• Journal of Bio-Environment Control
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• v.25 no.4
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• pp.328-333
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• 2016

This study was conducted to determine the influences of winter and summer pruning on the yield and fruit quality in southern highbush blueberry (Vaccinium corymbosum L. hybrid) cv. 'Misty'. The 5-year-old southern highbush blueberry 'Misty' were used. The pruning treatments were as follows: 1) control (no pruning), 2) winter pruning (30% removed), and 3) winter pruning + summer pruning (Aug. 5). Fruits harvested for six times over the harvest season and measured yields, unmarketable fruit (defected and immature fruit), changes of each fruit weight and analyzed fruit characteristics, such as total sugar, total anthocyanin contents and total phenolic contents. The differential pruning treatments were not significant for fruit yields of southern highbush 'Misty'. No pruning treatment showed regular yields after the 2nd harvest, but the other pruning treatments were appeared that fruit yields were more concentrated on the 2nd~4th harvest time. Total sugar and total phenolic contents were observed the highest at the 4th time among the harvest period. No pruning treatment showed the highest unmarketable fruit yield at 57%, however, that of winter pruning and winter + summer pruning treatment occurred at 26%, 31%, respectively.

• Journal of Advanced Navigation Technology
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• v.16 no.2
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• pp.360-366
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• 2012

In the power distribution panel installed in airport or industrial facilities, MCCB has been used for main switch and ELCB for branch switch to perform human body and leakage-inducing fire protection as well as overcurrent and short circuit protection. Especially for the airport panel, increase in accident protection is needed for stable power supply due to rapid modernization with fast-growing users, higer capacity and diversification of equipment, the increase of power capacity and the breaker made slim is a main issue for now because the issue for installation space is standing out by making panel with two-row arrangement connection method, etc. due to a many use of branch ELCBs. In this thesis, we designed arc extinguishing mechanism, considered movement direction change of contact in mechanism design. Also, we designed the breaker to work stably in case of miniaturization of leakage detection circuit and reverse connection. We conducted short circuit test to verify its function and developed the breaker that can be improved protection against accidental current with slim size operating leakage function when reverse connection to help solve the problem in using space that is increasing in the airport distribution panel.

• Korean Journal of Medicinal Crop Science
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• v.5 no.1
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• pp.43-48
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• 1997

This study was conducted to improve germination ratio of Zanthoxylum piperitum A.P. DC. seeds. Stratification for 60 days after scarification of seed with sand was germination percentage to 5.4% and $GA_3$, 50ppm for 24 hrs after scarification of seed with sand showed 8.9%. Soaking the seeds in $GA_3$, 50ppm for 24 hrs after 40 to $70^{\circ}C$ hot water treatment for 10 minutes showed low germination of 4.4%. Based on $H_2SO_4$, NaOH and $HNO_3$, treatments, germination percentage did not improve at all regardless of soaking time. The highest germination of 91.1% was observed when seed was soaked in $GA_3$ 100ppm for 48 hrs after stratification for 60 days at $4^{\circ}C$. Kinetin treatment at 50ppm for 24 hrs had the greatest germination percentage of 31.7% but it did not improve germination ratio compared to $GA_3$ treatment.

• Journal of the Korean Geosynthetics Society
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• v.12 no.1
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• pp.39-50
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• 2013

This study aims at investigating the behavior of the ground water level when installing upward soil nails that drain water as well. To do this, a series of down-scaled model tests were conducted. A model slope with weathered soils was prepared and then an artificial rain was scattered on the slope. The relative densities of soil specimen were 60%, 75%, and 90%, and the rainfall intensities 50mm/hr, 75mm/hr, 100mm/hr, and 125mm/hr, respectively. The experimental parameters, such as the ground water level, ratio of soil runoff, and failure mode of the slope were measured and analyzed. As the results, It may be concluded that the ground water level in the slope supported by drainable upward soil nails increases very gradually while the unsupported soil changes dramatically. In addition, the ground water level becomes constant and no failure occurs as time goes by. In case of the relative density of 75%, the runoff ratio seemed to increase up to about 8~15% after reinforcement.

