• 한국환경농학회지
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• 제17권4호
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• pp.335-340
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• 1998

This study was conducted to determine the morphological responses of barley seedlings to NaCl stress and to investigate histological changes of cells with transmission electron microscope(TEM) after NaCl stress. Plant height and root length of 10-day old barley seedlings with NaCl stress were reduced and inhibition level was found to be more severe in the plant height than in the root length. The leaf length, leaf width and leaf area were shorter as well with NaCl stress than without NaCl stress. However, there was no difference in the number of roots between NaCl treatments. The weight of dry matter decreased at higher NaCl concentrations, especially at 100mM NaCl. The water content of shoots tend to decrease at higher NaCl concentrations, but there was no difference in the water content of roots, The reduced sugar content was greatly increase than starch. Cellulose content was higher in NaCl stressed-plant than control, and tended to decreased at higher NaCl concentrations. Lignin content also decreased NaCl stressed-plant but there was no tendency at NaCl stress concentrations. Electric conductivity of cell sap with seedlings was high with NaCl stressed-plant. Amount of cell sap gradually increased with time in the roots than in the shoots, The grana of chloroplasts was changed by 150mM NaCl concentration. The christe of mitochondria in root meristematic sells ruined in structure and cell wall of leaf and root was also ruined by NaCl stress.

• 보건의료산업학회지
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• 제6권3호
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• pp.183-195
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• 2012

The purpose of this study was to examine the level of stress, somatization, anger, adjustment to school according to the types of housing. This study employed a descriptive design. Data was collected from 552 students in a girls high school in gongju using structured instruments. Not to be influenced by the tension of new school year or the stress by taking tests, the researcher did the survey after students finishing midterm test of the first semester for two days from July 14 to 15. The results are as follows. There was no difference in the level of stress, anger, adjustment to school between the students living in a dormitory and the students not living in a dormitory. However there was remarkable difference in somatization. There was positive correlation between somatization and stress(r=.194, p=.011), between anger and stress(r=.463, p<.001), in contrast there was a negative correlation between adjustment to school and stress(r=-.174, p<.001) of students living in a dormitory. On the other hand, there was negative correlation stress(r=-.187, p<.001), somatization(r=-.252, p<.001), anger(r=-.230, p<.001) with adjustment to school of students not living in a dormitory. In the sub-factors of somatization, students who live in a dormitory have many kinds of somatizations of digestive or respiratory organs. A Health promotion program should be designed for girls high school students living in a dormitory, based on the level of somatization of digestive or respiratory organs.

• 성인간호학회지
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• 제19권1호
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• pp.89-97
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• 2007

Purpose: This study was to examine the differences in the degree of premenstrual syndrome, dysmenorrhea, and stress according to the gender role identity of female university students. Methods: Data were collected by self-reported questionnaires from 308 female university students. Data analysis was done with SPSS 10.1 for descriptive statistics, ANOVA, and Duncan's multiple-range test. Results: The most prevalent type of premenstrual syndrome was androgenic(33.8%), followed by undifferentiated(25.0%). There was a significant difference in dysmenorrhea according to residence. In addition, there were significant differences in premenstrual syndrome according to age, and in stress according to age and economic status. Also, there was no significant difference according to dysmenorrhea and there were significant differences in premenstrual syndrome and dysmenorrhea according to gender role identity. Premenstrual syndrome and stress were the most prevalence in female type, but the lowest severe in masculine type. Conclusion: The study variables can be influencing factors in the gender role identity of female university students. Also, the findings can provide the basis for the development of nursing interventions to establish the gender role identity of female university students.

• 한국간호교육학회지
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• 제21권1호
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• pp.28-35
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• 2015

Purpose: The purpose of this study was to examine the effects of prior information about ICU environment on the anxiety and environmental stress of cardiac surgery ICU patients. Methods: A non-equivalent control group non-synchronized quasi-experimental research design was used. Participants were 60 (control 30, experimental 30) patients who had been admitted to ICU. Prior information about the ICU environment was provided to the experimental group. The anxiety level of subjects was measured by State-Trait Anxiety Inventory (STAI) and the stress level of subjects was measured by the Intensive Care Unit Environmental Stressor Scale (ICUESS). Data were analyzed using a Chi-square test or a Fisher's exact test, independent samples t-test, and paired samples t-test. Results: There was no difference in Anxiety (t=-0.58, p=.563), but there was a significant difference in environmental stress (t=10.46, p<.001). Conclusion: Providing prior information would be an effective nursing intervention to reduce environmental stress.

• 드라이브 ㆍ 컨트롤
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• 제20권4호
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• pp.9-16
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• 2023

This paper analyzed a drainage tower used to drain water in flooded areas. Multi-body dynamics simulation was used to analyze the dynamic behavior of the drainage tower. Structural analysis, flexible-body dynamic analysis, and rigid body dynamic analysis were done to study the maximum Von-Mises stress of the drainage tower. The results showed that the maximum Von-Mises stress occurs at the turn table, and it decreases when the angle of the boom is increased. Also, the rate of the change of angle affects the maximum stress so that the maximum stress changes more when the angular velocity of the boom increases. Based on the rigid body dynamic analysis and the theoretical analysis results, the centrifugal force from the angular velocity makes the difference in the maximum stress at the turn table because of the difference in their direction. Consequently, it was concluded that the centrifugal force should be considered when designing construction machinerythat can rotate.

