인발실험을 통한 내진갈고리 대체용 RCC장치의 부착 및 정착의 합성거동

김은영 ( Kim Eun-young ),김용주 ( Kim Yong-joo ),최성모 ( Choi Sung-mo ),김대진 ( Kim Dae-jin ),박경언 ( Park Kyoung-yeun ) 한국복합신소재구조학회 2021 복합신소재구조학회논문집 Vol.12 No.2

철근콘크리트 기둥에서 후프철근의 내진갈고리 시공성을 개선하기 위하여 기존 연구에서 “띠철근 갈고리 뽑힘 방지 장치”인 RCC장치(Rebar Confinement Clip)를 제안하여 인발실험을 통한 부착 및 정착성능 실험을 실시하였다. 그러나, 기존 연구의 실험에서는 콘크리트 구조기준에서 제시하는 피복두께를 준수하지 않았다. 그러므로, 보다 신뢰성 있는 실험 결과를 도출하기 위하여 기준에서 제시하는 피복두께를 준수한 실험체로 실험을 실시할 필요가 있다. 이를 위하여 총 6개 실험체를 제작하여 실험을 실시하였으며 실험결과, 부착 및 정착의 합성강도는 RCC장치로 체결된 띠철근의 갈고리가 내진갈고리가 발휘하는 강도 보다 높게 나타났다. 또한, 내진갈고리의 실험체 균열 진전 및 파괴 양상과 RCC장치로 체결된 띠철근의 실험체는 유사하게 나타났다. 그러므로, 콘크리트 피복두께를 준수한 실험체에서 RCC장치로 띠철근에 체결할 경우 내진갈고리가 발휘하는 동등한 성능을 보유하고 있는 것으로 평가된다. Rebar Confinement Clip (RCC) was suggested to the existing park’s research. It is a device that prevents the tie-hook from being pulled out. In the existing anchorage experiment of RCC, the concrete cover thickness was not considered; therefore, the composite behavior experiment of the bond and anchorage has to be conducted considering the concrete cover thickness presented in the standards because the more similar it is to the real RCC column, the more dependable are the experiment value. A total of six specimens were analyzed considering the concrete cover thickness of 40mm. The results of the experiment showed that the bond and anchorage composite strength of RCC were higher than the standard seismic hook, and a similar crack propagation and failure mode of seismic hook was observed. Subsequently, RCC is evaluated to have structural performance similar to earthquake hook considering concrete cover thickness.

續斷이 난소적출 흰쥐의 골조직 대사에 미치는 영향

김윤수(Yeun Soo Kim),박원상(Won Sang Park),김은영(Eun Young Kim),오현아(Hyun A Oh),이현삼(Hyun Sam Lee),손영주(Young Joo Sohn),손낙원(Nak Won Sohn),정혁상(Hyuk Sang Jung) 한의병리학회 2008 동의생리병리학회지 Vol.22 No.3

당뇨병 환자의 당뇨지식, 자가간호활동과 자기효능감의 관계 - 일 종합병원 환자를 대상으로 -

이미화,김은영,Lee, Mee-Hwa,Kim, Yeun-Young 한국가정간호학회 2003 가정간호학회지 Vol.10 No.1

This study provides some basic information on the improvement of diabetics' self-care activities through examining the patients' knowledge on diabetes, self-care activities, and how much they feel those activities are effective and through studying the correlation among the three factors. One hundred and fifty four patients were subjected to this study, who were treated or hospitalized in a hospital in Pusan. Researches were conducted from October 21 to November 9, 2002, and information were gathered by questionnaire and direct conversation with the patients. The data was processed through SPSS WIN 10.0 program. The Date were analyzed by descriptive statistics, ANOVA, t-test, Pearson correlation coefficient and Spearman rank correlation coefficient. The results of this study was the followings; 1) The subjects' knowledge on diabetes ranged from 6 to 23 points with a mean of 17.01 points. 2) The subjects' self-care activities ranged from 21 to 103 points with a mean of 67.72 points. That of the patients with regular treatments appeared to have the highest points (3.51) and the lowest points appeared in the measurement of sugar level in blood (2.60) 3) The subjects' feelings of effectiveness ranged from 21 to 103 points with a mean of 70.01 points. Drug therapy had the highest point (3.94) and diet showed the lowest (3.37) 4) In the general characteristics of the subjects, the more education a subject had, the more knowledge on diabetes he or she appeared to have (F=3.36, p=0.012). The self-care activities were significantly high among non-alcoholic subjects (F=4.301. p=.016). The subjects' feelings of effectiveness were higher in female patients than in male patients(t=2.132 , p=.035), and those in the ages between 51 and 60 felt more effectiveness (F=4.198. p=.003). In addition, married subjects felt more effectiveness than the unmarried (t=2.856, p=0.005), and the more education a patient had. the more effectivess he or she felt (F=2.879, p=.025). 5) In the subjects' pathological characteristic, the subjects who experienced diabetes education showed more knowledge on diabetes, more self-care activity, and more effectiveness than those without the education (t=3.193, p=.002; t=2.299, p=.023; t=2.128, p=.035). 6) As the results of the analyses of correlations among knowledge on diabetes, self-care activity, and effectiveness, the more knowledge on diabetes a patient had, the more self-care activity and the more effectiveness he or she showed (p=0.283. p=0.002; p=0.182, p=0.036). Self-care activity became higher as the feeling of effectiveness appeared higher (r=.550, p=.000). Based on the results above, several suggestions were made; 1) This study was conducted in one hospital, so it is difficult to generalize the results. It is necessary to gather more information from more patients through repeated researches. 2) The study on the other factors which can affect a patient's self-care activity is required. 3) The development of a program which improves a patient's self-care activity, knowledge on diabetes. and effectiveness is needed.

