• 한국자원식물학회지
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• 제32권6호
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• pp.730-734
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• 2019

Cryopreservation is one of the ideal and suitable methods for long-term storage of plant germplasm. The plant contaminated with diseases and pathogens are decreased the multiplication rate, survival rate and high quality of plants after cryopreservation. The aim of this work was to improve a micropropagation method for lily in Korea, which is indigenous plant. In the last process of rinsing scales after surface-sterilization, we tried to control the diseases and pathogens lived within the tissue by rinsing in 0.03% sodium hypochlorite (NaClO) instead of sterile distilled water. Bulb scales of Lilium were cultured in vitro on MS medium supplemented with Plant Preservative Mixture (PPM). The results showed that L. tsingtauense accessions were observed ranged from 53.9 to 100% with a mean value of 76.8% and L. hansonii accessions were checked from 84.5 to 85.5% with a mean of 85% survival rate. The newly small bulb formed from bulb-scales was transferred to MS medium. We checked the presence of microorganisms and survival rate after 3 weeks in culture after examination of bacterial incidences. The results indicated that the non-contamination rate were shown ranged from 75.0 to 94.1% with mean value of 83.2% in L. tsingtauense species, and that L. hansonii were observed 85.1 to 91.7% with mean value of 88.4%. This study will provide a valuable basis for establishment of effective axenic cultures for in vitro micropropagation of Korean native lily species.

• 한국융합학회논문지
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• 제6권1호
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• pp.29-34
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• 2015

점차 스마트그리드 기술이 발전됨에 따라서 에너지의 효율성에 이목이 집중되고 있다. 그래서 스마트그리드를 구성하고 있는 마이크로그리드 내의 에너지를 독립적으로 관리하기 위해서는 신재생에너지에 대한 연구를 필요로 한다. 그중에서도 소수력 에너지는 마이크로그리드내의 사용자가 사용하는 물의 양에 따라서 그 어디에도 설치 할 수 있는 장점을 가지고 있다. 사용자들이 주거하는 아파트, 공동주택에서 사용하고 있는 하수량을 기반으로 전기 발전량과 발전기의 가동률을 측정하여 측정값이 소수력 발전에 적합한지 알아본다. 적합한 아파트, 공동주택에서는 위치에너지를 활용하여 발생한 하수를 소수력 발전기로 전기를 생산 한다. 마이크로그리드의 에너지 관리 시스템과 전기 저장 장치를 도입하여 보다 효율적인 관리를 제안하고자 한다.

• 한국환경복원기술학회지
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• 제6권6호
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• pp.56-71
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• 2003

Waste landfills have been the center of environmental problems and they must be restored due to environmental pollution, disgusting landscape, and cost of management. It is suggested that they be recycled urban space as cities expand. Specially, nonsanitary waste landfills which have no pollution prevention facilities cause serious problems. Restoring the landfills as parks and golf courses, so on makes more benefits because of cheap use land, closeness to urban area, flat topography applicable to parks and golf courses, and high land values after restoration and the changes to local recreation sites. Restoration of waste landfills is a complex, costly, and interdisciplinary work. But, the waste landfill is a manmade ecosystem. Control, restoration and postmanagement of waste landfills are very important problems. The role of vegetation prevents soil erosion, reduces soil water storage, and obstructs leachate seepage. Early restoration makes derelict lands into man park artificially geared to soil, vegetation, landforms and hydrology. But, Ideal restoration is to make stable ecosystem nature-friendly and compatible with surrounding landscape without more management. Landscape is structured hierarchically with patches and stands as small components and forms forest as large components. Therefore, landscape formation of the waste landfills needs much restoration process. There are many ecological restoration techniques for the waste landfills. Those are divided into artificial and natural methods. The artificial method is anthropogenic plantings while the natural method is to trigger and use succession processes. The most important thing in the restoration of waste landfills is to consider the final restoration objectives of each waste landfill. According to these objectives, the depth of covering layer, planting degree, and structural design should be determined. The effective restoration methods should be selected of artificial and natural options.

