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신창록,심종걸,전용철,권기운,이영열,김인순,정태준,최일영 대한내과학회 1990 대한내과학회지 Vol.38 No.5
An analysis of 50 patients with metastatic carcinoma from unknown primary site, seen at Hanyang University Hospital from january 1985 to December 1987, was performed. 50 patients constituted 2.4% of the total carcinoma patients registered at Hanyang University Hospital. The mean age of the patients was 55.1 years. Histopathologic diagnosis revealed adenocarcinoma in 68% and squamous cell carcinoma in 20% of the cases. The common sites of metastases were the lymphnodes, pleura, peritoneum and bones. The overall median survival time was 4.5 months. The primary sites were identified in only four patients(8%) during the follow-up periods. There was no difference in survival time between treated and untreated adenocarcinoma patients, but in squamous cell carcinoma patients group survival for treated versus untreated was 12.8 months versus 1.7 months.
신창록,손창호,박인철,최한선,강병규 한국임상수의학회 1997 한국임상수의학회지 Vol.14 No.1
12-month-old Buldig and 3-year-old German Shepherd, treated with corticosteroids duringthe late pregnancy, were referred to the Veterinary Teaching Hospital, Chonnam National University, with chief complaints of vaginal discharge. Radiographic, ultrasonographic and surgical findings that obtained from each cases were as follows; case I: Radiographic findings were identified 2 fetuses that were normal skeleton, however, fetal viability could not be determined. Ultrasonographic findings were identified absence of fetal heartbeat and fetal movement, abnormal echogenicity of the abdominal visera, and echogenic materials remaining within the fetal fluid. After hysterotomy, macroscopic findings of uterus were liquefied materials remaining within the uterine lumen. Fetuses were excessively autolysis (falling off the hair, depression of the eye, and necrosis of the abdormal visera and skin). case II: Radiographic findings were identified irregular fetal structures and fetal movement, loss of recognizable fetal anatomy, dislocation of fetal veterbrae and echogenic materials remaining within the uterine lumen. After ovariohysterectomy, macroscopic finding of uterus and fetus were thickened uterine wall, yellowish-brown colored administration of corticosteroids during gestation should be contraindicated because fetal death is inducced. Ultrasonography has an advantage over radiography in that it permits evaluation of fetal viability.
신창록(Chang-Rok Shin),박종현(Jong Hyeon Park),유홍희(Hong Hee Yoo) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
In This paper proposes the control algorithm for quadruped robots on irregularly sloped uneven surface. Body balance is important in stable running locomotion. Since the body balance is determined by the forces applied at the feet during touchdown phase, the ground reaction force is controlled for stable running. To control the forces at each foot, the desired force is generated. The generated desired force is compared with actual contact force, then, the difference between them modifies the foot trajectory. The desired force is generated by combination of the rate change of the angular and linear momentum at flight. Then the rate change of momentum determines each force distribution. The distribution of the force is carried out by fuzzy logic. The computer simulation is carried out with the commercial software RecurDyn<SUP>®</SUP> . Dynamic model simulation program show that the stable running on the irregularly sloped uneven surface are accomplished by the proposed method.
신창록 ( Sin Chang Log ),전재범 ( Jeon Jae Beom ),심종걸 ( Sim Jong Geol ),정성수 ( Jeong Seong Su ),김성윤 ( Kim Seong Yun ),송홍기 ( Song Hong Gi ),정경천 ( Jeong Gyeong Cheon ),김명호 ( Kim Myeong Ho ) 대한내과학회 1990 대한내과학회지 Vol.38 No.1
N/A An eighteen-year-old girl with systemic lupus erythematosus developed sudden total blindness and paraplegia. On examination, both pupils did not react to light and optokinetic nystagmus did not appear. The fundus was normal. The paralysis was the upper motor neuron type with a loss of sensation below the T₄ level. Control of bladder and rectal sphincters was lost. The CSF pressure was 150㎜H₂O and fluid analysis showed protein 92㎎%, gluscose 43㎎% and WBC 40/㎜₃. Computed tomography of the brain and spinal cord showed no definite lesion. MRI of the brain demonstrated multiple small areas of increased signal intensities at the paraventricular white matter, suggesting a demyelinating process. A diagnosis of Devic`s syndrome was made and she received steroid pulse therapy. The symptoms of transverse myelitis recovered completely but visual acuity showed only partial improvement.