기일고류동층내류동화(氣一固流動層內流動化) 및 전열특성(傳熱特性)에 관한 연구(硏究)(II)

박종순,백고길,김은영,전성탁,Park, Jong-Suen,Baek, Ko-Kil,Kim, Yeun-Young,Jeon, Sung-Taek 한국태양에너지학회 1994 한국태양에너지학회 논문집 Vol.14 No.2

본 연구에서는 Furan foundry sand 유동층에서 유동화 특성과 Single spiral coil tube에 대한 열전달 특성을 실험하였으며, 전열관의 Pitch와 직경의 비(p/Do=1.58, 2.37, 3.17, 4.75) 및 전열관의 Pitch와 유동입자 크기의 비(p/dp=21.25, 25.15, 30.18, 35.93)가 전열특성에 미치는 영향을 실험적으로 연구하였다. 그 결과 다음과 같은 결론을 얻었다. 1) p/Do가 증가 할수록 평균 열전달계수는 증가한다. 2) 평균 Nusselt수의 증가율은 p/Do=4.75일 때보다 1.58 일 때가 더 크다. 3) 평균 Nusselt수와 Re수, $Pr_g$수 및 p/dp의 상관 관계식은 다음과 같이 나타낼 수 있었다. $Nu_{mean}=C\;Re^m\;Pr_g^{0.4}(p/dp)^n$. The fluidization characteristics of the furan foundry sand fluidized bed and the heat transfer characteristics on a single spiral coil tube in the bed have been investigated. In the paper, the heat transfer coefficients for a single spiral coil tube are measured in the furan foundry sand bed as a function of the ratio of heated coil tube pitch to diameter(p/Do) and the ratio of heated coil tube pitch to particle size(p/dp). The experimental results are as follows. 1) Mean heat transfer coefficients increases according to the increasing ratio of heated coil tube pitch to diameter(p/Do). 2) The Increasing rates of mean Nusselt numbers are more greater in the case of p/Do=1.58 than p/Do=4.75. 3) Mean Nusselt number can be expressed by the following equation, $Nu_{mean}=C\;Re^m\;Pr_g^{0.4}(p/dp)^n$.

回轉傳熱平板의 衝突數噴流에 의한 冷却

전성탁(Sung-Taek Jeon),김은영(Yeun-Young Kim),이종수(Jong-Su Lee),박종선(Jong-Suen Park),이덕봉(Doug-Bong Lee) 한국태양에너지학회 1995 한국태양에너지학회 논문집 Vol.15 No.2

Agricultural Use of High Water Absorbing Polymers from Acrylic Acid

한양규(Yang Kyoo Han),김영하(Young Ha Kim),김은영(Un Young Kim),노영팔(Yeong Pal No),정연태(Yeun Tae Jung),정근식(Gun Sik Chung) 한국고분자학회 1990 한국고분자학회 학술대회 연구논문 초록집 Vol.1990 No.4

氣-固流動層內流動化 및 傳熱特性에 관한 硏究 (II)

朴鍾淳(Park, Jong-Suen),白高吉(Baek, Ko-Kil),金殷泳(Kim, Yeun-Young),全成鐸(Jeon, Sung-Taek) 한국태양에너지학회 1994 한국태양에너지학회 논문집 Vol.14 No.2

