선천성 갑상선종성 기능저하증

신재훈 한국의학사 1989 診斷과治療 Vol.9 No.8

Estimation of N Mineralization Potential and N Mineralization Rate of Organic Amendments in Upland Soil

신재훈,이상민,이변우 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.6

Management of renewable organic resources is important in attaining the sustainability of agricultural production. However, nutrient management with organic resources is more complex than fertilization with chemical fertilizer because the composition of the organic input or the environmental condition will influence organic matter decomposition and nutrient release. One of the most effective methods for estimating nutrient release from organic amendment is the use of N mineralization models. The present study aimed at parameterizing N mineralization models for a number of organic amendments being used as a nutrient source for crop production. Laboratory incubation experiment was conducted in aerobic condition. N mineralization was investigated for nineteen organic amendments in sandy soil and clay soil at 20°C, 25°C, and 30°C. N mineralization was facilitated at higher temperature condition. Negative correlation was observed between mineralized N and C:N ratio of organic amendments. N mineralization process was slower in clay soil than in sandy soil and this was mainly due to the delayed nitrification. The single and the double exponential models were used to estimate N mineralization of the organic amendments. N mineralization potential Np and mineralization rate k were estimated in different temperature and soil conditions. Estimated Np ranged from 28.8 to 228.1 and k from 0.0066 to 0.6932. The double exponential model showed better prediction of N mineralization compared with the single exponential model, particularly for organic amendments with high C:N ratio. It is expected that the model parameters estimated based on the incubation experiment could be used to design nutrient management planning in environment-friendly agriculture.

유기농업에서 혼작재배가 양배추의 수량, 배추좀나방 밀도 및 잡초발생에 미치는 영향

신재훈,이병모,박종호,최두회,김한명,박동하,이태근 한국작물학회 2005 한국작물학회 학술발표대회 논문집 Vol.2005 No.-

Estimation of N Mineralization Potential and N Mineralization Rate of Organic Amendments as Affected by C:N Ratio and Temperature in Paddy Soil

신재훈,안난희,이상민,옥정훈,이변우 한국토양비료학회 2016 한국토양비료학회지 Vol.49 No.6

Understanding N mineralization dynamics in soil is essential for efficient nutrient management. An anaerobic incubation experiment was conducted to examine N mineralization potential and N mineralization rate of the organic amendments with different C:N ratio in paddy soil. Inorganic N in the soil sample was measured periodically under three temperature conditions (20°C, 25°C, 30°C) for 90 days. N mineralization was accelerated as the temperature rises by approximately 10% °C-1 in average. Negative correlation (R2 = 0.707) was observed between soil inorganic N and C:N ratio, while total organic carbon extract (R2 = 0.947) and microbial biomass C (R2 = 0.824) in the soil were positively related to C:N ratio. Single exponential model was applied for quantitative evaluation of N mineralization process. Model parameter for N mineralization rate, k, increased in proportion to temperature. N mineralization potential, Np, was very different depending on C:N ratio of organic input. Np value decreased as C:N ratio increased, ranged from 74.3 mg kg-1 in a low C:N ratio (12.0 in hairy vetch) to 15.1 mg kg-1 in a high C:N ratio (78.2 in rice straw). This result indicated that the amount of inorganic N available for crop uptake can be predicted by temperature and C:N ratio of organic amendment. Consequently, it is suggested that the amount of organic fertilizer application in paddy soil would be determined based on temperature observations and C:N ratio, which represent the decomposition characteristics of organic amendments.

ORYZA2000을 이용한 유기 벼 재배 시스템의 질소 동태 및 벼 생육 모의

신재훈,이상민,옥정훈,남홍식,조정래,안난희,김광수,Shin, Jae-Hoon,Lee, Sang-Min,Ok, Jung-Hun,Nam, Hong-Sik,Cho, Jung-Lai,An, Nan-Hee,Kim, Kwang-Su 한국유기농업학회 2017 한국유기농업학회지 Vol.25 No.4

The study was carried out to develop a mathematical model for evaluating the effect of organic fertilizers in organic rice production systems. A function to simulate the nitrogen mineralization process in the paddy soil has been developed and integrated into ORYZA2000 crop growth model. Inorganic nitrogen in the soil was estimated by single exponential models, given temperature and C:N ratio of organic amendments. Data collected from the two-year field experiment were used to evaluate the performance of the model. The revised version of ORYZA2000 provided reasonable estimates of key variables for nitrogen dynamics and crop growth in the organic rice production systems. Coefficient of determination between the measured value and simulated value were 0.6613, 0.8938, and 0.8092, respectively for soil inorganic nitrogen, total dry matter production, and rice yield. This means that the model could be used to quantify nitrogen supplying capacity of organic fertilizers relative to chemical fertilizer. Nitrogen dynamics and rice growth simulated by the model would be useful information to make decision for organic fertilization in organic rice production systems.

