• 한국축산식품학회지
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• 제23권2호
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• pp.122-127
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• 2003

본 연구는 유화형 소시지 제조시 이용되는 원료육에 대해 돼지 심장근으로부터 획득한 근원섬유 단백질 추출물인 수리미 유사물의 대체첨가가 제품의 품질특성에 미치는 영향을 구명하고자 수행하였다. 그 결과, 원료육에 대해 15% 수리미 유사물을 대체한 처리구가 대조구에 비해 가열감량은 유의적(p<0.05)으로 낮게 나타났고, 보수력은 유의적(p<0.05)으로 높게 나타났다. 전단가 및 경도에 있어서도 수리미유사물의 대체처리구가 대조구에 비해 유의적(p<0.05)으로 낮게 나타났다. 육색에 있어 명도(L)는 수리미유사물을 대체한 처리구가 대조구에 비해 유의적(p<0.05)으로 낮게 나타났으며, a, b값은 유의적인 차이가 나타나지 않았다(p>0.05). 한편, 관능검사 결과 대조구와 처리구간에 향미와 불쾌취에 있어 유의적인 차이가 나타나지 않았지만, 전체적인 기호도에 있어 15% 수리미유사물 대체처리구가 유의적(p<0.05)으로 높은 점수를 얻었다. 이상의 결과를 종합해 볼 때, 유화형 소시지제조시 돼지 심장근에서 획득한 근원섬유 단백질 추출물을 원료육 대비 15%까지 대체하더라도 가열감량을 낮춰 제품 수율을 높일 뿐만 아니라 보수력을 높이고 조직감을 부드럽게 하여 기호성을 증진시키는 효과를 얻을 수 있을 것으로 사료된다.

• Journal of Chest Surgery
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• 제33권3호
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• pp.207-211
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• 2000

Backgroud: Conventional cardiac transplantation with each atrial anastomosis designed by Shumway and associates has been used widely in cardiac transplantation because of its simplicity and efficiency. There have been many reports about the postoperative atrioventricular value regurgitation resulting from the alteration in atrial geometry after cardiac transplantation by Shumway's technique. New surgical technique of direct anastomosis of superior vena cava, inferior vena cava, right pulmonary vein and left pulmonary vein was introduced to overcome the those problems. We performed this study to test the feasibility of this new surgical technique prior to application to clinical practice. Material and Method: Conventional cardiac transplantation was performed on 12 mongrel dogs(Group I) and cardiac transplantation with new surgical mthod of direct anastomosis of SVC, IVC, left and right pulmonary veins was performed on 11 mongrel dogs(Group II). After weaning from cardiopulmonary bypass, we compared the postoperative rhythm, hemodynamic data, and echocardiographic findings between two groups. Result : The cardiopulmonary bypass time and graft ischemic time were 119.0$\pm$4.4 minutes, 162.0$\pm$4.5 minutes respectively in group I, and 140.0$\pm$7.1 minutes, 180.5$\pm$5.4 minutes respectively in group II. The cardiopulmonary time and graft ischemic time in group II were longer than those of group I (p<0.05). There were 3 cases of failure to weaning from cardipulmonary bypass onein group I and two in group II, and this difference was not significant statistically. Sinus rhythm was regained postoperatively in 58% (group I) and 82%(group II), without statistical significant between 2 groups. Postoperative echolcardiography showed 2 cases of tricuspid value regurgitation and 1 case of mitral regurgitation in group I, and no regurgitation of atrioventricular value in group II. Conclusion: Although these was no statistically significant difference between 2 groups, there was tendency of less arrhythmia and less atrioventricular valvular regurgitation in group II. We suggested that the new surgical technique could be a useful strategy in heart transplantation, especially in the case of size mismatching between donor and recipient.

• 한국축산식품학회지
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• 제36권4호
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• pp.523-530
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• 2016

This study investigates the effect of bovine heart surimi-like material (BHSM) used as a back fat replacer, on the physicochemical and sensory characteristics of frankfurter-type sausages. Frankfurter-type sausage with added BHSM had a higher moisture content and lower fat content than the control. In addition, the samples with added BHSM had higher pH, cooking loss and 2-thiobarbituric acid-reactive substance (TBARS) value and lower water exudation than the control. The sausage formulation with 40% BHSM was more effective in delaying lipid oxidation without affecting cooking loss compared to the 60% BHSM treatment sample. Results showed that hardness values increased upon replacement with BHSM, and sausages manufactured with 40% BHSM had higher lightness and lower redness values. Panelists found there were no differences in color, odor, and tenderness scores and the overall acceptability score found that treatment samples containing 20% and 40% BHSM were preferable to the control after storage for 14 d. These results indicate that fat replacement with BHSM was beneficial to the quality of frankfurter-type sausages, and acceptable reduced-fat products can be produced when back fat is replaced with up to 40% BHSM.

