• Journal of Animal Science and Technology
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• v.44 no.4
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• pp.383-390
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• 2002

The data were consisted of 1,262 records for carcass traits observed at Hanwoo steers from 1998 to 2001 at Namwon and Deakwanryung branch of National Livestock Research Institute, Rural Development Administration. Pedigrees of young bulls were traced back to search for magnifying inbreeding. Genetic parameters for carcass traits with Gibbs sampling in a threshold animal model were compared to estimates with REML algorithm in linear model. As the results, most of bulls were not inbred and sire pedigree group was non-inbred population. However, most of the bulls fell in some relationship with each other. Heritability estimates as fully posterior means by Gibbs samplers in threshold model were higher than those by REML in linear model. Furthermore, these estimates in threshold model using GS showed higher estimates than estimates using tested young bulls in previous study and same model. Heritability estimate by GS for marbling score was 0.74 and genetic correlation estimate between marbling score and body weight at slaughter was –0.44. Further study for correlation of breeding values between REML algorithm in linear model and Gibbs sampling algorithm in threshold model was needed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.10
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• pp.401-412
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• 2017

This study was conducted to examine the effects of depression, sleep and self-esteem on quality of life of elders living at home. A descriptive survey study was conducted based on a survey of 285 older people in person at five senior welfare centers in J city from May 20, 2016 to 9. The data were analyzed by at-test, ANOVA, Pearson's correlation coefficients and multiple regression using SPSS WIN 21.0. The mean scores were depression $7.27{\pm}3.80$, sleep $30.75{\pm}9.35$, self-esteem $36.40{\pm}5.30$ and quality of life $8.05{\pm}2.53$. Depression(r=0.491, p<0.001) and sleep(r=0.590 p<0.001) were positively correlated with quality of life and negatively correlated with self-esteem (r=-0.234, p<0.001). The results of the regression indicated that depression, sleep, and self-esteem explained 39.9% of the variance in quality of life. Overall, these results suggest that depression, sleep and self-esteem were associated with quality of life. Therefore it is necessary to develop strategies to reduce depression and sleep disorders for community dwelling elders to improve quality of life.

• Journal of Korean Medicine Rehabilitation
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• v.23 no.3
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• pp.45-53
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• 2013

Objectives The objective of present study was to investigate the effect of Ojeoksangamibang ($W\check{u}j\bar{i}s\check{a}nji\bar{a}w\grave{e}if\bar{a}ng$) extract on recovery of liver function in carbontetrachloride ($CCl_4$)-exposed rat. Methods Male rats weighing $230{\pm}7.21g$ fed experimental diet for 1 week and 28 rats were divided into 4 groups. Each of 7 rats was devided into a control group and experimental groups. We fed a control group of rats a basal diet and administered normal saline (100 mg/kg, 1 time/1 day) for 3 weeks. And we fed each experimental group of rats basal diet and administered an extract of Ojeoksangamibang extracts (100 mg/kg, 200 mg/kg, 300 mg/kg, 1 time/1 day) for 3 weeks. We measured lipid of plasma and liver, concentration of proinflammatory cytokines ($IL-1{\beta}$, IL-6 and IL-10). Statistical analysis was done by one-way analysis of variance (ANOVA) and Duncan's multiple range test with significance level at p<0.05. Results Plasma a-fetoprotein (AFP) and total protein concentration showed a tendency to decrease in Ojeoksangamibang extract-treated groups. However, plasma albumin concentration showed no significant differences in all treatment groups. Activity of plasma Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT) in the Ojeoksangamibang extract-treated groups, increased addition amount of Ojeoksangamibang extracts tended to decline. Alkaline phosphatase (ALP), lactate dehydrogenase (LDH) and ${\gamma}$-glutamyl transferase (${\gamma}$-GT) activities showed a tendency to decrease in Ojeoksangamibang extract-treated groups, increased addition amount of Ojeoksangamibang extracts tended to decline. Concentration of plasma triglyceride and total cholesterol showed a lower value than that of control group. The liver $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ concentration were decreased, and IL-10 was increased in Ojeoksangamibang extract groups, compared to control group. Plasma $IL-1{\beta}$, IL-6 and $TNF-{\alpha}$ concentration were decreased, and IL-10 was increased in Ojeoksangamibang extract groups, compared to control group. Conclusions This study suggested that Ojeoksangamibang may alleviate liver inflammatory reaction induced by liver toxicity.