• Journal of the Korean Solar Energy Society
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• v.34 no.1
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• pp.72-80
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• 2014

This study proposed a wind power generation system utilizing outdoor air on the rooftop and indoor ventilation, which would increase according to the building height, as a way to help to save energy consumption in a building by using wind power energy of the new renewable energy sources. The study measured the distribution of air currents and power generation according to the usage factor of exhaust pipes in the kitchen and bathroom and identified the elements to consider when applying a wind power generation system to buildings in order to use outdoor air on the rooftop increasing according to the height and the indoor ventilation produced in the facility vertical shafts inside the buildings by installing a wind power generation system on the rooftop. (1) The study measured the ventilation velocity of the kitchen hood and bathroom ventilation fan by changing the zone areas by the households according to the usage factor of [${\alpha}$]=33~100%. As a result, the kitchen ventilation pipe generated the ventilation wind of 3.0m/s or more at the usage factor of [${\alpha}$] 66% or higher, and the bathroom ventilation pipe generated ventilation velocity lower than 3.0m/s, the blade velocity of the wind power generator, even after the usage factor rose to [${\alpha}$]=100%. (2) As the old bathroom ventilation pipe generated the ventilation velocity of 3.0m/s, the blade velocity of the wind power generator, even with the rising usage factor [${\alpha}$], the application of an outdoor air induction module increased the ventilation velocity by 2.9m/s at the usage factor of [${\alpha}$]=33%, 3.8m/s at the usage factor of [${\alpha}$]=66%, and 3.6m/s at the usage factor of [${\alpha}$]=100%. Thus the ventilation velocity of 3.0m/s, the blade velocity of the wind power generator, or higher was secured. (3) The findings prove that the applicability of a wind power generation system using outdoor air on the rooftop and indoor ventilation is excellent, which raises a need for various efforts to increase the possibility of its commercialization such as securing its structural stability according to momentary gusts on the rooftop and typhoons in summer and making the structure light to react to the wind directions of outdoor air on the rooftop according to the seasons.

• Food Science and Preservation
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• v.9 no.4
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• pp.357-361
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• 2002

This study was carried out to understand the problems, and find out the solution of post - Harvest related procedures for barley in Korea. Consecutive post - harvest procedures in harvesting, drying, milling, packaging and marketing methods were collaborately surveyed at Bujeok (Chungchongnamdo) and Kunsuh (Cholanamdo) agricultural cooperative federation where Chalssalbori (waxy barley) and Ssalbori (non waxy barley) were collectively cultivated in a group farming area, respectively. An early harvesting and relatively short harvesting period within 15 to 20 days to transplanting rice plants as a succeeding crop lead to produce undergrade barley and 2 to 3％ harvesting loss were considered as the problem that should be improved. In drying of barley, wide moisture content range of harvested barley among the different farmers and cultivation land was made difficult barley drying unifomly when they were dried in same dryer and drying temperature was slightely higher with 50 to 70$\^{C}$ than that of optimum temperature (under 50$\^{C}$) fer barley drying for producing the high quality barley. Dried barley packaged in ton-bag or 3P bag and put into the rectangular grain bin were stored in ambient temperature warehouse and milled for marketing through whole you. The physico-chemical properties and taste of stored barley were fairly maintained until May next year.

• Journal of Korean society of Dental Hygiene
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• v.13 no.5
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• pp.901-908
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• 2013

Objectives : The purpose of this study was to evaluate the bleaching effect of 3% hydrogen peroxide containing strip with primer in vivo. Methods : 22 female subjects aged from 20 to 39 years old were recruited after informed consent. They were divided into two groups with control and experimental group. Experimental group was bleached with 3% HP strip with primer, and control group received placebo for 14 days. Color changes were measured with Shade Eye-NCC (Shade Eye-NCC, SHOFU Co., Japan), Shade guide (VITA classical shade guide, $VIDENT^{TM}$, CA, USA) and digital camera image. All collected data were analyzed using SPSS 18.0. Results : At baseline, $L^*$ was $71.75{\pm}3.2$ and $b^*$ was $14.90{\pm}3.6$ in control, and $L^*$ was $71.3{\pm}3.4$ and $b^*$ was $15.61{\pm}3.7$ in experimental group. At day 14, $L^*$ was $71.35{\pm}3.2$ and $b^*$ was $13.97{\pm}4.3$ in control, and $L^*$ was $73.51{\pm}2.0$, $b^*$ was $9.10{\pm}3.0$ in experimental group. ${\Delta}E^*$ of all teeth were statistically significant between the two groups. Final ${\Delta}E^*$ was $7.15{\pm}2.09$ at experimental group and $2.78{\pm}2.93$ at control group, and the difference was significant (p<0.005). Color changes using shade guide also significantly decreased at 14th day compared with baseline at experimental group (p<0.005). Conclusions : 3% hydrogen peroxide strip with primer revealed effective enough to bleaching the human enamel during 14 days without any soft and hard tissue irritations.

