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허영무(Young Moo Heo),장성호(Sung Ho Chang),신광호(Kwang Ho Shin),조명우(Myung Woo Cho),제태진(Tae Jin Je) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
In this paper, for manufacturing of a micro metallic gear(outer diameter 800㎛, module 0.1, number of teeth 8), a wire-cutting technology was applied to make 2 cores with small radii for the powder injection molding process. The core fabricated by wire-cut EDM process with wire dia. 50㎛ and 2 cavity mold assembled for PIM process. The stainless steel powders(17-4PH 3F/15F) are used in the powder injection molding process. This process is implemented with the mold fabricated using the injection molding machine(ENGEL). The green parts are de-binded and sintered to get the metal micro gear parts. A little incomplete filling behavior is occurred at the end filling area.
정성원(Sung Won Jung),허태길(Tae Gil Heo),이정민(Jung Min Lee),최평화(Pyong Wha Choi),박제훈(Je Hoon Park),이명수(Myung Soo Lee),김철남(Chul Nam Kim),장석효(Surk Hyo Chang) 대한외과학회 2008 Annals of Surgical Treatment and Research(ASRT) Vol.75 No.2
Purpose: This article compares the results of various methods of inguinal hernia repair in adults. Methods: We retrospectively reviewed the medical records of 473 patients over 20 years of age who received an inguinal hernia repair procedure between January 2000 and June 2007. We analyzed the patients’ clinical factors and outcomes, dividing them into five groups according to method of repair: Bassini group, Lichtenstein group, mesh plug group, Prolene Hernia System (PHS) group, and laparoscopic group. Results: The mean number of used analgesics was significantly smaller in the PHS group than in other groups (P<0.05, PHS group: 0.46, Bassini group: 1.55, Lichtenstein group: 1.20, mesh plug group: 0.82, laparoscopic group: 1.44). The mean operation time was significantly shorter in the PHS group than in the other groups (P<0.05, PHS group: 45.18 min, Bassini group: 59.85 min, Lichtenstein group: 68.20 min, mesh plug group: 66.73 min, laparoscopic group: 83.33 min). Finally, the mean postoperative hospital staywas significantly shorter in the PHS group than in the other groups (P<0.05, PHS group: 2.93 day, Bassini group: 4.96 day, Lichtenstein group: 4.17 day, mesh plug group: 4.01 day, laparoscopic group: 5.11 day). Out of five groups, there was onecase of postoperative recurrence in the Bassini group. Conclusion: Mesh PHS operation is a more preferred method of inguinal hernia repair in adults because it offers a lower postoperative pain, shorter operation time, shorter postoperative hospital stay.
위장관 출혈을 동반한 원발성 양성 소장 간질종양 1 예
서길동(Kil Dong Seo),김명준(Myung Jun Kim),김수형(Su Hyung Kim),김일두(Il Doo Kim),허정호(Jeong Ho Heo),이채원(Chae Won Lee),박상제(Sang Je Park),김상현(Sang Hyun Kim),조성락(Sung Rak Cho) 대한소화기학회 2001 대한소화기학회지 Vol.38 No.5
The origin and clinical behavior of gastrointestinal stromal tumors (GISTs) have been a source of recent speculation and controversy. GIST has been applied to mesenchymal tumors that represent neither their typical leiomyomas nor schwannomas. GISTs are spindle cell tumors occurring mainly in adults with 5-year survivals in 50-56% and 10-year survivals in 35-43%. Because of its indolent and slow-growing nature, it is difficult to define it as malignancy. We report a case of benign stromal tumor of the proximal jejunum presenting melena in a 32-year-old male. Small bowel series and computed tomography of the abdomen revealed submucosal tumor in the proximal jejunum. Histological studies on the surgical resection specimen revealed a gastrointestinal stromal tumor of a benign type with no evidence of metastasis. The patient was treated with local excision of the tumor and is now in a favorable state. (Korean J Gastroenterol 2001;38:371-375)
Ho Jun Lee,Yong Hwan Park,Jae Il Kim,Pyong Wha Choi,Je Hoon Park,Tae Gil Heo,Myung Soo Lee,Chul Nam Kim,Surk Hyo Chang 대한외과학회 2011 Annals of Surgical Treatment and Research(ASRT) Vol.81 No.5
