슬립폼공법 적용된 동절기 케이슨의 온도에 따른 응결시간 및 압축강도

김봉주,김재훈,김찬수,조호규,Kim,Bong-Joo,Kim,Jae-Hun,Kim,Chan-Soo,Jo,Ho-Kyoo 한국방재학회 2006 한국방재학회논문집 Vol.6 No.1

항만공사에 사용되는 케이슨의 제작은 slip-form을 사용한 연속타설공법을 적용하고 있다. 국내 공사에서는 동절기에도 소요의 압축강도를 발현하기 위해서 양생시간의 조절과 slip-form 자체에 온도조절이 가능한 가열보온기기를 설치하여 시공하고 있다. 외기온에 따른 최적 양생온도 및 탈형시간을 추정하여 다음과 같은 결론을 도출하였다. 양생온도 <TEX>$30^{\circ}C$</TEX>에서 6시간의 양생시간을 거쳐 탈형되는 것이 압축강도의 발현이나 탈형의 부착 등의 문제가 없는 것으로 판단된다. In the harbor construction work, caisson is made by slip-form method and curing temperature of caisson concrete need heating in the low-temperature. To get the setting time and compression strength of slip-form method applied caisson at various curing temperature. The curing temperature is divided to the temperature of slip-form and the temperature of second curing curtain. In consideration of setting time, compression strength of concrete and form-removal time, the best temperature is <TEX>$25^{\circ}C$</TEX> at 6 hours slip-form curing time.

NaCl을 첨가한 데침 열처리 취나물의 미생물 보존성

김봉주,이영덕,박종현,Kim, Bong-Joo,Lee, Young-Duck,Park, Jong-Hyun 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.4

취나물의 보존과 유통 시에 미생물 품질을 높이기 위하여 hurdle technology를 이용한 데침, 위생처리제와 감압포장 처리에 따른 분석을 하였다. 데침 열처리 후 위생처리제로는 20% 에탄올과 10% NaCl에서 6일 후에 총 세균수가 2 log CFU/g으로 효과적으로 제어되었다. 데침 시의 물온도는 $100^{\circ}C$ 온도가 균의 제어에 더 유리하였으며, 보관온도는 $4^{\circ}C$ 온도가 균 증식을 적게 하였다. 2회 반복적인 데침과 NaCl 첨가 $80^{\circ}C$ 데침 물온도의 처리에서도 현저한 증식 억제 효과를 확인하였다. 데침 시에 접촉되었던 물이 없는 감압포장 상태에서의 데침도 10일간 2 log CFU/g 총세균수를 보여 주어 세균 억제에 효과적임을 알았다. 그리므로 $80{\sim}100^{\circ}C$에서 10% NaCl 물로 2회 반복 데침이 취나물의 미생물적인 품질을 높여 주었고, 물 접촉이 없는 반복 데침도 취나물의 보관 유통에 도움이 됨을 알 수가 있었다. To improve microbiological quality of Aster scaber during storage and distribution, hurdle technology with the sanitizers and packaging methods was used. After blanching, total aerobic bacteria of Aster scaber treated with 20% ethanol and 10% NaCl were measured at 2 log CFU/g after 6 days. Total aerobic bacteria of blanched Aster scaber at $100^{\circ}C$ were measured at 2 log CFU/g, and the storage at $4^{\circ}C$ effectively inhibited the growth of bacteria. Repeated blanching using water with added NaCl at $80^{\circ}C$ showed similar microbial growth inhibition compared with treatment at $100^{\circ}C$. After vacuum packaging, blanched sample showed 2 log CFU/g of total aerobic bacteria during 10 days (the storage at $4^{\circ}C$). Therefore, repeated blanching using the water with added 10% NaCl improved the microbiological quality of Aster scaber. We also found that repeated blanching after vacuum packaging was an effective way for storage and distribution of Aster scaber. In conclusion, blanching two times in the 10% salt water or in vacuum packaging at $80{\sim}100^{\circ}C$ would be helpful to control the microbes during storage and distribution.

