여대생의 트라우마와 자존감, 가족지지 및 갈등, 우울의 상관관계 연구

경유래,김영서,김주영,박은서,윤예은,이수진,조성온,주서희,황선영,Tsang Lok Yi,김석선,길민지 이화여자대학교 간호과학대학 2019 이화간호학회지 Vol.- No.53

Purpose: Precedent studies about the relationship between trauma and other variables was focused on children and middle aged women. This study however, aims to study the female college student population who are exposed to depression and low self-esteem from traumatic events of childhood and adolescence Methods: Using a descriptive correlation study design, 205 female college students attending female colleges were recruited. The instruments Post-traumatic Diagnostic Scale by Jacoz&Perry(1997), Self-esteem Scale by Rosenberg(1979), Family Support &Conflict Scale by Kim, and Depression Scale by Radloff(1977) were used. The questionnaires were distributed with Google Survey online. The data w re analyzed by average, standard deviation, percentage, and t-test using the SPSS/WIN 21.0 program. Results: The degree of trauma and self-esteem, family support and conflict showed negative correlation, and the degree of trauma and depression showed positive correlation. In other words, female college students with higher trauma tend to have lower self-esteem, more cognizance of family conflict, less feeling of family support, and more depression. Conclusion: This study is different in that it analyzes correlation between the degree of trauma and other variables, not the absence or frequency of trauma. This study is also meaningful as it consider the psychological changes from traumatic experience and provides the basic data for the prevention and therapeutic intervention in clinical field.

여대생의 월경시 불편감과 삶의 질에 대한 연구

김지선,노자민,류진영,오정연,이서주,정미영,조재실,주한별 이화여자대학교 간호과학대학 2011 이화간호학회지 Vol.- No.45

The purpose of this study was to investigate the aspect and degree of female university students' menstruation discomfort and to study how the menstruation discomfort affects their quality of life The subjects consisted of 315 female university students in Seoul City by convenience sampling from July 22 to August 3, 2010. The data was collected by structured questionnaire that included general characteristics, Menstrual Distress Questionnaire and Smith Kline Beecham 'Quality of Life' Scale. To analyze the data, used the following methods: frequency, mean, standard deviation, t-test, ANOVA, Pearson's correlation coefficients with the SPSS program 15.0. The Results as follows: The participants indicated water accumulation, the ache, negative emotion, conduct change and attention intensive obstacle order to show the women's menstrual discomforts and the quality of life was high competent feeling, body and mental stability, vitality and stability order. The correlation of the women's menstrual discomforts and the quality of life was r=-.605 and p=.000, the women's menstrual discomforts and the quality of life show considerably negative correlation. In the event that the women's menstrual discomforts was high comes to be low appeared the quality of life. As a result, this study showed that the women's menstrual discomforts and the quality of life have negative correlation, and discovered various factors which effect to the menstrual discomforts and the quality of life for the women's college students. Thus in the future, do a research for the middle school girls, the maiden and married women, and the repetition research of the women's college student is necessary. The nursing arbitration program development for relaxation of the women's menstrual discomforts is necessary as well.

여자 대학생의 저출산에 대한 인식 : 서울 지역 중심으로

김연주,김주예,김혜,민지유,박현영,이송,이혜심,주연진,최지희,함연화,강숙정,김부연,김윤정 이화여자대학교 간호과학대학 2019 이화간호학회지 Vol.- No.53

Purpose: The purpose of this study is to understand the perception of low birth rate within female college students. Methods: After obtaining approval from online community and several acquaintance, data were collected from August 10 to September 11. A total of eight students participated in the study. Semi-structured in-depth interview were conducted and the data subsequently analyzed. Results: This study extracted three themes: Fragmentary perception about low birth rate limited to social level problem; Avoidance about sacrifice from delivery and Lack of effectiveness in fertility incentives of present government. Conclusion: This study is meaningful that can explore the perception about low birth rates of female college students who are the subjects of future birth. They recognize low birth rates as a social problem, but do not recognize as individual problem. In addition, this study was able to identify the participants' perception of the low birth rate. It can be suggested as meaningful opinion for some follow-up study.

A new RF window designed for high-power operation in an S-band LINAC RF system

Joo, Y.,Kim, S. H.,Hwang, W.,Ryu, J.,Roh, S. 한국물리학회 2016 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol. No.

