• Journal of the Korean Wood Science and Technology
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• v.21 no.4
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• pp.7-28
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• 1993

본 총설에서는 새로운 방부제와 방부처리 기술의 현재 발전 동향을 요약, 보고한다. 많은 새로운 방부제들이 약제의 독성 측면에서 환경적인 충격을 완화시킬 수 있는 잠재성을 가지고 있지만, 방부제로서 상업화되기 위해서는 이러한 약제들은 약제의 효능과 환경 안전성 간의 몇 가지 상호 조정 관계가 반드시 해결되어야 한다. Ammoniacal copper 계통의 방부제들이 지접부 사용에 적합한 새로운 수용성 방부제들의 주종을 이루고 있으며, 기존의 유용성 방부제들을 물에 용해한 emulsion 형태도 지접부 사용의 가능성을 보여 준다. 새로운 유용성 방부제 중에서 copper naphthenate, substituted isothiazolones, chlorothalonil, oxine copper가 지접부 사용을 위한 최상의 후보로 평가되고 있다. 유용성 방부제를 emulsion 형태로 사용하는 것은 유용성 방부제에 사용되는 석유 계통 용제의 소비를 감소시키기 때문에 중대한 의미를 가진다. 방부제들의 효능을 개선하고 강화시키기 위해 사용되는 첨가제들도 본 총설에서 거론된다. 재질개량을 위해 사용되는 비통상적인 방법(nonconventional system)들도 생물학적 열화 및 기상열화에 대한 저항성을 부여하여 목재의 사용수명을 증가시킨다. 전처리 공정에서 침상 자상처리(Needle incising)와 레이져 자상처리는 난주입 수종의 처리도를 개선시킬 수 있는 잠재성을 가지고 있다. 처리기술에 있어서 여러 가지 혁신적인 변화들은 기존의 처리 schedule을 조성함에 그 기본을 두고 있다. 난주입 수종의 처리도 개선은 pulsation법이나 고압 약제 분사법 (high energy liquid jets) 같은 고압을 적용하는 처리법에 의해서 달성된다. 미래의 처리공장들은 방부제를 기체상태로 또는 물질의 임계점 이상에서 방부제를 처리할 수도 있다. 이러한 새로운 접근은 외관이 깨끗하고, 처리도도 매우 양호한 처리재를 생산하는데 일조하리라 기대한다. 환경에 대한 대중적인 지대한 관심은 앞으로 목재 방부산업에 큰 영향을 미칠 것으로 보인다. 결과적으로 방부제의 처리목재내 가속 정착에 관한 연구에 상당한 노력이 투자될 것이다. 처리 후 가공에 관한 다른 주요한 연구는 방부제 처리 후 실시되는 재건조가 처리재의 역학적 성질에 미치는 영향에 대한 것이다.

• Journal of Bio-Environment Control
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• v.14 no.4
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• pp.275-279
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• 2005

The fruiting habit pattern of white-spine cucumber, whose fruits are usually borne on the lateral branches, is different from domestic ones. The cucumber production far export has been focused on how to promote lateral shooting and how to increase the number of lateral branches. As the growing season of the exporting cucumber is confined to winter season, low temperature and weak light are limiting factors to lateral shooting. This study was conducted to investigate the effect of foliar application of growth regulator for induction of lateral shoot in white-spine cucumber. foliar application of growth regulator were focused on concentration and application time based on number of leaves. The visible damages were observed in applied leaves by $30mg{\cdot}L^{-1}$ BA(benzyladenine) in retarding culture, but no significant by $10mg{\cdot}L^{-1}$ BA in case of semi-forcing culture. The number of available lateral shoots were greater in applied plant with $10mg{\cdot}L^{-1}$ BA than that of $30mg{\cdot}L^{-1}$ BA, in applied plants at 10th and 15th loaves than that of applied plants at 5th leaves.

• Korean Journal of Agricultural and Forest Meteorology
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• v.24 no.4
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• pp.267-274
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• 2022

The effect of year, varieties, nitrogen application, and transplant time were examined in relation to rice of protein. An experiment was conducted using 12 rice varieties to investigate the effect of management and weather conditions on brown rice protein of during the filling stage. The transplanting time was set to be three groups including early, medium, and late timing. The nitrogen application was set to be 0 N kg / 10a, 9N kg / 10a and 18 N kg / 10a to examine the effect of fertilizer management on protein content. Field experiments were conducted in three growing seasons including 2019, 2020, and 2021. The brown rice of protein content were 5.7%, 5.9%, and 6.6% under early, medium, and late transplanting time conditions, respectively. The protein content differ by variety. For example, Chucheong, Hopum, Ilpum, Mipum, Odae, Saenuri, and Saeilmi had more than 6.1%, and Chindeul, Shindongjin, Samkwang, Unkwang, Younhojinmi were less than 6.1%. Nitrogen content was 5.7% for 0kgN /10a, 6.1% for 9kgN /10a, and 6.8% for 18kgN /10a. The contribution of the characteristics to the protein content was highest in nitrogen content (38.8%), followed by transplanting time (13.7%), variety (8.2%), and year (3.5%). The average temperature for 20 days after heading time was the highest (9.3%), followed by sunshine duration (3.9%) and solar radiation (3.5%). Our results revealed that brown rice protein content was determined to be affected by changes in average temperature, sunshine duration and solar radiation for 20 days after heading time. This suggested that assessment of temperature and solar radiation after heading time would indicate the degree of rice quality in terms of protein.