1920 년대 민요시론의 전개양상과 성격

신재훈 반교어문학회 1991 반교어문연구 Vol.3 No.-

N/A

조선 전기 遷陵의 과정과 정치적 성격

신재훈 조선시대사학회 2011 朝鮮時代史學報 Vol.58 No.-

'Moving The Royal Tombs' Ceremony(遷陵) was noted by reason of a special ritual only in the Joseon Dynasty. And the former studies that indicated its Feng Shui's controversies would seem to be dissimilar to Confucianism as a national policy of the Joseon dynasty. Moreover, its inevitable mobilization of materials and manpower was speculated to be closely connected with the close political conditions. To establish it, this article concretely examine the procedure and scale of the 'Moving The Royal Tombs' Ceremony first by the Annals of the Joseon Dynasty and 'Cheon Bong Do Gam Ui Gui' (<[宣祖穆陵] 천봉도감의궤>). As a result, its Ceremony was proceed with own obvious procedures and characteristics. Especially, its scale and aspect were as good as those of the First Funeral(初葬). Finally, considering its procedure and big scale, it could be drawn from the crucial fact that would not be only proceeded the Feng Shui's controversies. The first real case of 'Moving The Royal Tombs', Jeong Mausoleum Cheon Leung(貞陵 遷陵) was the fact that it and political conditions had intimate relations resulting from the ill-fated relationship between King Taejong and Queen Sindeok. In particular, during the period of Yejong(Young Mausoleum, 英陵)․JungJong(So Mausoleum․Hui Mausoleum, 昭陵․禧陵)․Myeongjong (Jong Mausoleum, 靖陵), it would be worth better noticing. During King Yejong's early days in office, the prime minister of the day, Han Myeong-hoe submit a proposal to move the Yeong Mausoleum to solve the political unrest, so that it had the character of a political solution. And the period of King JungJong, 'Moving The Royal Tombs' of So Mausoleum(昭陵) and Hui Mausoleum was the opportunity of a political reorganization. Specially, in the process of Hui Mausoleum, the political event extracting Kim AnLo by King Jungjong showed the aspect of royal authority. King Myeongjong also proclaimed his powerful authority through its ceremony by carrying out moving Jong Mausoleum to restore the weakened royal power. In conclusion, 'Moving The Royal Tombs' in early Joseon dynasty was the ritual for political change and political reorganization by the powerful political groups. Additionally, it became important events showing regal power and reinforcing royal authority because of a politically sensitive issue with royal family. consequently, its aspect of reinforcing royal authority should be considered even in matters of the 'Moving The Royal Tombs' Ceremony in the lately Joseon Dynasty.

‘놀이’라는 일종의 전통

신재훈 공연과이론을위한모임 2024 공연과 이론 Vol.- No.95

물분사 폐열회수 보일러의 효용성에 대한 실험적 검증

신재훈,박태준,조현석,유준상,문석수,이창언 한국분무공학회 2023 한국분무공학회지 Vol.28 No.1

The waste-heat-recovery boiler with water spray (HR-B/WS) applies the heat exchange between the inlet air and exhaust gas with the water spray into the inlet air. The evaporation of water in the inlet air promotes heat recovery from the exhaust gas so that thermal efficiency can be improved by the enhanced condensing effect. The NOx emission can also be reduced by lowering the flame temperature due to the dilution effect of the water. In this study, the validity of this concept is examined by the practical boiler test performed with a 24 kW condensing boiler under the full load condition according to the water injection amount. The theoretical amount of water injection is calculated under the assumption of full evaporation of the sprayed water, which is calculated as 50 g/min. Since the injected water cannot evaporate fully in the actual system, the maximum water spray amount is set as 100 g/min. The results showed that the water injection can increase the thermal efficiency up to 95.59% and reduce NOx and CO emissions simultaneously to 8.9 ppm and 35 ppm at 0% of O2. Although the heat energy loss increased due to the unevaporated water, the increase in water injection amount caused higher thermal efficiency due to the increased amount of the evaporated water.

임상영양지표 ( Nutritional Index )로서의 1형 인슐린양 성장인자 ( IGF-I )의 역할

신재훈 대한내분비학회 1994 Endocrinology and metabolism Vol.9 No.2