<P>A new RF window is designed for high-power operation at the Pohang Light Source-II (PLSII) S-band linear accelerator (LINAC) RF system. In order to reduce the strength of the electric field component perpendicular to the ceramic disk, which is commonly known as the main cause of most discharge breakdowns in ceramic disk, we replace the pill-box type cavity in the conventional RF window with an overmoded cavity. The overmoded cavity is coupled with input and output waveguides through dual side-wall coupling irises to reduce the electric field strength at the iris and the number of possible mode competitions. The finite-difference time-domain (FDTD) simulation, CST MWS, was used in the design process. The simulated maximum electric field component perpendicular to the ceramic for the new RF window is reduced by an order of magnitude compared with taht for the conventional RF window, which holds promise for stable high-power operation.</P>

A field application feasibility assessment of naphthoquinone derivatives for the mitigation of freshwater diatom Stephanodiscus blooms

Joo, J. H.,Kang, Y. H.,Park, B. S.,Park, C. S.,Cho, H.,Han, M. S. Springer Science + Business Media 2016 Journal of applied phycology Vol.28 No.3

<P>Although many algicidal substances have been developed, their field application remains a serious challenge due to their high toxicity in the ecosystem and also due to economic reasons. Therefore, we evaluated the claim that naphthoquinone (NQ) derivatives can be used for the efficient mitigation of natural Stephanodiscus hantzschii blooms in freshwater. We tested a total of 23 algicidal NQ compounds to select the best based on the algicidal activity of S. hantzschii species. Among them, NQ 4-6 showed the highest algicidal activities (96 % at a parts per thousand yen0.2 mu M). We conducted an acute toxicity assessment of the new algicide and found that NQ 4-6 had advanced solubility and lower toxicity, as represented by the survival rates of Selenastrum capricornutum, Daphnia magna, and Danio rerio, which are interconnected components of the freshwater ecosystem. None of these organisms seemed to be affected by the highest NQ concentration (2 mu M), indicating a lack of significant toxic effects. These results indicate that the NQ 4-6 compound is promising for use as a selective control agent for S. hantzschii that does not cause negative side effects in the freshwater ecosystem. To evaluate the possibility of field application of NQ 4-6, we first performed microcosm tests. In the microcosm tests (60 L), S. hantzschii was completely eliminated 10 days after inoculation with the NQ 4-6 compound (0.2 mu M). In the microcosm experiments, the dynamics of the biotic (except the phytoplankton) and abiotic factors showed similar trends in the control and treatment groups. Therefore, the NQ 4-6 compound has potential as an alternative algicidal substance to effectively mitigate natural S. hantzschii blooms.</P>

Production of 10-hydroxystearic acid from oleic acid by whole cells of recombinant Escherichia coli containing oleate hydratase from Stenotrophomonas maltophilia

Joo, Y.C.,Seo, E.S.,Kim, Y.S.,Kim, K.R.,Park, J.B.,Oh, D.K. Elsevier Science Publishers 2012 Journal of biotechnology Vol.158 No.1

A putative fatty acid hydratase from Stenotrophomonas maltophilia was cloned and expressed in Escherichia coli. The recombinant enzyme showed the highest hydration activity for oleic acid among the fatty acids tested, indicating that the enzyme is an oleate hydratase. The optimal conditions for the production of 10-hydroxystearic acid from oleic acid using whole cells of recombinant E. coli containing the oleate hydratase were pH 6.5, 35<SUP>o</SUP>C, 0.05% (w/v) Tween 40, 10gl<SUP>-1</SUP> cells, and 50gl<SUP>-1</SUP> oleic acid. Under these conditions, whole recombinant cells produced 49gl<SUP>-1</SUP> 10-hydroxystearic acid for 4h, with a conversion yield of 98% (w/w), a volumetric productivity of 12.3gl<SUP>-1</SUP>h<SUP>-1</SUP>, and a specific productivity of 1.23gg-cells<SUP>-1</SUP>h<SUP>-1</SUP>, which were 18%, 2.5-, and 2.5-fold higher than those of whole wild-type S. maltophilia cells, respectively. This is the first report of 10-hydroxystearic acid production using recombinant cells and the concentration and productivity are the highest reported thus far among cells.