• Applied Biological Chemistry
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• v.11
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• pp.77-82
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• 1969

In order to determine an optimum pressure condition of the storage chamber of apples, several reduced pressure were examined for the Jonathan. The results obtained checking various storage conditions are as follows. 1. The optimum pressure of chamber atmosphere for apple storage was 10 cmHg. 2. Under the pressure of 10 cmHg, the normal (room) temperature storage was better than the cold storage. 3. Under reduced pressure, poly-ethylene film wrapping of apple showed a good result in a short-term (less than one and half month) experiment. 4. No noticeable effect was observed by O.E.D (Oxy-ethylene doxanole) or sodium dehydro acetate treatment. 5. Change of the components (total sugar, reduced sugar, acid and vitamin C) of apples according to the storage methods showed similar results to our previous report, Studies on The Reduced Pressure Storage of Fruits (I)

• Journal of Physiology & Pathology in Korean Medicine
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• v.19 no.2
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• pp.544-548
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• 2005

I studied on the influence of BUDDEUMI(moxa and cupping a boil) in the live blood condition and the favorable turn up a subjective symptom of chronic irritable bowel syndrome patient. The results are as follows : After the perform of BUDDEUMI, in the Erythrocyte Aggregation, the efficiency is 87%(3persons decrease and 10 persons destroy/15 persons). In the Rouleau, the efficiency is 78%(2persons decrease and 5 persons destroy/9 persons). In the Target Cells, the efficiency is 90%(3persons decrease and 6 persons destroy/10 persons). In the Ovalocytes, the efficiency is 88%(3persons decrease and 4 persons destroy/8 persons). In the Poikilocytes, the efficiency is 76%(1persons decrease and 2 persons destroy/4 persons). After the perform of BUDDEUMI, in the Cholesterol Crystals, the efficiency is 82%(3persons decrease and 6 persons destroy/11 persons). In the Atherosclerotic Plaque, the efficiency is 80%(2persons decrease and 2 persons destroy/5 persons). In the Chylous, the efficiency is 86%(3persons decrease and 9 persons destroy/14 persons). On the favorable turn up a subjective symptom, the efficiency of symptom of appetite and digestion is 91%(5persons turn up exceedingly favorable, 9 persons turn up favorable, 7 persons turn up good, 2 persons turn up invalid / 23persons). In the efficiency of symptom of fatigue and feeble is 85%(3persons turn up exceedingly favorable, 6 persons turn up favorable, 8 persons turn up good, 3 persons turn up invalid / 20persons). And the efficiency of symptom of abdominal swelling and displeasure is 88%(2persons turn up exceedingly favorable, 10 persons turn up favorable, 8 persons turn up good, 3 persons turn up invalid / 24persons). In the efficiency of symptom of abdominal pain is 88%(4persons turn up exceedingly favorable, 10 persons turn up favorable, 8 persons turn up good, 3 persons turn up invalid / 25persons). The efficiency of symptom of constipation and diarrhoea is 90%(5persons turn up exceedingly favorable, 9 persons turn up favorable, 6 persons turn up good, 2 persons turn up invalid / 22persons).

• Journal of The Korean Society of Grassland and Forage Science
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• v.4 no.2
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• pp.147-151
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• 1983

In order to know the effect of planting date and cutting management on Jerusalem Artichoke (Helianthus truberosus L.) as a new forage or energy crop, JA tubes were planted from April 7 to June 27 with 20 day interval. Growth and yield could stay high as normal planting if tuber planting had been done until late May. The delayed planting after June caused deterioration of seed tuber, produced poor emergence and retarded growth. Previous harvested field did not need additional planting every spring because there were enough leftover tubers usually small size, less than 3gr., to provide a dense seedling establishment. This plot had too dense in population to adjust its spacing by thinning some of seedlings. One or two times cutting for forage or silage production reduced tuber yield very significantly. Therefore, it was not a good management to harvest for both forage and tuber production. Topping at 20cm from growing point in early July prevented from lodging and assured tuber yield.