• Korean Journal of Adult Nursing
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• v.23 no.5
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• pp.482-493
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• 2011

Purpose: This study was conducted to compare and identify the mediating effect of family communication in the impact of death anxiety and personal meanings of death on the attitude of dignified death near the end-of-life among Korean mid-life and old people. Methods: A cross-sectional study was conducted with 287 mid-life and old people in Seoul, Busan, and Daegu City. Data were collected through self-report questionnaires which were standardized instruments from November 2010 to March 2011. Data were analyzed by using SPSS/WIN 14. Results: The results of the study indicated that there were statistically significant differences in level of death anxiety, personal meaning of death, and the dignified death between mid-age and old-age people. In addition, family communication had full mediating effects among the mid-age, while it had partial mediating effects among the old-age in the relationships between death anxiety, personal meaning of death, and the attitude of dignified death. Conclusion: Based on the findings of the study, implications for the intervention of the dignified death and preferences for care near the end-of-life among mid-life and old people and recommendations of further study were provided.

• Journal of Animal Reproduction and Biotechnology
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• v.35 no.4
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• pp.289-296
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• 2020

Spermatogonial stem cells are self-renewal and differentiate into sperm in post-pubertal mammals. There exists a balance between the self-renewal and differentiation in the testes. Spermatogonial stem cells make up only 0.03% of testicular cells in adult mice. These cells maintain sperm production by differentiating after puberty. Therefore, analyzing the expression of genes associated with spermatogenesis is critical for understanding differentiation. The present study aimed to establish the postnatal period of cells in relation to spermatogenesis. To study the expression of differentiated and undifferentiated marker genes in enriched spermatogonial stem cells, in vitro culture was performed and cells from pup (6-8-day-old) and adult (4-months-old) testicular tissues were isolated. As a result, undifferentiated genes, Pax7, Plzf, GFRa1, Etv5 and Bcl6b, were highly increased in cultured spermaotogonial stem cells compared with pup and adult testicular cells. On the other hands, differentiated gene, c-kit was highly increased in adult testicular cells, Also Stra8 gene was highly increased in pup and adult testicular cells. This study provides a better understanding of spermatogenesis-associated gene expression during postnatal periods.

• Korean journal of applied entomology
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• v.38 no.2
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• pp.129-138
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• 1999

This study was carried out with two types of silkworm, Bombyx mori, adults having different life span: long life span (adult living for more than fifteen days; LLS), and short life span (adult living less for than five days; SLS). The fine structures of fat body cells in the young and the senescent males and females were compared in an attempt to elucidate the aging physiology of the silkworm adult. In SLS, there were many rough endoplasmic reticula (RER) and glycogen granules in the female cytoplasm, whereas the smooth endoplasmic reticula (SER) were observed in the male cytoplasm. Also in SLS, the mitochondria were swollen and had many poor osmiophillic inclusions (fatty degeneration) at three days after emergence. In LLS, compared to SLS, comparatively normal mitochondria and nuclear membrane were observed in even five day old female. In fifteen day old LLS female, however most of cell membranes were disappeared and mitochondria were abnormally expanded. Many fat granules were observed in the cytoplasm of ten day old male (LLS) which died with full autophagic vacuole (AV) collapsed at fifteen days. Therefore, it is suggested that SLS type is recommended for the study of aging tissue, because it is easier to monitor the changes in tissue structure.

• The Korean Journal of Community Living Science
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• v.27 no.2
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• pp.221-231
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• 2016

This study was conducted to investigate the effects of participation in adult education on cognitive function, and the mediating effects of relationships with children among older adults. This study employed data from the 2011 Elderly Survey, and a total of 8,668 older adults over 65-years old were used for analysis. Multiple linear regression analyses were used to examine the mediating effect of relationship with children based on the approach proposed by Baron & Kenny (1986). The results showed that participation in adult education increased cognitive function of older adults. Adult education participation also increased satisfaction with relationship with children, and relationship with children was found to have a mediating effect. These findings suggest that there is a need to recognize the importance of the relationship between older adults and children when developing education programs for older adults.

• Journal of the Korean Home Economics Association
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• v.36 no.12
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• pp.115-127
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• 1998

The purpose of this study intended to fully understand from the point of view of the elderly parent's satisfaction in the living to adult children. The subject of this study was elderly parent's over 55 years old whom live in Iksan. The sample was composed of 146 cases. The data were analyzed using SPSS statistic program. The major findings were as follows : 1) The effective indicator was related economic parts ; earns, the cost of living, educational background, sex, affection. 2) The affection related between elderly parent's and adult children was found to be high and the conflict between them was found to be low. 3) The economic interchange between elderly parent's and their adult children was influenced by religion, cohabitance with adult children. The effective indicator was conflict and dependent emotions. The serviced interchanges was influenced by spouse, sex, earns.

