• Title/Summary/Keyword: 수면시

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Environmental Factors Related to Mass Moralities of Young Red Seabream (Pagrus major) in the Artificial Seed Production (일본산 참돔, Pagrus major 종묘생산과정중 사육수 변화로 인한 대량폐사)

  • 최상덕;정관식;김호진;김성수
    • Journal of Aquaculture
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    • v.11 no.2
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    • pp.203-212
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    • 1998
  • As seed production program is growing prosperously in various fishes in southern Korea, disease problems in larval and juvenile stages have emerged as a new research object. The following results were obtained from investigation about environmental factors related to mass mortalities of young Kinki red seabream, Pagrus major in process of artificial seedling production. Total length of red seabream larvae hatched was 2.93mm, and became 18.83~20.12mm at day 40. The first noticeable mortality of red seabream larvae (7.98~9.37mm) occurred in 25~30 day-old fish with the survival rates of 59.8~60.3%. Thereafter the mortality of larvae decreased, survival rate was 20.5~25.45% in day 40. After 20~30 days, the quality of pond water was bellow II class. During the experimental period COD, $PO_4$-P, $NO_2$-N, $NO_3$-N and $NH_$-N increased up to 3, 7, 34, 6 and 8 times, respectively, compared to initial ones. The number of viable bacteria in pond water and seabream larvae were $6.3{\times}10^6$~$2.3{\times}10^7$ cfu/ml, 4.3~$7.4{\times}10^6$ cfu/g in day 25, respectively. Among the isolated bacteria from the diseased red seabream in day 25, Vibrio spp. was considered to be the causative organism. External symptoms of this disease were floated, spined near the surface and inflated abdomen. When the isolated strain of the Vibrio was bathed to seabream larvae, $LD_50$ of seabream larvae was over $10^6$ cfu/ml of Vibrio spp.

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Relationship between Preschool Child-Mother Interaction, Child's Health Status, Health-Related Quality of Life, and Social Development (학령전기 아동과 어머니의 상호작용, 아동 건강 상태, 건강 관련 삶의 질 및 사회적 발달 간의 관계)

  • Park, Sunghee
    • Child Health Nursing Research
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    • v.20 no.4
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    • pp.255-263
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    • 2014
  • Purpose: The purpose of this study was to examine relationship of preschool child and mother interaction, child's health status, health-related quality of life and social development. Also, it was intended to provide a basis for development of mother-child interaction programs. Methods: The present study was a descriptive research. Participants in this study were a convenience sample of 230 preschool children and their mothers. For the final analysis 209 questionnaires were used after eliminating questionnaires with incomplete responses. Data were analyzed using the SPSS 18.0 program. Results: The mean score for interaction between preschool child and mother was $3.96{\pm}0.55$ out of 5 points, for child health status, $3.75{\pm}0.62$ out of 5 points, for child's health-related quality of life, $83.89{\pm}10.20$ out of 100 points and for child's social development, $19.66{\pm}3.57$ out of 24 points. Positive correlations were found between interaction of preschool child and mother, child's health status, health-related quality of life, and social development. Conclusion: The results demonstrate the importance of the quality of the relationship between mother, the child's primary caregiver, and her child for the healthy growth and development of preschool children. It is suggested that intervention programs for preschool child-mother interaction should be developed using evidence based data.

