울산 울주지역 소규모 수도시설 지하수의 수리지화학적 특성 연구

김동수,김문수,조성진,김익현,이헌민,황종연,박선화,조훈제,김태승,김현구,Kim, Dongsoo,Kim, MoonSu,Jo, Sungjin,Kim, Ikhyun,Lee, Heonmin,Hwang, Jongyoen,Park, Sunhwa,Jo, Hunje,Kim, Taeseung,Kim, Hyunkoo 한국지하수토양환경학회 2017 지하수토양환경 Vol.22 No.5

The hydrogeochemical characteristics of groundwater in the small waterworks are examined with 81 groundwater samples in Ulju region, Ulsan. The pH ranged in 6.3-8.2 and did not exceed the drinking water standards. Electrical conductivity ranged from $50{\mu}S/cm$ to $1,719{\mu}S/cm$. It indicated that the electrical conductivities in groundwaters at the study area are relatively low, compared with other groundwaters in Ulsan area. The calcium concentrations in groundwaters ranged from 3.55 to 113.01 mg/L, and sodium concentrations ranged from 2.02 to 65.50 mg/L. Nitrate concentrations ranged from 0 to 100.56 mg/L and potassium concentrations ranged from N.D (not detected) to 2.50 mg/L. Major cations and anions were mainly derived from the water-rock interaction involving feldspar, gypsum and calcite. The groundwaters were mainly the $Ca-(Na)-HCO_3$ type, classified as the early stage of groundwater evolutions. The correlation between electrical conductivities and Ca concentrations in groundwaters was relatively high ($R^2=0.74$). In the correlations between ions, the correlation coefficient between $SO_4$ and Ca was 0.65 and between Mg and $HCO_3$ was 0.65.

한국판 전투 노출 척도의 신뢰도와 타당도

김동수,정혜경,최진희,소형석,김해정,고창민,김태용,정문용,Kim, Dong Su,Chung, Hae Gyung,Choi, Jin Hee,So, Hyung Seok,Kim, Hae Jung,Go, Chang Min,Kim, Tae Yong,Chung, Moon Yong 대한불안의학회 2012 대한불안의학회지 Vol.8 No.2

Objective : In posttraumatic stress disorder (PTSD), it is essential to evaluate the severity of trauma with a reliable instrument. The combat exposure scale (CES) is one of the most widely used measures for the combat-related trauma. The present study was conducted to test the reliability and validity of the Korean version of CES (CES-K). Methods : One hundred and forty-five male Korean veterans of the Vietnam War participated in this study. CES-K, the structured clinical interview for DSM-III-R (SCID), clinician administered PTSD scale (CAPS), and the Korean version life events checklist (LEC-K) were administered. Results : Cronbach's coefficient of CES-K was .85, and the test-retest reliability was .94. The mean [standard deviation (SD)] scores of CES-K were 20.4 (9.0) in the PTSD group and 12.0 (8.6) in the non-PTSD group (p<.001). CES-K showed a significant correlation with LEC-K (r=.31, p<.001) and CAPS (r=.52, p<.001). Only one factor was revealed by the factor analysis. Conclusion : CES-K showed good reliability and validity for assessing the severity of combat exposure. Further, it demonstrated comparable psychometric properties to the previous study. It is expected that CES-K will be a useful tool for evaluating the severity of combat exposure in Korea.

안전과 환경을 고려한 주지보재(락볼트) 시공에 관한 연구

김동수,김진용,이상만,김광남,정재열,강용국,Kim, Dong-Su,Kim, Jin-Yong,Lee, Sang-Man,Kim, Gwang-Nam,Jeong, Jae-Yeol,Gang, Yong-Guk 한국건설관리학회 2014 건설관리 : 한국건설관리학회 학회지 Vol.15 No.5

음곡(KI10) 금앵자 약침이 난소적출 생쥐의 골다공증에 미치는 영향

김동수,김정호,김영일,Kim, Dong-Soo,Kim, Jeoung-Ho,Kim, Young-Il 대한약침학회 2009 Journal of pharmacopuncture Vol.12 No.4

Objective & Methods : The purpose of this study was to observe the effects of herbal-acupuncture with Rosae Laevigatae Fructus extact(RLF-HA) at KI10(Umgok) on osteoporosis in ovariectomized( OVX) ddy mice. We carried out several experimental items to analyze the changes in body weight, uterine weight, uterus index, tibial length, the ash bone weight, tibial BMD, serum ALP, serum osteocalcin, serum Ca, and the levels of Ca, P, Ca/P ratio in tibia, and we performed histological and histomorphological analysis as well. Results : 1. Herbal-acupuncture with Rosae Laevigatae Fructus at KI10(Umgok) and saline injection at KI10(Umgok) significantly inhibited the reduction of tibial calcium level in ovariectomized mice. 2. Herbal-acupuncture with Rosae Laevigatae Fructus at KI10(Umgok) significantly inhibited the increase of tibial osteoclast cells in ovariectomized mice. 3. Herbal-acupuncture with Rosae Laevigatae Fructus at KI10(Umgok) significantly inhibited the reduction of tibial trabecular bone thickness(TBT) in ovariectomized mice. 4. Herbal-acupuncture with Rosae Laevigatae Fructus at KI10(Umgok) significantly inhibited the overgrowth of tibial growth plate length(GPL) in ovariectomized mice. Conclusion : These results suggested that herbal-acupuncture with Rosae Laevigatae Fructus at KI10(Umgok) has a therapeutic effect on osteoporosis, and to be put to practical use in the future osteoporosis clinic.