• Physical Therapy Rehabilitation Science
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• 제13권1호
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• pp.134-142
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• 2024

Objective: This study aimed to compare the subjective health status, physical activity index, and perceived stress rate of obese children with those of healthy children through propensity matching analysis and to use the results to help manage obese children. Design: Descriptive correlation study. Methods: This study conducted a secondary analysis using raw data from the National Health and Nutrition Examination Survey. Propensity matching (1:2) was conducted between obese and healthy adolescents. Results: The number of days of physical activity was 1.22 days for the obese adolescent group and 1.01 days for the non-obese adolescent group, which was higher in the obese group (p=0.003). The subjective health status was 3.43 and 3.81 in the obese and non-obese adolescent groups, respectively, showing a higher difference in the normal group (p<0.001). No statistical difference was observed in the perceived stress rate (p=0.871) or strength exercises (p=0.190) between the two groups. Conclusion: This study suggests the need for development measures to effectively improve youth physical activity, muscle-strengthening programs, stress management, and subjective health status in obese and normal groups.

• 대한간호학회지
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• 제36권1호
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• pp.179-188
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• 2006

Purpose: This study was aimed to identify the effects of a self-foot reflexology massage on depression, stress responses and functions of the immune system of middle-aged women, Method: This study was a one group pretest-postlest experimental design and the data was collected from August $1^{st}$ 2004 to May $31^{st}$ 2005. The subjects consisted of 46 middle-aged women (40 - 64 years) who were recruited from the Community Health Center in Busan city. Subjects were not treated for 4 weeks, subsequently they were trained in self foot reflexology massage for 2 weeks, and then they did their own daily for 6weeks (2 days at the research center, 5 days at home).The outcome variables were measured 4 times, at baseline, pre training, after training, and after the intervention. The collected data was analyzed using repeated measure ANOVA by the SPSS/WIN program. Result: There was a statistically significant difference in depression, perceived stress, systolic blood pressure, natural-killer cells and Ig G. However, there was not a statistically significant difference in dyastolic blood pressure, pulse or serum cortisol. Conclusion: These results suggest that a self-foot reflexology massage could be utilized as an effective nursing intervention to reduce depression and stress responses, and to strengthen immune systems in middle-aged women.

• 동의신경정신과학회지
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• 제3권2호
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• pp.49-63
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• 1992

In order to study the anti-stress effect of Bunsimgieum, the changes of plasma catecholamine, aldosterone and cortisol levels were measured. In this study author gave immobilization stress to rats, and got the following results: 1. The contents of NE and EPI control group were $2.67{\pm}0.53$, $1.90{\pm}0.22\;ng/ml$, but in sample group the contents were $1.93{\pm}0.67$, $1.15{\pm}0.28\;ng/ml$. The real significance lies in thet only NE show the difference. 2. The contents of aldosterone in control group were $440.69{\pm}37.82\;Pg/ml$, but in sample group $174.64{\pm}42.41Pg/ml$ of aldosterone was measured. The difference was obvious. 3. The cortisol contents in control group were $0.17{\pm}0.03\;ug/dl$, but in sample group $0.28{\pm}0.03 \;ug/dl$ of cortisol was measured. Base on the results above, it may be concluded that Bunsimgieum is effective to prevent to prevent the changes by stress.

• 대한예방한의학회지
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• 제8권1호
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• pp.135-145
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• 2004

This study tried to analyze influencing factors on self-perceived health status(SPHS) of labors in workplace. and suggested the preventive oriental medicine approaches in occupational health care. 914 data for research were collected through the process of oriental health examination with questionnaire in workplace and collected data were analyzed with frequency, homogeneity and correlation statistically. The results were as follows : 1) The distributions of SPHS was 58.4% of healthy group. 41.6% of unhealthy group. 2) For the difference of SPHS by stress, the high level stress group was more included in healthy group(p<0.05). 3. For the difference of SPHS by health behavior. the higher score of health behavior group was more included in healthy group. There was statistically significant difference of SPHS in physical exercise, but not in smoking, drinking, sleeping and body mass index. 4. For the difference of SPHS by the latest health examination results, non-disease group was more included in healthy group, while disease group was more included in unhealthy group. From the above results, SPHS was influenced by stress, health behavior, the latest health examination results. Therefore oriental medical service for occupational health must be interested in the these influencing factors and make an effort to change their perception of health as well as physical improvement.

• 한국간호교육학회지
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• 제7권1호
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• pp.157-169
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• 2001

The purposes of this study were to investigate stress responses of senior high school students(examines) preparing for college entrance examination and to identify the relationship between stress responses and self-esteem. The subjects of this study were 261 senior high school students from three high schools located in three different Gu Seoul Korea. Data were collected from 19th to 27th march, 1998. Stress responses were measured by SOS (symptoms of stress) inventory and self- esteem was measured by Rosenberg's self-esteem scale. The data were analyzed with descriptive statistics, t-test, ANOVA and Pearson's correlation coefficient. The results were as follows : 1. The mean SOS score of subjects was 1.22 and that showed statistically significant according to gender difference (t=-6.00, P<0.0001) and father's occupations (F=3.10, P=0.006). 2. The mean self-esteem score was 2.77 and that showed statistically significant difference according to economic status(F=3.96, P=0.02) and father's occupations (F=2.71, P=0.01). 3. There was significant negative correlation between the mean SOS score and the mean self-esteem score(r=-0.31, P=0.0001). In conclusion, the examines had very high physiological and psychological stress responses and especially female showed higher stress responses than male. For this reason, school nurses are recommended (1)to develop appropriate stress management technique, (2) to provide more intensive care for health of female examines Nursing intervention should be developed for enhancing self-esteem of examines because self-esteem is negatively correlated with SOS.