병원에서의 산업보건관리

  • Jeon, Gyeong-Ja
    • Korean Journal of Occupational Health Nursing
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    • v.2
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    • pp.40-51
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    • 1992
  • 본 연구는 병원에서의 산업보건관리 실태를 파악하기 위하여 전국에 있는 병원을 대상으로 1992년 12월 1일부터 1993년 1월 23일까지 설문조사를 설시하였다. 설문조사에 응당한 병원은 41개병원으로 회수율은 51.9%였다. 조사에 이용된 설문지는 산업안전보건법 내용을 기초로 하여 본 연구자가 작성한 것이며 안전보전에 관한 제반 규정, 안전보건관리체계, 근로자건강관리, 작업환경관리, 보건교육, 보건관련시설, 질병 및 상해에 대한 보상 등에 관한 45개문항으로 구성되어 있다. 분석결과는 다음과 같다. 첫째, 전체 병원 중 68.3%가 안전보건관리 규정이 있다고 답하였으며, 77.5%의 병원이 단체협약 중 근로자의 안전과 보건에 관한 조항을 포함시키고 있는 것으로 나타났다. 단체협약에 포함된 내용 중에는 정기건강진단(23.7%)과 질병 및 상해에 대한 보상(20.9%), 안전보건위원회의 구성(18.1%)등이 많았다. 둘째, 대상 병원중 66.7%가 안전보건관리책임자, 관리감독자, 안전담당자를 두고 있는 것으로 나타났고, 근로자수가 1,000명 이상인 병원은 83.3%가 이들 인력을 선임하고 있다. 그러나, 보건관리자와 안전관리자를 전담으로 두고 있는 경우는 한 곳도 없었으며 50%이내에서 겸직으로 선임하고 있었다. 또한, 안전보건위원회를 운영하고 있거나 노사협의회로 이를 대치하고 있는 병원은 54.2%로 절반 수준에 머물렀고, 그나마 정기적으로 운영을 하고 있다고 답한 병원은 3개 병원 밖에 되지 않았다. 세째, 근로자 건강관리를 위한 건강진단 실시 현황을 보면, 채용시검진 97.6%, 일반건강진단 100.0%, 특수 건강진단 24.4%가 실시하고 있었다. 건강진단에서 주로 실시하고 있는 항목은 흉부 X선검사, 시력, 혈압, 혈청GOT/GPT, 체중, 신장등이었다. 그러나, 병원에서 감염될 수 있는 기회가 높은 간염항원/항체검사의 실시율은 85.7%로 아직도 실시하지 않는 병원이 있음을 알 수 있다. 네째, 작업환경관리를 위하여 정기적으로 환경측정을 실시하는 병원은 21.6%였고 주로 측정하는 항목은 방사선이었다. 특히 소음, 조명, 분진에 대한 측정이 이루어지지 않음은 근로자뿐아니라 환자의 안위에도부정적인 영향을 미칠 수 있다. 다섯째, 안전한 작업과 근로자의 건강을 위하여 정기적인 보건교육을 설시하고 있는 병원은 불과 5.6%였다. 교육내용은 주로 안전에 관한 것이었다. 여섯째, 근로자의 일상적인 건강문제를 해결해주는 의무실을 독립적으로 마련하고 있는 병원은 한 곳도 없었고, 교대근무자나 당직자를 위한 수면시설은 44.7%, 작업 후에 사용할 수 있는 샤워시설은 35.1%의 병원이 마련하고 있었다. 일곱째, 근무중 다치거나 병에 걸렸을 때 치료비에 대한 부담은 대체로 병원이 하고 있으며 치료기간 중 근무는 병가나 휴직으로 처리되고 있다. 이는 병원이 산재보상보험법에 적용을 받지 않은 사업으로 분류되어 있는 현실에 기인된 것으로 보상과 관련된 부담을 병원이나 근로자 모두가 안게 되는 결과를 초래하게 되는 것이다. 이상에서 볼 때 병원근로자를 위한 산업보건관리는 주로 건강진단과 질병 및 상해에 대한 보상제도가 이루어지고 있는 실정이다. 그러므로 질병의 예방이나 악화방지 나아가 건강증진을 도모하기 위한 지속적인 노력을 기울이고 있는 병원은 전무한 상태임을 알 수 있다. 이러한 현실을 병원근로자를 위한 산업보건관리에 대한 인식이 전반적으로 부족함을 드러내는 것으로 이를 개선하기 위한 보다 적극적인 노력이 시급히 요청되고 있다.

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THE DEVELOPMENT OF INDWELLING WIRELESS PH TELEMETRY OF INTRAORAL ACIDITY (구강 내 산도의 생체 내 측정을 위한 wireless pH telemetry의 개발)

