• 한국식품위생안전성학회지
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• 제3권2호
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• pp.53-58
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• 1988

현행 보건 사회부 고시 제 86-5호 식품 등의 규격 및 기준에 근거한 아질산근의 정량법에 대하여 검토한 결과는 다음과 같다. 1. 온침 및 냉침에 의한 침출법에서 아질산근의 회수율은 종래의 온침법에 비하여 냉침법이 높았다. 2. 냉침한 경우 검체를 세절한 것이 균질화한 것보다 회수율이 좋았으며 지질함량이 높은 알젓류를 제외하고는 제단백제를 처리하지 않아도 거의 동일한 회수율을 나타내었다. 3. 침출시간은 30분 및 2시간에서 가장 높은 회수율을 나타내었으며 HgCl2를 첨가하지 않은 시험 용액은 침출시간 30분에서 최대 회수율을 나타내었다. 4. 침출용매로서는 냉침의 경우 물이 중성 완충액보다 좋았으며 완충용액에서는 혼탁현상이 나타났다. 5.시험용액이 착색 또는 혼탁되었을 때 증류조작을 하면 아질산근이 소실되어 회수율이 크게 저하하므로 시험용액으로 보정 할 필요가 없다. 6. Diazo화 반응에서 산성화제는 검토된 것 중에서 현행의 1N-HCl 이 가장 좋은 결과를 나타내었다. 7. Diazo화 및 Couopling제는 각각30% 초산용액으로 만든 sulfanilamide와 N-1-naphthylenediamine이 검토된 것 중에서 가장 양호하였다. 8. Coupling 시간은 종래의 20분에서 10분으로 단축시킬수 있었다.

• 환경영향평가
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• 제14권2호
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• pp.83-96
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• 2005

Brominated flame retardants have the market share of 40%, comparing others because of their low cost and highly effective retardation against the flame. However, their toxic effects in human and properties of the accumulation in the environments have been issued among the international organization such as EU, OECD and etc. It, therefore, was surveyed the classification, toxic effects, and the usage of Brominated flame retardants, the trends for their managements in the world and Korea, and their contaminated levels in Korean Peninsula. In addition, the management directions for them were proposed. Penta, octa, and deca-BDE among brominated retardants will seem to be prohibited by the regulation as a flame retardants for plastics in Europe because of their toxic effects. Although Penta and Octa BDEs was used marginally in Korea, deca-BDE was 27% of brominated flame retardants (49,050 ton) which had been used in 2002. However, risk assessment for brominated retardants might not launched in Korea, yet. These reports demonstrate that toxic brominated retardants such as PBDEs will be assessed for their usage and the level of contamination in the environment in the area of the point sources like the industrial areas, incinerators and etc. However, the law to regulate the hazardous chemicals seems not to be dictated the monitoring of their contamination in the environment. We, therefore, suggest how to evaluate and to monitor the toxic contaminants with EIA (Environmental Impact Assessment) and LCA (Life Cycle Assessment) system. Further, to establish the management system of BFRs (such as the monitering of contamination levels in environments, life cycle assessment, and risk assessment for the toxic chemicals), It can be recommended the law to deal with the method analyzing chemicals will be established, which contains QA/QC (Quality Assurance and Quality Control) to evaluate the analytic capability of the companies to prepare EIS (Environment Impact Statement) or other institutes for analyzing chemicals.

• 한국컴퓨터정보학회논문지
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• 제20권6호
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• pp.127-140
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• 2015

본 연구는 알츠하이머에 대한 의료 웹포럼 컨텐츠의 감성 분석과 사회연결망 분석을 연계하여 감성을 표현하는 정도와 사회연결망상의 영향력 사이의 관계를 살펴보았다. 최근 사회가 고령화가 됨에 따라 치매환자는 증가하고 있는데 이에 환자뿐만 아니라 환자 보호자들은 질병에 관한 정보뿐만 아니라 위로를 얻기 위하여 의료 웹포럼을 이용하고 있다. 웹포럼상에서의 정보적/감성적 지지의 형태로 나타나는 사회연결망을 분석한 결과, 네트워크 중앙에 위치한 사용자의 감성표출이 다른 사용자의 감성 표출보다 높게 나타나는 것을 관찰하였다. 또한 긍정적 단어를 많이 사용하는 그룹이 부정적 단어를 많이 사용하는 그룹에 비해 연결중심성 및 보나시치중심성 값이 높게 나타난 것을 확인할 수 있었다. 본 연구는 웹포럼 상의 감성전달에 있어서 일반 사용자에게 큰 영향력을 줄 수 있는 오피니언 리더를 도출하고, 알츠하이머 환자의 우울증을 완화할 수 있는 정책의 일환으로 활용할 수 있을 것이다.

