환경산업분야에서의 오존 이용기술

김익곤 한국화학공학회 1991 NICE Vol.9 No.1

핵실험과 지각변동

김익곤,Kim, Ik-Gon 한국기술사회 2011 技術士 Vol.44 No.1

Huge amount of energy produced by an underground nuclear test is released into the surrounding rock. Depending on the properties of the bed rock surrounding the detonation and overlaying it a variety of effects can occur. At some particular depth the increasing amount of material thrown upward is exactly balanced by the decreasing fraction escaping the crater, the crater volume reaches to a maximum. This depth is called the optimum depth of burial and varies somewhat with the geology of the site, being greater for less dense and structurally weaker material.

내고정한 소아 상완골 과상부골절에 대한 임상적 고찰

김익곤(Ig Gon Kim),박상호(Sang Ho Park),송주호(Ju Ho Song),유총일(Chong Ill Yoo) 대한정형외과학회 1985 대한정형외과학회지 Vol.20 No.4

통증치료를 위한 신경차단과 부위 마취시 Anesthesiologist Controlled Sedation 과 Patient Controlled Sedation 의 비교

김익곤(Ik gon Kim) 대한통증학회 1994 The Korean Journal of Pain Vol.7 No.2

N/A The purpose of this study is to evaluate the feasibility, advantages/disadvantages of patient- controlled sedation (PCS) compared to anesthesiologist-controlled sedation (ACS) during neurolytic pain block and regional anesthesia. Forty patients were divided randomly into two groups of 20 patients each. Group l(ACS) received 0.01 mg kg-1 intravenous midazolam and 0.5 μg kg-1 fentanyl intravenously by anesthesiologist just before, 30, and 60 minutes after the procedure to acheive sedation, Group 2 (PCS) patients self-administered a mixture of midazolam (0.4 mg) and fentanyl (20μg) using a syringe type infusion pump (Terumo, Japan) to acheive sedation. Considering the dermographics of patients, the types and durations of procedure performed, the level of average sedation the comfort level were similar in both groups. But the doses of midazolam and fentanyl administerd in group 2 were smaller than those in group 1 (p<0.01). Patients in PCS group showed their level of sedation more proper than did those in ACS group. However, patients in ACS group rated their level of comfort higher than did those in PCS group. The findings of this study indicate that PCS using a combination of midazolam and fentanyl is a fafe and effective technique. More studies are, however, needed to determinc the best choice of drug(s), doses, lock-out intervals, and possible use of continuous infusion with pa- tient-controlled sedation.

Reconstruction plate 릉 이용한 성인 전위성 쇄골 간부 골절의 수술적 치료

김재혁,김익곤,황룡,홍영일 대한골절학회 2000 대한골절학회지 Vol.13 No.4

Purpose: The purpose of this study was to know the usefulness of bony union and faster recovery of shoulder motions by the open reduction and internal fixation with the reconstruction plate for the displaced clavicle shaft fracture of adults. Material and method: From January 1993 to December 1997, for 5 years, we analyzed 28 cases which underwent for a year of displaced clavicular shaft fracture over 11mm after open reduction and internal fixation with the reconstruction plate and supplementary iliac bone graft. Result: At all 28 cases, there were united without delayed union for average 7.2 weeks after operation. Motion of the shoulder joint were returned to normal within 1.8 weeks except two cases who had combined humerus fracture and partial gastrectomy for peptic ulcer. Conclusion: It seems that operative treatment with the reconstruction plate and supplementary bone graft for the displaced clavicle shaft fracture of adults showed effective union and faster recovery of shoulder motions.

수근 주상골 골절의 진단 및 치료

김수곤,김익곤 대한골절학회 1994 대한골절학회지 Vol.7 No.2

The scaphoid fracture is the most common fracture in carpal bones. It' s diagnosis is very difficult because of less symptoms and swelling. But unfortunately it s complications such as nonunion, avascular necrasis, and osteoarthritis were severe. We reviewed 27 cases of the carpal scaphoid fractures treated from March 1989 to March 1993 in Hae-Dong hospital and obtained following results. 1. The highest peak was third and forth decades. 24 cases were male among 27 cases. The most common cause of fracture was outstretched hand injury. 2. The middle third was the most common location(60%) and transverse type fractures were l2 cases(75%) among these fractures. 3. We gained 75% bone union at average 15.4 weeks in proximal 1/3 carpal scaphoid fractures, 93% union at average 12.9 weeks in middle 1/3 fractures, and 100% union at average 11.2 weeks in distal 1/3 fractures. 4. The resufts of treatments were evaluated by Maudsley method. Excellent and good results were 10 of 11 cases in conservative treatment, 13 of 16 cases in operative treatment. According to fracture sites excellent, and good results were 1 of 4 cases in proximal fracture, 14 of 16 cases in middle fracture and all of 7 cases in distal. 5. The complications were 2 cases of nonunion, 3 cases of avascular necrosis and 2 cases of osteoarthritis. 6. In case of delayed diagnosis, the longer duration of treatments were needed, We obtained better results in fresh, undisplaced fractures with thumb spica cast than old displaced fractures. We gained better results in displaced fractures with open reduction and bone graft than conservative methods.