• Applied Chemistry for Engineering
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• v.5 no.2
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• pp.327-336
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• 1994

The synergistic effects in mechanical mixture catalysts of Mo-V-O and metal oxide were investigated for the selective oxidation of acrolein. The metal oxides used are $SnO_2$, ${\alpha}-Sb_2O_4$, $WO_3$, ${\alpha}-Al_2O_3$, CuO, $MnO_2$, $Cu_2O$, MgO, CoO, and ZnO. Mechanical mixtures of Mo-V-O plus $SnO_2$ or ${\alpha}-Sb_2O_4$ had resulted in higher conversion of acrolein and higher yield of acrylic acid than Mo-V-O. The origin of the synergy is attributed to the cooperation of Mo-V-O and $SnO_2$ or ${\alpha}-Sb_2O_4$, in which $SnO_2$ or ${\alpha}-Sb_2O_4$ forms dissociated oxygens at their oxygen vacancies and transports them to Mo-V-O. $Cu_2O$, MgO, CuO, and $MnO_2$, increased conversion of acrolein but decreased yield of acrylic acid. CoO and ZnO inhibited the catalytic performance of Mo-V-O. The different role of these metal oxides is explained in terms of their oxidation-reduction properties.

• Korean Journal of Weed Science
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• v.15 no.3
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• pp.197-205
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• 1995

The objectives of the present study were to find out 1)the differences in growth of radish under foggy and non-foggy condition, 2)the weed competition between radish and major upland weeds including Echinochloa crus-galli, 3)difference in response of radish to herbicide and weed, and finally 4)the fundamental data for the establishment of radish weed control system under locational foggy regions. The research was carried out by tray in greenhouse equipped with Auto Foggy System(SAE KI RIN Co.) and results were summarized as follows. 1. Plant height and shoot fresh weight of radish cultivars(long skirt, delicious altari, green mascot) were not different at the early growth(8 to 38 days after seeding), but increased at 55 days after seeding under foggy condition. Root fresh weight increased only in green mascot cultivar tinder foggy condition. Chlorophyll contents were higher in all the cultivars of radish under foggy condition. 2. Plant height and shoot fresh weight increased at 0 and 20 days of weed competition under foggy condition. Root fresh weight increased at 0, 20 and 35 days of competition under foggy condition. Above 50 days-competition, there was no difference between foggy and non-foggy condition. 3. Napropamide, alachlor and linuron did not show any differences in plant height and shoot fresh weight between foggy and non-foggy condition. Molinate reduced the root fresh weight at 65 days after seeding tinder foggy condition. 4. No difference in weeding efficacy by any herbicides tested was found tinder foggy condition. Weeding efficacy of Aeschynomene indica was reduced under foggy condition.

• Journal of Information Technology and Architecture
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• v.10 no.3
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• pp.335-346
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• 2013

With the overwhelming development of information technologies, the need for software development that can deal with diversified and complex business processes has increased dramatically. As a result, companies prefer softwares that can handle far more complex processing ability and also it should be stable as well as easier to maintain. These ambivalent requirements keep the software development organizations from assessing the quantitative abilities, so that under the support of the U.S. Department of Defense the Capability Maturity Model (CMM) and Capability Maturity Model Integration (CMMI) have been developed. The CMMI upper levels for the software development companies will be evaluated to be excellent and authenticated, which drives the companies to get and maintain high levels of maturity. In this paper, a case study for a domestic software company has been exploited how to achieve CMMI level 4 and what kind of factors have been played an effective role. These issues at the domestic and international software and maintenance program, can influence the trustworthiness and marketing effects for the global market. In this paper, the company's actual case study will give clues to find out the important factors for the development and maintenance of software companies maturity levels.

