 나 있는 반면 체측에는 흑색소포가 없었다. 성장하면서 체장에 대한 두장 및 두고의 비율이 증가 추세에서 감소 추세로 바뀌는 변곡점이 체장 9.93 mm~10.73mm에서 확인되었다. 사량넙치 자어는 형태적으로 가장 유사한 동백가자미(Psettina iijimae)와 달리 등지느러미와 뒷지느러미의 기저 근처에 흑색소포군을 가지지 않는 점에서 잘 구분된다.

• 한국전자파학회논문지
• /
• 제21권9호
• /
• pp.1023-1029
• /
• 2010

본 논문에서는 PCS, WCDMA, 그리고 WiBro 대역에서 동작하는 이동 통신 기지국용 광대역 편파 다이버시티 안테나를 제안하였다. 본 안테나는 정사각 루프 형태의 다이폴 안테나와 마이크로스트립 급전 구조를 결합하여 설계하였다. 추가적으로 광대역 동작 시 반사판 구조에 의해 발생할 수 있는 방사 패턴 왜곡 현상을 초크(choke) 상자를 이용하여 개선하였다. 설계를 위한 모의 실험은 CST사의 MWS로 해석하였으며, 제작은 비유전율 3.33인 테프론 기판을 이용하여 제작하였다. 측정 결과, 대역폭(VSWR<1.5)은 640 MHz(1.75~2.39 GHz)를 얻었으며, 각 방사체 사이의 격리도는 -25 dB 이하를 얻었다. 그리고 PCS, WCDMA, WiBro 대역에서 최대 이득은 각각 8.9 dBi, 8.2 dBi, 8.6 dBi이다.

• 대한본초학회지
• /
• 제28권5호
• /
• pp.1-6
• /
• 2013

Objectives : This study was conducted to identify the original Sinomini Caulis et Rhizoma plant among Stephania tetrandra, Cocculus trilobus, and Aristolochiae fangchi to develop the genetic marker for Sinomini Caulis et Rhizoma. Methods : Sinomenium acutum was identified by the classification and identification committee of the National Center for Standardization of Herbal Medicines. The chloroplast ndhF gene was amplified. We performed sequences alignment analysis of Sinomenium acutum, Stephania tetrandra, C. trilobus, and A. fangchi using BioEdit program. The SFR markers designed were consisted of SF01, SR04, and SR05 primers. Results : Many variations of Sinomeni Caulis et Rhizoma are currently commercialized as herbal medicine. We compared the base sequences of the ndhF intergenic space of chloroplast DNA with Sinomenium acutum, Stephania tetrandra, C. trilobus, and A. fangchi. According to the results, it showed that the nucleotide variations were seen in 30 genes of four species. Phylogenetic analysis revealed that 4 species were classified into five groups based on an inter-group divergence in nucleotide sequence of 9%. We developed SFR marker nucleotides enough to authenticate respective species and confirmed its application on the band size at 419 base pair. These sequence differences at corresponding positions were available genetic markers to identity the Sinomeni Caulis et Rhizoma. Conclusions : Base on these results, the ndhF region was effective in distinguishing Sinomini Caulis et Rhizoma The SFR genetic marker was useful for identifying Sinomini Caulis et Rhizoma with other species.

• The Korean Journal of Physiology
• /
• 제24권1호
• /
• pp.123-129
• /
• 1990

A comparative study of acid-base balance has been made between acidemia-induced hyperkalemia and hyperkalemia-induced acidemia. A group of rabbits was infused 0.1 N hydrochloric acid solution and metabolic acidosis was induced. Another group was administered 20 mM potassium chloride solution and hyperkalemia was induced. The third group was infused 0.1 N hydrochloric acid and 20 mM potassium chloride solution, simultaneously. Acid-base data and plasma potassium ion concentration were monitored every thirty minutes in these three groups of rabbits. Following results were obtained: 1 ) Along with the infusion of hydrochloric acid, acute metabolic acidosis was induced in the rabbits. Plasma bicarbonate ion concentration decreased primarily in this group. As a respiratory compensation, there was a tendency of reduction of arterial $Pco_{2}$. The alteration of data became larger along with the amount of administration and the time elapsed. However, hyperkalemia was not so severe compared with the second group. 2) In potassium chloride infused group, plasma potassium ion concentration increased along with the time elapsed and the amount of infusion. And the alteration of acid-base data was parrallel to the level of potassium ion concentration, above all depression of pH was prominent. 3) Above data suggest that when acute metabolic acidosis was induced, exchange of intracellular potassium ion with extracellular hydrogen ion seems significant for the regulation of extracellular acid-base balance. And when hyperkalemia was induced with the infusion of potassium chloride solution, the exchange of intracellular hydrogen ion with extracellular potassium ion also seems significant for the regulation of extracellular potassium balance. 4) In the group of rabbits infused hydrochloric acid and potassium simultaneously, disturbances of acid-base balance and potassium balance were much more severe than two other groups. In these mixed disturbances, the process of compensatory mechanism might be inhibited and one disturbance might aggregate each other. 5) Through above data it has been postulated that in acid-base disturbance potassium balance can be sacrificed as a compensatory mechanism, and vice versa in disturbance of potassium balance. And our data also suggest that hydrogen ion and potassium ion are compensatory pair, one another.

