• Parasites, Hosts and Diseases
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• v.24 no.1
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• pp.15-24
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• 1986

The species composition, population density, and seasonal prevalence of vector mosquitoes in an inland area of Kyungoook Province were studied, based on light trap and human bait trap collections, and the recent patterns of infestation for infective larvae of Brugia malayi in these vector hosts were investigated from May to November in 1985. Nine species in four genera of mosquitoes were collected by light trap, human bait trap, and/or by nets. Anopheles sinensis Wiedemann was the most abundant species collected by light traps during this year. Culex tritaeniorhynchus Giles was the second abundant species, and Aedes vexans nipponii (Theobald) ranked third in total abundance. The earlist time when A. sinensis were found was the middle of May. At that time the temperature ranged from $14.3^{circ}{\;}to{\;}22.8^{\circ}C$ and the humidity 53~90 per cent. The month of highest average nightly catch was July, when the temperature was between $21.5^{circ}{\;}and{\;}30.6^{\circ}C$ and the humidity 72~91 per cent. The peak time of biting activity of mosquitoes was different in each month, i.e. between 22:00~23:00 in July, and 20:00"-'21:00 hours in September, when the temperature was between $24.3^{circ}{\;}and{\;}26.5^{\circ}C$ and the humidity 73~88 per cent in the field. While infective larvae of B. malayi were reported to have been found in one species of mosquito in 1975, no larvae were found in any species collected in this survey.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.24 no.11
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• pp.1098-1103
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• 2013

A low-noise amplifier(LNA) using series RLC matching network and resistive feedback at 8 GHz is presented. Inductive degeneration is used for the input matching with which the proposed LNA shows quite a wide bandwidth in terms of $S_{21}$. An equivalent circuit model is deduced for input matching by conversion from parallel circuit to series resonant circuit. By exploiting the resistive feedback and series RLC input matching, fully integrated LNA achieves maximum $S_{21}$ of 8.5 dB(peak to -3 dB bandwidth is about 3.5 GHz) noise figure of 5.9 dB, and IIP3 of 1.6 dBm while consuming 7 mA from 1.2 V supply.

• Applied Biological Chemistry
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• v.14 no.2
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• pp.171-175
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• 1971

Gibberella fujikuroi(imperfect stage Fusarium moniforme) a soil fungi is well known as the producer of plant growth regulator Gibberellins. The present work was planned for the isolation of the active strains of Gibberella fujikuroi from the native paddy soils. Twenty two strains were isolated from the infected rice seedlings collected from four local areas. Pyongtaek, Yesan, Tangjin and Sunchon and screened through the activity test for the production of Gibberellins. The strains P-105, Y-14 and T-58 yielded higher activity than the others isolated and the referred strain IAM-8048. The strains Y-5, Y-7, T-54 and S-152, however, were less promotive or rather inhibitory in the growth of rice seedlings. Six different kinds of culture media developed by Cross, Raulin-Thom, Borrow, West, Stodola and Kurosawa respectively were compared with each other for the production of Gibberellins and the best result was obtained with Raulin-Thom's media(glucose 16% and $NH_4NO_3$ 0.24%).

• The Journal of the Korea Contents Association
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• v.15 no.2
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• pp.313-323
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• 2015

This study was performed to examine the prevalence of and risk factors for depression and anxiety among breast cancer survivors in their 40s. Completed questionnaires were collected from 609 breast cancer survivors in their 40s who agreed to participate the study. The mean scores of CES-D and GAD-7 were 16.35(SD=9.24) and 4.25(SD=4.17), respectively. Nearly 47.7% of the participants had depression and 10.3% had anxiety. The mean score of pain severity was 1.91(SD=1.60) and 10.9% of the participants reported more than moderate pain. The final model in the hierarchical regression analysis showed that pain interference, unemployment, the type of live-in partner, and past psychiatric disease were the significant risk factors for depression, and pain interference, unemployment and past psychiatric disease for anxiety. These results show the prevalence of depression and anxiety among breast cancer survivors in their 40s is high and suggest appropriate psychosocial intervention should be provided for high risk groups based on those risk factors.

