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송인규,Song, In-Gyu 에너지절약전문기업협회 2008 esco Vol.55 No.-
에너지원의 대부분을 수입하고 있는 우리나라는 현재 에너지원의 수입비용 상승에 따라 기업의 에너지비용 또한 급상승하고 있는 상황이다. 이러한 에너지 비용의 급상승은 기업의 생산원가상승의 주요 원인이 되며 이는 지금 기업 경쟁력의 약화를 초래하고 있다. 이러한 상황에서 에너지 절감을 통한 생산원가의 절감은 곧 기업의 성패와도 직결되어 있다고 해도 과언이 아니다. 그렇다면 기업 입장에서 에너지 절감을 위해 할 수 있는 최선의 방법은 무엇인가? 바로 ESCO를 활용하여 기술적, 경제적 부담없이 에너지절약시설을 설치하는 것이다.
남상영 ( Sang Young Nam ),김인재 ( In Jae Kim ),최성열 ( Seong Yel Choi ),김민자 ( Min Ja Kim ),김영호 ( Young Ho Kim ),송인규 ( In Gyu Song ),이광재 ( Guang Jae Lee ),박재호 ( Jae Ho Park ),김태중 ( Tae Jung Kim ) 한국국제농업개발학회 2011 韓國國際農業開發學會誌 Vol.23 No.5
This study was conducted to investigate the effects of cultural soil textures on growth and quality of Glycyrrhiza uralensis Fischer from 2009 to 2010. The obtained results from this study were summarized as follows; The growth of stem and leaf were superior to one year old G. uralensis, and surface runner and root growth tended to be better in 2 years old G. uralensis. The weight of stem and leaf were heavy in sandy loam, and plant height, branches, stem diameter in sandy clay loam were better than other soil texture. The growth characteristics, such as length, number and weight of surface runner, was better in order of sandy clay loam > sandy loam > loamy sand. The length of main and lateral root was longer in loamy sand soil than other treatments, and the diameter of main and lateral root was more thicker in sandy loam than others. The number of lateral root was higher in the sandy loam than other treatments. The yield of main and lateral root was in order of sandy loam > sandy clay loam > loamy sand soil. Marketable root yield of one year old and two year old G. uralensis were increased 57% and 71% in sandy loam compare to a loamy sand as 204 kg/10 a, respectively. The content of glycyrrhizinic acid was the hightest as 1.62% in sandy clay loam soil in one year old, and as 1.58% in sandy loam soil in two years old of G. uralensis, respectively.
이경자(Gyeong-Ja Lee),김영상(Young-Sang Kim),송인규(In-Gyu Song) 한국토양비료학회 2010 한국토양비료학회지 Vol.43 No.6
노지 고추재배시 경운 깊이에 따른 유기물 함량을 구명하여 지속적 안전생산에 활용하고자 경운 깊이는 10, 30 및 50 cm로 하고 퇴비의 양을 1, 3 및 5 톤 10a<SUP>-1</SUP>으로 처리하여 고추를 재배한 결과 다음과 같다. (1) 시험후 토양의 pH는 모든 처리에서 시험전 토양보다 낮아졌으며 EC를 비롯한 Av. P2O5, K, Ca, Mg,Na는 시험전보다 높았다. 퇴비 시용량 별로는 퇴비 1 톤 10a<SUP>-1</SUP> 및 3 톤 10a<SUP>-1</SUP> 처리에 비해 퇴비 5 톤 10a<SUP>-1</SUP>에서 높았다. (2) 고추 생육은 퇴비 1 톤 10a<SUP>-1</SUP>처리에 비하여 퇴비 3톤 및 5 톤 10a<SUP>-1</SUP>에서 좋았으며, 경운깊이 10 cm 및 30 cm에 비해 경운깊이 50 cm에서 좋았다. (3) 고추 수량은 경운깊이 10 cm에서는 퇴비 3 톤 10a<SUP>-1</SUP>처리에서 5,880 kg ha<SUP>-1</SUP>으로 가장 좋았고, 경운 깊이 30 cm 에서는 퇴비 5 톤 10a<SUP>-1</SUP> 처리에서 5,610 kg ha<SUP>-1</SUP>으로 가장 좋았다. (4) 고추식물체의 T-N 함량 및 흡수량은 퇴비 3 톤 10a<SUP>-1</SUP> 및 5 톤 10a<SUP>-1 </SUP>처리에서 1 톤 10a<SUP>-1</SUP>처리에 비해 높았다. Experiments were conducted to find out the optimum amount of compost and tillage depths in pepper cultivation. Red pepper was grown in different plots with 10 cm, 30 cm, and 50 cm in tillage depth, and was applied with 1 ton, 3 ton, and 5 ton 10a<SUP>-1</SUP>, respectively. The pH value in soil showed lower level after experiment than before experiment, however, the contents