• Journal of the Korean hospital association
• /
• v.34 no.4 s.296
• /
• pp.83-87
• /
• 2005

• Korean journal of applied entomology
• /
• v.42 no.4
• /
• pp.353-360
• /
• 2003

Immunodepression can be required for entomopathogenic bacteria to induce their potent pathogenicities to the target insects. Here, we raise a hypothesis that the capacity of a pathogenic bacterium to induce the target insect immunodepression has positive relationship with the degree of pathogenicity. X. nematophilus had 1,200 times as potent as another entomopathogenic bacterium, Staphylococcus gallinarum against the fifth instar larvae of silkworm, Bombyx mori, when they were Injected into the hemocoel. Although both bacteria had significant cytotokic effect on the hemocytes of B. mori, X. nematophilus gave faster and greater cytotoxicity than did S. gallinarum. In cellular immune reactions, B. mori could form 20 hemocyte nodules against the bacterial injection with 5${\times}$10$\^$5/ cells. The number of the hemocyte nodules was significantly depressed when live X. nematophilus was inject-ed, but not in S. gallinarum. Activation of prophenoloxidase (proPO) was depressed in the bacterial injection. The depression of PO activation was significantly greater in X. nematophilus infection than in S. gallinarum injection. Lysozyme activity was induced by the injection of S. gallinarum at 4 h after the treatment, but not induced in X. nematophilus at all the time. These results showed that X. nemato-philus induced greater immunodepression against B. mori and resulted in higher pathogenicity than did S. gallinarum. Therefore, this study suggests that the immunodepression induced by entomopathogenic bacteria has positive relationship with their pathogenicity.

• Korean journal of applied entomology
• /
• v.49 no.3
• /
• pp.241-249
• /
• 2010

Two groups of entomopathogenic bacteria, Xenorhabdus and Photorhabdus, are known to suppress insect immune responses by inhibiting eicosanoid biosynthesis. This study used these bacterial culture broths to develop novel biochemical insecticides against the diamondback moth, Plutella xylostella. Though the bacterial culture broths alone showed little insecticidal activity, they significantly enhanced pathogenicity of Bacillus thuringiensis against the fourth instar larvae of P. xylostella. Sterilization of the bacterial culture broth by autoclaving or $0.2\;{\mu}m$ membrane filtering did not influence the synergistic effect on the pathogenicity of B. thuringiensis. Three metablites identified in the culture broth of X. nematophila also showed similar synergistic effects. In field test, both entomopathogenic bacterial culture broth also enhanced the control efficacy of B. thuringiensis against P. xylostella.

• Korean journal of applied entomology
• /
• v.38 no.3
• /
• pp.255-260
• /
• 1999

Pathogenicity and multiplication of entomopathogenic nematode, Steinernema carpocapsae Weiser, ere analyzed in two insect hosts, Spodoptera exiga (Hubner) and Sp. litura(Fabricius). The estimated ${LC}^{50}s$(lethal concentration of the infective juveniles to kill 50% of the host insect population) were not different between tow insect species or among their developmental stages on the filter paper assay, thought the actual numbers of the infected nematodes were varied among them. The significant variation, however occurred in nematode multiplication between tow inset hosts. Temperature also gave sosignificatn effect on nematode multiplication rate that it took 6 days after infection at $25^{\circ}C$, but did 12 days at $20^{\circ}C$ to show the maximal nematode population peak($\approx$500,000 infective juveniles(IJ) in a 5th instar larva of Sp. litura and $\approx$-100,000 IJ in a 5th instar larva of Sp. exigua).

• Korean Journal of Environmental Agriculture
• /
• v.29 no.3
• /
• pp.300-303
• /
• 2010

Laboratory trial on the control effect of Beauveria bassiana against Paratlanticus ussuriensis was carried out with fungi collected from South Korea, China and Peru. All B. bassiana species from collected at each site had a strong fungicidal activity against P. ussuriensis. The Abbott's formula was the highest showing 100% mortality and the others also showed over 60% mortality. It took 3 to 6 days until katydid attained to death after inoculation with all B. bassiana treatments. From this trial, B. bassiana fungus was found to have some effects as pathogenicity of entomopathogenic activity against P. ussuriensis. So B. bassiana could be considered as one of the environment-friendly and effective pesticides for the control of P. ussuriensis.

• Journal of Digital Convergence
• /
• v.17 no.3
• /
• pp.291-304
• /
• 2019

The purpose of this study was to identify factors influencing family caregivers' reaction of persons with cancer. The study participants were 130 cancer patients and their family caregivers. Data on participant characteristics, caregiver reaction, perceived social support, and cancer related health literacy were collected from July 17 to November 7, 2018 using a structured questionnaire. Data were analyzed with the SPSS/WIN 23.0 program for descriptive statistics, using independent t-test, one-way analysis of variance, Pearson's correlation coefficient and enter multiple regression analysis. The determining factors affecting caregivers' reaction were in case of spouse of patient(${\beta}=.252$, p=.002), subjective health status(${\beta}=-.207$ p=.012), and health literacy (self-care, patient's needs and preference) (${\beta}=-.411$, p<.001; ${\beta}=.247$, p=.037 respectively), and their explanation power was about 37.9%. This finding underscores the need for developing and application of the individualized education program with health literacy improvement strategies for family caregivers of cancer patients.

