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이정주,김유겸,Lee, Jung-Ju,Kim, You-Kyum 한국섬유공학회 2011 한국섬유공학회지 Vol.48 No.2
Selected standard methods for washing machines: agitating type; horizontal drum type. Market detergents: standard powder detergent; powder detergent; liquid detergents. Standard soiled clothes composed of five types, including the various contaminants from the actual life of soiled clothes, respectively. When washing with the standard course for a washing machine and using the standard, recommended amount of detergent product, the detergency for the agitating-type washing machine and standard soiled clothes increased by approximately 25%, on average, compared to the case of -30% use, and increased by 2% compared to the case of +60% use, respectively. When the horizontal drum-type washing machine was used, detergency increased by approximately 28%, on average, compared to -30% use, and increased by 12% compared to +100% case. Accordingly, the detergency when using the standard amount of detergent increased by approximately 27% on average, and increased by approximately 7% compared to the cases of +60%~+100% use. Moreover, the residue of the detergent components was extremely small, but proportional nonetheless to detergent concentration.
자동차 브레이크 마찰재용 비침상형 육티탄산칼륨의 합성 연구
이정주,이나리,피재환,김종영,김정주,Lee, Jung Ju,Lee, Na-Ri,Pee, Jae-Hwan,Kim, Jong-Young,Kim, Jeong-Joo 한국재료학회 2017 한국재료학회지 Vol.27 No.3
We synthesized potassium hexatitanate, ($K_2Ti_6O_{13}$, PT6), with a non-fibrous shape, by acid leaching and subsequent thermal treatment of potassium tetratitanate ($K_2Ti_4O_9$, PT4), with layered crystal structure. By controlling nucleation and growth of PT4 crystals, we obtained splinter-type crystals of PT6 with increased width and reduced thickness. The optimal holding temperature for the layered PT4 was found to be ${\sim}920^{\circ}C$. The length and width of the PT4 crystals were increased when the nucleation and growth time were increased. After a proton exchange reaction using aqueous 0.3 M HCl solution, and subsequent heat treatment at $850^{\circ}C$, the PT4 crystal transformed into splinter-type PT6 crystals. The frictional characteristics of the friction materials show that as the particle size of PT6 increases, the coefficient of friction (COF) and wear amounts of both the friction materials and counter disc increase.
수재해 정보관리 및 서비스를 위한 공간, 비공간 정보 자료 개념 설계
이정주,김동영,정영훈,황의호,채효석,Lee, Jeong-Ju,Kim, Dong-Young,Jung, Young-Hun,Hwang, Eui-Ho,Chae, Hyo-Sok 한국농공학회 2016 한국농공학회논문집 Vol.58 No.2
This study conducted a basic design of system and interface which provide both of spatial and non-spatial data for water hazard information management. This helps to decide directions of the future integrated water hazard information platform and possible technical examinations of the web-based system for the realization of the prototype. For user friendly system, this study did a survey to investigate the data format, service environment, image processing level and visualization type that users prefer. Also, authorization range was set up by type of the user group. In the water hazard information platform, the data and analysis algorithm were classified by the fields. Furthermore, the platform was consisted with six block systems according to the function and the interface and designed to flexibly mount or modify the additional functions. For a basic design of the data exchange method and protocols, a prototype was constructed by using the spatial information web service technology. The portal service system to visualize and provide spatial data was designed by the WMS/WFS type of OGC standard interface and the FTP/HTTP interface type through open source GIS software for server environment.
자궁경부의 원발성 Signet Ring Cell Adenocarcinoma
이정주 ( Jung Ju Lee ),차동수 ( Dong Soo Cha ),한경희 ( Kyoung Hee Han ),정인배 ( In Bai Chung ),이상영 ( Sang Young Lee ),염현식 ( Hyun Sik Youm ),이현주 ( Hyun Ju Lee ),정순희 ( Soon Hee Jung ) 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.12
Signet ring cell adenocarcinoma of the cervix is most commonly considered to be metastatic in origin. We describe one case of primary signet ring cell adenocarcinoma of the cervix occuring in 49-year-old patient. The lesion was located at the posterior lip of the cervix and about 3 cm in size. This case was parametrium thickening in pelvic examination and positive for HPV type 18. CCRT (concurrent chemoradiotherapy) was done for clinical FIGO stage ⅡB adenocarcinoma of the cervix. The patient is alive for 6month since diagnosis and disappear lesion of the cervix. A upper gastroenteroscopy, colonoscopy, cystoscopy, intravenous pyelogram, abdominal pelvic CT, PET CT, mammogram were reported negative. Therefore we concluded this case for a primary cervical origin of signet ring cell adenocarcinoma of the uterine cervix.
