• Title/Summary/Keyword: Half Life

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Recent advances of pectin-based biomedical application: potential of marine pectin

  • Kim, Min-Sung;Chandika, Pathum;Jung, Won-Kyo
    • Journal of Marine Bioscience and Biotechnology
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    • v.13 no.1
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    • pp.28-47
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    • 2021
  • Pectin is a natural polysaccharide and biopolymer that serves as a structural component of plant tissues' primary cell walls. Pectin is primarily composed of D-galacturonic acid linked by α-1, 4-glycosidic linkage and is further classified by the ratio of esterified galacturonic acid groups known as degree of esterification (DE). Pectin that contains more than half of its carboxylate units as methyl esters is known as a high methyl (HM) ester. Conversely, pectin that has less than half of its carboxylate units as methyl esters is known as a low methyl (LM) ester. Pectin has various bioactive properties, including anticancer, anti-inflammatory, antioxidant, antidiabetic, anticholesterol, antitumoral, and chemopreventive properties. Moreover, pectin is a useful biopolymer in biomedical applications. Biomedical engineering, which is founded on research aimed to improve the quality of life using new materials and technologies, is typically classified according to the use of hydrogels, nanofiber mats, and nanoparticles. This paper reviews the progress of recent research into pectin-based biomedical applications and the potential future biomedical applications of marine-derived pectin.

Experience and Vision of Nutrition Education by Nutrition Teacher Candidate in School (예비영양교사의 학교에서의 영양교육 경험 및 방향 설정에 대한 인식 조사)

  • Lee, Eun-Ju;Lee, Hae-Young
    • Journal of the Korean Society of Food Culture
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    • v.24 no.4
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    • pp.440-450
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    • 2009
  • The purposes of study were to survey the status of nutrition education in school and investigate the perception of nutrition teacher candidates concerning the direction and ideal method for nutrition education. A questionnaire was distributed to 554 nutrition teacher candidates from August to October, 2006. A total of 468 usable data were collected (84.5% response rate). The statistical data analysis was completed by using SPSS for Windows (ver. 10.0) for descriptive analysis, ANOVA and $X^2$-test. About 52% of respondents had nutrition education teaching experience. Half of the respondents indicated that the necessity for nutrition education stemmed from their own need for such education. The main problem in students' dietary life was 'the increasing intake of processed foods, instant foods and fast foods (4.23 out of Likert 5 point scale)' and the major nutritional problem was 'high calorie intake with low essential nutrients (3.96 out of Likert 5 point scale)'. Over half the respondents (53.4%) recommended that nutrition education be oriented towards behavioral change rather than knowledge delivery. Social learning theory was preferred mostly as an theory apt to nutrition education (60.3%) and the most effective means of education was referred to organizing the regular class for nutrition education (50.5%). The 'playing such as songs or game' was reported as both effective and realizable method in nutrition education.

Use of the Complementary and Alternative Therapies, Pain and Quality of Life in Patients with Chronic Back Pain (만성 요통환자가 이용하는 대체요법과 통증, 삶의 질에 대한 연구)

  • Ha, Sung-Wha;Suh, Yeon-Ok
    • The Korean Journal of Rehabilitation Nursing
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    • v.11 no.1
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    • pp.5-12
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    • 2008
  • Purpose: The purpose of this study was to identify the uses of complementary and alternative therapies(CAT), pain, and quality of life(QOL) in patients with chronic back pain. Method: A descriptive survey was conducted using convenient sample. One hundred sixty two patients with chronic back pain participated in this study. Types and satisfaction of CAT, pattern of back pain, and QOL were investigated. Result: 83.3% of all participants reported in the use of CAT. The most common types of CAT used were acupuncture and half-bath. Yoga were the most high satisfaction among the types. The mean score of back pain was 4.12, QOL was 3.10, that was mostly low score. There was no significant difference back pain and QOL between CAT user and nonuser. Correlation with satisfaction of CAT according the most using types were a negative correlation with back pain and a positive correlation with QOL. Conclusion: These result indicate that the mostly patients with back pain feels the satisfaction of CAT use. It is important that provide the obvious information about CAT which can be helpful to patient.

