• Asian-Australasian Journal of Animal Sciences
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• 제12권2호
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• pp.287-294
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• 1999

Vitamin and mineral deletion from swine diets can result in reduced growth if done during the period wher muscle and bone development is occurring. Several of the vitamins and minerals decline in the serum during the starter period, suggesting a higher dietary inclusion may be necessary postweaning. Vitamin research with grower-finisher pigs is limited, but results suggest that rapidly growing lean pigs may have a higher dietary requirement for the B vitamins. Several studies have suggested that early weaning and pigs of a lean genotype may have a dietary requirement for vitamin C, CI and Cr. High dietary vitamin E levels are fortified in the diet and seems to be effective in preventing mulberry heart problems in weanling and grower pigs. Organic Se is more effectively retained in muscle tissue than inorganic Se, approximately 20% less is excreted, but the bioavailability of organic Se for glutathione peroxidase activity is only 80 to 90% to that of sodium selenite. The active form of thyroxine (T4) is dependent upon a Se containing enzyme. Withdrawal of vitamins and minerals during the latter part of the finisher period has not affected pig performance responses, but studies with poultry suggest that the vitamin content of the meat may be reduced if the vitamins are withdrawn prior to marketing. High levels of vitamin E have been shown to improve pork quality, by reducing drip loss. Studies with vitamin C and Se have suggested that they may also be involved in pork quality.

• 대한한방내과학회지
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• 제31권4호
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• pp.908-913
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• 2010

Bojungiki-tang is a traditional oriental medicine to boost the immune system. In this study, we investigated the effects of Bojungiki-tang by withdrawal of isolation of VRE colonization. Four cases of post-stroke patients with VRE colonization took Bojungiki-tang and continuously were followed up with stool cultures. After three times negative stool VRE, we withdrew isolation of VRE colonization. One case patient was diagnosed with VRE colonization in another hospital and had no withdrawal during that period. He was admitted to Kyung-hee University Oriental Medicine where he took Bojungiki-tang. After three times negative stool VRE, we withdrew isolation of the patient. These results demonstrate that Bojungiki-tang is effective on boosting immunity level. Further studies are needed to better characterize this protective effect of Bojungiki-tang.

• Asian-Australasian Journal of Animal Sciences
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• 제13권12호
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• pp.1775-1778
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• 2000

Oxytetracycline has been widely used in the cattle industry to control pneumonia, shipping fever, foot rot, bacterial enteritis, and uterine infections. Extensive use of antibiotics in veterinary clinics has resulted in residues in tissue and bacterial resistance to antibiotics. To prevent unwanted drug residues from entering the human food chain, extensive control measures have been established by both government authorities and industries. The demands for reliable, simple, sensitive, rapid and low-cost methods for residue analysis of foods are increasing. In this study, we established a rapid test for tissue residues of oxytetracycline in cattle. The recommended therapeutic dose of oxytetracycline (withdrawal time, 14 days) was administered to 10 cattle. Blood samples were collected from each cow before drug administration and during the withdrawal period. The concentration of oxytetracycline in plasma, determined by a semi-quantitative ELISA, was compared to that of the internal standard, 10 ppb. The absorbance ratio of internal standard to sample (B/Bs) was employed as an index to determine whether the residues in cattle tissues were negative or positive. That is, a B/Bs ratio less than 1 was considered as residue positive and that greater than 1 as negative. Based on this criterion, all plasma samples from cattle were negative to oxytetracycline at pre-treatment. Oxytetracycline could be detected in the plasma treated cattle until day 14 post-treatment. The present study showed that the semi-quantitative ELISA could be easily adapted in predicting tissue residues for oxytetracycline in live cattle.

• 한국컴퓨터정보학회논문지
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• 제15권6호
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• pp.129-138
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• 2010

본 연구는 운동중독이 신체적, 정서적 삶의 질적 가치에 영향을 줄 수 있다는 전제하에 운동참여자의 사회인구학적특성에 따른 운동중독과 정서의 성향을 분석하고 운동중독과 정서는 어떠한 관련성이 있는지를 규명하여 운동참여자의 운동중독을 예방함과 동시에 합리적인 대처방안을 제시하고자 고찰하였다. 그 결과, 운동 참여자들은 테니스를 통하여 본인의 건강 유지 증진에 대한 심리적, 정서적 안녕감이 크게 작용하고 신체적인 기술성취의 중요성으로 인하여 운동중독현상과 더불어 긍정적, 부정적인 정서에도 유의한 영향을 미친다는 결과가 나타났다. 이러한 사실을 상기하여 각 개인에게 긍정적 참여행동을 주지시키는 것은 물론 지도자들은 테니스 운동 참여자들이 보다 긍정적인 운동수행이 되도록 운동 참여행동을 제시하고 이러한 행동을 지속적으로 수행해 나갈 수 있도록 하는 것이 건강을 위한 여가의 한 형태로서 테니스 운동참여가 이루어질 수 있는 올바른 방향이라 사료된다.