• 한국동물위생학회지
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• 제34권2호
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• pp.133-138
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• 2011

The prevention of porcine respiratory disease complex (PRDC) is very important because of its high infection-rates in the swine farms and the economic impact in swne industry in Korea. To control the prevalence of PRDC, it is important to know about infection patterns of it. Therefore, this study aimed to investigate the infection patterns of PRDC in the northern area of Gyeongsangnam-do. To this end, the infection of porcine reproductive and respiratory syndrome virus (PRRSV), porcine circovirus type 2 (PCV2), Actinobacillus pleuropneumoniae (APP), Mycoplasma hyopneumoniae (MH), and Swine influenza virus (SIV) were examined using 120 pig lung tissues by PCR analysis. As a result, single pathogen positive specimens were 25.0% and the others (75.0%) were turned out to be PRDC with at least two pathogens. Among PRDCs, 50 specimens (41.7%) was infected with PRRSV, PCV2, MH and SIV. Ten specimens (8.3%) showed triple infections of PRRSV, PCV2 and MH. Double infected specimens for PRRSV and PCV2 were 10 (8.3%), and for PCV2 and APP were 20 (16.7%).

• 한국물환경학회지
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• 제24권5호
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• pp.537-542
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• 2008

Textile industry has been recognized as an important pollution source due to its consumption of large volumes of water and chemicals. Textile wastewater contains very diverse chemicals in types and composition, among them the presence of dyes is highly visible and undesirable. In spite of these problems, there has not been a proper control for the wastewater because many dyes are difficult to be degraded or decolorized due to their complex structure and synthetic characteristics. This study has been progressed to evaluate more easily the potential decolorization of advanced treatment processes. It has been surveyed with the Y textile complex wastewater treatment plant, the raw wastewater has appeared very difficult biodegradability by 4.7 of $CODcr/BOD_5$ and 1,158.9 degree of color. In view of CODcr fractions, biodegradable COD portion was 46.4%, colloidal COD and real soluble COD was 45.3% and 31.5% each others. From research on unit processes, the degradable coefficient (k) became from 0.065 to $0.125d^{-1}$ by the processes, the decolorization appeared best efficiency by 30.1% (458.4 degree) in pre-ozone process. On the effluent from the biological process, the filterable CODcr became 129.3 mg/L, the biodegradable portion appeared 64.7% (83.6 mg/L), and the fixed dissolved solid (FDS), non-reactivity (NR), appeared very heavy portion by 80.5% (1,659.0 mg/L).

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제15권4호
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• pp.3-11
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• 2009

As de-schooling students (students who leave schools) have been produced and increased in middle and high schools every year since 1990s, urban alternative schools have founded with Seoul as the center. The objects of such urban alternative schools are de-schooling teenagers, and their educational goal is to make the students to discover their own values and grow as members of the community by accomplishing their healing and growth. Most of students in alternative schools have excessive self-centered feeling than ordinary people, and since they don't have exchanges with others, they have to receive holistic healing along with education. Here, 'healing' is a method of approaching to health through environmental, psychological, social and cultural supports unlike 'treatment' used for medical means. Therefore, holistic healing for alternative schools' students has to accomplish self-knowledge, self-control, and self-healing without repulsion through spaces of healing environments instead of heavy-handed exchanges. This study has integrated a theory of Max $L{\ddot{u}}scher$ who suggested a psychological healing theory in terms of internal character and a theory of Rudolf Steiner who suggested it in terms of practical and holistic sense and analyzed Sungmisan School, one of urban alternative schools in Seoul through the integrated theory. The analysis of the integrated theory are intended to emphasize the importance of healing environments and suggest methods in creating healing environments for urban alternative schools in the future.

• 전자통신동향분석
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• 제34권5호
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• pp.14-25
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• 2019

As the Internet of Things, artificial intelligence and big data have received a lot of attention as key growth engines in the era of the fourth industrial revolution, data acquisition and utilization in mobile, automotive, robotics, manufacturing, agriculture, health care and national defense are becoming more important. Due to numerous data-based industrial changes, demand for sensor technologies is exploding, especially for intelligent sensor technologies that combine control, judgement, storage and communication functions with the sensors's own functions. Intelligent sensor technology can be defined as a convergence component technology that combines intelligent sensor units, intelligent algorithms, modules with signal processing circuits, and integrated plaform technologies. Intelligent sensor technology, which can be applied to variety of smart IT convergence services such as smart devices, smart homes, smart cars, smart factory, smart cities, and others, is evolving towards intelligent and convergence technologies that produce new high-value information through recognition, reasoning, and judgement based on artificial intelligence. As a result, development of intelligent sensor units is accelerating with strategies for miniaturization, low-power consumption and convergence, new form factor such as flexible and stretchable form, and integration of high-resolution sensor arrays. In the future, these intelligent sensor technologies will lead explosive sensor industries in the era of data-based artificial intelligence and will greatly contribute to enhancing nation's competitiveness in the global sensor market. In this report, we analyze and summarize the recent trends in intelligent sensor technologies, especially those for four core technologies.

