• Animal Bioscience
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• v.35 no.6
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• pp.938-947
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• 2022

Objective: The beneficial effects of glycine were tested in piglets with diquat-induced hepatic injury. Methods: Thirty-two piglets were assigned by a 2×2 factorial experimental design including glycine supplementation and diquat challenge. After 3 weeks of feeding with a basic diet or a 1% glycine supplemented diet, piglets were challenged with diquat or saline. After 1 week later, the piglets were slaughtered and samples were collected. Results: Our results indicated that glycine alleviated diquat induced morphological hepatic injury, decreased the activities of plasma alanine aminotransferase, aspartate aminotransferase and glutamyl transpeptidase in the piglets under diquat challenge, and increased total antioxidant capacity and antioxidative enzyme activity significantly. Adding glycine enhanced the concentrations of hepatic adenosine triphosphate and adenosine diphosphate. Transmission electron microscope observation showed that diquat induced clear hepatocytes ferroptosis and its effect could be alleviated by glycine to a certain degree. Moreover, glycine significantly affected mRNA and protein expression of ferroptosis-related signals in the liver. Conclusion: These results demonstrated that glycine attenuated liver damage via inhibiting ferroptosis.

• Steel and Composite Structures
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• v.48 no.2
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• pp.191-206
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• 2023

The present research investigates how micromechanical models affect the behavior of Functionally Graded (FG) plates under different boundary conditions. The study employs diverse micromechanical models to assess the effective material properties of a two-phase particle composite featuring a volume fraction of particles that continuously varies throughout the thickness of the plate. Specifically, the research examines the vibrational response of the plate on a Winkler-Pasternak elastic foundation, considering different boundary conditions. To achieve this, the governing differential equations and boundary conditions are derived using Hamilton's principle, which is based on a four-variable shear deformation refined plate theory. Additionally, the Galerkin method is utilized to compute the plate's natural frequencies. The study explores how the plate's natural frequencies are influenced by various micromechanical models, such as Voigt, Reuss, Hashin-Shtrikman bounds, and Tamura, as well as factors such as boundary conditions, elastic foundation parameters, length-to-thickness ratio, and aspect ratio. The research results can provide valuable insights for future analyses of FG plates with different boundaries, utilizing different micromechanical models.

• ETRI Journal
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• v.45 no.5
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• pp.887-898
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• 2023

Aerial base stations (ABSs) seem promising to enhance the coverage and capacity of fifth-generation and upcoming networks. With the flexible mobility of ABSs, they can be positioned in air to maximize the number of users served with a guaranteed quality of service (QoS). However, ABSs may be overloaded or underutilized given inefficient placement, and user association has not been well addressed. Hence, we propose a three-dimensional ABS placement scheme with a delay-QoS-driven user association to balance loading among ABSs. First, a load balancing utility function is designed based on proportional fairness. Then, an optimization problem for joint ABS placement and user association is formulated to maximize the utility function subject to statistical delay QoS requirements and ABS collision avoidance constraints. To solve this problem, we introduce an efficient modified gray wolf optimizer for ABS placement with a greedy user association strategy. Simulation results demonstrate that the proposed scheme outperforms baselines in terms of load balancing and delay QoS provisioning.

• Women's Health Nursing
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• v.30 no.2
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• pp.153-163
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• 2024

Purpose: This study aimed to investigate the experiential meaning of child-rearing for marriage immigrant women in Korea in the context of the coronavirus disease 2019 (COVID-19) pandemic. Methods: Using the hermeneutic descriptive phenomenology framework developed by Colaizzi, 10 marriage immigrant women rearing preschool and school-age children were invited through purposive and snowball sampling from two multicultural support centers in Korea. The participants were rearing one or two children, and their original nationalities were Vietnamese, Japanese, Cambodian, and Chinese. Individual in-depth, face-to-face, semi-structured interviews were conducted from September 1 to November 30, 2021. We extracted significant statements from the transcripts, transformed these into abstract formulations, and organized them into theme clusters and themes to authentically capture the essence of the participants' subjective experiences. Results: Four theme clusters with 14 themes were derived. The four theme clusters identified were "navigating child healthcare alone," "guilt for not providing a social experience," "worry about media-dependent parenting," and "feelings of incompleteness and exclusion." This study explored the perspectives of mothers raising children as marriage migrant women who experienced physical and emotional health crises due to the COVID-19 pandemic. Conclusion: The findings underscore that marriage immigrant women encountered heightened challenges in managing their children's health and well-being during the COVID-19 pandemic due to linguistic and cultural barriers limiting access to healthcare and information. Additionally, these women experienced considerable emotional stress from perceived inadequacies in providing a holistic social and developmental environment for their children under extensive social restrictions.

