관골 골절에 따른 합병증에 관한 임상적 연구

유준영,양병은,송상훈,엄기훈 大韓顎顔面成形再建外科學會 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.4

The nasal and zygoma bone are parts of frequently fracturing of facial bones because of anatomically protrusion. Of facial bone fractures, nasal bone is at the high level of incidence rate. But zygoma fracture that anatomical characteristics increase the incidence rate also is occupied considerable part of the facial bone fracture. The outline of face is decided by form of underlying skeletal structure, of that, zygoma plays an important role in. Zygoma is closely attached to surrounding anatomic structure as orbit, maxillary sinus. Aesthetic and functional disturbance are developed by zygoma fracture from trauma, complications, as facial asymmetry, trismus, sensory disturbance, epistaxis, periorbital hemorrhage, diplopia etc, are developed. The patterns of complications following displacement of fractured fragment of zygoma by trauma are slightly different.

다공질 실리콘 카바이드의 제작 및 광발광 성질

이기환,오제직,최석남,박병빈,이태호,김영유 공주대학교 사범대학 과학교육연구소 1998 과학교육연구 Vol.29 No.1

p-type α-SiC(4H, 6H, 15R polytype)를 사용하여 다공질 실리콘(porous silicon; PS)의 제작방법과 유사하게 HF/H₂O/C₂H??OH 용액에서 전기화학적으로 에칭을 하여 광발광 특성을 가지는 다공질 실리콘 카바이드(porous silicon carbide; PSC)를 제작하였다. PSC의 다공질의 분포는 전류밀도가 증가할수록 증가하고 다공질의 크기는 감소하였으며 광발광(photoluminescence; PL) 스펙트럼의 분석을 통해 전극 표면에서의 산화반응은 공급되는 전자의 양과 전류밀도에 의존하며 전류밀도가 증가할수록 전극의 산화반응은 억제된다는 결과를 얻었다. Porous silicon carbide(PSC) having photoluminescence(PL) can be prepared by a technique very similar to that used in porous silicon preparation, by electrochemical etching of crystalline p-type α-SiC(4H, 6H, 15R polytype) in ?? solution. The results show that porous distribution increase with increasing of the current densities while pore size decrease with that. Through the PL spectra analysis anodic oxidation of electrode surface was dependent on the amount of provided electrons and the current densities and inhibited with increasing of the current densities.

악교정 수술후 자가통증조절장치(Patient-Controlled Analgesia)의 사용 효과에 관한 연구

양병은,유준영,송상훈,엄기훈 大韓顎顔面成形再建外科學會 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.4

The concept of PCA(Patient Controlled Analgesia) was first described in 1968, by Sechzer. The earliest descriptions of actual self-administered PCA machines were by Forrest et al. In gastric bypass surgery, cesarian section, orthopedic surgery etc, PCA is widely used in the control of postoperative pain. Previous Studies have shown that PCA provides effective pain-control for the postoperative patient. The postoperative pain-control is a problem that should be solved in surgery. Especially in orthognathic surgery, it is not same as in the case of maxillofacial trauma surgery or of tumor surgery : most orthognathic surgery patients are under operation not accustomed to pains, and difficulties in pain-complaint due to IMF(Intermaxillary fixation), postoperative nausea, and vomiting are additional problem. In this study, we have compared PCA and IM analgesics with respect not only to time request but also to the quality of postoperative pain control.

Antiangiogenic Activity of Bupleurum longiradiatum on human umbilical venous endothelial cells

You, Young-Jae,Lee, Im-Seon,Kim, Yong,Bae, Ki-Hwan,Ahn, Byung-Zun The Pharmaceutical Society of Korea 2002 Archives of Pharmacal Research Vol.25 No.5

The ethyl acetate fraction of Bupleurum longiradiatum was found to have an inhibitory effect on the tube-like formation of human umbilical venous endothelial (HUVE) cells. The active compounds, isolated from the fraction, were identified as acetylbupleurotoxin (P1) and bupleurotoxin (P2). The compounds P1 and P2 completely inhibited the tube-like formation of HUVE cells at 30 ${\mu}g$/ml, below the cytotoxic concentration. But, they did not exhibit antitumor activity on BDF1 mice bearing Lewis lung carcinoma cells despite their antiangiogenic activity.

A Case report of peritoneal myoma : Parasitic myoma and recurrent peritoneal leiomyomatosis

( You Jin Kim ),( Geon Woo Lee ),( Byung Hun Kang ),( Min-a Lee ),( Ki Hwan Lee ) 대한산부인과학회 2020 대한산부인과학회 학술대회 Vol.106 No.-

Objective: Present an unusual case Target: Beginning practicioners Methods: Peritoneal leiomyomatosis and parasitic myoma was considered rare gynecologic disease. However, the cause and pathophysiology are differenct, both are found in theperitoneal cavity and the treatment is the same as myomectomy. Results: Here, we report a rare case of parasitic myoma and recurrent peritoneal leiomyomatosis. Conclusion: These rare case of peritoneal myoma was successfully treated with the myomectomy.

