• FLOWER RESEARCH JOURNAL
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• v.16 no.3
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• pp.174-178
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• 2008

This study was carried out to investigate the effect $GA_3$, moist chilling storage and priming treatments on seed germination of Caltha palustris var. membranacea. Percent germination was greatly improved by $GA_3$ treatment. However, no significant differences were observed among concentrations and soaking periods of $GA_3$. Optimum $GA_3$ treatment was one hour presoaking in a 100mg${\cdot}L^{-1}$ solution. Germination enhancing effect of moist chilling stroage was significantly greater than that of $GA_3$. Chilling treatment for five weeks resulted in the greatest percent germination of 60.3%. Unlike the role of $GA_3$ and moist chilling storage, no appreciable effect on seed germination was observed by the priming the seeds with either a $Ca(NO_3)_2 $ or $KNO_3$ solution.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.9
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• pp.1301-1304
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• 2012

Mineral contents of various salts were determined by the ICP-OES method. Bamboo salt (baked 9 times) contained more potassium, calcium, magnesium, and manganese, compared to purified and solar salts. Bamboo salt had a pH of 11.04, higher than those of purified (6.29) and solar (9.13) salts. Contents of [$OH^-$] were measured by using the FT-IR spectra. Bamboo salt exhibited higher reduction potential and contained more OH groups than purified and solar salts. The reduction peak of bamboo salt was observed to be about three times broader than that of solar salt in terms of redox potential amperometry. At a salt concentration of 25%, bamboo salt showed higher radical scavenging activities (81.4%) than solar (5.0%) and purified (2.0%) salts, as evaluated by DPPH assay. Bamboo salt revealed alkaline property, more OH groups and antioxidative activity.

• Food Science and Preservation
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• v.13 no.3
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• pp.322-328
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• 2006

This study was designed to investigate the Quality of salted eggplants with mixed rice bran and salt during 7 days at $4^{\circ}\C$ for the quality improvement and arrangement of eggplants exported to Japan. It was carried out to analyze the changes of the color, organic acids, amino acids and minerals during salting. L and b values of eggplants were decreased, and a value of eggplants was increased during salting. Organic acids such as acetic, citric, lactic, malic, and succinic acids were analyzed from eggplants. The content of acetic and malic acid were decreased during salting, but citric and succinic acid contents were increased The major amino acids were alanine, glycine, valine and leucine. Total amino acid content of Chukyang was decreased but that of Shikibu was not changed during salting. The major free amino acid was $\gamma$-aminobutyric acid and contents of $\alpha$-aminoadipic acid and $\gamma$-aminobutyric acid were increased during salting. Sodium and potassium were major minerals of eggplants. Sodium, potassium and magnesium were increased during salting.

• Journal of Aquaculture
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• v.16 no.1
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• pp.15-23
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• 2003

We have investigated water quality of the coastal saline groundwaters utilized for fish farms in Jeju Island. The water quality investigation included the spatial observations for 75 fish farms during March-May, 1994 and the hi-monthly observations for both coastal saline groundwaters and seawaters at four fish farms from August 1994 to December 1995. Water temperature of the saline groundwaters ranged from 16 to 18$^{\circ}C$ over the study period. Salinity of the saline groundwaters varied between 20.60 ppt and 34.02 ppt, slightly lower than that of the coastal seawaters(26.47~34.53 ppt). This salinity variation must be associated with local precipitation conditions in Jeju Island. The oxygen saturation for most saline groundwater samples was lower than 80%, ranging from 24.7 to 89.8%. The COD and pH values for the saline groundwaters were similar to those for the coastal seawaters. The concentrations of DIP for the saline groundwaters varied between 0.021 mg/L and 0.121 mg/ L, and seasonal variation of DIP in the saline groundwater ranged from 0.014 to 0.077 mg/L, which were higher than that of the coastal seawaters(0.000~0.015 mg/L). Nitrate in the saline groundwaters accounted for more than 90% of the DIM. The maximum concentrations of ammonia, nitrite, nitrate and DIN in the saline groundwaters were 0.085, 0.012, 2.294 and 2.309 mg/L, respectively. These concentrations of the saline groundwaters were considerably lower than those affected culture organisms. Overall, the saline groundwaters utilized for fish farms in Jeju Island appear to maintain good waterquality for fish farms.

• Proceedings of the Korean Vacuum Society Conference
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• 2012.02a
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• pp.167-167
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• 2012

최근 들어 유연한 폴리머 기판을 이용한 차세대 Flexible display는 다양한 장점으로 인해 많은 연구가들에 의해 유망한 차세대 디스플레이로 주목받고 있다. 일반적 폴리머 기판은 산소, 수분 등에 취약하기 때문에 무기막 또는 멀티레이어를 증착한다. 본 연구는 remote-type과 direct-type DBD로 구성되어 있는 double discharge system을 이용한 SiOx 무기막 증착 실험에 관한 연구이다. 본 연구에서는 HMDS/$O_2$/He/Ar gas mixture를 통해 발생된 대기압 플라즈마를 이용하여 공정을 진행하였다. SiOx를 증착할 때 SiOx 무기막 증착 실험은 $O_2$의 유량이 감소할수록 그리고 HMDS의 유량이 증가함에 따라 deposition rate, 즉 공정효율이 증가하는 것을 알 수 있었다. 하지만 HMDS의 유량이 증가하고 $O_2$ gas 유량이 감소함에 따라 carbon과 hydrogen 등의 불순물의 함유도 함께 증가하게 되고 이로 인해 무기막의 특성이 약해지고, 유기적인 막 특성이 강해지게 된다. Double discharge system을 사용하였을 경우에는 remote-type DBD system을 사용하였을 때 보다 더 높은 공정 효율을 관찰할 수 있었고 동시에 더 낮은 불순물 함량을 가지는 것을 알 수 있었다. 이는 기판에 추가적으로 인가되는 power에 따라 discharge efficiency가 향상되어 Si-O bond 결합을 유도, 무기막적 특성이 강해지고, 또한 기판 바이어스 효과에 따라 증착무기막의 기계적인 강도 역시 향상됨을 관찰할 수 있었다.