• Journal of Hospice and Palliative Care
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• 제25권1호
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• pp.25-41
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• 2022

Purpose: This study investigated trends of nursing research on life-sustaining treatment in South Korea. Methods: The period for data search was set from January 2018 to December 2020. The major search terms used were advance directives and life-sustaining treatment. Of the 492 records identified in the initial search, 461 articles were excluded for various reasons. A total of 31 records were included in the final qualitative analysis. Results: Sixteen studies had nursing students as study subjects, while nine studies had nurses as study subjects. The majority of the studies employed cross-sectional descriptive surveys as their research design. The major themes that emerged from the studies were as follows: attitudes toward withdrawal of life-sustaining treatment, knowledge of and attitudes toward advance directives, perceptions of a good death, and nurses' attitude toward life support care. Most of the studies reviewed concluded that attitudes toward withdrawal of life-sustaining treatment significantly impacted both knowledge of and attitudes toward advance directives and perceptions of a good death. Conclusion: To date, Korea still lacks extensive nursing research concerning life support care. Further research is needed to provide systematic education for nursing ethics and life support care, as well as the introduction of a specialist course. Furthermore, a multidisciplinary approach is necessary to provide diverse support systems and policy measures. In particular, since nurses are directly responsible for providing life support care, nurses' roles should be expanded in accordance with the Act on Decisions on Life-Sustaining Treatment.

• 한국간호교육학회지
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• 제29권4호
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• pp.440-449
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• 2023

Purpose: This study aimed to identify the reciprocal relationship between parenting attitudes (positive and negative) and adolescent emotional problems as indicated by aggression, social withdrawal, and depression. Methods: This study analyzed longitudinal data from 2,325 parents and their children from the Korea Children and Youth Panel Survey 2018 at three time points over a three-year period (the first to third grade of middle school). Autoregressive cross-lagged modeling was conducted using AMOS 26.0. Results: The results indicated that both parenting attitudes and adolescents' emotional problems were relatively stable over time. In other words, the parenting attitude at a previous point affects the parenting attitude at a later point, and the emotional problem at the previous point continues to affect the emotional problem at the later point. There were no significant cross-lagged effects from both positive and negative parenting attitudes to adolescents' emotional problems. In contrast, adolescents' emotional problems at previous time points positively predicted negative parenting attitudes at later time points. In other words, if there were many emotional problems of aggression, social withdrawal, and depression in adolescents at a previous time, negative parenting attitudes such as rejection, force, and inconsistency at a later time increased. Conclusion: This study can reflect the characteristics of the development of independence in adolescence. Parents should deal with their children's emotional problems based on their understanding of the developmental characteristics of adolescence, and this study provides a strategy for parents to establish appropriate parenting attitudes for adolescents with emotional problems.

• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2002년도 추계정기학술대회
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• pp.445-453
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• 2002

Past and current customer behavior is the best predicator of future customer behavior. This paper introduces a procedure on personalized defection detection and prevention for an online game site. The basic idea for our defection detection and prevention is adopted from the observation that potential defectors have a tendency to take a couple of months or weeks to gradually change their behavior (i.e. trim-out their usage volume) before their eventual withdrawal. For this purpose, we suggest a SOM (Self-Organizing Map) based procedure to determine the possible states of customer behavior from past behavior data. Based on this representation of the state of behavior, potential defectors are detected by comparing their monitored trajectories of behavior states with frequent and confident trajectories of past defectors. The key feature of this study includes a defection prevention procedure which recommends the desirable behavior state for the ext period so as to lower the likelihood of defection. The defection prevention procedure can be used to design a marketing campaign on an individual basis because it provides desirable behavior patterns for the next period. The experiments demonstrate that our approach is effective for defection prevention and efficient for defection detection because it predicts potential defectors without deterioration of prediction accuracy compared to that of the MLP (Multi-Layer Perceptron) neural network.

