복사열과 부분열림이 자연대류에 미치는 영향에 관한 연구

노승균,김광선,이재효 대한기계학회 1994 대한기계학회논문집 Vol.18 No.11

The unsteady numerical simulations have been presented for the laminar natural convection in a partially open compartment. Computations were performed within the domain of the compartment in order to show the thermal radiation and the partially opening effects on the flow fields and heat transfer characteristics. The results were shown for different Planck numbers(0.05~5) and opening ratios(0.25~0.75) being fixed with Ra=$10^5$ and Pr=0.71. Considering the flow which is buoyancy driven from the heated wall, and the buoyancy is not much affected by the further outside region from the opening, the numerical computations have been performed without an outer region by the particular boundary treatments on the flow velocity and temperature at the different partial openings. The confined numerical domain reduced the CPU time and the memory of computer. P-1 approximation of radiative transfer equation was employed with Marshak type boundary conditions along with the pseudo-black body approximation at the partial openings. The numerical results clearly show that the natural convective flow and heat transfer are much affected by increase of thermal radiation particularly from the initial state. When thermal radiation is not much affecting the flow ($PL{\le}1$), it was found that thermal radiation effects are almost negligible.

배 시설재배의 이론과 발전방향

노승균 충남대학교 농과대학 1999 논문집 Vol.- No.5

열린 공간에서의 복사 열전달을 고려한 비정상 층류 자연대류의 수치해석 연구 ( Numerical Simulation of Transient Laminar Natural Convection and Thermal Radiation in a Partially Open Compartment )

노승균,김광선,이재효 대한기계학회 1993 대한기계학회 춘추학술대회 Vol.- No.-

학교 환경조건의 차이가 여고생의 신체활동량 및 체력에 미치는 영향

노승균(Noh Seung-Kyun),강호율(Kang Ho-Youl),류종식(Ryu Jong-Sik) 학습자중심교과교육학회 2019 학습자중심교과교육연구 Vol.19 No.9

본 연구의 목적은 기숙형 고교와 통학형 고교에 재학중인 여고생들을 대상으로 학교 환경 조건의 차이가 여고생의 신체활동량, 신체조성 및 체력에 미치는 영향을 알아보는데 있다. 이를 위해 D광역시에 위치한 기숙형 고등학교 여학생 278과 통학형 고등학교 여학생 300명을 대상으로 보수계를 이용하여 신체활동량을 측정하였으 며, 신체조성(신장, 체중, BMI, WHR)과 체력(근력, 순발력, 유연성, 심폐지구력)을 측정하여 얻은 자료를 분석하였다. 연구의 결과는 다음과 같다. 첫째, BMI는 기숙형 고등학교 여학생들이 통학형 고등학교 여학생들에 비해 유의하게 낮게 나타났으며, WHR 역시 통학형 고등학교 여학생들이 기숙형 고등학교 여학생들에 비해 유의하게 낮았다. 둘째, 일일 평균 신체활동량은 기숙형 고등학교 보다 통학형 고등학교 여학생들이 유의하게 높게 나타났다. 셋째, 체력의 경우 통학형 고등학교 학생들과 기숙형 고등학교 학생들 사이에 순발력을 제외한 심폐지구력, 근력, 유연성에서 유의한 차이가 나타났다. 넷째, 기숙형 고등학교 여학생의 신체활동량은 순발력과 유의한 상관관계가 나타났으며, 통학형 고등학교는 심폐지구력 종목인 스텝검사와 정적 상관이 나타났다. 또한 1,200m 걷고 달리기와 부적상관이 나타났다. 본 연구의 결과 기숙형 고등학교 학생이 통학형 고등학교 학생보다 BMI가 유의하게 낮게 나타났지 만, 신체활동량은 통학형 고등학교 학생이 유의하게 높았다. 따라서 여고생에 있어서 신체활동량보다 소득수준, 가정환경 등의 다른 요인들이 BMI에 유의한 영향을 미치는 것으로 사료되며 BMI에 영향을 주는 요인에 대한 후속 연구가 필요하다고 판단된다. The purpose of this study was to examine the effect of school environmental conditions on physical activity volume and physical fitness of high school girls. To achieve this purpose, 588 high school girls (278 boarding school students and 300 students commuting to school) from all grades(1 to 3) took part in the experiment. Pedometers were used to record physical activity(steps/day). Students wore the pedometers at all times for seven days, except while sleeping, swimming, bathing, or showering. Also, height, weight, BMI, WHR and evaluated cardiorespiratory endurance, muscle endurance, muscle power, flexibility were measured. The results were as following; 1) BMI (p<.001) of boarding school girls(BSG; 20.45±3.16) was significantly lower than that of commuting school girls(CSG; 21.98±2.43). 2) WHR(p<.01) of BSG 0.82±0.39) was significantly higher than that of CSG(0.75±0.06). 3) Physical activity level(steps/day) of CSG was significantly higher than that of BSG during weekdays(6249.72±2197.94 vs. 4723.21±1702.39), weekends(5107.22±2332.69 vs. 4077.99±1805.04), and average physical activity(5923.29±1929.82 vs. 4538.86±1585.73). 4) There was significant difference between BSG and CSG of cardiorespiratory endurance, muscle endurance, flexibility except muscle power. 5) There was no significant correlation among physical activity volume and BMI, WHR. But, Positive correlation(r=.134, p<.05) between physical activity and standing long jump in BSG was found. Negative correlation (r=-.142, p<.05) between physical activity and 1,200m running & walking and positive correlation (r=.154, p<.01) between physical activity and step test in CSG were found.

