• Food Science of Animal Resources
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• v.28 no.4
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• pp.512-516
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• 2008

To search for anit-H5N1 influenza virus agent, the anti-viral activity of methanol and aqueous extracts from thirty medicinal plants were examined in this study. The plant material (30 g) was extracted with methanol (300 mL) for 24 hr at room temperature. Methanol extracts were filtered and evaporated, then freeze-dried. Aqueous extracts were prepared with dried plant material (30 g) and hot distilled water (300 mL). After 3 hr, the aqueous extracts were filtered and evaporated, then lyophilized. Extracts prepared from different plants were tested the antiviral activity against influenza viruses [A/vietnam/1194/04 (H5N1)-NIBRG-14] using the hemagglutination (HA) assay. Among the test plants, Asarum sieboldii was found to be a potent inhibitor of H5N1 influenza virus in MDCK cell culture. Virus titers were 7 log, whereas with methanol extract of Asarum sieboldii for 48 hr titers were 3 log, indicating that methanol extract of Asarum sieboldii inhibited the H5N1 influenza viruses from the infected cells.

• Parasites, Hosts and Diseases
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• v.50 no.1
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• pp.73-78
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• 2012

We report a case of intraocular gnathostomiasis diagnosed by western blot assay in a patient with subretinal tracks. A 15-year-old male patient complained of blurred vision in the right eye, lasting for 2 weeks. Eight months earlier, he had traveled to Vietnam for 1 week and ate raw wild boar meat and lobster. His best-corrected visual acuity was 20/20 in both eyes and anterior chamber examination revealed no abnormalities. Fundus examination showed subretinal tracks in the right eye. Fluorescein angiography and indocyanine green angiography showed linear hyperfluorescence of the subretinal lesion observed on fundus in the right eye. Ultrasound examination revealed no abnormalities. Blood tests indicated mild eosinophilia (7.5%), and there was no abnormality found by systemic examinations. Two years later, the patient visited our department again for ophthalmologic evaluation. Visual acuity remained 20/20 in both eyes and the subretinal tracks in the right eye had not changed since the previous examination. Serologic examination was performed to provide a more accurate diagnosis, and the patient's serum reacted strongly to the $Gnathostoma$ $nipponicum$ antigen by western blot assay, which led to a diagnosis of intraocular gnathostomiasis. This is the first reported case of intraocular gnathostomiasis with subretinal tracks confirmed serologically using western blot in Korea.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.6
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• pp.439-447
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• 2020

The study examines direct and indirect impacts of organizational commitment on employee motivation through two mediating factors - opportunistic behavior and knowledge sharing - in Vietnamese enterprises. The samples were selected by the non-probability sampling method followed convenient sampling, relatively stratified by localities in Vietnam. The sample size was 636 employees in Vietnamese enterprises. The number of collected online questionnaires was 379, while the number of valid questionnaires was 329. In the direct survey, the number of distributed questionnaires was 750, while the number of collected questionnaires was 421 and the number of valid questionnaires was 307. The total number of valid questionnaires used for analysis was 636. The study used quantitative methods with structural equation modeling analysis. The results indicate that among the components of organizational commitment, normative commitment has both direct and indirect impacts on employee motivation through two mediating factors: opportunistic behavior and knowledge sharing. Meanwhile, affective commitment has only an indirect impact on employee motivation through these mediating factors. Continuance commitment has both direct and indirect impacts; however, it has only an indirect impact on employee motivation through opportunistic behavior. In addition, the results show opportunistic behavior has a negative impact on the knowledge sharing of employees in enterprises.

• Women's Health Nursing
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• v.15 no.4
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• pp.261-269
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• 2009

Purpose: The purpose of this study was to investigate health management state during pregnancy, childbirth, and postpartum of immigrant women. Methods: A descriptive research design was employed. Data were collected from 182 immigrant women who lived in four provinces and D city. Subjects were completed the following questionnaires: demographic, medical service use, pregnancy and childbirth, and health management during the ante-postpartum. Results: The average age of subjects was 28.96 and 83 subjects (45.6%) were coming from Vietnam. 55 Subjects (30.2%) were within the low-income group with less than 4 million won per month. So, 62 subjects were uninsured women because of the expensive costs. Subjects mainly visited a health care center with their husband. On the using a health care center, subjects complained about communication difficulties and transportation problems. 42 Subjects were pregnant but 21.4% of pregnant subjects did not receive ante-natal care. Subjects got information about pregnancy and childbirth through their husbands and husband's family. Conclusion: Nursing intervention to manage the pregnancy, childbirth, and the postpartum of immigrant women need to be developed and should include strategies to take care of themselves after delivery and provide knowledge and information about ante-postpartum.