  • Kim, Hyung-Jun;Kim, Jae-Moon;Jeong, Tae-Sung;Kim, Shin
    • Journal of the korean academy of Pediatric Dentistry
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    • v.35 no.1
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    • pp.1-10
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    • 2008
  • The purpose of this study was to develop the wireless pH telemetry lasting longer than 24 hours in the mouth to overcome the limits of conventional wire telemetry previously used for salivary and plaque pH measurement, and to assess its effectiveness. We developed a wireless pH telemeter which can measure and store the pH profile data during more than 24 hours. It was composed of intraoral part; pH sensor of antimony electrode, battery and microprocessor for data storage, and extraoral part; control/data receiver and data analyzing software which was newly made for this device. After inspecting wireless electrode for accurate measurement, it was attached to the removable intraoral appliance and delivered to the volunteer who was told to wear except brushing time, retrieved after 24 hours and finally the pH profile data was extracted and analyzed. When compared with conventional wire telemetry, this device showed similar results and induced less discomfort to examinees. The data showed pH changes at same time when examinees ate various scheduled foods and beverages. With this method it became possible to accurately measure pH changes within mouth for long time in accordance with individual's lifestyle, definitely reducing the discomfort inflicted to the examinees' life.

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Factors related to the Health Behavior of Rural Adolescents (일부 농촌지역 청소년들의 건강행태 관련요인 분석)

  • Jo, Heui-Sug;Lee, Sun-Hee
    • Journal of agricultural medicine and community health
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    • v.25 no.2
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    • pp.315-326
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    • 2000
  • Objectives : Health behaviors that contribute to the leading cause of mortality, morbidity, and social problems among youth and adults are mostly established during youth, extend into adulthood, and are interrelated. The purpose of this study is to investigate health behavior, juvenile delinquent behavior, mental status and to understand related factor to health behavior. Methods : The study items of life style were health related habit including smoking, drinking, breakfast, regular diet, regular exercise, sleeping time and weight status. Also, sexual evidence, violence, suicidal perceptions were surveyed. Questionnaire survey was conducted from January to February, 2000 by adolescence living in Kyunggi-Do. Data were collected by self-administered questionares. The collected data were analyzed using PC-SPSS 9.0 version. Results : Most students perceived to be healthy themselves but just two thirds students had concern for health. 64.9% ever drank alcohol, 26.4% ever smoked, and also and 2.9% had attempted suicide during preceding the survey. The rate of sleeping over 8 hours is 31.8%, 65.6% had breakfast. Multiple regression analysis to find related factor with adolescents health behavior were conducted. As a results, concern for health, sex, grade, spending money and attempt to suicide were related to health behavior. Conclusion : These results showed that many efforts to improve the health-concern are necessary and suggest the need for further studies including follow-up study, intervention study on the relationship of life style.

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The Current Status of Life and Happiness of Out of School Youth (학교 밖 청소년의 생활실태와 행복감 관련 변인)

  • Hwang, Yeoun-Kyoung;Hong, Eun-Young
    • Journal of Digital Convergence
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    • v.16 no.2
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    • pp.57-64
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    • 2018
  • The purpose of this study was to analyze the current status of life and psychological characteristics of 250 out of school youth in Cheonan city, and to identify the factors affecting the happiness. For statistical analysis, SPSS 21.0 were used, and reliability, mean comparison, correlation and multiple regression analysis were applied. First, adolescents who stopped studying due to family problems was lower in self-esteem than those who did for other reasons. Males was higher in happiness than females, and those who were less than two years of drop-out duration than those with over two years. Second, out of school youth used a day as 7.9 sleeping hours, 3.91 working hours. For the places for daily activities, they stayed at home for 10.73 hours, at working place for 3.66 hours. The future plan was the most for job plan. Third, there was a positive correlation between self-esteem, hope, and happiness of adolescents out of school. Fourth, the relative impact on the happiness of out of school youth ranked in the order of self-esteem, hope, employment plans, and household income level.

Field Installation Test of the Circular Steel Cofferdam Using Suction Pressure (석션압을 이용한 원형강관 가물막이 현장설치 실험)

  • Kim, Jae-Hyun;Xin, Zhen-Hua;Lee, Ju-Hyung
    • Journal of the Korean Geotechnical Society
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    • v.36 no.10
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    • pp.5-19
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    • 2020
  • With increasing demand for offshore structures, the demand for temporary structures to help the offshore construction work has increased. A cofferdam is a temporary barrier to stop the inflow of water in the construction site and allows working in the dry condition when the construction is done within the water. However, it is a major cause of construction delays and increased costs because additional works are required to block the water inflow. Recently, in order to overcome the limitations of the conventional cofferdam methods and to increase economic efficiency, a large-diameter steel cofferdam method has been proposed which can be installed quickly in the seabed by using the suction pressure. In this circular steel cofferdam method, the top side of the cofferdam including the top-lid is always exposed above the sea level in order to use it as a water barrier, unlike the conventional suction bucket foundation. After installation, the top-lid of the cofferdam is removed and the water filled inside the cofferdam is discharged to make the interior dry condition. In this study, the circular steel cofferdam with a 5 m inner diameter was fabricated and the installation tests were conducted at the Saemaguem test site. During the experiment, variation of suction pressure, leakage between connections, structure deformation, and inclination of the steel cofferdam were measured and post-analyzed. This study verified the new circular steel cofferdam method and confirmed that the suction installation method can be successfully used for various purposes on offshore structures.

