• Journal of the Korean Society of Radiology
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• v.16 no.2
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• pp.87-94
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• 2022

In this study, 61 patients who underwent coronary angiography from March 2018 to August 2019 were divided into Group I (Radial, n=34 patients) and Group II (Femoral, n=27 patients), and compared and analyzed methods using radial and femoral arteries when coronary angiography was performed. As a result of comparative analysis, Catheter usage was reduced in the examination using radial artery, and in the abnormal shape of blood vessels, Loops arterial abnormalities were more in the radial artery (20.6% vs, 0%, p<0.05), and it was found that the abnormal shape of the radial vessels increased with age. 60s, 70s, 80s, 90s or older (0%, 18.2%, 25.0%, 100%)

• Journal of Chest Surgery
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• v.37 no.10
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• pp.839-844
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• 2004

Background: The Y-composite graft of internal thoracic artery and radial artery is commonly used in coronary bypass surgery. The aim of this study is to look for a way to raise the free flow of the internal thoracic graft and to see flow dynamics of the Y-graft. Material and Method: In 15 patients undergoing coronary bypass surgery, free flow of the in-situ internal thoracic artery graft was measured using two different papaverine application methods; extraluminal papaverine spray in 7 patients and intraluminal papaverine injection in 8. In 18 other patients for whom the Y-graft was used, total free flow and flow changes from the two ends were measured. Result: The free flow of the in-situ internal thoracic artery graft almost doubled with internal papaverine injection than with external papaverine spray $(47.7\pm9.6$ mL/min $vs.100.8\pm26.3$ mL/min, p<0.001). Total flow of the Y-composite graft was significantly more than either flow of the internal thoracic artery end or radial artery graft end $(173.3\pm45.3$ mL/min vs. $121.1\pm34.3$ mL/min or $117.5\pm42.8$ mL/min). When both ends of the Y-composite graft were opened, free flows from the two ends were similar $(85.4\pm27.8$ mL/min vs: $87.9\pm42.4$ mL/min, p=0.772). The flow of one end of the Y-composite graft was increased significantly by clamping of the other-end than when both ends were opened. Conclusion: Intraluminal papaverine injection is very effective in raising free flow of the internal thoracic artery graft, and the free flow of the Y-composite graft of in-situ internal thoracic artery and free radial artery graft is more than that of the in-situ internal thoracic artery graft. The flow of one end flow of the Y-graft may be altered by the flow change of the other end.

• Vending industry
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• v.4 no.4 s.12
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• pp.82-84
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• 2004

사람들은 본능적으로 편리한 것을 좋아 한다. 인류문명의 발달이 보다 편리함을 지향하는 인간의 욕구에 의해 발달되었다 해도 과언이 아닐 것이다. 지금 이 순간에도 첨단 산업 기술력들이 인간을 보다 편리하게 하기 위해 촌각의 경쟁을 벌리고 있다. 우리 일상에 밀접한 세탁의 경우도 마찬가지이다. 사람의 노동력에 의존하던 세탁은 이제는 문명의 이기인 세탁기로 거의 대체되어 버렸다. 세탁기는 인간의 노동력을 대신한 탓에 산업적으로 큰 성장을 하였고, 보다 편리하고 신속한 방향으로 계속 진화되어 간다. 이러한 시류 속에 셀프 세탁 전문점 사업도 맥을 같이 한다. 세탁을 보다 편리하고 신속하게 할 수 있는 수단으로서 소비자 니즈를 충족시키며 새로운 틈새시장을 찾으려 한다. 그런데 과연 집에서 하는 세탁보다 외부에서 하는 세탁이 편리할 수 있을까? 사업성공을 위해 중요한 점은 셀프 세탁이 장소적 이동의 번거로움을 극복할 만큼의 메리트를 반드시 제공해야 한다는 점이다. 가정 내 세탁 문화를 매장 문화로 전환시키기 위한 도전은 이런 점에서 획기적이다. 이 과감한 시도가 과연 틈새시장으로서 자리매김할 지는 미지수. 하지만 사업주체인 코리아핫픽스는 사업성공에 대한 자신감을 가지고 있다. 셀프 코인세탁 문화도 얼마든지 큰 파급력을 가질 수 있다고 낙관하고 있는 것. 궁금하지 않을 수 없는 신조류사업으로서 가능성, 그 실체는 무엇인가.

• Korean journal of communication and information
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• v.74
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• pp.7-37
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• 2015

The study explores how the discourses on game addiction, which emphasize diligence and sincerity for labor and self-control, and professional gamers, who are trapped in pleasures of playing games in the virtual world, cohabit in Korean society. Progamers have grown from entertainment industry enlarged along with the current of the economic 'postmodernization,' mentioned by Hardt and Negri(1997; 2001; 2004). Hardt and Negri have elaborated on the economic postmodernization with the notion 'immaterial labor,' which blurs the line between economic (instrumental) actions and humane qualities as well as pertains to the potentiality of resistant practices against the power of modernity. From this perspective, progamers' labor is understood as 'affective labor,' an aspect of immaterial labor with the potentiality of resistance. However, meticulous examination of progamers' labor in this study reveals that progamers control their affects systematically, strategically, and rationally for their materialistic success. Progamers, while performing postmodern mode of labor, are subordinate to modern work ethics, which lead them to lose the potentiality of resistance. Consequently, while the discourses on game addiction and progamers outwardly form sharp contrast to each other, the two indeed are placed in tandem in the vein of modern work ethics of Protestantism.