[자유기고] 용어(用語)의 정의(定意)

김봉주(Kim Bong-Joo) 대한건축학회 2006 建築 Vol.50 No.1

2014년 건강보험심사평가원 환자표본데이터 분석을 이용한 현훈환자의 의료비용에 관한 연구

김봉주 ( Bong Joo Kim ),강형원 ( Hyung Won Kang ),김남권 ( Nam-kwen Kim ),서은성 ( Eun-sung Seo ) 대한한방신경정신과학회 2018 동의신경정신과학회지 Vol.29 No.3

Objectives: The purpose of this study was to analyze the medical cost for patients with vertigo and to examine associations between chronic vertigo and mental disorder using 2014 Health Insurance Review & Assessment Service-National Patients Sample (HIRA-NPS). Methods: We analyzed sociodemographic characteristics, medical cost and medical care use pattern for vertigo patients. We used hierarchical multiple logistic regression analysis to examine odds ratio between chronic vertigo and mental disorder. Results: A total of 46,502 people and 118,504 claims data were identified for vertigo cases. Characteristics of vertigo patients have significant differences on proportion of female patients (68.36%), patients’ average age (54.98) and proportion of medical assistance (5.76%) compared with non-vertigo patients. Results revealed that Korean medicine are one of frequent methods among total treatments for vertigo patients. Total days of medical care and total costs are 2.78 days and 111,362 won, respectively, and days for outpatients in Korean medical care (mean: 2.26 days) are more than those (mean: 5.05 days) in Western medical care. There is significant difference relative to sex between acute vertigo and chronic vertigo. The odds ratio between chronic vertigo and mental disorder is estimated as 1.34, that means risk of becoming chronic is 34% higher for vertigo patients with mental disorder. Conclusions: This study assessed socio-demographic characteristics, medical care use and expenses related to vertigo, and estimated associations between chronic vertigo and mental disorder. Findings provide a basis for economic evaluation studies on vertigo patients and development of clinical practice guidelines for vertigo patients with mental disorder.

직병렬 유도결합형 안테나를 이용한 대면적 플라즈마 소스 연구

김봉주(Bong-Joo Kim),이승걸(Seung-Gol Lee),오범환(Beom-Hoan O),이일항(El-Hang Lee),박세근(Se-Geun Park) 대한전자공학회 2002 대한전자공학회 학술대회 Vol.2002 No.6

퍼지 PID 제어를 이용한 추종 제어기 설계

김봉주(Bong-Joo Kim),정정주(Chung Choo Chung) 제어로봇시스템학회 2001 제어·로봇·시스템학회 논문지 Vol.7 No.7

RTOS 기반의 소프트웨어 2D BitBLT 엔진의 설계

김봉주(Bong-Joo Kim),홍지만(Jiman Hong) 한국컴퓨터정보학회 2014 韓國컴퓨터情報學會論文誌 Vol.19 No.4

본 논문은 소프트웨어 기반의 2D BitBLT 엔진을 pSOS 운영체제에서 구현하는 것을 제안하였으며, 제안된 BitBLT엔진을 환자감시장치에서 동작을 검증하였다. 본 논문에서 제안한 방법의 검증을 위해, 환자감시장치 보드를 기반으로 하는 별도의 프로토 타입 PCB 보드를 제작하고, 동작을 검증하였다. 메인 보드는 ARM9 기반의 CPU로 설계하였으며, 하드웨어 기반의 BitBLT 모듈을 소프트웨어 기반의 모듈로 동작하면서 가중되는 CPU의 부하문제의 해결을 위해 200Mhz 프로세서 대신 400Mhz 프로세서로 변경하였다. 본 논문에서는 환자감시장치에서 GUI를 구현하는데 있어 그래픽 콘트롤러의 핵심요소 중의 하나인 2D BitBLT 모듈을 커널의 디바이스 드라이버로 구현하였다. In this paper, we proposed the implementation of software-based 2D BitBLT engine on the pSOS operating system and the operation of the BitBLT engine on patient monitoring device was verified. To verify the proposed method on the patient monitoring device, we designed prototype PCB board, and verified the operation. We designed the motherboard by using ARM9-based CPU. Because hardware-based BitBLT module was replaced with software-based one, CPU load problem was weighted. To solve this problem, w changed 400Mhz processor instead of 200Mhz processor. We implemented 2D BitBLT kernel module as a device driver which is one of the key elements of a graphics controller GUI in patient monitoring device.