• Journal of the Korean Society of Food Culture
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• v.34 no.5
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• pp.553-566
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• 2019

This study was undertaken to examine the dietary adaptation in Korea, and utilization of university foodservice (UF), according to the nationality of foreign students. The survey was conducted from April to June in 2017, and included 604 subjects studying in a university in Busan. The questionnaire was designed to examine the adaptability to Korean food and the consumption of UF. The nationalities included students from China (63.4%), Vietnam (13.2%), Central Asia (8.9%), Southeast Asia (5.0%), and others (9.4%). Vietnamese and Southeast Asians showed higher adaptation to Korean food than Chinese or Central Asians. The degree of contribution of UF to diet was highest amongst the Chinese, followed by Vietnamese. The main reason for not consuming UF for the Chinese and Southeast Asians was 'lack of menu variety', and for Central Asians was 'no menu that can be eaten, including due to religious reasons'. In order to improve UF, all groups asked for increased 'variety of menu', and Vietnamese and Southeast Asians also asked for 'decrease in price'. In meat, fish, and vegetable menus, there were significant differences in the types and recipes of foods preferred, as per the nationality. These results indicate that different approaches by considering the national characteristics are required, to help international students adapt to Korean food, and to increase their consumption of UF.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.12
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• pp.53-62
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• 2020

The COVID 19 pandemic has led to a new global recession and is still causing a lot of issues because of the delays in the employment of people. This scenario has severe consequences for many countries' labor markets in the world. This problem's complexity and importance requires an integrated method of subjective and objective evaluation rather than intuitive decisions. This research aims to investigate sustainable indexes for assessing the unemployment problem by using a Multi-Criteria Decision-Making Model (MCDM). Grey theory and Decision Making Trial and Evaluation Laboratory (GDEMATEL) are deployed to transform the experts' opinions into quantitative data. The analysis based on 20 crucial criteria is employed to determine the weights of sustainability of unemployment problems. The results revealed that the top ten of determinants are Economic growth, Industrialization, Foreign direct investment, Real GDP per capita, Education level, Trade Openness, Capacity Utilization Rate, Urbanization, Employability skills, Education system expansion, which have the most significant effects on the unemployment rate under COVID 19 impacts. Furthermore, GDEMATEL could effectively assess the sustainable indicators for unemployment problems in "deep and wide" aspects. The study proposes the Grey MCDM model, contributes to the literature, provides future research directions, and helps policymakers and researchers achieve the best solutions to the unemployment problems under "economic shocks."

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.7
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• pp.941-946
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• 2010

For the long-term goal of using peanut sprouts as a functional food material, the total polyphenol content and the antioxidant activity of methanol extracts were examined with use of 9 day-old peanut sprouts and peanuts collected in Chungbuk, Gyeongbuk and Jeonbuk provinces of Korea, China and Vietnam. The polyphenol levels in the sprout extracts were higher than those of the peanut extracts. The phenolic content of the Gyeongbuk peanut sprout extract (20.4 mg/g) was the highest of the tested samples. After 9 days of germination the peanut sprout extracts had higher activities than those of the peanut extracts. In particular, the activity of Gyeongbuk peanut sprout extract was the highest (37.67% at a concentration of $200\;{\mu}L/mL$), and its reducing power demonstrated a similar trend. The DPPH radical scavenging activities were measured for methanol extracts of cotyledon, root and stem of Gyeongbuk peanut sprouts; the highest (90.96% at a concentration of $200\;{\mu}L/mL$) was the activity of cotyledon. ABTS radical scavenging and $\beta$-carotene bleaching activities also were higher in the cotyledon extract than in those of the root or the stem. The resveratrol content was higher in the Gyeongbuk peanut sprout extract than in the Gyeongbuk peanut extract ($15.05\;{\mu}g/g $and $1.42\;{\mu}g/g$, respectively). These results suggest that peanut sprouts potentially could be used as a functional food material exhibiting antioxidant effects.

