• Journal of Life Science
• /
• v.22 no.7
• /
• pp.880-888
• /
• 2012

This study was carried out to investigate the effects of inuloprebiotics (INPs), an alternative antibacterial growth promotor, from Jerusalem artichoke extract (Helianthus tuberosus L.) on egg production and quality in Hyline brown laying hens. The hens were divided randomly into four treatment groups and housed in individual cages for 10 weeks: a control group (0 ppm INP) (T1), 450 ppm (T2), 600 ppm (T3), and 750 ppm (T4). Egg production, egg weight, Haugh unit, eggshell thickness, and breaking strength were significantly higher in all of the INP-treated groups compared with the control (p<0.05). Egg cholesterol was highest in the T1 group and decreased with INP addition from 15.04 to 17.98% (p<0.05). Compared with the T1 group, triglycerides in the blood and in total cholesterol decreased significantly in groups T2, T3, and T4 by 21.71-24.07% and 27.17-30.36%, respectively (p<0.05). The growth of cecum Bifidobacterium and Lactobacillus was stimulated in groups T2, T3, and T4 compared with T1, whereas the growth of Escherichia and Salmonella was clearly inhibited (p<0.05). The results suggest that the addition of 450 ppm INP to the diet of laying hens can improve egg production and egg quality.

• Korean journal of applied entomology
• /
• v.47 no.4
• /
• pp.407-411
• /
• 2008

This study was conducted to estimate the economic injury level (EIL) and economic threshold (ET) of the green peach aphid, Myzus persicae, on Chinese cabbage (Brassica campestris var). The changes of biomass of Chinese cabbage and M. persicae density were investigated after introduction of M. persicae at different density (0, 2, 5, 10, 15, and 20 per plant; inoculated at 10d after planting). The densities of M. persicae largely increased from the above initial densities to 0, 92.3, 177.4, 406.9, 440.4, and 471.3 aphids per plant at 18d after the initial inoculation, respectively. The biomass of Chinese cabbage significantly decreased with increasing the initial inoculated density of M. persicae: 602.0, 264.2, 262.0, 109.3, 151.0, and 67.3 g in above plots with different initial densities, respectively. The relationship between cumulative aphid days (CAD) and yield loss (%) of Chinese cabbage was well described by a nonlinear logistic equation. Using the estimated equation, EIL of M. persicae on Chinese cabbage was estimated 25 CAD per plant based on the yield loss 13%, which take into account of an empirical gain threshold 5% and marketable rate 92% of spring Chinese cabbage. Also, ET was calculated at 80% of EIL: 20 aphids per plant. Until a more elaborate EIL-model is developed, the present result may be useful for M. persicae management at early growth stage of Chinese cabbage.

• Therapeutic Science for Rehabilitation
• /
• v.2 no.2
• /
• pp.47-59
• /
• 2013

Objective : This study is conducted to find the influence on upper extremity function, cognitive function and activities of daily living when stroke patients receive task-oriented training in group or individually. Methods : Twenty-six inpatients are assigned to two groups(task training group and individual training group) randomly, who receive rehabilitation therapy after stroke diagnosis for 5 months(june to november, 2012) in a hospital. Both groups receive a task-oriented training for 30 minutes a day for 3 weeks. FMA were used to measure upper extremity function, K-MMSE were used to measure cognition, and MBI for ADL. Results : Before training. two groups were not different significantly in upper extremity function and cognitive function. But in activities of daily living, bathing self(p<.001), feeding, personal hygiene and total score(p<.05) are higher in group training group. After training, upper extremity function is higher in individual training group(p<.001). In both training group, upper extremity function, feeding, personal hygiene, bathing self, dressing, toilet, chair/bed transfers, ambulation and stair climbing, total score are improved significantly(p<.05). In comparing of variation before and after training, upper extremity function(p<.001), feeding and total score of activities of daily living are more improved significantly in individual training group(p<.05). Conclusion : The outcome shows that task-oriented training can improve upper extremity function and activities of daily living in both training group. Especially, the more upper extremity function is improved, the more activities of daily living is improved. In the future, it will be necessary longitudinal study for a long time for more patients.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.6
• /
• pp.61-69
• /
• 2016