두부손상을 동반한 다발성 외상환자에서 중증도 평가지표로서 염기결핍의 유용성

김봉주 ( Bong Joo Kim ),강태경 ( Tae Kyung Kang ),최승운 ( Seung Woon Choi ),김혜진 ( Hye Jin Kim ),오성찬 ( Sung Chan Oh ),조석진 ( Suk Jin Cho ),류석용 ( Seok Yong Ryu ) 대한외상학회 2012 大韓外傷學會誌 Vol.25 No.4

Purpose: The arterial base deficit and the serum lactate level are widely recognized indicators of injury severity, adequacy of resuscitation and outcome. The purpose of this study is to evaluate the usefulness of the arterial base deficit as an injury-severity indicator in multiple-trauma patients with head injuries. Methods: Data were retrospectively collected from trauma patients over 18 years of age who had been admitted at the emergency center between October 2005 and July 2006. The patients were divided into headinjury and non-head-injury groups. These patients were then sub-divided into minor (ISS≤15)-injury and major (ISS≥16)-injury groups according to their injury severity scores (ISS). We analyzed the differences in the base deficits and the serum lactate levels between the major- and the minor-injury sub-groups in both the head-injury and the non-head-injury groups. Results: In the non-head-injury group, we found statistically significant differences in the arterial base deficit between the major-injury and the minor-injury sub-groups(-6.86±2.40mmol/L vs. -1.37±0.73mmol/L, p=0.010). In the head-injury group, no significant differences were noted between the two sub-groups(-2.50±1.28mmol/L vs. -1.51±0.74mmol/L, p=0.897). Moreover, the differences in arterial base deficit between the major-injury and the minor-injury sub-groups were not significant both for either single-head-trauma or multiple-head-trauma patients (p=0.643 vs. p=0.832). Conclusion: We conclude that neither the arterial base deficit nor the serum lactate level can be used to predict injury severity in multiple-trauma patients with head injuries. (J Trauma Inj 2012;25:223-229)

비가시성 금정광의 효율적 용해를 위한 소성전처리 적용과 분해 잔유물에 대한 광물학적 해석

김봉주 ( Bong Ju Kim ),조강희 ( Kang Hee Cho ),오스지 ( Su Ji Oh ),온현성 ( Hyun Sung On ),김병주 ( Byung Joo Kim ),최낙철 ( Nag Choul Choi ),박천영 ( Cheon Young Park ) 한국광물학회 2013 광물과 암석 (J.Miner.Soc.Korea) Vol.26 No.1

금정광에 함유된 금, 은 및 유용금속을 효과적으로 용해시키기 위해서 비가시성 금정광을 소성 및 소금소성처리하였다. 이들 소성처리 생성물에 대하여 왕수분해 결과 금, 은 및 유용금속 함량은 비가시성 장광에서보다 소성정광에서, 그리고 소성정광에서 보다 소금소성정광에서 더 많이 용해되었다. 금과 은이 최대로 용해되는 입도는 181 ~ 127 ㎛, 750℃의 소성온도, 그리고 20%의 소금첨가량에서였다. XRD 분석을 수행한 결과, 석영과 황철석은 750℃의 소성처리, 그리고 왕수분해에도 불구하고 분해되지 않았다. 황철석은 소금소성처리에 의하여 완전하게 분해되었지만 석영은 파괴되지 않았다. 따라서 석영에 함유된 금은 소금소성처리나 왕수분해를 수행해도 용해되지 않을 것으로 예상된다. In order to dissolve Au, Ag, and other valuable metals from gold ore concentrate, raw gold concentrate was pre-treated by roasting and salt-roasting at 750℃. The roasted concentrate was treated with aqua regia digestion to dissolve the valuable metals and higher amount of Au, Ag, and valuable metals were extracted from the roasted concentrates than from the raw concentrate. Higher amount of these metals were also extracted from the salt-roasted concentrate than from the roasted concentrate. The results of the gold dissolution experiments showed that the gold dissolution was most efficient when particle size, roasting temperature, and the percentage of added salt in salt roasting were about 181~127 ㎛, 750℃, and was 20.0%, respectively. The XRD analysis suggests that quartz and pyrite were not destroyed even through roasting at 750℃ and decomposition with aqua regia. However, through salt roasting, pyrite was completely decomposed, whereas quartz could not be destroyed through salt-roasting at 750℃ and aqua regia digestion. Accordingly, it was expected that the gold contained in quartz can not be dissolves through salt-roasting and treatment with aqua regia.

콘크리트 내단열벽체 구성재료의 온습도 변화

김봉주(Bong-Joo Kim),조병후(Byung-Hoo Cho),손장열(Jang-Yeul Sohn) 한국생활환경학회 1995 한국생활환경학회지 Vol.2 No.2