• Journal of Chest Surgery
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• 제33권9호
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• pp.707-715
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• 2000

Background: Cold blood cardioplegic solution has been used to protect myocardium during open heart surgery with the hypothesis stating that it provides more oxygen supply to myocardium compared to crystalloid caridoplegic solution. We repeatedly infused cold blood cardioplegic solution to achieve myocardial protection. We biopsied a small portion of papillary muscle of patients with mitral valve replacement or double valve replacement during aortic cross-clamp time and evaluated the method of myocardial protection through the observation of changes in ultrastructure. We then analysed the relationship between changes in ultrasructure and peak postoperative CK-MB value and SGOT value. Material and method: We report observation on changes of myocardial ultrastructure, postoperative CK-MB and SGOT, and electrocardiogram in 31 patients who underwent cardiac operation. There were 11 males and 20 females, and they ranging in age from 28 to 69 years(mean score was 2.08$\pm$0.560, it was 2.37$\pm$0.558 at 40 minutes, and it was 2.36$\pm$0.523 at 70minutes. Mitochondrial score increased significant at 40 minutes. Mean value of postoperative peak CK-MB and SGOT were 37.3$\pm$17.061IU, 144.5$\pm$125.5IU respectively. We were not able to find any new Q were in EKG after the operation. There was no significant relationship between myocardium mitochondrial score and mean value of postoperative peak CK-MB and SGOT. Conclusion: In conclusion, with this study the cold blood cardioplegic solution was incomplete in preserving ultrastructure of myocardium even with satisfactory results in serum enzyme and EKG evaluation.

• Journal of Chest Surgery
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• 제32권11호
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• pp.1031-1035
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• 1999

Background: ATS mechanical valve is a recently introduced pyrolytic carbon bileaflet prosthesis. This report is to evaluate the results of hemodynamic and anticoagulant therapy after ATS valve replacement. Material and Method: From May 1995 to October 1998, 53 patients received 65 ATS prosthesis; 38 Mitral(27-33 mm), 27 Aortic(19-25 mm). 2 CABGs and 5 Tricuspid annuloplasty were taken concomitantly. The follow up period was 769 patient-months(mean 16.2$\pm$10.0), varied from 1 month to 39 months with 92.5% follow up rate. All patients were evaluated with Doppler echocardiography, 7-14 days after operation. Result: NYHA functional class was improved significantly, from 2.6$\pm$0.8 preoperatively to 1.3$\pm$0.4 postoperatively. The average value of peak and mean transvalvular pressure gradients were 25.7$\pm$13.5 mmHg, 12.7$\pm$8.3 mmHg in aortic position. In the mitral position, the average values of peak and mean transvalvular pressure gradient and valve area were 5.9$\pm$2.5 mmHg, 3.1$\pm$0.8 mmHg and 2.9$\pm$0.5 $\textrm{cm}^2$, respectively. In the anticoagulant therapy, mean INR was 2.5$\pm$0.6 in mitral valve replacement and 1.9$\pm$0.5 in aortic valve replacement. There was no anticoagulant related complication. During that period, there were 3 hospital death(5.9%) and 1 late death(1.9%). Conclusion: The early clinical results of the ATS heart valve replacement is quite satisfactory, and low target INR reginmen is safe. And long term follow of hemodynamic characteristics is also necessary.

• 대한예방한의학회지
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• 제11권1호
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• pp.101-108
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• 2007

In the Study of Poem in Health-Preservation, the results were as follows : Though poetry as therapy is a relatively new development in the expressive arts, it is as old as the first chants sung around the tribal fires of primitive peoples. For many centuries the link between poetry and medicine remained obscure. The chant/song/poem is what heals the heart and soul and is used for health-Preservation and the well-being. Poetry Therapy began to flourish in the hands of professional in various disciplines, including rehabilitation, education, library science, recreation, and the creative arts. Mental health professional were exploring the therapeutic value of literary materials, especially of poetry. Their contribution to the emerging discipline was two-fold : 1) emphasis on the evocative value of literature, particularly poetry; and 2) recognition of the beneficial potential of having clients write either their response to poems written by others or original material, drawing on the clients' own experiences and emotions. Especially in Oriental Medicine, the therapy is based on controlling of Mind(心). And it is in harmony with Qi-circulation(氣-循環), so smoothing the circulation of meridians, strengthened Essential-material(精), Qi(氣), Sprit(神).

• 대한인간공학회지
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• 제25권2호
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• pp.11-22
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• 2006

The muscular-skeletal disorders(MSDs) that have become a major issue recently in Korean industrial safety area are mainly caused by manual material handling task. The objective of this study is to provide scientific data for the establishment of work safety standard for Korean workers through the experiments of lifting task under various conditions, in order to prevent the muscular-skeletal disorders in the industrial work site. Eight male college students were recruited as participants. Three different lifting frequencies(1, 3, 5 lifts/min) and three twisting angles(including the sagittal plane and two asymmetric angles; i.e., 0°, 45°, 90°) for symmetric and asymmetric tasks, respectively, with three lifting range from floor to knuckle height, knuckle to shoulder, floor to shoulder height for one hour's work shift using free style lifting technique were studied. The maximum acceptable weight of load(MAWL) was determined under the different task conditions, and the oxygen consumption, heart rate, and RPE were measured or recorded while subjects were lifting their MAWLs. The results showed that: (1) The MAWLs were significantly decreased as the task frequency and task angle increased.; (2) The heart rate, oxygen consumption, RPE significantly increased with an increase in lifting frequency although maximum acceptable weight of lift decreased.; (3) The highest heart rate and oxygen consumption was recorded at the lifting range of floor to shoulder, followed by floor to knuckle and knuckle to shoulder.; (4) The RPE value showed that subjects perceived more exertion at the high frequency rate of lifting task and lifting range of floor to shoulder height. (5) The modeling for MAWL using isometric strength, task angle and lifting frequency were developed. It is expected that use of the results provided in this study may prove helpful in reducing MMH hazards, especially from lifting tasks for Korean, and can be used as a basis for pre-employment screening.