Since 2000, the market of convenient stores in Korea has developed rapidly due to the explosive growth in single households but it still consists mainly of manual work due to the nature of the domestic industry. Hence the explosive increase in demand in the market is mostly due to workers. Therefore, the research aimed at encouraging efficiency via automation, which is carried out in manufacturing, such as electronic, cars and so on, is inadequate. This study performed a feasibility analysis of investment for introducing an automated system on brand A, which is domestic famous convenience store company. Productivity growth according to the introduction of an automated guided vehicle and the cost-benefits was studied with using a simulation for the picking process, which is most personnel and time consuming. As a result, the simulation showed that the equipment AGV introduced for choosing the process has the effects of cost saving and increased time efficiency for performing manual labor. Furthermore, appropriate numbers of AGV were forecasted considering the capacity of the distribution Center in the brand A convenient store, which has been growing steadily. There are increasing numbers of worker labor costs in the distribution industry these days. Before building a large new automate center, it is expected to provide a good information to investors who are considering increasing productivity through partial automation of each of unit process to achieve some cost reduction.

• Horticultural Science & Technology
• /
• v.29 no.4
• /
• pp.374-381
• /
• 2011

Stilbenes are polyphenolic natural products, which have antioxidative and antifungal activities. In some plants, including grapevine, the stilbene compounds, as resveratrol derivatives, exist in very diverse forms. Experiments to identify the individual stilbene compounds were carried out first to quantify them in UV-irradiated grapevine leaves. For this, stilbene glycosides were extracted from grapevine leaves which irradiated intensively with UV light. The glycoside samples were hydrolyzed by ${\beta}$-glucosidase, before analyzed by HPLC-mass spectrometer at each m/z corresponding to the mass of specific stilbenes. As results, in chromatograms, the enzymatic hydrolysis resulted in decrease and increase of the peaks expected for glycosides and aglycones, respectively. The samples were also exposed to sunlight in order to photo-isomerize the stilbene compounds. The light exposure resulted in disappearance and appearance of peaks expected for trans- and cis-isomers of stilbenes, respectively. Such a change of the peaks in chromatograms provided information needed for the inference to peak components. In this way, it was possible to identify 16 kinds of stilbene compounds from grapevine leaves. The identified stilbenes were quantified from grapevine leaves irradiated mildly by UV light. The UV-irradiation increased markedly in the content of stilbene compounds, especially trans-resveratrol by several hundredfold. In addition, piceatannol, which is a mere minor component of stilbenes in control leaves and a more active radical scavenger than resveratrol, was also increased by several tenfold by the treatment. The increase in stilbene contents as influenced by UV irradiation seems to be one of the stress coping responses of grapevine as a hormesis phenomenon.

• Journal of Bio-Environment Control
• /
• v.21 no.1
• /
• pp.33-38
• /
• 2012

Growth response of 'Sambokkul' watermelon grafted onto different rootstocks including 4 $Citrullus$ rootstocks and 3 other cucurbitaceous rootstocks was evaluated at two different temperature regimes. Significant reduction in plant growth rate was observed in plants grown at low temperatures (LT) as compared to those grown at normal or optimal temperatures. Relative growth reduction were 40~47% for vine length, 39~51% for total leaf area, 38~59% for shoot fresh weight, and 57~87% for plant dry weight, respectively. Watermelon rootstock PI 482322 showed comparable plant growth as the most popular rootstock 'Shintozwa' even at LT. 'Sambokkul' watermelon grafted onto watermelon hybrids, 'PI 271969 ${\times}$ PI 296341' and 'PI 271769 ${\times}$ Calhoun Gray', showed comparable plant growth as 'FR Dantos' bottle gourd rootstock. Index of growth ability at LT, which was calculated on the basis of reduced rate of vine length, dry weight and leaf area, was significantly high in $C.$ $martinezii$, 'Shintozwa', PI 482322, and 'PI 271769 ${\times}$ PI 296341' rootstocks (50% or higher) and low in own-rooted 'Sambokkul' or in watermelon plants on 'Knight' rootstock. Watermelon hybrids, 'PI 271969 ${\times}$ PI 296341' and 'PI 271769 ${\times}$ Calhoun Gray', showed better or at least comparable growth at low temperatures as compared to 'FR Dantos', confirming the feasibility of using watermelon rootstocks even in low temperature conditions.