• KSBB Journal
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• v.17 no.3
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• pp.266-270
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• 2002

Alcohol fermentation conditions for the production of Chinese quince wine were investigated. Ethanol was produced maximally when 5% Saccharomyces cerevisiae was added to Chinese quince iuices and fermented at $25^{\circ}C$ for 10 days. Physiological functionalities of the Chinese quince wines were determined and compared with those of Chinese quince liquors made by seating of Chinese quince in a mixture of commercial soju and 10% sugar for 30 days and 60 days. Angiotensin-converting enzyme inhibitory activity and fibrinolytic activity of the Chinese quince wine were 36.7% and 24.0 U, respectively. Tyrosinase inhibitory activity and nitrite scavenging activity of the Chinese quince liquors were 96.7% and 52.7%, respectively and it were similar to those of the Chinese quince liquor trade from soaking of 60 days. Chinese quince wine was showed strong antibacterial activities against Staphylococcus aureus (8.5 mm of clear zone) and Klebsiella pneumonia(4.0 mm of clear zone).

• The Korea Journal of Herbology
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• v.24 no.4
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• pp.189-195
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• 2009

Objectives : In this study, the effect of Dipsaci Radix(DR, Dipsacus asperoides C.Y. Cheng et T. M. Ai) water extract on LPS-induced inflammatory response in RAW264.7 cells were investigated. Methods : Dried roots of DR was extracted with water for 3 h(DR-W extract). RAW264.7 cells, a mouse macrophage line, were incubated with different concentrations of DR-W extract for 30 min and then stimulated with LPS at indicated times. Cell toxicity was determined by MTT assay. The concentrations of nitric oxide (NO) and prostaglandin $E_2$ ($PGE_2$) were measured by Griess assay and enzyme immunoassay (EIA), respectively. The expression of inducible nitric oxide synthease (iNOS) and cyclooxyganase (COX)-2 mRNA and protein was determined by RT-PCR and Western blot, respectively. Results : DR-W extract was significantly inhibited LPS-induced productions of NO and PGE2 in RAW264.7 cells. DR-W extract was not suppressed the expressions of iNOS mRNA and protein in LPS-stimulated RAW264.7 cells. Conclusions : This study suggests that DR-W extract can attenuate inflammatory response via inhibition of the NO and PGE2 production in activated macrophages.

• Journal of Digital Convergence
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• v.18 no.10
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• pp.381-387
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• 2020

In order to study the similarities and differences of user experience of contactless retail services between Chinese and Korean users, this study focuses on E-mart 24 Self Convenience Store Gimpo DC Branch, Conducted in-depth interviews with Chinese and Korean users who have experience. The interviews are based on the 7 principles of Peter Morville's Honeycomb Model. As a result, the satisfaction of Chinese users is higher than that of Korean users. Human touch, and the desire for a faster society made Korean users more resistant to E-mart 24 Self Convenience Store. Chinese users raised concerns about the inconvenience of the system with little consideration for foreign users. It is expected that this study will help E-mart 24 Self Convenience Store to satisfy users from more cultural backgrounds.

• Journal of The Korean Society of Grassland and Forage Science
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• v.37 no.1
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• pp.35-43
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• 2017