의사의 스테로이드 외용제 처방 현황 및 부작용 인지도에 대한 설문조사

박수진 ( Sujin Park ),최수안 ( Soo An Choi ),이주연 ( Ju-yeun Lee ),김은영 ( Eun Young Kim ),신완균 ( Wan Gyoon Shin ),김도영 ( Doyoung Kim ) 대한피부과학회 2021 대한피부과학회지 Vol.59 No.2

Background: Topical steroids are the most commonly prescribed anti-inflammatory agents in dermatology, and patients often experience various adverse events of topical steroid application. Patients’ awareness of adverse effects and understanding of coping strategies for these unwanted events are pivotal elements for the safe use of topical steroids. Objective: This study aimed to assess the prescribing pattern of topical steroids and patient education for safe use by dermatologists and non-dermatology specialists in Korea. Methods: A questionnaire was sent to dermatologists, pediatricians, and other specialists through an online survey. A total of 444 answers were analyzed; then, the numbers were adjusted according to the nationwide proportion of specialists prescribing topical steroids. The total number of respondents was set to 720 after the adjustment. Results: Dermatologists prescribed topical steroids to 49% of their patients, while other specialist doctors prescribed to 6.4% of the patients. Mid-potency steroids were most commonly prescribed (52.9%), followed by low/weak potency (37.6%), in adjusted analysis. Overall, 12.5% of all respondents and 14.5% of dermatologists reported adverse events due to topical steroids within the last month. The physicians spent 2.1 minutes on average (2.0 minutes for dermatologists) for patient education on proper use of topical steroids. The majority (79.1%) of physicians informed patients of the fact that the prescription contained steroids, while some were reluctant to disclose this information because of the negative perception about steroids in the general population. Conclusion: This survey provides thorough information on the current status of prescription, counseling condition, doctors’ perception of patients’ knowledge of adverse events, and proper use of topical steroids. (Korean J Dermatol 2021;59(2):100∼107)

傾斜面에 衝突하는 水噴流의 熱傳達 特性에 關한 硏究

최국광(Choi Guk-Gwang),나기대(Na Gi-Dae),김은영(Kim Yeun-Young),전성택(Jeon Sung-Taek),이종수(Lee Jong-Su) 한국태양에너지학회 1993 한국태양에너지학회 논문집 Vol.13 No.1

下向의 軸對稱自由噴流가 等熱流束 條件의 傾斜傳熱面에 衝突하는 軸對稱 衝突水噴流系를 構成하였다. 實驗變數로는 노즐-전열면간 距離, 레이놀즈수, 無次元傾斜角으로 하였으며, 노즐_전열면간 거리의 범위는 1.5~10.5, 레이놀즈수의 範圍는 1X10⁴~4X10⁴, 무차원 경사각의 범위는 0.5, 0.67, 0.83, 1.00으로 하였다.<br/> 이와같은 實驗的 硏究에서 국소누셀트수는 Rw^0.7에 比例하여 增加되었으며 또한 停滯點으로부터 局所距離가 8培되는 下向勾配傳熱面의 局所位置에 第2의 極大 熱傳達 現像이 나타나고 있으나, 高速領域이 됨에 따라 경사각의 영향이 增加되었으며, 특히 국소위치의 X/D≤-4는 壁面噴流領域에서 경사각에 대한 영향이 明確하게 나타나고 있다.<br/> 停滯點熱傳達은 噴流速度와 노즐-전열면간 거리에 比例해서 增加되며 層流理論解에 比하여 最少2.4培 이상 높은 熱傳達效果를 나타내었으며, 停滯點누셀트수는 레이놀즈수, 프란틀수, 노즐-전열면간 거리 그리고 無次元 傾斜角을 包含하는 無次元 實驗式으로 나타내었다. The purpose of this research is to investigate the characteristics of heat transfer in the downward axisymmetric free water jet system impinged on a flat oblique plate which has the uniform heat flux. Experimental conditions considered were Reynolds number, distance between nozzle and flat plate, inclination angle of heater surface and nozzle exit velocity.<br/> Local Nusselt number was subjected to the influence of Re number, Pr number, oblique angle of heating surface and local position of flat plate. In the wall region of downward surface, the secondary peak point of heat transfer appeared at the local point of X/D = -8 from the stagnation point. The stagnation heat transfer rate of this experimental study augments 2.4 times than that of laminar theorical solution. The stagnation nusselt number is function of Reynolds number, nozzle-plate spacing, Prandtl number and oblique angle of impinging plate.