• Animal cells and systems
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• v.3 no.3
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• pp.269-273
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• 1999

The distribution and relative frequency of somatostatin-immunoreactive cells in the pancreas were studied during developmental stages (fetus, neonate, 1-month-old, 6-month-old and adult) of the Korean native goat by immunohistochemical methods. Somatostatin-immunoreactive cells were detected in the exocrine of all ages, in the endocrine portions (pancreatic islets) from the neonate, and in the pancreatic duct of the 1-month-old. The relative frequencies of these cells in the pancreatic islets increased with age. However, there were no age-related changes in the relative frequencies of somatostatin-immunoreactive cells in the exocrine and pancreatic duct. Generally, they were distributed in the interacinar spaces, the epithelium of the pancreatic duct, or dispersed in the peripheral zone of the pancreatic islets in all ages. However, clusters consisting of 3-4 cells were also found in the subepithelial connective tissues from the 1-month-old. In addition, the distributions in the endocrine portions of the adult were divided into two patterns: 1) they are dispersed in the marginal regions with moderate or low frequencies, or 2) in the inner zone with high frequencies.

• Parasites, Hosts and Diseases
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• v.49 no.1
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• pp.51-57
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• 2011

Four cases of gastric or intestinal myiasis are reported. The cases contain 2 males (1 child 10 years old, and 1 adult 40 years old) and 2 females (1 girl 18 years old, and 1 adult 50 years old) from Minia Governorate, Southern Egypt. Three of them, including cases no. 1, 3, and 4, were gastric myiasis, and complained of offensive hematemesis of bright red blood. Minute moving worms, larvae of the fly, were found in the vomitus. On the other hand, case no. 2 had intestinal myiasis, and complained of abdominal distention, nausea, vomiting, and diarrhea. The stool of case 2 was mixed with blood, and minute moving worms were observed in the stool. Endoscopy was performed to explore any pathological changes in the stomach of the patients. The larvae were collected and studied macroscopically, microscopically, and using a scanning electron microscope (SEM) to identify their species. Three different types of larvae were identified. The larvae isolated from case 1 were diagnosed as the second stage larvae of Sarcophaga species, and the larvae isolated from case 2 were the third stage larvae of Sarcophaga species. On the other hand, the larvae isolated from cases 3 and 4 were diagnosed as the third stage larvae of Oestrus species.

• Journal of the Korean Society of Tobacco Science
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• v.20 no.2
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• pp.144-152
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• 1998

Changes of biological components in haemolymph of Helicoverpa assulta Guenee were investigated during the development and pupae of cold-stress periods. Protein content was the highest in the larval stage, whereas it showed somewhat lower level at the cold-stressed pupae. The level of free amino acids was high in the larval and adult stages. Althougth decresed in pupal stage, the level of free amino acid remarkably increased at the cold-stressed pupae. Total lipids were a little increased at the pupal stage, after small quantity decreased in I-day old adults, and then remarkably decreased at the cold-stressed pupae. Glycogen was increased at the pupal stage, and somewhat decreased in the stage of adult, but remarkably decreased at the cold-stressed pupae. From thin layer chromatographic analysis, glucose was detected in small quantity at 1-day old pupae, one-day old adults, and cold-stressed pupae, respectively. Each .activity of acid and alkaline phosphatases was the highest in the 1 and 7-day old pupae, respectively, and both enzyme activities were increased about two-fold compared to the activity in the cold-stressed pupae. A total of 2 phosphatase isozymes were observed in throughout the developmental stage, and a new isozyme specific to cold-stressed pupae was identified.

• Journal of the Korean Home Economics Association
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• v.43 no.7 s.209
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• pp.37-51
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• 2005

The purpose of this study was to determine the level of caregiving behaviors of adult children and the main factors influencing the caregiving behaviors of adult children. This research was based on a survey conducted with 620 adults, from 30 to 59 years old, living in the Seoul metropolitan area, with at least one living parent. Statistical analysis was carried out using SPSS/WIN including frequencies, t-test, one-way ANOVA and regression analysis. no results were as follows. First, the level of caregiving behaviors of adult children varied with background variables, such as birth ranking and job for the children-related variables, and age of mother, income level and type of living for the parents-related variables. Second, the level of caregiving behaviors of adult children varied with the degree of emotional solidarity between the adult children and their parents. Third, the caregiving behaviors were significantly different according to gender as gender played an important role in differentiating the motives for caregiving behaviors.

• The Korean Journal of Community Living Science
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• v.22 no.4
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• pp.557-572
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• 2011

This study examines the effect of adult-children support network on the psychological well-being of the single and couple elderly households in rural areas. Adult-children support networks include both structural and functional characteristics. For the purpose of this research, 476 participants, who are older than 60 years old, living in rural areas, were selected. The results of this study are summarized as follows: the average degree of psychological well-being of the rural elderly was high. Emotional support from adult children was higher than economic or instrumental support. In the case of the single elderly households, adult children's economic support was the strongest variable affecting the psychological well-being. In the case of the couple elderly households, adult children's emotional support had the greater effect on psychological well-being. On the basis of this analysis, policy implications regarding the single and couple elderly households in rural areas were discussed.