Percutaneous Coronary Intervention Versus Coronary Artery Bypass Grafting in Patients with Coronary Artery Disease and Diabetic Nephropathy: A Single Center Experience

( Ki Sun Bae ),( Hyeong Cheon Park ),( Byung Seung Kang ),( Jong Won Park ),( Nu Ri Chon ),( Kyung Jin Oh ),( Young Won Yoon ),( You Sun Hong ),( Sung Kyu Ha ) 대한내과학회 2007 The Korean Journal of Internal Medicine Vol.22 No.3

Background: Patients with diabetic nephropathy (DN) and coronary artery disease (CAD) represent a subset of patients with high cardiovascular morbidity and mortality. The optimal revascularization strategy using either percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) remains controversial. The purpose of this study was to compare the clinical outcomes of PCI to CABG in DN patients with CAD. Methods: The clinical and angiographic records of DN patients with CAD who underwent either CABG (n=52) or PCI (n=48) were retrospectively analyzed. Results: The baseline characteristics were similar in the two groups except for the severity of the CAD. At 30 days, the death rate (PCI: 2.1% vs. CABG: 9.6%, p=0.21) and major adverse cardiac events (MACE) rate (PCI: 2.1 % vs. CABG: 9.6%, p=0.21) were similar in comparisons between the PCI and CABG groups. At three years, the death rate (PCI: 18.8% vs. CABG: 19.2%, p=0.94) was similar between the PCI and CABG groups but the MACE rate (PCI: 47.9% vs. CABG: 21.2%, p=0.006) was higher in the PCI group compared to the CABG group. In addition, the repeat revascularization rate was higher in the PCI group compared to the CABG group (PCI: 12.5% vs. CABG: 1.9%, p=0.046). Conclusions: The CABG procedure was associated with a lower incidence of MACE and repeat revascularization for up to three years of follow-up in DN patients with CAD. However, the overall survival rate was similar in the CABG and PCI groups. Therefore, CABG may be superior to PCI with regard to MACE and repeat revascularization.

Analysis on the Wind Flow Measuring of Surrounding Areas in Accordance with Installation of Road Facilities

You, Jang Youl,Nam, Byung Hee,Park, Hyeon Ku,You, Ki Pyo Trans Tech Publications, Ltd. 2018 Applied mechanics and materials Vol.878 No.-

<P>As 70% of the terrain of Korea consists of mountains, it is required to incorporate embankments, bridges and tunnels, etc. into road construction plans. The change in wind flow caused by the construction of embankment, in particular, has led to the increase of wind flow damage. In this study, a research was conducted on the method to facilitate wind flow, changed by the road embankment using culvert. There were a total of 52 points, of which 26 points were in front of the road embankment and 26 points in the back of the road embankment. When the number of two culverts were the same, the wind speed around the culvert was greater by more than 5% ~ 40% in the culvert size 6.0m x 4.5m than in the culver size 3.0m x 2.5m. The findings of the experiment indicates that the reduced wind speed of the wind flow entering and passing through the inlet of culvert can mitigate the congestion of wind flow that would otherwise be caused by the installation of the culvert.</P>

HCV, Acute, LT : Liver Abscess Mimicking Liver Metastasis

( Ki You Myo ),( Byung Su Kim ),( Jun Hwa Song ),( Yong Kook Lee ),( Jeong Bae Park ),( Jeong Ill Suh ) 대한간학회 2013 춘·추계 학술대회 (KASL) Vol.2013 No.1

Background: In patient with mass in liver, it will suspected as hepatoma, cholangiocarcinoma, liver metastasis or liver abscess. Differential diagnosis of these disease is not simply. We present a case of liver abscess that mimicked metastasis in patient with liver mass. Case: A 77-year-old woman was visited to an OPD for evaluation and biopsy of liver mass. The patient had no history of alcoholic use. She had abdominal pain and febrile sense before 3 days. She visited local medical clinic and about 5cm sized liver mass was detected in liver ultrasonography. She was transferred to our hospital. Initial vital sign were: blood pressure 110/70 mmHg, heart rate of 88 beats/min, respiratory rate of 20 breaths/min, and temperature of 36.8 μL. The patient was alert and fully oriented. Laboratory studies revealed a white blood cell count 11,110/μL, hematocrit of 34.7%, platelets of 124,000, BUN of 27 mg/dL, creatinine of 0.8 mg/dL, AST of 53 IU/L, ALT of 62 U/L, serum albumin of 3.3 g/dL, alpha-fetoprotein of 0.6 ng/mL, CA19-9 of 14.760 U/mL. Initial abdominal computed tomography showed about 7×5 cm sized liver mass on left hepatic lobe. The patient made reservation for liver biopsy and taken antibiotics. After 2 weeks, the patient was visited to an OPD again for liver biopsy. Follow up abdominal computed tomography revealed that the mass had decreased in size to 3×2 cm. Follow up laboratory studies revealed a white blood cell count 6,840/μL, hematocrit of 32.5%, platelet 477,000, AST of 24 U/L, ALT of 10 U/L, serum albumin of 3.9 g/dL, CA19-9 of 6.6 U/mL, amoeba antibody was positive. We used metronidazole for 44 days, and the mass disappeared at follow up abdominal computed tomography. Now, the patient is still healthy without any complication. Conclusions: The reason of liver mass is variable. For new lesions in liver, biopsy is commonly performed to confirm the diagnosis. Liver abscess typically is the result of a pyogenic or amoebic infection and cause symptoms including fever and leukocytosis. But liver abscess does not have any pathognomonic imaging appearance. Infectious etiology is generally suspected based on a combination of clinical symptoms, laboratory abnormalities, medical history and corresponding imaging findings. Our case may serve as precautionary example that liver abscess can mimic metastasis. So, to diagnosis of liver mass we should consider another symptoms and signs.

