• Asian-Australasian Journal of Animal Sciences
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• v.31 no.1
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• pp.86-90
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• 2018

Objective: This study was conducted to investigate the effects of dietary detoxified Rhus verniciflua sap (RVS) on production performance, egg quality, lipid fractions of egg yolk, liver and serum, and the profile of cecal microflora in laying hens. Methods: Two hundred 52-week-old Hy-Line Brown layers were randomly divided into 4 groups with 5 replicates per group (2 hens per cage, 5 cages per replicate) and were provided with one of 4 experimental diets containing 0%, 0.05%, 0.1%, or 0.2% RVS, for 6 weeks. Due to unequal intervals of RVS doses, the interactive matrix language procedure of the SAS program was used to correct the contrast coefficients of orthogonal polynomials. Results: There were no differences in feed intake and egg weight among the groups. Egg production increased (linearly and quadratically, p<0.05) with increasing levels of RVS. Eggshell thickness increased (linear, p<0.05) as the level of RVS in diets increased. The levels of blood cholesterol and activities of glutamic-oxaloacetic transaminase and glutamic-pyruvic transaminase were not altered by dietary treatments. Increasing level of RVS increased (linear, p<0.05) the populations of cecal lactic acid bacteria. The content of yolk cholesterol decreased (linear, p<0.05) with increasing levels of dietary RVS, although there were no significant differences in each lipid fraction of the liver. Conclusion: This study indicates that dietary RVS could improve laying performance and eggshell quality, and affect cecal lactic acid bacteria in a dose-dependent manner.

• Land and Housing Review
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• v.2 no.3
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• pp.277-285
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• 2011

To reinforce bearing capacity-changed section or different foundation in the same building, empirical or simple tools have been used. To solve this problem, an analytical solution which can evaluate and reinforce the stability of foundation is introduced. To suggest a clue for the problems, current foundation reinforcing method is studied through recent literature studies and the structural analyses of foundation slab are performed on the pile foundation of 49$m^2$, 59$m^2$ and 84$m^2$ I type apartments in 15 story building. The analyses are conducted with SAP 2000, a computer program for ordinary structural analysis. To predict the moments of slab by ground non-uniformity, the structural analysis results for the foundation slab of 3 types 15 story apartment buildings in 49$m^2$, 59$m^2$ and 84$m^2$ I type on non-uniformity ground are shown in the diagrams.

• Journal of the Korean Wood Science and Technology
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• v.28 no.4
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• pp.61-71
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• 2000

The effect of the treatment with CCFZ, FR-4, and PEG400 from butt end on the dimensional stability and bending properties was examined. Three softwood species such as red pine, Korean white pine and Japanese larch and three hardwood species such as poplar, alder and oak were investigated in this research. Shrinkage of red pine, Korean white pine, poplar, and alder treated with PEG400 decreased. However, there was no significant decrease of shrinkage in Japanese larch and oak. The decrease of shrinkage when moisture content changed from about 20% to 10% was larger than that at any other phase. In regard to the effect of treatment on bending properties, bending MOE and MOR of all specimens treated with PEG400 decreased significantly. Especially in the case of red pine, poplar, and alder treated with PEG400, bending MOR reduced 9%, 14%, and 12%, respectively. Reductions of MOR of the hardwood was also much larger than that of the softwood. However, in all species, treatment with CCFZ and FR-4 did not affect the change of bending MOE and MOR significantly. Comparing the large specimen which also included heartwood with the small specimen which included only treated sapwood, there was a difference in the change of bending MOE and MOR between them. The large specimens of Korean white pine, alder and Poplar, which had a relatively low proportion of sapwood(18~22%), showed the decrease of MOR by 11~13% more than that of small specimens, while red pine, Japanese larch and oak, which had a relatively high proportion of sapwood(35~40%), showed little decrease. It means that bending MOE and MOR of structural wood treated from butt end should be considered in terms of sapwood proportion as well as effect of treated chemicals.

• Journal of Korean Society of Forest Science
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• v.96 no.4
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• pp.432-437
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• 2007

The purpose of this study was to select regional distinctive Non-Timber Forest Products (NTFP) in Gangwon Inland Mountains Area. It was considered as NTFP Pine mushroom, Raw Oak Mushroom, Chestnut, Pinenut, Acorn, Resin, Cultivated Mountain Ginseng, Fernbrake, Chinese bellflower, Lance asiabell, Angelica, Aster scaber, Sap, Wood Vinegar. Regional weight, item weight and forest products quotient were used for the selection of NTFP. Forest products quotient was an application of Location Quotient that is used Input-Output analysis. As a result, Chestnut was selected in Chuncheon. Raw Oak Mushroom was selected in Wonju and Pyeongchang. It was selected Pinenut in Hongcheon, Lance asiabell in Hoengseong and Hwacheon, Acorn in Cheorwon, Aster scaber in Yanggu and Sap in Inje.