Purpose: Laparoscopic appendectomy has been recognized to have many advantages such as greater cosmetic results, less postoperative pain and shorter hospital stays. On the other hand, the cost of laparoscopic procedures is still more expensive than that of open procedures in Korea. The aim of this study is to compare clinical outcomes and hospital costs between open appendectomy and laparoscopic appendectomy. Methods: Between January 1, 2010 and December 31, 2010, 471 patients were diagnosed with acute appendicitis. Of these, 418 patients met the inclusion criteria and were divided into two groups of open appendectomy (OA) group and laparoscopic appendectomy (LA) group. We analyzed the clinical data and hospital costs. Results: The mean operation time for laparoscopic appendectomy (72.17 minutes) was significantly longer than that of open appendectomy (46.26 minutes) (P = 0.0004). The mean amounts of intravenous analgesics for OA group (2.00 times) was greater than that of LA group (1.86 times) (P < 0.0001). The complication rate was similar between the two groups (OA, 6.99% vs. LA, 10.87%; P = 0.3662). The mean length of postoperative hospital stay was shorter in LA group (OA, 4.55 days vs. LA, 3.60 days; P = 0.0002). The mean total cost covered by the National Health Insurance was more expensive in LA group (OA, 1,259,842 won [Korean monetary unit] vs. LA, 1,664,367 won; P = 0.0057). Conclusion: Clinical outcomes of laparoscopic appendectomy were superior to that of open appendectomy even though the cost of laparoscopic appendectomy was more expensive than that of open appendectomy. Whenever surgeons manage a patient with appendicitis, laparoscopic appendectomy should be considered as the procedure of choice.
최평화(Pyong Wha Choi),이정민(Jung Min Lee),허태길(Tae Gil Heo),박제훈(Je Hoon Park),이명수(Myung Soo Lee),김철남(Chul Nam Kim),장석효(Surk Hyo Chang) 대한외과학회 2008 Annals of Surgical Treatment and Research(ASRT) Vol.74 No.6
Anorectal trauma associated with retained rectal foreign body is an infrequent clinical problem, but presents a challenge to physicians taking care of patients with this problem. We report a case of rectal foreign body (glass cup) extracted by laparotomy. A 49-year-old male with a history of alcoholism presented to the emergency room four days after inserting a glass cup into his rectum. He complained of vague anal pain and failure to pass flatus or stool for four days. He had attempted to extract the glass cup using various methods (digital, instrumental manipulation, enema), none of which was successful. Computed tomography revealed a glass cup lodged in the rectum, without complication. The patient was brought to the operating room, administered spinal anesthesia, and placed in lithotomy position after failure of extraction in the emergency room. Although the object was palpable, it could not be extracted either manually or by the use of forceps. We decided to perform an emergent laparotomy under general anesthesia. After the abdomen was opened, an attempt was made to milk the object toward the distal rectum. However, this proved to be impossible secondary to severe rectal mucosal edema. The glass cup was eventually extracted through performing a colotomy at the rectosigmoid junction, with primary repair. The patient’s postoperative course was uneventful, and he was discharged on the eighth postoperative day.
( Ho Jun Lee ),( Yong Hwan Park ),( Jae Il Kim ),( Pyong Wha Choi ),( Je Hoon Park ),( Tae Gil Heo ),( Myung Soo Lee ),( Chul Nam Kim ),( Surk Hyo Chang ) 대한내과학회 2011 대한내과학회지 Vol.81 No.5
Purpose: Laparoscopic appendectomy has been recognized to have many advantages such as greater cosmetic results, less postoperative pain and shorter hospital stays. On the other hand, the cost of laparoscopic procedures is still more expensive than that of open procedures in Korea. The aim of this study is to compare clinical outcomes and hospital costs between open appendectomy and laparoscopic appendectomy. Methods: Between January 1, 2010 and December 31, 2010, 471 patients were diagnosed with acute appendicitis. Of these, 418 patients met the inclusion criteria and were divided into two groups of open appendectomy (OA) group and laparoscopic appendectomy (LA) group. We analyzed the clinical data and hospital costs. Results: The mean operation time for laparoscopic appendectomy (72.17 minutes) was significantly longer than that of open appendectomy (46.26 minutes) (P = 0.0004). The mean amounts of intravenous analgesics for OA group (2.00 times) was greater than that of LA group (1.86 times) (P < 0.0001). The complication rate was similar between the two groups (OA, 6.99% vs. LA, 10.87%; P = 0.3662). The mean length of postoperative hospital stay was shorter in LA group (OA, 4.55 days vs. LA, 3.60 days; P = 0.0002). The mean total cost covered by the National Health Insurance was more expensive in LA group (OA, 1,259,842 won [Korean monetary unit] vs. LA, 1,664,367 won; P = 0.0057). Conclusion: Clinical outcomes of laparoscopic appendectomy were superior to that of open appendectomy even though the cost of laparoscopic appendectomy was more expensive than that of open appendectomy. Whenever surgeons manage a patient with appendicitis, laparoscopic appendectomy should be considered as the procedure of choice.