LC : Spontaneous Ruptured Umbilical Hernia in a Patient with Alcoholic Cirrhosis

( Byung Su Kim ),( Ki You Myo ),( Jun Hwa Song ),( Yong Kook Lee ),( Jeong Bae Park ),( Jeong Ill Suh ) 대한간학회 2013 춘·추계 학술대회 (KASL) Vol.2013 No.1

Background: In patient with ascites due to alcoholic cirrhosis, spontaneous perforation of an umbilical hernia is unusual but potentially life-threatening event. We present a case of a cirrhotic patient with long standing tense ascites and an umbilical hernia who experienced evisceration of a section of the small intestine through the hernia. Case: A 55-year-old man was visited to an OPD due to sudden onset of central abdominal discomfort. The patient had a history alcoholic cirrhosis, with gradual development of tense ascites over the past years. He had inflammation of hernia area and oozing before 1 week. Initial vital sign were: blood pressure 120/80 mmHg, heart rate of 95 beats/min, respiratory rate of 20 breaths/min, oxygen saturation of 97%, and temperature of 36.5μL. The patient was alert and fully oriented. Laboratory studies revealed a white blood cell count 8,400/μL, hematocrit of 27%, platelets of 215,000, sodium of 124 mmol/L, potassium of 4.8 mmol/L, chloride of 93 mmol/L, BUN of 21mg/dL, creatinine of 1.2 mg/dL, AST of 26 IU/L, ALT of 4 U/L, serum albumin of 2.0 g/dL, and internal normalized ration of 1.84. The patient was taken directly to the operating room. The hernia sac and ulcerated umbilical skin were excised and the incision closed primarily. After surgery he was haven ventilation care due to dyspnea and fever. The patient had sepsis during ventilator care, we used teicoplanin to cover Methicillin-Resistant Staphylococcus aureus. Despite treatment, septic condition aggravated and developed to ARDS. He died after 2 weeks. Conclusions: In patient with cirrhosis and tense ascites, umbilical hernia can break down completely, with expulsion of intraabdominal contents. It is rare but life threatening. Potential complications are incarceration or strangulation of bowel, and the development of peritonitis, and sepsis. Herniorrhapy is simple procedure, but in liver cirrhosis patient, surgical repair itself incurs great risk who as a rule already have decompensated liver disease. The physician must think of choice medical treatment or surgery.

Fabrication of TFTs for LCD using 3-Mask Process

You, Soon-Sung,Cho, Heung-Lyul,Kwon, Oh-Nam,Nam, Seung-Hee,Chang, Yoon-Gyoung,Kim, Ki-Yong,Cha, Soo-Yeoul,Ahn, Byung-Chul,Chung, In-Jae The Korean Infomation Display Society 2005 Journal of information display Vol.6 No.3

A new technology for reducing photolithography process from a four step to a three step process in the fabrication of TFT LCD is introduced. The core technology for 3-mask-TFT processes is the lift-off process [1], by which the PAS and PXL layers can be formed simultaneously. A different method of the lift-off process was developed in order to enhance the performance of efficiency with conventional positive and not negative PR which is the generally used in other lift-off process. In addition, the removal capacity of the ITO/PR in lift-off process was evaluated. The evaluation results showed that the new process can be run in conventional TFT production condition. In order to apply this new process in existing TFT process, several tests were conducted to ensure stability of the TFT process. It was found that the outgases from PR on the substrate in ITO sputtering chamber do not raise any problem, and the deposited ITO film beside the PR has conventional ITO qualities. Furthemore, the particles that were produced due to the ITO chips in PR strip bath could be reduced by the existing filtering system of stripper. With the development of total process and design of the structure for TFT using this technology, 3-mask-panels were achieved in TN and IPS modes, which showed the same display performances as those with the conventional 4mask process. The applicability and usefulness of the 3-mask process has already verified in the mass production line and in fact it currently being used for the production of some products.