요추부 골절 환자군과 정상군의 골밀도와 골절 역치 비교

김재혁,김익곤,홍영일,김정일 대한골절학회 2001 대한골절학회지 Vol.14 No.2

Purpose : The purpose of this study was to show how bone mineral densities of the lumbar spine decrease with aging, to investigate the relationship between the bone mineral densities of the control and fracture group, and to obtain fracture threshold values. Materials and Method: From January 1995 to December 1999, we measured and evaluated BMD of L3 by DXA in 239 normal volunteers(96 men and 143 women), and in 218 patients with lumbar spine fracture(91 men and 127 women) above 50 years. The Chi-Square test was used for statistical analysis. Results: 1. The average BMD of L3 in control group and lumbar spine fracture group were 0.772±0.030 g/㎠ in male and 0.732±0.089g/㎠ in female and 0.720±0.031g/㎠ in male and 0.692±0.002g/㎠ in female, respectively. 2. The BMD of the control group and fracture group decreased with aging(p$lt;0.05) and were higher in men than in women. There were statistically significant difference(p$lt;0.001). 3. There were statistically significant difference between BMD of the control group and BMD of the lumbar spine fracture group(p$lt;0.05). The BMD were higher in the control group than fracture group. 4. Fracture threshold of the lumbar spine fracture group were 0.867g/㎠ (male:0.898g/㎠, female:0.836g/㎠) according to 90 percentile.

이중 에너지 방사선 흡수 계측법(Dual Energy X-ray Absorptiometry, DEXA)을 이용한 Cortical shaft index(CSI)와 Singh`s index 의 상관성 및 임상적 유용성 비교

김철현,김재혁,김익곤,황룡 대한골절학회 1998 대한골절학회지 Vol.11 No.1

The bone is the dynamic living tissue which is always maintained bone mineral content by bone resorption and formation. Osteoporosis is most common metabolic bone disease which is characterized by decrease of bone matrix, resulting in generally reduced bone mass. For measurement of the degree of osteoporosis, various methods have been used. The Singh' s index and the cortical shaft index of the proximal femur anteroposterior X-ray film are very simple methods to measure degree of osteoporosis. Authors compared Singh s index and cortical shaft index with Dual Energy X-ray Absorptiometry(DEXA) and studied the correlation and clinical usefulness of two indices. We took Singh s index and cortical shaft index in proximal femur A-P view in 103 patients and also performed DEXA, then analyzed and compared each two indices with DEXA. The cortical shaft index had less interpersonal difference and intrapersonal difference than those of Singh s index. The correlation coefficient of CSI(0.660-0.669) was larger than that of Singh s index(0.530-0.590) (p$lt;0.05). We think CSI is more useful method in the diagnosis and grading of osteoporosis than Singh s index.

성인 전위성 쇄골 간부 골절의 수술적 치료

김철현,김재혁,김익곤,황룡 대한골절학회 1998 대한골절학회지 Vol.11 No.2

Clavicle fracture is one of the most common fracture, which had been managed via conservative methods with some exceptions such as nonunion. Operative treatment had been regarded as an important cause of nonunion and poor outcome. Nowadays, however, the goal of fracture treatment has become anatomical reduction, rigid fixation and early rehabilitation for better final results. We managed 43 clavicular shaft fracture which was displaced above 11 mm, with conservative treatment (23 cases) and operative treatment (20 cases) since 1990 to 1995. All patients achieved good union in both group, except 5 nonunions of conservative treatment and no significant difference in union time. By functional evaluation of shoulder by Weitzman 23), final results were excellent in 17, good in 2 case., fair in 1 case with operative treatment and excellent in 12, good in 4, fair in 3 and poor in 4 cases with conservative treatment. It was concluded that early operative treatment of clavicular shaft fracture showed better result than conserative treatment, especially in displaced and comminuted ones.

골육종의 국소관류 화학요법 : 2례 Two Cases

유총일,이철승,김익곤 대한화학요법학회 1985 대한화학요법학회지 Vol.3 No.2

Osteosarcoma is, except for multiple myeloma, the most common of primary malignant bone tumor, and has previously proved resistant to most chemotherapeutic agents. Intensive effects have been made in the past, however, to improve prognoses, and the development of current adjuvant chemotherapeutic regimens correlates with improved overall survival times in patients with osteosarcoma. The authors, in two cases of osteosarcoma, 1) perfused the affected limb with adriamycin, 2) performed amputation, and 3) gave adjuvant chemotherapy, and have since been following up their prognoses.