• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2004년도 추계학술대회 논문집
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• pp.145-149
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• 2004

It is necessary for managing a perfect process for degasing aluminum molten metal according to the increase of a grade of aluminum and its alloy products. There are some methods that have been used to manage a degasing process in recent years, such as an injection method that uses aluminum molten metal powder and chemicals supplier and input method that supplies argon and nitrogen, or chlorine gas by using a gas blow-tube. However, these methods show some problems, and it shows that it is a difficult process to handle. pollution due to the producing a lot of toxic gases like chlorine and fluoride gas. irregular effects, and lowering work efficiency due to the excessive processing time. The problems that are the most fatal are the producing a lot of sludge due to the reaction of aluminum molten metal with chemicals. loss of metals, and decreasing the life of refractory materials. In order to solve these problems. this paper develops a technology that is related to aluminum continuous casting molten metal and monolithic degasing apparatus. A degasing apparatus developed in this study improved the exist ing methods and prevented environmental pollution wi th smokeless. odor less, and harmlessness by using a new method that applies argon and nitrogen gas in which the methods used in the West and Japan are eliminated. The developed method can significantly reduce product faults that are caused by the production of gas and oxidation because it uses a preprocessed molten metal with chemicals. In addition. the amount of the produced sludge can also be reduced by 60-80% maximum compared with the existing methods. Then. it makes it possible to minimize the loss of metals. Moreover. the molten metal processing and settling time is also shortened by comparing it with the existing methods that are applied by using chemicals. In addition, it does much to improve the workers' health, safety and environment because there is no pollution. The improvement of productivity and prevent ion effects of disaster from the results of the development can be summarized as follows. It will contribute to the process rationalization because it does not have any unnecessary processes that the molten metal will be moved to an agitator by using a ladle and returned to process for degasing like the existing process due to the monolithic configuration. There are no floating impurities due to the oxidation caused by the contact with the air as same as the existing process. In addition. it can protect the blending of precipitation impurities. Because it has a monolithic configuration. it can avoid the use of additional energy to compensate the temperature decreasing about 60t that is caused by the moving of molten metal. It is not necessary to invest an extra facilities in order to discharge the gas generated from a degasing process by using an agitator. The working environment can be improved by the hospitable air in the factory because the molten metal is almost not exposed in the interior of the area.

• 유기물자원화
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• 제1권2호
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• pp.287-298
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• 1993

본 연구에서는 우리나라의 동물성 생지방의 발생 실태 및 유통현황에 대해서 조사, 분석하여 제반 문제점을 파악하고 적절한 유통근대화 방안을 제시하였으며, 생지방이 환경에 미치는 영향 등에 대한 연구를 종합적으로 수행하여 최종처리, 재활용 등 효과적인 관리대책을 제시하고자 하였다. 생지방의 발생원은 전국에 산재한 170여개의 도축장과 280여개의 육가공공장을 비롯한 식육점, 음식점 등으로서 식육의 모든 유통과정과 관련성이 크며, 수도권에만 60% 이상의 발생원이 집중되어 있는 것으로 밝혀졌다. 현재전국에서 발생되는 생지방의 1일 발생량은 약 650-750여톤으로 300여명의 수집원이 손수레, 자전거, 오토바이 등의 낙후된 수거 장비를 동원하여 수거하고있으며, 약 60개에 이르는 수집상은 수집원으로부터 생지방을 매입하여 재활용 공장으로 운송하고 있다. 그러나, 유통업계의 현실은 영세성과 전근대적인 경영방법, 거래형태의 무질서 등의 문제점을 내포하고 있으며, 결국 유통체계의 혼란을 야기시켜 정상적인 생지방 재활용업계의 발전을 저해하고 있어 적절한 관리 및 유통구조의 근대화를 위한 행정적인 지원 및 제도적인 장치가 필요한 것으로 사료된다. 유통구조의 근대화 방안으로 효율적인 유통경로가 제시되었으며, 유통산업의 대형화, 계열화 등을 통하여 수거효율의 향상과 유통마진율의 절감효과를 얻을 수 있는 것으로 분석되었다.