• Applied Biological Chemistry
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• v.29 no.3
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• pp.266-272
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• 1986

The contents of water soluble ${\beta}-glucan$ were $1.4{\sim}4.0%$ in grains of 4 recommended varieties, and $0.3{\sim}0.6%$ in their malt. The ${\beta}-glucan$ content was subject to environmental factors such as cultivating region and nitrogen fertilizer level. The ${\beta}-glucan$ content of grains was positively correlated with the viscosity, but negatively with the protein and total gum contents. The ${\beta}-glucanase$ activity was $11.0{\sim}20.0$ sec as the reduced flow time in malt of 4 recommended varieties and was also subject to environmental factors. ${\beta}-Glucanase$ activity showed the highest level after the 6th day during malting. The ${\beta}-glucanase$ activity in malt was positively correlated with malt extract, but negatively with the residual ${\beta}-glucan$ content. The protein content in malt was negatively correlated with malt extract, but positively with the diastatic power.

• Korean Journal of Social Welfare
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• v.67 no.3
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• pp.281-303
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• 2015

This study examined the interdependent retirement decision between husbands and wives. Since most of retirees in Korea retired by involuntary reasons such as health problems, it purposes to test whether the involuntary retirement of husbands(wives) influences the retirement decision of wives(husbands). Using data from 4th Korean Longitudinal Study of Ageing Panel, it conducted probit and multivariate probit analysis on 1,038 dual-earner couples aged 51~76 to test interdependence of couples' retirement. The results showed that husbands who have retired wife were more likely to retire. It also proved that involuntary retirement of spouse is a significant predictor of early retirement decision, though the direction of the effect is reversed by gender. Wives were more likely to retire when husband were retired involuntarily, while husbands were more likely to stay in labor market. These findings helped to understand the retirement decision of aged couples in Korea and brought suggestion on labor market and care policies for aged couples.

• Journal of Labour Economics
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• v.29 no.2
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• pp.117-143
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• 2006

This paper illuminates the patterns of growth and declines in sizes of union membership in metal, chemical, financial, and auto transport sectors in three distinct periods during the last four decades from 1963 to 2003. This paper also calculates union densities in auto assembly, auto supply, and shipbuilding industries of the metal sector, cement, petroleum refining, and pharmaceutical industries of the chemical sector, private banking industry of the financial sector, and city bus industry of the auto transport sector. Such diversities in both sizes of union membership and union densities among sectors and industries turned out to be associated with attitudes and choices of employers and unions in interaction with sector- and industry-specific economic (growth stage and path), institutional (degrees of government intervention), and social (demographic features of employees and prevailing sizes of firms) environment. Such finding shows that theoretical reasonings on sizes of union membership and union densities across sectors and industries in advanced nations are also relevantly useful to analyze the Korean case.

• International Journal of Highway Engineering
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• v.11 no.4
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• pp.117-126
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• 2009

Korea Highway Corporation has played a role of the construction and operation of the highway for the past for 40 years. The private sector since the 90s has made highway construction and operation. Central government and local governments were paid at subsidy in least operating income to 1.5896 trillion won for private operators from 2001 to 2008. Thus, Korea Highway Corporation will have important implications for understanding the cost structure. Korea Highway Corporation, a general analysis of the input element is used efficiently. And the operation of labor and capital estimated highly of the substitution elasticities. Korea Highway Corporation are judged to need financial separation of a strategic outsourcing(business) enabled and the construction(maintenance and management) and business institutions. In addition, currently running at highway the operation of institutions combined to configure a new institution, if that institution invigorate the hi-pass, more of the country's highway believe to be increase operational efficiency.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.41 no.2
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• pp.223-229
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• 1996

To investigate the effect of seeding date, seeding rate, and sprouted seeds on seedling establishment, yield and its components of rice in barley /rice reley cropping as a minimum tillage, Gancheokbyeo rice seeds sowed by hand broadcast in various overlapped days befer barley harvest. The highest rice seedling stand was at sowed on the day just before barley harvest and l00kg per hectare of seeding rate with sprouted seeds. Also number of tiller and panicle showed the similar tendency. Delayed rice heading dates were found 2 days at l0-day overlap, 2 days at 5-day overlap, and 4 days at 0-day overlap before barley harvest compared with machine transplanting rice at just after barley harvest using l0-days old seedling. The culm length of broadcast rice shortened 2∼4cm compared with the transplanting rice. The rice plants lodged slightly at seeding rate l00kg per hectare and at sowed on the day of barley harvest. The rice panicle number increased with later date sowing and higher seeding rate. Number of spikelets per panicle and ripened grains decreased at higher seeding rates. Sprouted seeds and higher seeding rates showed higher rice yield at later sowing dates.

• Journal of Chest Surgery
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• v.40 no.6 s.275
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• pp.448-450
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• 2007

The mortality of left ventricular free wall rupture after acute myocardial infarction is high; however, subactue myocardial rupture can be diagnosed by echocardiogram and the use of the intraaortic balloon pump reduces the incidence of re-rupture. Bleeding from subacute myocardial rupture can be managed by employing fibrin glue and several patches. We report here on a case of successfully managed case of subactue left ventricular free wall rupture after acute myocardial infarction with using the sutureless technique and fibrin glue.