TREATMENT OF BRUXISM USING THE OCCLUSAL SPLINT (교합안정장치를 이용한 이갈이의 치료)

  • Baik, Byeoung-Ju;Lee, Sun-Young;Yang, Yeon-Mi;Kim, Jae-Gon;Jeon, Young-Mi
    • Journal of the korean academy of Pediatric Dentistry
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    • v.29 no.4
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    • pp.586-591
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    • 2002
  • Bruxism can be generally regarded as a diurnal clenching or nocturnal teeth grinding or a combination of both. Clenching of the teeth is forceful closure of the opposing dentition in a static relationship of the mandible to the maxilla, whereas grinding of the dentition is forceful closure of the opposing dentition in a dynamic maxillo-mandibular relationship as the mandibular arch moves through various excursive positions. The causes of bruxism are not yet discovered clearly, but most consistently mentioned cause is psychological stress. Bruxism can be also associated with sleep disorders, medication, and disturbances of the central nervous system. There is no permanent treatment method of bruxism, so the objectives for management of bruxism are reduction of psychological stress and treatment of signs and symptoms of bruxism by occlusal adjustment, occlusal splint, systemic medication and physical therapy. These cases report present three cases of children with bruxism. The bruxism was reduced in these patients wearing occlusal splint.

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Radiation Shielding Analysis on The Spent Fuel Storage Facility for the Extended Fuel Cycle (장주기(長週期) 핵연료(核燃料) 저장시설(貯藏施設)에서의 방사선차폐해석(放射線遮蔽解析))

  • Lee, Tae-Young;Ha, Chung-Woo;Yook, Chong-Chul
    • Journal of Radiation Protection and Research
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    • v.9 no.2
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    • pp.90-96
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    • 1984
  • Estimated dose rates in spent fuel pool storage with the extended fuel cycle core management were reviewed and compared with design limit after calculation with the aid of DLC-23/CASK(22 n, 18 g) nuclear data and ANISN code. Radioactivity and gamma spectrum within spent fuel assemblies were calculated with ORIGEN code by extended fuel cycle model. In the calculation of dose rate, the fuel pool geometry was assumed to be infinite slab. Also, composition materials and radiation source within assemblies which are being stored in pool storage were assumed to be uniformly distributed throughout all the assemblies. As a result of culculation of dose rate from stored assemblies and waterborne radionuclides in pool water, the calculated dose rates appear to be lower than design basis limit under normal condition as well as abnormal condition.

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Factors Affecting Coffee Intake in Korean Adults (한국 성인의 커피 섭취량에 영향을 미치는 요인)

  • Kim, Myung-Gwan;Kim, Seung-Dae
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.3
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    • pp.529-536
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    • 2020
  • This study aims to provide the basic data for coffee intake and health promotion by examining the conditions in which Korean adults consume the most coffee. The study used raw data from the second year of the 7th National Health and Nutrition Examination Survey (2017), and 3,325 subjects who were 19 years of age or older and who were not missing the required values. This number used as the average amount of coffee drank per day in the past year is at least one cup. In order to identify factors that affect coffee intake, the model included general characteristics such as gender, age, household income, education level, occupation, health behaviors such as smoking, drinking, high intensity and moderate intensity exercises, walking, physical activity during work and leisure, sleep time, stress and depression. The results showed that coffee intake was lower among women than men, coffee intake was higher for people 40-64 years than people 20-39 years old, physical occupations rather than non-physical occupations, smokers rather than non-smokers, and for high stress rather than low stress in life. Subjects with these factors are considered to be at risk of excessive caffeine intake from coffee. The risk group of this study should be studied for the effect of excessive consumption of coffee on personal health.