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양재경,이종윤,황병호,조헌정 한국목재공학회 1994 목재공학 Vol.22 No.2
This study was performed to study utilization of separated carbohydrates as well as separation, following analysis of the major components and separation of the carbohydrates in waste liquors of SP, KP, ASAM and AS. The result can be summerized as follows; Inorganic contents in waste liquors increase in this order AS$lt;KP$lt;ASAM $lt;SP. And lignin contents increased in this order : AS$lt;ASAM$lt;KP$lt;SP. Carbohydrate content in the waste liquor shows that AS waste liquor was the highest and SP waste liquor the lowest and those are assumed that the most carbohydrates are modified. Carbohydrate analysis shows that glucose content on the Quercus mongolica was much higher than other wood species. Separation of carbohydrates and lignins is very effective in AS waste liquor. SP waste liguor can be used as a medium additive for mushroom cultivation considering its powerful effect. In the AS waste liquor, waste cooking agent was suitable to recover by the distillation. And wood components was separated by simple treatment. It is possible to produce alditol because of plentiful carbohydrate amount on the waste liquor.
高濃度有機排水の高溫 · 好氣處理における 力口り一/水 (C/W) 比の重要性
梁在璟,淸水由紀子,趙敬淑,森忠洋 이화여자대학교 생명과학연구소 1995 생명과학연구논문집 Vol.6 No.-
The significance of Calorie/Water (C/W) ratio was investigated in the treatment of highly concentrated orgnic wastes by the Thermophilic Oxic Process (TOP). Shochu progressing wastewater was used in this study. When C/W ratio was 2.18, most of carbon in influent was converted to CO_2 and all water was evaporated. Organic matter was not completely converted to carbon dioxide (CO_2) when the C/W ratio was less than 1.85. It is because that the biologicak activity was low due to the increase of moisture. The mixture in the reator was dried when C/W ratio was 4.13 beacuse excess energy was provied. Considering these results, it si concluded that the optimum C.W ratio is 2.18. The thermophilic oxic process is included in the high energy combustion, in other word this process was defined as "Biocombustion".
미용실 폐기모발을 담체로 활용한 오수처리특성 : 유기물과 영양 염 제거 중심으로
양재경 한국메이크업디자인학회 2005 한국메이크업디자인학회지 Vol.1 No.2
The purpose of this study was to investigate the removal ratio of organics, total nitrogen and total phosphate from the synthetic wastewater by the biological reactor using hair wasted from the beauty salon as microbiological media. The dynamic kinetics data was evaluated in order to know the possibility of use for the biological media of wasted hair by the batch type reactor. The results were as follow; 1. The removal ratios of CODcr, T-N and T-P were 98.0%, 71.4% and 85.7% in the lab scale continuous biological treatment plant using hair wasted from the beauty salon as the microbial media. 2. The removal ratios of CODcr, T-N and T-P were 93.3%, 77.2% and 86.3% in the lab scale batch treatment plant, respectively. 3. The removal rate per unit of microorganism per unit of hours were evaluated as 7.34mgCOD/g-MLSS?hr of CODcr, 1.15mg-N/g-MLSS?hr of TN and 0.13mg-P/g-MLSS?hr of TP, respectively. And removal rate coefficients(k) were evaluated as 0.91hr-1of CODcr, 0.48hr-1 of TN and 0.19hr-1 of TP. Therefore, the result could be concluded that the hair wasted from the beauty salon is widely useable as the biological media for the treatment of wastewater.
