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A pediatric case of Bickerstaff’s brainstem encephalitis
박주이,고경옥,임재우,전은정,윤정민,김효정 대한소아청소년과학회 2014 Clinical and Experimental Pediatrics (CEP) Vol.57 No.12
Bickerstaff’s brainstem encephalitis is characterized by ophthalmoplegia, ataxia, and disturbance of consciousness. It is similar to Miller Fisher syndrome, a variant of Guillain-Barre syndrome, in that they share features such as ophthalmoplegia and ataxia. The difference is that patients with Bickerstaff’s brainstem encephalitis have impaired consciousness, whereas patients with Miller Fisher syndrome have alert consciousness and areflexia. Here, we report the case of a 3-year-old child who was diagnosed with Bickerstaff’s brainstem encephalitis presenting typical clinical features and interesting radiological findings. The patient showed ophthalmoplegia, ataxia, and subsequent stuporous mentality. Brain magnetic resonance imaging revealed high signal intensity in the pons and cerebellum around the 4th ventricle on a T2-weighted image. He was successfully treated with intravenous immunoglobulin. Differentiation of Bickerstaff’s brainstem encephalitis and Miller Fisher syndrome is often difficult because they possess many overlapping features. Brain magnetic resonance imaging may be helpful in diagnosing Bickerstaff’s brainstem encephalitis, especially when lesions are definitely found.
Increase in Aminotransferase Levels during Urinary Tract Infections in Children
박주이,고경옥,임재우,전은정,윤정민 대한소아소화기영양학회 2013 Pediatric gastroenterology, hepatology & nutrition Vol.16 No.2
Purpose: The aim of this study was to evaluate the prevalence of increased aminotransferase levels and to identify associated factors in children admitted to hospital with urinary tract infections (UTIs). Methods: The study included children with a diagnosis of UTI who were admitted to the Konyang University Hospital from January 2007 to May 2011. The total number of patients was 249 and the mean age was 15.88±28.21 months. UTI was defined as a positive urine culture (>105/colony forming unit [CFU]) with pyrexia. Patients were treated by intravenous antibiotics, such as ampicillin/sulbactam, aminoglycoside, cephalosporins or vancomycin. Patients with neonatal jaundice or other liver disease were excluded. We investigated the relationship of aminotransferase levels with the type of antibiotic, degree of vesicoureteral reflux (VUR), and causative organisms. Results: Children with increased aminotransferase levels were younger than those with normal levels (p=0.001), but white blood cell count, platelet count, causative organisms, type of antibiotics and presence of VUR were not associated with aminotransferase levels. Aminotransferase levels became normal within 1 month after discharge without special measures, except in 1 case. Conclusion: We found that many children with UTI have abnormal aminotransferase levels. In most cases, this change is mild and self-limiting. We conclude that increased aminotransferase level increase during UTI do not require unnecessary tests and excessive treatment. (Pediatr Gastroenterol Hepatol Nutr 2013; 16: 89∼94)
입력 다듬기기법을 이용한 유연관절을 갖는 로봇의 잔류진동 제거
박주이,장평훈 대한기계학회 1994 대한기계학회논문집 Vol.18 No.11
This paper addresses the residual vibration problem of robots due to joint flexibility excited by fast accelerations, which has not been easily solved with conventional closed loop controllers. In this paper, an open loop input shaping technique, proposed by singer, has been applied to a 3 DOF robot with joint flexibility. In conjunction to the technique, a closed loop controller based on time-delay controller was also used. The results of simulations and experiments showed that the technique is quite effective for suppressing the residual vibration.
박주이,김진욱,김정민,김지윤,김웅지,김수호 제어로봇시스템학회 2013 제어로봇시스템학회 각 지부별 자료집 Vol.2013 No.12
This paper represents a portable robot which is to use for welding process of double wall of ship hulls in shipbuilding yard. It has 5 degrees of freedom and 3㎏ of payload. Its body weight is 17.3 [㎏] so that human workers can hand-carry it to the work place. Its body is mainly made of magnesium and aluminum alloys. Since the robot is placed about 25m apart from its controller, EtherCAT is adopted for reliable connection between robot and controller through single light cable. RTX real-time kernel and KPA EtherCAT master are used to control the robot on windows XP environment. The performance of the developed robot is satisfactory to the requirement in welding task of U-type cell in shipbuilding yard.
박주이 ( Ju Yee Park ),윤재영 ( Jae Young Yoon ),민선양 ( Sun Yang Min ),홍승권 ( Seung Kwon Hong ),박주상 ( Ju Sang Park ),장은정 ( Eun Jeong Jang ),백현욱 ( Hyun Wook Baik ),박상종 ( Sang Jong Park ) 대한소화기학회 2007 대한소화기학회지 Vol.50 No.3
Pneumatosis cystoides intestinalis is an uncommon condition of unknown etiology, characterized by the presence of multiple gas filled cysts in the gastrointestinal tract. Many different causes of pneumatosis cystoides intestinalis have been proposed, including mechanical, pulmonary, and bacterial causes. Approximately 85% of cases are thought to be secondary to coexisting disorders of the gastrointestinal tract or the respiratory system. The condition has been associated with the therapeutic uses of lactulose, steroids, and various cancer chemotherapeutic regimens. Lactitol is a disaccharide analogue of lactulose which is available as a pure crystalline powder. There are three previous case reports suggestive of lactulose causing pnumatosis intestinalis. We report a case of recurrent pneumatosis cystoides intestinalis associated with benign recurrent pneumoperitoneum developed probably secondary to lactitol therapy. (Korean J Gastroenterol 2007;50:188-192)
조선소의 대형블록 용접을 위한 인력 운반형 용접로봇 개발
박주이(Juyi Park),김진욱(Jin-Wook Kim),김정민(Jung-Min Kim),김지윤(Ji-Yoon Kim),김웅지(Woongji Kim),김수호(Soo-Ho Kim) 제어로봇시스템학회 2014 제어·로봇·시스템학회 논문지 Vol.20 No.7
This paper represents a portable robot for use in the welding process of the double hulls in shipbuilding yards. It has 5 degrees of freedom and 3kg of payload. Its body weight is 17.3 [kg] so that human workers can carry it by hand to the work place. Its body is mainly made of magnesium and aluminum alloys. Since the robot is placed about 25m apart from its controller, EtherCAT is adopted for reliable connection between the robot and controller through a single light cable. RTX real-time kernel and KPA EtherCAT master are used to control the robot on a Windows XP environment. The performance of the developed robot is satisfactory to the requirement in welding tasks of U-type cells in shipbuilding yards.