• 한국축산식품학회지
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• 제36권4호
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• pp.523-530
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• 2016

This study investigates the effect of bovine heart surimi-like material (BHSM) used as a back fat replacer, on the physicochemical and sensory characteristics of frankfurter-type sausages. Frankfurter-type sausage with added BHSM had a higher moisture content and lower fat content than the control. In addition, the samples with added BHSM had higher pH, cooking loss and 2-thiobarbituric acid-reactive substance (TBARS) value and lower water exudation than the control. The sausage formulation with 40% BHSM was more effective in delaying lipid oxidation without affecting cooking loss compared to the 60% BHSM treatment sample. Results showed that hardness values increased upon replacement with BHSM, and sausages manufactured with 40% BHSM had higher lightness and lower redness values. Panelists found there were no differences in color, odor, and tenderness scores and the overall acceptability score found that treatment samples containing 20% and 40% BHSM were preferable to the control after storage for 14 d. These results indicate that fat replacement with BHSM was beneficial to the quality of frankfurter-type sausages, and acceptable reduced-fat products can be produced when back fat is replaced with up to 40% BHSM.

• 한국작물학회지
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• 제4권1호
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• pp.125-129
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• 1968

수확후 시일이 오래 경과되지 않은 금잔디종자의 발아촉진에 관하여 실험한 결과를 요약하면 다음과 같다. (1) 종자를 흡수시켜서 0~$2^{\circ}C$에 2~30일 냉장하는 것은 발아조장효과가 가장 현저하였다. (2) 종자를 농유산에 넣고 유리막대로 잘 교반하며 1분 30쯤 경과한 다음 수세 파종하는것도 발아조장의 효과가 컸다. 그러나 처리가 지나쳐서 종자가 흑별할 저오닥 되면 도리어 해롭다. (3) 잔디종자의 발아는 광선이 투입될 경우에 조장되며 복토는 발아를 감퇴시킨다. (4) 혼사종피마상 및 선부절제도 약간의 발아조장효과가 있는 것 같다. (5) 지벨레린, $NH_4$ $NO_3$, NAA 등의 처리는 발아조장효과가 거의 인정되지 않았다.

• 한국환경복원기술학회지
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• 제16권1호
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• pp.245-257
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• 2013

Lately, besides promoting the biodiversity of the natural ecosystems, there is a demand for climate change mitigation features that will reduce greenhouse gases and prevent disasters that will bring damages such as torrential rains. However, there was not a lot of discussion on the soils that are key in these features. Therefore, this paper proposes a network (Gold Network) as an alternative that will solve the problem that was filed earlier by figuring out how to compose the soil environment. First, in order to maximize the ecological status and value of the soil, a soil network can be proposed through the vertical and horizontal connections of the fragmented soil. Second, there is a need to understand and research the organic system of the ecosystems as well as the complex perspective of the ecosystem services, not only the fragmentary perspectives of the soil remediation, planting improvements or the other existing elements. Third, there is a need to apply the integrated perspective of the Landscape Ecology, Ecological Engineering and Restoration Ecology for the connectivity of the soil (network) due to it being in the execution of the soil network. If a soil network was to be built, a fundamental ecological network would be realized to not only promote biodiversity but also to prepare effective adaptation to climate change.

• Asian-Australasian Journal of Animal Sciences
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• 제26권12호
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• pp.1753-1761
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• 2013

The individual and interactive effects of Schisandra chinensis powder (SCP) and sodium nitrite additions on color, pH, water holding capacity, residual nitrite, 2-thiobarbituric acid reactive substances (TBARS), volatile basic nitrogen, texture properties, fatty acids, amino acids and sensory evaluation of cooked pork sausages were investigated after 20 d of storage at $4^{\circ}C$. The powders (0, 0.5 and 1.0%) were added to sausages either alone or in combination with nitrite (0 and 100 ppm). SCP added-sausages showed lower $L^*$ (lightness) and W (whiteness) values, and higher $b^*$ (yellowness) values than sausage containing no nitrite, and exhibited the highest $a^*$ values at a 0.5% addition (p<0.05). Residual nitrite and TBARS values were found to be significantly reduced as the addition levels of SCP increased (p<0.05). As the addition of SCP increased, the sausage showed gradually decreased brittleness, cohesiveness, springiness, gumminess and chewiness, while adhesiveness increased. Polyunsaturated fatty acid, n-6 and n-6/n-3 fatty acid ratio concentrations were significantly higher in sausages containing SCP (p<0.05). The addition of SCP to sausage significantly (p<0.05) increased the ammonia content (by 0.5% SCP) and aromatic amino acid concentrations (by 1.0% SCP) (p<0.05). Inclusion of SCP in sausage meat resulted in a significant deterioration in quality characteristics of flavor, springiness, juiciness and overall acceptability (p<0.05). As expected, the observed changes in $a^*$, W, pH, shear force, texture property, TBARS, fatty acid, amino acid and sensory score of sausages, depended on the rate of addition of nitrite (p<0.05). These results suggest that SCP addition is not an effective way of improving the sensory evaluation of sausages, but may beneficially affect TBARS, nitrite scavenging activity, fatty acid and amino acid content in pork sausages.