신창록(Chang-Rok Shin),김장섭(Jang Seob Kim),박종현(Jong Hyeon Park) 대한기계학회 2010 大韓機械學會論文集A Vol.34 No.6
본 논문에서는 4 족 보행로봇의 비평탄면 갤로핑 알고리즘을 제안하였다. 몸체의 균형은 지면접촉순간의 지면반발력에 의해 결정되므로 안정된 보행을 위해 발과 지면과의 접촉력을 제어하였다. 각 발의 지면접촉힘을 제어하기 위해 우선 요구되는 지면접촉힘을 결정하고 지면접촉구간에서 실제 접촉힘과 비교하고 그 차이에 따라 발의 궤적을 수정하게 된다. 요구되는 지면접촉력은 원하고자 하는 각운동량 및 선형운동량의 변화에 따라 결정되며, 각 발에 요구되는 접촉힘으로 퍼지로직에 의해 분배된다. 리커다인을 이용한 동역학 모델 시뮬레이션을 통해 본 논문에서 제안된 방법이 비평탄면에서의 안정적인 보행에 적합함을 검증하였다. This paper proposes a control algorithm for quadruped robots moving on irregularly sloped uneven surfaces. Since the body balance of a quadruped robot is controlled by the forces acting on its feet during touchdown, the ground reaction force (GRF) is controlled for stable running. The desired GRF for each foot is generated on the basis of the desired galloping pattern; this GRF is then compared with the actual contact force. The difference between the two forces is used to modify the foot trajectory. The desired force is realized by considering a combination of the rate change of the angular and linear momenta at flight. Then, the amplitude of the GRF to be applied at each foot in order to achieve the desired linear and angular momenta is determined by fuzzy logic. Dynamic simulations of galloping motion were performed using RecurDyn; these simulations show that the proposed control method can be used to achieve stable galloping for a quadruped robot on irregularly sloped uneven surfaces.
만성 간질환 및 간경변증에 동반된 간세포암 환자에서 혈청 보체치 측정의 의의
신창록(Chang Rok Shin),전용철(Yong Cheol Jeon),함준수(Joon Soo Hahm),이종철(Jong Chul Rhee),이민호(Min Ho Lee),이동후(Dong Hoo Lee),기춘석(Choon Suhk Kee),박경남(Kyung Nam Park) 대한내과학회 1991 대한내과학회지 Vol.40 No.2
N/A Serum complement levels were evaluated retrospectively in 68 patients with chronic liver diseases: 21 patients with chronic active hepatitis, 25 patients with liver cirrhosis, and 22 patients with hepatocellular carcinoma in liver cirrhosis. There was no significant difference in serum complement levels between the chronic active hepatitis patients and the control group. Serum complement levels were significantly reduced in the liver cirrhosis group compared with the chronic active hepatitis and normal control groups, while hepatocellular carcinoma in the liver cirrhosis group showed significantly high serum complement levels compared with the liver cirrhosis only group. Serum C3 levels correlated well with the serum albumin levels and prolonged prothrombin times in chronic active hepatitis and liver cirrhosis patients but not in the hepatocellular carcinoma patient group. The cutoff values of the complements for detection of hepatocellular carcinoma in patients with liver cirrhosis were set according to a retrospective study. Based on these data, a prospective study was performed to detect hepatocellular carcinoma in 58 patients with liver cirrhosis. The positive predictive values, negative predictive values, and accuracies of the complements were as follows: 83.3%, 79.4%, and 81.0% for C3, 87%, 80.0%, and 82.8% for C4 respectively. Thus, these data suggest that measuring serum complement levels may be helpful in the follow-up evaluation of patients with chronic liver diseases, and the combination of complements tests and α-fetoprotein test could be useful in the early detection of hepatocellular carcinoma in liver cirrhosis patients.
신창록(Chang-Rok Shin),김장섭(Jang Seob Kim),박종현(Jong Hyeon Park),유홍희(Hong Hee Yoo) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
In this paper, the dependency of energy efficiency on the walking/running pattern and the walking/running period is analyzed though simulations of walk, trot and gallop. A quadruped animal has its own original features in the walking pattern and the walking period for adaptation to the environment. The robot model used in the simulations has three active joints and one passive spring-loaded joint at each leg, which is based on the actual quadruped robot, HUNTER (Hanyang UNiversity TEtrapod Robot), developed in the lab. Also included is the dependency of energy efficiency on the walking period in trot.