• Journal of agriculture & life science
• /
• v.44 no.1
• /
• pp.43-49
• /
• 2010

Life history of Gampsocleis sedakovi abscura Walker, an amenity sound producing insect, was investigated in Jinju, Korea from 2005 to 2007. G. sedakovi abscura had a generation per year and could be seen in the field from early March to late September. The peak emergence period of adults was early July. Developmental period from egg to adult was 357 days in average of three years in the field. Egg and nymphal periods, and adult longevity were 269, 88, and 357 days in average, respectively. The average ovipositional period was 63 days, and an adult laid 94 eggs in average throughout her life. The average longevity of adult was 90 days for female and 82 days for male. The sex ratio was 52%. G. sedakovi abscura over-wintered as egg stage in the soil. Circadian rhythm of the adult emergence showed that more than 70% of the adults emerged in the morning.

• Human Ecology Research
• /
• v.57 no.1
• /
• pp.15-26
• /
• 2019

This study showed that the association between solidarity and conflict is mediated by the communication of grandmothers and an adult child at the dyadic level. The common fate model (CFM) was designed to model mediation effects at the level of dyads. Participants consisted of 297 grandmother dyads and their adult child who were rearing preschool-aged grandchildren in Seoul and Gyeonggi-do. For analysis at the dyadic level, grandmothers and adults responded to the same questionnaire on the same variables. SPSS 23.0 performed descriptive statistical analysis and correlation analysis. The structural equation model (SEM) was estimated with AMOS 23.0. We tested the mediation model using the maximum likelihood method. Model fit index used the chi-square statistic, the incremental fit index (IFI), the comparative fit index (CFI), the root mean square error of approximation (RMSEA). The statistical significance of the indirect effect was examined using a bootstrapping procedure. The results are as follows. First, in the CFM, the direct effect between solidarity and conflict was significant. Therefore, the higher the solidarity, the lower conflict of grandmothers and an adult child. Second, the association between solidarity and conflict is mediated by communication at the dyadic level. Based on the results of this study, we discussed ways to strengthen the capacity of co-parenting between grandmothers and an adult child.

• International Journal of Advanced Culture Technology
• /
• v.11 no.4
• /
• pp.163-168
• /
• 2023

The purpose of the study was to examine the mediating effect of early childhood teachers' professional development in the relationship between intrapersonal intelligence and teacher-child interactions. We conducted a cross-sectional study with 324 early childhood teachers working at kindergartens and child-care centers in South Korea. The empirical data using survey questionnaires were collected by administering the Adult Introspective Intelligence Scale, the Professional Development Scale for Early Childhood Teachers, and the Teacher-child Interactions Scale. SPSS and Hayes' PROCESS macro weres utilized. The results showed the statistically positive correlations between the major variable and the mediating effect of early childhood teachers' professional development in the relationship between intrapersonal intelligence and teacher-child interactions.

• Parasites, Hosts and Diseases
• /
• v.39 no.2
• /
• pp.119-132
• /
• 2001

An immunoelectron microscopy employing immunogold labeling method was performed to detect tissue origin of Dl fraction (DIA) among 5 antigenic protein fractions partially purified by DEAE- anion exchange chromatography from water- soluble crude antigen (PIWA) of adult Paragonimus iloktsuenensis. Immune reactions of adult worm tissues with rabbit serum immunoglobulin immunized with crude antigen (PI-Ig) and D1 antigen (D1-Ig), as well as rat serum immunoglobulin infected with P. iloktsuenensis were observed. DlA showed strong antigenicity in the intestinal epithelium of the worms during the early infection period of 2-4 weeks after infection. The vitellaria also showed stronger antigenicity than the other tissue sites in immune reaction of tissues against all immunoglobulins from 4 to 33 weeks after vitelline development. Therefore, it is suggested that DlA was mainly originated from the intestinal epithelial tissues before the development of vitelline gland of the parasites. Immune-reactivity of two immunoglobulins (PI-Ig, Dl-Ig) was significantly different in intestinal epithelial cytoplasmic protrusions (CP) and intestinal epithelial secretory granules (SG). In the experimental group with Dl-Ig, gold particles were labeled significantly in CP than in SG when compared to the PI-Ig group. Thus, the major antigenic materials in Dl antigen having a strong antigenicity in the early infection period was considered to be originated from the intestinal epithelial tissue .

• Korean Journal of Human Ecology
• /
• v.24 no.5
• /
• pp.645-661
• /
• 2015

The purpose of this study was to investigate the effects of socio-demographic variables, adult attachment and emotion regulation style on psychological well-being of university students. We conducted a survey on 318 university students in Cheongju-si and Hongseong gun. T-test, Pearson' productive correlation, hierarchical regression analysis were used. The results were as follows: First, there was a significant difference in emotion regulation style according to university student's sex. In other words, females used more support-seeking style than males did. Second, male university students' psychological well-being was high at more active style, less anxiety attachment and avoidant/distractive style, older students, less avoidance attachment, and higher economic status. Third, female university students' psychological well-being was high at less avoidant/distractive style and more active style, older students, less anxiety attachment, and more support-seeking style. In conclusion, emotion regulation style was the strongest factor to increase university student's psychological well-being among other variables. The implications and limitations of this study were discussed.

