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Phylogenetic Contributions of Partial 26S rDNA Sequences to the Tribe Helleboreae (Ranunculaceae)
Ro, Kyung-Eui,Han, Ho-Yeon,Lee, Sang-Tae The Korean Society for Integrative Biology 1999 Korean journal of biological sciences Vol.3 No.1
Monophyly and intergeneric relationships of the tribe Helleboreae, sensu Tamura, and related genera were studied using a 1,100-bp segment at the 5'end of the 26S ribosomal RNA gene. Forty-one OTUs, including eight species of the Helleboreae, were either directly sequenced or obtained from previous publications. Data were analyzed using distance and discrete character methods to infer phylogenetic relationships among the included taxa. The inferred phylogeny did not support monophyly of either Helleboreae or Cimicifugeae whose members were intermixed in our inferred phylogeny. This result is congruent with our previous study, which recommended against finely subdividing, suprageneric higher taxa within the R-chromosome group (subfamily Ranuncluloideae, sensu lato) until more molecular data were accumulated. Our data convincingly suggest the presence of the following three monophyletic groups: the Cimicifuga group (the clade of Actaea, Cimicifuga, Souliea, Eranthis, Anemonopsis, and Beesia), the Trollius group (the clade of Trollius, Megaleranthis, Adonis), and a clade including Anemonopsis and Beesia. Our data also suggest that Trollius and Megaleranthis might be congeners and Eranthis a paraphyletic group.
Ho-Yeon Han,Kyung-Eui Ro 한국응용곤충학회 2011 한국응용곤충학회 학술대회논문집 Vol.2011 No.05
The superfamily Tephritoidea is a large group of acalyptrate flies including over 7,300 described species arranged in nine families. All the tephritoid families excluding Richardiidae are represented in Korea, but their taxonomy has not been well studied. For example, a total of 80 species of the family Tephritidae are currently known in Korea, but our personal data shows that there actually are at least 150 species. Presence of highly variable or cryptic species has been hampering taxonomic progress involving this group of flies. Some genera such as Trypeta, Campiglossa, Oxyna, and Tephritis are good examples of taxonomically difficult taxa. We find that DNA barcoding is extremely helpful to clarify such taxonomic problems. We are currently trying to bacode multiple samples for every single Korean tephritoid species. A total of 271 specimens representing 185 species have been barcoded so far. Neighbor-Joining analysis of our preliminary data shows many interesting findings that are potentially useful to resolve long standing taxonomic problems. The followings are some of our findings through the DNA barcoding analyses: 1) multiple samples for each included species were almost always clustered together showing utility for specific identification; 2) multiple species per each genus were mostly clustered together; 3) clarification of male and female association of two closely resembling new Acidiella species; 4) strongly support synonymy of Sinacidia and Chetostoma; 5) possible existence of two cryptic species within Campiglossa defasciata; 6) possible synonymy of Dioxyna and Campiglossa; 7) possible synonymy of Herina zojae and H. hennigi; and 8) discrimination of two closely resembling Chaetostomella species.
Lee, Eui Tai,Park, Hyun Min,Lee, Dong Geun,Shin, Kyung Jin,Kim, Hak Soon,Sung, Ro Hyun,Ryu, Dong Hee Korean Society of Plastic and Reconstructive Surge 2012 Archives of Plastic Surgery Vol.39 No.5
Endometriosis is defined as the presence of functioning endometrial tissue outside the uterine cavity, and the standard treatment is extensive surgical excision. Cesarean scar endometriosis is a type of cutaneous endometriosis arising on or near a Cesarean section scar. A 44-year-old woman presented with a $9{\times}6$ cm sized dark-brown, stony-hard, irregular, lower abdominal mass of four years duration. The patient had a history of two Cesarean deliveries, 14 and 16 years ago. Suspecting endometriosis, we excised the tumor conservatively rather than extensively to prevent incisional hernia considering the benign nature of the tumor and the low possibility of recurrence because the patient's age was near menopause, along with simultaneous bilateral salpingo-oophorectomy that was performed in this case. On reconstruction, mini-abdominoplasty was adopted to avoid possible wound complications and cosmetic deformities. The patient was satisfied with the cosmetic results, and neither recurrence nor functional problems occurred during the 1-year follow-up period. Plastic surgeons should keep in mind the possibility of cutaneous endometriosis in an abdominal mass of a female of reproductive age with a previous history of pelvic or intra-abdominal surgery. An optimal result from oncological, functional, and cosmetic standpoints can be achieved with conservative excision followed by mini-abdominoplasty of extensive Cesarean scar endometriosis.