• Korean journal of applied entomology
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• v.17 no.1 s.34
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• pp.23-28
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• 1978

The study has been carried to confirm the pathotypes of Kresek inducing isolates of X. oryzae, and its reaction to the test plants when they were inoculated by the use of various methods. Induction of Kresek symptom by 23 isolates which randomly samplified from 123 Kresek areas through the country also were examined. The specificity of Pathotypes I, II, V in causing Kresek and the potenciality of infected rice straw is a first inoculum for Kresek epidemics in nature were tested. Fifteen out of 23 isolates from kresek area belonged to pathotype group I, while the rest of 8 isolates 5 howed group II reaction, and the most of isolates were originated from infected rice plant of Milyang #23. All of five pathotype groups were abled to produce 'Kresek' symptom although they showed some differences in each group of pathotype. The varieties Milyang #21, 22 and 23 were attacked by all isolates of group I, II and V while the Gogyoku group varieties including Yushin produced kresek symptom only by pathotype group II. Infected and dried straw maintained the pathogens during the winter period, and these straw acted as a first inoculum of Kresek disease when the straw were cutted and used as a manure just before transplanting of rice seedling.

• Korean Journal of Agricultural Science
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• v.2 no.1
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• pp.151-177
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• 1975

To obtain the informations on the checking factors of the effecient utilization of paddies in chungnam province and study on the effecient working system and high productive cropping system in paddies, the utilization state of paddies including environmental conditions were investigated at sample 1,500 farms. The results obtained are summarized as follows; 1. The difficulty of drainage in paddies was the most important factor checking the utility of paddies. Delayed transplanting of rice and lack of labour were also important checking factors on the efficient utilization of paddies. 2. The utilization of paddies was rather effecient at small size farms of which farmers were almost poor, and most of them cultivated barley for their own food. 3. Considering climatic conditions, pre-crops of rice must be harvested before June 10 tho and the marginal transplanting date of rice plant is June 25 th. 4. In case of planting barley as a post-crop after rice, the spread seeding by rotary before plowing was most efficient with lowest cost. 5. Considering rice cultivation, yield of barley and net income, the most efficient cropping system was "Josaengtongil + Olbori".

• Applied Biological Chemistry
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• v.11
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• pp.123-130
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• 1969

Five varieties of sweetpotatoes recommended in Korea were investigated with respect to the storing capacity, resin content and the possibility of developing sweetpotato chips as a new processed food item. The results are summarized as follows: 1) Two varieties, Suwon No. 147 and Chun-Mi were more resistant to chilling injury and soft-rot decay than other varieties. 2) The contents of resinous and polyphenolic substances were quite different depending upon the variety. 3) Sweetpotato chips of different color were made from different varieties and rapeseed oil was found to be the best as frying oil. 4) Best conditions to prepare sweetpotato chips with fresh color and proper texture were to dip slices of 1-2 mm thickness in 0.25% sodium bisulfite solution at $40^{\circ}C$ for 30-40 minutes and to subject to deep frying in an oil bath at $150-160^{\circ}C$ for 2.5 to 3.5 minutes. 5) Polyethylene-cellophane film as packing material of sweetpotato chips was the film in the moisture proof and film-impact tests.

• Elastomers and Composites
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• v.41 no.1
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• pp.27-39
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• 2006

In this study, modified DA-MMT filled NR/DA-MMT nanocomposites were manufactured by a latex method and a compounding method. Cure characteristics and mechanical properties of the Cloisite 15A, carbon black, Na-MMT filled NR compounds and the DA-MMT filled NR compound by a latex method were also evaluated. The filler content of all compounds was 10phr except the carbon black filled compound. Degree of intercalation and dispersion was characterized by X-ray diffraction (XRD) and transmission electron microscope (TEM). According to the XRD diffraction pattern and TEM analysis, extensive intercalation and homogeneous dispersion of the clay were obtained after the two-roll milling. Although the layer distance was increased, some parts of DA-MMT showed the layer distance of Na-MMT after vulcanization. DA-MMT filled NR compounds showed the highest ODR torques, tensile strength, modulus, and tear energy. The NR/DA-MMT nanocomposite (by a latex method) compared with a NR/DA-MMT nanocomposite (by a compounding method) was found that the improvement of the mechanical properties was mainly due to the degree of dispersion of the clay.