• Journal of Korean Biological Nursing Science
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• 제24권4호
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• pp.262-271
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• 2022

Purpose: The purpose of this study was to identify the factors affecting readmission in stroke patients. Methods: A retrospective study design was used. Participants were 3,675 adult cerebral stroke patients in the inpatient wards of the Department of Neurology and Neurosurgery of G University Hospital located in C city. Data were collected from January 1, 2016 to December 31, 2021 and data were analyzed using χ² test, independent t-test, and multivariate logistic regression with SPSS/WIN 24.0. Results: After discharge for stroke, the readmission rate was 23.7%, and the mortality rate was 0.3%. The variables with significant differences between the readmission group and non-readmission group were age, type of stroke, surgery, ICU treatment, mRS score, blood pressure, diabetes, and heart disease. Factors influencing an readmission in stroke patients were Age 65-74 (OR 1.30, 95% CI=1.03-1.64), ≥ 75 (OR 1.28, 95% CI=1.02-1.62), mRS score 2points (OR 2.50, 95% CI=1.99-3.13), HTN status (OR 1.26, 95% CI=1.07-1.50), CVD status (OR 1.38, 95% CI=1.01-1.90), TC (OR 1.60, 95% CI=1.05-2.44). Conclusion: To lower the readmission rate of stroke patients, it is essential to control lifestyle, including whether or not to take treatment drugs, after diagnosing risk factors such as high blood pressure, diabetes, and heart disease, hyperlipidemia. Nursing interventions that can provide information on risk factor management and coping strategies are urgently needed as symptoms change. In addition, research is needed to develop and implement an intervention strategy that can improve the function of stroke patients as much as possible at home or in society so that they can lead an independent life without the help of others, and verify their effectiveness.

• Journal of Nutrition and Health
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• 제6권3호
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• pp.1-8
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• 1973

Metabolic responses to the protein-free, high-carbohydrate diet and subsequent food restriction on the same diet at the level of 50% and 75% has been studied on the adult albino rats. The energy source was either corn starch or sugar. In experiment I, adult male rats weighing $509{\pm}8g$ were divided into two groups 10 rats each. Rats fed on the stock diet served as a control. Rats of restriction group received a protein free diet until they reduced their weight down to 400g and continue on a protein-calorie restriction diet until they reduced their weight down to 300g. In experiment II, 28 adult male rats and the same numbers of female rats weighing $329{\pm}5g$ and $223{\pm}4g$ respectively were divided into four groups, 7 males and females in each. Rats fed on a stock diet were sacrificed at the point when others started a protein free diet. These were served as the control. The protein free group received a protein free diet ad libitum for 4 weeks. The 50% restriction group and 75% restriction group were fed on a protein free diet coupled with food restriction at levels of 50% and 75% respectively for 3 weeks. In the result of this study: 1. The rate of body weight changes was similar between the males and the females. Feeding protein free diet ad lib. initiated a rapid weight lost of approximately 25% and protein free diet coupled with food restriction showed 37-43% reduction of their initial weight. 2. There was no significant differences in the value of the N concentration in liver, spleen, brain and muscle between controls and experimental groups. 3. Rats fed on protein free diet showed 1/10 value of the control in the nitrogen excretion in urine. However female showed less N excretion than male. 4. Observing blood picture, the effects of protein depletion and calorie restriction were not appeared any remarkable changes. 5. There was no sign of fatty liver which might result from protein depletion and calorie restriction. 6. Following semi-starvation, FAO and HMP-DH total enzyme activity was reduced, but activity per unit weight was relatively stable.

• 디지털콘텐츠학회 논문지
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• 제13권4호
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• pp.501-516
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• 2012

본 연구의 목적은 대학생의 스마트폰 중독의 문제를 예방하고, 또 이를 개입하기 위한 기초자료를 제공하고자, 현상학적 연구 방법을 사용하여, 대학생들이 스마트폰을 사용하면서 겪은 다양한 경험의 "의미"와 "본질"을 파악하고자 하였다. 본 연구의 참여자들은 C시에 있는 대학에 재학 중인 총 9명의 대학생들이며, 심층 인터뷰 기간은 2012년 6월 초부터 2012년 7월말이었으며, 자료는 Colaizzi의 현상학적 연구방법에 따라 분석되었다. 자료분석 결과, 40개의 주제, 5개의 주제군이 도출되었으며, 1. 관계와 소통을 위한 몸부림(무방비 상태로 인터넷에 자기 개방하기, 인터넷상에서 위로받고 싶음, 마음의 상처와 불신), 2. 과다사용 및 통제력 상실(컴퓨터보다 스마트폰을 주로 사용, 과몰입 과다사용 습관화, 통제력 저하), 3. 심리적 부적응(과도한 애착과 의존, 분리불안, 집착, 인내력 저하), 4. 일상생활 위협(우선순위 변동, 독립적 일상생활기능 퇴행, 불규칙적 생활 및 건강문제 발생, 무료 메신저 피해, 학업에 지장 초래), 5. 회복의 가능성 엿보기(갈등과 회의, 사람간 소통의 중요성, 절제 의지, 회복의 여지) 등이다. 이상의 결과를 바탕으로, 대학생의 스마트폰 중독을 예방하기 위한 제언을 하였다.