산화성 고온 리튬용융염계 분위기에서 Pyro-Carbon의 부식거동

임종호,최정묵,Lim, Jong-Ho,Choi, Jeong-Mook 한국재료학회 2013 한국재료학회지 Vol.23 No.2

The electrolytic reduction of a spent oxide fuel involves liberation of the oxygen in a molten LiCl electrolyte, which is a chemically aggressive environment that is too crosive for typical structural materials. Therefore, it is essential to choose the optimum material for the process equipment for handling a molten salt. In this study, the corrosion behavior of pyro-carbon made by CVD was investigated in a molten LiCl-$Li_2O$ salt under an oxidation atmosphere at $650^{\circ}C$ and $750^{\circ}C$ for 72 hours. Pyro-carbon showed no chemical reactions with the molten salt because of its low wettability between pyro-carbon and the molten salt. As a result of XRD analysis, pyro-carbon exposed to the molten salt showed pure graphite after corrosion tests. As a result of TGA, whereas the coated layer by CVD showed high anti-oxidation, the non-coated layer showed relatively low anti-oxidation. The stable phases in the reactions were $C_{(S)}$, $Li_2CO_{3(S)}$, $LiCl_{(l)}$, $Li_2O$ at $650^{\circ}C$ and $C_{(S)}$, $LiCl_{(l)}$, $Li_2O_{(S)}$ at $750^{\circ}C$. $Li_2CO_{(S)}$ was decomposed at $750^{\circ}C$ into $Li_2O_{(S)}$ and $CO_{2(g)}$.

Disciplinary Community Sports and Recreation : The Influence of the Leadership Behaviors on the Organizational Effectiveness in the Sport - for - all Center

임종호,이재홍,권정국 ( Jong Ho Lim,Jae Hong Lee,Jung Kook Kwon ) 한국체육학회 1994 국제스포츠 학술대회 Vol.1994 No.-

LiCl-Li₂O 용융염에서 Inconel 합금 및 Incoloy 800H의 고온 부식거동

임종호,최정묵,Lim, Jong-Ho,Choi, Jeong-Mook 한국재료학회 2013 한국재료학회지 Vol.23 No.2

A study on the corrosion behavior of Inconel alloys and Incoloy 800H in molten salt of LiCl-$Li_2O$ was investigated at $650^{\circ}C$ for 24-312 hours in an oxidation atmosphere. The order of the corrosion rate was Inconel 600 < Inconel 601 < Incoloy 800H < Inconel 690. Inconel 600 showed the best performance suggesting that the content of Fe, Cr and Ni are the important factor for corrosion resistance in hot molten salt oxidation conditions. The corrosion products of Inconel 600 and Inconel 601 were $Cr_2O_3$ and $NiFe_2O_4$, In case of Inconel 690, a single layer of $Cr_2O_3$ was formed in the early stage of corrosion and an outer layer of $NiFe_2O_4$ and inner layer of $Cr_2O_3$ were formed with an increase of corrosion time. In the case of Incoloy 800H, $Cr_2O_3$ and $FeCr_2O_4$ were observed. Most of the outer scale of the alloys was observed to be spalled from the results of the SEM analysis and the unspalled scale which adhered to the substrate was composed of three layers. The outer layer, the middle one, and the inner one were Fe, Cr, and Ni-rich, respectively. Inconel 600 showed localized corrosion behavior and Inconel 601, 690 and Incoloy 800H showed uniform corrosion behavior. Ni improves the corrosion resistance and too much Cr and/or Fe content deteriorates the corrosion resistance.

0.002% 보론첨가 저탄소강의 미세조직 및 기계적 성질에 미치는 열처리의 영향

임종호,김종식,박병호,이진현,최정묵,Lim, Jong-Ho,Kim, Jong-Sik,Park, Byung-Ho,Lee, Jin-Hyeon,Choi, Jeong-Mook 한국재료학회 2011 한국재료학회지 Vol.21 No.6

The effect of heat treatment on the micro-structures and the mechanical properties of 0.002% boron added low carbon steel was investigated. The tensile strength reached the peak at about $880-890^{\circ}C$ with the rising quenching temperature and then the hardness decreased sharply, but the tensile strength hardly decreased. The tensile and yield strength decreased and the total elongation increased with a rising tempering temperature, but the tensile and yield strength sharply fell and the total elongation prominently increased from above a $400-450^{\circ}C$ tempering temperature. Tempered martensite embrittlement (TME) was observed at tempering condition of $350-400^{\circ}C$. In the condition of quenching at $890^{\circ}C$ and tempering at $350^{\circ}C$, the boron precipitates were observed as Fe-C-B and BN together. The hardness decreased in proportion to the tempering temperature untill $350^{\circ}C$ and dropped sharply above $400^{\circ}C$ regardless of the quenching temperature.