• The Journal of Korean Physical Therapy
• /
• v.18 no.2
• /
• pp.59-65
• /
• 2006

Purpose: The purpose of this study to investigate the effect of TENS and electroacupuncture (EA) on injured muscle recovery and to compare the difference between TENS and EA. Methods: 18 S-D rats were produced surgically for crush injury on Extensor digitorum. TENS and EA stimulation were applied on acu-point that Zusanli (ST36) and Taijun (Liv3) of each hindlimb as approximitely 2Hz for 15 minutes. The rats were sacrificed on 1, 3, 7 post operation day, and the spinal level was immunohistochmical stainied. Results: The expression of NT-3 on the spinal level related with injured muscle between Ex-1 group and Ex-2, there is no significant difference. But between Con and Ex-1/Ex-2, there was little difference. In the same indivudual, we confirmed more NT-3 expression on the same side of injured muscle than on another side of gray matter in posterior horn. Conclusion: There is no difference, which is more effective to recover of injured muscle, between EA and TENS on injured muscle.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.24 no.4
• /
• pp.75-90
• /
• 2013

Given the context that users are actively using social media with multimedia embedded information, the purpose of this study is to demonstrate how images are used within Twitter messages, especially in influential and favorited messages. In order to achieve the purpose of this study, the top 200 influential and favorited messages with images were selected out of 1,589 tweets related to "Boston bombing" in April 2013. The characteristics of the message, image use, and user are analyzed and compared. Two phases of the analysis were conducted on three data sets containing the top 200 influential messages, top 200 favorited messages, and general messages. In the first phase, coding schemes have been developed for conducting three categorical analyses: (1) categorization of tweets, (2) categorization of image use, and (3) categorization of users. The three data sets were then coded using the coding schemes. In the second phase, comparison analyses were conducted among influential, favorited, and general tweets in terms of tweet type, image use, and user. While messages expressing opinion were found to be most favorited, the messages that shared information were recognized as most influential to users. On the other hand, as only four image uses - information dissemination, illustration, emotive/persuasive, and information processing - were found in this data set, the primary image use is likely to be data-driven rather than object-driven. From the perspective of users, the user types such as government, celebrity, and photo-sharing sites were found to be favorited and influential. An improved understanding of how users' image needs, in the context of social media, contribute to the body of knowledge of image needs. This study will also provide valuable insight into practical designs and implications of image retrieval systems or services.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.38 no.2
• /
• pp.131-135
• /
• 2009

This study was designed to investigate the antioxidant effect of Suaeda japonica grown in Suncheon Bay. S. japonica was extracted using different solvents and the extracts were examined for their antioxidative activities with various methods. When the total phenolic contents were determined, the contents in the ethyl acetate, butanol and methanol extracts were 21.33, 17.31, and 2.33 mg/g, respectively. Fractions of butanol extract recorded the highest values of DPPH radical scavenging activity, $\beta$-carotene bleaching assay, and FRAP assay. The DPPH radical scavenging activities of butanol, ethyl acetate, methanol and water fractions were 77.46, 74.43, 47.99, and 27.70%, respectively. The FRAP value of butanol extract was 2.42 mM. But, the fraction of ethyl acetate extract was recorded the highest TBARS value. These results suggest that S. japonica, the specialty of Suncheon, could be a potential source of natural antioxidants.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
• /
• v.19 no.2
• /
• pp.81-85
• /
• 2013

The stored-product insects have been a serious problem during the entire process of distribution on the food industry. Especially, the Indian meal moth (Plodia interpunctella) is one of stored-product insects which causes harm through penetrating into the food packaging. The objective of this study was to develop the anti-insect packaging material with fennel (Foeniculum vulgare) oil (FO). The FO has been selected for insecticidal substance against P. interpunctella, which was tested by fumigant toxicity assay. An anti-insect sachet was prepared by FO and filterpaper placed in a small paper bag. Repellent test was performed to evaluate the repellent activity of anti-insect sachet. In addition, the controlled release of FO from the anti-insect sachet was determined at $28^{\circ}C$ by gas chromatography (GC). It was demonstrated that FO was an effective substance against P. interpunctella. The mortality of FO was 56% at 800 mg/0.5 L in 120 h. In repellent test, the FO sachet showed effective repellency against P. interpunctella. The developed anti-insect sachet could be a promising source for insect repellent materials in food packaging.