http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Perspectives in TSPO PET Imaging for Neurologic Diseases
송요성 대한핵의학회 2019 핵의학 분자영상 Vol.53 No.6
The translocator protein (18 kDa) (TSPO) is a mitochondrial transmembrane protein, which has brought attention as a neuroinflammatory biomarker. Positron emission tomography (PET) imaging studies have been done for several decades, since neuroinflammation has been implicated as an important pathophysiology of several common neurologic disorders. However, despite numerous previous studies with positive findings, its clinical significance is not yet clear. Various attempts to overcome the limitations are ongoing, in order to bring acceptance for use in clinics.
송요성,이예진,현병근 한국토양비료학회 2022 한국토양비료학회지 Vol.55 No.4
Farmers who participate in the public benefit direct payment system must comply with the guide of standard fertilizer use. Despite of an extension (more than 100 ha) of Silkworm thorn (Cudrania tricuspidata) produc tion in Jeollanam-do province, the information on the standard fertilization is absent. Therefore, it is necessary to develop the standard fertilization guide for silkworm thorn, and to do this, we firstly investigated farmer’sfertilizer use, soil chemical properties and plant (leaves and fruit) nutrient contents from Silkworm thorn farm fields (n = 34) in 2021. The average fertilizer use was N-P2O5-K2O = 267-89-102 kg ha-1, and the nitrogen content of Silkworm thorn fruit occupied 7.5% of nitrogen fertilizer applied. As a result of correlation analysis, mineral nutrients of leaves and fruits were not dependent upon the amount of fertilization. By contrast, soil pH, EC, NO3-N, exchangeable K, organic matter were positively correlated with them. In particular, fruit nitrogen content greatly depended on soil organic matter. In conclusion, mineral uptake of silkworm thorn was greater affected by soil chemical parameters rather than the amount of fertilization, and thus, it is suggested to develop soil diagnosis-based fertilizer recommendation of silkworm thorn.
Effects of Composted Pig Manure on Rice Cultivation in Paddy Soils of Different Texture
송요성,곽한강,현병근,연병열,김필주,Song, Yo-Sung,Kwak, Han-Kang,Hyun, Byung-Keun,Yeon, Byeong-Yeol,Kim, Pil-Joo 한국토양비료학회 2001 한국토양비료학회지 Vol.34 No.4
토양비옥도와 토성이 서로 다른 논토양에서 수도 생산성과 환경을 고려한 가축분퇴비의 적정시용기준량을 확립하기 위하여 남계 사양토, 용지 양토, 화동 식양토에서 돈분퇴비를 0, 5, 10, 20 톤 $ha^{-1}$을 시용하고 추청벼를 공시 품종으로 하여 포장시험을 1년간 수행하여 다음과 같은 결과를 얻었다. 토양검정에 의한 화학비료 시용시 돈분퇴비 적정시용량은 사양토 4.0, 양토와 식양토 7.0 톤 $ha^{-1}$ 이었으며, 이때의 정조 수량은 사양토 7.440, 양토 7.000 식양토 6.020 톤 $ha^{-1}$이었다. 사양토와 양토에서 NPK와 함께 돈분퇴비를 15 톤 $ha^{-1}$ 이상 시용시에는 도복에 의한 수량 감소가 발생되었다. 수확기 식물체의 양분흡수량은 돈분 퇴비 시용량이 증가할수록 많아지는 경향이었으며, 시험 후 토양의 인산과 칼리의 함량은 돈분퇴비 시용량의 증가에 따라 높아지는 경향을 보였으며, 그 외의 성분은 처리구간 큰 차이가 없었다. A manure compost has been identified as an alternative to fertilizer to increase soil fertility and crop production in farming fields. The aim of the present study was to evaluate the effects of pig manure compost on soil properties and rice productivity as well as to determine the optimum application rate. In 1997, a field experiment was carried out to evaluate the growth of rice on sandy loam, loam, and clay loam soils amended with 0, 5, 10, and $20Mg\;ha^{-1}$ of pig manure compost plus NPK, which decided by soil testing. Rice yields were higher in soils receiving manure compost amendment. The maxim um yields were evaluated with $7,520kg\;ha^{-1}$ in the levels of $4.2Mg\;ha^{-1}$ of pig manure compost application plus NPK in sandy loam, $7,320kg\;ha^{-1}$ in the levels of $10.7Mg\;ha^{-1}$ in loam, and $6,320kg\;ha^{-1}$ in $17.2Mg\;ha^{-1}$ in clay loam soil. The optimum application rate of pig manure compost, which decided for 95% of maximum yields, was $4.0Mg\;ha^{-1}$ in sandy loam and $7.0Mg\;ha^{-1}$ in loam and clay loam soils under the condition of chemical fertilization by soil diagnosis. An increase in rice yield indicated a better nutrient status in compost-amended soil which was supported by the higher nutrient contents of N, P and K in shoot of plants grown in soil with manure compost amendment. Addition of manure compost increased available phosphate, silicate and exchangeable K in the amended soils according to the rate of compost application rate. It can be concluded that the manure compost could be a suitable organic fertilizer for improving rice productivity and soil fertility, and an application rate of $4.0Mg\;ha^{-1}$ in sandy loam and $7.0Mg\;ha^{-1}$ in loam and clay loam soils would give the optimum rice yields in the standard fertilization by chemical fertilization.
송요성,이예진,이찬욱,박혜진 한국토양비료학회 2023 한국토양비료학회지 Vol.56 No.4
The nutrition management manual for mulberry trees is designed for leaf production in Korea. For fruit production of mulberry, a separate manual is necessary because fruit yields are influenced by vegetative growth. In this study, we conducted a correlation analysis between soil chemical properties and the mineral content of both leaves and fruits of mulberry trees to identify factors for effective nutrition management in mulberry trees for fruit production. We surveyed 39 mulberry farms in Buan, Jeollabuk-do, where mulberry trees had been cultivated for over 10 years. Soil, leaves, and fruits of mulberry were sampled in mid-May. The average fertilization rates for mulberry were N-P2O5-K2O = 143-70-77 kg ha-1. The average of soil pH, organic matter, and available P2O5 was within the optimal range for orchard soils, but the exchangeable cations exceeded the recommended levels. Correlations were observed between NPK fertilization, soil organic matter, and the nitrogen content of leaves. The nitrogen content of leaves showed correlations with nitrogen, phosphorus, potassium, and magnesium content in the fruits. While fruit yields were not directly correlated with the nitrogen content of leaves, trees with a nitrogen content above 3.5% exhibited higher average yields and nitrogen content in their fruits compared to trees with less than 3.5% nitrogen content in leaves. Based on these results, the nitrogen content of leaves was useful for diagnosing the nitrogen status of mulberry trees. Further studies are required to explore the relation between nitrogen content in leaves, fruit quality concerning nitrogen fertilizer amounts, and soil organic matter.