150 MW급 가스터빈 저압 1단 회전익 교체주기 연장 가능성 연구

임종호,이재헌,Lim, Jong-Ho,Lee, Jae-Heon 한국플랜트학회 2013 플랜트 저널 Vol.9 No.4

국내 A 복합발전소에서 운전 중인 150 MW급 가스터빈 저압 1단 회전익의 교체주기 연장가능성을 다각적으로 모색하였다. 제작사가 추천한 24,000 등가운전시간 이상을 사용한 저압 1단 회전익의 외관검사, 열차폐코팅 제거 후 모재의 표면검사 및 균열검사를 각각 실시하였다. 또한 제작사별 150 MW급 가스터빈의 교체주기를 비교 분석하였다. 제작사가 추천한 24,000 등가운전시간 이상이 경과하여 27,000 등가운전시간을 운전한 저압의 외관을 검사한 결과 냉각홀 부위에 다수의 균열이 관찰되었다. 그러나 열차폐코팅을 제거한 상태에서 실시한 모재의 표면검사에서는 균열이 거의 관찰되지 않았으며, 모재까지 진행된 일부 미세 균열에 대해서는 절단면 검사를 통하여 균열깊이가 기능에 영향을 미치지 않는 수준임을 확인하였다. 따라서 본 연구대상 가스터빈 저압 1단 회전익의 교체정비주기는 현행 24,000 등가운전시간에서 3,000 등가운전시간의 연장이 가능할 것으로 보인다. 또한 연구대상 저압 1단 회전익에 대하여 제작사가 추천한 교체주기는 타제작사 1단 회전익 교체주기의 2/3 수준으로 짧게 설정되어 있어 교체주기 연장이 가능할 것으로 판단된다. In order to extend a hot gas parts replacement cycle of a gas turbine, blade row 1 from low pressure turbine, which has a significant impact on the cycle, has been selected from stored set after one cycle use. Taking into account the status of the first stage moving blade in LP turbine operated more than 27,000 equivalent operating hours(EOH) and the replacement cycle in the same type of gas turbine, the replacement of the high temperature components installed on the GT, a study subject, can be extended from 24,000 to 27,000 EOH.

산화철 합성에 미치는 침전제와 초음파의 영향

임종호,김태현,이승원,Lim, Jong-Ho,Kim, Tae-Hyun,Lee, Seoung-Won 한국재료학회 2006 한국재료학회지 Vol.16 No.11

Synthesis of Iron oxides by air oxidation of $FeSO_4$ solutions in the presence of NaOH, Diethylenetriamine (DETA), Butylamine (BA) and influence of ultrasonic wave were investigated by XRD, SEM and particle size analyzer. As the DETA addition increased to 0.05 mol, $Fe_3O_4$ was formed with goethite($\alpha$- FeOOH) and $Fe_3O_4$ single phase was formed above 0.18mol of DETA. As the BA addition increased, the XRD peak intensity of (020) face of lepidocrocite($\gamma$-FeOOH) was developed until the formation of $Fe_3O_4$ and reduced the size of the iron oxide particles formed. Ultrasonic wave reduced the size of the iron oxide particles but gave little effects on the iron oxide particles synthesized by amine.

자매에서 발생한 선천성 피부형성 부전증

임종호 ( Jong Ho Lim ),박훈 ( Hoon Park ),김진우 ( Jin Wou Kim ),유동수 ( Dong Su Yu ) 대한피부과학회 2010 대한피부과학회지 Vol.48 No.6

Aplasia cutis congenita (ACC) is a rare congenital disorder, which was first described by Cordon in 1767. It is characterized by a defect of epidermis, dermis, subcutaneous tissues and sometimes even bone, and occurs predominantly on the scalp. Non-scalp locations are involved in 15% of all cases and are often bilaterally symmetrical. Most cases of ACC appear sporadically. Intrauterine trauma, vascular accidents or genetic factors are postulated as initial steps in the pathogenesis. However, the aetiology of this condition remains unknown. Familial cases have been reported and are suggestive of either an autosomal dominant or autosomal recessive inheritance with variable expression. We herein report on a 10-day-old female infant and her 8-year-old sister with aplasia cutis congenita on their legs. (Korean J Dermatol 2010;48(6):517∼520)