• 한국산학기술학회논문지
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• 제19권6호
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• pp.240-251
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• 2018

본 연구는 요양병원 간호사의 도덕적 고뇌와 도덕적 민감성의 정도, 상관관계, 도덕적 고뇌에 영향을 미치는 요인 및 도덕적 고뇌의 경험상황을 파악하기 위해 시행되었다. 연구대상자는 G도에 소재한 6개의 요양병원에 근무하는 간호사 180명으로, 자료수집은 2016년 3월 21일부터 4월 8일까지 시행하였으며 SPSS win 23.0 프로그램을 이용하여 분석하였다. 대상자의 도덕적 고뇌정도는 평균 3.57점, 도덕적 민감성정도는 평균 4.82점이었으며, 도덕적 고뇌와 도덕적 민감성 간에는 유의한 정적 상관(r=.494, p<.001)이 있었다. 요양병원 간호사의 도덕적 고뇌에 영향을 주는 변인은 도덕적 민감성과 윤리적 딜레마 경험여부로 나타났다. 대상자의 도덕적 고뇌 상황 경험은 간호의 질이 보장되지 않은 부적절한 간호행위와 관련된 상황, 비윤리적인 인권문제와 관련된 상황, 부족한 간호 인력과 관련된 상황, 조직 및 국가 차원의 지원 부족과 관련된 상황 등에서 경험한 것으로 나타났다. 따라서 요양병원 간호사의 도덕적 고뇌를 감소시키기 위해서는 도덕적 민감성과 윤리적 문제해결능력을 함께 향상시킬 수 있는 중재방안이 마련될 필요가 있다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제34권2호
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• pp.141-150
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• 2008

We studied 1809 oral cancer patients who visited and were treated in 2002 at the 148 institutions certified as training facilities by the Japanese Society of Oral and Maxillofacial Surgeons, which is composed of 39 dental university hospitals, 44 medical university hospitals, 64 general hospitals, and 1 unknown institution. The patients consisted of 1071 (59.2%) males and 738 (40.8%) females (male:female ratio, 1.45:1), who had a mean age of 65.2 years old. The tongue (40.2%) was the most common site affected, followed by the gingiva (32.7%), buccal mucosa (10.1%), and oral floor (9.0%). There were 6 cases of intraoral multiple cancer. In histopathological examinations, squamous cell carcinoma (88.7%) was the most common type found, followed by adenoid cystic carcinoma (2.1%), and mucoepidermoid carcinoma (1.7%). In addition, non-epithelial tumors comprised 1.8%, among which malignant melanoma was the most common type. Cases classified as T2N0 were the most common (32.1%), followed by T1N0 (21.4%), T4N0 (8.0%), and T2N1 (7.6%). Distant metastasis occurred in 17 patients (1.0%). The sizes of the non-epithelial malignant tumors ranged from 1.0 to 7.0 cm, with a mean size of 3.7 cm.

• 한국산학기술학회논문지
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• 제17권2호
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• pp.446-457
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• 2016

본 연구는 질적 주제 분석방법을 적용하여 간호사신문에서 간호사의 일-가정 양립을 위한 주제가 어떻게 다루어지고 있는지 조사하였다. 자료 수집은 2012년 9월 14일부터 2015년 2월 10일까지 간호사신문 웹 사이트를 통해 수집하였으며, 분석 대상은 2000년부터 2014년까지의 일-가정 양립 관련 기사 총 473건이었다. 연구결과 일-가정 양립 정부정책, 일-가정 양립을 위한 대한간호협회의 활동 등 2개의 주제와 10개의 하부주제가 도출되었다. 일-가정 양립 정부정책으로는 육아 휴가 정책, 자녀양육 지원정책, 근무제도 개선정책, 가족친화적 문화정책이며, 일-가정 양립을 위한 대한간호협회의 활동으로는 다양한 근무형태 도입을 위한 활동, 24시간 직장보육시설 확충을 위한 활동, 유휴간호인력 지원 활동, 건강한 출산 양육환경 조성 활동, 가족친화적인 직장 환경을 위한 활동, 대체인력을 확보하기 위한 활동으로 도출되었다. 지난 15년간 일-가정 양립을 다룬 기사의 수는 양적으로 증가하는 양상이었으며, 국가적 사건이나 사회 분위기에 따라 그 관심의 정도가 다르게 나타났고, 대한간호협회의 활동이 정부의 정책과 유기적인 관련성을 나타냈다. 간호사신문이 일-가정 양립과 관련하여 앞으로 선도해야 할 방향은 양성평등을 대변하는 젠더관점으로의 전환, 모성보호관련 이행이 취약한 실태나 문제점 등을 심층적으로 공론화하는 등 간호사의 입장을 대변해야 함을 시사한다.

