http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 안원영(Won Yung Ahn) (검색결과 29 건)
- 무료
- 기관 내 무료
- 유료
-
-
고로쇠나무 ( Acer mono Max . ) 수액 표준농축액의 색도지수와 착색물질
안원영 ( Won Yung Ahn ) 한국산림과학회 1975 한국산림과학회지 Vol.26 No.1
The sap uses of Korean sugar maple, Acer mono Max., $quot;Gorosoe-namoo.$quot; the most abundant growing stock in maples, for a medical beverage at every early spring have had the long history in Korea. The sap of Korean sugar maple (the maple) was prepared with a unique tapping method from the trees during the sap flow season of 1974, measured the sugar content in 2.6° to 3.3° Brix of sugar on average and the sugar concentration of the sap was enough for a sweetener resource comparing with those of American sugar maples in literature. The color of sirup was very dark and the color index was 2.69 for the sirup of 15.3° Brix having 10 hours evaporation and 3.380 for the standard sirup, as shown in Table 3 and Figure 2, due to the prolonged evaporation in deep aluminium or stainless steel kettles. The alcohol extractives of standard sirup has the light color and the residue reddish brown and the absorption spectra have the maxima in wave length of 350 nm, 1,000 nm, 1,170 nm, 1,400 nm and 1900 nm, as shown in Figure 3. The extractives of ethanol and monoethanolamine mixture (97:3, v/v) has dark red and the residue darker redish brown.
-
-
-
리기다소나무재(材) 추출물(抽出物)과 균(菌)과의 관계(關係)(II) -1차(次) 침입균(侵入菌)의 건전(健全) 변재(邊材) 침입경로(侵入經路)-
심규섭,안원영,Shim, Gyu Seop,Ahn, Won-Yung 한국산림과학회 1996 한국산림과학회지 Vol.85 No.3
리기다소나무재의 변색 부위로부터 분리한 변색균을 다시 건전 목재에 접종하여 이 균의 목재 침입경로를 구명한 바, 처음 균사가 목재내 방사유세포에 침입하여 방사유세포 안에서 수평 방향의 이동을 계속하다가, 시간이 경과하면 가도관내로 이동하여 이 가도관을 통로로 하여 수직 방향으로 확산을 계속하였다. 침입 90일이 지나면 목재내 각 조직으로의 침입이 완료되어 균사가 세포내강에 만연한 것을 알 수 있었다. 또한 메탄올 추출물은 변색균의 목재 침입 경로에 영향을 미치지 않는 것으로 분석되었다. The cultured stain fungus isolated firstly from discolored wood of Pinus rigida was inoculated on wood blocks to investigate the invading pathway of the fungus. The inoculated fungus rapidly colonized in the ray parenchyma and moved radially along them. In process of time the fungus penetrated tracheids where it started to move into vertical direction. After 90 days the fungus colonized all over the wood tissue, therefore some cell lumens were filled with full of hyphae. In addition methanol extracts did not affect the invading pathway of the stain fungus.
-
리기다소나무재(材) 추출물(抽出物)과 균(菌)과의 관계(關係)(II) - 1차(次) 침입균(侵入菌)의 건전(健全) 변재(?材) 침입경로(侵入經路) -
심규섭,안원영,Shim, Gyu Seop,Ahn, Won-Yung 한국산림과학회 1996 한국산림과학회지 Vol.85 No.2
The cultured stain fungus isolated firstly from discolored wood of Pinus rigida was inoculated on wood blocks to investigate the invading pathway of the fungus. The inoculated fungus rapidly colonized in the ray parenchyma and moved radially along them. In process of time the fungus penetrated tracheids where it started to move into vertical direction. After 90 days the fungus colonized all over the wood tissue, therefore some cell lumens were filled with full of hyphae. In addition methanol extracts did not affect the invading pathway of the stain fungus. 리기다소나무재의 변색 부위로부터 분리한 변색균을 다시 건전 목재에 접종하여 이 균의 목재 침입 경로를 구명한 바, 처음 균사가 목재내 방사유세포에 침입하여 방사유세포 안에서 수평 방향의 이동을 계속하다가, 시간이 경과하면 가도관내로 이동하여 이 가도관을 통로로 하여 수직 방향으로 확산을 계속하였다. 침입 90일이 지나면 목재내 각 조직으로의 침입이 완료되어 균사가 세포내강에 만연한 것을 알 수 있었다. 또한 메탄올 추출물은 변색균의 목재 침입 경로에 영향을 미치지 않는 것으로 분석되었다.