• Journal of the Korean Society of Costume
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• v.65 no.3
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• pp.1-14
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• 2015

The purpose of this study is to identify cross-cultural features among Korea, China, and Japan by comparing differences in facial awareness, attractiveness preferences, and consideration of facial parts in a group of Korean, Chinese, and Japanese men and women as they evaluated the faces of Korean women in their 20s. A survey was conducted targeting male and female Korean, Chinese, and Japanese college students in their 20s. Frequency analysis, ANOVA, Duncan test, factorial analysis, and reliability analysis, MANOVA were carried out using SPSS 18.0. The results of this study are as follows: Faces of Korean women in their 20s were evaluated by Korean, Chinese, and Japanese men and women in their 20s and were classified into four categories as 'Youthfulness', 'Classiness', 'Friendliness' and 'Activeness'. Differences in facial image awareness were observed depending on nationality and gender. Korean participants were found to place importance on overall morphological factors; The Japanese focused on the eyes; and the Chinese on the skin color. Women of all nationalities showed, on average, a higher awareness of facial parts than men. No significant differences in facial attractiveness preferences were found based on nationality or gender, but there were differences in how the participants evaluated faces for attractiveness, showing that reasons for preferences may vary even if the preferences are the same.

• Journal of the Korean association of regional geographers
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• v.15 no.3
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• pp.393-408
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• 2009

The drastic growth of transnational marriage since the mid-1990s has been a new challenge to Korea. This article aims to provide a comprehension of new ethnicity by focusing on transnational marriage migration in Korea. A steep increase of foreign brides from China and Southeast countries such as Vietnam and the Philippines can be understood in terms of globalization from below. In this context, Korean trend is similar to Taiwan and Japanese ones. But, there are also some differences between them. The inflow of foreign brides has been gradually weakened since 2005 in Korea, as Taiwan has experienced since 2003. In the ratio of foreign brides among total marriage in Korea, rural area show in average two-fold higher than urban areas. However, most foreign brides have settled down in urban areas in aspect of absolute number. Korean Chinese wives most densely concentrate in urban area, followed by Chinese wives, Nevertheless, there are significant differences among foreign brides' residential areas with their nationalities. In this point, the geography of new ethnicity with foreign brides in Korea is likely to be a multi-dimensional space.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.1
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• pp.169-173
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• 2012

Objective: This study aimed to explore the differences in the curative and side effects of chemoradiotherapy on esophageal cancer (EC) among Xinjiang Han, Uigur and Kazakh patients. Methods: 170 patients with IIA stage-IV of esophageal squamous cell carcinoma were analyzed retrospectively. Based on different nationalities, they were divided into the Han, Uigur and Kazakh groups. The 1-, 2- and 3-year survival rates, incidence of the side effects (including hematological toxicities, radioactive esophagitis and percutaneous reactions) and application of antibiotics and harmonics were compared among the groups. There was no significant difference in the short-term curative effects among the Han, Uigur and Kazakh groups. The 1- 2- and 3-year survival rates of the three groups were 84%, 40%, 26%; 78%, 27%, 18%; and 60%, 21%, 12% ($x^2$=14.497, P<0.05). The incidence rate of hamatological toxicity ${\geq}$Grade 2 in the Kazakh group was significantly lower than that in the Han or Uigur group. Results: The incidence rates of radioactive esophagitis and percutaneous reactions Grade 2 in the Han group were significantly higher than those in the Uigur or Kazakh group. There was no significant difference in the types of applied antibiotics among the groups, but there were significant differences in the days of antibiotic application and proportion of patients receiving harmonics between the Hans and either of other groups. Conclusion: Chemoradiotherapy shows a better effect in the long-term survival rate among Han EC patients compared with Uigur or Kazakh EC patients. Uigur and Kazakh patients show a better tolerance to the side effects of chemoradiotherapy compared with Hans.