• Journal of Environmental Policy
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• v.7 no.3
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• pp.63-88
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• 2008

In this treatise I have advanced a theory to regulate legal problems rationally arising from a right to a view and I have checked some precedents dealing with the temporary injunction, compensation for damage and the demolition of a house(mainly apartment) owing to an infringement of a right to a view. Relating to an infringement of a right to a view, there are more lawsuits which are instituted together with an infringement of a right to enjoy sunshine than lawsuits related only to the right to a view. In the cases of an infringement of a right to a view connects with educational or religious environment, the court made it a decision that the construction is prohibited from constructing more than a certain-story building to protect a right to a view. Plaintiffs won a case their suit in the original judgement regarding a claim for damages owing to an infringement of a right to a view, but the Supreme Court reversed the decision of a lower court. The right to a sky view should not be infringed in case of a dwelling house which is not built for the purpose of business or a view.

• The Journal of the Korea Contents Association
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• v.12 no.9
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• pp.280-292
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• 2012

In general, a venture capital invests in tech startups and helps them improve the corporate transparency through board of directors. With respect to venture capital investment and its impact on the corporate transparency of the newly public firms from 2004 to 2010 in Korea, we have made regression analysis. First, it was found that it was likely to be less transparent, the larger its asset size or the higher its debt ratio was. Second, lower level of ownership-control disparity resulted in higher transparency. Third, a shorter period to IPO and higher growth rate were more prominent in companies with lower degree of transparency. The above findings were not conclusive to prove whether or not venture capital directly increases the transparency level of its portfolio companies, but do insinuate the possibility of a negative impact on the transparency of its investee companies, as early IPO's were associated with less transparency. This is all the more persuasive as it was observed that companies with a lower level of transparency had generally raised more money from venture capitals, and that companies with a higher growth rate and/or higher PBR, have shown to be less transparent.

• Korean Journal of Remote Sensing
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• v.35 no.5_2
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• pp.841-850
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• 2019

The purpose of this study is to strengthen the capability of rapid mapping for disaster through improving the positioning accuracy of mapping and fusion of multi-sensing point cloud data derived from Unmanned Aerial Vehicles (UAVs) and disaster investigation vehicle. The positioning accuracy was evaluated for two procedures of drone mapping with Agisoft PhotoScan: 1) general geo-referencing by self-calibration, 2) proposed geo-referencing with optimized camera model by using fixed accurate Interior Orientation Parameters (IOPs) derived from indoor camera calibration test and bundle adjustment. The analysis result of positioning accuracy showed that positioning RMS error was improved 2~3 m to 0.11~0.28 m in horizontal and 2.85 m to 0.45 m in vertical accuracy, respectively. In addition, proposed data fusion approach of multi-sensing point cloud with the constraints of the height showed that the point matching error was greatly reduced under about 0.07 m. Accordingly, our proposed data fusion approach will enable us to generate effectively and timelinessly ortho-imagery and high-resolution three dimensional geographic data for national disaster management in the future.

• Journal of Practical Agriculture & Fisheries Research
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• v.25 no.4
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• pp.84-89
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• 2024

Light is an important component among which plays a crucial role in determining the production and quality of fruit trees. Since the disturbance of light directly leads to reduced photosynthetic efficiency, their damage can be increased especially in fruit trees such as Japanese apricots with a short growing time. In this study, we investigated how the effects of shading condition can affect the production and quality of Japanese apricots according to increased damages by light disturbance in the main orchard complex. The average photosynthetically active radiation (PAR) level in Japanese apricots was rapidly dropped as the shading time was increased compared to the control (304 μmol/m²/s) and the PAR level decreased to 142 μmol/m²/s after shaded for eight hours. The maximum photosynthetic efficiency, with a PAR value of 900 to 1,000 μmol/m²/s, corresponds to the time period without shading and the time period with 2 hours of shading, and these times range from 11 a.m. to 3 p.m. And the time period for shading for 4 hours was from 1:00 p.m. to 2:00 p.m., and under conditions of shading for 6 and 8 hours, the effect was a low amount of light. There was no difference in the weight of Japanese apricots during 2 hours shading time, however, it was significantly reduced as shading time were increased. The difference of the acid content and L/D ratio was not significant on shading time, but the SSC was decreased as times going on. In conclusion, our results indicate that the shading for more than 2 hours make negative effects to decrease the weight and SSC and the yield and affects directly to drop in fruit quality.