of the EC, Av. P2O5, K, Ca, Mg, and Na were increased after experiment. The chemical contents in soil after experiment showed higher level in compost 5 ton 10a<SUP>-1</SUP>. The growth of red pepper in field was enhanced in the compost treatment of 3 ton, 5 ton 10a<SUP>-1</SUP>, and tillage 50 cm plot. In tillage 10 cm plot, yields of red pepper showed the highest amount as 5,880 kg ha<SUP>-1</SUP> with compost 3 ton 10a<SUP>-1</SUP>. In tillage 30 cm plot, the yields of red pepper showed the highest as 5,610 kg ha<SUP>-1</SUP> with compost 5 ton 10a<SUP>-1</SUP>. The T-N contents and uptake in the red pepper plant increased in the compost in 3 ton 10a<SUP>-1</SUP> and 5 ton 10a<SUP>-1</SUP> compared to 1 ton 10a<SUP>-1</SUP>. These results suggest that different amounts of compost should be applied when we cultivate crops with different tillage depth.
과립화 공정과 Y2O3 첨가제에 의한 알루미나 세라믹스의 기계적 특성 향상
송인규 ( In Gyu Song ),김정식 ( Jung Sik Kim ) 대한금속재료학회(구 대한금속학회) 2015 대한금속·재료학회지 Vol.53 No.4
This study investigated the effect of powder granulation on the mechanical properties of sintered alumina ceramics. 2 wt% MgO was added to enhance the sintering process, and the effect of Y2O3 addition was investigated at various sintering temperatures (1450 ℃, 1550 ℃ and 1650 ℃) with a granulation process. The sintered density, flexural strength and Vicker``s hardness were analyzed according to the amount of Y2O3 addition and the sintering temperature. The sintered density and mechanical properties of the sintered specimens with powder granulation was higher than the as-received commercial Al2O3 powders because granule powders uniformly filled the mold. The mechanical properties of strength and hardness for the sintered Al2O3 specimens increased with addition of Y2O3 up to 1 wt%, and then decreased beyond that. The 1 wt% Y2O3-added Al2O3 samples (sintered at 1650 ℃) had the maximum flexural strength of 363.53 MPa and a Vicker``s hardness of 20.1 GPa. (Received April 9, 2014)
앵커용 알루미나 세라믹의 기계적 강도에 대한 MgO 첨가제와 소결온도 영향
송인규 ( In Gyu Song ),김태상 ( Tae Sang Kim ),강계명 ( Kae Myung Kang ),김정식 ( Jung Sik Kim ) 대한금속재료학회(구 대한금속학회) 2014 대한금속·재료학회지 Vol.52 No.3
The sintering process in alumina (Al2O3) specimens for a functional ceramic anchor was investigated and the physical and mechanical properties of the sintered samples were analyzed. MgO (from 0.25 wt% to 3.0 wt%) as an additive was added and sintered at various temperatures (1450 ℃, 1550 ℃, and 1650 ℃) using a conventional solid state sintering process. The sintered density, flexural strength and compressive strength were investigated for the mechanical strength evaluation. The 2.0 wt% MgO added Al2O3 samples (sintered at 1650 ℃) showed a maximum flexural strength of 354.82 MPa and compressive strength of 1615.2 MPa. These experimental results suggested that the sintering temperature and the amount of additives played an important role in enhancing the density and mechanical strength because of the micro-structure modification by MgO addition in the Al2O3 sintered samples. We expect to be able to produce ceramic anchors using the experimental conditions with the best mechanical and physical properties.