• Mycobiology
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• 제48권6호
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• pp.528-531
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• 2020

Scopulariopsis brevicaulis is a widely distributed soil fungus known as a common saprotroph of biodegradation. It is also an opportunistic human pathogen that can produce various secondary metabolites. Here, we report the first complete mitochondrial genome sequence of S. brevicaulis isolated from air in South Korea. Total length of the mitochondrial genome is 28,829 bp and encoded 42 genes (15 protein-coding genes, 2 rRNAs, and 25 tRNAs). Nucleotide sequence of coding region takes over 26.2%, and overall GC content is 27.6%. Phylogenetic trees present that S. brevicaulis is clustered with Lomentospora prolificans with presenting various mitochondrial genome length.

• Journal of Species Research
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• 제12권4호
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• pp.313-320
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• 2023

Diatoms are unicellular eukaryotic microalgae, and they are highly diversified in aquatic environments. We describe an unrecorded diatom species Fragilaria saxoplanctonica Lange-Bertalot & Ulrich (Bacillariophyceae) collected from Paldang Reservoir, Korea, on 4 April 2022. The valve was needle shaped and narrowly rectangular, its ends were rounded, and no spines were found on the outline of their valves. The valve was 67.2-70.2㎛ in length and 1.4-2.9㎛ in width. The ratio of width-to-length was 1 : 23.2-50.1. The pattern of striation was alternate or opposite, and the number of striae in 10㎛ was 24-26. Molecular comparisons of the 18S rDNA and rbcL sequences showed that it belonged to the genus Fragilaria. These morphological and phylogenetic results confirmed that our species was F. saxoplanctonica, and it was the first record in Korea.

• 한국임상보건과학회지
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• 제8권1호
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• pp.1386-1397
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• 2020

Purpose: To examine the effectiveness of various treatments; bifocal spectacles, orthokeratology, atropine, and time spent in outdoors; in slowing down the myopia progression for Asian adolescents (6-18age). Methods: The research focused on examining the most effective treatment in controlling myopia based on the literature sources that have been published. Through meta-analysis of various research papers that already has been done in this field, a lot of data was collected. For each treatment, the difference in axial length and spherical equivalent over time was measured and recorded. To quantitatively record the difference, both axial length and spherical equivalent was determined by value of control group value of treatment group. The paper compared the effectiveness of each treatment based on the data that was measured. Results: Adolescents who chose to spend time outdoors in order to slow down myopia progression had axial length difference of 0.03 mm and spherical equivalent difference of 0.17 D. Adolescents that used atropine had axial length difference of 0.36 mm and spherical equivalent difference of 0.92 D. Bifocal spectacle resulted in axial length difference of 0.21 mm and spherical equivalent difference of 0.59 D, and for orthokeratology 0.23 mm and 0.04 D, respectively. Axial length wise, myopia was most controlled by the atropine since there was a greatest difference between the group that got the treatment and the group that did not have the treatment. According to the spherical equivalent difference data, myopia was most controlled by atropine. Conclusion: Atropine showed the most effective result in controlling myopia among the four treatment. Again, compared to other three treatment, using atropine appeared to have greatest ability in slowing down myopia progression since adolescents who were treated with atropine had greatest difference from adolescents in the control group that had the same condition but didn't get the treatment. However, every treatment was only used for 2 or 3 years which is quite short time period to measure the long term effect of the four treatments. Also, since atropine is a pharmaceutical method to control myopia, it may harm adolescents' eyes compared to optical or environmental treatment.

• 한국어류학회지
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• 제32권1호
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• pp.21-25
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• 2020

곰치과에 속하는 Strophidon sathete 1개체(전장 1,302 mm)가 2019년 4월 제주도 남방 해역에서 외끌이 기선저인망으로 처음 채집되었다. 이 종의 특징은 무늬가 없고, 몸이 가늘며, 주둥이 약간 둥근 형태를 띠며, 3개의 안상골공(superorbital pores), 4개의 안하골공(infraobital pores), 그리고 6개의 하악골공(mandibular pores)을 갖는다. 형태적으로 가지굴(Gymnothorax albimarginatus)과 유사하지만 등지느러미와 뒷지느러미가 전체적으로 어둡고(vs. 말단에 하얀색을 띰), 전장에 대해 체고비율이 1.8~3.1% (vs. 3.2~5.7%), 그리고 전장이 50~70 cm보다 작을 때 반문이 없는 것(vs. 반문이 있음)으로 구분할 수 있다. 따라서 몸의 굵기가 유사종에 비해 상대적으로 가는 형태적 특징에 근거해서 이 미기록종의 국명을 "가는곰치"로 제안한다.