• Animal cells and systems
• /
• 제1권3호
• /
• pp.429-434
• /
• 1997

A new genus with a new species of poecilostomatoid copepod, Polyankylis orientalis, is described based on a pair of specimens collected from a tide pool on muddy shore in Korea. It represents a new family of the lichomolgoid complex with the following distinguishing characters: (1) 6-segmented antennule (resulted from the fusion of the third and fourth segments) with additional aesthetascs in male, (2) hook on mediodistal corner of antennal coxobasis (first segment), (3) proximal and distal scales on the outer margin of mandible present, (4) main axis of mandibular gnathobase short and lacking notches at the base of mandibular lash, and (5) inner margin of mandibular lash with denticulate processes. Additionally, maxillar syncoxa carries a large, pointed process on ventral surface, legs 1-4 do not show sexua1 dimorphism, and leg 4 is uniramous with 1-segmented exopod. A detailed discussion is given of its affinities with the ten existing families of the lichomolgoid complex.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2000년도 추계종합학술대회 논문집(4)
• /
• pp.199-202
• /
• 2000

Speaking Rate has variety depends on the situation and habit of speakers. It has been many studied about speaking rate In speaker recognition. The study of speaking rate in speech recognition is one of considerable matter when It is recognized the speakers and it is measured by many speech data base and complicate estimation for accuracy. In this paper, conventional vocoder process the speech signal when encoding and transmitting without regard to speaking rate so in order to apply the speaking rate for vocoder It should be considered the simpler algorithm and less computation amount than the conventional method of speaking rate used In speech recognition. We proposed the speaking rate algorithm which is used the simple parameter with Line Spectrum Pair (LSP). The proposed peaking rate method is measured by the information of LSP in speech. We measured the variety rate of phenomenon about utterances which have different velocity, respectively. As a result, It has distinct variation rate of phenomenon between utterances uttered fast and slow and the rate is 42.8% higher in case of uttered fast than in case of uttered slow.

• Fisheries and Aquatic Sciences
• /
• 제18권3호
• /
• pp.311-316
• /
• 2015

Ten specimens of Brama dussumieri (family Bramidae) were collected from waters off Jeju Island, Busan, and Gangneung, Korea, during 2013-2014. The specimens were characterized by having 58-64 lateral line scales and 13-15 gill rakers. An analysis of 567 base pair sequences of mitochondrial DNA cytochrome c oxidase subunit I showed that sequences in our ten specimens are concordant with those of B. dussumieri from the USA, India, and Japan, although with slight differences (genetic distance = 0.000-0.018). Brama dussumieri was distinguished from the most similar species, Brama japonica, by the number of lateral line scales (57-65 in B. dussumieri vs. 65-75 in B. japonica) and the number of gill rakers (13-15 in B. dussumieri vs. 17-20 in B. japonica). We propose the new Korean name "Wae-sae-da-rae" for B. dussumieri in Korea.

• Animal Systematics, Evolution and Diversity
• /
• 제34권3호
• /
• pp.162-167
• /
• 2018

To confirm the genetic identification and phylogenetic relationships of unidentified 6 baleen whales by-caught from 2002 to 2016, a partial sequence of approximately 500 base pair (bp) of the mitochondrial DNA (mtDNA) control region was analyzed and compared to published sequence from Genbank. Our results indicated that the two individuals among 6 specimens are clustered with Omura's whale clade through phylogenetic analysis, which had only a single haplotype. Omura's whale was reclassified as a new species in 2003 and they had not been previously reported in Korean waters. This study firstly revealed existence of Omura's whale in Korean waters by molecular analysis based on mtDNA control region.

• 한국HCI학회:학술대회논문집
• /
• 한국HCI학회 2008년도 학술대회 1부
• /
• pp.195-199
• /
• 2008

We present an approach to detect real plane for line base recognition and pose estimation Given 3D line segments, we set up reference plane for each line pair and measure the normal distance from the end point to the reference plane. And then, normal distances are measured between remains of line endpoints and reference plane to decide whether these lines are coplanar with respect to the reference plane. After we conduct this coplanarity test, we initiate visibility test using z-buffer value to prune out ambiguous planes from reference planes. We applied this algorithm to real images, and the results are found useful for evidence fusion and probabilistic verification to assist the line based recognition as well as 3D pose estimation.