• Journal of the Institute of Electronics Engineers of Korea SC
• /
• v.41 no.6
• /
• pp.61-66
• /
• 2004

To make a guide line of property control of angiography equipments, we made standard evaluation sheet forms of facility and management of angiography suite, physical properties of angiography equipments, and image quality of film and then surveyed them at 29 hospital nationwide. Survey and development of standard evaluation sheet form of physical properties of angiography equipments. By using resolution & radiation dose, physical properties of angiography equipments of 49 in number nationwide were evaluated. Most of them (91%) had good performance.

• The Journal of the Korea Contents Association
• /
• v.10 no.6
• /
• pp.344-351
• /
• 2010

Recently the demand for hospital care, while gradually increasing to expand the variety of new and carries on with the competition is faced. The quality of hospital services in this reality retain the right to survival and development of the hospital, the hospital, as well as the capabilities of the original competitive assessment is a key factor. Therefore, this study focused on hospital quality of service to the customer service center into contact with the contents of the results were comprehensive evaluation. In this study, a variable that is committed, the hospital service quality and customer satisfaction, and relationships about reuse of the hospital, the hospital's strategic management could be because of the foundation. The study quality of hospital services and customer satisfaction, and reuse of the impact of the relationship between the quality of service in the hospital, the patient happy, very significant according to the reuse of. A customer-centric future, these results provide guidelines for hospital management can be applied to further strengthen competitiveness are expected.

• Korean Journal of Psychosomatic Medicine
• /
• v.29 no.2
• /
• pp.128-135
• /
• 2021

Objectives : The aim of the present study is to investigate the impact of COVID-19 on the incidence and severity of childhood and adolescent self-harm. Methods : Medical records were retrospectively reviewed for patients under the age of 18 who visited the emergency room of Konyang University Hospital to compare the rate of self-harm attempts and the demographic, clinical, and self-harm-related of self-harm attempters aspects before and after the COVID-19 outbreak. Results : During 11 months after the COVID-19 outbreak, the proportion of the number of children and adolescents patients with self-harm and their episodes increased significantly compared to that during 11 months before the COVID-19 outbreak (𝛘²=14.397, p<0.001; 𝛘²=24.156, p<0.001). Between about the year before and after the outbreak of COVID-19, there was a significant difference in the prior self-harm history and psychiatric history among children and adolescents who visited the emergency room and the ratio of hospitalization to other departments than department of psychiatry (p<0.05; p<0.05; p<0.05). Conclusions : In the COVID-19 situation, the proportion of children and adolescents who visited the emergency room due to self-harm and admission to other departments are increasing. And it has been shown that the incidence of self-harm has significantly increased in children and adolescents with a history of prior self-harm and psychiatric past history. These findings underscore the need for the psychiatric evaluation and intervention of self-harm related high-risk groups among children and adolescents in pandemic situations.

• Research in Plant Disease
• /
• v.29 no.3
• /
• pp.258-267
• /
• 2023

Fusarium wilt, caused by Fusarium oxysporum f. sp. niveum (Fon) is a serious disease in watermelon cultivation. Most of commercialized watermelon cultivars to Fusarium wilt are susceptible in Korea. Fon isolates were divided into four races (races 0, 1, 2, and 3), based on pathogenicity in four watermelon differentials including 'Sugar baby', 'Charleston gray', 'Calhoun gray' and 'PI-296341-FR'. We obtained 7 isolates of Fon and tested to determine race of the fungal strains. Fon KACC 40902 and Fon HA were race 0 and Fon NW1, Fon NW2, Fon CW and Fon KACC 40901 were race 1. And Fon KACC 40905 was race 2, but race 3 isolate of Fon was not founded. We also tested virulence of seven Fon isolates on three-susceptible cultivars of watermelon. The isolates showed different virulence on the cultivars. In addition, to study the resistance characteristics of watermelon to Fon, we selected three moderately or highly resistant cultivars of watermelon and occurrence of Fusarium wilt in seedlings of the cultivars by seven Fon isolates was investigated. Among them, 'Calhoun gray' is highly resistant to six Fon isolates except Fon KACC 40905. On the other two cultivars, disease severity of Fusarium wilt caused by each isolate was positively correlated with the virulence of the Fon isolates. The results suggest that resistance of the watermelon cultivars to Fon isolates is likely affected by the virulence of the pathogen.