• Asian-Australasian Journal of Animal Sciences
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• v.30 no.6
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• pp.788-796
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• 2017

Objective: In order to improve fermentation quality of natural grasses, their silage preparation and fermentation quality in meadow steppe (MS) and typical steppe (TS) were studied. Methods: The small-scale silages and round bale silages of mixed natural grasses in both steppes were prepared using the commercial lactic acid bacteria (LAB) inoculants Chikuso-1 (CH, Lactobacillus plantarum) and cellulase enzyme (AC, Acremonium cellulase) as additives. Results: MS and TS contained 33 and 9 species of natural grasses, respectively. Stipa baicalensis in MS and Stipa grandi in TS were the dominant grasses with the highest dry matter (DM) yield. The crude protein (CP), neutral detergent fiber and water-soluble carbohydrate of the mixed natural grasses in both steppes were 8.02% to 9.03%, 66.75% to 69.47%, and 2.02% to 2.20% on a DM basis, respectively. All silages treated with LAB and cellulase were well preserved with lower pH, butyric acid and ammonia-N content, and higher lactic acid and CP content than those of control in four kinds of silages. Compared with CH- or AC-treated silages, the CH+ AC-treated silages had higher lactic acid content. Conclusion: The results confirmed that combination with LAB and cellulase may result in beneficial effects by improving the natural grass silage fermentation in both grasslands.

• Journal of the Korean housing association
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• v.24 no.4
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• pp.1-8
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• 2013

Recently international marriage has been increasing steadfastly in Korea and its diversity of nationality has been expanding also. Korean government and academic circles are actively studying on such trends in population to find out proper measures to cope with such social changes. But their studies on improving the residential environment that is the base of the essential three factors of life, clothing, food and housing are not sufficient enough. Therefore it is necessary to study in depth and diversity about the residential environments of multi-culture families that are the base of their life. It is necessary to comparatively study the residential status and demands of these immigrants by marriage. The purpose of this study is to comparatively study the residential status and demand of immigrant women by marriage according to their nationalities. The objects of this study are the immigrant women by marriage from China, Vietnam and Cambodia who take the high portion of immigrant women in Jeonju-si and survey was used as study method. The result of this study revealed that the general characteristics, residential status and demands of immigrant women showed certain differences and the direction of residential plans for them in future based on these differences was proposed. This study is meaningful as basic information to improve the residential conditions of the multi-culture families in order to enhance their quality of life in preparation for the coming society of multi-culture.

• Journal of Environmental Science International
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• v.19 no.8
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• pp.1047-1055
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• 2010

This research conducted a vegetation survey on Mt. Changbai which are habitats of Papaver radicatum var. pseudoradicatum to obtain a basic data for artificial cultivation. The habitas of P. radicatum var. pseudoradicatum consisted of two communities as Dryas octopetala var. asiatica community and Aconogonon ajanense community. The community units as D. octopetala var. asiatica community and A. ajanense community belong to alpine vegetation in Mt. Changbai. A. ajanense community is distributed around altitude of 2007-2061m, and D. octopetala var. asiatica community is distributed altitude of 2350-2570m at relatively high elevation. According to the correlation between the vegetation structure and elevation. This vegetation structure can be simplified at the herb layer. The vegetation is classified into D. octopetala var. asiatica community and A. ajanense community on the axis 1 basis in the BC ordination analysis. Further, there appeared higher plant life totalling to 40 taxa comprising 35 species, 4 varieties and 1 forma with 20 families and 34 genuses at the whole survey area. Among these, Cyperaceae and Ericaceae plants excellent in resistance to environment was surveyed the most, accounting for 16%.