지속주 시간의 차이가 심폐지구력에 미치는 영향

임종호(Lim Jong Ho),이진호(Lee Jin Oh) 한국사회체육학회 2000 한국사회체육학회지 Vol.14 No.-

This study is intended to the effect of the Continuous Running Time Difference on Cardiorespiratory Endurance in order to present effective data for developing middle school students' cardiorespiratory endurance. They took part in this experiment. They are sound physically and spiritually and do not exercise regularly. They were trained with the same aerobic intensity three times a week. They were randomly sampled into 4 groups, which consist of 6. According to the continuous running time, they were divided into 4 groups-G I (continuous running time is 3 minutes), GII(6 min.), GIU(9 min.), GIV (comparative group)-and had been trained for 8 weeks. Before and after the training, they performed maximal treadmill work. The results were as the following, 1. VO2bmax/kg According to the Running time, There was meaningful between GIII and GII. In the efficiency GIII was ranked the highest and GII, G I and GIV in order. 2. Ventilation Equivalent There was meaningful between GIV, GIII, and GII in the Rumning time. In the efficiency GIII was ranked the highest and GII, G I and G1V in order. 3. The improvement of anaerobic ventilation threshold effect there was no meaningful for the improvement of anaerobic ventilation threshold effect. According to the above results, The result was necessary for us to study intensity, frequency, duration, types, and time in training per day, so that we may find out practical training methods to improve cardiorespiratory endurance. It is necessary to study a reaovery rate after the training and muscular fatigue too. Especially the study about recovery rate will be efficiently useful in planing lessons of school. It is required to study the case of female students in order to find out the gender difference of cardiorespiratorv endurance.

저수온기 참돔(Pagrus major) EP사료 내 동ㆍ식물성단백질 혼합물의 어분 대체

임종호 ( Jongho Lim ),김민기 ( Min-gi Kim ),임현운 ( Hyunwoon Lim ),이봉주 ( Bong-joo Lee ),이승형 ( Seunghyung Lee ),허상우 ( Sang-woo Hur ),김강웅 ( Kang-Woong Kim ),이경준 ( Kyeong-jun Lee ) 한국수산과학회(구 한국수산학회) 2021 한국수산과학회지 Vol.54 No.3

This study aimed to evaluate how fish meal (FM) replacement in diets with a mixture of animal and plant protein sources affect growth performance, feed utilization, hematological parameters and innate immunity of red seabream Pagrus major. A control FM diet was formulated to contain 65% FM (Con). Two other diets were prepared replacing FM in the control diet with a mixture of protein sources (wheat gluten, soy-protein concentrate, tankage meal, and poultry by-product meal) by 30 and 40% (FM30 and FM40, respectively). Total 300 red seabream (body weight, 77.6±0.3g) were distributed to 12 tanks (300 L) in 4 replicates per diet. The fish were fed the diets to apparent satiation for 19 weeks. After the feeding trial, no significant differences could be observed in growth performance, feed utilization, hematological parameters, innate immunity, and survivals among all the dietary treatments. This long-term feeding trial at low water temperature (13.8-17.5°C) indicates that a proper mixture ratio of wheat gluten, soy protein concentrate, tankage meal, and poultry by-product meal can replace FM up to 40% in red seabream diets.

사마귀 환자의 삶의 질과 경제적 부담에 관한 연구

임종호 ( Jong Ho Lim ),김혜성 ( Hei Sung Kim ),김형옥 ( Hyung Ok Kim ),김범준 ( Beom Joon Kim ),최순용 ( Soon Yong Choi ),박영민 ( Young Min Park ) 대한피부과학회 2010 대한피부과학회지 Vol.48 No.1

Background: Although warts are common viral infections of the skin, no single optimal treatment has been determined and most warts are resistant to the current treatment modalities. As a result, many patients suffer from viral warts. Nevertheless, there have been few studies on the patients` quality of life and the economic burden associated with viral warts. Objective: The purpose of this study is to assess the quality of life and the economic burden in the population affected by viral warts by administering a survey questionnaire. Methods: A questionnaire quoted from the Dermatology life Quality Index was administered to one hundred twenty patients who had viral warts. Results: The data for the quality of life revealed that warts do not particularly affect the patient`s daily living activities nor their psychological status. However, the data indicated that the treatment of warts had significantly negative effects on the quality of life of our patients. With regard to treatment satisfaction, many were unsatisfied with `the pain associated with treatment`. The estimated cost for the treatment of warts was 45,900 won per treatment and the estimated total treatment expenditure of each patient was 236,800 won. Conclusion: These results suggest that warts significantly affect the patients` quality of life and especially due to its resistance to treatment and the pain associated with the treatment. Moreover, warts can impose a considerable economic burden. (Korean J Dermatol 2010;48(1):33∼38)