• BMB Reports
• /
• v.56 no.9
• /
• pp.520-525
• /
• 2023

Alzheimer's disease (AD) is a progressive neurodegenerative disease characterized by cognitive decline. Several recent studies demonstrated that impaired adult neurogenesis could contribute to AD-related cognitive impairment. Adult subventricular zone (SVZ) neurogenesis, which occurs in the lateral ventricles, plays a crucial role in structural plasticity and neural circuit maintenance. Alterations in adult SVZ neurogenesis are early events in AD, and impaired adult neurogenesis is influenced by the accumulation of intracellular Aβ. Although Aβ-overexpressing transgenic 5XFAD mice are an AD animal model well representative of Aβ-related pathologies in the brain, the characterization of altered adult SVZ neurogenesis following AD progression in 5XFAD mice has not been thoroughly examined. Therefore, we validated the characterization of adult SVZ neurogenesis changes with AD progression in 2-, 4-, 8-, and 11-monthold male 5XFAD mice. We first investigated the Aβ accumulation in the SVZ using the 4G8 antibody. We observed intracellular Aβ accumulation in the SVZ of 2-month-old 5XFAD mice. In addition, 5XFAD mice exhibited significantly increased Aβ deposition in the SVZ with age. Next, we performed a histological analysis to investigate changes in various phases of adult neurogenesis, such as quiescence, proliferation, and differentiation, in SVZ. Compared to age-matched wild-type (WT) mice, quiescent neural stem cells were reduced in 5XFAD mice from 2-11 months of age. Moreover, proliferative neural stem cells were decreased in 5XFAD mice from 2 to 8 months of age. Furthermore, differentiations of neuroblasts were diminished in 5XFAD mice from 2-11 months of age. Intriguingly, we found that adult SVZ neurogenesis was reduced with aging in healthy mice. Taken together, our results revealed that impairment of adult SVZ neurogenesis appears with aging or AD progression.

• Journal of Families and Better Life
• /
• v.31 no.5
• /
• pp.33-45
• /
• 2013

Thise study is designed to demonstrate the influence of socio-demographic variables(age, education, career history and marital Status), alexithymia, burnout, and adult attachment on child disciplinary styles; childcare teachers in charge of young children were studied. The purpose of the study is to provide information about the desirable disciplinary styles of a childcare teacher in order to strengthen the quality of childcare education. The data collected in this study showed the following results: First, the age, education, career history and marital status of a teacher produced good results statistically irrelevant to the their child disciplinary style. Second, a high level of negative correlation was found among alexithymia, burnout, adult attachment and the child disciplinary style of a childcare teacher. In other words, if a teacher shows a high level of alexithymia, burnout, and adult attachment, it is likely that the teacher's child disciplinary style is coercive and neglect, and the teacher tends to give an illogical explanation. Third, in contrast to the other variables, burnout and adult attachment have a greater effect on child disciplinary style than alexithymia.

• The korean journal of orthodontics
• /
• v.25 no.6 s.53
• /
• pp.733-746
• /
• 1995

In narrow maxillary arch, midpalatal suture can be readily opened in growing children with maxillary palatal expansion. In adult patients, narrow maxilla is generally treated surgically because their growth are deemed completed due to their age. However, in patients under 25, midpalatal suture may not be closed. In addition, maxillary expansion may depend upon the closure of other maxillary sutures, which generally remain open at this stage. The present study attempted suture openings with palatal expansion on 5 female patients in their early 20's. The opening was successful in 4 patients, while only one patient showed no suture opening. In all 4 subjects, no discomfort or pain was present during s\expansion, and the successful suture opening was confirmed on occlusal x-rays. Therefore, for those patients with narrow maxilla in their early 20's, rapid palatal expansion or slow palatal expansion may offer a simple and less complicated option which, if successful, may preclude the need for surgery and thereby circumvent the psychological and financial burdens for the patients.

• Molecules and Cells
• /
• v.46 no.11
• /
• pp.672-674
• /
• 2023

Schematic diagram of the interaction between the intestinal muscularis externa (MMΦ) macrophages and the enteric nervous system (ENS) neurons during different developmental periods. At the early postnatal stage, MMΦs play a critical role in ENS maturation and refinement through synaptic pruning and enteric neuron phagocytosis. In addition, during the adult stage, a specific MMΦ subset named neuron-associated (NA)-MMΦ, supports enteric neuronal survival and functions. Conversely, enteric neurons promote the phenotypic MMΦ changes by secreting transforming growth factor-β (TGFβ), transitioning them from a phagocytic phenotype in the early postnatal period to a neuroprotective and immune-surveillant phenotype in the young adult period. Disruptions in these interactions could lead to alterations in the enteric neuron numbers, ultimately resulting in reduced gut motility.

• Journal of Digital Convergence
• /
• v.12 no.9
• /
• pp.433-443
• /
• 2014

The purpose of this research is to study characteristics of Korean adults in the cultural consumption in the first decade of the early 21st century based on . The whole course of the cultural consumption of Korean adult from 2000 to 2010 has been steadily on the upswing. For Korean adults, the first decade of the early 21st century is the time when mass culture had been generalized in their cultural consumption, regardless of any generations. Besides, the twenties have been proved to be the core generation of the cultural consumption in Korean society.