• Journal of Chest Surgery
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• 제32권11호
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• pp.1017-1022
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• 1999

Background: An increasing number of elderly are referred for open heart surgeries(OHS). These patients are assumed to have significantly increased morbidity and mortality because of compromised functional reserves in their vital organs. We reviewed the results of OHS patients who were 70 years old or older. Material and Method: Thirty six consecutive septuagenarians underwent OHS from 1995 to 1997. Operations were coronary artery bypass grafting(CABG) in 26 including 3 left main surgical angioplasty, valve replacement in 7, MVR+CABG in 2, and ASD closure+TAP in 1. Statistical tests were carried out to compare survivor group with nonsurvivor group in respect to risk factors including NYHA functional class, LVEF, emergent operation, IABP support, CPB/ACC time, ventilator time cardiac index, ICU stay and hospital stay for operative mortality. Result: Operative mortality rate and postoperative complication were 16%(6/36) and 50%(18/36). One-year and 3-year actuarial survival rates were 76%. Nine patients(25%) had major complications including third-degree A-V block(2), respiratory failure(1), stroke(3), renal failure requiring dialysis(3) and postoperative hemorrhage(2). The causes of death were pneumonia(1), bleeding(1), acute renal failure(1), low cardiac output(1), third-degree A-V block(1), and ventricular tachycardia(1). The univariate analysis of mortality shows that NYHA class IV, LVEF<40%, lesser values for C.I, and longer time for ventilatory support were associated with the risk factors(p value=0.03, 0.001, 0.007, and 0.014). The emergent operation, CPB/ACC time, IABP support, ICU stay and hospital stay were not significant. Conclusion: We conclude that cardiac operation can be performed in septuagenarians with acceptable outcomes when done in patients with normal to moderately depressed left ventricular function and adequate functional reserves in their vital organs.

• Journal of Chest Surgery
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• 제36권6호
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• pp.379-383
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• 2003

배경: 장기 심장 이식 후에 나타나는 거부반응의 정도와 상태에 대한 정확한 진단은 내심근 조직검사 (endomyocardial biopsy)로 이루어지고 있으나, 이 방법은 환자에 침습적이고 보다 자주 시행하여 감시하기에는 부적합하여, 덜 침습적이고 계속 지속적으로 감시할 수 있는 방법을 찾고자 하였다. 대상 및 방법: 250~300 gm 정도의 백서에서 이소성의 심장이식(heterotopic heart transplantation)을 Ono-Lindsey Method로 시행한 후 1개월 후에 $^{99m}$ Tc-pyrophosphate (PYP) 1.5 mCi를 꼬리 정맥을 통해 주입한 후 스캔(scan)을 시행하고 심장과 척추의 섭취비를 구하여 이식된 심장의 거부반응에 민감하게 반응할 수 있을 지에 대해 조직 검사와 비교관찰 하였다. 걸과: 20마리의 이식된 심장에 $^{99m}$ Tc-PYP스캔에서의 심장/척추 섭취비와 조직 검사 결과를 분석하여 심장/척추 섭취비가 0.09 이상을 거부반응이 있는 것으로 판정하였을 때 20마리에서 진양성 3예, 진음성 12예, 가양성 3예, 가음성 2예로 예민도 (Sensitivity) 60%,특이도(Specificity) 80%의 결과를 얻었다. 걸론: 이식된 장기의 거부반응이 장기이식의 예후에 미치는 중요한 원인이 되므로, 이에 대한 조기 진단할 수 있는 방법으로 $^{99m}$ Tc-PYP스캔이 유용하였으며, 비침습적이고 간단한 검사방법이므로 거부반응 여부를 감시하는 데 도움이 될 것으로 판단된다.

• 한국정밀공학회지
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• 제20권7호
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• pp.217-226
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• 2003

Twin screw extruders are the heart of the polymer processing industry. They are used at some stage in nearly all polymer processing operations. This paper is concerned with the basic elements of the extruder design. The proper design of the geometry of the extruder screw is of crucial importance to the proper functioning of the extruder. If the material transport instabilities occur as a result of improper screw geometry, even the most sophisticated computerized control system cannot solve the problem. For this purpose, a characteristic design on the screw flights shape of the closely intermeshing co-rotating twin screw extruder. This paper presents design parameters of double flighted screw and triple flighted screw elements, and characteristics of various screw channel area versus screw diameter ratio, K value, in the barrel of screw extruder.