디스크형 압전 변압기의 전기적 특성

김동수,김광일,김흥락,정우철,남효덕,Kim, Dong-Soo,Kim, Kwang-Il,Kim, Heung-Rak,Jeong, Woo-Cheol,Nam, Hyo-Duk 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.11

In this study, a step-down piezoelectric transformer was fabricated to utilize as an adapter for charging batteries of mobile electronic appliances. The ceramic part of the transformer is $Pb[(Mn_{1/3}Sb_{2/3})_{_0.05}Zr_{0.475}Ti_{0.475}]O_3$ with mechanical quality factor of 1600, electromechanical coupling coefficient $59\%$, and piezoelectric constant $d_{33}$ 1300, which can be utilized as a piezoelectric transformer. A simply fabricated disk-typed test pattern of diameter 28 mm and thickness 2 mm was used to characterize output voltage, step-down ratio as a function of electrode area with the input remained constant, and power, efficiency as a function of input voltage, and temperature-dependent electric characteristics were evaluated. The sample APT1 showed the best properties. The highest admittance, effective electromechanical coupling coefficient and an appropriate mechanical quality factor were obtained at the sample with the input/output area ratio of 1:1.5 at the common electrode, and the condition of 20 $V_{rms}$, $50\;\Omega$ made the maximum efficiency of $95\%$. The temperature was increased by 14.7'E as the input voltage was increased for $50\;V_{rms},\;50\;\Omega$.

혼합 인산염의 첨가가 어류연육의 기능적 성질에 미치는 영향

김동수,김영명,김일환,이병준,Kim, Dong-Soo,Kim, Young-Myung,Kim, Il-Hwan,Lee, Byung-Joon 한국식품과학회 1985 한국식품과학회지 Vol.17 No.4

인산염의 첨가가 조기 및 갈치연육의 보수력 및 단백질의 용출성에 미치는 영향과 가열처리 후에 조기육을 원료로 가공한 어묵의 texture에 미치는 영향을 조사하기 위하여 인산염을 첨가하지 않은 대조구와 4종의 시판 복합 인산염을 첨가수준별로 사용 했을때의 기능적 성질을 분석 검토 하였다. 연육의 보수력 및 염용성 단백질량은 조기연육에는 인산염B(sodium poly-phosphate 50%. sodium Poly-Phosphate20%, sodium tetra meta-Phosphate 20%, sodium acid pyro-phosphates%, sodium ultra meta-phosphate 5%)를 갈치연육에는 인산염C(sodium poly-phosphate40%, sodium pyro-phosphate 30%, potassium pyro-phosphate 15%, sodium tetra meta-phosphate10%, sodium hexa meta-phosphates%)를 각각 0.4% 첨가한 경우가 가장효과적 이였고 그때의 염용성 단백질의 용출량은 조기연육이 954mg%, 갈치연육이 686mg%였다. 조기육을 원료로 하여 가공한 어묵의 적정가열 조건은 $85^{\circ}C$에서 45분간 가열한 것이 조직감이 양호 하였다. 한편 $121^{\circ}C$에서 10분간 가열한 경우는 C인산염이 다른 인산염에 비하여 어육 단백질의 열 안정성이 높은 것으로 나타났다. Effects of four kinds of phosphate complex on the water holding capacity (W.H.C) and protein solubility of yellow-corvenia (Pseudosciance manchurica) and hair tail (Tichurus lepturus) meat paste were investigated. The formulations of four kinds of phosphate complex employed to this experiment were made by mixing several phosphates such as sodium polyphosphate, sodium pyro-phosphate, sodium acid pyro-phosphate, potassium pyro-phosphate, sodium tetra meta-phosphate, sodium ultra meta-phosphate and sodium hexa meta-phosphate, and monoglyceride at different mixture ratios. Among the four kinds of phosphate complex, phosphate B complex which was formulated by mixing sodium poly-phosphate 50%, sodium pyrophosphate 20%, sodium tetra meta-phosphate 20%, sodium acid pyrophosphate 5% and sodium ultra meta-phosphate 5% was most effective on enhancing the W.H.C and protein solubility of yellow corvenia meat paste, and in case of hair tail meat paste, phosphate C complex which was formulated by mining sodium poly-phosphate 40%, sodium pyro-phosphate 30%, potassium pyro-phosphate 15%, sodium tetra meta-phosphate 10%, and sodium hexa meta-phosphate 5% was more effective than other phosphate complex, and their optimum addition level was 0.4% respectively in weight of fish meat paste. Texture characteristics such as hardness, cohesiveness, and springiness value of Kamaboko (fish meat paste product) were evaluated as best when 0.3% of phosphate B complex was added. The optimum cooking condition of Kamaboko to get good texture was heating for 45 mimutes at $85^{\circ}C$.