이정주 ( Jung Ju Lee ),이주옥 ( Ju Ok Lee ),이대형 ( Dae Hyung Lee ),김미진 ( Mi Jin Kim ),이두진 ( Doo Jin Lee ) 대한산부인과학회 2012 Obstetrics & Gynecology Science Vol.55 No.1
Large cell neuroendocrine carcinoma (LCNEC) of the ovary is a rare entity and is frequently associated with ovarian surface epithelial tumors. Since Collins et al. described the fi rst case of mixed neuroendocrine and mucinous carcinoma, a few more cases of primary ovarian LCNECs have been reported. The prognosis of LCNECs is generally very poor even when the diagnosis is made at an early stage. A 40-year-old woman presented with a pelvic mass measuring 30 cm in diameter. She underwent an exploratory laparotomy for resection of the pelvic mass and staging if needed. After the operation, she was diagnosed of stage Ia LCNEC associated with mucinous tumor (including benign, borderline, malignant tumor) of left ovary. The patient received six cycles of paclitaxel-carboplatin chemotherapy postoperatively. There have been no signs of local tumor recurrence or metastasis at followup examinations during the fi rst 8 months after the operation.
이주옥 ( Ju Ok Lee ),이정주 ( Jung Ju Lee ),김미주 ( Mi Ju Kim ),이현주 ( Hyun Ju Lee ),이대형 ( Dae Hyung Lee ),김정식 ( Jung Sik Kim ),박윤기 ( Yoon Ki Park ) 대한산부인과학회 2012 Obstetrics & Gynecology Science Vol.55 No.11
Congenital cataracts are lens opacities that cause visual impairment in children. Early diagnosis of congenital cataracts is necessary because it facilitates appropriate intervention that can result in good visual function. Moreover, prenatal diagnosis, in particular, aids in the development of a therapeutic plan for the neonate. Ocular anomalies can be diagnosed prenatally because of the recent progress in obstetric ultrasonography. We report a case in which prenatal ultrasonography was used to diagnose congenital cataract. A brief review of the literature has also been provided.
GMT Sheet에서 섬유함유율 및 섬유배향이 인장강도에 미치는 영향
이정주(Jung-Ju Lee),이동기(Dong-Gi Lee),심재기(Jae-Ki Sim),조선형(Seon-Hyung Jo),김진우(Jin-Woo Kim) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
We can say that the increasing range of the value of GMT Sheet's tensile strength in the direction of fiber orientation is getting wider as the tiber content increases. It shows that the value of GMT Sheet's tensile strength in the direction of fiber orientation 90 is similar with the value of pp's intensity when fiber orientation function is J=0.7, regardless of the tiber content. Tensile strength of GMT Sheet is affected by the fiber orientation distribution more than by the fiber content.
이정주 ( Jung-ju Lee ),김종훈 ( Jong-hun Kim ),도영수 ( Young-soo Do ),전재욱 ( Jae-wook Jeon ) 한국정보처리학회 2022 한국정보처리학회 학술대회논문집 Vol.29 No.2
자동차의 첨단화·다기능화에 따라 내장되는 프로그램이 점차 복잡해지고 ECU 개수가 증가하고 있다. 이로 인해 리프로그래밍 횟수가 늘어나고, 시간과 비용 또한 증가하였다. 현재 리프로그래밍 시간을 줄이는 다양한 연구가 진행되고 있으며, 앞으로 더 중요해질 것으로 보인다. 사람의 목숨과 직접 연결되는 자동차의 특성을 고려하면, 데이터의 변형 여부 파악도 빼놓을 수 없는 중요한 문제이다. 이 논문에서는 데이터의 빠른 전송에 초점을 맞춘 데이터 포맷과 빠른 전송 및 기존 데이터 전송 포맷의 장점을 살린 새로운 데이터 전송 포맷을 제안하였다.