단일반응기를 이용한 생물학적 질소·인제거 특성

주충렬,최용수,김송기,이영대,윤현식,신응배 漢陽大學校 環境工學硏究所 1998 環境科學論文集 Vol.19 No.-

문헌 및 자료조사와 Bench-scale 및 Pilot-plant 실험을 통하여 개발된 Anaerobic zone, Anoxic zone, Aerobic zone과 Clarifier가 단일반응조내에 포함되어 있는 실규모의 생물학적 영양 성분제거 공정인 Single sludge reactor를 이용하여 유기물, 질소 및 인제거 특성을 평가하였다. Single sludge reactor의 실험결과를 종합하면, COD, T-N과 T-P 제거효율은 각각 89∼95%, 74∼85%, 64∼82%로 기존의 A²/O, Five-Stage Bardenpho, MUCT, VIP 공정의 일반적 영양성분 제거효율 60∼90%와 비교해 보아도 손색이 없을 정도의 제거율을 보여 Single sludge reactor는 유기물 제거 및 탈질·탈인이 모두 우수한 공정으로 평가할 수 있을 것으로 판단된다. 또한, SVI와 유출수의 SS를 이용한 침강특성 평가실험에서 SVI는 전 실험과정중 평균 85.3mL/g를 유지하여 슬러지의 침강성이 우수함을 보여주었으며, 유출수의 SS도 5.3∼12.9㎎/L의 범위를 유지하여 매우 양호한 상태를 나타냈다. Single sludge reactor는 Anaerobic zone, Anoxic zone, Aerobic zone과 Clarifier가 단일반응조에 포함되어 있기 때문에 처리장의 부지 문제 해소에 도움을 줄 수 있고 공정이 단순하여 유지관리가 용이하므로 경제성이 뛰어날 것으로 예상된다. 또한, Single sludge reactor는 대규모 오폐수 고도처리시설의 설치가 곤란한 중소규모의 집락거주지나 상수원 주변에 산재해 있는 소규모 시설에 적용할 경우 발생원에서 오폐수 고도처리가 가능하여 상수원의 부영양화를 저감시킬 수 있을 것으로 판단된다. In this investigation, a new biological process in a full-scale single sludge reactor containing combined anaerobic-anoxic-aerobic zones and a clarifier was tested to estimated for nitrogen and phosphorus removal. From these results, the calculated removal efficiencies for COD, T-N and T-P were 89∼95%, 74∼85% and 64∼82%, respectively. These results indicate that this process can ensure nutrients removal when compared to conventional BNR processes(i.e.A²/O, Five-Stage Bardenpho, MUCT, VIP). The SVI average values for all experiments from 85.3mL/g. The effluent SS values in all experiments were less than 10㎎/L. Therefore, those surmise that the SVI and SS values mentioned above may give rise to good sludge settleability results. The proposed process does not separate the anaerobic, anoxic, and aerobic zones, thus contributing together with the reduced total site space, to substantially reducing the investment costs for wastewater treatment plants. Therefore, when single sludge reactor will be adopted for wastewater treatment in small communities, it may serve as one of the potential means to reduces nutrients discharged into the receiving water bodies.

Immunochemical and Biological Analysis of Allergenicity with Excretory-Secretory Products of <i>Anisakis simplex</i> Third Stage Larva

Kim, J.S.,Kim, K.H.,Cho, S.,Park, H.Y.,Cho, S.W.,Kim, Y.T.,Joo, K.H.,Lee, J.S. S. Karger AG 2005 International archives of allergy and immunology Vol.136 No.4

<P><I>Background:</I><I>Anisakis simplex</I> third stage larvae (L3) are parasites that frequently give rise to allergic responses. The larvae molt into fourth stage larvae (L4), and at each stage they produce L3-excretory-secretory products (L3-ESP) and L4-ESP, respectively, which are different in their main protein constituents. Although the allergenicity of L4-ESP has been investigated by several research groups, research on the allergenicity of L3-ESP has not been carried out by any researcher. In this investigation, the allergenicity and antigenicity of L3-ESP were investigated in comparison with L4-ESP, using rat sera. <I>Methods:</I> Rat sera were produced by L3 oral infection two times with a 9-week interval. Larvae ESP prepared by culture were concentrated and fractioned using lyophilizer and a centrifugal filter device, respectively. Immunochemical analysis was performed using both indirect ELISA and immunoblot. Biological allergenicity was analyzed by RBL-2H3 exocytosis. <I>Results:</I> With the indirect ELISA, the optical density (OD) value of the nonfractioned (NF)-L3ESP was only one third of that of the NF-L4ESP in both specific IgM and IgG. On measuring specific IgE, the OD of NF-L3ESP was less than one tenth of that of NF-L4ESP. In addition, neither antigen nor allergen was shown in NF-L3ESP, but it was shown in NF-L4ESP with immunoblot. However, the biological allergenicity of NF-L3ESP was comparable to that of NF-L4ESP. To demonstrate the presence of any allergen, L3-ESP was fractioned and found to carry twelve visualized allergen bands from 10 to 186 kDa by immunoblot. <I>Conclusions:</I> These results indicate that L3-ESP may include the important allergens necessary to induce the allergy by L3 oral infection, as compared to L4-ESP.</P><P>Copyright © 2005 S. Karger AG, Basel</P>