• 한국수자원학회논문집
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• 제40권8호
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• pp.629-641
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• 2007

본 연구에서는 우리나라 최대 도시인 서울지점에서의 도시화의 영향을 강우자료의 분석을 통해 파악하였다. 서울지점 강우의 도시화 영향을 파악하기 위해 관측길이가 길고 도시화의 정도가 상대적으로 덜한 전주지점과 관측 기록의 길이는 짧으나 서울 인근지점으로 도시화의 영향이 매우 적을 것으로 판단되는 이천지점의 강우자료를 비교 대상으로 이용하였다. 또한 도시화의 영향에 해당하는 서울지점과 전주지점의 강우량 차이를 간섭모형을 이용하여 정량화 하였다. 그 결과, 연최대치 호우사상의 최대강우강도는 점점 증가하는 추세이며, 총지속시간의 경우는 전체기간에 대해 감소하는 경향이고, 특히 1960년 이후에는 그 평균이 과거보다 현저히 감소하는 추세임을 확인할 수 있었다. 아울러 간섭분석을 통해 1960년 이후의 도시화가 강우에 미친 영향을 정량화한 결과 도시화에 의한 강우강도 및 강우량의 증가 양상이 지속되고 있음을 확인하였다.

• 한국어류학회지
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• 제32권3호
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• pp.191-196
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• 2020

곰치과에 속하는 Strophidon dorsalis 1개체 (전장 1,254 mm)가 2018년 7월 우리나라 남해안의 진도연안에서 연안통발로 처음 채집되었다. 이 종의 특징은 몸에 무늬가 없고, 주둥이가 약간 둥근 형태를 띠며, 2개의 안상골공 (superorbital pores), 3개의 안하골공 (infraorbital pores), 그리고 6개의 하악골공 (mandibular pores)을 갖는 다. 이 종은 형태적으로 가는곰치 (Strophidon sathete)와 유사하지만 안하골공이 3개이며 (vs. 가는곰치는 4개), 마지막의 안하골공은 눈의 앞부분에 위치하며 (vs. 안하골공이 눈의 뒷부분에 위치), 전장에 대해 체고비율이 3.2~4.1%(vs. 1.8~3.1%), 그리고 척추골수가 154~167개 (vs. 188~200)로 구분할 수 있다. 이 어종의 국명은 '서망곰치'로 제안한다.

• Journal of Acupuncture Research
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• 제21권1호
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• pp.99-110
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• 2004

Objective: The purpose of this study was to examine the different effects on labor pain, length of delivery time, and hemoglobin for primipara women treated by San-Yin-Jiao(SP-6) acupressure of 15 minutes or 30 minutes. Methods: The design of this study was a randomized clinical trial with two experimental groups and one control group, the participants included primiparas who underwent vaginal delivery. Data were collected using a structured questionnaire consisting of general characteristics with a subjective labor pain scale with VA.S, and length of delivery time and hemoglobin were collected in the medical record. Data was analyzed using descriptive statistics, x2- test, t-test, and ANCOVA. Results: There was statistically significant lower labor pain in the group of 30 minutes SP6 acupressure than the control group(t=7.733, p=.007), and there was statistically significant short length of delivery time in the group of 15 minutes SP6 acupressure than the control group(t=-2.230, p=.030). Conclusions: Even though we could not found a consistent effect with the SP6 acupressure, It was found that there was effect on shortening length of delivery time by 15 minutes of SP6 acupressure or lessening labor pain by 30 minutes of SP6 acupressure without risk of blood loss. It is necessary to replicate the study with a larger number of participants to find a consistent result.