• 한국산학기술학회논문지
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• 제18권12호
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• pp.254-263
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• 2017

본 연구의 목적은 노인의 부정적 정서와 비만과의 관계를 파악하여 적정 체중관리를 위한 간호중재 개발 시 기초자료를 제공하기 위함이다. 연구 대상자는 충청북도 J시에 위치한 2개소의 노인 복지관을 이용하는 65세 이상의 노인 216명이었으며, 자료수집은 2017년 8월 14일부터 8월 30일까지 설문지 조사와 신체계측을 통하여 이루어졌다. 연구도구는 CES-D, RULS, BPS를 사용하였으며 수집된 자료는 SPSS 22.0통계프로그램을 이용하여 기술통계, t-test, ${\chi}^2-test$, Fisher' exact test, Pearson's correlation, Logistic regression을 분석하였다. 연구결과 대상자들의 체질량지수의 평균은 $23.59{\pm}3.48$이었으며, 31.9%가 비만인 것으로 나타났다. 정상군과 비만군 사이에 통계적으로 유의한 차이를 보였던 변수는 연령(${\chi}^2=8.16$, p=.003), 성별(${\chi}^2=9.27$, p=.002), 흡연 유무(${\chi}^2=7.78$, p=.004), 우울(t=2.54, p=.012)과 사회적 고립감(t=2.98, p=.003)이었고, 우울 (OR,1.04; 95% CI,1.00-1.09)과 사회적 고립감(OR,1.06; 95%CI,1.02-1.11)은 비만의 위험을 높이는 심리적 요인으로 나타났다. 따라서 노인 인구에서의 비만관리를 위하여 우울과 사회적 관계를 적절히 파악하고 측정해야 하며, 신체적, 정신적, 사회적 영역의 요구를 모두 충족시키는 체중관리 프로그램 및 간호중재의 개발이 필요하다.

• 재활간호학회지
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• 제1권1호
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• pp.111-123
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• 1998

The related factors of the quality of life (QOL) in stroke patients was identified empirically. The subjects were 254 stroke patients who were discharged and taken follow-up care at the outpatient department. In this model, the physical, psychological, and social status were assumed to affect the QOL. And the social support was assumed to moderate these effects. NIH stroke state, ADL, and IADL were used to measure the physical status. Using CES-D, the psychological status was measured. The social status was defined as the job change after stroke attack. The satisfaction with the care by primary caregivers, significant others, and health professionals was measured as the social support. To identify the effect of the physical, psychological, and social status on the QOL, multiple regression analysis was carried out. The psychological and social status were found to be the significant predictors of the QOL(R2=0.27, p=0.00). Next, to identify the moderating effect of the social support, the subjects were divided into two groups, that is, the low social support group and the high social support group. It is found that the predicting variance is different between these two groups. In the low social support group, the psychological, social, and physical status predicted as much as 42% of the QOL. On the contrary, the psychological status predicted only 8% of the QOL in the high social support group. So it is concluded that the social support moderates the effects of the physical, psychological, and social status on QOL. Finally, to identify the social support which moderates those effects, the social support was divided into three classes. Each social support class was divided into the low and high social support group again. In the every class of social support, the difference between two groups was also identified. So the model of the QOL is recommended for the framework of the care for the stroke patients. Also these results support the claim that the long-term facilities for stroke patients are necessary.

• Journal of Trauma and Injury
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• 제25권4호
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• pp.152-158
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• 2012

Purpose: To understand the epidemiology of head trauma and the utilization of brain CT in Korea, we analyzed a national sampling data set, the National Patient Sample obtained from the Health Insurance Review and Assessment Service. Methods: We retrospectively collected and analyzed demographic and clinical data on enrolled patients from the National Patient Sample based on medical claims data for 2009. The data included patient's age, sex, treatment date, diagnosis codes, procedure codes related with CT, holiday or night consultation fee, and fee for emergency management services. Results: In 2009, the estimated population with head trauma was 819,059(1.8%), and the rate of brain CT utilization was 22.4%. Children ages 5 to 15 were the most commonly injured group(22.8%), but had the lowest brain CT utilization(16.5%). The mean age of the estimated population with head trauma was $34.9{\pm}0.5years$ old, and male patients accounted for 60.5% of that population. Intracranial injury was found in 8.6% of all head traumas, and the rate of intracranial injury in children was lower than it was in adults(4.1% vs. 10.9%, p<0.001). Twenty- three percent of patients with head trauma visited the emergency department (ED). More patients with head trauma visited medical facilities in the daytime on weekdays(66.5% vs. 33.5%, p<0.001), but head CT was performed more frequently at night or on weekends/holidays(16.1% vs. 34.7%, p<0.001) There is low incidence of head trauma in the winter in children (p<0.001). In the multivariate logistic regression analysis, patients who were adults, female, or ED visitors were more likely to undergo brain CT (odds ratio (OR): 1.65, 95% confidence interval (CI): 1.47-1.84; OR: 1.40, 95% CI: 1.27-1.54; OR: 7.80, 95% CI: 6.91-8.80, respectively). Conclusion: In this study, we analyzed the national epidemiologic trend for head trauma, and the pattern of utilization of brain CT.