Solid Phase Crystallization Kinetics of Amorphous Silicon at High Temperatures
Won-Eui Hong,Bo-Kyung Kim,Jae-Sang Ro 한국표면공학회 2008 한국표면공학회지 Vol.41 No.2
Solid phase crystallization (SPC) of amorphous silicon is usually conducted at around 600°C since it is used In the application of flat panel display using thermally susceptible glass substrate. In this study we conducted SPC experiments at temperatures higher than 600°C using silicon wafers. Crystallization rate becomes dramatically rapid at higher temperatures since SPC kinetics is controlled by nucleation with high value of activation energy. We report SPC kinetics of high temperatures compared to that of low temperatures.
Olanzapine(Zyprexa®) Tablet의 Powder 조제시 안정성
홍영의,조은경,김재연,조영환,노환성 한국병원약사회 2000 병원약사회지 Vol.17 No.1
Olanzapine (Zyprexa®) is the new generation of neuroleptic drug which is structurally similar to clozapine. Manufacturer recommends that olanzapine should be stored at room temperature away from light and moisture because it is unstable. However we are preparing the powder and the 1/2 tablet of olanzapine and prescribing for the patients incapable of taking a tablet. So we studied the stability of the powder and the 1/2 tablet of olanzapine to evaluate the pertinence of preparing the powder of olanzapine and to establish the term of validity of the powder of olanzapine. We checked the contents of olanzapine in PTP, 1/2 tablet package, powder package for 28 days by HPLC assay. As a result of these studies, the contents of olanzapine had been maintained with 92~103% in all packages for 28 days regardless of light and the form of preparing. In conclusion, the powder and the 1/2 tablet of olanzapine was stable for 28 days and preparing the powder of olanzapine was pertinent. So we can prescribe the powder of olanzapine for inpatients but also for outpatients until 28 days.
이광의(Kwang-Eui Lee),노철우(Cheul-Woo Ro),김경민(Kyung-Min Kim) 한국콘텐츠학회 2009 한국콘텐츠학회논문지 Vol.9 No.7
인지 라디오(Cognitive Radio: CR) 기술은 우선 사용자와 CR 사용자가 무선 자원을 공유하여 무선 자원의 효율을 증가시킬 수 있는 기술이다. 본 논문에서는 셀에서의 채널사용에 대한 부분정보만이 CR 사용자에게 알려져 있음을 가정하고 채널 할당 모델을 설계한다. 모델은 우선 사용자가 CR 사용자에 의하여 간섭받지 않도록 설계하였으며, CR사용자의 채널 재획득과정을 포함한다. 설계된 인지 라디오에서의 채널 할당 모델을 분석하기 위하여 이에 대한 페트리 네트 모델을 개발하였으며 성능분석을 수행 한다. 성능지표로는 우선사용자 채널 점유율 변화에 따른 CR 사용자의 호 분실률과 처리율을 계산한다. Cognitive Radios are encouraging solutions to improve the utilization of the radio spectrum In this paper, we propose channel allocation model for cognitive radio and analyse the performance of the model with Petri Nets. We design the model with an assumption that only partial information about current channel allocation information is known to CR users. The model is designed to communicate efficiently avoiding interference with primary and CR users and contains channel reobtaining process of CR users. The dropping rate and throughput of CR users under the various channel utilization of primary users are given as performance index.