• 한국융합학회논문지
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• 제8권5호
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• pp.87-96
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• 2017

이 연구는 퇴원손상심층조사 자료를 이용해 손상 및 외상 사망환자의 재원일수 특성을 분석하여 손상 및 외상으로 인한 사망 예방을 위한 기초 자료 제공을 목적으로 시행되었다. 조사대상은 퇴원손상심층조사 자료에서 2014년 1월 1일부터 12월 31일까지 퇴원한 환자 중, 치료결과가 '사망'이며, 주진단이 손상 및 사고의 외인(S00-T98)인 환자 233명이었다. 연구결과, 여자의 재원일수가 남자보다 길었다. 주진단은 기타 내부 인공삽입장치, 삽입물 및 이식편의 합병증(T85)에서 재원일수가 가장 길었다. 이상의 연구결과로 볼 때 손상으로 인한 사망 재원일수 영향 요인을 파악하여 이들을 집중적으로 관리하기 위한 정책개발이 필요한 것으로 판단된다.

• Wind and Structures
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• 제19권5호
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• pp.505-522
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• 2014

While effects of the atmospheric boundary layer flow on engineering infrastructure are more or less known, some local transient winds create difficulties for structures, traffic and human activities. Hence, further research is required to fully elucidate flow characteristics of some of those very unique local winds. In this study, important characteristics of observed vertical velocity profiles along the main wind direction for the gusty Bora wind blowing along the eastern Adriatic coast are presented. Commonly used empirical power-law and the logarithmic-law profiles are compared against unique 3-level high-frequency Bora measurements. The experimental data agree well with the power-law and logarithmic-law approximations. An interesting feature observed is a decrease in the power-law exponent and aerodynamic surface roughness length, and an increase in friction velocity with increasing Bora wind velocity. This indicates an urban-like velocity profile for smaller wind velocities and rural-like velocity profile for larger wind velocities, which is due to a stronger increase in absolute velocity at each of the heights observed as compared to the respective velocity gradient (difference in average velocity among two different heights). The trends observed are similar during both the day and night. The thermal stratification is near neutral due to a strong mechanical mixing. The differences in aerodynamic surface roughness length are negligible for different time averaging periods when using the median. For the friction velocity, the arithmetic mean proved to be independent of the time record length, while for the power-law exponent both the arithmetic mean and the median are not influenced by the time averaging period. Another issue is a large difference in aerodynamic surface roughness length when calculating using the arithmetic mean and the median. This indicates that the more robust median is a more suitable parameter to determine the aerodynamic surface roughness length than the arithmetic mean value. Variations in velocity profiles at the same site during different wind periods are interesting because, in the engineering community, it has been commonly accepted that the aerodynamic characteristics at a particular site remain the same during various wind regimes.

• 한국운동역학회지
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• 제27권1호
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• pp.75-81
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• 2017

Objective: The purpose of this study was to compare and analyze the kinematic variables and electromyography (EMG) findings that change with varying characteristics of crouch start and feedback provision, and to provide the fundamental data for record improvement in 400 mH. Method: Four short-distance runners participated in the experiment. The analyzed variables were elapsed time per interval, stride length, and muscle activities in three lower limb muscles. These variables were analyzed by using Kwon3d XP and Noraxon Myoresearch. The participants were subjected to three conditions, including two conditions that relate to the thrusting foot on the rear block and another condition pertinent to feedback provision. Results: In terms of a one-step interval, the elapsed time in condition A was longer than that in condition B, and the one after the feedback was the longest. The stride length of a one-step interval was the longest in condition A. The stride length of a two-step interval was the shortest in condition A. The muscle activity during a one-step interval showed differences in vastus medialis and medial gastrocnemius, with condition A being the highest. Conclusion: When the non-dominant left foot was located at the back, negative results were observed in terms of elapsed time and stride length. Moreover, an imbalance in muscle activity was observed between the left and right feet when the left foot was placed at the back. As a result, significant differences in elapsed time, stride length, and muscle activity were observed depending on the foot placed on the rear block. In conclusion, we identified the characteristics of crouch start in 400 mH, and a specialized program must be suggested.