고정액에 따른 피하결합조직내 비만세포의 변화에 관한 연구

정성균,박경란,노승무,김원식 대한해부학회 1991 Anatomy & Cell Biology Vol.24 No.3

부식환경하에서 Al 7075-T6의 피로수명에 미치는 쇼트피닝의 효과에 관한 연구

정성균(Seong-Kyun Cheong),남지헌(Ji-Hun Nam),구대림(Dae-Lim Kou),노승남(Seung-Nam Ro) 한국항공우주학회 2005 韓國航空宇宙學會誌 Vol.33 No.2

부식은 기계류나 금속 부품의 성능과 수명을 저해하는 가장 큰 요인으로 작용하고 있다. 이 논문에서는 쇼트피닝이 부식환경하에서 Al 7075-T6의 피로수명에 미치는 쇼트피닝의 효과를 연구하였다. 쇼트피닝한 시험편의 피로한도는 약 52% 증가하는 것으로 나타났으며, 금속재 부품의 피로수명을 크게 연장시키는 것으로 보인다. 쇼트피닝을 한 시험편과 쇼트피닝 하지 않은 시험편을 1주에서 1년까지 비교 시험한 결과 부식은 피로강도를 현격히 감소시켰다. 쇼트피닝을 하였을 경우에는 부식에 의해 6개월 까지는 피로강도 및 피로 수명이 감소하지 않은 것으로 나타났다. 따라서 쇼트피닝 가공이 금속재료의 수명에 대한 부식의 영향을 크게 감소시키는 효과가 있음을 알 수 있다. Corrosion highly affects the lifetime and performance of machinery metallic components. The effects of shot peening on the fatigue life of Al 7075-T6 under corrosive environment are investigated in this paper. Experimental results show that the fatigue limit of shot peened specimen increases about 52%. That means the fatigue life of metallic components is highly extended by shot peening. The corrosion greatly reduces the fatigue strength depending on the corrosive condition from one week up to one year. In case of shot peened specimen, the corrosion does not reduce the fatigue strength and fatigue life up to six months. It means that the shot peening has superior effectiveness to reduce the influence of corrosion to the metallic materials.