• 생태와환경
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• 제37권4호통권109호
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• pp.423-430
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• 2004

본 연구는 선택 취수하는 저수지에서 장마 전후에 탁수의 거동을 파악하고자 하였다. 강수량은 11월-5월에 적었고, 6월-10월에 풍부하여 대비가 되었다. 수문에 의한 방류는 선행 강수량과 유입량이 각각 50mm, $80\;m^3^s{-1}$이상일 때 조작되었고, 그 외 기간은 대부분 취수탑을 통해 배출되었다. 하류부를 중심으로 비교할 때, 장마 전후 수중 탁도 차이는 평균값이 29.9NTU로서 장마 후에 크게 증가하였다. 탁수에 포함된 입자 크기의 범위는 0.435-$482.9\;{mu}m$이었고, 전 정점에서 clay성분의 미세립자로 갈수록 크기 분포가 더욱 조밀하였을 뿐만 아니라 상대적으로 차지하는 비율도 높았다. 탁수의 입자 분포에서 clay는 94.4-98.9%, silt는 1.1-5.6% 범위로서 총 입자수의 대부분을 차지하였다. 입자 분포에 의한 탁수의 흐름을 분석한 결과, 저수지의 하류부에서 총입자수는 저층에서 표층으로 갈수록 선형적인 증가가 뚜렷하였다. 이것은 저수지의 수리학적 환경과 밀접한 관련성이 있었고, 선택취수탑과 수문을 통한 방류에 의한 영향이 큰 것으로 추정되었다. 하천으로부터 유입된 탁수는 중류부에서 침강되다가 하류부에서 재부유하는 현상이 발생함으로서 표층-중층을 통한 탁수 이동이 현저하였다. 따라서, 향후 저수지 수질관리 측면에서 이에 대한 육수학적 영향을 규명할 필요성을 제시하고자 한다.

• 한국임상수의학회지
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• 제23권2호
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• pp.164-168
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• 2006

The residue depletion of ampicillin was investigated in the olive flounder (Paralichthys olivaceus), rockfish (Sebastes schlegeli), and red sea bream (Pagrus major) after 5 days treatment with medicated feed at a dose of 100 mg/kg bw/day. Fishes were sampled for muscle on 1st, 2nd, 3rd, and 4th day after treatment. Ampicillin concentrations were determined by high performance liquid chromatography after SPE column extraction. The recovery rates of ampicillin in muscle samples ranged 94-98% and 83-88% for the concentration of 0.05 mg/kg and 0.1 mg/kg, respectively. Ampicillin concentrations detected on 1st day after treatment were 0.143, 0.138, and 0.187 mg/kg in the muscle of olive flounder, rockfish, and red sea bream, respectively. After a withdrawal of 3 days, muscle concentrations were 0.016, 0.012, and 0.021 mg/kg in the olive flounder, rockfish, and red sea bream, respectively. Ampicillin was not detectable in muscle samples on 4 days following withdrawal of the medicated feed. From results of the present study, a withdrawal period of ampicillin is proposed on 5 days after 5 days treatment with medicated feed at a dose of 100 mg/kg bw/day to avoid the presence of excessive residues of the edible muscles of olive flounder, rockfish, and red sea bream.

• Journal of Hospice and Palliative Care
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• 제19권2호
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• pp.136-144
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• 2016

목적: 본 연구는 간호사들을 대상으로 좋은 죽음에 대한 인식, 연명치료 중단과 안락사에 대한 태도수준과 변인 간의 관련성을 확인하여 생명윤리교육의 근거를 마련하는데 실제적인 자료로 활용하고자 이루어졌다. 방법: 연구 대상은 서울, 부산경남, 및 경북지역에 소재한 500병상 이상의 6개 종합병원에서 6개월 이상 근무한 간호사 중 본 연구의 목적을 이해하고 연구 참여를 허락한 자 218명을 대상으로 편의표집 하였다. 연구도구는 좋은 죽음 인식 측정도구(The Concept of Good Death Measure), 연명치료 중단 측정도구와 안락사 측정도구(Attitudes toward Euthanasia)를 사용하였다. 수집된 자료는 SPSS 21 WIN 프로그램을 이용 서술통계, Independent t-test와 one-way ANOVA 및 Pearson's correlation coefficient로 분석하였다. 결과: 간호사의 좋은 죽음에 대한 인식, 연명치료 중단과 안락사에 대한 태도는 보통 수준이었다. 간호사의 일반적 특성에 따른 좋은 죽음에 대한 인식, 연명치료 중단과 안락사에 대한 태도차이는 교육수준, 근무경력 및 신앙의 중요성에서 유의하게 나타났다. 좋은 죽음과 연명치료 중단에 대한 태도는 역 상관관계가 있었고, 연명치료 중단과 안락사에 대한 태도는 순 상관관계가 있었다. 결론: 말기환자를 돌보는 과정에서 발생하는 윤리적 문제를 다루는데 간호사들은 숙련되어야 한다. 좋은 죽음에 대한 간호사의 인식확립과 연명치료 중단과 안락사와 같은 존엄사와 관련된 개념에 대한 이해와 윤리적 갈등 상황에서의 판단과 해결능력에 관한 생명윤리교육의 활성화가 필요하다고 본다.