This study was to research the relationships between rice straw degradation and changes of fibrolytic bacteria population during the in vitro rumen fermentation. Dry matter(DM) digestion of rice straw and population of fibrolytic bacteria were measured at the 0. 4, 8, 12 and 48 hours during the incubation. The populations of F. succinogenes. R. albus and R. flavefaciens were defined as log copy number of 16S rDNA by technical method of Quantitative real-time PCR. Total population of F. succinogenes, R. flavefaciens and R. albus was sum of bactera attached on rice straw and suspended in medium. It's population was increased with incubation, reached top level of 29.0 Log copy No at the 24 hour and then decreased. In the meantime, DM digestion of rice straw showed the higher increasement from the 8 hour to the 24 hour than from the 0 hour to the 8 hour, and then a slowdown in increasing trend of digestibility. Attachments of F. succinogenes, R. flavefaciens and R. albus were detected immediately after start of in vitro rumen incubation. At the same time, the colonized bacterial share were respectively 34.5%, 84.4% and 67.9% in total population. All of them was reached the highest colonized bacterial share above 94.7% at the 4 hour incubation. However population of attached bacteria was shown the highest level at the 12 hour or the 24 hour incubation. Kinetics of colonization were formed area of top speed from the 12 hour to the 24 hour and respectively reached 10.33, 9.28 및 8.30 Log copy No/h/g DM at the 24 hour by F. succinogenes, R. flavefaciens and R. albus. The kinetics of rice straw degradation was formed top level of 0.95% DM/h at the 24 hour. The present results gave clear evidence that degradation of rice straw was increased with the development of total fibrolytic bacteria in process of rumen fermentation. Also, their attachment was largely occurred immediately after insertion of rice straw, the colonized bacteria was actively proliferated, and then degradation of rice straw was maximized.

• YAKHAK HOEJI
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• v.44 no.6
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• pp.494-498
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• 2000

Noble 7,7'-substituted (or unsubstituted) 4-oxo-1,1',2,2'-dibenzothiazine-3,3'-dicarboxylic acid methyl ester 1,1,1',1'-tetraoxide 3,4'-yl ethers 2a-h were synthesized through the dehydration of 7-substituted (or unsubstituted) 4-hydroxy-1,2-benzothiazine-3-carboxylic acid methyl ester 1,1-dioxides 1a-h using silver(I) oxide for the development of new nonsteroidal antiinflammatory drugs (NSAIDs). Optimal reaction was proceeded through stirring of distilled acetone using 100 mol% of silver(I) oxide at room temperature for 24-68 hrs.

• Journal of Nutrition and Health
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• v.3 no.2
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• pp.101-106
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• 1970

Radioactive Phosphorus $(^{32}P)$ was administered intramuscularlly to the newly hatched chicken in the purpose of determination of the uptake and the distribution, as related to sex and hour differences of the several organs of the bodies. $2\;{\mu}\;of\;^{32}P$ was administered to each chick, and the distribution of 32P was observed in 1 hour and 24 hours after administration. In this experiment 80 heads of chicken were used(40 chicken were one day and 40 chicken were 7 days old) and the results obtained as follows: 1. The tissue showed an uptake rate of $^{32}P$ dose per 100 milligram of tissue in one day old chicken, with the following sequence: Males (1 hour): Femur. Liver. G., Muscle. Testis. Brain (24 hour): Femur, Testis, Gastrocnemius Muscle, Liver, Brain. Female(1 hour): Femur, Liver, Gastronemius Muscle, Ovary, Brain. (24 hour): Femur, Liver, Gastrocnemius Muscle, Ovary, Brain. 2. In 1 hour, the uptake rate of $^{32}P$ of the tissues showed significant difference between the male and the female except the gastrocnemius muscle and the brain in one day old group, but they were no significance except the testis and ovary after 24 hours. 3. The distribution of $^{32}P$ of the tissues exhibited higher in 1 hour than in 24 hours except the femur, the brain of the male and female, the brain and gastrocnemius muscle of the female in one day old group. 4. The tissue showed an uptake rate of $^{32}P$ dose per 100 miligram of tissue in 7days old chicken, with the following sequence: Male (1 hour): femur, liver, gastrocmenius muscle, testis, brain. (24 hour): femur, testis, gastrocmenius muscle, liver, brain. Female(1 hour): femur, liver, gastrocmenius muscle, ovary, brain. (24 hour): femur, ovary, liver, gastrocmenius muscle, brain. 5. The distribution of $^{32}P$ of the tissues showed no significant difference between the male and the female except the testis and ovary after 24 hours in 7 days old chicken group. 6. The distribution of $^{32}P$ the tissues exhibited higher in 1 hour in 24 hours except the femur, the brain of the male and the female, the brain and the ovary of the female in 7 days old chicken group.