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The Study on Aging (노화(老化)에 대한 연구(硏究) (황제내경(黃帝內經)을 중심으로))

  • Baek, Sang-Ryong
    • Journal of Korean Medical classics
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    • v.12 no.2
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    • pp.176-183
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    • 1999
  • Each life has its own properties that distinguish one another. With this property, Oriental medicine suggests original diagnosis and treament. Our process of aging shows typical outline of cycle, i. e. from one's birth to death. Understanding the life cycle of men gives us very good hint to predict one's state of health, possible diseases, characteristics of disease in each term of his/her life cycle. It's because body and mode of diseases change according to age. Aging starts when $\breve{U}$m Essence(陰精)-the essence one receive from parents-dries up or when Deficient Fire(虛火) soars. Parts that compose our body-bones, muscles, flesh, etc.-gradually weaken and worn out as they no longer get support from Yang-Ki(陽氣), In "Yellow Emperor's Classic", aging starts around one's forties when $\breve{U}$m Essence(陰精) is reduced to less than half. However, what is usually accepted is that women start aging from 49 and men 64, regarding significant geriatric disease. As it is mentioned, aging starts with exhaustion of $\breve{U}$m Essence(陰精) which results in soaring Deficient Fire. Main symptoms are weak mental state due to Sin(神) disorder, and weak physical state due to Spleen and Stomacn(脾胃) disorder. Main principle in treating and preventing diseases related to aging is preserving $\breve{U}$m Essence(陰精), as well as fortifying Ki and Blood(氣血). To do this, Lung(肺)-which collects $\breve{U}$m Essence(陰精), and Kidney(腎) stores-which stores $\breve{U}$m Essence(陰精).

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First Report of Clavinema mariae (Nematoda: Philometridae) in Cultured Rockfish, Sebastes schlegeli, in Cheonsuman (Bay), the Republic of Korea

  • Han, Hyun-Ja;Seo, Jung Soo;Park, Jeong Su;Lee, Haeng Lim;Seo, Han Gill;Jung, Sung Hee;Kwon, Se Ryun
    • Parasites, Hosts and Diseases
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    • v.55 no.2
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    • pp.219-224
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    • 2017
  • In July 2012, philometrid nematodes were discovered in cultured rockfish (Sebastes schlegeli) in Cheonsuman (Bay), the Republic of Korea. The nematodes were detected in the epithelial tissues of the rockfish and were identified as Clavinema mariae based on morphological studies using light and scanning electron microscopy. They revealed the characteristics same as previously identified C. mariae, notably having a long body with narrow posterior half, no caudal projection, a cylindrical-shaped esophagus, a well-developed anterior bulbous part of the esophagus, cephalic papillae, and a dorsal esophageal gland. This is the first confirmation of C. mariae infection in rockfish in Korea.

Study on Bladder Dysfunction in Elderly Women by the BFLUT Questionnaire and Bladder Scanner: Frequency and Residual Urine (질문지법과 초음파 방광용적진단기를 이용한 여성노인의 배뇨장애연구 -빈뇨, 잔뇨를 중심으로)

  • Kim, Jeung-Im
    • Women's Health Nursing
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    • v.17 no.3
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    • pp.294-303
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    • 2011
  • Purpose: This study aimed to describe bladder dysfunction in elderly women such as frequency, nocturia, and residual urine. Methods: One hundred elderly women aged 60 and over. The Bristol Female Lower Urinary Symptoms (BFLUT) was used to evaluate the bladder function and to measure the residual urine amount by using a bladder scanner. Data was analyzed with the differences between voiding dysfunction by age group and life habits by t-test, ANOVA and correlation by Pearson correlation coefficient. Results: the mean daytime frequency was 6.8 times and night-time frequency 2.7 times. Sixty three percent of subjects had urgency and 41% had urgent incontinence. Over half of subjects had problem in voiding function. There were significant differences in frequency by age groups and constipation, but not in daytime frequency and residual urine. Lastly, there were significant positive relations between daytime frequency and night-time frequency. Also results indicate that more frequency in daytime equaled to a less residual urine amount. Conclusion: We know many elderly women have lower urinary tract symptoms. Specially women over 75 years have more daytime frequency and night-time frequency. This suggests further research needed in order to understand the relation of voiding patterns and life habits and its influence on quality of life.