리그노셀룰로스의 효소가수분해를 위한 전처리법에 관한 연구
양재경,장준복 中部大學校 農業生命資源科學硏究所 1998 農業生命資源科學硏究論文集 Vol.6 No.-
본 연구는 리그노셀룰로스의 효과적인 효소가 수분해를 위해 폭쇄법으로 전처리한 다음, 냉수, 수산화나트륨, 아염소산나트륨을 사용하여 랄리그닌처리를 실시한 후, 시판 Cellulase를 이용하여 효소가수분해를 시도하였다 그 결과는 다음과 같이 요약할 수 있다. 1. 냉수처리는 폭쇄재의 효소당화율 개선에 효과가 없었다. 2. 폭쇄재의 수산화나트륨 용해처리에 있어서, 탈리그닌 처리효과는 비등처리가 우수하였으나, 효소당화율은 실온처리가 유리하였다. 3. 폭쇄재의 아염소산나트륨 용액처리는 효소당화 측면 뿐만 아니라, 탈리그닌처리 효율면에서 가장 우수하였다. 4. 이태리포플러와 신갈나무의 탈리그닌처리 및 효소가수분해를 위한 최적 폭쇄조건은 25㎏/㎠, 6분처리로 판단되었다. Lignocellulose was composed of three main components; cellulose, hemicellulose and lignin. Woody cellulose was embedded in a matrix of lignin-hemicellulose complexes. Woody cellulose was a crystalline polymer generally associated in a matrix with hemicellulose and lignin, which is highly resistant to enzyme attack. In this study two effective pretreatment of lignocellulose, steam explosion combined with chemical pretreatment, were intensively investigated using chemical agents. Chips of oak wood and poplar wood were treated with steam explosion(25kgf/㎠, 3-9 min.) then chemically treated with distilled water, sodium hydroxide(NaOH), sodiun chlorite(NaCIO₂). The purpose of this study was development of pretreatment-hydrolysis process of lignocellulose. The results of this work were as follows: Cold water treatment of exploded wood was not affect hydrolysis rate. In the sodium htdroxide treatment of exploded wood, boiling treatment was decreased lignin content in the exploded wood, but that was decreased hydrolysis rate of exploded wood. Sodium chlorite treatment of exploded wood was the most effective delinification and enzymatic hydrolysis. Exploded condition of poplar and oak wood for delignification and enzymatic hydrolysis was suggested 25 ㎏/㎠(pressure), 6 minutes(time).
역 물류 환경 인터넷 경매를 위한 요소 선택 응용 추천 시스템
양재경,유우연 한국산업경영시스템학회 2006 한국산업경영시스템학회 학술대회 Vol.2006 No.춘계
다양한 데이터 마이닝 기법들의 발전과 더불어, 속성 (Feature 또는 Attribute) 의 범위 (Dimension) 를 줄이기 위해 많은 요소 선택 방법이 개발되었다. 이는 확장성 (Scalability) 을 향상시킬 수 있고 학습 모델 (Learning Model)을 더욱 쉽게 해석할 수 있도록 한다. 이 논문에서는 네스티드 분할 (Nested Partition, 이하 NP) 을 이용한 새로운 최적화 기반 속성 선택 방법을 NP 기본 구조와 다양한 실험 문제의 수치적 결과들과 함께 제시하여 어떻게 NP의 최적화 구조가 속성 선택 과정에 기여를 하고 있는지 보여준다. 그리고 이 새로운 지능적인 분할 방법이 어떻게 매우 효율적인 분할을 수행하는지를 제시한다. 이 새로운 속성 선택 방법은 필터 (Filter) 방법과 래퍼 (Wrapper) 방법 두 가지로 구현될 수 있다. 사례 연구로서, B2B e-비즈니스 시스템에서 효과적으로 사용될 수 있는 추천 시스템(Recommender System) 을 제안하였다. 이 추천 시스템은 분류 기법 (Classification Rule) 과 제시된 NP 기반 요소 선택 방법을 사용하고 있다. 이 추천 시스템은 사용자의 인터넷 경매 참여를 추천하는데 사용되며, 이 때 제안된 요소 선택 앨고리듬은 추천 규칙들이 쉽게 이해될 수 있도록 모델을 간략화 하는데 사용된다.
양재경,이종윤,장준복 한국목재공학회 1992 목재공학 Vol.20 No.3
Steam explosion is one of the most effective pretreatment for fractionating wood. This leads to the total utilization of wood basic components ; cellulose, hemicellulose and lignin. The amount of sugar and lignin extracted with the hot water method was very low. The lignin content of residues after extraction with using a sodium hydroxide treatment, increased delignification of carbohydrate as the concentration of alkali was increased. Oak, pretreated with steam exploded at 25㎏/㎠ for 6 min. then 1% alkali for 2hrs, showed a delignification rate up to 95%. A sodium chlorite treatment of steam exploded pine and oak also afforded a high deligrunfication effect. Pine, treated 10% sodium chlorite for 2hrs. showed high delignification. However, by using a sodium hydroxide treatment, a 2% retreatment for 1hr. after a 2% for 2hrs. afforded remarkable delignification effect on exploded wood at 30㎏/㎠ for 9min. and at 35㎏/㎠ for 3-6min. In oak, an initial 2hrs, treatment of 2% sodium chlorite was followed by a second 2hrs. treatment at 10%. This showed a delignification rate of 96%.