Small phytoplankton contribution to the total primary production in the highly productive Ulleung Basin in the East/Japan Sea

Joo, H.,Son, S.,Park, J.W.,Kang, J.J.,Jeong, J.Y.,Kwon, J.I.,Kang, C.K.,Lee, S.H. Pergamon Press 2017 Deep-sea research. Part II, Topical studies in oce Vol.143 No.-

The Ulleung Basin in the southwestern East/Japan Sea (hereafter East Sea) is known as a biologically productive ''hot spot'' but climate-associated changes in the physicochemical oceanographic conditions and some biological changes have been reported. In this study, our main objective was to determine the contribution of small phytoplankton to the total primary production, which is valuable information for detecting marine ecosystem changes in the Ulleung Basin. The small phytoplankton productivity contributions determined by Moderate-Resolution Imaging Spectroradiometer (MODIS)-derived monthly productivities using a phytoplankton community-based productivity algorithm was significantly consistent with the field-measured productivity contributions of small phytoplankton in this study. The daily primary productivity of small phytoplankton ranged from 42.7 to 418.7mgCm<SUP>-2</SUP>d<SUP>-1</SUP> with an average of 172.9mgCm<SUP>-2</SUP>d<SUP>-1</SUP> (S.D. = +/-61.4mgC m<SUP>-2</SUP> d<SUP>-1</SUP>, n = 120), and the annual contribution of small phytoplankton ranged from 19.6% to 28.4% with an average of 23.6% (S.D. = +/-8.1%) in the Ulleung Basin from 2003 to 2012. Overall, large phytoplankton were a major contributor to the total primary production in the Ulleung Basin (76.4 +/- 8.2%) from 2003 to 2012, which indicates that the Ulleung Basin is a highly productive region. A significantly negative relationship (p < 0.05) was found between the small phytoplankton primary productivity contribution and the annual primary production in this study. This finding revealed that the recent decreasing annual primary production in the Ulleung Basin could be a consequence of the increasing contribution of small phytoplankton. The response of phytoplankton to ongoing climate change depending on different-size phytoplankton compositions should be a subject for further investigation in the Ulleung Basin as a biologically highly productive region in the East Sea.

냉수처치가 흰쥐의 화상조직에 미치는 영향

마흥수,함기선,주상용,박경희,안용팔 大韓成形外科學會 1982 Archives of Plastic Surgery Vol.9 No.1

Lewis(1930) & Langohr (1949) suggested that cold water therapy (CWT) reduces tissue metabolism, oxygen debt and dilates minute vessels, therefore increasing blood flow, on the burned tissue in rats. So this method diminishes tissue damage due to impaired circulation and may retard the development of infection. These experiments were performed to study the effects of CWT on the burned tissue in rats. Full thickness scald burns(‘80c’10sec)were inflicted on the backs of the 42 rats. Burned rats were divided into 2 groups: 27 rate as an experimental group (immediate and delayed CWT) and 15 rats as an untreated control. The untreated control was sacrificed on the 1/2th, 1st, 8th, 24th and 72th hour after burn. Immediate CWT group was immersed immediately into the cold water (1-2℃, 10min) after burn and sacrificed as same as the time of untreated control. Delayed CWT group was burned and CWT was performed after 5 min, 10min and 30 min delay. They were sacrificed on the 24th hour after burn. The specimens taken from all experimental animals were fixed in 10% neutral formalin embedded in paraffin wax, sectioned at a thickness of 5um, and stained with hematoxylineosin for general histologic findings. Observation was made of morphological changes in the collagen fibers, capillaries and separations between collagen fibers located in the skin of rats. The results were as follows: 1. The tissue injury of immediate CWT group was less severe than untreated control. 2. The more CWT is delayed, the more tissue injury is aggravated. So immediate CWT is the most effective modality in the CWT of bumed tissue.