• The Journal of Natural Sciences
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• v.10 no.1
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• pp.23-26
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• 1998

The efficacy of various concentration of divalent copper and zinc ions was evaluated separately for the infectivity of tobacco mosaic virus. Infectivity of TMV was more enhanced by addition of zinc, while it was decreased by addition of copper. The number of local lesions were more produced on tobacco leaves inoculated with inoculum sap containing zinc than those inoculated with sap only. The effect of copper inhibited the infectivity of TMV is dependent on copper concentration. TMV particles treated with various concentration of zinc and copper, respectively, analyzed by electrophoresis, and appeared to be altered in electrophoretic behavior. When TMV was exposed to zinc concentration at more than 200mM, the viral particles were completely degraded, and at 40-20 mM they were barely detectable, but at 2 mM they were quite stable. When TMV was exposed at less than concentration of 20 mM of copper were degraded.

• Journal of Oriental Medical Thermology
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• v.8 no.1
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• pp.33-38
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• 2010

Purpose : Dam-eum and women about this disease is closely related to the fact that research is not developed encounter the report. The purpose of this disorder is associated with women with Dameum hew to evaluate the affects around Dongulbogam Search and compare some of the knowledge gained. are reported. Methods : Donguibogam focused on search and related papers were. Results : In Donguibogam Dam-eum(痰), Yoen(涎), Eum(飮) to distinguish, but the reason was that one, 痰飮 sap needed to nutritious the body, such as a material or normal for various reasons by the sap from the leaves to cause disease states may be the cause. Conclusion: Digestive, respiratory-related, but now the recognition of the Dameum changes in diet and lack of exercise, stress, lifestyle diseases due to climate change are increasing asa Dameum and women in the pathogenesis of disease high enough proportion of the treatment for Dameum Applications will be denied a lot of disease is considered.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.12 no.12
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• pp.970-978
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• 2002

The differential equations governing free vibrations of the elastic arches with unsymmetric axis are derived in Cartesian coordinates rather than in polar coordinates. in which the effect of rotatory inertia is included. Frequencies and mode shapes are computed numerically for parabolic arches with both clamped ends and both hinged ends. Comparisons of natural frequencies between this study and SAP 2000 are made to validate theories and numerical methods developed herein. The convergent efficiency is highly improved under the newly derived differential equations in Cartesian coordinates. The lowest four natural frequency parameters are reported, with and without the rotatory inertia, as functions of three non-dimensional system parameters the rise to chord length ratio. the span length to chord length ratio, and the slenderness ratio. Also typical mode shapes of vibrating arches are presented.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.4B
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• pp.360-367
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• 2009

In this paper, we propose a design methodology of IEEE 802.11n MAC which aims to achieve the higher throughput of more than 100Mbps in downlink as measured at the MAC-SAP and present the implementation results of MAC using the proposed design methodology. With our proposed methodology, different from the conventional design flow which has the separate codes for the protocol validation, for the network simulation, and for the system implementation, the unified code can be used for the network simulation and the implementation of software and hardware. Our MAC architecture is partitioned into two parts, Upper-layer MAC and Lower-layer MAC, in order to achieve the high efficiency for the new features of IEEE 802.11n standard. They are implemented in software and hardware respectively. The implemented MAC is tested on ARM based FPGA board.

• Journal of agriculture & life science
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• v.45 no.2
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• pp.51-59
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• 2011

This study was conducted to analysis the growth characteristics and the diameter at breast height (10 cm) reached ages in natural stand and platation for the optimal planting density and planting timing of Acer mono for. rubripes. There was high correlation between the DBH and crown diameter (E-W: r=0.82, S-N: r=0.76) in natural stand, and between the DBH and crown diameter (E-W: r=0.76, S-N: r=0.90) in plantation. In natural stand, average reached age on DBH 10 cm was $21.1{\pm}7.0$, and was $9.2{\pm}1.3$ in plantation. Therefore, the collectable timing of sap in artificial planting short approximately 2.3 times over the natural regeneration.

• Journal of the Korea Convergence Society
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• v.9 no.12
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• pp.137-143
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• 2018

The purpose of this study was to investigate the antifungal inhibition mechanism of fruit vinegar drinks against Candida albicans. To evaluate the effect of vinegar drinks on the growth and morphological changes of C. albicans, we performed real-time PCR and phase contrast microscopy. All the groups added vinegar drink showed the inhibitory effect of C. albicans on growth compared to the control. The expression of genes ALS3, ECE1, HWP1, and Sap5 were decreased by vinegar drink. As a result of phase contrast microscopy, the group to which vinegar drink was added showed significant quantitative decrease, morphological change and inhibition of C. albicans. This study can be provided as basic data for the development of antibiotics by verifying the antifungal activity of vinegar drinks.