The Leisure of Multi-Cultural Family in Marriage Migrant Women's View (결혼이주여성 관점에서의 다문화가정 여가생활)

  • Cha, Sung-Lan
    • Journal of Family Resource Management and Policy Review
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    • v.15 no.1
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    • pp.51-70
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    • 2011
  • This study is to explore the effects of leisure life on multi-cultural family from a view of marriage migrants women. For this purpose, data were collected by in-depth interviews of 24 marriage migrants women who came from 7 countries such as Vietnam, China, Japan etc. They are living in Daejeon city, Okcheon gun(Chungbuk), Gumi city(Gyungbuk) and the length of residence is ranging from 4 and half month to 13 years and 6 months. Data were analyzed by qualitative method. Major findings are as follows: First, individual and family leisure of marriage migrant women had positive effects on adaptation of her family life. Especially, in the early marriage stage, family leisure contributed women's emotional stability. Second, time was the most limiting constraints in family leisure of multi-cultural family. Third, early in the marriage, marriage migrant women who is not fluent in Korean language, customs, and courtesy hinders them from joining their family leisure. Fourth, leisure may seem to contribute to family life satisfaction, but marital relationships and household economy has to be settled beforehand.

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Awareness of good Samaritan law and attitude toward basic life support in university students (대학생의 선의의 응급의료면책에 대한 인식과 기본심폐소생술에 대한 태도)

  • Choi, Eun-Sook;Lee, Kyoung-Youl
    • The Korean Journal of Emergency Medical Services
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    • v.23 no.3
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    • pp.53-65
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    • 2019
  • Purpose: This study aimed to assess the awareness of good Samaritan law and attitude toward basic life support (BLS) of university students. Methods: A 29-item questionnaire survey was conducted among 147 students in A university. The participants were freshmen and sophomores who had received cardiopulmonary resuscitation (CPR) training in middle or high school. Statistical analysis was carried out using SPSS 21.0. Results: The majority (85%) of the participants knew about the good Samaritan clause in the Emergency Medical Service Act, but only about half (58.5%) knew about the Non-rescuer Act. Almost all of the patients said they would administer CPR to patients and showed a positive attitude toward BLS (3.74±0.40). Conclusion: Greater help attitude was exhibited by those who knew the good Samaritan law. These findings suggested that such education may increase their likelihood or helping in emergencies.

Life Transition Process Effects on Depressive Symptoms in Parents of Children with Autism Spectrum Disorder

  • Hong, Sun Woo;Kim, JinShil;Lee, Ae Ran;Choi, Jeong Sil
    • Child Health Nursing Research
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    • v.24 no.3
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    • pp.337-344
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    • 2018
  • Purpose: The purpose of this study is to examine the association between each phase of the Life Transition Process (LTP) and depressive symptoms among parents of children with Autism Spectrum Disorder (ASD). Methods: Using a cross-sectional study design, data pertaining to LTP and depressive symptoms were collected from 285 parents of children with ASD (101 fathers and 184 mothers). Participants were recruited through the Autism Society of Korea and a counseling center for families of children with ASD. Results: Using a cut-off point of 5 or higher on the Beck Depression Inventory-Short Form, more than half of the parents (53.4%) were deemed depressed; these parents experienced moderate (27.4%) to severe (11.6%) levels of depressive symptoms. A hierarchical multiple regression using the socio-demographic characteristics of children and parents and each phase of the LTP as predictors, found that lower income (${\beta}=-.14$, p=.007) and greater scores for the wandering phase (${\beta}=.59$, p<.001) were significant predictors of greater levels of depressive symptoms. Conclusion: These findings confirm the association between LTP and depressive symptoms for parents of children with ASD, who were found to have a greater risk of depressive symptoms during wandering phase.

Housing Aspirations of College Students from Post Graduation to Pre Marriage (울산, 대구 지역 대학생의 결혼 전 독립생활을 위한 주거계획)

  • Yang, Sehwa;Kim, Myo-Jung
    • Journal of Families and Better Life
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    • v.32 no.2
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    • pp.1-11
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    • 2014
  • This study investigated the characteristics of housing considerations of college students from post graduation to pre marriage. The data came from the survey with 267 college students in Ulsan and Daegu from November 26 through December 14, 2012 and were analyzed with descriptive statistics, cross-tabulation analysis with chi-squared test, and logistic regression analysis. Over half of the respondents desired to separate from parents for the adulthood and about forty-three percent of them wanted to live alone. Among the housing characteristics, location, utilities, housing type and facility features were important for the respondents desiring to live the single life, and specifically, apartment and efficiency with $33-66m^2$, low monthly rents, floor plan with bedroom, kitchen and bathroom, and good public transportations were the most and primarily preferred features of housing for their future housing consideration. The variables influencing future housing preferences for the respondents were the number of roommate and preferred housing type.