• Journal of Preventive Medicine and Public Health
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• 제1권1호
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• pp.79-86
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• 1968

This paper describes the incidence and some epidemiological features of drowning accident out of a series of our study on the epidemiology of various accidents in Korea. By the daily press it is apparent from the frequent reporting of swimming accidents that the incidence would be high. In the rural areas, there are, at present, about 1,250 artificial lakes and farm ponds to be utlized for rice production. The reservoirs, irrigation ditches and riversides are also used for recreation. In most places facilities for aquatic activities is meager, and safety measures for the prevention of drowning is not sufficiently enforced. In the survey crude data on drownings were collected from the concerned governmental statistic books for the period 1955 to 1967 which were compiled not in a uniform way. Drownings were classfied into two categories, one is accidental drowning, E 929 and the other is due to cataclysm, E 934, according to the WHO international classification of diseases. Epidemiological variables in relation to drowning accident were obtained through qualitative analysis of informations from the popular news papers. The following summary may be drawn; 1. The average number of deaths due to accidental drowning totaled 1,088 annually and the mortality rate per 100,000 population was 3.4, The 42.0% of all drownings were rescued and the remaining were not saved. 2. The sex ratio (M/F) of the victims for all ages was 5 to 1, which had a wide range of difference among the age groups. The young ages less than 20 years occupied 68.0% of all deaths. 3. The percentage distribution of the causes of accidents revealed 31.9% for careless swimming, 45.5% for unskilled, 10.6% for swimmer's cramp and 6.0% for drunked. The distribution of places where accidents occurred showed 88.0% for rivers, water reservoirs, irrigation ditches and 12.0% for regular swimming pools. The seasonal distribution of cases indicated 85.0% of the total were seen during the summer months, June-August, and 50.0% of them occurred on Sundays, 4. The average annual deaths due to cataclysm were 402 and mortality rate per 100,000 population was 1.6, but the number of victims due to cataclysm varied greatly each year. 5. The accident cases due to cataclysm were classified into 60.0% for injuries, 40.0% for deaths. The 26.8% of all deaths were missing cases. 6. The deaths due to either accidental drowning or cataclysm totaled 1,490, and the death rate per 100,000 for the whole country was 5.0.

• 대한수의학회지
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• 제46권4호
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• pp.295-304
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• 2006

Residual materials such as veterinary drugs, environmental contaminants, and pesticides are affecting food safety. High resolution techniques and quality controls are needed to analyze these materials from part per million to part per trillion quantities in food. In order to achieve quality results, standardized methods and techniques are required. Our laboratories were prepared to obtain a certificate of accreditation for ISO/IEC 17025 in the analytical criteria of animal drugs, dioxins, pesticides, and heavy metals. ISO together with IEC has built a strategic partnership with the World Trade Organization with the common goal of promoting a free and fair global trading system. ISO collaborates with the United Nations Organization and its specialized agencies and commissions, particularly those involved in the harmonization of regulations and public policies including the World Health Organization and CODEX Alimentarius for food safety measurement, management and traceability. Our goal was to have high quality analysts, proper analytical methods, good laboratory facilities, and safety systems within guidelines of ISO/IEC 17025. All staff members took requirement exams. We applied proficiency tests in the analysis of veterinary drugs (nitrofuran metabolites, sulfonamide and tetracyclines), dioxins, organophosphorus pesticides, and heavy metals (Cd, Pb, As) to the Food Analysis Performance Assessment Scheme (FAPAS) at Central Science Laboratory, Department for Environment Food and Rural Affairs (DEFRA), England. The results were very satisfactory. All documents were prepared, including system management, laboratory management, standard operational procedures for testing, reporting, and more. The criteria encompassed the requirements of ISO/IEC 17025:1999. Finally, the Korea Laboratory Accreditation Scheme (KOLAS) accredited our testing laboratories in accordance with the provisions of Article 23 of the National Standards Act. The accreditation will give us the benefit of becoming a regional reference laboratory in Asia.