• Korean Journal of Microbiology
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• v.23 no.2
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• pp.84-89
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• 1985

The effect of exogenous phosphate supply on the regulation of phosphate metabolism was investegated during catabolic repression and catabolic derepression in yeast (Saccharomyces uvarum). As the results, when sugar was supplimented in cells cultivated under phosphate free, the growith rate was low but it was capable of cell division. Polyphosphate "B" was accumulated highly in proportion to amount of phosphate added to the medium. Without regard to phosphate supply of the medium, the total amount of polyphospgate was almost similar, although each polyphosphate was turned over. Activities of all phosphatases remained continuousoy high in the cells cultivated in the phosphate free medium. Especially under catabolic repression, the function of polyphosphate system was shown to compensate the ATP/ADP system as phosphate donor, energy source and regulator.

• Journal of the Korean Society for Marine Environment & Energy
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• v.16 no.1
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• pp.25-35
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• 2013

Dominance and survival strategy of toxic dinoflagellate Alexandrium tamarense and A. catenella under the dissolved inorganic nitrogen (DIN) limited conditions were examined in the laboratory and field observations. In Masan Bay, DIN was limiting factor for growth of phytoplankton during spring to early summer when Alexandrium spp. have been observed. They have a disadvantageous position compared with diatoms because Ks of nitrate calculated from growth kinetics experiment of A. tamarense and A. catenella was higher than diatoms. However, A. tamarense and A. catenella were able to grow using dissolved organic nitrogen (DON) compounds such as urea and amino acids as well as DIN. Therefore, DON utilization of A. tamarense, A. catenella might contribute to not only their population growth but also dominance and interspecific competition in the DIN-limited conditions in Masan Bay.

• Clinical and Experimental Pediatrics
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• v.52 no.7
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• pp.832-836
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• 2009

Plastic bronchitis is a rare disorder characterized by the formation of extensive, obstructing endobronchial casts. It is associated with asthma and complex cardiac defects such as those requiring the Fontan procedure. The treatment of plastic bronchitis comprises conventional therapy involving spontaneous expectoration and bronchoscopic removal and specific therapy with several new drugs. Herein, we describe the cases of 2 patients diagnosed with plastic bronchitis accompanied with a different underlying disease, which were treated with inhaled corticosteroid and low-dose oral clarithromycin.

• Journal of the Korean Society for Marine Environment & Energy
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• v.13 no.4
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• pp.279-287
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• 2010

To identify characteristics of the water quality at Goseong bay, we analyzed long term monitoring data collected at surface and bottom water which was accumulated during the period of 1987~2009. The result showed that the waters of Goseong bay represented mesotrophic level that is based on chlorophyll-a, DIP and DIN and seasonal average of COD that indicates level by the COD criteria. This analysis can be translated that the waters is comparatively clean even though the waters is in the closed bay that slowly diffuses influx mass. We also did the time series analysis, correlation analysis and regression analysis on the moving average of the water parameter at Goseong bay. According to the results, DIP showed a increasing trend as time passed while DIN was on a decreasing trend under the same condition. In the waters of Goseong bay, the phyto-plankton growth was shown to be limited by DIN concentration. The chlrophyll-a was at the peak in August, at $4.60{\mu}g/L$. As the seasonal average and index were the highest in November, it was understood that the balance of nutrient at Goseong bay was dependent more on inner factors, ie, mass farming of aquatic species and release of bottom sediment rather than on inflow of fresh water. Accordingly, it is needed to consider the balance of nutrient like DIP and DIN to manage the water quality or estuaries at Goseong bay.

• Journal of the Korean Society of Marine Environment & Safety
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• v.22 no.1
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• pp.42-51
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• 2016

We investigated the distribution of dissolved nutrients, phytoplankton community structure and utilization of nitrogen compounds by dominant species in the southwestern part of East Sea in September, 2014. Dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP) were lower in the surface layer, and concentrations were increased with depth. Dissolved organic nitrogen (DON) and dissolved organic phosphorus were the opposite of dissolved inorganic nutrients. Although DIN DIP ratio in all of the water masses was higher than Redfield ratio (16), DIN : DIP ratio in mixed layer was about 2, indicating that inorganic nitrogen is the limiting factor for the growth of phytoplankton. In particular, DON proportion in dissolved total nitrogen was about 88 % in the mixed layer where inorganic nitrogen is limiting factor. The dominant species Chaeotceros debilis and Prorocentrum minimum were able to grow using DIN as well as DON such as urea and amino acids. Therefore, DON utilization of phytoplankton may play a role as a survival strategy in the DIN-limited conditions of East Sea.