• Journal of Periodontal and Implant Science
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• v.46 no.5
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• pp.329-336
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• 2016

Purpose: The aim of this study was to clinically assess the impact of a prefabricated implant-retained stent clipped over healing abutments on the preservation of keratinized mucosa around implants after implant surgery, and to compare it with horizontal external mattress sutures. Methods: A total of 50 patients were enrolled in this study. In the test group, a prefabricated implant-retained stent was clipped on the healing abutment after implant surgery to replace the keratinized tissue bucco-apically. In the control group, horizontal external mattress sutures were applied instead of using a stent. After the surgical procedure, the width of the buccal keratinized mucosa was measured at the mesial, middle, and distal aspects of the healing abutment. The change in the width of the buccal keratinized mucosa was assessed at 1 and 3 months. Results: Healing was uneventful in both groups. The difference of width between baseline and 1 month was $-0.26{\pm}0.85mm$ in the test group, without any statistical significance (P=0.137). Meanwhile, the corresponding difference in the control group was $-0.74{\pm}0.73mm$ and it showed statistical significance (P<0.001). The difference of width between baseline and 3 months was $-0.57{\pm}0.97mm$ in the test group and $-0.86{\pm}0.71mm$ in the control group. These reductions were statistically significant (P<0.05); however, there was no difference between the 2 groups. Conclusions: Using a prefabricated implant-retained stent was shown to be effective in the preservation of the keratinized mucosa around implants and it was simple and straightforward in comparison to the horizontal external mattress suture technique.

• Journal of Hydrogen and New Energy
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• v.21 no.5
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• pp.435-441
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• 2010

To verify the possibility of a power generation system using biogas from the waste of pig farm for rural electric production, a SI gasoline engine is modified to use biogas fuel and was installed in a 20 KVA power generation system. An electronic speed regulation unit is developed to keep the system speed at 1500 rpm. Experimental investigations have been carried out to examine the performance characteristics of power generation system (such as: system frequency, phase output voltage,$\ldots$). In addition, the operating parameters and output emissions ($NO_x$, HC, and $CO_2$) of biogas-fueled engine are preliminary evaluated and analyzed for the change of system load. Results indicated that the researched power generation system shows a high stability of output voltage and frequency with help of speed regulator. Biogas fuel (mainly $CH_4$ and $CO_2$) has an environmental impact and potential as a green alternative fuel for SI engine and they would not require significant modification of existing engine hardware. Output emissions of biogas-fueled engine are found to be relative low. $NO_x$ emission increases with the increase of output electric power of the power generation system.

• Journal of Food Hygiene and Safety
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• v.33 no.4
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• pp.280-288
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• 2018

In this study, an approach for the analysis of the five cephalopod species (octopus, long-arm octopus, squid, wet-foot octopus, beka squid) consumed in the Republic of Korea is developed. The samples were collected from the Southeast Asian countries Thailand, Indonesia, Vietnam, and China. The SYBR-green-based real-time qPCR method, based on the mitochondrial DNA genome of the five cephalopods was developed and validated. The intergroup variations in the mitochondrial DNA are evident in the bioinformatic analysis of the mitochondrial genomic DNA sequences of the five groups. Some of the highly-conserved and slightly-variated regions are identified in the mitochondrial cytochrome-c-oxidase subunit I (COI) gene, 16s ribosomal RNA (16s rRNA) gene, and 12s ribosomal RNA (12s rRNA) gene of these groups. To specify each five cephalopod groups, specific primer sets were designed from the COI, 16s rRNA and 12s rRNA regions. The specific primer sets amplified the DNA using the SYBR-green-based real-time PCR system and 11 commercially secured animal tissues: Octopus vulgaris, Octopus minor, Todarodes pacificus, Dosidicus gigas, Sepia esculenta, Amphioctopus fangsiao, Amphioctopus aegina, Amphioctopus marginatus, Loliolus beka, Loligo edulis, and Loligo chinensis. The results confirmed by a conveient way to calculate relative amplification levels between different samples in that it directly uses the threshold cycles (Ct)-value range generated by the qPCR system from these samples. This genomic DNA-based molecular technique provides a quick, accurate, and reliable method for the taxonomic classification of the animal tissues using the real-time qPCR.