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>

Antimicrobial Susceptibility of Coagulase-Negative Staphylococci Isolated from Bovine Mastitis Between 2003 and 2008 in Korea

( J. M. Kim ),( S. K. Lim ),( J. S. Moon ),( Nam H. M. ),( H. M. Kang ),( G. C. Jang ),( S. H. Wee ),( Y. S. Joo ),( S. C. Jung ) 한국미생물 · 생명공학회 2010 Journal of microbiology and biotechnology Vol.20 No.10

A total of 1,444 coagulase-negative staphylococci (CNS) isolates from bovine mastitic milk samples collected during 2003-2008 in Korea were identified to the species level. Of 14 species identified, S. simulans, S. haemolyticus, and S. sciuri accounted for over 60% of the isolates. All the CNS isolates were tested for susceptibility to eight antimicrobials commonly used in dairy cattle. With a few exceptions, similar resistance patterns were observed among the CNS species: penicillin and ampicillin showed the lowest activity, whereas amikacin, cephalothin, and gentamicin were highly effective. About 39% (557/1,444) of the CNS isolates were pan-susceptible, whereas 12% (175/1,444) showed resistance to four or more antimicrobials tested.

RAPD PCR와 ITS-RFLP 분석에 의한 국내 피부진균속 분류 및 동정

이영선,유재일,최연화,주형렬,박만석,김봉수 국립보건연구원 1998 국립보건원보 Vol.35 No.-

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.

High lipid composition of particulate organic matter in the northern Chukchi Sea, 2011

Kim, B.K.,Lee, J.H.,Yun, M.S.,Joo, H.,Song, H.J.,Yang, E.J.,Chung, K.H.,Kang, S.H.,Lee, S.H. Pergamon Press 2015 Deep-sea research. Part II, Topical studies in oce Vol.120 No.-

We investigated the biochemical compositions (lipids, proteins, and carbohydrates) of particulate organic matter (POM) as a potential food source in the northern Chukchi Sea. We aimed to understand physiological status of phytoplankton, determine important controlling factors, and estimate the energetic contents of POM. The major inorganic nutrients were generally depleted at upper mixed-layer depth (>20m). The average chlorophyll a (chl-a) concentration was 31.9mgm<SUP>-2</SUP> (S.D.=+/-31.3mgm<SUP>-2</SUP>) in this study, significantly higher than that reported previously in the northern Chukchi Sea. Small phytoplankton (0.7-5@?m) accounted for 65.9% of total chl-a concentration. The overall average compositions of lipids, carbohydrates, and proteins were 50% (S.D.=+/-10.7%), 35% (S.D.=+/-11.0%), and 15% (S.D.=+/-11.2%) for POM, respectively. Along with other evidence (e.g., low N:P and protein-carbohydrate ratios), the high lipid and low protein compositions of POM in this study suggests that phytoplankton might have had a nitrogen limitation and/or stationary growth phase in the northern Chukchi Sea during the cruise period, 2011. The overall average calorific content of food material (FM) was 149.2μgL<SUP>-1</SUP> (S.D.=+/-36.5μgL<SUP>-1</SUP>) or 1.0Kcalm<SUP>-3</SUP> (S.D.=+/-0.2Kcalm<SUP>-3</SUP>). The relatively higher calorific contents in the northern Chukchi Sea were due to high lipid contributions and the considerably high calorific content of FM per POC.

간호 대학생의 성 지식, 성 태도와 성 건강 간호 장애감 간의 관계

김다연,김은아,노수경,류아인,박나은,박지혜,서정민,심효정,주성민,한진실,이건정,박수민 이화여자대학교 간호과학대학 2017 이화간호학회지 Vol.- No.51

Purpose: The purpose of this study was to investigate correlation among sexual knowledge, attitude and Barriers to patient’s sexual health of nursing undergraduate students and to provide objective data to promote sexual health-care. Method: Using a descriptive correlation, 304 nursing undergraduate students were recruited through convenience random sampling from August 1st to December 20th, 2016. Data were analyzed using average, standard deviation, percentage, t-test, ANOVA, Scheffe test, Pearson’s correlation and Multiple linear regression analysis using the SPSS 21.0 program. Results: The correlation between Sexual knowledge and Sexual attitude is statistically significant(r=.289, p<.01). As the level of sexual knowledge is higher, the sexual attitude is more open. And, Sexual knowledge(r=-.307,p<.01) and Sexual attitude(r=.180,p=.002) had a negative relationship with Barriers to patient’s sexual health. Also, Sexual knowledge was the greatest influencing factor on Barriers to patient’s sexual health. Conclusion: This study showed as the level of Sexual knowledge is higher, the Sexual attitude is more open. As the degree of Sexual knowledge is lower, the Sexual attitude is more conservative, and Barriers to patient’s sexual health is more higher. Also, Sexual knowledge is the most influential factor on Barriers to patient’s sexual health.