아로니아, 비트, 백년초 분말 첨가 순무 물김치의 품질특성 및 항산화 활성 비교
김선회,김지형,엄선아,한영선,허명제,Kim, Sun Hoi,Kim, Ji Hyeung,Eom, Sun Ah,Han, Young Sun,Heo, Myung Je 한국식품조리과학회 2018 한국식품조리과학회지 Vol.34 No.3
Purpose: This study examined the effects of aronia, beet and prickly pear powder on the properties of mul-kimchi made of turnip. Methods: Each turnip mul-kimchi was made by adding 0.2% aronia, beet or prickly pear powder. After a 24 hour fermentation process at $25^{\circ}C$, it was stored at $4^{\circ}C$. The antioxidant activities and quality characteristics of turnip mul-kimchi during 34 days of storage at $4^{\circ}C$ were compared. The antioxidant activities were evaluated using DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate) and ABTS (2,2'-azinobis-3-ethylbenzothiazoline-6-sulphonic acid) radical scavenging methods, as well as FRAP (ferric reducing antioxidant power) assays and the total polyphenol content. Results: The antioxidant activity of aronia-added turnip mul-kimchi was higher than that of the control and others. The vitamin C content was the highest on day 6, with the following levels: aronia-added turnip mul-kimchi (182.36 mg/kg), beet-added turnip mul-kimchi (171.80 mg/kg), prickly pear-added turnip mul-kimchi (163.80 mg/kg) and control group (158.85 mg/kg). Conclusion: The addition of aronia powder can improve the quality characteristics and antioxidant activities of turnip mul-kimchi.
이홍태 ( Hong Tae Lee ),김재일 ( Jae Il Kim ),최평화 ( Pyong Wha Choi ),박제훈 ( Je Hoon Park ),허태길 ( Tae Gil Heo ),이명수 ( Myung Soo Lee ),김철남 ( Chul Nam Kim ),장석효 ( Surk Hyo Chang ) 대한외상학회 2011 大韓外傷學會誌 Vol.24 No.1
Purpose: Even though traumatic pancreatic injuries occur in only 0.2% to 4% of all abdominal injuries, the morbidity and the mortality rates associated with pancreatic injuries remain high. The aim of this study was to evaluate the clinical outcomes of traumatic pancreatic injuries and to identify predictors of mortality and morbidity. Methods: We retrospectively reviewed the medical records of 26 consecutive patients with a pancreatic injury who underwent a laparotomy from January 2000 to December 2010. The data collected included demographic data, the mechanism of injury, the initial vital signs, the grade of pancreatic injury, the injury severity score (ISS), the revised trauma score (RTS), the Glasgow Coma Scale (GCS), the number of abbreviated injury scales (AIS), the number of associated injuries, the initial laboratory findings, the amount of blood transfusion, the type of operation, the mortality, the morbidity, and others. Results: The overall mortality rate in our series was 23.0%, and the morbidity rate was 76.9%. Twenty patients (76.9%) had associated injuries to either intra-abdominal organs or extra-abdominal organs. Two patients (7.7%) underwent external drainage, and 18 patients (69.3%) underwent a distal pancreatectomy. Pancreaticoduodenectomies were performed in 6 patients (23.0%). Three patients underwent a re-laparotomy due to anastomosis leakage or postoperative bleeding, and all patients died. The univariate analysis revealed 11 factors (amount of transfusion, AAST grade, re-laparotomy, associated duodenal injury, base excess, APACHE II score, type of operation, operation time, RTS, associated colon injury, GCS) to be significantly associated with mortality (p<0.05). Conclusion: Whenever a surgeon manages a patient with traumatic pancreatic injury, the surgeon needs to consider the predictive risk factors. And, if possible, the patient should undergo a proper and meticulous, less invasive surgical procedure. (J Korean Soc Traumatol 2011;24:1-6)