문화재 재해에 대한 지반공학적 접근방법

김동수,김덕문,박헌준,김경섭,Kim, Dong-Su,Kim, Deok-Mun,Park, Heon-Jun,Kim, Gyeong-Seop 한국전산구조공학회 2009 전산구조공학 Vol.22 No.1

사관생도들의 혈액성분 및 신체조성 변화 연구

김동수,정연수,김근수,Kim, Dong-Soo,Chung, Yeon-Soo,Kim, Keun-Su 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.1

This study investigated physical and physiological changes of normal young adults, who are cadets of the Air Force Academy, have kept long-term physical activities and healthy behavior. The physical and physiological indices were the blood and body composition. Data were collected at the first year period, and then 4th year period from same group of cadets. The amounts of blood components were not changed, but variation among cadets was significantly reduced in the 4th grade period. The red blood cells(RBCs) were significantly reduced and the concentration of hemoglobin(HGB) were significantly increased. The body weight was significantly decreased in the 1st grade period since the body fat was rapidly decreased after the basic military drill, and then it was recovered with building up of the skeletal muscle in the 4th grade period. Asymmetry of the arms was decreased with the increased physical activities and usage of various equipments. The muscular endurance were significantly enhanced in the 4th grade period. The long-term physical activities and healthy behaviors may keep the physical strength through enhanced blood stream and oxygen supply by reduction of the RBCs and increased HGB concentration, and fat and muscle control.

환원/확산 공정에 의한 고성능 Nd-Fe-B 자성분말의 제조

김동수,진춘강,백연경,최철진,Kim, Dongsoo,Chen, Chunqiang,Baek, Younkyoung,Choi, Chuljin 한국분말야금학회 2013 한국분말재료학회지 (KPMI) Vol.20 No.3

A novel route to prepare Nd-Fe-B magnetic particles by utilizing both spray drying and reduction/diffusion processes was investigated in this study. Precursors were prepared by spray drying method using the aqueous solutions containing Nd salt, Fe salt and boric acid with stoichiometric ratios. Precursor particles could be obtained with various sizes from 2 to $10{\mu}m$ by controlling concentrations of the solutions and the average size of $2{\mu}m$ of precursors were selected for further steps. After heat treatment of precursors in air, Nd and Fe oxides were formed through desalting procedure, followed by reduction processes in Hydrogen ($H_2$) atmosphere and with Calcium (Ca) granules in Argon (Ar) successively. Moreover, diffusion between Nd and Fe occurred during Ca reduction and $Nd_2Fe_{14}B$ particles were formed. With Ca amount added to particles after $H_2$ reduction, intrinsic coercivity was changed from 1 to 10 kOe. In order to remove and leach CaO and residual Ca, de-ionized water and dilute acid were used. Acidic solutions were more effective to eliminate impurities, but Fe and Nd were dissolved out from the particles. Finally, $Nd_2Fe_{14}B$ magnetic particles were synthesized after washing in de-ionized water with a mean size of $2{\mu}m$ and their maximum energy product showed 9.23 MGOe.

한의사 교의 사업을 통한 소아청소년기 금연 교육의 효용성 연구

김동수,성현경,신선미,고호연,박정수,이승환,박장경,Kim, Dong-Su,Sung, Hyun Kyung,Shin, Seon Mi,Go, Ho Yeon,Park, Jeong-Su,Lee, Seung Hwan,Park, Jang Kyung 대한한방소아과학회 2018 대한한방소아과학회지 Vol.32 No.3

Objectives Childhood & adolescence is the most crucial period in a lifetime to learn ability to maintain one's health even though this period usually has the least death rate or illness. Smoking is the one of the most common cause of one's death and illness, but can be avoidable. The purpose of this study is to investigate the effectiveness of the smoking cessation education through the program by school doctor of Korean medicine. Methods In 2017, the Seoul metropolitan office of education and the Seoul Korean medicine association implemented the program by school doctor of Korean medicine including smoking cessation education for 2 elementary schools (470 students) and 3 middle schools (1,106 students). And we carried out questionnaire to 211 people (1 elementary school and 1 middle school) and analyzed the results. Results The score in regards to smoking knowledge, before and after education, was increased from 3.35 to 4.22. The score in regards to negative perceptions about smoking, before and after education, was increased from 17.62 to 18.08. Conclusions After the smoking cessation education through the program by school doctor of Korean medicine, participants were highly satisfied because their knowledge about the smoke was increased as well as negative perception of the smoke. Therefore, development and application of smoking cessation programs will be needed.