• Nuclear Engineering and Technology
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• 제6권2호
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• pp.97-111
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• 1974

천연 점토 광물질의 ion교환능은 비교적 낮지만, 여러가지 황성화법에 의하여 교환능의 개설이 기대된다. 본 연구에 있어서는 점토 광물질 중에서도 교환 흡착능이 비교적 큰 vermiculite를 사용하여 저준위 방사성 액체 폐기물을 처리하는데 있어서 효과적인 이용 방법을 검토하기 위하여 vermiculite의 이온교환 기능에 관한 기초 연구를 실험하였다. Cs 이온의 교환능 및 분배계수는 Cs-l37의 방사능도를 Scintillation counter로 측정하였고, 천연 및 활성화된 vermiculite에 대한 특성은 X-ray회절과 전자회절에 의한 분석 및 열시차 분석과 아울러 전자 현미경에 의한 검사에 의거 해석하였다. Na-vermiculite에 의한 Cs이온의 교환 및 흡착에 있어서는 결정격자의 C-axis spacing의 수축을 초래하게 되고, Cs이온의 교환능은 주로 C-axis spacing의 크기에 좌우된다고 본다. Na-vermiculite에 의한 Cs이온의 교환 및 흡착 연구를 수행함으로서 저준위 방사성 핵종의 처리 분만 아니라, 고 방사성 폐액 저장 tank의 외각 충진 물질로서 Cs-137과 같이 반감기가 긴 핵종의 leakage로 인한 지하수 오염을 방지할 수 있는 재질로서도 적합하다.

• 한국약용작물학회지
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• 제6권3호
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• pp.216-220
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• 1998

시호 입모향상에 대한 기초자료를 얻고자 휴면을 타파하고 발아를 촉진시키는 것으로 알려 진 종자처리방법으로 종피파상, 황산침지, 저온처리, 수세처리, 노천매장 등의 처리를 공시하여 실내 검정에 의한 발아향상효과와 포장에서의 입모, 생육 및 수량에 미치는 영향을 구명하고자 시험을 실시한 결과는 아래와 같았다. 1. 실내상토시험 결과 발아율이 무처리 50%에 비하여 수세처리 62%. 노천매장 77%로 향상되었다. 이 효과는 수세처리에 의한 발아억제물질 용탈과 노천매장 처리에 의한 발아억제물질 용탈 및 미숙 배의 생장이 발아향상의 주원인으로 추정 된다. 2. 볏짚 피복 포장에서 입모율은 무처리 83%에 비하여 수세처리 87%, 노천매장 90%로 향상되었고 출아일수도 무처리 47일보다 수세처리 21일, 노천매장 31일 각각 단축되었다. 3. ha당 건근수량은 무처리 423kg 비하여 입모율이 높아 수확주수가 많고 출아가 빨라 생육기간이 길어 식물체당 생근중이 무거웠던 수세처리와 노천매장처리가 각각 22%, 29% 증수되었다.

• 한국약용작물학회지
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• 제25권4호
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• pp.209-216
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• 2017

Background: Dehisced ginseng seeds need to be stored at cold temperatures for around 3 months to break their physiological dormancy, and thus, to aid in gemination. In the presence of high moisture in such an environment, seed spoilage and pre-germination may lower seed quality and productivity. To improve seed quality during cold-stratification, the effects of seed dehydration and temperature were tested. Methods and Results: In early December, dehisced ginseng seeds were dehydrated at 4 different levels and stored at $2^{\circ}C$ $-2^{\circ}C$, and $-20^{\circ}C$ for 3 months. Germination was carried out on the filter papers moistened with distilled water; emergence of root, shoot, and seed spoilage were assessed. Seed viability was examined by the tetrazolium test. More than 90% of the seeds stored at $2^{\circ}C$ and $-2^{\circ}C$ without drying or endocarp dehydration germinated, but seeds that were dehydrated to have a moisture content (MC) below 31% showed poor germination and lost their viability. In addition, the seeds stored at $-20^{\circ}C$ failed to show effective germination. Conclusions: Seed storage after endocarp dehydration might help to improve seed quality and increase seedling's ability to stand during the spring-sowing of ginseng.