-
-
오정도,안원영 ( Jung Do Oh,Won Yung Ahn ) 한국산림과학회 1988 한국산림과학회지 Vol.77 No.3
The experiment was carried out to investigate the properties of bark extractives form Larix leptolepsis and to evacuate their suitability as a bonding agent. The yield and reactivity were measured to examine the influence of temperature and time and the effect of carbonation and sulfonation. To define the possibility of practical application as wood adhesives the viscosity and gelation time were measured at 33% concentration. The results obtained were summarized as follows : 1. As the both yield and reactivity were high, extraction for 2 hours at 80℃ was the optimal temperature and time. 2 The highest effect achieved at 1% Na₂CO₃ about carbonation and 1% Na₂SO₃ : NaHSO₃ and 0.25% Na₂SO₃, about sulfonation. The sulfonation of 0.25% Na₂SO₃increased the yield and reactivity most highly. 3. By using hot water as extraction liquid the yield was 17.2%, while the addition of 1% and 5% NaOH to the extraction liquid increased the yield to 38.6% and 44.6%, respectively. 4. Hot water extracts showed the highest reactivity(68.8%) . The addition of 1% and 5% NaOH led to decrease in reactivity(49.3% and 25.8%, respectively). 5. At 33% concentration of the extracts the viscosity appeared very variable, Significantly high values of viscosity was measured in 1% NaOH solution, while very low values appeared for 5% NaOH solution. 6. The shortest gelation time was determined at pH 7 to 10 and the highest at pH 4. The use of paraformaldehyde resulted in gelation times longer than those of 37% formaldehyde solution. 7. Except the sulfonation extracts of hot water and 1% NaOH, the other extracts were found unsuitable due to high viscosity(1% NaOH extracts, sulfonation extracts; or to curing inability(5% NaOH extracts, sulfonation extracts of 5% NaOH). 8. From the three extract solutions which appeared to be suitable for use as bonding agents the hot water extracts and the sulfonation extracts of hot water were superior in extract reactivity, while the sulfonation extracts of 1% NaOH exceeded the other two extracts in extract yield.
-
리기다소나무재 추출물과 균과의 관계 (Ⅱ) - 1차 침입균의 건전 변재 침입경로 -
심규섭(Gyu Seop Shim),안원영(Won Yung Ahn) 한국산림과학회 1996 한국산림과학회지 Vol.85 No.2
The cultured stain fungus isolated firstly from discolored wood of Pinus rigida was inoculated on wood blocks to investigate the invading pathway of the fungus. The inoculated fungus rapidly colonized in the ray parenchyma and moved radially along them. In process of time the fungus penetrated tracheids where it started to move into vertical direction. After 90 days the fungus colonized all over the wood tissue, therefore some cell lumens were filled with full of hyphae. In addition methanol extracts did not affect the invading pathway of the stain fungus.
-
조용민 ( Yong Min Cho ),안원영 ( Won Yung Ahn ) 한국공업화학회 2002 공업화학 Vol.13 No.8
종이의 광투과 시 투과된 광의 명암도는 지역 광학밀도와 평량에 따라 다르다. 이러한 특성을 활용하여 화상 히스토그램에 의한 진폭의 중간값인 그레이 값(gray level)을 측정하여 화상분석법으로 종이의 물성을 간접 평가가 가능할 것으로 판단된다. 따라서 본 본문에서는 화상 입력장치인 광투과 주사기를 이용하여 관계습도 65±2%, 온도 20±2 ℃에서 조습한 종이 시험편을 주사하여 화상처리로 얻은 그레이 값과 종이의 평량, 탈수 전 체류시간, 고해도, 밀도 및 압체압력과의 관계를 구명하였다. 광투과 주사 시험용 수초지는 침엽수 미표백 크라프트펄프(SwUKP)와 침엽수 표백 크라프트펄프 (SwBKP)를 20, 25, 30, 35와 40 ˚SR로 고해하고, 초지 시 탈수 전 체류시간(retention time)을 0, 30, 60과 90 sec로, 그리고 평량을 30, 45, 60, 75, 90, 105와 120 g/㎡로 각각 제조하였다. SwUKP와 SwBKP의 고해도 및 체류시간과 평량에 관계없이 수초지의 그레이 값은 SwBKP 수초지가 SwUKP 수초지보다 더 높았다. 그리고 수초지의 평량이 증가할수록 그레이 값은 직선 혹은 지수적으로 감소하였다. 또한 동일평량 수초지의 경우, 고해도가 증가 할수록 그레이 값이 감소하고 체류시간이 늘어남에 따라 그레이 값이 증가하는 경향을 나타냈다. 이는 수초지에 광투과 주사된 광의 명암도 차이가 작기 때문으로 판단되어진다. On the basis of the gray level derived from mean amplitude in distribution of level amplitude being dominated by optically transmitted local light intensity and the basis weight of the paper by light transmission scanner, the image analysis on gray level for handsheets conditioned in humidity chamer with RH 652% at 20±2 ℃ was examined. This effort was to elucidate the relationship between the gray level and the properties of basis weight, degree of beating, retention time, density and press pressure of handsheets. Handsheets of SwUKP and SwBKP for scanning light transmission were prepared at beating degree of 20, 25, 30, 35 and 40; SR, retention time of 0, 30, 60 and 90 seconds; and basis weight of 30, 45, 60, 75, 90, 105 and 120 g/㎡. Light transmission image was closely related to gray level and basis weight. Gray level of SwUKP and SwBKP handsheets decreased in a linearly or an exponentially with increasing basis weight, and the level of SwUKP handsheets was higher than that of SwBKP. On the same basis weight of both SwUKP and SwBKP handsheets, high beating degree resulted low gray level of handsheets. However, the level increased with increasing retention time due to the no clear difference in transmitted intensity on the handsheets.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