법원 경매 입찰 나들이 첫걸음

이상협,노승균,김명숙,김성민,박상일,박재현,이상인 명지대학교 증권보험대학원 2000 졸업논문집 Vol.- No.22

운동영양학 : 서열하 운동 탈수 후 탄수화물의 섭취가 위배출률에 미치는 영향

정수련(JoungSu-Ryun),노승균(NohSeung-Kyun),강호율(KangHo-Youl),( Shi Xiaocai ) 한국체육학회 2005 한국체육학회지 Vol.44 No.3

The purpose of this study was to examine the effect of dehydration resulted from exercise on gastric emptying rate (GER) and to investigate the differences between water and 6% glucose solution on GER after dehydration. On separate occasions in randomized order six male college students (26.67 +/- 0.76 yr of age, 78.55 +/- 7.10 kg) exercised for 90 min (or until 2% of initial body weight was lost) on a bicycle ergometer in a warm environment (30 degree C with 30-50% RH). Following exercise, subjects were moved to a neutral environment(18 degrees C with 30-50% RH) and ingested 400ml of water or 6% glucose solution(absorption of water and a 6% glucose solution were compared) Gastric volume were determined prior to each drink and at 15min using modified double sampling technique. Blood sample were taken before and after exercise(pre) and after ingestion of test solution(post). Blood samples were analyzed for percent for change in plasma volume, electrolyte concentration, lactate and glucose concentration. The following observations were made : 1) Dehydration resulted from exercise in a warm environment did not significantly reduce GER. 2) The percentage of ingested test solution emptied from the stomach were significantly less for 6% glucose compared with water. 3) Glucose concentration were significantly higher 6% glucose compared with water while lactate level, osmolality concentration and plama volume were not significantly different from all treatment. 4) The electrolyte results showed no significant differences between the treatment.

단순 식피술에 의해 치유된 음경내 이물질 주입 환자에 대한 임상적 고찰

김선진,신기용,엄기일,노승형,류재만,김잉곤,안희창,안덕균,최희윤,최봉근 大韓成形外科學會 1998 Archives of Plastic Surgery Vol.25 No.4

There are many documented case failures of penile enlargement due to illegal medical practitioner injecting foreign bodies as main source of augmentation materials. The most common foreign body materials used for penile augmentation are paraffin, silicone, and vaseline. The foreign bodies such as paraffin, silicone, and vaseline are insoluble, non-stimulated, and non-metabolizable materials. Because of their physical characteristics, it is quite common for illegal medical practitioner to utilize these materials as main source of augmentation materials. However, there are many side effects involved with these materials. The side effects are tissue inflammation, necrosis, granuloma formation, hypersensitivity reaction, embolism, deformity, and carcinoma. Furthermore, if these materials are injected in gross amount, a pressure necrosis could occur. Such like foreign bodies can scar the tissue for life and metastasize to other parts of the body such as mons pubis, inguinal area, and scrotum. Foreign bodies that have been embedded for long period of time can penetrate even deeper into the tissue, metastasize even further region, evolved to grannuloma, and occasionally, invades the lymph nodes and evolved to malignant tumor. The most ideal treatment is to extract injected foreign materials and excise involved tissue at the earliest recognition of symptoms. We applied medium and full thickness skin graft and tie-over dressing on the denuded penis after complete excision of foreign body and granulomatous tissue. Following are the results of our study. 1) Study results revealed highest incidences among 3rd and 4th decades, and incidence among second decade is on the rise. 2) Most common symptoms are foreign body sensation, pruritus, skin necrosis, secondary infection, and dysuria. 3) Foreign materials that have been embedded for long duration can penetrate even deeper into the tissue and metastasize even further region. 4) Obtained functional and aesthetic results with skin graft after removal of foreign materials and involved tissue.

83 년도 연구소원 본지 게제의 논문초록 : 튜립 ( Tulipa gesneriana L. )의 촉성재배에 관한 연구 : 2. 생장 및 발달에 미치는 생장조절의 영향

정희돈 ( Hee Don Chung ),노승문 ( Seung Moon Roh ),변재균 ( Jae Kyun Byun ),서정근 ( Jeung Keun Suh ) 영남대학교 자원문제연구소 1984 資源問題硏究 Vol.3 No.-