子宮內 沃度丁幾 注入의 實驗的 硏究

周明植,李壽鍾 우석대학교 의과대학 1968 우석의대잡지 Vol.5 No.1

Though various contraceptive devices such as Hall’s stainless ring, Ota's Plastic ring, Zipper's nylon ring, Birnberg's bow, Margulies' spiral loop, Lippe's loop and some older measures including the diaphragm-jelly and rythm methods have so far been employed, there is still no one satisfactory contraceptive. Some of these measures have been used off and on from the earliest days. Nowadays, we know much about mechanisms of contraception, but much remains yet to be clarified. This author made observations of the histological changes in the rabbit endometrium induced by an intracavitary instillation of iodine tincture which is employed as a method of contraception, and he attempted to evaluate the mechanism of contraceptive action and its effectiveness. The results obtained are summarized as follows: 1. With an instillation of 2% iodine tincture into a uterine cavity, degenerative changes severely occurred on the first day. becoming worse on the third day, and began to decrease in its severity on the fifth day. The regenerative changes then took place and the uterus resumed its normal state on the seventh day. PAS-reaction(staining with Schiff's reagent by periodic acid oxidation) increased on the first day, prominent on the 3rd day, and returned to the almost same level as in the normal uterus on the 5th day and to normal on the 7th day. The activity of alkaline phosphatase of the endometrium decreased on the first day, falling to the lowest level on the 3rd day, and then gradually returned to the almost normal level on the 5th day. 2. With an instillation of 1.5% iodine tincture into a uterine cavity, the degenerative changes remarkably occurred in the endometrium on the first day, prominent on the 3rd day, then markedly subsided on the 5th day and the uterus resumed its normal state on the 7th day. PAS-reaction increased on the first day, more prominent on the 3rd day and returned to the level of the controls on the 5th day. Alkaline phosphatase in the endometrium decreased on the first day, to the lowest level on the 3rd day, then returned to the normal state on the 5th day. 3. The histological findings of the uterus treated with 1% iodine tincture revealed the most prominent degenerative changes mainly in the endometrium on the 3rd day and returned to the normal level on the 5th day. PAS-reaction increased on the 3rd day and returned to the normal level on the 5th day. The activity of alkaline phosphatase of the uterus decreased remarkably on the first day, and then recovered itself to the almost normal state on the 3rd day. 4. With an instillation of 0.5% iodine tincture into a uterine cavity, the degenerative changes confined to the endometrium most notably occurred on the first day. The pathological changes remarkably subsided on the 3rd day and returned to a normal state on the 5th day. PAS-reaction was most prominent on the first day, and then returned to a normal level on the 3rd day. The activity of alkaline phosphatase of the uterus most remarkably decreased on the first day and recovered to the almost normal level on the 3rd day, and then resumed its norma state on the 5th day. This author's conclusion of this work is that application of iodine tincture into the uterine cavity can effectively be used as a contraceptive measure.

직각도 측정을 위한 CT법 적용의 유효성에 관한 연구

주만식,박범식,김민주,이승수,전언찬 동아대학교 교육대학원 2000 동아교육논총 Vol.26 No.-

This study for the perpendicularity of machining center is classified the way that measures the perpendicularity by remodeling the existing measuring device. This kind of study is studied by pack hei jae team in Weoul university and by TSUTSUMI. Especially TSUTSUMI measures the roundness according to circular compensation after the insertion of developed measuring device using a rotary encoder to the spindle of machining tool. We study how regulation velocity occuring with circular motion of machining center table influences the perpendicularity after measuring the perpendicularity using Circular Test method by a 2 dimention probe and a square in this experiment.

항만용 AGV 서스펜션의 스프링 상수와 감쇠계수의 변화에 따른 진동 모드에 관한 연구

주만식,김민주,이승수,김중완,전언찬 동아대학교 생산기술연구소 2001 生産技術硏究所硏究論文集 Vol.6 No.1

This study is to choose the most proper model for AGV throughout simulation of behavior of suspension to reduce trial and error because there is no AGV treating heavy weight at harbor loading and unloading at home. Therefore, we estimate the vibration modes of the various suspensions applied to AGV, which is over 75 ton included the weight of two containers using the Matlab in the case of G and 5G, one of the simulation programs.

원발성 Aldosteronism의 1例 보고 : a case report

주관호,송헌순,나병만,백태일,이성환,배진선 대한내과학회 1976 대한내과학회지 Vol.19 No.11

A 45 years old female patient was admitted to Seoul Red Cross Hospital through the emergency room with chief compliants of severe headache, dizziness, and muscle weakness of upper and lower extremities, Her past history was revealed hypertension for 8 years but has not been treated. Physical examination showed that she had hypertension, positive Trousseau's sign, and diminished ' deep tendon reflex. Urine analysis revealed protein (±) and urine pH 8.0. Serum electrolyte showed K 1.8 mEq/L and Na 114 mEq/L. Blood pH was 7.41. Plasma renin activity was 140ng/%. Retroperitoneal pneumogram showed enlarged left adrenal gland. And so under the diagnosis of primary aldosteronism, she was explored and found to have an adenoma in the left adrenal gland. After removal of the left adrenal gland, symptoms and signs were markedly improved.